Lifting device

Abstract

The invention relates to the technical field of transportation, in particular to a hoisting device. The device comprises a supporting frame, a lift car, an electric hoist and a hoisting mechanism. Wherein the supporting frame is slidably arranged in the supporting frame and used for bearing goods; the lifting mechanism is arranged on the top of the supporting frame and used for driving the lift car to slide in the supporting frame in the vertical direction. The electric hoist is arranged on the top of the supporting frame and used for hoisting goods. The lifting device provided by the invention can realize goods loading and unloading and vertical lifting functions, goods can be conveyed to a formulated floor of a construction plant, and the cost of crane renting, manual lifting and material receiving platform erection is saved; according to the device, manual carrying can be reduced, the problems of improper crane selection, unreasonable standing, outward pulling, inclined dragging and the like are avoided, and the hoisting transportation safety risk is greatly reduced; in addition, the device further has the advantages of being simple in structure, convenient to operate, safe, reliable and the like, can be assembled on site and reused, and has the value of innovation, efficiency improvement, popularization and application.

Description

Technical Field

[0001] The invention relates to the technical field of transportation, in particular to a lifting device. Background Art

[0002] In construction projects, the number and types of items to be installed in multi-story factories are very large; the existing methods of transporting items are mainly manual handling, mobile cranes and temporary lifting points; the existing transportation methods require complex item lifting paths to be set up in the factory, and the construction difficulty, cost and safety risks of the items introduced are relatively large, resulting in low transportation efficiency, and the existing lifting paths and lifting equipment inside and outside the factory cannot fully meet all lifting needs; in addition, manpower is required to unload and transfer goods from trucks to transport vehicles during the transportation process, which requires a lot of labor. Summary of the invention

[0003] The purpose of the present invention is to provide a lifting device with low construction difficulty, low cost, high safety and high construction efficiency.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A lifting device, comprising:

[0006] Support frame;

[0007] A car, slidably disposed in the support frame, for carrying goods;

[0008] A lifting mechanism, mounted on the top of the support frame, for driving the car to slide vertically within the support frame;

[0009] The electric hoist is installed on the top of the supporting frame and is used for hanging and placing goods.

[0010] Furthermore, the number of the lifting mechanisms is two, including a drum, a driving assembly for driving the drum to rotate, and a traction rope wound around the drum;

[0011] A group of balancing pulley groups are respectively arranged on the opposite sides of the car, and the two groups of balancing pulley groups are arranged corresponding to the two lifting mechanisms; the balancing pulley group includes an upper wheel group installed on the top of the supporting frame and a lower wheel group installed on the car, and the upper wheel group is connected to the lower wheel group through the traction rope.

[0012] Further, each of the driving components includes a motor and a reducer connected to each other, and the reducer is connected to the reel;

[0013] The reducers in the two lifting mechanisms are connected via a synchronous shaft.

[0014] Furthermore, the upper wheel group includes N upper pulleys, and N is an even number greater than or equal to 2; the lower wheel group includes multiple lower pulleys, and the number of the lower pulleys is one more than the number of the upper pulleys; the upper wheel group and the lower wheel group are symmetrically designed, and the traction rope is alternately wrapped around the lower pulley and the upper pulley.

[0015] Furthermore, two ends of the traction rope are wound corresponding to two ends of the drum, and the winding directions of the two ends of the traction rope are the same; the middle part of the traction rope is wound around the balancing pulley group.

[0016] Furthermore, one or more of the upper pulleys are provided with a load limiting sensor, and the load limiting sensor is linked to the lifting mechanism.

[0017] Further, a plurality of first guide wheel groups are arranged on the outer side wall of the car, and each first guide wheel group includes two first guide wheels; a vertical guide rail is arranged on the support frame, and the vertical guide rail is sandwiched between two first guide wheels in a group of the first guide wheel groups;

[0018] A second guide wheel is arranged on the outer side wall of the car, and the second guide wheel is tangent to the inner side wall of the support frame.

[0019] Furthermore, a locking latch and a driving member for driving the locking latch to extend and retract are provided at the bottom of the car, and a plurality of holes for inserting the locking latch are provided in the vertical direction on the support frame.

[0020] Further, the support frame includes a bracket and a top mounting seat and a loading platform detachably mounted on the bracket;

[0021] The top mounting seat is mounted on the top of the bracket, the lifting mechanism and the electric hoist are mounted on the top mounting seat, the car can slide in the bracket, and the unloading platform is arranged around the bracket.

[0022] Furthermore, a shelter shed is installed on the top of the support frame, and the lifting mechanism is arranged below the shelter shed.

[0023] Beneficial effects of the present invention:

[0024] The present invention provides a lifting device, which includes a support frame, a car, an electric hoist and a lifting mechanism; wherein the sliding device is arranged in the support frame for carrying goods; the lifting mechanism is installed on the top of the support frame for driving the car to slide in the support frame in the vertical direction; the electric hoist is installed on the top of the support frame for lifting goods. This device can realize the functions of loading and unloading items and vertical lifting, which saves crane rental, lifting labor and material receiving platform construction compared with conventional lifting; the device is highly practical, can reduce manual handling, avoid problems such as improper crane selection, unreasonable position, external pulling and oblique dragging, and greatly reduces the safety risks of lifting and transportation; in addition, the device also has the advantages of simple structure, easy operation, safety and reliability, can be assembled on site and reused, and has the value of innovation, efficiency improvement and promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the three-dimensional structure of a lifting device provided in an embodiment of the present invention;

[0027] Figure 2 A schematic diagram of the installation structure of the lifting device and the factory building provided in the embodiment of the present invention;

[0028] Figure 3 A schematic diagram of the structure of a bracket provided in an embodiment of the present invention;

[0029] Figure 4 A schematic diagram of the structure of an unloading platform provided by an embodiment of the present invention;

[0030] Figure 5 A schematic diagram of the installation structure of the lifting mechanism, electric hoist and top mounting seat provided in an embodiment of the present invention;

[0031] Figure 6 A schematic diagram of the three-dimensional structure of the lifting mechanism and the top mounting seat provided in an embodiment of the present invention;

[0032] Figure 7 A schematic diagram of a three-dimensional structure of a car provided in an embodiment of the present invention;

[0033] Figure 8 A schematic diagram of the connection structure of a balancing pulley combined traction rope provided in an embodiment of the present invention;

[0034] Fig. 9A schematic diagram of the installation structure of the car and the support frame provided in an embodiment of the present invention;

[0035] Fig.10 for Fig. 9 A magnified view at point A;

[0036] Fig.11 for Fig. 9 Enlarged view at B.

[0037] icon:

[0038] 1-support frame; 11-bracket; 111-column; 1111-vertical guide rail; 112-crossbeam; 12-top mounting seat; 13-unloading platform; 131-enclosure; 132-lap board; 133-fence; 14-shed; 15-protective door;

[0039] 2-Car;

[0040] 3-lifting mechanism; 31-reel; 32-driving assembly; 321-motor; 322-reducer; 33-traction rope;

[0041] 4-Electric hoist;

[0042] 51-upper pulley; 52-lower pulley;

[0043] 6- Synchronous axis;

[0044] 71-first guide wheel; 72-second guide wheel;

[0045] 8-Locking pin;

[0046] 100-factory building. DETAILED DESCRIPTION

[0047] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0049] It should be noted that in the description of the present invention, the terms "connection" and "installation" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or connected through an intermediate medium; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] Reference Figure 1 and Figure 2 The present invention provides a lifting device, comprising:

[0051] Support frame 1;

[0052] The car 2 is slidably disposed in the support frame 1 and is used to carry goods;

[0053] The lifting mechanism 3 is installed on the top of the supporting frame 1 and is used to drive the car 2 to slide in the supporting frame 1 along the vertical direction;

[0054] The electric hoist 4 is installed on the top of the support frame 1 and is used for hanging goods.

[0055] When the above device is used, the device is assembled at the construction workshop 100, and the transportation process can be started. The transportation process of the device is as follows:

[0056] 1) Park the car 2 on the first floor of the plant 100, and then slowly pour the truck loaded with materials into the car 2;

[0057] 2) Use the electric hoist 4 to lift the cargo, and then drive the truck away from the car 2;

[0058] 3) Drive the transfer vehicle into the car 2, adjust the position and lower the material from the electric hoist 4 to the transfer vehicle;

[0059] 4) Start the lifting mechanism 3 to transport the car 2 to the designated floor. After the factory door of the floor is opened, the transfer vehicle carrying the goods leaves the car 2, and the lifting process is completed.

[0060] This device can realize the functions of loading and unloading objects and vertical lifting. It only takes 10 minutes from loading and unloading objects to vertically transporting objects to each floor. It has high transportation efficiency and saves crane rental, lifting labor and material receiving platform construction compared with conventional lifting. The device is highly practical and can reduce manual handling, avoid problems such as improper selection of cranes, unreasonable positioning, external pulling and slanting, and greatly reduces the safety risks of lifting and transportation. In addition, the device also has the advantages of simple structure, easy operation, safety and reliability. It can be assembled on site and reused, which plays a role in innovation, efficiency improvement and promotion and application.

[0061] Specifically, the support frame 1 includes a bracket 11 and a top mounting seat 12, an unloading platform 13 and a shelter 14 which are detachably mounted on the bracket 11; the top mounting seat 12 is mounted on the top of the bracket 11, and the lifting mechanism 3 and the electric hoist 4 are mounted on the top mounting seat 12; the car 2 can slide in the bracket 11; the unloading platform 13 is arranged around the bracket 11, and the staff can operate on the unloading platform 13. The number of unloading platforms 13 depends on the construction floors of the factory building 100, and the number is consistent with the number of floors of the factory building 100. The unloading platform 13 on each floor is connected to the outer wall of the corresponding floor; a shelter 14 is installed on the top of the support frame 1, and the lifting mechanism 3 is arranged under the shelter 14 to prevent the lifting mechanism 3 from being damaged by sunlight and rain.

[0062] Reference Figure 2 A protective door 15 is provided on each floor, and the protective door 15 is interlocked with the car 2. The protective door 15 on the designated floor can be opened only after the car 2 reaches the designated floor. The protective door 15 of the supporting frame 1 on the first floor is installed on the side of the supporting frame 1 away from the factory building 100, which is convenient for trucks to enter. The protective doors 15 on the other floors are installed on the side close to the factory building 100, which is convenient for transfer vehicles in the factory building 100 to enter.

[0063] Reference Figure 3 and Figure 4 The support 11 is formed by lap jointing of columns 111 and beams 112 by welding or screwing. Considering the transportation and quick installation of the support 11, the overall structure of the support 11 can be divided into multiple detachable sections, and flange bolts are used to connect the sections. The unloading platform 13 is fixed to the support 11 by welding or screwing, and each layer of the unloading platform 13 is consistent with the elevation of each floor of the factory building 100; the unloading platform 13 is formed by lap jointing of a platform 131, a lap plate 132 and a fence 133, wherein the platform 131 and the lap plate 132 are arranged around the periphery of the support 11 for staff to walk around, and the lap plate 132 is arranged on the side close to the factory door to connect the support 11 and the factory wall; the fence 133 is arranged on the platform 131 to prevent people from falling. When the device is assembled, the support 11 is installed on the ground foundation by anchor bolts, and the lap plate 132 on the side is fixed to the embedded plate of the outer wall of the factory building by fasteners (such as bolts).

[0064] Reference Figures 5 to 7There are two lifting mechanisms 3, including a drum 31, a driving assembly 32 for driving the drum 31 to rotate, and a traction rope 33 wound on the drum 31, and the traction rope 33 can be a steel wire rope; a set of balancing pulleys are respectively arranged on the opposite sides of the car 2, and the two sets of balancing pulleys are arranged corresponding to the two lifting mechanisms 3; the balancing pulleys include an upper wheel group installed on the top of the support frame 1 and a lower wheel group installed on the car 2, and the upper wheel group is connected to the lower wheel group through the traction rope 33. The design of the two sets of balancing pulleys allows the car 2 to move up and down smoothly, ensuring the safety of the device.

[0065] Specific reference Figure 6 The driving assembly 32 includes a motor 321 and a reducer 322 connected to each other, and the reducer 322 is connected to the drum 31; the reducers 322 in the two lifting mechanisms 3 are connected through a synchronous shaft 6. In this embodiment, the motors 321 and reducers 322 in the two driving assemblies 32 are symmetrically arranged above the top mounting seat 12, and the synchronous shaft 6 is arranged between the two reducers 322; the synchronous shaft 6 can ensure that the two lifting mechanisms 3 act synchronously, ensuring that both sides of the car 2 are subjected to force at the same time, so that the movement of the car 2 is more stable.

[0066] Reference Figures 6 to 8 , the upper wheel group includes N upper pulleys 51, and N is an even number greater than or equal to 2; the number of lower pulleys 52 is one more than the number of upper pulleys 51; the upper wheel group and the lower wheel group are designed symmetrically, and the traction rope 33 is alternately wound around the lower pulley 52 and the upper pulley 51. On the basis of the above structure, the two ends of the traction rope 33 are wound corresponding to the two ends of the drum 31, and the winding direction of the traction rope 33 is the same; the middle part of the traction rope 33 is wound around the balance pulley group. This arrangement structure can ensure that when the car 2 is lifted, the connection point of the traction rope 33 and the car 2 is lifted synchronously, the traction rope 33 is evenly stressed, and the car 2 will not be overloaded, causing the traction rope 33 to exceed the rated tension at a certain point, thereby ensuring the safety of the lifting mechanism 3.

[0067] For example, refer to Figure 7 In this embodiment, the number of upper pulleys 51 is 2, the number of lower pulleys 52 is 3, the traction rope 33 is led out from one side of the drum 31, and returns to the drum 31 from the bottom of the left lower pulley 52, the top of the left upper pulley 51, the bottom of the middle lower pulley 52, the top of the right upper pulley 51, and the bottom of the right lower pulley 52 in sequence.

[0068] Furthermore, one or more of the upper pulleys 51 are provided with a load limit sensor, and the load limit sensor is linked to the lifting mechanism 3; optionally, the load limit sensor is provided with a secondary instrument and a display screen, which can display the load in the car in real time, so as to facilitate the inspection of the staff. In this embodiment, a load limit sensor is provided on one of the upper pulleys 51 in each set of balancing pulleys. When any load limit sensor detects that the lifting mechanism 3 is overloaded, the brake is activated to brake the lifting mechanism 3. In addition, an overspeed switch is provided at one end of the drum bearing seat. When it is detected that the lifting speed exceeds the rated speed, an alarm is sounded, the brake is activated, the lifting mechanism 3 is braked, and then the car 2 is slowly dropped to the first floor.

[0069] Reference Figure 7 , a locking pin 8 and a driving member for driving the locking pin 8 to extend and retract are provided at the bottom of the car 2, and a plurality of holes for the locking pin 8 to be inserted are provided on the support frame 1 in the vertical direction. After the car 2 reaches the designated floor, the driving member drives the locking pin 8 to be inserted into the reserved hole on the support frame 1, thereby locking the position of the car 2 relative to the support frame 1. The above arrangement can overcome the eccentric load caused by the loading truck getting on and off the car, ensuring smooth lifting of the car; and, during the entry of the front wheel of the loading truck, a unilateral force is applied to the car 2, and the eccentric load force of the car 2 is transmitted to the main steel structure through the locking pin 8, preventing the car 2 from tilting too much.

[0070] Reference Figures 9 to 11 , a plurality of first guide wheel groups are arranged on the outer wall of the car 2, each of which includes two first guide wheels 71; a vertical guide rail 1111 is arranged on the support frame 1, and the vertical guide rail 1111 is sandwiched between the two first guide wheels 71 in a group of first guide wheel groups, and the two sides of the vertical guide rail 1111 are tangent to the two first guide wheels 71 respectively; in this embodiment, a first guide wheel group is arranged on the two opposite outer walls of the car 2, and accordingly, two vertical guide rails 1111 are arranged. A second guide wheel 72 is arranged on the outer wall of the car 2, and the second guide wheel 72 is tangent to the inner wall of the support frame 1; in this embodiment, the second guide wheels 72 are arranged at the four corners of the car 2, and a second guide wheel 72 is arranged between the two first guide wheels 71 in each group of first guide wheel groups. The car 2 is moved in the up and down direction of the support frame 1 by the first guide wheel 71 and the second guide wheel 72.

[0071] In this embodiment, a proximity switch is provided 500 mm above and below each floor of the supporting frame 1 (i.e., the unloading platform 13), and a stop switch is provided at each floor. The car 2 decelerates when it reaches the proximity switch and stops at the stop switch; an upper limit switch is provided 500 mm above the topmost floor, which plays a protective role when the car 2 stops out of control at the topmost level position; control buttons are provided on each floor for controlling the car 2 to reach the designated floor.

[0072] The installation sequence of the lifting device provided in this embodiment is as follows:

[0073] S1: Foundation construction: The main construction contents include foundation pit excavation, cushion layer construction, retaining wall construction, steel bar binding, embedded parts installation, concrete pouring and maintenance, etc.;

[0074] S2: Installation of the bracket 11 and the unloading platform 13: First, prefabricate and assemble them into 3 sections at the construction site. After the on-site foundation maintenance is completed and the strength meets the requirements, each section of the bracket 11 is hoisted into place, and the assembly is carried out in principle of lower first and then upper. After the lower section is installed and fixed, the upper section is assembled; the bottom plate of the bracket 11 is fixed with anchor bolts, and the unloading platform 13 is fixed to the bracket 11 by welding or screwing. The lap plates 132 of each layer on the side are welded and fixed to the embedded plates of the outer wall of the corresponding factory building 100 floors;

[0075] S3: Installation of the top mounting seat 12 and the shelter 14: The top mounting seat 12 is assembled into a whole on the ground. After the bracket 11 is installed, the top mounting seat 12 is hoisted in place as a whole. After the bolt holes of the top mounting seat 12 and the bracket 11 are aligned, they are fastened with high-strength bolts; after the top mounting seat 12 is installed, the shelter 14 is hoisted in place as a whole. After the bolt holes of the column base of the shelter 14 are aligned with the bolt holes of the top mounting seat 12, they are connected with high-strength bolts;

[0076] S5: Installation of car 2 and buffer: After the foundation construction is completed, the buffer and car 2 are released, the buffer is installed first, and the car 2 is assembled into a whole at the assembly site (except the guide wheel). Before the bracket 11 is assembled, the car 2 is placed at the installation position of the car 2, and the sleepers are temporarily supported above the buffer and below the car 2. After the top mounting seat 12 is installed, the position of the car 2 is adjusted. After the adjustment of the car 2, the first guide wheel 71, the second guide wheel 72, the traction rope 33 and the car 2 are connected;

[0077] S6: Installation of protective door 15: The protective door 15 is manufactured according to the door opening size of each floor of the factory building 100, and the protective door 15 of each floor is installed after the on-site conditions are met. The protective doors 15 of the remaining floors except the first floor are installed in the factory building 100, and the first floor is installed on the side of the support frame 1 away from the factory building 100;

[0078] S7: Electrical installation: After the main mechanism of the lifting device is installed, electrical installation is carried out, mainly including limit switch installation, bridge installation, cable laying, accompanying cable installation, grounding installation, cable termination and electrical commissioning;

[0079] S8: System load test and debugging: Before the test, conduct mechanical structure and electrical inspections. After confirmation, conduct no-load, static load, and dynamic load test runs to ensure that the device structure and function meet the design requirements.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lifting device, characterized in that: include: Support frame (1); A car (2) is slidably disposed in the support frame (1) and is used to carry goods; A lifting mechanism (3) is installed on the top of the support frame (1) and is used to drive the car (2) to slide vertically inside the support frame (1); An electric hoist (4) is installed on the top of the support frame (1) and is used to lift and place goods.

2. The lifting device according to claim 1, characterized in that: The lifting mechanism (3) is two in number and comprises a drum (31), a driving assembly (32) for driving the drum (31) to rotate, and a traction rope (33) wound around the drum (31); A set of balancing pulley groups are respectively arranged on opposite sides of the car (2), and the two sets of balancing pulley groups are arranged corresponding to the two lifting mechanisms (3); the balancing pulley group includes an upper wheel group installed on the top of the support frame (1) and a lower wheel group installed on the car (2), and the upper wheel group is connected to the lower wheel group through the traction rope (33).

3. The lifting device according to claim 2, characterized in that: Each of the driving components (32) comprises a motor (321) and a reducer (322) connected to each other, and the reducer (322) is connected to the reel (31); The reducers (322) in the two lifting mechanisms (3) are connected via a synchronous shaft (6).

4. The lifting device according to claim 2, characterized in that: The upper wheel group includes N upper pulleys (51), and N is an even number greater than or equal to 2; the lower wheel group includes a plurality of lower pulleys (52), and the number of the lower pulleys (52) is one more than the number of the upper pulleys (51); the upper wheel group and the lower wheel group are symmetrically designed, and the traction rope (33) is alternately wrapped around the lower pulleys (52) and the upper pulleys (51).

5. The lifting device according to claim 4, characterized in that: The two ends of the traction rope (33) are wound corresponding to the two ends of the drum (31), and the winding directions of the two ends of the traction rope (33) are the same; the middle part of the traction rope (33) is wound around the balancing pulley block.

6. The lifting device according to claim 4, characterized in that: One or more of the upper pulleys (51) are provided with a load limiting sensor, and the load limiting sensor is linked to the lifting mechanism (3).

7. The lifting device according to claim 1, characterized in that: A plurality of first guide wheel groups are arranged on the outer side wall of the car (2), each of the first guide wheel groups comprising two first guide wheels (71); a vertical guide rail (1111) is arranged on the support frame (1), and the vertical guide rail (1111) is sandwiched between two first guide wheels (71) in a group of the first guide wheel groups; A second guide wheel (72) is provided on the outer side wall of the car (2), and the second guide wheel (72) is tangent to the inner side wall of the support frame (1).

8. The lifting device according to claim 1, characterized in that: The bottom of the car (2) is provided with a locking latch (8) and a driving member for driving the locking latch (8) to extend and retract, and the support frame (1) is provided with a plurality of holes for inserting the locking latch (8) in the vertical direction.

9. The lifting device according to claim 1, characterized in that: The support frame (1) comprises a bracket (11), a top mounting seat (12) and a loading platform (13) which are detachably mounted on the bracket (11); The top mounting seat (12) is mounted on the top of the bracket (11), the lifting mechanism (3) and the electric hoist (4) are mounted on the top mounting seat (12), the car (2) is capable of sliding in the bracket (11), and the unloading platform (13) is arranged around the bracket (11).

10. The lifting device according to claim 1, characterized in that: A shielding shed (14) is installed on the top of the support frame (1), and the lifting mechanism (3) is arranged below the shielding shed (14).

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