A turning electric hoist assembly capable of automatically adjusting angle

Abstract

The application discloses a kind of automatically adjustable angle's turnover electric hoist assembly, including track, at least two electric running trolleys are installed on the track, the electric running trolley is connected with crossbeam below, two adjustable centering sliding trolleys that can move horizontally relative to it are provided on the crossbeam, electric hoist is provided on the adjustable centering sliding trolley, and between two electric hoists on the same crossbeam is connected with a chain sling;The electric hoist can be automatically adjusted position according to the inclination angle of chain sling, the inclination angle guide pipe is guided tube according to the inclination angle of chain sling and drives adjustable centering sliding trolley synchronous movement, realize that the distance between electric hoist can be made relative displacement, reach the purpose that hoisting angle is automatically adjusted, to reduce chain sling deflection angle makes hoisting and overturning more smooth.

Description

Technical Field

[0001] This invention relates to an automatically adjustable tilting electric hoist assembly, belonging to the field of lifting machinery technology. Background Technology

[0002] In the production workshop, equipment, tooling, molds, and fixtures need to be rotated, either entirely or partially, for assembly, maintenance, and adjustment, especially in casting mold production.

[0003] Suspended tilting machines are widely used because they rely on slings to connect to the suspended object and are not sensitive to the shape of the object. Most use a single-sided, two-point suspension method for tilting, offering advantages such as high versatility and small space requirements. However, during tilting, especially when the distance between the two points changes significantly from 0° to 180°, a greater vertical space is needed to reduce the angle of the slings to achieve the desired tilt.

[0004] Ordinary electric tilting hoists rely on manual adjustment of distance and angle to perform various production lifting tasks. This results in relatively low production efficiency, high labor intensity, and poor safety, making them increasingly unsuitable for modern automated and intelligent assembly line production methods. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an electric hoist assembly with automatic angle adjustment. By using an inclined angle guide tube to drive the self-aligning sliding trolley to move synchronously according to the inclined angle of the hoisting chain, the relative displacement between the electric hoists can be achieved, thereby achieving the purpose of automatic adjustment of the hoisting angle, thereby reducing the deflection angle of the hoisting chain and making hoisting and turning smoother.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] An automatically adjustable tilting electric hoist assembly includes a track, at least two electric trolleys mounted on the track, a crossbeam connected below the electric trolleys, two self-aligning sliding trolleys that can move horizontally relative to the crossbeam, an electric hoist mounted on the self-aligning sliding trolleys, and a chain connecting the two electric hoists on the same crossbeam.

[0008] An inclined angle guide assembly is connected between the self-aligning sliding trolley and the hanging chain. The guide assembly includes an inclined angle transmission rod rotatably connected to the self-aligning sliding trolley, a guide tube fitted on the hanging chain, and a guide tube fixing seat connected between the guide tube and the electric hoist.

[0009] The top of the tilt angle transmission rod is provided with an arc-shaped pawl limiting groove, and the middle position of the upper surface of the pawl limiting groove is an arc structure, and the two sides are symmetrical tilted planes.

[0010] Two sets of four ratchet bars are provided below the crossbeam. The self-aligning sliding trolley is provided with two pawls that can rotate relative to it and are used in conjunction with the corresponding ratchet bars. The pawls are provided with pawl drive shafts that are engaged in the pawl limit grooves.

[0011] Two sets of linkage assemblies are symmetrically arranged between the two self-aligning sliding trolleys on the crossbeam for driving them to move synchronously inward or outward. The linkage assembly includes a first linkage and a second linkage that are rotatably connected. The free end of the second linkage is a gear-shaped structure. The ends of the gear-shaped structures of the two second linkages mesh with each other and are rotatably connected to the crossbeam. The free end of the first linkage is connected to the self-aligning sliding trolley.

[0012] The aforementioned tilting electric hoist assembly with automatically adjustable angle is characterized in that: the free end of the first connecting rod is provided with an eccentric positioning pin.

[0013] The aforementioned automatic angle-adjustable tilting electric hoist assembly is characterized in that: boat-shaped limiting plates are provided at both ends and the middle of the crossbeam, and limit switch groups corresponding to the positions of the boat-shaped limiting plates are respectively provided at both ends of the top of the self-aligning sliding trolley.

[0014] The aforementioned automatic angle-adjustable tilting electric hoist assembly is characterized in that: buffer assemblies are respectively provided at both ends of the self-aligning sliding trolley.

[0015] The aforementioned tilting electric hoist assembly with automatically adjustable angle is characterized in that: a balance spring is provided between the end and the rod of the tilting angle transmission rod and the electric hoist.

[0016] The aforementioned tilting electric hoist assembly with automatically adjustable angle is characterized in that: a sliding groove is provided at the connection between the guide tube fixing seat and the guide tube.

[0017] The aforementioned tilting electric hoist assembly with automatically adjustable angle is characterized in that: the self-aligning sliding trolley is also equipped with a tilt angle detection switch.

[0018] The beneficial effects of this invention are:

[0019] 1. By setting two relatively synchronously movable electric hoists on the crossbeam, the horizontal component force generated by the inclined chain drives the self-aligning sliding trolley connected to the electric hoist to move relative to the crossbeam. The horizontal component force will only disappear when the chain is in a vertical state. This ensures that during the process of lifting and turning products by the electric hoist, the electric hoist can be driven to make corresponding horizontal displacements in real time according to the degree of product turning, so as to compensate for and reduce the tilt angle, reduce the chain deflection angle, and make lifting and turning smoother.

[0020] 2. Through the unique pawl limiting groove structure at the top of the inclined angle transmission rod, when the chain tilts, it drives the inclined angle transmission rod to rotate through the guide tube, causing one of the pawls to rotate and disengage from the ratchet's limit. Under the action of the horizontal component force of the chain, it can move freely in the desired direction. The other pawl remains in the same position and is still limited by the corresponding ratchet, maintaining its one-way limiting function. This ensures that the electric hoist can automatically move in the desired direction under the action of the horizontal component force. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an automatically adjustable tilting electric hoist assembly of the present invention in its intermediate state.

[0022] Figure 2 This is a schematic diagram of the structure of a tilting electric hoist assembly with automatically adjustable angle in the maximum spacing state according to the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of a tilting electric hoist assembly with automatically adjustable angle in the minimum spacing state according to the present invention.

[0024] Figure 4 This is a side view of the tilting electric hoist assembly with automatically adjustable angle of the present invention in its middle state.

[0025] Figure 5 This is a schematic diagram showing the connection between one of the electric hoists in the automatically adjustable tilting electric hoist assembly of the present invention and the tilting angle guide assembly.

[0026] Figure 6 This is a side view of the tilt angle guide component of an automatically adjustable tilting electric hoist assembly according to the present invention.

[0027] Figure 7 This is a schematic diagram of the tilt angle transmission rod of an automatically adjustable tilting electric hoist assembly according to the present invention.

[0028] Figure 8 This is a schematic diagram of the ratchet structure of a flip electric hoist assembly with automatically adjustable angle according to the present invention;

[0029] Figure 9 This is a schematic diagram of the pawl structure of a flip electric hoist assembly with automatically adjustable angle according to the present invention.

[0030] Figure 10 This is a schematic diagram of the flipping process of a flipping electric hoist assembly with automatically adjustable angle according to the present invention. Detailed Implementation

[0031] The present invention will now be further described with reference to the accompanying drawings.

[0032] like Figure 1 As shown, an automatically adjustable tilting electric hoist assembly includes a track 10, at least two electric trolleys 20 mounted on the track 10, a crossbeam 30 connected below each electric trolley 20, two self-aligning sliding trolleys 40 that can move horizontally relative to the crossbeam 30, an electric hoist 50 mounted on each self-aligning sliding trolley 40, and a chain 90 connecting the two electric hoists 50 on the same crossbeam 30; an tilting angle guide assembly 60 connects the self-aligning sliding trolleys 40 and the chain 90, the guide assembly 60 including a tilting angle transmission rod rotatably connected to the self-aligning sliding trolleys 40. 61. A guide tube 65 fitted on the chain 90, and a guide tube fixing seat 66 connecting the guide tube 65 and the electric hoist 50; the top of the inclined angle transmission rod 61 is provided with an arc-shaped pawl limiting groove 611, and the middle position of the upper surface of the pawl limiting groove 611 is an arc-shaped structure 612, and the two sides are symmetrical inclined planes 613; two sets of four ratchet bars 31 are provided below the crossbeam 30, and the self-aligning sliding trolley 40 is provided with two pawls 63 that can rotate relative to it and are used in conjunction with the corresponding ratchet bars 31, and the pawl 63 is provided with a pawl drive shaft 631 that is engaged in the pawl limiting groove 611.

[0033] When it is necessary to flip the workpiece, the two lifting chains 90 are respectively hung on the guide posts on both sides of the workpiece 80. Depending on the width of the workpiece, the length of the lifting chains 90 can be adjusted using the electric hoist 50. If the lifting chains are positioned such that they are on the workpiece... Figure 1 At the position shown, the workpiece can be flipped by gradually adjusting the length of the corresponding lifting chain using an electric hoist.

[0034] During the flipping process, the lifting chain 90 gradually tilts, causing the guide tube 65 mounted on the lifting chain 90 to tilt as well. This causes the tilt angle transmission rod 61, which is fixedly connected to the guide tube 65, to rotate relative to the self-aligning sliding trolley 40. One of the tilted planes 613 of the pawl limiting groove 611 at the top of the tilt angle transmission rod 61 presses down on the corresponding pawl, driving the shaft 631. This causes the corresponding pawl 63 to rotate downwards, breaking free from the constraint of the ratchet bar it engages with. This allows the electric hoists on both sides to move freely in the desired direction, compensating for and reducing the tilt angle, thus narrowing the lifting chain deflection angle and making lifting and flipping smoother. Meanwhile, the other pawl driving the shaft 631 does not undergo any downward pressure due to the arc structure 612. Therefore, the pawl in the opposite direction does not move with the rotation of the tilt angle transmission rod 61, preventing the electric hoist from swaying back and forth due to inertia and causing instability during flipping. It can ensure that the electric hoist automatically adjusts the distance to compensate for the lifting and tilting performance when the chain is tilted. At the same time, the two electric hoists need to have a relative tilt angle to automatically adjust the distance to compensate for the tilt angle. This can prevent the automatic distance adjustment from malfunctioning due to inertial sway during the movement and improve the stability of the system.

[0035] When the electric hoist tilts, it drives the tilt angle guide tube assembly, which will cause the pawl in the same direction to move. The pawl in the opposite direction will not rotate because it has a slot that exceeds the space, ensuring that it can still be engaged with the ratchet and limiting the movement of the self-aligning sliding trolley in that direction.

[0036] To ensure that the two electric hoists on the same crossbeam can move inward or outward synchronously, two sets of connecting rod assemblies 70 are symmetrically arranged between the two self-aligning sliding trolleys 40 on the crossbeam 30 for driving them to move inward or outward synchronously. The connecting rod assembly 70 includes a first connecting rod and a second connecting rod that can be rotatably connected. The free end of the second connecting rod is a gear-shaped structure. The ends of the gear-shaped structures of the two second connecting rods mesh with each other and are rotatably connected to the crossbeam 30 respectively. The free end of the first connecting rod is connected to the self-aligning sliding trolley 40.

[0037] The self-aligning sliding trolleys on the same crossbeam are connected by a connecting rod assembly 70 to achieve relative displacement between the two electric hoists in the same group. When the two electric hoists have different tilt angles, they can compensate for each other's movement, ensuring that their distance from the center is equidistant from the preset position, improving adjustment stability and preventing tipping safety issues caused by a tilted center of gravity. Simultaneously, the connecting rod assembly 70 can also be adjusted individually from the center by adjusting the gear pairing during installation.

[0038] By setting a connecting rod assembly 70 between the self-aligning sliding carriages, it is ensured that the two self-aligning sliding carriages are synchronously linked. Even if the workpiece 80 generates a certain force in a certain direction due to the continuous change of the tilt angle of the electric hoist during the flipping process, the linkage of the connecting rod assembly 70 can compensate for the inertial force and prevent the self-aligning sliding carriage from moving back and forth on the crossbeam due to the inertial force.

[0039] To ensure installation accuracy, an eccentric positioning pin is provided at the free end of the first connecting rod. During assembly, the eccentric position of the eccentric positioning pin can be adjusted as needed to compensate for errors in its installation position, ensuring that the two self-aligning sliding carriages 40 can move synchronously about the center point of the crossbeam as the axis of symmetry. This fine-tuning function not only facilitates product installation and reduces the impact of manufacturing precision on performance, but also provides supplementary step-wise adjustment of the meshing of the synchronously moving local gear connecting rods, meeting differentiated usage requirements for different working conditions, directions, and positions.

[0040] Both ends of the self-aligning sliding trolley 40 are respectively provided with buffer assemblies 43. When the self-aligning sliding trolley 40 moves to the edge of the crossbeam, it is buffered by the buffer assembly 43 to avoid excessive rebound force, which would cause the hoisted workpiece to shake.

[0041] Boat-shaped limiting plates 32 are provided at both ends and in the middle of the crossbeam 30. Limit switch groups 33 corresponding to the positions of the boat-shaped limiting plates 32 are respectively provided at both ends of the top of the self-aligning sliding trolley 40. The limit switch groups 33 can detect when the self-aligning sliding trolley 40 has moved to its limit position and can react accordingly based on the settings.

[0042] A balance spring 68 is provided between the end and the rod of the tilt angle transmission rod 61 and the electric hoist 50. By providing two balance springs 68, it is ensured that the tilt angle transmission rod 61 is always in a vertical state in the initial state during installation. Moreover, when the hoist is unloaded and unbalanced, the balance springs can quickly return the tilt angle guide tube assembly to its correct position.

[0043] A sliding groove 67 is provided at the connection between the guide tube fixing seat 66 and the guide tube 65, so that the guide tube 65 can slide smoothly against the guide tube fixing seat 66 when it tilts.

[0044] The self-aligning sliding trolley 40 is also equipped with a tilt angle detection switch 42. When the tilt angle of the electric hoist reaches the preset position, the switch will feed back to the control system and will use different warning sounds after a set time. When the feedback signals from the tilt angle detection switch at the symmetrical position are inconsistent, it will use another different warning sound or stop using the hoist after a set time to ensure safety and reliability.

[0045] In summary, the present invention provides an automatically adjustable tilting electric hoist assembly. By using an inclined angle guide tube to drive the self-aligning sliding trolley to move synchronously according to the tilt angle of the lifting chain, the relative displacement between the electric hoists can be achieved, thereby realizing the purpose of automatic adjustment of the lifting angle, thus reducing the deflection angle of the lifting chain and making lifting and tilting smoother.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A tilting electric hoist assembly with automatically adjustable angle, characterized in that: Includes a track (10), at least two electric trolleys (20) mounted on the track (10), a crossbeam (30) connected below the electric trolleys (20), two self-aligning sliding trolleys (40) that can move horizontally relative to the crossbeam (30) are provided on the crossbeam (30), an electric hoist (50) is provided on the self-aligning sliding trolley (40), and a chain (90) is connected between the two electric hoists (50) on the same crossbeam (30). An inclined angle guide assembly (60) is connected between the self-aligning sliding trolley (40) and the chain hoist (90). The guide assembly (60) includes an inclined angle transmission rod (61) rotatably connected to the self-aligning sliding trolley (40), a guide tube (65) fitted on the chain hoist (90), and a guide tube fixing seat (66) connected between the guide tube (65) and the electric hoist (50). The top of the tilt angle transmission rod (61) is provided with an arc-shaped pawl limiting groove (611), and the middle position of the upper surface of the pawl limiting groove (611) is an arc-shaped structure (612), and the two sides are symmetrical tilted planes (613). Two sets of four ratchet bars (31) are provided below the crossbeam (30). The self-aligning sliding trolley (40) is provided with two pawls (63) that can rotate relative to it and are used in conjunction with the corresponding ratchet bars (31). The pawls (63) are provided with pawl drive shafts (631) that are engaged in the pawl limit groove (611). Two sets of linkage assemblies (70) are symmetrically arranged between the two self-aligning sliding trolleys (40) on the crossbeam (30) for driving them to move synchronously inward or outward. The linkage assembly (70) includes a first linkage and a second linkage that can be rotatably connected. The free end of the second linkage is a gear-shaped structure. The ends of the gear-shaped structures of the two second linkages mesh with each other and are rotatably connected to the crossbeam (30). The free end of the first linkage is connected to the self-aligning sliding trolley (40). The free end of the first connecting rod is provided with an eccentric positioning pin; A balance spring (68) is provided between the end and the rod of the tilt angle transmission rod (61) and the electric hoist (50). A sliding groove (67) is provided at the connection between the guide tube fixing seat (66) and the guide tube (65).

2. The automatically adjustable angle tilting electric hoist assembly according to claim 1, characterized in that: The crossbeam (30) is provided with boat-shaped limit plates (32) at both ends and in the middle. The top ends of the self-aligning sliding trolley (40) are respectively provided with limit switch groups (33) corresponding to the positions of the boat-shaped limit plates (32).

3. The automatically adjustable angle tilting electric hoist assembly according to claim 2, characterized in that: The self-aligning sliding trolley (40) is also provided with buffer assemblies (43) at both ends.

4. The automatically adjustable angle tilting electric hoist assembly according to claim 1, characterized in that: The self-aligning sliding trolley (40) is also equipped with a tilt angle detection switch (42).

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