Automatic leveling and stabilizing device for tarpaulin supporting frame
The automatic leveling and stabilizing device of the tarpaulin support frame, driven by lifting rails and drive components, solves the problem that traditional tarpaulins cannot automatically level themselves according to the height and quantity of goods. It achieves stable support and dustproof effect for the tarpaulin, improves transportation safety and extends the service life of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-03
- Publication Date
- 2026-04-07
AI Technical Summary
Traditional tarpaulins are difficult to automatically level according to the height and quantity of goods during truck transportation, resulting in localized looseness or tightness, potential damage, and an inability to form a stable protective space.
Design a tarpaulin support frame that includes lifting rails and a drive assembly. The drive assembly drives the lifting rails to move up and down, which in turn moves the gantry bracket and movable gantry frame up and down on the upper part of the carriage, realizing automatic leveling and height adjustment of the tarpaulin. A dustproof box and a slider structure prevent dust from entering and ensure the stable operation of the device.
It achieves automatic leveling and height adjustment of the tarpaulin, prevents dust from entering, extends the life of the device, ensures stability and safety during transportation, and improves the service life and transportation safety of the tarpaulin.
Smart Images
Figure CN224090104U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of truck tarpaulin technology, and in particular to an automatic leveling and stabilizing device for a tarpaulin support frame. Background Technology
[0002] Trucks, as transportation vehicles, undertake the task of transporting large quantities of powders, fragments, and other goods. To prevent goods from spilling out of the truck during transportation, tarpaulins are typically placed on top. However, traditional tarpaulins are usually laid flat on the surface of the goods, making it difficult to create a stable and regular protective space above them. In actual transportation scenarios, the height and shape of the goods loaded on trucks are often irregular, and flat tarpaulins are prone to localized looseness or tightness, potentially leading to damage due to uneven stress and spillage. A leveled tarpaulin is less likely to be blown over or torn, ensuring the safety of the goods during transportation. Furthermore, the height of the tarpaulin cannot be adjusted according to the amount of goods; as the amount of goods increases, leveling the tarpaulin becomes difficult. Therefore, an automatic leveling and stabilizing device for the tarpaulin support frame is needed, capable of effectively supporting and leveling the tarpaulin according to the amount of goods, forming a stable protective space. Utility Model Content
[0003] To address the problem of effectively supporting and leveling tarpaulins, this invention provides an automatic leveling and stabilizing device for a tarpaulin support frame.
[0004] This utility model provides an automatic leveling and stabilizing device for a tarpaulin support frame, comprising lifting steel rails respectively installed on the side walls of the carriage, with opposing gantry brackets fixedly mounted at both ends of the lifting steel rails, and a movable gantry frame movably mounted on the lifting steel rails, the movable gantry frame being connected to the tarpaulin, and a driving component connected to the lifting steel rails, the driving component being able to drive the lifting steel rails to move up and down on the side walls of the carriage, thereby driving the gantry brackets and the movable gantry frame to move up and down on the upper part of the carriage.
[0005] Furthermore, each end of the lifting rail is provided with a slider, and a vertical screw is provided inside the slider. The screw is located inside a dustproof box, and telescopic dustproof covers are respectively connected between the upper and lower ends of the slider and the dustproof box. The drive assembly drives the screw to rotate, thereby causing the lifting rail to move up and down along the screw.
[0006] Furthermore, the bottom of the dustproof box is provided with a drive box, and the drive assembly includes a drive rod and a power unit disposed in the drive box. Both ends of the drive rod are provided with bevel gear one, the screw extends downward and penetrates into the drive box, and is fitted with bevel gear two which is connected to bevel gear one in transmission. The drive rod is provided with a bearing seat supporting the drive rod, and the bearing seat is placed in the drive box.
[0007] Furthermore, the power unit includes a driven wheel mounted on a drive rod, a driving wheel mounted inside a dustproof box, a transmission belt connecting the driven wheel and the driving wheel, and a drive motor that drives the driving wheel to rotate.
[0008] Furthermore, the upper and lower end faces of the slider are formed with limit strips, which are placed inside the dustproof box.
[0009] Furthermore, the lifting rail forms a sliding track, and the movable gantry frame is provided with a moving wheel at one end of the lifting rail.
[0010] Furthermore, the gantry frame is equipped with a traction component, which can pull the movable gantry frame to move along the lifting rail. The traction component includes a fixed pulley group and a traction rope. The fixed pulley group is set on the gantry frame, and the traction rope is wrapped in a loop around the fixed pulley group. The movable gantry frame is fixedly connected to a point on the traction rope by a fixing block.
[0011] Furthermore, the pulley assembly is provided in two sets, the portal frame is formed with horizontal bars and vertical bars, the fixed pulley assembly includes a rotating pulley and a driving pulley, the driving pulley is set on the horizontal bar of the portal frame near the front wall of the carriage, and the rotating pulley is set on the horizontal bar of the portal frame away from the front wall of the carriage. A coaxial motor is provided between the two driving pulleys, and the output end of the coaxial motor is connected to the rotating shaft of the driving pulley.
[0012] Furthermore, the movable frame on the lifting rail is also provided with multiple portal-shaped sliding supports. The end of the sliding support that contacts the lifting rail is provided with a moving wheel, and the multiple sliding supports are arranged between the movable portal frame and the portal support near the front wall of the carriage.
[0013] Furthermore, the movable gantry frame is equipped with multiple clearance bars, and the clearance bars are equipped with rope loops for attaching tarpaulins.
[0014] In summary, this utility model has the following beneficial technical effects:
[0015] 1. The automatic leveling and stabilizing device for the tarpaulin support frame proposed in this utility model achieves automatic leveling and height adjustment. By setting lifting steel rails on both sides of the carriage, and using a drive assembly that can move the lifting steel rails up and down, the gantry-type bracket and movable gantry frame can be moved up and down in the upper part of the carriage. The height of the tarpaulin support frame can be automatically adjusted according to the loading height and quantity of goods, thereby achieving automatic leveling of the tarpaulin. This solves the problem that traditional tarpaulins cannot adjust their height according to the quantity of goods.
[0016] 2. This utility model ensures smooth lifting and dust prevention. Vertical screws are installed in the sliders at both ends of the lifting rail. The screws are placed in the dustproof box. A telescopic dustproof cover is connected between the slider and the dustproof box. The design of the dustproof box and the telescopic dustproof cover can effectively prevent dust and debris from entering the screws and other transmission components, reduce wear, extend the service life of the device, and ensure the long-term stable operation of the leveling function.
[0017] 3. This utility model features convenient traction and tarpaulin deployment. The traction component on the gantry frame, through fixed pulley sets and traction ropes, can move the movable gantry frame along the lifting rails. Two sets of fixed pulley sets, in conjunction with a coaxial motor drive, can move the movable gantry frame, facilitating the deployment and retraction of the tarpaulin. Simultaneously, the multiple sliding supports provide support, helping to create a flat and regular protective space. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of an automatic leveling and stabilizing device for a tarpaulin support frame according to an embodiment of this utility model.
[0019] Figure 2 This is another structural schematic diagram of an automatic leveling and stabilizing device for a tarpaulin support frame according to an embodiment of the present utility model.
[0020] Figure 3 This is an embodiment of the present utility model. Figure 2 A magnified view of part A in the image.
[0021] Figure 4 This is a structural schematic diagram of the movable gantry frame according to an embodiment of the present utility model.
[0022] Figure 5 This is a schematic diagram of the power unit according to an embodiment of the present invention.
[0023] Figure 6 This is a partial enlarged view of the interior of the dustproof box according to an embodiment of this utility model.
[0024] The components include: 1. Carriage; 2. Lifting rails; 201. Sliding rails; 3. Portal bracket; 301. Horizontal bar; 302. Vertical bar; 4. Movable portal frame; 401. Moving wheel; 402. Fixed block; 403. Clearance bar; 404. Rope loop; 5. Sliding bracket; 6. Dustproof box; 601. Slider; 602. Limit bar; 603. Screw; 604. Bevel gear II; 605. Telescopic dustproof cover; 7. Drive box; 701. Drive rod; 702. Bevel gear I; 703. Bearing seat; 8. Power unit; 801. Driven wheel; 802. Drive wheel; 803. Drive motor; 9. Traction assembly; 901. Fixed pulley block; 9011. Rotating pulley; 9012. Drive pulley; 902. Traction rope; 903. Coaxial motor. Detailed Implementation
[0025] The present invention will be further described in detail below with reference to the accompanying drawings.
[0026] Example 1
[0027] Reference Figure 1 and Figure 2 An automatic leveling and stabilizing device for a tarpaulin support frame according to this embodiment includes lifting steel rails 2 respectively installed on the two side walls of the carriage 1. The two ends of the lifting steel rails 2 are fixedly supported with opposing portal frames 3. A movable portal frame 4 is movably mounted on the lifting steel rails 2. The movable portal frame 4 is connected to the tarpaulin. The lifting steel rails 2 are connected to a driving component. The driving component can drive the lifting steel rails 2 to move up and down on the side walls of the carriage 1, so as to drive the portal frames 3 and the movable portal frame 4 to move up and down on the upper part of the carriage 1.
[0028] Among them, the lifting rail 2, as the core support and moving component, provides a moving track for the movable gantry frame 4 and other sliding supports 5. Its up-and-down movement function determines the overall height of the tarpaulin support frame, thereby realizing the adjustment of the tarpaulin height. When the height of the goods loaded on the truck is different, the up-and-down movement of the lifting rail 2 is controlled by the drive component to quickly adjust the space between the tarpaulin and the goods, ensuring that the tarpaulin can cover the goods tightly and flat, effectively preventing the goods from being damaged by shaking and friction with the tarpaulin during transportation.
[0029] Reference Figure 3 The lifting rail 2 is provided with sliders 601 at both ends. A vertical screw 603 is provided inside the slider 601. The screw 603 is located inside the dustproof box 6. Telescopic dustproof covers 605 are connected between the upper and lower ends of the slider 601 and the dustproof box 6. The driving component drives the screw 603 to rotate, so as to drive the lifting rail 2 to move up and down along the screw 603.
[0030] The slider 601 and the screw 603 form a transmission structure. The rotation of the screw 603 converts the rotary motion into the linear motion of the lifting rail 2, ensuring a smooth lifting process. The dustproof box 6 and the telescopic dustproof cover 605 provide protection, effectively preventing external dust and debris from entering the transmission components of the screw 603, avoiding wear and jamming of the screw 603 due to impurities, and ensuring the long-term stable operation of the lifting rail 2.
[0031] Reference Figure 5The dustproof box 6 has a drive box 7 at the bottom. The drive assembly includes a drive rod 701 and a power unit 8 disposed in the drive box 7. The two ends of the drive rod 701 are provided with bevel gear 702. The screw 603 extends downward and enters the interior of the drive box 7, and is fitted with a bevel gear 604 that is connected to the bevel gear 702. The drive rod 701 is provided with a bearing seat 703 that supports the drive rod 701. The bearing seat 703 is placed inside the drive box 7.
[0032] The drive rod 701 and the bevel gear set realize the transmission and conversion of power. When the drive rod 701 rotates, the bevel gear 702 at both ends meshes with the bevel gear 604 on the screw 603, converting the horizontal rotational motion of the drive rod 701 into the vertical rotational motion of the screw 603, thereby driving the lifting rail 2 to rise and fall. The bearing seat 703 provides stable support for the drive rod 701, reducing the shaking and friction during the rotation of the drive rod 701, and ensuring the efficiency and stability of power transmission.
[0033] Reference Figure 5 The power unit 8 includes a driven wheel 801 mounted on a drive rod 701, a drive wheel 802 mounted inside a dustproof box 6, a transmission belt connecting the driven wheel 801 and the drive wheel 802, and a drive motor 803 that drives the drive wheel 802 to rotate.
[0034] The drive motor 803 serves as the power source for the entire device. It drives the drive wheel 802 to rotate, which in turn drives the driven wheel 801 via the transmission belt, thereby driving the drive rod 701 to rotate and providing power for the movement of the lifting rail 2.
[0035] Reference Figure 6 The upper and lower end faces of the slider 601 form limiting strips 602, which are placed inside the dustproof box 6. The function of the limiting strips 602 is to limit the vertical movement distance of the slider 601 within the dustproof box 6.
[0036] The lifting rail 2 has a sliding track 201, and the movable gantry frame 4 is located at one end of the lifting rail 2 and is provided with a moving wheel 401. The sliding track 201 and the moving wheel 401 cooperate with each other to provide guidance and support for the movement of the movable gantry frame 4 on the lifting rail 2, so that the movable gantry frame 4 can slide smoothly along the lifting rail 2.
[0037] Reference Figure 2The portal frame 3 is equipped with a traction component 9, which can pull the movable portal frame 4 along the lifting rail 2. The traction component 9 includes a fixed pulley group 901 and a traction rope 902. The fixed pulley group 901 is mounted on the portal frame 3, and the traction rope 902 is wound in a loop around the fixed pulley group 901. The movable portal frame 4 is fixedly connected to a point on the traction rope 902 by a fixing block 402. The traction component 9 enables the movable portal frame 4 to move horizontally on the lifting rail 2. When it is necessary to unfold or retract the tarpaulin, the fixed pulley group 901 is driven to rotate by the coaxial motor 903, which drives the traction rope 902 to move, thereby pulling the movable portal frame 4 to move. This structure makes the unfolding and retracting of the tarpaulin more convenient and efficient.
[0038] Reference Figure 2 The pulley system comprises two sets. The portal frame 3 has a horizontal bar 301 and a vertical bar 302. The fixed pulley set 901 includes a rotating pulley 9011 and a driving pulley 9012. The driving pulley 9012 is mounted on the horizontal bar 301 of the portal frame 3 near the front wall of the carriage 1, and the rotating pulley 9011 is mounted on the horizontal bar 301 of the portal frame 3 away from the front wall of the carriage 1. A coaxial motor 903 is provided between the two driving pulleys 9012, and the output end of the coaxial motor 903 is connected to the rotating shaft of the driving pulley 9012. The two sets of fixed pulley sets 901 and the coaxial motor 903 work together to provide a stable driving force for the traction rope 902, ensuring that the movable portal frame 4 can move smoothly.
[0039] Reference Figure 2 The movable frame on the lifting rail 2 is also equipped with multiple portal-shaped sliding supports 5. Each sliding support 5 has a moving wheel 401 at the end that contacts the lifting rail 2. These sliding supports 5 are positioned between the movable portal frame 4 and the portal support 3 near the front wall of the carriage 1. The multiple sliding supports 5 provide auxiliary support and enhance stability. During the movement of the movable portal frame 4, the sliding supports 5 can share the weight of the tarpaulin. After the tarpaulin is unfolded, the sliding supports 5 are manually pulled to a certain position and then locked in place, providing support for the tarpaulin and forming a relatively enclosed cargo loading space.
[0040] Reference Figure 4 The movable gantry frame 4 is equipped with multiple clearance rods 403, and each clearance rod 403 has a rope loop 404 for attaching the tarpaulin. The clearance rods 403 and rope loops 404 provide a convenient way to secure the tarpaulin; workers can attach the tarpaulin to the rope loops 404 to achieve a fixed connection between the tarpaulin and the movable gantry frame 4. The clearance rods 403 keep the tarpaulin at a certain distance from the traction rope 902, reducing contact friction between the tarpaulin and the traction rope 902.
[0041] The working procedure is as follows: Based on the actual height of the cargo loaded on the truck, start the drive motor 803. The motor drives the drive wheel 802 to rotate, which in turn drives the driven wheel 801 via the transmission belt, causing the drive rod 701 to rotate. The bevel gear 702 at both ends of the drive rod 701 meshes with the bevel gear 604 on the screw 603, driving the screw 603 to rotate, which in turn drives the lifting rail 2 to move up and down along the screw 603. As the lifting rail 2 moves, the gantry bracket 3 and the movable gantry 4 rise or fall synchronously, adjusting to a suitable height so that the expected position of the tarpaulin after unfolding is at an appropriate distance from the top of the cargo, effectively covering the cargo without causing friction between the tarpaulin and the cargo during transportation due to excessive distance.
[0042] Hang one end of the tarpaulin on the rope loop 404 of the avoidance bar 403 of the movable gantry frame 4, and adjust the hanging position according to the size of the tarpaulin and the cargo covering requirements. Start the coaxial motor 903 to drive the drive pulley 9012 on the crossbar 301 of the gantry frame 3 near the front wall of the carriage 1 to rotate. Since the traction rope 902 is looped around the two sets of fixed pulleys 901, and the movable gantry frame 4 is connected to the traction rope 902 through the fixed block 402, when the drive pulley 9012 rotates, the traction rope 902 moves, pulling the movable gantry frame 4 along the lifting rail 2 in a direction away from the front wall of the carriage 1, thereby unfolding the tarpaulin.
[0043] Multiple sliding supports 5 are moved to assist in supporting the tarpaulin, and the positions of the sliding supports 5 and the movable gantry frame 4 are fixed to distribute the force on the movable gantry frame 4, keeping the tarpaulin flat and enhancing the stability of the entire tarpaulin support frame. The tarpaulin is then bound and secured. When the tarpaulin needs to be retracted, the coaxial motor 903 is first started in reverse, driving the pulley 9012 to rotate in the opposite direction. The traction rope 902 drives the movable gantry frame 4 along the lifting rail 2 towards the front wall of the carriage 1, retracting the tarpaulin. The tarpaulin is then removed from the rope loop 404 of the avoidance bar 403 of the movable gantry frame 4 and properly stored.
[0044] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.
Claims
1. An automatic leveling and stabilizing device for a tarpaulin support frame, characterized in that, The system includes lifting rails (2) respectively installed on both sides of the carriage (1). At both ends of the lifting rails (2), there are oppositely arranged gantry brackets (3). A movable gantry frame (4) is movably mounted on the lifting rails (2). The movable gantry frame (4) is connected to the tarpaulin. The lifting rails (2) are connected to a drive assembly. The drive assembly can drive the lifting rails (2) to move up and down on the side wall of the carriage (1) so as to drive the gantry brackets (3) and the movable gantry frame (4) to move up and down on the upper part of the carriage (1).
2. The automatic leveling and stabilizing device for the tarpaulin support frame according to claim 1, characterized in that, The lifting rail (2) is provided with sliders (601) at both ends. A vertical screw (603) is provided inside the slider (601). The screw (603) is located inside the dust box (6). Telescopic dust covers (605) are connected between the upper and lower ends of the slider (601) and the dust box (6). The drive assembly drives the screw (603) to rotate, so as to drive the lifting rail (2) to move up and down along the screw (603).
3. The automatic leveling and stabilizing device for the tarpaulin support frame according to claim 2, characterized in that, The dustproof box (6) has a drive box (7) at the bottom. The drive assembly includes a drive rod (701) and a power unit (8) located in the drive box (7). The two ends of the drive rod (701) are provided with bevel gears (702). The screw (603) extends downward and penetrates into the drive box (7), and is fitted with bevel gears (604) that are connected to the bevel gears (702) in a transmission. The drive rod (701) is provided with a bearing seat (703) that supports the drive rod (701). The bearing seat (703) is located in the drive box (7).
4. The automatic leveling and stabilizing device for the tarpaulin support frame according to claim 3, characterized in that, The power unit (8) includes a driven wheel (801) mounted on a drive rod (701), a drive wheel (802) mounted in a dustproof box (6), a transmission belt connecting the driven wheel (801) and the drive wheel (802), and a drive motor (803) that drives the drive wheel (802) to rotate.
5. The automatic leveling and stabilizing device for the tarpaulin support frame according to claim 4, characterized in that, Limiting strips (602) are formed on the upper and lower end faces of the slider (601), and the limiting strips (602) are placed inside the dustproof box (6).
6. The automatic leveling and stabilizing device for the tarpaulin support frame according to claim 5, characterized in that, The lifting rail (2) forms a sliding track (201), and the movable gantry frame (4) is located at one end of the lifting rail (2) and is equipped with a moving wheel (401).
7. The automatic leveling and stabilizing device for the tarpaulin support frame according to claim 6, characterized in that, The portal frame (3) is equipped with a traction component (9), which can pull the movable portal frame (4) to move along the lifting rail (2). The traction component (9) includes a fixed pulley group (901) and a traction rope (902). The fixed pulley group (901) is set on the portal frame (3), and the traction rope (902) is wrapped in a loop around the fixed pulley group (901). The movable portal frame (4) is fixedly connected to a point on the traction rope (902) by a fixing block (402).
8. The automatic leveling and stabilizing device for the tarpaulin support frame according to claim 7, characterized in that, The pulley assembly is provided in two sets. The portal frame (3) forms a horizontal bar (301) and a vertical bar (302). The fixed pulley assembly (901) includes a rotating pulley (9011) and a driving pulley (9012). The driving pulley (9012) is set on the horizontal bar (301) of the portal frame (3) near the front wall of the carriage (1). The rotating pulley (9011) is set on the horizontal bar (301) of the portal frame (3) away from the front wall of the carriage (1). A coaxial motor (903) is provided between the two driving pulleys (9012). The output end of the coaxial motor (903) is connected to the rotating shaft of the driving pulley (9012).
9. The automatic leveling and stabilizing device for the tarpaulin support frame according to claim 8, characterized in that, The movable frame on the lifting rail (2) is also provided with multiple portal-shaped sliding supports (5). The end of the sliding support (5) that contacts the lifting rail (2) is provided with a moving wheel (401). Multiple sliding supports (5) are arranged between the movable portal frame (4) and the portal support (3) near the front wall of the carriage (1).
10. The automatic leveling and stabilizing device for the tarpaulin support frame according to claim 9, characterized in that, The movable gantry frame (4) is provided with multiple clearance bars (403), and the clearance bars (403) are provided with rope loops (404) for hanging tarpaulins.