Convenient lifting appliance for carrying U-shaped precast concrete drainage channel

Abstract

A convenient lifting appliance for carrying a U-shaped precast concrete drainage channel comprises a longitudinal bearing plate, a cross beam is arranged on the longitudinal bearing plate in a sliding mode, pressing levers are hinged to the two sides of the bottom of the longitudinal bearing plate correspondingly, and rectangular clamp blocks are oppositely hinged to the ends of the two pressing levers correspondingly; gravity springs are arranged between the pressing lever and the longitudinal bearing plates on the two sides of the lower portion of the cross beam respectively, and the unloading handle is arranged on the pressing lever. Compared with the prior art, each connecting part adopts a hinge joint form of the shaft pin, so that the transmission is more reliable and safer, the semi-automatic operation of a hoisted object is realized, the working efficiency can be obviously improved, the labor intensity is reduced, and the convenience, the efficiency and the safety in the carrying process of the concrete drainage channel are ensured; and the hoisting operation and on-site construction requirements of a large batch of U-shaped precast concrete drainage channels (or other similar objects) can be fully met.

Description

Technical Field

[0001] This utility model relates to the field of concrete component hoisting technology, and in particular to a convenient hoisting tool for transporting U-shaped precast concrete drainage channels. Background Technology

[0002] U-shaped precast concrete drainage channels are one of the most widely used concrete components in municipal and water conservancy engineering construction. There are many ways to lift such objects, but the most common method in existing technology is to use two tension clamps, through the load-bearing structure of a spreader beam, to clamp the jaws of the U-shaped precast concrete drainage channel on both sides for lifting operations.

[0003] It is obvious that this lifting method requires two clamps, and before lifting or unloading, the jaws of the clamps must be manually aligned with the vertical edges on both sides of the concrete drainage channel for clamping or removing, which is inefficient and inconvenient. Therefore, how to develop a convenient lifting tool for transporting U-shaped precast concrete drainage channels that can solve the problems of existing technology has become a technical problem to be solved. Utility Model Content

[0004] Based on the aforementioned technical problems, this utility model proposes a convenient lifting tool for transporting U-shaped precast concrete drainage channels, in order to solve the problems existing in the background technology.

[0005] In view of this, the present invention proposes a convenient lifting tool for transporting U-shaped precast concrete drainage channels, comprising: a longitudinal bearing plate, on which a crossbeam is slidably mounted, and on both sides of the bottom of the longitudinal bearing plate, pressure levers are hinged, and rectangular clamps are respectively hinged to the ends of the two sets of pressure levers, and gravity springs are respectively provided between the pressure levers and the longitudinal bearing plates on both sides of the lower part of the crossbeam, and also includes an unloading handle, which is mounted on the pressure levers.

[0006] Furthermore, the rectangular clamp is made of steel plate, and a rubber plate is provided on the outside of the steel plate.

[0007] Furthermore, the pressure lever is provided with multiple sets of positioning holes in sequence, and the end of the gravity spring is detachably hung in the positioning holes.

[0008] Furthermore, a beam limiting plate is provided on the longitudinal bearing plate below the beam, which is used to limit the safe distance of the beam on the longitudinal bearing plate.

[0009] Furthermore, the rectangular clamp block is provided with a rectangular clamp block lug, and the end of the pressure lever is hinged to the rectangular clamp block lug.

[0010] Furthermore, the rectangular clamp lugs are positioned slightly below the center of the rectangular clamp.

[0011] Furthermore, the longitudinal bearing plate and the pressure lever are hinged together by a pin.

[0012] Furthermore, the crossbeam is a double-beam structure with intervals, and the longitudinal load-bearing plate and the unloading handle are both set in the gap between the double beams. The outer side of the crossbeam of the double beam is respectively provided with a stop block structure.

[0013] Furthermore, it also includes a lifting pin, and the longitudinal bearing plates are in multiple sets, with the upper part of the multiple sets of longitudinal bearing plates spaced apart on the lifting pin, and spacer sleeves are provided between the longitudinal bearing plates.

[0014] This invention proposes a convenient lifting tool for transporting U-shaped precast concrete drainage channels. Compared with the prior art, this invention utilizes a lifting method that generates friction with the inner wall of the concrete drainage channel. Especially for concrete components, in the case of large-scale hoisting, it can make the loading and unloading of U-shaped precast concrete drainage channels convenient, fast, safe and reliable.

[0015] All connecting parts of this utility model adopt the hinged form of axle pins, which makes the transmission more reliable and safer. It realizes semi-automatic operation of the hoisted objects, which can significantly improve work efficiency, reduce labor intensity, and ensure convenience, efficiency and safety in the process of transporting concrete drainage troughs. It can fully meet the hoisting operation and on-site construction requirements of large-scale U-shaped precast concrete drainage troughs (or other similar objects). Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of this utility model is shown;

[0017] Figure 2 A schematic diagram of the structural hoisting of this utility model is shown. Figure 1 ;

[0018] Figure 3 A schematic diagram of the structural hoisting of this utility model is shown. Figure 2 ;

[0019] In the diagram: 1. Lifting pin; 2. Longitudinal bearing plate; 3. Unloading handle; 4. Crossbeam; 5. Rectangular clamp block; 6. Pressure lever; 7. Pin; 8. Crossbeam limiting plate; 9. Gravity spring; 10. Rectangular clamp block ear plate; 10. Stop block structure. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the contents disclosed below.

[0022] The following combination Figures 1 to 3 The technical solution of this utility model will be further explained.

[0023] First embodiment, such as Figures 1 to 3 As shown: A convenient lifting tool for transporting U-shaped precast concrete drainage channels, comprising a longitudinal load-bearing plate 2, on which a crossbeam 4 is slidably mounted, and on both sides of the bottom of the longitudinal load-bearing plate 2, pressure levers 6 are hinged, and rectangular clamping blocks 5 are respectively hinged to the ends of the two sets of pressure levers 6. Gravity springs 9 are respectively provided between the pressure levers 6 and the longitudinal load-bearing plates 2 on both sides of the lower part of the crossbeam 4. It also includes an unloading handle 3, which is mounted on the pressure levers 6.

[0024] The rectangular clamp block 5 is made of steel plate, and a rubber plate is provided on the outside of the steel plate. Multiple sets of positioning holes are sequentially provided on the pressure lever 6, and the end of the gravity spring 9 is detachably hung in the positioning holes. A beam limiting plate 8 is provided on the longitudinal support plate 2 below the beam 4, and the beam limiting plate 8 is used to limit the safe distance of the beam 4 on the longitudinal support plate 2.

[0025] The rectangular clamp block 5 is provided with a rectangular clamp block lug plate 10, and the end of the pressure lever 6 is hinged to the rectangular clamp block lug plate 10. The rectangular clamp block lug plate 10 is located slightly below the center of the rectangular clamp block 5. The longitudinal load-bearing plate 2 and the pressure lever 6 are hinged in three directions by a pin 7.

[0026] The crossbeam 4 is a double beam structure with intervals. The longitudinal load-bearing plate 2 and the unloading handle 3 are both set in the gap between the double beams. The outer side of the crossbeam 4 of the double beams is provided with a stop block structure 11. The installation angle of the stop block structure 11 is adapted to the inclination angle of the drainage channel.

[0027] It also includes a lifting pin 1, and the longitudinal bearing plates 2 are in multiple sets. The upper part of the multiple sets of longitudinal bearing plates 2 is spaced apart on the lifting pin 1, and spacer sleeves are provided between the longitudinal bearing plates 2, which can complete the simultaneous lifting of multiple sets of drainage channels.

[0028] The bottom end of the longitudinal lifting plate 2 is hinged to the left and right pressure levers 6, and the other end of the left and right pressure levers 6 is hinged to the left and right rectangular clamps 5 respectively through lifting lugs and pins. The left and right pressure levers 6 are connected to the longitudinal lifting plate 2 through gravity springs 9, and auxiliary unloading handles 3 are also provided on them.

[0029] During use, the longitudinal lifting plate 2 moves upward, which makes the pressure lever 6 longer in the horizontal direction to apply pressure to the rectangular clamp block assembly 5 on both sides, thereby achieving gravity balance. As the longitudinal load-bearing beam of the lifting device is further lifted upward, the friction between the rectangular clamp block 5 and the inner wall of the concrete drainage channel is further increased, which can smoothly lift the U-shaped drainage channel upward and transport it to the required location.

[0030] The gravity spring 9 serves to pull up the left and right rectangular clamps 5, preventing them from falling due to their own weight. The auxiliary unloading handle 3 allows manual control of the opening and closing size of the left and right rectangular clamps 5 during lifting or unloading. The left and right rectangular clamps 5 are composites with high-friction rubber plates embedded on the outside of the steel plates to meet the friction requirements with the surface of the concrete components.

[0031] The double crossbeams 4 are respectively installed on both sides of the longitudinal lifting plate 2, with a gap in the middle allowing the longitudinal lifting plate 2 and auxiliary unloading handle 3 to pass through while being positioned and restricted around the perimeter. Small stop structures 11 are also installed at both ends, blocking the outside of the concrete cover plate's vertical edge. Their main function is to prevent the concrete cover plate from rotating freely after being lifted, thus preventing damage to the new lifting equipment. The crossbeam limiting plate 8 is located slightly below the longitudinal lifting plate 2 and below the crossbeams, its purpose being to restrict the longitudinal position of the crossbeams.

[0032] The lifting lugs on the left and right rectangular clamp blocks 5 are designed to be slightly lower. Under the influence of the weight of the rectangular clamp blocks 5 themselves, the lower end of the rectangular clamp blocks 5 will slightly contract inward when there is no external force interference. This makes it easier for the rectangular clamp blocks 5 to become roughly wedge-shaped and to be inserted into the concrete drainage channel more conveniently.

[0033] The left and right pressure levers 6 are also equipped with multiple small holes in different positions to facilitate the appropriate adjustment of the spring tension, which can be adapted to the adjustment of the position of the components below. Spacer sleeves are installed between the multiple longitudinal lifting plates 2 to facilitate the installation and layout of the lower left and right pressure levers 6.

[0034] Transportation process: The lifting device's pin 1 is connected to the longitudinal support plate 2, which is the component to be towed by the hook or other rigging (not shown in the diagram). When the lifting equipment hoists the lifting device above the U-shaped precast concrete drainage ditch, it is slowly lowered into place, aligned with its upper opening (manual positioning is required when using flexible ropes on the lifting equipment). The descent stops when the double crossbeams of the new lifting device are smoothly placed on the concrete drainage ditch.

[0035] Then the lifting equipment rises, causing the longitudinal support plate 2 to move upwards. Since the rectangular clamps 5 have already come into contact with the inner wall of the drainage ditch during the descent (due to the wedge-shaped tendency of the design), friction between the rectangular clamps 5 and the inner wall of the drainage ditch has already been generated. As the longitudinal support plate 2 gradually moves upwards, it causes the left and right pressure levers 6 to change their angle, increasing their horizontal dimension and applying greater pressure to the rectangular clamps 5 on both sides. This increases the positive pressure on the inner wall of the drainage ditch, and the corresponding friction also increases, until the U-shaped precast concrete drainage ditch is lifted as a whole. At this point, the friction and gravity reach equilibrium, the transportation process can be carried out safely, and the precast concrete drainage ditch can be transported to the designated location.

[0036] Unloading process: Once the U-shaped precast concrete drainage ditch is hoisted to the designated position, it can be slowly lowered. At this time, manual assistance is used to gently press down on the unloading handle 3 to release the pressure of the rectangular clamps 5 on the inner wall of the concrete drainage ditch. The new type of lifting device can then rise and detach from the precast concrete drainage ditch, completing a single hoisting operation.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A convenient lifting device for U-shaped prefabricated concrete drainage channel transportation, characterized in that: Including longitudinal bearing plate, the longitudinal bearing plate is slidably provided with a cross beam, the bottom of the longitudinal bearing plate is hingedly provided with a pressure lever on both sides, the ends of the two groups of pressure levers are respectively hingedly provided with a rectangular clamp block, the pressure lever and the longitudinal bearing plate on both sides of the lower part of the cross beam are respectively provided with a gravity spring, and the unloading handle is arranged on the pressure lever.

2. The convenient lifting tool for U-shaped prefabricated concrete drainage channel transportation according to claim 1, characterized in that: The material of the rectangular clamp block includes a steel plate, and the outer side of the steel plate is provided with a rubber plate.

3. The convenient lifting tool for U-shaped prefabricated concrete drainage channel transportation according to claim 2, characterized in that: A plurality of positioning holes are sequentially arranged on the pressure lever, and the end of the gravity spring is detachably hung in the positioning hole.

4. The convenient lifting tool for U-shaped prefabricated concrete drainage channel transportation according to claim 3, characterized in that: The longitudinal bearing plate below the cross beam is provided with a cross beam limiting plate, and the cross beam limiting plate is used for limiting the safe distance of the cross beam on the longitudinal bearing plate.

5. The convenient lifting tool for U-shaped prefabricated concrete drainage channel transportation according to claim 4, characterized in that: The rectangular clamp block is provided with a rectangular clamp block ear plate, and the end of the pressure lever is hingedly arranged on the rectangular clamp block ear plate.

6. The convenient lifting tool for U-shaped prefabricated concrete drainage channel transportation according to claim 5, characterized in that: The position of the rectangular clamp block ear plate on the rectangular clamp block is located in the lower part of the rectangular clamp block.

7. The convenient lifting tool for U-shaped prefabricated concrete drainage channel transportation according to claim 6, characterized in that: The longitudinal bearing plate and the pressure lever are hingedly arranged through a pin shaft.

8. The convenient lifting tool for U-shaped prefabricated concrete drainage channel transportation according to claim 7, characterized in that: The cross beam is a double-beam structure arranged at intervals, the longitudinal bearing plate and the unloading handle are arranged in the gap of the double-beam, and the outer sides of the cross beams of the double-beam are respectively provided with a stop block structure.

9. The convenient lifting tool for U-shaped prefabricated concrete drainage channel transportation according to claim 8, characterized in that: It also includes a sling pin shaft, the longitudinal bearing plate is a plurality of groups, and the upper parts of the plurality of groups of longitudinal bearing plates are arranged on the sling pin shaft at intervals, and the longitudinal bearing plates are respectively provided with a spacing sleeve.

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