Freight elevator capable of increasing lifting height

Abstract

The utility model discloses a freight elevator capable of increasing the lifting height, which relates to the technical field of elevators, and comprises a rack and a lifting table arranged in the rack, a material rack is arranged above the lifting table, connecting seats are fixedly arranged at four corners of the lifting table, and a plurality of damping telescopic rods are fixedly arranged between the lifting table and the material rack. Through the arrangement of the rack, the lifting table, the material frame, the movable frame and the transmission arm, the lifting table and the material frame can move up and down in the rack to complete lifting of goods, when the lifting table and the material frame move to the top end of the rack, the movable frame is limited by the rack to limit the lifting table to continue to ascend, and the situation that the lifting table rushes to the top to cause damage to the device is avoided; the movable frame extrudes the material frame through the transmission arm while being limited by the machine frame, so that the material frame is lifted upwards, and therefore goods continue to be lifted when being lifted to the top end, and the goods can be conveniently carried and transferred through a forklift or an AGV robot.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hoist, especially increase the freight hoist of lifting height. BACKGROUND

[0002] With the development of science and technology, the application of hoist is more and more extensive. Usually, the hoist is applied in the warehouse system, and the cross-layer transportation of goods can be realized through the hoist, and the goods can be lifted through the hoist, which not only avoids the use of manpower to lift the goods, but also solves the limitation of single-layer transportation of the shuttle vehicle. Especially for bulk goods, the use of hoist can improve the transfer efficiency of goods.

[0003] The existing freight hoist for warehouse has some problems in use, the existing freight hoist adopts the lifting platform that can be lifted in the rack to realize the lifting of materials, the lifting platform is driven by sprocket and chain, when the lifting platform moves to the top of the rack, the lifting platform has the problem of excessive lifting and collision with the sprocket, in the prior art, a limiting component is installed on the lifting platform to limit the lifting height to avoid collision with the sprocket, however, the setting of the limiting component limits the lifting height of the lifting platform, when the lifting platform lifts the goods to the top layer, the lifting platform and the goods are limited by the limiting component and cannot continue to move upward, at this time, the goods, the lifting platform and the warehouse platform are in the same horizontal plane, the goods in this state are not convenient to carry and transfer by the forklift or AGV warehouse robot, the prior art prolongs the height of the rack to ensure that the lifting platform and the goods can move upward after being lifted to the uppermost layer to facilitate carrying and transferring, however, the height of the rack is limited by the height of the warehouse space, and it is difficult to realize, therefore, how to increase the lifting height of the goods while avoiding the collision of the lifting platform is particularly important.

[0004] Therefore, it is necessary to provide a freight hoist with increased lifting height to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a freight hoist with increased lifting height to solve the problems in the background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: A freight hoist of increasing lifting height, including frame and the lifting platform of installing in the inside of frame, the top of lifting platform is equipped with the rack, the four corners of lifting platform all are equipped with the connecting seat fixedly, a plurality of damping telescopic links are fixedly equipped between lifting platform and rack, the outside wall four corners of lifting platform all are equipped with fixed sleeve fixedly, both sides of lifting platform all are equipped with movable frame, and movable frame can slide the inside of fixed sleeve, the bottom of movable frame is equipped with the insertion hole, and the insertion hole can slide the plug rod in, both ends of plug rod all are equipped with the limit board fixedly, two limit boards are located both sides of movable frame respectively, and all are equipped with buffer spring between two limit boards and movable frame, the bottom of plug rod is equipped with transmission rod fixedly, the inside of lifting platform is equipped with support rod rotatably, the middle part of support rod is equipped with transmission arm fixedly, the bottom of transmission arm is equipped with strip slot, transmission arm can slide the inside of strip slot, the top of transmission arm is equipped with slide rod fixedly, the lower surface of rack is equipped with fixed frame fixedly, slide rod can slide the inside of fixed frame.

[0007] Preferably, the transmission arm, support rod, slide rod and fixed frame are provided with two groups, and the two groups of transmission arm, support rod, slide rod and fixed frame are symmetrically arranged.

[0008] Preferably, the top of the movable frame is fixedly provided with an extension plate, a threaded groove is formed in the middle of the extension plate, a threaded adjusting screw is screwed into the threaded groove, the top of the adjusting screw is fixedly provided with a top plate, and the top plate is slidably arranged in the inside of the frame.

[0009] Preferably, two slide holes are formed in the upper surface of the extension plate, and a guide rod is slidably arranged in each of the two slide holes.

[0010] Preferably, a rotating shaft is rotatably arranged at each end of the frame, a sprocket is fixedly arranged at each end of the rotating shaft, a chain is arranged between the two sprockets vertically opposite to each other, and the connecting seat is fixedly arranged on the outside of the chain.

[0011] Preferably, a lifting motor is fixedly arranged at the top of the frame, and a transmission chain is arranged between the output shaft of the lifting motor and the rotating shaft.

[0012] The utility model discloses the technical effect and advantage:

[0013] 1. The utility model discloses a lifting platform and material frame can move up and down in the rack to complete the lifting of goods, when the lifting platform and material frame move to the top end of the rack, the movable frame is limited by the rack to limit the lifting platform to continue to rise, avoid the lifting platform to hit the top and cause the device to be damaged, and the movable frame is limited by the rack at the same time through the transmission arm extruding the material frame, so that the material frame is lifted upwards, so that the goods are lifted to the top, and the goods are carried and shifted by the forklift or AGV robot.

[0014] 2. The utility model discloses a movable frame, adjusting screw and top plate are set up, the movable frame is in the process of following the lifting platform upward motion, adjusting screw and top plate can be contacted with the top of rack to reach the effect of limiting movable frame to continue to rise, and the distance between top plate and movable frame can be adjusted through the rotation of adjusting screw, so that the position of movable frame and lifting platform can be adjusted to the highest point and be limited, when the goods of larger size are lifted, the maximum lifting height of lifting platform is reduced through the adjustment of top plate position, so that the goods can be avoided and the rack top collides and is damaged. DRAWINGS

[0015] Figure 1 It is the whole structure schematic diagram of the utility model.

[0016] Figure 2 It is the lifting platform and material frame structure schematic diagram of the utility model.

[0017] Figure 3 It is the lifting platform and material frame structure front view schematic diagram of the utility model.

[0018] Figure 4 It is the lifting platform structure side surface schematic diagram of the utility model.

[0019] In the drawing: 1, rack;2, lifting platform;3, material frame;4, connecting seat;5, damping telescopic rod;6, fixed sleeve;7, movable frame;8, plug-in rod;9, limiting plate;10, buffer spring;11, transmission arm;12, support rod;13, sliding rod;14, fixed frame;15, extension plate;16, adjusting screw;17, top plate;18, guide rod;19, rotating shaft;20, chain wheel;21, chain;22, lifting motor;23, transmission rod;24, strip slot. DETAILED DESCRIPTION

[0020] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0021] The utility model provides a kind of freight hoist for increasing lifting height as shown in Figures 1-4 It is equipped with the connecting seat 4 in the four corners of the lifting platform 2, and the damping telescopic rod 5 is fixed between the lifting platform 2 and the rack 3, the fixed sleeve 6 is fixed in the four corners of the outer side wall of the lifting platform 2, the movable frame 7 is arranged on both sides of the lifting platform 2, and the movable frame 7 is slidably arranged in the fixed sleeve 6, the plug hole is arranged in the bottom end of the movable frame 7, and the plug rod 8 is slidably arranged in the plug hole, the limiting plate 9 is fixed in both ends of the plug rod 8, the two limiting plates 9 are respectively arranged on both sides of the movable frame 7, and the buffer spring 10 is arranged between the two limiting plates 9 and the movable frame 7, when the lifting platform 2 moves to the top end of the rack 1, the movable frame 7 moves downward under the reaction force of the rack 1, at this time, the buffer spring 10 and the damping telescopic rod 5 form an energy-absorbing shock-absorbing structure to reduce the impact of the impact force on the material above the rack 3 when the lifting platform 2 is limited;

[0022] The transmission rod 23 is fixed in the bottom end of the plug rod 8, the support rod 12 is rotatably arranged in the lifting platform 2, the transmission arm 11 is fixed in the middle part of the support rod 12, the strip-shaped groove 24 is arranged in the bottom end of the transmission arm 11, the transmission rod 23 is slidably arranged in the strip-shaped groove 24, the slide rod 13 is fixed in the top end of the transmission arm 11, the fixed frame 14 is fixed in the lower surface of the rack 3, the slide rod 13 is slidably arranged in the fixed frame 14, the transmission rod 23 can slide in the strip-shaped groove 24, and the slide rod 13 can slide in the fixed frame 14, and the slidable design makes the rotation of the transmission arm 11 around the support rod 12 not be interfered by the vertical upward and downward movement of the plug rod 8.

[0023] The transmission arm 11, the support rod 12, the slide rod 13 and the fixed frame 14 are arranged in two groups, and the two groups of transmission arm 11, support rod 12, slide rod 13 and fixed frame 14 are symmetrically arranged, the transmission arm 11 can rotate around the support rod 12, and the slide rod 13 can press the fixed frame 14 to make the rack 3 lift, when the device does not move to the top of the rack 1, the rack 3 is close to the lifting platform 2 under the action of gravity, and at this time, the damping telescopic rod 5 is in a fully contracted state.

[0024] The top end of the movable frame 7 is fixedly provided with an extension plate 15, a threaded groove is formed in the middle portion of the extension plate 15, an adjusting screw 16 is screwed in the threaded groove, the top end of the adjusting screw 16 is fixedly provided with a top plate 17, the top plate 17 is slidably arranged in the machine frame 1, two sliding holes are formed in the upper surface of the extension plate 15, and two guide rods 18 are slidably arranged in the two sliding holes, the two guide rods 18 are fixedly arranged on the lower surface of the top plate 17, and the guide rods 18 and the sliding holes are used for limiting the top plate 17 from rotating with the adjusting screw 16;

[0025] Both ends of the machine frame 1 are rotatably provided with rotating shafts 19, chain wheels 20 are fixedly arranged at both ends of the rotating shafts 19, a chain 21 is arranged between the two chain wheels 20 which are vertically opposite to each other, the connecting seat 4 is fixedly arranged on the outer side of the chain 21, the top end of the machine frame 1 is fixedly provided with a lifting motor 22, a transmission chain is arranged between the output shaft of the lifting motor 22 and the rotating shaft 19, the lifting motor 22 drives the rotating shaft 19 to rotate through the transmission chain, so as to provide power input for the chain wheels 20 and the chain 21, and it needs to be noted that the output shaft of the lifting motor 22 is provided with a matched worm gear transmission box, which can realize locking after the lifting platform 2 moves.

[0026] The working principle of the utility model:

[0027] When the device is used, the machine frame 1 is installed in the warehouse, the lifting motor 22 drives the two rotating shafts 19 to rotate through the transmission chain, the two rotating shafts 19 drive the two groups of chain wheels 20 and the chain 21 to move respectively, the chain 21 drives the lifting platform 2 to move up and down through the connecting seat 4, the lifting platform 2 drives the material frame 3 to move up and down, the goods are placed above the material frame 3, and the lifting of the goods is completed;

[0028] When the lifting platform 2 and the material frame 3 move to the top end of the machine frame 1, the top plate 17 above the movable frame 7 is attached to the inner wall of the top end of the machine frame 1, at this time, the top plate 17 and the movable frame 7 are subjected to the reaction force of the machine frame 1, at this time, the movable frame 7 moves downward relative to the fixed sleeve 6, and the movable frame 7 moves relative to the insertion rod 8, until the limiting plate 9 at the top end of the insertion rod 8 is attached to the movable frame 7, then the insertion rod 8 drives the transmission arm 11 to rotate around the supporting rod 12 by extruding the strip-shaped groove 24 through the transmission rod 23, the transmission arm 11 extrudes the fixed frame 14 through the slide rod 13 at the top end thereof during the rotating process, so that the material frame 3 moves upward, so that the material frame 3 lifts the goods again, in this process, the lifting platform 2 is stopped from rising by the limiting of the top plate 17 and the movable frame 7, so as to avoid the impact of the chain wheels 20 and cause damage to the device;

[0029] When the goods with large size are lifted, the position between the top plate 17 and the movable frame 7 is adjusted by rotating the adjusting screw 16, so that the maximum lifting height of the lifting platform 2 can be reduced by adjusting the position of the top plate 17, so as to avoid the collision and damage of the goods with the top of the machine frame 1.

[0030] It should be pointed out finally that: the above only for the preferred embodiments of the utility model have, and do not for limiting the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. that is made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A freight hoist with increased lifting height, comprising a frame (1) and a lifting platform (2) installed inside the frame (1), characterized in that: A material rack (3) is provided above the lifting platform (2). Connecting seats (4) are fixed at the four corners of the lifting platform (2). Multiple damping telescopic rods (5) are fixed between the lifting platform (2) and the material rack (3). Fixed sleeves (6) are fixed at the four corners of the outer wall of the lifting platform (2). Movable frames (7) are provided on both sides of the lifting platform (2), and the movable frames (7) are slidably disposed inside the fixed sleeves (6). An insertion hole is opened at the bottom of the movable frame (7), and an insertion rod (8) is slidably disposed in the insertion hole. Limiting plates (9) are fixed at both ends of the insertion rod (8). The two limiting plates (9) are respectively located on the movable frame (7). On both sides, and between the two limiting plates (9) and the movable frame (7), buffer springs (10) are provided. The bottom end of the insertion rod (8) is fixedly provided with a transmission rod (23). The inside of the lifting platform (2) is rotatably provided with a support rod (12). The middle part of the support rod (12) is fixedly provided with a transmission arm (11). The bottom end of the transmission arm (11) is provided with a strip groove (24). The transmission rod (23) is slidably provided in the strip groove (24). The top end of the transmission arm (11) is fixedly provided with a sliding rod (13). The lower surface of the material rack (3) is fixedly provided with a fixed frame (14). The sliding rod (13) is slidably provided inside the fixed frame (14).

2. A freight hoist with increased lifting height according to claim 1, characterized in that: The transmission arm (11), support rod (12), slide rod (13) and fixed frame (14) are each provided in two sets, and the two sets of transmission arms (11), support rod (12), slide rod (13) and fixed frame (14) are arranged symmetrically.

3. A freight hoist with increased lifting height according to claim 1, characterized in that: The top of the movable frame (7) is fixedly provided with an extension plate (15), the middle of the extension plate (15) is provided with a threaded groove, and the threaded groove is provided with an adjusting screw (16). The top of the adjusting screw (16) is fixedly provided with a top plate (17), and the top plate (17) is slidably provided inside the frame (1).

4. A freight hoist with increased lifting height according to claim 3, characterized in that: The upper surface of the extension plate (15) is provided with two sliding holes, and guide rods (18) are slidably provided in both sliding holes. Both guide rods (18) are fixedly provided on the lower surface of the top plate (17).

5. A freight hoist with increased lifting height according to claim 1, characterized in that: The frame (1) is provided with a rotating shaft (19) at both ends, and a sprocket (20) is fixedly provided at both ends of the rotating shaft (19). A chain (21) is provided between two vertically corresponding sprockets (20), and the connecting seat (4) is fixedly provided on the outside of the chain (21).

6. A freight hoist with increased lifting height according to claim 5, characterized in that: A lifting motor (22) is fixedly provided at the top of the frame (1), and a transmission chain is provided between the output shaft of the lifting motor (22) and the rotating shaft (19).

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