A lifting device with adjustable load-bearing capacity

Abstract

The present invention discloses a lifting device with adjustable load-bearing capacity, comprising a fixed frame, a support leg is fixedly connected to the outer wall of the bottom of the fixed frame, a motor is fixedly connected to the top of the fixed frame, a sprocket is fixedly connected to the front of the motor through a coupling, a gearbox is arranged on the right side of the sprocket, a chain is drivingly connected to the outer wall of the sprocket, one end of the chain runs through the gearbox, the bottom of the gearbox is fixedly connected to the top of the fixed frame, and an automatic load-bearing stabilization mechanism is arranged inside the fixed frame, which relates to the technical field of cranes. The lifting device with adjustable load-bearing capacity, by arranging an automatic load-bearing stabilization mechanism, maintains the overall balance of the fixed frame and the support leg when different weights are pressed down, avoids the situation that the fixed frame and the support leg tilt and overturn when the rope is lifted by overloaded cargo, and then automatically adjusts its own load-bearing capacity according to the cargo, and greatly improves the stability.

Description

Technical Field

[0001] The invention relates to the technical field of cranes, in particular to a lifting device with adjustable load-bearing capacity. Background Art

[0002] A crane is a multi-action lifting machine that can lift and carry heavy objects vertically and horizontally within a certain range. Also known as an overhead crane, an overhead crane, or a crane, some lifting equipment has the working characteristic of intermittent movement, that is, the corresponding mechanisms of material collection, transportation, unloading, etc. work alternately in a working cycle. Cranes are developing and using more and more widely in the market. Because there are often accidents when lifting and traveling with loads without outriggers, the speed of travel is also faster than that of crawler cranes (crawler cranes); the operation is stable, the lifting capacity is large, and the load can be lifted and traveled within a specific range, but the road must be flat and solid, the tire pressure meets the requirements, and the lifting distance from the ground must not exceed 50CM; it is forbidden to travel long distances with loads. In order to ensure the safety of the operation, it is basically forbidden to carry out lifting operations without outriggers in China. The types of wire ropes used in conjunction with cranes include phosphate-coated wire ropes, galvanized wire ropes, and smooth wire ropes. However, when lifting, transferring and transporting goods such as small factories, the small cranes currently used are often supported by supporting legs and are not fixed by the foundation. When lifting heavy goods, the small cranes are prone to imbalance and cannot automatically adjust the load-bearing capacity of the corresponding weight of the goods, resulting in a significant reduction in work efficiency. Mistakes are also prone to cause the small crane to tip over. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a lifting device with adjustable load-bearing capacity, which solves the problem that when lifting, transferring and transporting heavy goods in small factories, etc., small cranes become unbalanced and cannot automatically adjust the corresponding load-bearing capacity, resulting in reduced work efficiency and rollover.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a lifting device with adjustable load-bearing capacity, comprising a fixed frame, a bottom outer wall of the fixed frame is fixedly connected to a support leg, a top of the fixed frame is fixedly connected to a motor, a front side of the motor is fixedly connected to a sprocket through a coupling, a gearbox is provided on the right side of the sprocket, a chain is transmission-connected to the outer wall of the sprocket, one end of the chain passes through the interior of the gearbox, the bottom of the gearbox is fixedly connected to the top of the fixed frame, a winding drum is rotationally connected to the front side of the gearbox, a rope is provided on the outer wall of the winding drum, the outer wall of the winding drum is transmission-connected to the outer wall of the drum through the rope, the inner wall of the fixed frame is hinged to the outer wall of the hinged pull plate, the front side of the hinged pull plate is rotationally connected to the inner wall of the drum through a rotating shaft, and an automatically adjustable load-bearing stabilization mechanism is provided inside the fixed frame.

[0005] The automatic adjustment load-bearing stabilization mechanism includes an elastic rope, a fixed rod, a toggle plate, a sealing plate, a push rod, and a weight block, one end of the elastic rope is fixedly connected to the top of the fixed frame, the other end of the elastic rope is fixedly connected to the outer wall of the hinged pull plate, the front of the hinged pull plate is fixedly connected with a fixed rod, the outer wall of the fixed rod is fixedly connected to one end of the toggle plate, a circular cavity is opened inside the fixed frame, the other end of the toggle plate is slidably connected to the inner wall of the circular cavity, the outer wall of the fixed rod is slidably connected to one end of the sealing plate, the other end of the sealing plate is fixedly connected to the inner wall of the circular cavity, a push groove is opened inside the fixed frame, the interior of the circular cavity is connected to the interior of the push groove, the outer wall of the push rod is slidably connected to the inner wall of the push groove, one end of the push rod is fixedly connected to one side of the weight block, the outer wall of the weight block is slidably connected to the inner wall of the fixed frame, and an anti-rollover stabilization mechanism is arranged inside the fixed frame.

[0006] Preferably, the anti-rollover stabilization mechanism includes a connecting groove, a fine air groove, an extrusion cavity, a small elastic rope, and a sliding support block. The connecting groove is arranged inside the fixed frame and the supporting leg, the fine air groove is arranged inside the fixed frame, the fine air groove is communicated with the inner wall of the fixed frame, the inner wall of the fixed frame is communicated with the inside of the extrusion cavity through the connecting groove, the extrusion cavity is arranged inside the supporting leg and the fixed frame, one end of the small elastic rope is fixedly connected to one side of the inner wall of the extrusion cavity, the other end of the small elastic rope is fixedly connected to one side of the sliding support block, the outer wall of the sliding support block is slidably connected to the inner wall of the extrusion cavity, and a stable friction grip mechanism is arranged inside the sliding support block.

[0007] Preferably, the stable friction grip mechanism includes a hinged plate, an elastic plate, a rubber block, and a rubber strip, one end of the hinged plate is hinged to the inner wall of the sliding support block, the outer wall of the hinged plate is fixedly connected to one end of the elastic plate, the other end of the elastic plate is fixedly connected to the inner wall of the sliding support block, the outer wall of the hinged plate contacts the inner wall of the sliding support block, the other end of the sliding support block is fixedly connected to the outer wall of the rubber block, and the outer wall of the rubber block is fixedly connected to one end of the rubber strip.

[0008] Preferably, a cavity is formed inside the rubber block and the rubber strip.

[0009] Preferably, the diameter of the connecting groove is five times the diameter of the fine air groove.

[0010] Preferably, a support frame is fixedly connected to the top of the support leg, and an outer wall of the support frame is fixedly connected to one side of the fixed frame.

[0011] Preferably, a hook is fixedly connected to one end of the winding drum.

[0012] The present invention provides a lifting device with adjustable load-bearing capacity, which has the following beneficial effects:

[0013] (1) This kind of lifting device with adjustable load-bearing capacity is provided with an automatic load-bearing stabilization mechanism, so that when different weights are pressed down, the weight blocks are placed at different positions inside the fixed frame, thereby maintaining the overall balance of the fixed frame and the supporting legs, avoiding the fixed frame and the supporting legs from tilting and tipping when the rope is lifted by overloaded goods, and then automatically adjusting its own load-bearing capacity according to the goods, thereby greatly improving stability.

[0014] (2) This kind of lifting device with adjustable load-bearing capacity is provided with an automatic load-bearing stabilizing mechanism, so that when the goods are being lifted or loaded, the hinged pull plate is slightly pulled and rotated by the weight of the goods, so as to avoid the situation that the hinged pull plate and the fixed frame are damaged by the heavy weight impact when the motor is started instantly to lift the heavy goods, and the whole is protected from shock, thereby avoiding the problem of reduced work efficiency due to damage.

[0015] (3) The adjustable load-bearing lifting device is provided with an anti-rollover stabilization mechanism, so that it can be used to lift heavy goods quickly without being noticed, and the supporting legs and the fixed frame will not be pulled over instantly, which greatly ensures its safety and stability. In each state, corresponding stabilization measures can be effectively taken according to the different load-bearing conditions, further improving its stability.

[0016] (4) This kind of lifting device with adjustable load-bearing capacity is provided with a stable friction gripping mechanism, so that the friction between the rubber block and the surface of the rubber strip and the internal cavity thereof causes the rubber block to deform, thereby further making the hinged plate fit more closely to the ground, ensuring sufficient gripping force to prevent the device from slipping, and avoiding sliding and overturning to a great extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 It is a front cross-sectional view of the present invention;

[0019] Figure 3 This is a front view of the automatic load-bearing stabilization mechanism of the present invention;

[0020] Figure 4 For the present invention Figure 3 A magnified image of point A;

[0021] Figure 5 This is a front view of the anti-rollover stabilization mechanism of the present invention;

[0022] Figure 6 For the present invention Figure 5 Enlarged view of point B.

[0023] In the figure: 1 supporting leg, 2 fixing frame, 3 automatically adjusting load-bearing stabilizing mechanism, 301 elastic rope, 302 fixing rod, 303 toggle plate, 304 sealing plate, 305 push rod, 306 weight block, 4 anti-rollover stabilizing mechanism, 401 connecting groove, 402 fine air groove, 403 extrusion cavity, 404 small elastic rope, 405 sliding support block, 5 stable friction gripping mechanism, 501 hinged plate, 502 elastic plate, 503 rubber block, 504 rubber strip, 6 motor, 7 sprocket, 8 gearbox, 9 winding drum, 10 hinged pull plate, 11 roller. DETAILED DESCRIPTION

[0024] See also Figure 1-6 The present invention provides a technical solution: a lifting device with adjustable load-bearing capacity, comprising a fixed frame 2, a supporting leg 1 is fixedly connected to the outer wall of the bottom of the fixed frame 2, a supporting frame is fixedly connected to the top of the supporting leg 1, an outer wall of the supporting frame is fixedly connected to one side of the fixed frame 2, a motor 6 is fixedly connected to the top of the fixed frame 2, a sprocket 7 is fixedly connected to the front of the motor 6 through a coupling, a gearbox 8 is arranged on the right side of the sprocket 7, a chain is transmission-connected to the outer wall of the sprocket 7, one end of the chain passes through the inside of the gearbox 8, the bottom of the gearbox 8 is fixedly connected to the top of the fixed frame 2, a winding drum 9 is rotationally connected to the front of the gearbox 8, a hook is fixedly connected to one end of the winding drum 9, a rope is arranged on the outer wall of the winding drum 9, the outer wall of the winding drum 9 is transmission-connected to the outer wall of the drum 11 through the rope, the inner wall of the fixed frame 2 is hinged to the outer wall of the hinged pull plate 10, the front of the hinged pull plate 10 is rotationally connected to the inner wall of the drum 11 through a rotating shaft, and an automatic adjustment load-bearing stabilization mechanism 3 is arranged inside the fixed frame 2.

[0025] The automatic load-bearing stabilizing mechanism 3 includes an elastic rope 301, a fixed rod 302, a toggle plate 303, a sealing plate 304, a push rod 305, and a weight block 306. One end of the elastic rope 301 is fixedly connected to the top of the fixed frame 2, and the other end of the elastic rope 301 is fixedly connected to the outer wall of the hinged pull plate 10. The front of the hinged pull plate 10 is fixedly connected with the fixed rod 302. The outer wall of the fixed rod 302 is fixedly connected to one end of the toggle plate 303. A circular cavity is opened inside the fixed frame 2. The toggle plate 303 The other end is slidably connected to the inner wall of the circular cavity, the outer wall of the fixing rod 302 is slidably connected to one end of the sealing plate 304, the other end of the sealing plate 304 is fixedly connected to the inner wall of the circular cavity, a push groove is provided inside the fixing frame 2, the inside of the circular cavity is connected to the inside of the push groove, the outer wall of the push rod 305 is slidably connected to the inner wall of the push groove, one end of the push rod 305 is fixedly connected to one side of the weight block 306, the outer wall of the weight block 306 is slidably connected to the inner wall of the fixing frame 2, and an anti-rollover stabilization mechanism 4 is provided inside the fixing frame 2.

[0026] The anti-rollover stabilizing mechanism 4 includes a connecting groove 401, the diameter of the connecting groove 401 is five times the diameter of the fine air groove 402, the fine air groove 402, the extrusion cavity 403, a small elastic rope 404, and a sliding support block 405. The connecting groove 401 is arranged inside the fixed frame 2 and the supporting leg 1, the fine air groove 402 is arranged inside the fixed frame 2, the fine air groove 402 is connected with the inner wall of the fixed frame 2, the inner wall of the fixed frame 2 is connected with the inside of the extrusion cavity 403 through the connecting groove 401, the extrusion cavity 403 is arranged inside the supporting leg 1 and the fixed frame 2, one end of the small elastic rope 404 is fixedly connected to one side of the inner wall of the extrusion cavity 403, the other end of the small elastic rope 404 is fixedly connected to one side of the sliding support block 405, the outer wall of the sliding support block 405 is slidably connected with the inner wall of the extrusion cavity 403, and a stable friction gripping mechanism 5 is arranged inside the sliding support block 405.

[0027] The stable friction grip mechanism 5 includes a hinged plate 501, an elastic plate 502, and a rubber block 503. The rubber block 503 and the rubber strip 504 have cavities inside. The rubber strip 504 and one end of the hinged plate 501 are hinged to the inner wall of the sliding support block 405. The outer wall of the hinged plate 501 is fixedly connected to one end of the elastic plate 502. The other end of the elastic plate 502 is fixedly connected to the inner wall of the sliding support block 405. The outer wall of the hinged plate 501 contacts the inner wall of the sliding support block 405. The other end of the sliding support block 405 is fixedly connected to the outer wall of the rubber block 503. The outer wall of the rubber block 503 is fixedly connected to one end of the rubber strip 504.

[0028] When in use, the sprocket 7 is driven to rotate by starting the motor 6, and the sprocket 7 is transmitted to the inside of the gearbox 8 through the chain for speed change, and then slowly transmitted to the winding drum 9, driving the winding drum 9 to rotate, and the winding drum 9 drives the drum 11 to rotate through the rope, so that after the hook at one end of the rope hooks the goods, the rope can be driven to rotate through the winding drum 9 to be tightened, and the other end of the rope is raised to lift the goods. At the same time, when the hook is loaded with too much weight and pulled up, before the supporting leg 1 becomes unbalanced, the articulated pull plate 10 will be pulled by the relative downward force to rotate and descend on the inner wall of the fixed frame 2, so that the elastic rope 301 is tightened, and the articulated pull plate 10 is limited. At the same time, the fixed rod 302 on the front of the articulated pull plate 10 drives the toggle plate 303 to rotate in a circle The inner wall of the shaped cavity is selected, and the air in the space on one side where the toggle plate 303 and the sealing plate 304 are close to each other is sealed and squeezed, and the air pushes the push rod 305 through the push groove, and the push rod 305 simultaneously pushes the weight block 306, so that when the winding drum 9 is lifted, when it is subjected to a large weight that will cause the fixed frame 2 and the supporting leg 1 to tilt, the elastic rope 301 is pulled first, so that the hinged pull plate 10 is gradually pressed down, and the weight block 306 on the inner wall of the fixed frame 2 is gradually pushed to the left, so that when lifting is performed under different weights, the weight block 306 is at different positions inside the fixed frame 2, thereby maintaining the overall balance of the fixed frame 2 and the supporting leg 1, and avoiding the fixed frame 2 and the supporting leg 1 from tipping over. At the same time, when the rope is held When the heavy cargo is continuously loaded, the weight block 306 slides and continuously pushes the air on the inner wall of the fixed frame 2 to be discharged from the fine air groove 402. If the rope is loaded with an extremely heavy weight and is lifted quickly, the rope on the outer wall of the winding drum 9 is quickly recovered by the winding drum 9, so that the hinged pull plate 10 is quickly pulled down and pressed, and the toggle plate 303 on the outer wall of the fixed rod 302 is quickly rotated to quickly push out the push rod 305, and the weight block 306 is simultaneously quickly pushed out, and the air inside the fixed frame 2 is instantly squeezed and cannot be discharged through the fine air groove 402 in an instant, so it is discharged through the connecting groove 401 which is 5 times larger than the fine air groove 402. Under normal deceleration, it is impossible to enter the connecting groove 401 because the space inside the extrusion cavity 403 is occupied by the sliding support block 4 05 and the extrusion chamber 403 pull the seal, so that in this case, it will quickly enter the connecting groove 401, and then enter the fine air groove 402 to push the sliding support block 405. The huge thrust pushes the sliding support block 405 to deform the small elastic rope 404, and the sliding support block 405 is pushed out instantly, so that when the fixed frame 2 rolls over, the sliding support block 405 is quickly ejected, thereby expanding the support area and shifting the center of gravity laterally, ensuring that the fixed frame 2 and the support leg 1 will not roll over instantly. The staff then stops the lifting work of the motor 6. At the same time, when the sliding support block 405 is quickly pushed out, the rubber block 503 and the rubber strip 504 inside the sliding support block 405 quickly detach from the inner wall of the extrusion chamber 403 at the bottom,Therefore, the rebound force of the elastic plate 502 on the top of the hinged plate 501 quickly rebounds and drives the rubber block 503 and the rubber strip 504 to quickly and closely contact the ground, and the friction force on the surface of the rubber block 503 and the rubber strip 504 and their internal cavities cause them to deform and fit more closely to the ground, ensuring sufficient grip and further avoiding sliding and rolling.

[0029] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lifting device with adjustable load-bearing capacity, comprising a fixed frame (2), characterized in that: The bottom outer wall of the fixed frame (2) is fixedly connected to a support leg (1); the top of the fixed frame (2) is fixedly connected to a motor (6); the front of the motor (6) is fixedly connected to a sprocket (7) via a coupling; a gearbox (8) is provided on the right side of the sprocket (7); the outer wall of the sprocket (7) is transmission-connected to a chain; one end of the chain passes through the inside of the gearbox (8); the bottom of the gearbox (8) is fixedly connected to the top of the fixed frame (2); the front of the gearbox (8) is rotationally connected to a winding drum (9); the outer wall of the winding drum (9) is provided with a rope; the outer wall of the winding drum (9) is transmission-connected to the outer wall of a drum (11) via the rope; the inner wall of the fixed frame (2) is hinged to the outer wall of a hinged pull plate (10); the front of the hinged pull plate (10) is rotationally connected to the inner wall of the drum (11) via a rotating shaft; and an automatically adjustable load-bearing stabilization mechanism (3) is provided inside the fixed frame (2); The automatic adjustment load-bearing stabilization mechanism (3) comprises an elastic rope (301), a fixing rod (302), a toggle plate (303), a sealing plate (304), a push rod (305), and a weight (306); one end of the elastic rope (301) is fixedly connected to the top of the fixing frame (2); the other end of the elastic rope (301) is fixedly connected to the outer wall of the hinged pull plate (10); the front of the hinged pull plate (10) is fixedly connected to the fixing rod (302); the outer wall of the fixing rod (302) is fixedly connected to one end of the toggle plate (303); a circular cavity is provided inside the fixing frame (2); the toggle plate (304) is fixedly connected to the outer wall of the hinged pull plate (10); The other end of the plate (303) is slidably connected to the inner wall of the circular cavity, the outer wall of the fixing rod (302) is slidably connected to one end of the sealing plate (304), the other end of the sealing plate (304) is fixedly connected to the inner wall of the circular cavity, a push groove is provided inside the fixing frame (2), the inside of the circular cavity is connected to the inside of the push groove, the outer wall of the push rod (305) is slidably connected to the inner wall of the push groove, one end of the push rod (305) is fixedly connected to one side of the weight block (306), the outer wall of the weight block (306) is slidably connected to the inner wall of the fixing frame (2), and an anti-rollover stabilization mechanism (4) is provided inside the fixing frame (2); The anti-rollover stabilizing mechanism (4) comprises a connecting groove (401), a fine air groove (402), an extrusion cavity (403), a small elastic rope (404), and a sliding support block (405); the connecting groove (401) is provided inside the fixing frame (2) and the supporting leg (1); the fine air groove (402) is provided inside the fixing frame (2); the fine air groove (402) is connected to the inner wall of the fixing frame (2); the inner wall of the fixing frame (2) and the inside of the extrusion cavity (403) are connected via a connecting groove (401). The through groove (401) is connected, the extrusion cavity (403) is provided inside the support leg (1) and the fixed frame (2), one end of the small elastic rope (404) is fixedly connected to one side of the inner wall of the extrusion cavity (403), the other end of the small elastic rope (404) is fixedly connected to one side of the sliding support block (405), the outer wall of the sliding support block (405) is slidably connected to the inner wall of the extrusion cavity (403), and a stable friction gripping mechanism (5) is provided inside the sliding support block (405); The stable friction gripping mechanism (5) comprises a hinged plate (501), an elastic plate (502), a rubber block (503), and a rubber strip (504); one end of the hinged plate (501) is hinged to the inner wall of the sliding support block (405); the outer wall of the hinged plate (501) is fixedly connected to one end of the elastic plate (502); the other end of the elastic plate (502) is fixedly connected to the inner wall of the sliding support block (405); the outer wall of the hinged plate (501) contacts the inner wall of the sliding support block (405); the other end of the sliding support block (405) is fixedly connected to the outer wall of the rubber block (503); and the outer wall of the rubber block (503) is fixedly connected to one end of the rubber strip (504); The rubber block (503) and the rubber strip (504) have cavities formed inside. The diameter of the connecting groove (401) is five times the diameter of the fine air groove (402).

2. The lifting device with adjustable load-bearing capacity according to claim 1, characterized in that: The top of the support leg (1) is fixedly connected to a support frame, and the outer wall of the support frame is fixedly connected to one side of the fixed frame (2).

3. The lifting device with adjustable load-bearing capacity according to claim 2, characterized in that: One end of the winding drum (9) is fixedly connected with a hook.

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