Material lifting device for water conservancy construction

Abstract

The utility model discloses a material lifting device for water conservancy construction, which comprises a crane and a lifting frame, pin shafts are rotatably arranged among rotatably connected parts of the crane, oil injection grooves are arranged on the pin shafts, lubricating grooves are communicated in the oil injection grooves, balls are rotatably arranged in the circumferential direction of the pin shafts, and clamping screw rods and clamping slide rods are arranged on the lifting frame. A clamping frame is arranged on the clamping screw rod and the clamping sliding rod, a clamping claw is arranged on one side of the clamping frame, a moving gear is arranged on the clamping screw rod, a moving rack is arranged on the lifting frame in a sliding mode, a moving handle is arranged at one end of the moving rack, lifting hooks are arranged on the two sides of the lifting frame, the moving rack drives the moving gear to rotate, and then the clamping screw rod is driven to rotate; the clamping screw drives the clamping frame and the clamping jaw to move to clamp long-strip-shaped objects such as steel bars, lubricating oil enters the lubricating groove to lubricate the balls, crane components are lubricated through the balls, and abrasion is reduced.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering technology, and more specifically, it relates to a material lifting device for water conservancy construction. Background Technology

[0002] In water conservancy projects (such as the construction of dams, sluices, and canals), it is often necessary to lift large quantities of materials such as sand, gravel, concrete, steel bars, and equipment vertically or at an incline from low places (such as the ground or material yard) to high working surfaces (such as dam bodies or piers). Traditional methods mainly rely on winches in conjunction with baskets or hooks, as well as tower cranes and simple gantry cranes.

[0003] In existing technologies, water conservancy construction requires the hoisting of materials of various shapes, such as stones and steel bars. Traditional suspended platforms cannot simultaneously meet the needs of transporting block materials and binding and hoisting long strips of raw materials (such as steel bars), resulting in low hoisting efficiency and poor safety. The crane pins rotate under heavy load for a long time, and insufficient lubrication leads to increased wear of the balls and bushings, requiring frequent shutdowns for maintenance. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides a material lifting device for water conservancy construction to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a material lifting device for water conservancy construction, comprising a crane and a lifting frame, wherein each rotatably connected component of the crane is provided with a pin, the pin is provided with an oil injection groove, the oil injection groove is connected to a lubrication groove, the pin is provided with a ball bearing for circumferential rotation, the lifting frame is provided with a clamping screw and a clamping slide rod, the clamping screw and the clamping slide rod are provided with a clamping frame, one side of the clamping frame is provided with a clamping claw, the clamping screw is provided with a moving gear, the lifting frame is slidably provided with a moving rack, one end of the moving rack is provided with a moving handle, and the two sides of the lifting frame are provided with hooks.

[0008] The present invention is further configured such that a pressing rod is slidably provided on the pin shaft, and a pressing plate is provided at one end of the pressing rod and a piston plate is provided at the other end. By moving the pressing plate, the pressing rod and the piston plate are driven to press the lubricating oil, so as to facilitate the injection of the lubricating oil into the lubrication groove.

[0009] The present invention is further configured such that a compression spring is provided between the compression plate and the pin to provide the piston plate with a continuous and stable elastic force.

[0010] The present invention is further provided that one end of the oil injection groove is provided with a movable groove, and one end of the movable groove is provided with an oil injection hole, so as to facilitate oil injection into the oil injection groove and the lubrication groove through the oil injection hole.

[0011] The present invention is further configured such that a baffle is provided in the movable groove, and a movable spring is provided between the baffle and the movable groove, so as to facilitate the baffle to be squeezed and reset, thereby blocking the oil injection hole.

[0012] The present invention is further configured such that one end of the clamping screw is provided with a ratchet gear, and a limiting strip is provided on the hoisting frame via a torsion spring. The position of the clamping screw is fixed by the cooperation of the ratchet gear and the limiting strip.

[0013] The present invention is further configured such that a limiting seat and a limiting handle are provided on one side of the limiting strip, which facilitates the movement of the limiting strip.

[0014] The present invention is further configured such that a reset rod is provided at the bottom of the hoisting frame, and reset plates are slidably provided on both sides of the moving rack on the reset rod. A reset spring is provided between the reset plate and the hoisting frame to facilitate the resetting of the moving rack and the moving handle.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a material lifting device for water conservancy construction, which has the following beneficial effects:

[0017] 1. By installing hooks on both sides of the hoisting frame, it is easy to connect directly with traditional suspended baskets to transport materials such as stones. It can also tie and hoist the ends of strip materials such as steel bars, thus improving the adaptability of the crane to hoisted items.

[0018] 2. The moving rack drives the moving gear to rotate, which in turn drives the clamping screw to rotate. The clamping screw drives the clamping frame and clamping claws to move, clamping long strip-shaped items such as steel bars. The position of the clamping screw and clamping claws is restricted by the cooperation of the clamping wheel and the limiting strip, which improves the support stability and safety.

[0019] 3. Oil is injected into the oil injection groove and lubrication groove through the oil injection hole. Under the elastic force of the compression spring, the piston plate causes the lubricating oil to enter the lubrication groove, lubricates the balls, and lubricates the crane parts through the balls, reducing wear. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a material lifting device for water conservancy construction according to the present invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of the hoisting frame in this utility model;

[0022] Figure 3 for Figure 2 A magnified schematic diagram of a portion of the structure of A in the diagram;

[0023] Figure 4 This is a schematic diagram of the cooperative structure of the clamping screw, clamping slide bar, clamping frame, clamping claw, moving gear, moving rack and moving handle in this utility model;

[0024] Figure 5 This is a cross-sectional view of the pin shaft in this utility model.

[0025] In the diagram: 1. Crane; 2. Lifting frame; 3. Pin; 4. Oil filling groove; 5. Lubrication groove; 6. Ball bearing; 7. Clamping screw; 8. Clamping slide bar; 9. Clamping frame; 10. Clamping claw; 11. Moving gear; 12. Moving rack; 13. Moving handle; 14. Hook; 15. Extrusion rod; 16. Extrusion plate; 17. Piston plate; 18. Extrusion spring; 19. Movable groove; 20. Oil filling hole; 21. Baffle; 22. Movable spring; 23. Ratchet; 24. Limit bar; 25. Limit seat; 26. Limit handle; 27. Reset rod; 28. Reset plate; 29. ​​Reset spring. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] Please see Figures 1-5A material lifting device for water conservancy construction includes a crane 1 and a lifting frame 2. The crane 1 has rotatable pins 3 connecting its rotating components. Each pin 3 has an oil inlet 4, and a lubrication groove 5 is connected within the oil inlet 4. Ball bearings 6 rotate circumferentially on the pin 3. The lifting frame 2 has a clamping screw 7 and a clamping slide bar 8. A clamping frame 9 is mounted on the clamping screw 7 and the clamping slide bar 8. A clamping claw 10 is located on one side of the clamping frame 9. A moving gear 11 is mounted on the clamping screw 7. The lifting frame 2... A sliding rack 12 is provided, with a sliding handle 13 at one end of the rack 12. Hooks 14 are provided on both sides of the hoisting frame 2. A ratchet 23 is provided at one end of the clamping screw 7. A limiting strip 24 is provided on the hoisting frame 2 via a torsion spring. A limiting seat 25 and a limiting handle 26 are provided on one side of the limiting strip 24. A reset rod 27 is provided at the bottom of the hoisting frame 2. Reset plates 28 are slidably provided on both sides of the sliding rack 12 on the reset rod 27. A reset spring 29 is provided between the reset plate 28 and the hoisting frame 2.

[0030] In this embodiment, the crane 1 of this application is compatible with most models in the prior art. It mainly consists of a lifting boom, a lifting jib, and hydraulic cylinders that drive the lifting boom and the lifting jib. When using a basket for hoisting, the lifting points of the basket are symmetrically connected to the hook 14. When it is necessary to hoist strip-shaped objects such as steel bars, the two ends of the steel bars are tied and connected to the hook 14. The middle section of the steel bars is connected by the clamping claws 10. Pulling the limit handle 26 upward causes the limit bar 24 to disengage from the ratchet 23, and the moving handle 13 moves upward. The moving handle 13 drives the moving rack 12 to move upward, and drives the reset plate 28 to compress the reset spring 29. The moving rack 12 moves upward, causing the moving gear 11 to rotate. The rotation of the moving gear 11 causes the clamping frame 9 and the clamping claw 10 to move towards the center position to clamp the steel bar. After the clamping is stable, the limit handle 26 is released, and the limit bar 24 engages with the ratchet 23 to fix the position of the moving gear 11 and the clamping screw 7, preventing the clamping claw 10 from loosening. This clamps the center part of the steel bar, improving the safety of the hoisting. When disassembling the steel bar, the limit handle 26 is pulled again. Through the elastic force of the return spring 29, the moving rack 12 is reset, and then the moving gear 11 reverses, causing the clamping frame 9 and the clamping claw 10 to reset.

[0031] Please see Figures 4-5 As one embodiment of the pin 3: a pressing rod 15 is slidably provided on the pin 3, a pressing plate 16 is provided at one end of the pressing rod 15, a piston plate 17 is provided at the other end, a pressing spring 18 is provided between the pressing plate 16 and the pin 3, a movable groove 19 is provided at one end of the oil filling groove 4, an oil filling hole 20 is provided at one end of the movable groove 19, a baffle 21 is provided in the movable groove 19, and a movable spring 22 is provided between the baffle 21 and the movable groove 19.

[0032] More specifically, when lubricating the pin 3, the extrusion plate 16 and extrusion rod 15 are pulled upwards, which in turn pulls the extrusion spring 18. At the same time, the extrusion rod 15 drives the piston plate 17 to move upwards, which in turn drives the baffle 21 to move upwards and squeeze the movable spring 22. The baffle 21 moves upwards to open the oil injection hole 20 and inject lubricating oil into the oil injection groove 4. After the injection is completed, the extrusion plate 16 is released. Under the elastic force of the extrusion spring 18, the extrusion plate 16 moves downwards, which drives the extrusion rod 15 and piston plate 17 to squeeze the lubricating oil. The baffle 21 is blocked at the oil injection hole 20 under the elastic force of the movable spring 22 to prevent oil leakage and lubricating oil contamination. Under pressure, the lubricating oil enters the lubrication groove 5 from the oil injection groove 4. When the components of the crane 1 rotate, the friction between the components is reduced by the ball bearings 6, and the ball bearings 6 pick up the lubricating oil and lubricate the components of the crane 1.

[0033] In summary, during the use or operation of the overall equipment: the crane 1 in this application is compatible with most existing models and mainly consists of a lifting boom, a lifting jib, and hydraulic cylinders that drive the lifting boom and the lifting jib. When using a suspended platform for hoisting, the lifting points of the suspended platform are symmetrically connected to the hook 14. When it is necessary to hoist strip-shaped objects such as steel bars, the two ends of the steel bars are tied together and connected to the hook 14. The middle section of the steel bar is connected by the clamping claws 10. Pulling the limit handle 26 upward causes the limit bar 24 to disengage from the ratchet 23, and the moving handle 13 moves upward. The moving handle 13 drives the moving rack 12 to move upward and causes the reset plate 28 to compress and reset. Spring 29 moves the moving rack 12 upward, causing the moving gear 11 to rotate. The rotation of the moving gear 11 causes the clamping frame 9 and the clamping claw 10 to move towards the center position to clamp the steel bar. After the clamping is stable, the limit handle 26 is released, and the limit bar 24 engages with the ratchet 23 to fix the position of the moving gear 11 and the clamping screw 7, preventing the clamping claw 10 from loosening. This clamps the center part of the steel bar, improving the safety of hoisting. When disassembling the steel bar, the limit handle 26 is pulled again. Through the elastic force of the return spring 29, the moving rack 12 is reset, and then the moving gear 11 reverses, causing the clamping frame 9 and the clamping claw 10 to reset.

[0034] When lubricating the pin 3, the extrusion plate 16 and extrusion rod 15 are pulled upward, which in turn pulls the extrusion spring 18. At the same time, the extrusion rod 15 drives the piston plate 17 to move upward, which drives the baffle 21 to move upward and squeeze the movable spring 22. The baffle 21 moves upward to open the oil injection hole 20 and inject lubricating oil into the oil injection groove 4. After the injection is completed, the extrusion plate 16 is released. The extrusion plate 16 moves downward under the elastic force of the extrusion spring 18, which drives the extrusion rod 15 and piston plate 17 to squeeze the lubricating oil. The baffle 21 is blocked at the oil injection hole 20 under the elastic force of the movable spring 22 to prevent oil leakage and lubricating oil contamination. Under pressure, the lubricating oil enters the lubrication groove 5 from the oil injection groove 4. When the components of the crane 1 rotate, the friction between the components is reduced by the ball bearings 6, and the ball bearings 6 pick up the lubricating oil and lubricate the components of the crane 1.

[0035] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.

[0036] In all the solutions mentioned above, the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although the embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

[0037] In all the solutions mentioned above, those involving the operation of electrical components, unless otherwise specified, are controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and circuit connections are existing, well-known, and mature technologies, and their electrical connection relationships and specific circuit structures will not be elaborated here.

[0038] Of all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are existing known technologies, and this utility model will not elaborate on them.

Claims

1. A material lifting device for water conservancy construction, comprising a crane (1) and a lifting frame (2), characterized in that: The crane (1) is provided with a pivot pin (3) for each rotating connected component. The pivot pin (3) is provided with an oil injection groove (4). The oil injection groove (4) is connected to a lubrication groove (5). The pivot pin (3) is provided with a ball bearing (6) for circumferential rotation. The hoisting frame (2) is provided with a clamping screw (7) and a clamping slide bar (8). The clamping screw (7) and the clamping slide bar (8) are provided with a clamping frame (9). The clamping frame (9) is provided with a clamping claw (10) on one side. The clamping screw (7) is provided with a moving gear (11). The hoisting frame (2) is provided with a moving rack (12). The moving rack (12) is provided with a moving handle (13) at one end. The hoisting frame (2) is provided with hooks (14) on both sides.

2. The material lifting device for water conservancy construction according to claim 1, characterized in that: A pressing rod (15) is slidably provided on the pin (3). One end of the pressing rod (15) is provided with a pressing plate (16), and the other end is provided with a piston plate (17).

3. The material lifting device for water conservancy construction according to claim 2, characterized in that: A compression spring (18) is provided between the compression plate (16) and the pin (3).

4. A material lifting device for water conservancy construction according to claim 3, characterized in that: One end of the oil filling groove (4) is provided with a movable groove (19), and one end of the movable groove (19) is provided with an oil filling hole (20).

5. A material lifting device for water conservancy construction according to claim 4, characterized in that: A baffle (21) is provided inside the movable groove (19), and a movable spring (22) is provided between the baffle (21) and the movable groove (19).

6. A material lifting device for water conservancy construction according to claim 1, characterized in that: One end of the clamping screw (7) is provided with a ratchet (23), and the lifting frame (2) is provided with a limiting strip (24) through a torsion spring.

7. A material lifting device for water conservancy construction according to claim 6, characterized in that: The limiting strip (24) has a limiting seat (25) and a limiting handle (26) on one side.

8. A material lifting device for water conservancy construction according to claim 7, characterized in that: The bottom of the hoisting frame (2) is provided with a reset rod (27), and the two sides of the moving rack (12) are provided with reset plates (28) sliding on the reset rod (27). A reset spring (29) is provided between the reset plate (28) and the hoisting frame (2).

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