Elevator

Abstract

The utility model relates to a hoister, including main body frame, lifting frame, conveying mechanism and lifting mechanism, the lifting mechanism includes rack, gear and drive motor, the plurality of rack is vertically arranged on the main body frame and is distributed around the lifting frame, each rack is equipped with one gear, and the drive motor is driven by the gear. Each gear is provided with a set of driving motors, and the driving motors drive the gears to ascend and descend along the racks. The lifting frame is arranged in the main body frame, the racks distributed on the periphery are matched with the gears, the stability of the lifting frame in the lifting process is guaranteed, each rack is provided with one gear and is driven by the independent driving motor, lifting operation of the lifting frame is more efficient, and the lifting effect is better. The lifting speed and position can be accurately controlled according to needs, and the positioning accuracy of the elevator is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of logistics conveying equipment, particularly relates to a hoist. BACKGROUND

[0002] The hoist is widely used in the field of warehousing logistics as a lifting equipment, the existing hoist is composed of a power driving system, a rolling guide mechanism, a counterweight mechanism, a car loading mechanism and an electric control system, and the car is made to run up and down through a PLC control system. However, the existing hoist is more realized by a chain structure or a traction machine, and this kind of mode adopts flexible connection, and under different loads, different extension amounts will be presented, in addition, this kind of mode will be accompanied by problems such as subsidence when stopping, which will cause the positioning accuracy of the hoist to not reach the expectation.

[0003] The utility model discloses a kind of hoist of Chinese utility model patent for grant announcement No.CN220976435U, including frame and lifting platform, transmission mechanism includes first sprocket being set to driving mechanism driving end and first chain being set on frame, driving mechanism is configured as driving first sprocket along first chain lifting, hoist adopts sprocket chain to lift transmission, but under different loads, chain will present different extension amount, and will be accompanied by problems such as subsidence, affect the positioning accuracy of hoist. SUMMARY

[0004] The utility model aims at providing a kind of hoist to solve the problems raised in the background art.

[0005] The above-mentioned purpose of the utility model is realized by the following technical scheme: a hoist, comprising a main frame, a lifting frame disposed within the main frame, a conveying mechanism disposed on the lifting frame, and a lifting mechanism for driving the lifting frame to move, the lifting mechanism comprising a rack, a gear and a drive motor, a plurality of racks are vertically disposed on the main frame and distributed around the lifting frame, each rack is provided with a gear, and each gear is provided with a group of drive motors, and the drive motor drives the gear to lift along the rack.

[0006] Preferably, the main frame includes four vertical columns, and the four racks are fixed to the four vertical columns.

[0007] Preferably, the two front and rear racks on the same side of the main frame are oppositely arranged, the gear is located between the two front and rear racks and is disposed on the output shaft of the drive motor, and the number of drive motors is four groups, which are separately arranged at the four corners of the lifting frame.

[0008] Preferably, a movable mounting seat is arranged on the lifting frame, the driving motor is arranged on the mounting seat, the gear is movable forward and backward relative to the rack through the mounting seat, and one side of the mounting seat is provided with a pressing assembly.

[0009] Preferably, the mounting seat comprises a fixed mounting plate fixed on the lifting frame and a movable mounting plate slidably arranged above the fixed mounting plate, the pressing assembly comprises a fixed block fixed on one side of the mounting seat and a pressing bolt screwed on the fixed block, and the end of the pressing bolt abuts against the movable mounting plate.

[0010] Preferably, guide wheels are further arranged at four corners of the lifting frame, guide grooves are arranged on the stand, and the guide wheels roll up and down in the guide grooves.

[0011] Preferably, a counterweight is arranged on the main frame, and the counterweight is connected with the lifting frame through connecting pieces.

[0012] Preferably, a plurality of transmission wheels are arranged at the top end of the main frame, the transmission wheels are distributed left and right, and the connecting pieces are connected with the counterweight and the lifting frame after passing through the transmission wheels.

[0013] The utility model discloses the beneficial effects of the following:

[0014] 1. The utility model discloses a lifting frame arranged in the main frame, and the rack and gear cooperation distributed around, ensure the stability of lifting frame in the process of lifting, reduce the shaking, make lifting more stable and reliable.

[0015] 2. Each rack is provided with a gear, and is driven by an independent driving motor, so that the lifting operation of the lifting frame is more efficient, the lifting speed and position can be accurately controlled according to the needs, and the positioning accuracy of the elevator is improved. DRAWINGS

[0016] Figure 1 It is the structure schematic diagram of the utility model embodiment.

[0017] Figure 2 It is Figure 1 The partial close -up of A in it.

[0018] In the drawing: 1 - main frame, 101 - stand, 102 - guide groove, 2 - lifting frame, 3 - conveying mechanism, 4 - lifting mechanism, 401 - driving motor, 402 - gear, 403 - rack, 404 - fixed mounting plate, 405 - movable mounting plate, 406 - fixed block, 407 - pressing bolt, 5 - guide wheel, 6 - counterweight, 7 - connecting piece, 8 - transmission wheel. DETAILED DESCRIPTION

[0019] The utility model will be further explained in detail in combination with the drawings.

[0020] The embodiments are only an explanation of the utility model, and are not a limitation of the utility model. Those skilled in the art can make modifications to the embodiments without creative contribution after reading the specification, but as long as the modifications are within the scope of the claims of the utility model, they are protected by the patent law.

[0021] Embodiment: as Figure 1 Illustrated, a kind of hoist, including main body frame 1, lifting frame 2, conveying mechanism 3 and lifting mechanism 4, lifting frame 2 is installed in main body frame 1 and can be moved up and down relative to main body frame 1.

[0022] Main body frame 1 is the frame structure by four columns 101, four columns 101 are distributed around lifting frame 2, lifting frame 2 is respectively equipped with guide wheel 5 at four corners, and guide groove 102 is provided on column 101, and guide wheel 5 rolls up and down in guide groove 102.

[0023] Conveying mechanism 3 uses conventional chain conveyor or synchronous belt conveyor, and conveying mechanism 3 is two, which is distributed on lifting frame 2 with left and right interval.

[0024] As Figure 2 Illustrated, lifting mechanism 4 includes rack 403, gear 402 and drive motor 401, and a plurality of racks 403 are vertically arranged on main body frame 1 and distributed around lifting frame 2. Each rack 403 is configured with a gear 402, and each gear 402 is configured with a group of drive motors 401, and the drive motor 401 drives the gear 402 to lift along the rack 403. In the embodiment, the gear 402 is installed on the output shaft of the corresponding drive motor 401, and the drive motor 401 is a stepper motor.

[0025] In the embodiment, the number of racks 403 is four, and the four racks 403 are fixed on the four columns 101. The front and rear two racks 403 located on the same side of main body frame 1 are oppositely arranged, and the two gears 402 located on the same side of main body frame 1 are located between the front and rear two racks 403. The number of drive motors 401 is four, which are arranged at the four corners of lifting frame 2.

[0026] As Figure 2 Illustrated, movable mounting seat is arranged on lifting frame 2, drive motor 401 is arranged on mounting seat, gear 402 can move forward and backward relative to rack 403 through mounting seat, and one side of mounting seat is provided with compression assembly.

[0027] The mounting seat comprises a fixed mounting plate 404 fixed on the lifting frame 2 and a movable mounting plate 405 slidably mounted above the fixed mounting plate 404, the fixed mounting plate 404 and the movable mounting plate 405 are mounted through a sliding groove cooperation, the movable mounting plate 405 can move forward and backward relative to the fixed mounting plate 404 along the rack 403 to adjust the position of the driving motor 401 and the gear 402, so as to ensure the meshing of the gear 402 and the rack 403. The fixed mounting plate 404 and the movable mounting plate 405 are both provided with a long slot, and a fastening bolt is mounted in the long slot.

[0028] The pressing assembly comprises a fixed block 406 fixed on one side of the mounting seat and a pressing bolt 407 screwed on the fixed block 406, the end of the pressing bolt 407 is pressed on the movable mounting plate 405 to prevent the movable mounting plate 405 from moving and causing the gear 402 and the rack 403 to be not fully meshed.

[0029] The main frame 1 is provided with a counterweight 6, the counterweight 6 is connected with the lifting frame 2 through a connecting piece 7. The top end of the main frame 1 is provided with a plurality of transmission wheels 8, the transmission wheels 8 are distributed left and right, and a plurality of connecting pieces 7 are connected with the counterweight 6 and the lifting frame 2 after passing through the transmission wheels 8. Among them, the counterweight 6 is composed of a conventional configuration frame and a counterweight block, the transmission wheel 8 adopts a chain wheel, and the connecting piece 7 adopts a chain. In this embodiment, the number of connecting pieces 7 is four, and two connecting pieces 7 are connected on each side of the lifting frame 2.

Claims

1. A hoist, comprising a main frame (1), a lifting frame (2) arranged in the main frame (1), a conveying mechanism (3) arranged on the lifting frame (2), and a lifting mechanism (4) for driving the lifting frame (2) to move, characterized in that: The lifting mechanism (4) includes a rack (403), a gear (402) and a drive motor (401). A plurality of racks (403) are vertically arranged on the main frame (1) and distributed around the lifting frame (2). Each rack (403) is equipped with a gear (402). Each gear (402) is equipped with a set of drive motors (401). The drive motors (401) drive the gears (402) to rise and fall along the racks (403).

2. A hoist according to claim 1, characterized in that: The main frame (1) includes four columns (101), the four columns (101) are distributed around the lifting frame (2), and the four racks (403) are fixed on the four columns (101).

3. A hoist according to claim 2, characterized in that: The two front and rear racks (403) located on the same side of the main frame (1) are arranged opposite to each other, and the gear (402) is located between the two front and rear racks (403) and is arranged on the output shaft of the drive motor (401). The drive motors (401) are four in number and are arranged at the four corners of the lifting frame (2).

4. The hoist according to claim 3, characterized in that: A movable mounting seat is provided on the lifting frame (2), the driving motor (401) is provided on the mounting seat, the gear (402) can move forward and backward relative to the rack (403) through the mounting seat, and a pressing assembly is provided on one side of the mounting seat.

5. The elevator according to claim 4, characterized in that: The mounting seat comprises a fixed mounting plate (404) fixed on the lifting frame (2) and a movable mounting plate (405) slidably mounted above the fixed mounting plate (404); the pressing assembly comprises a fixed block (406) fixed on one side of the mounting seat and a pressing bolt (407) screwed on the fixed block (406); the end of the pressing bolt (407) presses against the movable mounting plate (405).

6. The elevator according to claim 3, characterized in that: Guide wheels (5) are further provided at the four corners of the lifting frame (2), and guide grooves (102) are provided on the upright column (101), and the guide wheels (5) roll up and down in the guide grooves (102).

7. The elevator according to claim 1, characterized in that: A counterweight (6) is provided on the main frame (1), and the counterweight (6) is connected to the lifting frame (2) via a connecting member (7).

8. The hoist according to claim 7, characterized in that: A plurality of transmission wheels (8) are provided at the top end of the main frame (1), and the transmission wheels (8) are distributed on the left and right sides. The plurality of connecting members (7) are connected to the counterweight member (6) and the lifting frame (2) after passing through the transmission wheels (8).

Images