A reciprocating vertical hoist

Abstract

The present invention discloses a reciprocating vertical hoist, comprising: a stand, a deceleration drive assembly, a correction adjustment assembly and a correction monitoring assembly, the top of the stand is provided with a driving base for arranging the deceleration drive assembly, the two sides of the stand are respectively slidably mounted with a lifting bracket and a counterweight basket, and the tops of the lifting bracket and the counterweight basket are connected to each other through a strip, and the deceleration drive assembly comprises a driving motor, a rotating drum, a flexible wheel and a wave generator rotatably mounted on the inner side of the rotating drum. In the present invention, by setting a new variable transmission structure, the harmonic deceleration motion of the rotating drum is realized by abutting the flexible wheel transmission on the surface of the wave generator through the abutting wheel, and the diameter of the flexible wheel is adjusted under the control of the correction adjustment assembly, resulting in changes in the deformation degree and shape of the flexible wheel, thereby affecting the fitting state and transmission efficiency between the flexible wheel and the rigid wheel gear sleeve, and adjusting and automatically correcting the work by changing the transmission ratio when the motor speed remains unchanged.

Description

Technical Field

[0001] The invention relates to the technical field of elevators, in particular to a reciprocating vertical elevator. Background Art

[0002] With the rapid development of modern industrial technology, material handling and vertical lifting equipment play an increasingly important role in industrial production. As an efficient and flexible material lifting equipment, reciprocating vertical hoists are widely used in warehouses, production lines, logistics centers and other fields. However, traditional reciprocating vertical hoists often have problems such as insufficient precision and poor stability during the lifting process, which makes it difficult to meet the production requirements of high precision and high efficiency. Therefore, the development of a reciprocating vertical hoist that can automatically correct and improve lifting accuracy and stability has important practical significance and application value.

[0003] The problems of traditional reciprocating vertical hoists are as follows:

[0004] Insufficient precision: Traditional reciprocating vertical hoists are often affected by various factors during the lifting process, such as mechanical friction, electrical interference, etc., resulting in insufficient lifting accuracy and difficulty in meeting the needs of high-precision production.

[0005] Poor stability: During the lifting process, due to factors such as load changes and mechanical vibrations, traditional reciprocating vertical hoists are prone to shaking, offset, friction and slippage, affecting the stability and safety of the equipment.

[0006] Low degree of automation: Traditional reciprocating vertical hoists mostly use manual or simple automatic control methods, which makes it difficult to achieve efficient and accurate automated lifting operations. Summary of the invention

[0007] The present invention aims to solve one of the technical problems existing in the prior art or related technology.

[0008] To this end, the technical solution adopted by the present invention is: a reciprocating vertical hoist, comprising: a stand, a reduction drive assembly, a correction adjustment assembly and a correction monitoring assembly, the top of the stand is provided with a driving base for arranging the reduction drive assembly, the two sides of the stand are respectively slidably mounted with a lifting bracket and a counterweight basket, and the tops of the lifting bracket and the counterweight basket are connected to each other through strips, the reduction drive assembly comprises a driving motor, a drum, a flexible wheel and a wave generator rotatably mounted on the inner side of the drum, the output end of the driving motor is fixedly connected to a main shaft rod rotatably mounted on the surface of the driving base, the other end of the main shaft rod is fixedly connected to the inner side of the wave generator, the surface of the wave generator is movably mounted with a wheel symmetrically arranged about the center of the wave generator, and the correction monitoring assembly comprises a positioning mark plate and a monitoring sensor respectively fixed to the surface of the stand and the lifting bracket;

[0009] The correction and adjustment assembly includes a driving sleeve, a threaded guide plate and two sliders slidably mounted on the surface of the wave generator. The surface of the reduction drive assembly is provided with a motor group that is drivingly engaged with the end of the driving sleeve. The abutment wheel is rotatably mounted on the surface of the slider and is slidingly engaged with the inner side of the flexible wheel. A rigid wheel gear sleeve is fixedly mounted on the inner side of the rotating drum, and the rigid wheel gear sleeve is drivingly engaged with the surface of the flexible wheel. The strip is arranged around the surface of the rotating drum.

[0010] In a preferred example, the present invention can be further configured as follows: the monitoring sensor is a millimeter wave radar sensor or a grating sensor structure, and the surface of the positioning mark plate is provided with a plurality of grating bar holes distributed along the straight direction of the frame.

[0011] In a preferred example, the present invention can be further configured as follows: the monitoring sensor is a Hall sensor structure, and the surface of the positioning mark plate is provided with a plurality of magnetic strips distributed along the straight direction of the stand.

[0012] In a preferred example, the present invention can be further configured as follows: the strip is a flexible rubber strip structure, and the outer periphery of the rotating drum is frosted and transmits power by friction with the surface of the strip.

[0013] In a preferred example, the present invention can be further configured as follows: the surface of the wave generator is provided with a guide groove for radial movement of the slider, two oppositely arranged sliders are radially arranged on the surface of the wave generator, the surface of the threaded guide disk is provided with a planar spiral ridge, and the surface of the slider is provided with a tooth edge that is compatible with the planar spiral ridge of the threaded guide disk.

[0014] In a preferred example, the present invention can be further configured as follows: the flexspline is a flexible sleeve wheel structure, and the number of teeth on the inner side of the rigid wheel gear sleeve is 2 more than the number of teeth on the surface of the flexspline.

[0015] In a preferred example, the present invention can be further configured as follows: the driving sleeve is rotatably sleeved on the surface of the main shaft rod and one end extends to the inner side of the wave generator and is fixedly connected to the surface of the threaded guide disk; the end of the main shaft rod passes through the threaded guide disk and is fixedly connected to the inner side of the wave generator.

[0016] In a preferred example, the present invention can be further configured as follows: the motor group on the surface of the deceleration drive assembly is used to drive the driving sleeve and the main shaft to rotate synchronously, and in the correction working state, the relative deflection movement of the driving sleeve and the main shaft is achieved by accelerating or decelerating the motor group.

[0017] The beneficial effects achieved by the present invention are:

[0018] 1. In the present invention, by setting a new variable transmission structure, the harmonic deceleration motion of the drum is realized by the abutment wheel against the flexible wheel transmission on the surface of the wave generator, and the diameter of the flexible wheel is adjusted under the control of the correction adjustment component, resulting in changes in the deformation degree and shape of the flexible wheel, thereby affecting the fitting state and transmission efficiency between the flexible wheel and the rigid wheel gear sleeve. When the motor speed remains unchanged, the work is adjusted and automatically corrected by changing the transmission ratio.

[0019] 2. In the present invention, the planetary rotation of the resistance wheel under the drive of the driving motor causes the flexible wheel to deform and move intermittently with the rigid wheel gear sleeve to achieve deceleration transmission. The transmission ratio is large and the backlash is small, which can achieve higher transmission accuracy and stability, make the speed change more accurate, and reduce the position offset and accuracy error in reciprocating lifting.

[0020] 3. In the present invention, the displacement and speed of the lifting bracket are sensed during the relative movement of the monitoring sensor and the positioning mark plate and compared with the output of the driving motor, so that the lifting accuracy is automatically calibrated and the change of the transmission ratio of the deceleration driving component is automatically corrected by controlling the correction adjustment component. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of the structure of a deceleration drive assembly according to an embodiment of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of a lifting bracket and a counterweight basket according to an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the installation structure of a correction monitoring component according to an embodiment of the present invention;

[0025] Figure 5 A schematic diagram of the structure of a deceleration drive assembly according to an embodiment of the present invention;

[0026] Figure 6 A schematic diagram of the cross-sectional structure of a reduction drive assembly according to an embodiment of the present invention;

[0027] Figure 7 It is a schematic diagram of the exploded structure of a deceleration drive assembly according to an embodiment of the present invention;

[0028] Figure 8 The figure is a schematic diagram of the decomposed structure of the correction and adjustment component according to one embodiment of the present invention.

[0029] Reference numerals:

[0030] 100, stand; 110, drive base; 120, lifting bracket; 130, weight basket; 140, strip;

[0031] 200, reduction drive assembly; 210, drive motor; 220, rotating drum; 230, flexible wheel; 240, wave generator; 250, stop wheel; 211, main shaft; 221, rigid wheel gear sleeve;

[0032] 300, correction adjustment component; 310, driving sleeve; 320, slider; 330, threaded guide plate;

[0033] 400. Correction monitoring component; 410. Monitoring sensor; 420. Positioning mark plate. DETAILED DESCRIPTION

[0034] To make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in combination with specific implementations and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0035] It is to be understood that these descriptions are exemplary only and are not intended to limit the scope of the invention.

[0036] A reciprocating vertical hoist provided by some embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0037] Combination Figure 1-Figure 8 As shown, a reciprocating vertical hoist provided by the present invention comprises: a stand 100, a deceleration drive assembly 200, a correction adjustment assembly 300 and a correction monitoring assembly 400, a driving base 110 for arranging the deceleration drive assembly 200 is provided at the top of the stand 100, a lifting bracket 120 and a counterweight basket 130 are slidably mounted on both sides of the stand 100, and the tops of the lifting bracket 120 and the counterweight basket 130 are connected to each other through a strip 140, and the deceleration drive assembly 200 comprises a driving motor 210, a rotating drum 220, a flexible wheel 230 and a wave generator 240 rotatably mounted on the inner side of the rotating drum 220, the output end of the driving motor 210 is fixedly connected to a main shaft 211 rotatably mounted on the surface of the driving base 110, the other end of the main shaft 211 is fixedly connected to the inner side of the wave generator 240, and the surface of the wave generator 240 is movably mounted with a stopper 250 symmetrically arranged about the center of the wave generator 240, and the correction monitoring assembly 400 includes a positioning mark plate 420 and a monitoring sensor 410 respectively fixed to the surface of the stand 100 and the lifting bracket 120;

[0038] The correction and adjustment assembly 300 includes a driving sleeve 310, a threaded guide plate 330 and two sliders 320 slidably mounted on the surface of the wave generator 240. The surface of the reduction drive assembly 200 is provided with a motor group that is drivingly engaged with the end of the driving sleeve 310. The abutment wheel 250 is rotatably mounted on the surface of the slider 320 and is slidingly engaged with the inner side of the flexible wheel 230. A rigid wheel gear sleeve 221 is fixedly mounted on the inner side of the rotating drum 220, and the rigid wheel gear sleeve 221 is drivingly engaged with the surface of the flexible wheel 230. The belt 140 is arranged around the surface of the rotating drum 220.

[0039] In this embodiment, the monitoring sensor 410 is a millimeter wave radar sensor or a grating sensor structure, and the surface of the positioning mark plate 420 is provided with a plurality of grating bar holes distributed along the straight direction of the stand 100.

[0040] Specifically, the relative movement of the monitoring sensor 410 and the positioning mark plate 420 is sensed by a millimeter wave radar sensor or a grating sensor to achieve the movement displacement and speed measurement of the lifting bracket 120.

[0041] In this embodiment, the monitoring sensor 410 is a Hall sensor structure, and the surface of the positioning mark plate 420 is provided with a plurality of magnetic strips distributed along the straight direction of the stand 100 .

[0042] Specifically, the position of the magnetic stripe on the surface of the positioning mark plate 420 is sensed by the Hall sensor, and the relative movement of the monitoring sensor 410 and the positioning mark plate 420 is sensed to achieve the movement displacement and speed measurement of the lifting bracket 120.

[0043] In this embodiment, the strip 140 is a flexible rubber strip structure, and the outer periphery of the rotating drum 220 is frosted and transmits power through friction with the surface of the strip 140 .

[0044] In this embodiment, the surface of the wave generator 240 is provided with a guide groove for the radial movement of the slider 320, two oppositely arranged sliders 320 are radially arranged on the surface of the wave generator 240, the surface of the threaded guide disk 330 is provided with a planar spiral ridge, and the surface of the slider 320 is provided with a tooth edge that is compatible with the planar spiral ridge of the threaded guide disk 330.

[0045] Specifically, when the driving sleeve 310 and the wave generator 240 are relatively rotated, the slider 320 is driven by the threaded guide plate 330 to move radially on the surface of the wave generator 240 , and the abutment wheel 250 is adjusted to abut against or disengage from the inner side of the flexible wheel 230 .

[0046] In this embodiment, the flexible spline 230 is a flexible sleeve structure, and the number of teeth on the inner side of the rigid spline gear sleeve 221 is two more than the number of teeth on the surface of the flexible spline 230 .

[0047] Specifically, the wave generator 240 and the stop wheel 250 deform the flexible wheel 230 into an elliptical shape, thereby causing the flexible wheel 230 to mesh with the gear portion of the rigid wheel gear sleeve 221. When the wave generator 240 retracts, no transmission occurs between the flexible wheel 230 and the rigid wheel gear sleeve 221, thereby correcting the transmission error between the motor output and the drum 220.

[0048] In this embodiment, the driving sleeve 310 is rotatably sleeved on the surface of the main shaft rod 211 and one end extends to the inner side of the wave generator 240 and is fixedly connected to the surface of the threaded guide disk 330. The end of the main shaft rod 211 passes through the threaded guide disk 330 and is fixedly connected to the inner side of the wave generator 240.

[0049] Furthermore, the motor group on the surface of the reduction drive assembly 200 is used to drive the driving sleeve 310 and the main shaft 211 to rotate synchronously, and in the correction working state, the relative deflection movement of the driving sleeve 310 and the main shaft 211 is achieved by accelerating or decelerating the motor group.

[0050] Specifically, during the relative movement between the monitoring sensor 410 and the positioning mark plate 420, the movement displacement and speed of the lifting bracket 120 are sensed and compared with the output of the drive motor 210, and the lifting accuracy is automatically calibrated and the change of the transmission ratio of the deceleration drive component 200 is automatically corrected by controlling the correction adjustment component 300.

[0051] The working principle and use process of the present invention:

[0052] In the operation of the reciprocating vertical hoist, the lifting bracket 120 is reciprocated on the surface of the vertical frame 100 to perform lifting and lowering and material lifting work. Different weights of counterweight blocks can be placed inside the counterweight basket 130 to match the weight of the goods to reduce the lifting energy consumption of the equipment. The reciprocating rotation of the drum 220 causes the belt 140 to move, thereby realizing the reciprocating lifting work of the lifting bracket 120;

[0053] Under the drive of the driving motor 210, the main shaft rod 211 synchronously drives the driving sleeve 310, the wave generator 240 and the surface wheel 250 to move, and the wheel 250 rotates on the inner side of the flexible wheel 230 to deform the flexible wheel 230, so as to realize the reduction transmission between the flexible wheel 230 and the rigid wheel gear sleeve 221, and drive the drum 220 to perform uniform low-speed motion. The planetary rotation of the wheel 250 makes the deformation motion of the flexible wheel 230 intermittently and the transmission of the rigid wheel gear sleeve 221 to realize the reduction transmission, with a large transmission ratio and a small backlash, so as to achieve higher transmission accuracy and stability, make the speed change more accurate, and reduce the position offset and accuracy error in reciprocating lifting;

[0054] When the lifting bracket 120 moves, the movement state of the lifting bracket 120 is monitored by the monitoring sensor 410, the surface of the positioning mark plate 420 is monitored, and the relative position change displacement and rate between the monitoring sensor 410 and the positioning mark plate 420 are sensed, and compared with the output of the driving motor 210 to perform automatic lifting accuracy calibration; that is, the driving sleeve 310 is stopped, decelerated or accelerated by controlling the braking component on the surface of the deceleration driving component 200, so that the driving sleeve 310 and the rotating main shaft rod 211 are relatively deflected, that is, the threaded guide plate 330 rotates relatively on the inner side of the wave generator 240, so that the slider 320 moves radially relative to the surface of the threaded guide plate 330, so that the flexible wheel 230 and the rigid wheel gear sleeve 221 have a gap sliding after the radial retreat of the resistance wheel 250, and the slider 320 is reset during the accelerated rotation of the driving sleeve 310, so that the two are re-engaged in transmission, thereby completing the automatic correction work.

[0055] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A reciprocating vertical hoist, characterized in that: include: A stand (100), a deceleration drive assembly (200), a correction adjustment assembly (300) and a correction monitoring assembly (400), wherein the top of the stand (100) is provided with a drive base (110) for arranging the deceleration drive assembly (200), and both sides of the stand (100) are slidably mounted with a lifting bracket (120) and a counterweight basket (130), and the tops of the lifting bracket (120) and the counterweight basket (130) are connected to each other via a strip (140), and the deceleration drive assembly (200) comprises a drive motor (210), a rotating drum (220), a flexible wheel (230) and a rotating wheel (230) mounted on the stand (100). A wave generator (240) is disposed inside the rotating drum (220); the output end of the driving motor (210) is fixedly connected to a main shaft (211) rotatably mounted on the surface of the driving base (110); the other end of the main shaft (211) is fixedly connected to the inside of the wave generator (240); a stopper (250) symmetrically arranged about the center of the wave generator (240) is movably mounted on the surface of the wave generator (240); and the correction monitoring assembly (400) comprises a positioning mark plate (420) and a monitoring sensor (410) respectively fixed to the surfaces of the stand (100) and the lifting bracket (120); The correction adjustment assembly (300) comprises a driving sleeve (310), a threaded guide disc (330), and two sliders (320) slidably mounted on the surface of a wave generator (240); a motor group drivingly engaged with the end of the driving sleeve (310) is provided on the surface of the reduction drive assembly (200); the abutment wheel (250) is rotatably mounted on the surface of the slider (320) and is in sliding contact with the inner side of the flexible wheel (230); a rigid wheel gear sleeve (221) is fixedly mounted on the inner side of the rotating drum (220), and the rigid wheel gear sleeve (221) is drivingly engaged with the surface of the flexible wheel (230); and the strip (140) is arranged around the surface of the rotating drum (220).

2. A reciprocating vertical hoist according to claim 1, characterized in that: The surface of the positioning mark plate (420) is provided with a plurality of grid bar holes distributed along the straight direction of the stand (100).

3. A reciprocating vertical hoist according to claim 1, characterized in that: The monitoring sensor (410) is a Hall sensor structure, and the surface of the positioning mark plate (420) is provided with a plurality of magnetic strips distributed along the straight line direction of the stand (100).

4. A reciprocating vertical hoist according to claim 1, characterized in that: The strip (140) is a flexible rubber strip structure, and the outer periphery of the rotating drum (220) is a frosted surface and is frictionally driven with the surface of the strip (140).

5. A reciprocating vertical hoist according to claim 1, characterized in that: The surface of the wave generator (240) is provided with a guide groove for radial movement of a slider (320), two sliders (320) arranged opposite to each other are arranged radially on the surface of the wave generator (240), the surface of the threaded guide disc (330) is provided with a planar spiral convex strip, and the surface of the slider (320) is provided with a tooth edge that matches the planar spiral convex strip of the threaded guide disc (330).

6. A reciprocating vertical hoist according to claim 1, characterized in that: The flexible wheel (230) is a flexible sleeve wheel structure, and the number of teeth on the inner side of the rigid wheel gear sleeve (221) is 2 more than the number of teeth on the surface of the flexible wheel (230).

7. A reciprocating vertical hoist according to claim 1, characterized in that: The driving sleeve (310) is rotatably sleeved on the surface of the main shaft (211) and one end of the driving sleeve extends to the inner side of the wave generator (240) and is fixedly connected to the surface of the threaded guide disc (330). The end of the main shaft (211) passes through the threaded guide disc (330) and is fixedly connected to the inner side of the wave generator (240).

8. A reciprocating vertical hoist according to claim 1, characterized in that: The motor group on the surface of the deceleration drive assembly (200) is used to drive the driving rotating sleeve (310) and the main shaft rod (211) to rotate synchronously, and in the correction working state, the relative deflection movement of the driving rotating sleeve (310) and the main shaft rod (211) is achieved by accelerating or decelerating the motor group.

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