A new type of combined lifting platform

Abstract

The present invention discloses a new combined lifting platform. The present invention relates to the field of rope traction lifting technology. The existing electric single-beam crane has a high height from the ground. When suspending the workpiece, if different posture adjustments of the workpiece are to be achieved, manual labor is required to pull the rope, and it is difficult to achieve the automatic posture adjustment control function. Since this type of crane does not meet the existing needs, we have proposed a new combined lifting platform. The present invention uses support columns and crossbeams to play a supporting role during the lifting process, and adjusts the movable guide rail to make the horizontal position of the device more convenient to adjust. Then, the height of the workpiece can be adjusted by controlling the electric hoist under the rail trolley, and the azimuth, pitch and roll motion of the workpiece can be achieved by controlling the bottom posture adjustment turntable. The present invention improves the degree of automation of the workpiece motion control system, saves human resources, has strong practicality, and has application prospects.

Description

Technical Field

[0001] The present invention relates to the technical field of rope traction hoisting, and in particular to a highly efficient modular novel hoisting platform, which can automatically adjust the postures of a workpiece according to user requirements. Background Art

[0002] The existing electric single-girder crane is at a high height from the ground. When suspending the workpiece, if the workpiece is to be adjusted to different postures, it is necessary to pull the rope manually, which makes it difficult to achieve the automatic posture adjustment control function. Since this type of crane does not meet the existing needs, we have proposed a new modular lifting platform. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a new modular lifting platform to solve the problem mentioned in the above background technology that the existing electric single-beam crane cannot realize the automatic adjustment and control function of the workpiece posture.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a modular new type of lifting platform, primarily consisting of a top-mounted hoisting device and a bottom-mounted attitude adjustment device. The top-mounted hoisting device is located a preset distance from the ground. The top-mounted hoisting device achieves horizontal movement of the workpiece via a movable guide rail and vertical lifting via an electric hoist below the rail-type trolley. The bottom-mounted attitude adjustment device stabilizes the workpiece via a bottom pull rope, which controls the rope length to achieve azimuth, pitch, and roll movement of the workpiece.

[0005] Furthermore, the top hoisting lifting equipment is composed of a support column, a crossbeam, a truss, a movable guide rail, a rail trolley, an electric hoist and a top hoisting rope. The support column is at a preset distance from the ground, the crossbeam is arranged on the upper surface of the support column, and the truss is installed on the crossbeam, which includes a trolley track on the upper surface, a track end stop and a connector between the truss and the crossbeam. Motor-driven rail trolleys are provided at both ends of the movable guide rail, and the rail trolley is connected to the track on the upper surface of the truss. The main part of the movable guide rail is an I-beam structure, and the I-beam structure also has a guide rail that can be loaded with a rail trolley. It adopts a vertically symmetrical structure, which can effectively reduce the bending moment on the guide rail.

[0006] Furthermore, the rail trolley is connected to an electric hoist below, which is connected to the workpiece via a top hoist rope to perform vertical lifting. The rail trolley moves horizontally on the movable guide rail, and the electric hoist below it is connected to the workpiece via a top hoist rope, thereby driving the workpiece to move horizontally synchronously.

[0007] Furthermore, the bottom posture adjustment device consists of a fixed pulley, a power transmission device, a posture adjustment turntable, a trolley, a ground guide rail, and a bottom stabilizing rope. Four sets of power transmission devices are evenly arranged at 90 degrees on the turntable. A small hole is opened in the inner wall above the turntable to allow the manual crank to pass through. The trolley is connected to the ground guide rail, and the inner wall below the trolley is in contact with the guide rail, allowing it to move with the workpiece.

[0008] Furthermore, the power transmission device comprises a servo motor, a manual crank, a worm gear reducer, a bobbin, a bobbin shaft, and a bearing seat. The servo motor, worm gear reducer, and bearing seat are fixed to a turntable. The two input ends of the worm gear reducer are connected to the servo motor and the manual crank, respectively, while the output end is connected to the bobbin. The bobbin is supported by bearing seats 1 and 2, and has an interference fit with the bobbin shaft. The bobbin and the bobbin shaft rotate synchronously, with the rope wound around the bobbin and connected to the workpiece via a fixed pulley guide.

[0009] Furthermore, the attitude adjustment turntable consists of a servo motor, a slewing bearing, a worm gear reducer, and a planetary reducer. The final stage uses a large slewing bearing and worm gear for transmission, improving transmission accuracy and chain stiffness; the primary drive utilizes a planetary reducer. The motor is an AC servo motor, which can be locked in position by the worm gear after power failure. The servo motor also includes an absolute encoder for real-time angle feedback.

[0010] The beneficial effects of the present invention are:

[0011] 1. The present invention has the advantages of light weight, simple shape, easy operation, low cost, etc. It can realize the six-degree-of-freedom movement of the workpiece, improve the degree of automation of the rope traction system, save human resources, has strong practicality, and has broad application prospects.

[0012] 2. The control rope of the posture adjustment device in the present invention has two modes: automatic control and manual adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0014] Figure 1 This is an overall view of a rope traction hoisting platform of the present invention;

[0015] Figure 2 It is an overall view of the top-mounted lifting equipment;

[0016] Figure 3This is the overall view of the bottom posture adjustment equipment;

[0017] Figure 4 、 Figure 5 This is an enlarged view of the I-beam truss;

[0018] Figure 6 This is an enlarged view of the movable guide rail;

[0019] Figure 7 It is an enlarged view of the power transmission device;

[0020] Figure 8 This is a cross-sectional view of the turntable;

[0021] Figure 9 This is a diagram of the workpiece lifting method;

[0022] in:

[0023] 1- Top lifting equipment; 2- Workpiece; 3- Bottom attitude adjustment equipment; 101- Movable guide rail trolley; 102- Movable guide rail; 103- Rail trolley; 104- Electric hoist; 105- Truss; 106- Crossbeam; 107- Support column; 301- Power transmission device; 302- Fixed pulley; 303- Inner wall of turntable; 304- Attitude adjustment turntable; 305- Trolley; 306- Ground guide rail; 401- Servo motor; 402- Winding drum; 403- Winding drum shaft; 404- Bearing seat; 405- Bearing; 406- Worm gear reducer; 407- Manual crank; 501- Slewing bearing; 502- AC servo motor; 503- Planetary reducer; 504- Worm gear transmission shaft pair. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0025] like Figure 1 As shown, a novel modular lifting platform primarily consists of a top-mounted hoisting device 1 and a bottom-mounted posture adjustment device 3. The top-mounted hoisting device 1 is positioned at a preset distance from the ground. It uses a movable guide rail to achieve horizontal movement of a workpiece 2, while an electric hoist 104 below a rail-mounted trolley 103 achieves vertical lifting. The bottom-mounted posture adjustment device 3 stabilizes the workpiece 2 using a bottom pull rope. The rope length is controlled by the bottom-mounted posture adjustment device 3 to achieve azimuth, pitch, and roll movement of the workpiece 2.

[0026] like Figure 2 As shown, the top-lifting hoisting equipment 1 consists of a support column 107, a crossbeam 106, a truss 105, a movable guide rail 102, a rail trolley 103, 101, an electric hoist 104, and a top sling. The support column 107 is a preset distance from the ground, the crossbeam 106 is arranged on the upper surface of the support column 107, and the truss 105 is mounted on the crossbeam 106. Motor-driven rail trolleys 101 are provided at both ends of the movable guide rail 102, and the rail trolleys 101 are connected to the rails on the upper surface of the truss. The rail trolley 103 is connected to the electric hoist 104 below, which is connected to the workpiece 2 via the top sling, performing a vertical lifting function. The rail trolley 103 moves horizontally on the movable guide rail 102, and the electric hoist 104 below is connected to the workpiece 2 via the top sling, thereby driving the workpiece 2 to move horizontally synchronously.

[0027] like Figure 3 As shown, the bottom posture adjustment device 3 consists of a fixed pulley 302, a power transmission device 301, a posture adjustment turntable 304, a trolley 305, a ground guide rail 306, and a bottom stabilizing rope. The trolley 305 is mounted on the ground guide rail 306. When the lifting equipment 1 controls the horizontal movement of the workpiece 2, the trolley 305 can move horizontally along the ground track 306 with the workpiece 2. The posture adjustment turntable 304 is mounted on the top surface of the trolley 305. The four power transmission devices 301 and the fixed pulleys 302 are arranged in a circle at 90° angles on the top surface of the posture adjustment turntable 304.

[0028] like Figure 4 、 Figure 5 As shown, the main body of the truss is an I-beam, mounted on top of which is a track trolley that allows the movable rail to move horizontally. Track end stops are located at each end of the truss to prevent the track trolley from derailing. The truss is also equipped with connectors to secure it to the crossbeam.

[0029] like Figure 6 As shown, motor-driven rail trolleys 101 are provided at both ends of the movable rail 102, which can drive the movable rail 102 to move horizontally on the truss 105. The main part of the movable rail 102 is an I-beam, which can be moved by the rail trolley 103 connected to the electric hoist 104.

[0030] like Figure 7As shown, the power transmission device 301 is composed of a servo motor 401, a manual crank 407, a worm gear reducer 406, a bobbin 402, a bobbin shaft 403 and a bearing seat 404. The power transmission device 301 includes two power sources, the servo motor 401 plays an automatic control function, and the manual crank 407 plays a manual control function. The worm gear reducer 406 has a self-locking function, and the bobbin 402 can maintain its current position when the servo motor 401 stops. The bobbin shaft 403 is supported by the bearing seat 404, and the bobbin 402 and the bobbin shaft 403 are interference-fitted, thereby achieving synchronous rotation of the bobbin 402 and the bobbin shaft 403, and the bottom stabilizing rope is wound around the bobbin 402. The inner wall (303) of the turntable is provided with fixed pulleys 302 matching the number of the power transmission device 301.

[0031] like Figure 8 As shown, the final stage of the attitude adjustment turntable utilizes a large slewing bearing 501 and a worm gear transmission pair 504 for transmission, improving transmission accuracy and chain stiffness. A planetary reducer 503 is used for primary transmission. The AC servo motor 502 is a motor that, after power failure, can be locked in its current position by the worm gear transmission pair 504. The AC servo motor 502 has a built-in absolute encoder that transmits angle values ​​in real time.

[0032] like Figure 9 As shown, hinges are fixed at the four lower ends of the workpiece 2, connected to cables. The workpiece is connected to the upper plate via cables. Four cables arranged in a tapered pattern above the plate converge at a point, and two cables connect to the overhead crane. When the platform rotates about the Z axis, the force applied to the two upper cables remains stable. When the platform rolls or pitches, the two cables at one end are subject to force, while the two cables at the other end are not, minimizing cable position interference.

[0033] 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 above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above 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 new type of combined lifting platform, characterized in that: The invention mainly consists of a top hoisting device (1) and a bottom attitude adjustment device (3); the top hoisting device (1) is at a preset distance from the ground, the top hoisting device (1) realizes horizontal movement of the workpiece (2) through a movable guide rail, and realizes vertical lifting through an electric hoist (104) under a rail trolley (101); the bottom attitude adjustment device (3) stabilizes the workpiece (2) through a bottom pull rope, and the bottom attitude adjustment device (3) controls the rope length to realize the azimuth, pitch and roll movement of the workpiece (2); The top hoisting and lifting equipment (1) is composed of a support column (107), a crossbeam (106), a truss (105), a movable guide rail (102), a rail trolley (101), an electric hoist (104) and a top hoisting rope; the support column (107) is at a preset distance from the ground, the crossbeam (106) is arranged on the upper surface of the support column (107), and the truss (105) is installed on the crossbeam (106); motor-driven rail trolleys (101) are provided at both ends of the movable guide rail (102), and the rail trolley (101) is connected to the track on the upper surface of the truss; the main part of the movable guide rail (102) is an I-beam structure, and the I-beam structure also has a guide rail capable of loading the rail trolley (101), which adopts a vertically symmetrical structure and can effectively reduce the bending moment on the guide rail; The bottom posture adjustment device (3) is composed of a fixed pulley (302), a power transmission device (301), a posture adjustment turntable (304), a trolley (305), a ground guide rail (306), and a bottom stabilizing rope; the trolley is mounted on the ground guide rail (306), the posture adjustment turntable (304) is mounted on the upper surface of the trolley (305), and the four power transmission devices (301) and the fixed pulley (302) on the upper surface of the posture adjustment turntable (304) are respectively distributed in a circle at an angle of 90 degrees; the power transmission device (301) is composed of a servo motor (401), a manual crank (407), a worm gear reducer (406), a winding drum (402), a winding drum shaft (403) and a bearing seat (404); the two input ends of the worm gear reducer (406) are respectively connected to the servo motor (401) and the manual crank (407); the winding drum shaft (403) is supported by the bearing seat (404); the winding drum (402) and the winding drum shaft (403) are interference fit, thereby achieving synchronous rotation of the winding drum (402) and the winding drum shaft (403); the bottom stabilizing rope is wound around the winding drum (402) and guided by the fixed pulley (302); the worm gear reducer (406) has a self-locking performance, and the winding drum (402) can maintain the current position when the servo motor (401) stops, and the manual crank (407) can realize the manual adjustment function; By independently controlling four power transmission devices (301), the contraction of the pull ropes on the corresponding winding drums (402) is controlled, thereby controlling the pitch and roll movements of the moving platform; the lengths of the four pull ropes connected to the workpiece (2) are kept unchanged, and the rotation of the workpiece (2) around the z-axis is achieved only by the rotation of the attitude adjustment turntable (304) on the trolley (305); the trolley is driven by the top hoisting lifting equipment (1), is connected to the workpiece (2) through the pull ropes, and synchronously moves horizontally on the ground guide rail (306), thereby achieving the azimuth movement of the workpiece (2).

2. The combined new type hoisting platform according to claim 1 is characterized in that: The rail trolley (101) is connected to an electric hoist (104) below, and the electric hoist (104) is connected to the workpiece (2) via a top hoisting rope, thereby performing a vertical lifting function. The rail trolley (101) performs horizontal movement on the movable guide rail (102), and the electric hoist (104) below it is connected to the workpiece (2) via a top hoisting rope, thereby driving the workpiece (2) to perform horizontal movement synchronously.

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