Tackle for tarpaulin and use method

Abstract

The invention provides a tackle for tarpaulin and a using method. The tackle comprises a support, guide wheel sets are symmetrically arranged on the support, first change gears are arranged on the guide wheel sets, second change gears are arranged on one sides of the first change gears, and third change gears are arranged on the other sides of the first change gears; the first change gear and the second change gear are located in the same plane, and the second change gear and the third change gear are perpendicular to each other. An extension frame is arranged at the top of the support, and reinforcing ribs are arranged on the two sides of the extension frame and connected with the top of the support; the extension frame is a U-shaped plate. A second guide rail is arranged on the extension frame, a telescopic rod is arranged on one side of the second guide rail, and one end of the telescopic rod is connected with the top end of the support. The tackle for the tarpaulin and the use method have the advantages that the tackle is stable in structure, flexible in operation, convenient to install and high in adaptability, the use efficiency of the tarpaulin is improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] The invention relates to the field of pulleys, and in particular to a pulley for a tarpaulin and a use method thereof. Background Art

[0002] With the rapid development of the logistics industry, the demand for transportation tools and supporting facilities is increasing. Tarpaulins, as an important tool to protect goods from external factors such as wind, rain, and dust, have been widely used in transportation vehicles such as trucks, muck trucks, and dump trucks. Therefore, how to more effectively manage and operate tarpaulins and improve transportation efficiency has become the focus of the industry.

[0003] The use of a pulley when automatically unfolding, retracting and fixing tarpaulins of various sizes and materials can greatly reduce the workload. In the prior art, the technology of the relevant pulley is disclosed as follows: Patent CN218644012U discloses a pulley for a tarpaulin profile, wherein the pulley is placed in the profile, and a transmission system for driving the pulley to slide is arranged on the profile, and ribs for clamping the pulley are formed in the profile, including: a frame, the frame includes a main body and connecting parts for detachable connection with the tarpaulin and mounting parts clamped with the ribs, and a rolling assembly is arranged on the main body so that the frame can drive the tarpaulin to reciprocate along the extension direction of the profile.

[0004] Patent CN212685398U discloses a height-adjustable canopy system, which comprises two opposite rails, each of which is provided with a plurality of pulley devices, an inverted U-shaped canopy rod is installed between the two opposite pulley devices, and a tarpaulin is installed on the outer side of each canopy rod; the pulley device comprises a front support plate and a back support plate, the front of the lower edge of the back support plate is fixedly connected to the back of the front support plate, and a connecting plate is provided between the middle parts of the two support plates; an upper track wheel is installed at the middle upper part of the front of the front support plate, and a lower track wheel is installed at the middle lower part; two opposite clamping plates are provided at the middle upper part of the back of the back support plate, and mounting holes are provided on the clamping plates; multiple groups of connecting holes are arranged at equal intervals at both ends of the canopy rod, and the ends of the canopy rod are fixedly connected to the pulley devices by mounting bolts penetrating the mounting holes and the connecting holes.

[0005] Patent CN212709151U discloses a wire rope traction type canopy system. It includes tracks arranged on both sides of the carriage, multiple groups of sliding devices are installed on the tracks, a tarpaulin is installed on the top of each sliding device, and a traction device; each group of sliding devices includes two opposite pulley assemblies, a support plate is installed between the tops of the two pulley assemblies, a canopy rod is installed between the support plates, and a V-shaped bracket is installed between two adjacent canopy rods; the pulley assembly includes a back plate, an upper track wheel is installed in the middle and upper part of the back plate, a lower track wheel is installed in the middle and lower part, a support plate is installed on the outer side of the back plate, and the support plate is installed on the top of the support plate; the traction device includes a corner sheave assembly installed on both sides of the front of the carriage, a traction assembly installed in the middle of the front, and a driving motor; a left rear sheave and a right rear sheave are installed on both sides of the rear of the carriage, and it also includes a wire rope.

[0006] Patent CN216231933U discloses a simple installation mechanism for a dump truck canopy rod, including a canopy rod pulley and a guide rail horizontally installed on the two side panels of the dump truck cargo compartment. The cross-section of the guide rail is "H"-shaped. The side of the guide rail close to the side panel is installed on the side panel, and the side of the guide rail away from the side panel is the sliding ridge of the guide rail. The guide rail is composed of a fixed track and a detachable track connected on the same straight line. The detachable track and the side panel are detachably installed. The canopy rod pulley includes two rollers and a vertical bracket. The two rollers are axially fixed on the same side of the vertical bracket and are arranged one above and one below. An annular groove is circumferentially provided on the side surface of the roller. The two rollers are respectively clamped on the upper and lower sides of the sliding ridge through the annular groove and can move along the extension direction of the sliding ridge. A plurality of canopy rod pulleys are correspondingly equipped on the sliding ridges on the left and right sides.

[0007] The pulley included in the technical solution disclosed in the above patent has a complex structure and poor adaptability, which leads to problems such as insufficient structural stability. Therefore, a new type of pulley is needed to solve the above problems. Summary of the invention

[0008] The object of the present invention is to provide a pulley for a tarpaulin and a method of using the same, which has the advantages of structural stability, operational flexibility, installation convenience, strong adaptability, and improved tarpaulin use efficiency and reduced maintenance costs.

[0009] To achieve the above-mentioned purpose, the present invention provides a pulley for a tarpaulin, including a bracket, a guide wheel group symmetrically arranged on the bracket, a first hanging wheel on the guide wheel group, a second hanging wheel on one side of the first hanging wheel, and a third hanging wheel on the other side of the first hanging wheel, the first hanging wheel and the second hanging wheel are located in the same plane, and the second hanging wheel and the third hanging wheel are perpendicular to each other.

[0010] Preferably, the second idler wheel and the third idler wheel are both located at one end of the first idler wheel.

[0011] Preferably, a first guide rail is provided below the bracket, and the first hanging wheel is located on one side of the first guide rail.

[0012] Preferably, the second hanging wheel is connected to the bracket, and a gap is provided between the second hanging wheel and the bracket; A third connecting piece is arranged on the top of the bracket, and cut corners are arranged at both ends of the third connecting piece respectively. A gap is arranged between the third connecting piece and the second hanging wheel.

[0013] Preferably, a first connecting piece is provided on the bracket at one end of the first hanging wheel, and a third hanging wheel is provided on the first connecting piece.

[0014] Preferably, an extension frame is provided on the top of the bracket, and reinforcing ribs are provided on both sides of the extension frame to be connected to the top of the bracket; the extension frame is a U-shaped plate.

[0015] Preferably, a second guide rail is provided on the extension frame, a telescopic rod is provided on one side of the second guide rail, and one end of the telescopic rod is connected to the top end of the bracket.

[0016] Preferably, a second connecting plate is provided below the first guide rail, a first connecting hole is provided on the second connecting plate, a second connecting hole is provided on the bracket above the first connecting hole, and at least one of the first connecting hole and the second connecting hole is provided.

[0017] Preferably, a pulling device is provided on one side of the bracket.

[0018] A method for using a pulley for a tarpaulin comprises the following steps: Raise the second guide rail to a suitable height using the telescopic rod and maintain it; Use a connecting rope to fix the tarpaulin to the first connecting hole and the second connecting hole on the pulley; Install the pulleys into the slide rail in order, use the pulling device to pull the first pulley to the other end of the slide rail, and the other pulleys will gradually move to spread the tarpaulin on the truck; when the pulley moves in the slide rail, the second hanging wheel contacts the top of the slide rail to lift the slide rail, the third hanging wheel contacts the side of the slide rail to prevent the pulley from falling out of the slide rail, and the first hanging wheel contacts the bottom of the slide rail and slides along the bottom of the slide rail.

[0019] Therefore, the present invention adopts the above-mentioned pulley for tarpaulin and the use method, and the technical effects are as follows: The design of the pulley significantly enhances the stability of the structure by setting a symmetrical guide wheel group and multiple hanging wheels on the bracket, using a U-shaped plate as an extension frame and adding reinforcing ribs. This design enables the pulley to withstand greater tension and pressure during use, ensuring the stable sliding and positioning of the tarpaulin.

[0020] The first, second and third wheels on the pulley are located at different positions, and the second and third wheels are perpendicular to each other. This design allows the tarpaulin to change direction smoothly during the sliding process. At the same time, the addition of the telescopic rod and the second guide rail further enhances the flexibility of the pulley, and the position and tension of the tarpaulin can be adjusted as needed.

[0021] The first guide rail provided below the bracket and the connection hole on the connection plate provide convenience for the installation of the pulley. The user can firmly install the pulley in the carriage or other required positions according to actual needs without complicated installation steps and tools.

[0022] The design of the trolley takes into account the needs of tarpaulins of different widths and lengths. By adjusting the length of the telescopic rod and the position of the guide wheel group, it can adapt to tarpaulins of different sizes and shapes. In addition, the design of the hanging wheels and guide rails also allows the tarpaulin to remain flat during the sliding process, avoiding wrinkles or twisting.

[0023] By using this pulley device, the unfolding and folding of the tarpaulin becomes faster and more convenient. The user only needs to slide the tarpaulin through simple operations, which greatly improves the efficiency and convenience of using the tarpaulin.

[0024] The pulley is compact and durable, reducing the frequency of component replacement due to damage or failure. At the same time, its easy installation and maintenance also reduce the user's cost and time cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front view of a pulley for a tarpaulin in Embodiment 1 of the present invention; Figure 2 This is an axonometric view of a pulley for a tarpaulin in Embodiment 1 of the present invention; Figure 3 This is an axonometric view of a pulley for a tarpaulin in the second embodiment of the present invention; Figure 4 It is a side view of a pulley for a tarpaulin in the second embodiment of the present invention; Figure 5 A schematic diagram of the pulling device.

[0026] Reference numerals

[0027] 1. Bracket; 2. Guide wheel assembly; 21. First hanging wheel; 22. Second hanging wheel; 23. Third hanging wheel; 24. First connecting plate; 3. First guide rail; 4. Extension frame; 5. Reinforcing ribs; 6. Second guide rail; 7. Telescopic rod; 8. Second connecting plate; 9. First connecting hole; 10. Second connecting hole; 11. Pulling device; 12. Third connecting plate; 13. Slide rail. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages disclosed in the embodiments of the present invention clearer, the embodiments of the present invention are further described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the embodiments of the present invention and are not intended to limit the embodiments of the present invention. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions.

[0029] It should be noted that the terms "include", "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or server comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or devices.

[0030] Like reference numerals and letters denote similar items in the following drawings, and thus, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Embodiment 1

[0034] like Figure 1 , Figure 2As shown, the present invention provides a pulley for a tarpaulin, including a bracket 1, on which a guide wheel group 2 is symmetrically arranged. The guide wheel group 2 can be placed in a slide rail 13 so that the pulley moves along the slide rail 13 to achieve the storage and unfolding of the tarpaulin.

[0035] The guide wheel group 2 is provided with a first hanging wheel 21, a second hanging wheel 22 is provided on one side of the first hanging wheel 21, and a third hanging wheel 23 is provided on the other side of the first hanging wheel 21. The first hanging wheel 21 and the second hanging wheel 22 are located in the same plane, and the second hanging wheel 22 and the third hanging wheel 23 are perpendicular to each other. The sizes of the first hanging wheel 21, the second hanging wheel 22 and the third hanging wheel 23 can be adjusted as needed. The structural design of the first hanging wheel 21, the second hanging wheel 22 and the third hanging wheel 23 prevents the pulley from sliding out of the slide rail 13 from three directions.

[0036] The second hanging wheel 22 and the third hanging wheel 23 are both located at one end of the first hanging wheel 21 .

[0037] The first hanging wheel 21 contacts the bottom surface of the slide rail 13, the second hanging wheel 22 contacts the top surface of the slide rail 13, and the third hanging wheel 23 contacts the side surface of the slide rail 13. Under the joint action of the first hanging wheel 21, the second hanging wheel 22 and the third hanging wheel 23, the pulley moves.

[0038] A first guide rail 3 is provided below the bracket 1 , and the first hanging wheel 21 is located on one side of the first guide rail 3 , so that a gap is provided between the first hanging wheel 21 and the second connecting piece 8 , while also increasing the gap between the second hanging wheel 22 and the bracket 1 , thereby facilitating the installation of the slide rail 13 .

[0039] The second hanging wheel 22 is connected to the bracket 1 and is used to support the slide rail 13 .

[0040] The bracket 1 is provided with a first connecting piece 24 at one end of the first hanging wheel 21 , and the third hanging wheel 23 is provided on the first connecting piece 24 . The first connecting piece 24 is used to support the third hanging wheel 23 , and a gap is provided between the third hanging wheel 23 and the bracket 1 .

[0041] The top of the bracket 1 is provided with a third connecting piece 12, and a gap is provided between the third connecting piece 12 and the top of the second hanging wheel 22, and the third connecting piece 12 is used to fix the slide rail 13. The two ends of the third connecting piece 12 are respectively provided with cut corners to facilitate the installation of the slide rail 13.

[0042] An extension frame 4 is provided at the top of the bracket 1, and reinforcing ribs 5 are provided on both sides of the extension frame 4 to connect with the top of the bracket 1; the reinforcing ribs 5 are used to fix the extension frame 4. The extension frame 4 is a U-shaped plate, which can be set to a fixed length and is suitable for installing a tarpaulin on a fixed truck.

[0043] A second connecting piece 8 is provided below the first guide rail 3, a first connecting hole 9 is provided on the second connecting piece 8, and a second connecting hole 10 is provided above the first connecting hole 9 on the bracket 1. At least one first connecting hole 9 and one second connecting hole 10 are provided, and in this embodiment, two first connecting holes 9 and two second connecting holes 10 are provided, which are symmetrically located on the bracket 1.

[0044] Ropes connected to the tarpaulin can pass through the first connecting hole 9 and the second connecting hole 10 to fix the tarpaulin and the pulley.

[0045] The method for using the above-mentioned pulley specifically comprises the following steps: Use a connecting rope to fix the tarpaulin to the first connecting hole 9 and the second connecting hole 10 on the pulley; Install the pulley into the slide rail 13 in order, push the pulley to the other end of the slide rail 13 by hand, and spread the tarpaulin on the truck; when the pulley moves in the slide rail 13, the second hanging wheel 22 contacts the top end of the slide rail 13 to lift the slide rail 13, the third hanging wheel 23 contacts the side of the slide rail 13 to prevent the pulley from falling out of the slide rail 13, and the first hanging wheel 21 contacts the bottom end of the slide rail 13 and slides along the bottom end of the slide rail 13.

[0046] Embodiment 2

[0047] like Figure 3 As shown, on the basis of the first embodiment, the extension frame 4 is provided with a second guide rail 6, a telescopic rod 7 is provided on one side of the second guide rail 6, and one end of the telescopic rod 7 is connected to the top of the bracket 1. In this way, the length of the extension frame 4 can be extended, so that it can be applied to trucks of different specifications and tarpaulins of different specifications, thereby increasing the adaptability of the tackle.

[0048] like Figure 4 As shown, the usage is as follows: The second guide rail 6 is raised to a suitable height by the telescopic rod 7, and the second guide rail 6 maintains the existing height; Use a connecting rope to fix the tarpaulin to the first connecting hole 9 and the second connecting hole 10 on the pulley; Install the pulley into the slide rail 13 in order, push the pulley to the other end of the slide rail 13 by hand, and spread the tarpaulin on the truck; when the pulley moves in the slide rail 13, the second hanging wheel 22 contacts the top end of the slide rail 13 to lift the slide rail 13, the third hanging wheel 23 contacts the side of the slide rail 13 to prevent the pulley from falling out of the slide rail 13, and the first hanging wheel 21 contacts the bottom end of the slide rail 13 and slides along the bottom end of the slide rail 13.

[0049] Embodiment 3

[0050] On the basis of the first or second embodiment, a pulling device 11 can be further provided on one side of the bracket 1. Such a provision can not only increase the flexibility and convenience when installing the tarpaulin, but also improve the use efficiency of the tarpaulin. The pulling device 11 is a common device on the market. Figure 5 Only one of the structural devices is selected in the invention, and the invention cannot be limited to this structure.

[0051] The specific method of use includes the following steps: The second guide rail 6 is raised to a suitable height by the telescopic rod 7. The height of the second guide rail 6 can be changed according to actual needs, but the second guide rail 6 cannot be completely separated from the extension frame 4. The second guide rail 6 maintains the existing height; Use a connecting rope to fix the tarpaulin to the first connecting hole 9 and the second connecting hole 10 on the pulley; The pulleys are loaded into the slide rail 13 in order, and the pulling device 11 is used to pull the first pulley to the other end of the slide rail 13, and the other pulleys will gradually move, so that the tarpaulin is spread on the truck; when the pulley moves in the slide rail 13, the second hanging wheel 22 contacts the top end of the slide rail 13 to lift the slide rail 13, and the third hanging wheel 23 contacts the side of the slide rail 13 to prevent the pulley from falling out of the slide rail 13, and the first hanging wheel 21 contacts the bottom end of the slide rail 13 and slides along the bottom end of the slide rail 13.

[0052] Therefore, the present invention adopts the above-mentioned pulley for tarpaulins and the method of use. The design of the pulley takes into account the needs of tarpaulins of different widths and lengths. By adjusting the length of the telescopic rod and the position of the guide wheel group, it can adapt to tarpaulins of different sizes and shapes. In addition, the design of the hanging wheel and the guide rail also allows the tarpaulin to remain flat during the sliding process, avoiding wrinkles or twisting. By using this pulley device, the unfolding and folding of the tarpaulin becomes faster and more convenient. The user can slide the tarpaulin through simple operations, which greatly improves the efficiency and convenience of the use of the tarpaulin. The pulley design has a compact structure and strong durability, which reduces the frequency of parts replacement due to damage or failure. At the same time, its easy installation and maintenance characteristics also reduce the user's use cost and time cost.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A pulley for a tarpaulin, characterized in that: It includes a bracket, on which a guide wheel group is symmetrically arranged, on which a first hanging wheel is arranged, a second hanging wheel is arranged on one side of the first hanging wheel, and a third hanging wheel is arranged on the other side of the first hanging wheel, the first hanging wheel and the second hanging wheel are located in the same plane, and the second hanging wheel and the third hanging wheel are perpendicular to each other.

2. A trolley for tarpaulin according to claim 1, characterized in that: The second hanging wheel and the third hanging wheel are both located at one end of the first hanging wheel.

3. A pulley for a tarpaulin according to claim 2, characterized in that: A first guide rail is arranged below the bracket, and the first hanging wheel is located on one side of the first guide rail.

4. A pulley for a tarpaulin according to claim 3, characterized in that: The second hanging wheel is connected to the bracket, and a gap is provided between the second hanging wheel and the bracket; A third connecting piece is arranged on the top of the bracket, and cut corners are arranged at both ends of the third connecting piece respectively. A gap is arranged between the third connecting piece and the second hanging wheel.

5. A pulley for a tarpaulin according to claim 4, characterized in that: The bracket is provided with a first connecting piece at one end of the first hanging wheel, and the first connecting piece is provided with a third hanging wheel.

6. A pulley for a tarpaulin according to claim 5, characterized in that: An extension frame is arranged on the top of the bracket, and reinforcing ribs are arranged on both sides of the extension frame to be connected with the top of the bracket; the extension frame is a U-shaped plate.

7. A pulley for a tarpaulin according to claim 6, characterized in that: The extension frame is provided with a second guide rail, a telescopic rod is provided on one side of the second guide rail, and one end of the telescopic rod is connected to the top end of the bracket.

8. A pulley for a tarpaulin according to claim 7, characterized in that: A second connecting plate is disposed below the first guide rail, a first connecting hole is disposed on the second connecting plate, a second connecting hole is disposed on the bracket above the first connecting hole, and at least one of the first connecting hole and the second connecting hole is disposed.

9. A pulley for a tarpaulin according to claim 8, characterized in that: A pulling device is arranged on one side of the bracket.

10. A method for using a pulley for a tarpaulin, characterized in that: The following steps are involved: Raise the second guide rail to a suitable height using the telescopic rod and maintain it; Use a connecting rope to fix the tarpaulin to the first connecting hole and the second connecting hole on the pulley; Install the pulleys into the slide rail in order, use the pulling device to pull the first pulley to the other end of the slide rail, and the other pulleys will gradually move to spread the tarpaulin on the truck; when the pulley moves in the slide rail, the second hanging wheel contacts the top of the slide rail to lift the slide rail, the third hanging wheel contacts the side of the slide rail to prevent the pulley from falling out of the slide rail, and the first hanging wheel contacts the bottom of the slide rail and slides along the bottom of the slide rail.

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