Rigid-flexible cross-bracing synchronous lifting mechanism

Abstract

The present invention provides a rigid-flexible integrated cross-bracing synchronous lifting mechanism, which is provided with a lift fixing frame, a synchronous lift, a cross-bracing sling and a cross-bracing guide mechanism, wherein the synchronous lift is fixedly mounted on the lift fixing frame, the load shaft of the synchronous lift is connected to the cross-bracing sling, the cross-bracing guide mechanism is mounted on the lower end surface of the lift fixing frame, and under the action of the synchronous lift, the cross-bracing sling moves up and down along the cross-bracing guide mechanism. When the cylindrical surface of the electric permanent magnet lifting base slides tangentially with the arc-shaped guide groove of the cross-bracing guide wheel, the cross-bracing sling and the cross-bracing guide mechanism form a limiting structure in the horizontal direction, and the electric permanent magnet can only move vertically, thereby ensuring the stability of the load operation and avoiding damage caused by load shaking caused by the use of a hook; when the conical surface of the electric permanent magnet lifting base descends to the cross-bracing guide wheel, the electric permanent magnet can rotate and adjust in the horizontal direction with the twisting of the lifting ring, thereby meeting the requirement of the final precise positioning of the load.

Description

Technical Field

[0001] The present invention relates to a heavy truck battery replacement project in the field of new energy battery replacement technology, and in particular to a rigid-flexible integrated cross-braced synchronous lifting mechanism that requires rigid-flexible alternating conversion during the lifting process. Background Art

[0002] New energy vehicles that use power batteries as driving energy have great advantages of being green and environmentally friendly. Due to the large power consumption of heavy-duty trucks, the economy and promotion of new energy heavy-duty trucks are restricted, so battery-swap heavy-duty trucks came into being.

[0003] At present, in the field of battery replacement for electric heavy trucks, the battery box adopts a fast and fully automatic battery replacement mode. In a fixed or mobile battery replacement station, a special battery replacement device is used to remove the discharged battery box and put it on the charging station, and the charged battery box is installed on the electric heavy truck. During the battery replacement process, the battery box is usually hoisted by using a hook to hook the battery box, and the hoisting fixture uses a winding wire rope or a lifting chain to achieve up and down movement. This method of hoisting the battery box requires precise positioning between the hook and the lifting ring of the battery box. The hoisting fixture is complex, and the battery box is prone to shaking and unstable when moving up and down. The displacement friction can easily cause damage to the battery box and the hoisting fixture, affecting their service life. Summary of the invention

[0004] The purpose of the present invention is to solve the deficiencies of the above-mentioned technology and to provide a rigid-flexible integrated cross-braced synchronous lifting mechanism, which can not only ensure the stable lifting of the battery box, but also meet the flexible and precise positioning requirements of the battery box during the replacement of the battery box. Compared with the traditional lifting method, the lifting height is small, which can greatly improve the production efficiency.

[0005] To this end, the present invention provides a rigid-flexible cross-bracing synchronous lifting mechanism, which is provided with an elevator fixing frame, a synchronous elevator, a cross-bracing sling and a cross-bracing guide mechanism. The synchronous elevator is fixedly installed on the elevator fixing frame, the load shaft of the synchronous elevator is connected to the cross-bracing sling, and the cross-bracing guide mechanism is installed on the lower end surface of the elevator fixing frame. Under the action of the synchronous elevator, the cross-bracing sling moves up and down along the cross-bracing guide mechanism.

[0006] Preferably, the cross-bracing sling comprises a synchronous lifting cross arm, a flexible lifting assembly, an electric permanent magnet lifting base and an electric permanent magnet, the upper end of the synchronous lifting cross arm is connected to the load shaft of the synchronous lifter, and the lower end of the synchronous lifting cross arm is connected to the upper end of the flexible lifting assembly; two groups of flexible lifting assemblies are provided, which are symmetrically installed below the synchronous lifting cross arm; the lower end of the flexible lifting assembly is connected to an electric permanent magnet lifting base, the upper part of the electric permanent magnet lifting base is a columnar hollow structure, the flexible lifting assembly is fixed inside the hollow structure of the electric permanent magnet lifting base, and the electric permanent magnet is bolted to the lower end of the electric permanent magnet lifting base;

[0007] The cross-brace guide mechanism includes a cross-brace fixing frame and a cross-brace guide wheel. The cross-brace fixing frame is arranged between two flexible lifting components, and its upper end passes through the synchronous lifting cross arm and is fixedly connected to the bottom surface of the elevator fixing frame. A cross-brace guide wheel is respectively provided on both sides of the lower end of the cross-brace fixing frame; the cross-brace guide wheel is provided with an arc-shaped guide groove, and the arc-shaped guide groove is adapted to be rollingly connected with the cylindrical surface of the electric permanent magnetic lifting base. A conical surface is also extended from the upper edge of the cylindrical surface of the electric permanent magnetic lifting base, and the cross-sectional area of ​​the conical surface is smaller than the cross-sectional area of ​​the cylindrical surface.

[0008] Preferably, when the load shaft of the synchronous elevator drives the cylindrical surface of the electric permanent magnet lifting base to move up and down along the cross-brace guide wheel, the cross-brace guide mechanism limits the cross-brace hanger in the horizontal direction, and the electric permanent magnet moves vertically; when the conical surface of the electric permanent magnet lifting base descends to the cross-brace guide wheel, the cross-brace hanger is released from the horizontal limit by the cross-brace guide mechanism, and due to the presence of the flexible lifting assembly, the electric permanent magnet can rotate in the horizontal direction.

[0009] Preferably, both sides of the lower end of the cross-bracing fixing frame are connected to the cross-bracing guide wheel through a cross-bracing guide wheel ear plate and a cross-bracing guide wheel support, the bottom surface of the cross-bracing guide wheel support is fixedly connected to the cross-bracing fixing frame, the upper end of the cross-bracing guide wheel support is connected to the cross-bracing guide wheel ear plate, and the cross-bracing guide wheel ear plate is connected to the central axis of the cross-bracing guide wheel.

[0010] Preferably, the flexible lifting assembly can be a soft cable or a wire rope or a lifting ring assembly.

[0011] Preferably, the lifting ring assembly is composed of a lifting ring and a serrated ring connected in series.

[0012] The present invention provides a rigid-flexible integrated cross-bracing synchronous lifting mechanism, which has the following beneficial effects:

[0013] (1) The present invention utilizes the cylindrical surface of the electro-permanent magnet lifting base and the arc-shaped guide groove of the cross-bracing guide wheel to adapt and roll with each other, so that the cross-bracing hanger and the cross-bracing guide mechanism form a limiting structure in the horizontal direction. The cross-bracing hanger, the electro-permanent magnet and the load can only move vertically, thereby ensuring the stability of the load's up and down movement and avoiding load shaking and friction damage caused by the use of a hook.

[0014] When the conical surface of the electro-permanent magnet lifting base descends to the cross-bracing guide wheel, the horizontal limit relationship between the cross-bracing sling and the cross-bracing guide mechanism is released, and the electro-permanent magnet can be twisted with the flexible lifting ring assembly to achieve horizontal rotation adjustment, meeting the requirement of precise positioning when lowering the load.

[0015] (2) The present invention uses an electro-permanent magnet instead of a hook to lift the load. On the one hand, precise positioning is not required during lifting, which is simple and convenient. On the other hand, after lifting, the load and the electro-permanent magnet remain in a fixed state, and no shaking will occur, resulting in displacement friction and affecting its service life.

[0016] In addition, the present invention adopts an electro-permanent magnet hook load, which has a simple structure and reduces production costs. The electro-permanent magnet does not require electricity when working, and power failure or power supply line failure will not cause it to lose its working power. It is safe, reliable and energy-saving; no special maintenance is required, and the service life of the entire device is correspondingly extended.

[0017] In summary, the present invention utilizes the cylindrical surface and conical surface of the electric permanent magnet lifting base in conjunction with the cross-bracing guide wheel to achieve horizontal limiting and releasing of the electric permanent magnet, which can meet both the requirements of stable lifting and lowering of the load and the need for accurate positioning of the lowered load. In addition, the present invention utilizes electric permanent magnets to lift the load, which has a simple structure, is convenient and fast, does not require hook-type precise positioning, and has a small lifting height compared to traditional lifting methods, which can greatly improve production efficiency and can be widely used in the field of new energy battery replacement technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the front view of the present invention;

[0019] Figure 2 It is a structural schematic diagram of a stereogram of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the cross brace hanger of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the assembly of the flexible lifting assembly and the electric permanent magnetic lifting base of the present invention;

[0022] Figure 5 It is a structural schematic diagram of the cross brace guide mechanism of the present invention;

[0023] Figure 6 It is a structural schematic diagram of the cross brace fixing frame of the present invention;

[0024] Figure 7 It is a structural schematic diagram of the cross brace guide wheel assembly of the present invention.

[0025] Markings in the figure: 1. Elevator fixing frame, 2. Synchronous elevator, 3. Cross brace sling, 31. Synchronous lifting cross arm, 32. Flexible lifting assembly, 33. Electric permanent magnet lifting base, 331. Cylindrical surface, 332. Conical surface, 34. Electric permanent magnet, 35. Lifting connection seat, 4. Cross brace guide mechanism, 41. Cross brace fixing frame, 42. Cross brace guide wheel, 421. Arc guide groove, 43. Cross brace guide wheel ear plate, 44. Cross brace guide wheel support. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments to help understand the content of the present invention. The methods used in the present invention are all conventional methods unless otherwise specified; the raw materials and devices used are all conventional commercial products unless otherwise specified.

[0027] Depend on Figure 1-2 As shown, the present invention provides a rigid-flexible integrated cross-bracing synchronous lifting mechanism, which is provided with a lift fixing frame 1, a synchronous lift 2, a cross-bracing sling 3 and a cross-bracing guide mechanism 4. The synchronous lift 2 is fixedly mounted on the lift fixing frame 1, and the cross-bracing sling 3 is arranged below the lift fixing frame 1, and its upper end is connected to the load shaft of the synchronous lift 2. The cross-bracing guide mechanism 4 is installed on the lower end surface of the lift fixing frame 1. Under the action of the synchronous lift 2, the cross-bracing sling 3 moves up and down along the cross-bracing guide mechanism 4 to lift the load.

[0028] Depend on Figure 3-4 As shown, the cross brace sling 3 includes a synchronous lifting cross arm 31, a flexible lifting assembly 32, an electric permanent magnet lifting base 33 and an electric permanent magnet 34. The upper end of the synchronous lifting cross arm 31 is connected to the load shaft of the synchronous lift 2, and the lower end of the synchronous lifting cross arm 31 is connected to the upper end of the flexible lifting assembly 32 through a lifting connection seat 35. The flexible lifting assembly 32 is provided with two groups, which are symmetrically installed below the synchronous lifting cross arm 31. Further, the flexible lifting assembly 32 can be a soft rope, a wire rope or a lifting ring assembly. In this embodiment, the lifting ring assembly is composed of a lifting ring and a serrated ring connected in series to meet the rotation displacement requirements of the lifting load in the horizontal direction. The lower end of the flexible lifting assembly 32 is connected with an electric permanent magnet lifting base 33. The upper part of the electric permanent magnet lifting base 33 is a columnar hollow structure. The flexible lifting assembly 32 is fixed inside the hollow structure of the electric permanent magnet lifting base 33, and the electric permanent magnet 34 is bolted to the lower end of the electric permanent magnet lifting base 33. A cylindrical surface 331 is provided at the lower part of the columnar hollow structure of the permanent magnetic lifting base 33, and a conical surface 332 is extended from the upper edge of the cylindrical surface 331. The cross-sectional area of ​​the conical surface 332 is smaller than the cross-sectional area of ​​the cylindrical surface 331. The setting of the cylindrical surface 331 and the conical surface 332 realizes the horizontal limitation of the lifting load.

[0029] The lower end of the permanent magnet lifting base 33 is connected with a permanent magnet 34, which is used to lift the load. The permanent magnet 34 is used to lift the load instead of the hook. On the one hand, it does not require precise positioning during lifting, which is simple and convenient. On the other hand, after lifting, the load and the permanent magnet 34 remain in a fixed state, and there will be no shaking, displacement friction, and affect its life. In addition, the permanent magnet 34 is only connected to an instantaneous power supply when the charging and demagnetization states are switched. No electricity is required during the working process, and power failure or power supply line failure will not cause it to lose its working power. It is safe, reliable and energy-saving. There are no moving parts inside the permanent magnet 34, and the overall strength is high, reliable and durable, and no special maintenance is required, which correspondingly extends the service life of the entire device.

[0030] Depend on Figure 5 to Figure 7 As shown, the cross brace guide mechanism 4 includes a cross brace fixing frame 41 and a cross brace guide wheel 42. The cross brace fixing frame 41 is arranged between the two flexible lifting components 32, and its upper end passes through the through hole in the middle of the synchronous lifting cross arm 31 and is fixedly connected to the bottom surface of the elevator fixing frame 1. A cross brace guide wheel 42 is respectively provided on both sides of the lower end of the cross brace fixing frame 41, and the cross brace guide wheel 42 is connected to the lower end of the cross brace fixing frame 41 through a cross brace guide wheel ear plate 43 and a cross brace guide wheel support 44. Specifically, the bottom surface of the cross brace guide wheel support 44 is fixedly connected to the cross brace fixing frame 41, and the upper end of the cross brace guide wheel support 44 is connected to the cross brace guide wheel ear plate 43, and the cross brace guide wheel ear plate 43 is connected to the central axis of the cross brace guide wheel 42, and the cross brace guide wheel 42 is rotatably connected to the central axis. The outer periphery of the cross brace guide wheel 42 is provided with an arc guide groove 421, and the arc guide groove 421 is adapted to roll with the cylindrical surface 331 of the permanent magnetic lifting base 33.

[0031] When the load shaft of the synchronous lifter 2 drives the cylindrical surface 331 of the electric permanent magnet lifting base 33 to move up and down along the cross-bracing guide wheel 42, the cylindrical surface 331 of the electric permanent magnet lifting base 33 is tangentially rollingly connected with the arc-shaped guide groove 421 of the cross-bracing guide wheel 42, and the cross-bracing guide mechanism 4 limits the cross-bracing hanger 3 in the horizontal direction. Under the action of the synchronous lifter 2, the cross-bracing hanger 3 can only perform vertical lifting and lowering movements, and the electric permanent magnet 34 fixedly connected to the cross-bracing hanger 3 and the load attracted by the electric permanent magnet 34 can only perform vertical movements. When the conical surface 332 of the electric permanent magnet lifting base 33 descends to the cross brace guide wheel 42, because the radius of the conical surface 332 becomes smaller, the conical surface 332 of the electric permanent magnet lifting base 33 is separated from the cross brace guide wheel 42, and the cross brace hanger 3 is released from the horizontal limit of the cross brace guide mechanism 4. Since the electric permanent magnet 34 and the synchronous lifting cross arm 31 are flexibly connected by a lifting ring assembly, the electric permanent magnet 34 can be rotated and fine-tuned in the horizontal direction to meet the final precise positioning requirements of the lowered load.

[0032] The working process of the present invention is:

[0033] First, the load is sucked and grabbed by the electric permanent magnet 34, and moved to the position where it needs to be placed, and the synchronous lift 2 is started, and the load moves downward with the cross-bracing sling 3. During the downward process, the cylindrical surface 331 of the electric permanent magnet lifting base 33 rolls tangentially with the arc guide groove 421 of the cross-bracing guide wheel 42, and the cross-bracing sling 3 and the cross-bracing guide mechanism 4 form a limiting structure in the horizontal direction. The cross-bracing sling 3, the electric permanent magnet 34, and the load can only move vertically, which ensures the stability of the load operation and avoids the use of hooks to cause load shaking and friction damage. When the conical surface 332 of the electric permanent magnet lifting base 33 moves downward to the cross-bracing guide wheel 42, the conical surface 332 of the electric permanent magnet lifting base 33 is separated from the cross-bracing guide wheel 42, and the horizontal limiting relationship is released. Since the electric permanent magnet 34 and the synchronous lifting cross arm 31 are flexibly connected by a lifting ring assembly, the electric permanent magnet 34 can be rotated and adjusted in the horizontal direction with the twisting of the lifting ring, meeting the requirements for the final precise positioning of the lowered load.

[0034] The present invention utilizes the cylindrical surface 331 and the conical surface 332 of the electric permanent magnet lifting base 33 to cooperate with the cross brace guide wheel 42 to achieve the horizontal limit and release of the electric permanent magnet 34, which can meet the requirements of stable lifting and lowering of the load and the need for accurate positioning of the load. In addition, the present invention utilizes the electric permanent magnet 34 to lift the load, which has a simple structure, is convenient and fast, does not require hook-type precise positioning, and has a small lifting height compared to traditional lifting methods, which can greatly improve production efficiency and can be widely used in the field of new energy battery replacement technology.

[0035] In the description of the present invention, it is necessary to understand that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inside", "outside", "back", "middle", etc., indicating the orientation or position relationship are based on the orientation or position 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 a limitation on the present invention.

[0036] However, what is described above is only a specific embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the scope of protection of the present invention should still fall within the scope covered by the claims of the present invention.

Claims

1. Rigid-flexible cross-bracing synchronous lifting mechanism, characterized in that: It is provided with an elevator fixing frame, a synchronous elevator, a cross brace hanger and a cross brace guide mechanism, wherein the synchronous elevator is fixedly mounted on the elevator fixing frame, the load shaft of the synchronous elevator is connected to the cross brace hanger, the cross brace guide mechanism is mounted on the lower end surface of the elevator fixing frame, and under the action of the synchronous elevator, the cross brace hanger moves up and down along the cross brace guide mechanism; The cross-bracing sling comprises a synchronous lifting cross arm, a flexible lifting assembly, an electric permanent magnet lifting base and an electric permanent magnet, the upper end of the synchronous lifting cross arm is connected to the load shaft of the synchronous lifter, and the lower end of the synchronous lifting cross arm is connected to the upper end of the flexible lifting assembly; the flexible lifting assembly is provided with two groups, which are symmetrically installed below the synchronous lifting cross arm; the lower end of the flexible lifting assembly is connected with the electric permanent magnet lifting base, the upper part of the electric permanent magnet lifting base is a columnar hollow structure, the flexible lifting assembly is fixed inside the hollow structure of the electric permanent magnet lifting base, and the electric permanent magnet is bolted to the lower end of the electric permanent magnet lifting base; The cross brace guide mechanism comprises a cross brace fixing frame and a cross brace guide wheel, wherein the cross brace fixing frame is arranged between two flexible lifting components, and the upper end thereof passes through the synchronous lifting cross arm and is fixedly connected to the bottom surface of the lifting machine fixing frame, and a cross brace guide wheel is respectively arranged on both sides of the lower end of the cross brace fixing frame; the cross brace guide wheel is provided with an arc guide groove, and the arc guide groove is adapted to be rollingly connected with the cylindrical surface of the electric permanent magnet lifting base, and a conical surface is also extended from the upper edge of the cylindrical surface of the electric permanent magnet lifting base, and the cross-sectional area of ​​the conical surface is smaller than the cross-sectional area of ​​the cylindrical surface; Both sides of the lower end of the cross brace fixing frame are connected to the cross brace guide wheel through a cross brace guide wheel ear plate and a cross brace guide wheel support, the bottom surface of the cross brace guide wheel support is fixedly connected to the cross brace fixing frame, the upper end of the cross brace guide wheel support is connected to the cross brace guide wheel ear plate, and the cross brace guide wheel ear plate is connected to the central axis of the cross brace guide wheel; The flexible lifting component is a soft cable or a steel wire rope or a lifting ring component.

2. The rigid-flexible cross-bracing synchronous lifting mechanism according to claim 1 is characterized in that: When the load shaft of the synchronous elevator drives the cylindrical surface of the electro-permanent magnet lifting base to move up and down along the cross-bracing guide wheel, the cross-bracing guide mechanism limits the cross-bracing hanger in the horizontal direction, and the electro-permanent magnet moves vertically; when the conical surface of the electro-permanent magnet lifting base descends to the cross-bracing guide wheel, the cross-bracing hanger is released from the horizontal limit by the cross-bracing guide mechanism, and due to the presence of the flexible lifting assembly, the electro-permanent magnet can rotate in the horizontal direction.

3. The rigid-flexible cross-bracing synchronous lifting mechanism according to claim 1 is characterized in that: The lifting ring assembly is composed of a lifting ring and a sawtooth ring connected in series.

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