A single-person operation hoist for unloading body-in-white assemblies
By designing a single-person operated body-in-white assembly lifting device and using a mechanical linkage mechanism to achieve synchronous locking and releasing, the problems of low lifting efficiency, safety risks, and low positioning accuracy in existing technologies have been solved, thereby improving operational stability and equipment lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI KAMAYUN INTELLIGENT CO LTD
- Filing Date
- 2025-09-19
- Publication Date
- 2026-07-31
AI Technical Summary
The existing lifting equipment for body-in-white assembly line is mostly operated by two people or is electric, which has problems such as low efficiency, safety risks, high cost, complex structure, low positioning accuracy and lifting interference.
Design a single-person operation lifting device for unloading body-in-white assemblies. It adopts a mechanical linkage mechanism, including a locking mechanism and a synchronization mechanism, to ensure one-way locking and release of the boom, achieve precise synchronous lifting and lowering of the two-sided lifting boom, reduce friction and improve operational stability.
It enables efficient single-person operation, reduces manpower requirements, avoids hoisting interference, improves safety and equipment lifespan, and ensures labor-saving operation and smooth running.
Smart Images
Figure CN224577868U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automobile manufacturing technology, specifically a single-person operation lifting device for unloading a body-in-white assembly. Background Technology
[0002] Currently, the production of body-in-white assemblies mostly utilizes two-person operated lifting devices or electric lifting devices. The two-person collaborative operation mode is not only inefficient but also presents coordination difficulties and safety risks. While electric lifting devices reduce the burden on manpower, they face problems such as high cost, complex structure, and inconvenient maintenance, and are limited by the constraints of electric drive, resulting in insufficient flexibility. Furthermore, the limiting mechanisms of existing lifting devices mostly use pins or manual locking devices, which suffer from cumbersome operation and low positioning accuracy. During lifting and release, they are prone to interference with the vehicle body, leading to damage to components or product surfaces. Utility Model Content
[0003] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a single-person operation lifting device for unloading body-in-white assemblies, enabling efficient single-person operation and significantly reducing manpower requirements and coordination risks associated with multi-person collaboration; providing a fast and reliable one-way locking and releasing mechanism to effectively prevent interference between the lifting device and the body-in-white during lifting and release; designing a mechanical linkage mechanism to ensure precise synchronous lifting of both lifting arms, thereby improving operational stability and safety; and comprehensively reducing motion friction to ensure labor-saving operation, smooth running, and extended equipment service life.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a single-person operation lifting device for a body-in-white assembly, comprising a lifting beam and two oppositely arranged booms, and further comprising a locking mechanism and a synchronization mechanism; the upper ends of the two booms are respectively hinged to the two ends of the lifting beam via a first rotating shaft; the locking mechanism is disposed on one side of one boom and is used to lock the rotation angle of that boom, comprising a ratchet disc, a connecting seat, a pawl, a reset unit, and a control unit; the ratchet disc is fixedly disposed at the end of the lifting beam, one end of the connecting seat is connected to the boom, and the other end of the connecting seat is hinged to the pawl via a hinge shaft; the two ends of the reset unit are respectively hinged to the boom and the pawl, and are used to apply an elastic force to the pawl so that the pawl engages with the ratchet disc; the control unit is connected to the pawl and is used to apply a pulling force to the pawl so that the pawl separates from the ratchet disc; the two ends of the synchronization mechanism are respectively connected to the two booms to realize the synchronous movement of the two booms.
[0005] Based on the above technical solution, the ratchet disc includes a fan-shaped plate, and the arc-shaped edge of the plate is provided with a number of slots in sequence; when the boom flips upward, the pawl is subjected to force and slides along the slot and slides into the next slot in sequence; when the boom flips downward, the pawl engages with the slot and prevents the boom from rotating.
[0006] Based on the above technical solution, the head of the pawl is provided with a hook, and the tail of the pawl is bent outward to form a bent part.
[0007] Based on the above technical solution, the reset unit includes a reset spring, the two ends of which are connected to the boom and the pawl respectively through a mounting base, and the connection point between the mounting base and the pawl is located below the hinge shaft.
[0008] Based on the above technical solution, the control unit includes a handbrake lever, which is installed at the lower end of the boom and connected to the pawl via a pull rope / rod.
[0009] Based on the above technical solution, two sets of ratchet disc, connecting seat, pawl, and reset unit are arranged opposite each other, and the tails of the two pawls are connected by a connecting rod, which is also connected to the control unit.
[0010] Based on the above technical solution, the synchronization mechanism includes a first flip plate and two second flip plates; the middle part of the first flip plate is hinged to the middle part of the lifting beam through a second rotating shaft, and the two ends of the first flip plate are respectively hinged to one end of the two second flip plates through a synchronization rod, and the other end of the two second flip plates is respectively fixedly connected to the upper end of the corresponding boom.
[0011] Based on the above technical solution, the two ends of the synchronizing rod are respectively hinged to the corresponding first and second flip plates via U-shaped joints.
[0012] Based on the above technical solution, the lifting beam includes two parallel beams, and a number of connecting beams are provided between the two beams; the synchronization mechanism is located between the two beams.
[0013] Based on the above technical solution, a support frame is provided at the lower end of the boom, and a support block adapted to the workpiece is provided on the support frame.
[0014] The beneficial effects of this utility model are as follows: This invention enables efficient single-person operation, significantly reducing manpower requirements and coordination risks associated with multi-person collaboration; it provides a fast and reliable one-way locking and releasing mechanism to effectively prevent interference between the lifting equipment and the vehicle body during lifting and releasing; it designs a mechanical linkage mechanism to ensure precise synchronous lifting of both lifting arms, thereby improving operational stability and safety; and by comprehensively reducing motion friction, it ensures effortless operation, smooth running, and extended equipment service life. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the single-person operation lifting device for the body-in-white assembly in this embodiment of the present invention; Figure 2This is a schematic diagram of the synchronization mechanism in an embodiment of the present utility model; Figure 3 This is a schematic diagram of the locking mechanism in an embodiment of the present invention; Figure 4 This is a schematic diagram of the locking mechanism in an embodiment of this utility model.
[0016] Figure label: 1-Lifting beam; 11-First pivot; 12-Beam body; 13-Connecting beam; 2-Boom; 21-Support frame; 22-Support block; 3-Locking mechanism; 31-Ratchet disc; 311-Plate body; 312-Slot; 32-Pawl; 321-Hook; 322-Bending part; 33-Connecting seat; 34-Hinge; 35-Reset unit; 351-Reset spring; 352-Mounting seat; 36-Handbrake lever; 37-Pull rope / rod; 38-Connecting rod; 4-Synchronization mechanism; 41-First flip plate; 42-Second flip plate; 43-Second rotating shaft; 44-Synchronization rod; 45-U-shaped connector. Detailed Implementation
[0017] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.
[0018] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.
[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.
[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0021] In this utility model, unless otherwise specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "below," and "over" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Above," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0022] The following description, in conjunction with the accompanying drawings, further illustrates specific embodiments of the present invention, making the technical solution and beneficial effects of the present invention clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.
[0023] See Figures 1-3 As shown, this utility model embodiment provides a single-person operation lifting device for unloading a body-in-white assembly, including a lifting beam 1 and two oppositely arranged booms 2, as well as a locking mechanism 3 and a synchronization mechanism 4; the upper ends of the two booms 2 are respectively hinged to the two ends of the lifting beam 1 via a first rotating shaft 11; specifically, the lifting beam 1 includes two parallel beams 12, and a plurality of connecting beams 13 are arranged between the two beams 12; the synchronization mechanism 4 is located between the two beams 12. A support frame 21 is provided at the lower end of the boom 2, and a support block 22 adapted to the workpiece is provided on the support frame 21.
[0024] See Figure 3 and Figure 4As shown, the locking mechanism 3 is located on one side of one of the booms 2, used to lock the rotation angle of the boom 2. It includes a ratchet disc 31, a connecting seat 33, a pawl 32, a reset unit 35, and a control unit. The ratchet disc 31 is fixedly mounted on the end of the boom 1. One end of the connecting seat 33 is connected to the boom 2, and the other end of the connecting seat 33 is hinged to the pawl 32 via a hinge pin 34. The two ends of the reset unit 35 are respectively hinged to the boom 2 and the pawl 32, used to apply an elastic force to the pawl 32, causing the pawl 32 to engage with the boom 2. The ratchet disc 31 engages with the pawl 32; the control unit is connected to the pawl 32 and applies a pulling force to the pawl 32, causing the pawl 32 to separate from the ratchet disc 31. Specifically, the ratchet disc 31 includes a fan-shaped plate 311, and the arc-shaped edge of the plate 311 is provided with a number of slots 312 in sequence. When the boom 2 flips upward, the pawl 32 is subjected to force and slides along the slots 312 and slides into the next slot 312 in sequence. When the boom 2 flips downward, the pawl 32 engages with the slots 312, preventing the boom 2 from rotating. The head of the pawl 32 is provided with a hook 321, and the tail of the pawl 32 is bent outward to form a bent portion 322. The reset unit 35 includes a reset spring 351, the two ends of which are connected to the boom 2 and the pawl 32 respectively through the mounting base 352, and the connection point between the mounting base 352 and the pawl 32 is located below the hinge shaft 34. The control unit includes a handbrake lever 36, which is mounted on the lower end of the boom 2 and connected to the pawl 32 via a pull rope / rod 37. In this embodiment, two sets of ratchet discs 31, connecting seats 33, pawls 32, and reset units 35 are arranged opposite each other, and the tails of the two pawls 32 are connected by a connecting rod 38, which is also connected to the control unit. Squeezing the handbrake lever forces the pawl to disengage from the ratchet teeth through a linkage mechanism, thus releasing the lock. After the lock is released, the boom can be raised freely. Upon reaching the target position, the pawl automatically rebounds under the action of the reset spring, engaging with the ratchet teeth to complete the lock, eliminating the need for manual intervention and effectively preventing interference caused by the lifting device falling back.
[0025] See Figure 2 As shown, the two ends of the synchronization mechanism 4 are respectively connected to the two booms 2 to achieve synchronous movement of the two booms 2. Specifically, the synchronization mechanism 4 includes a first tilting plate 41 and two second tilting plates 42; the middle part of the first tilting plate 41 is hinged to the middle part of the lifting beam 1 through a second rotating shaft 43, and the two ends of the first tilting plate 41 are respectively hinged to one end of the two second tilting plates 42 through a synchronization rod 44, and the other ends of the two second tilting plates 42 are respectively fixedly connected to the upper end of the corresponding boom 2. The two ends of the synchronization rod 44 are respectively hinged to the corresponding first tilting plate 41 and second tilting plate 42 through U-shaped joints 45.
[0026] The working principle of this utility model is as follows: Preparation and Release Phase: The operator engages the handbrake lever, which forces the pawl to disengage from the ratchet disc via the transmission mechanism, releasing the unidirectional rotation limit on the lifting boom. At this point, the operator can pull the lifting boom down to bring it into the body-in-white lifting point.
[0027] Lifting and Locking Phase: After the lifting equipment is installed, the operator raises the lifting boom. At this time, the pawl can slide on the back of the ratchet teeth and make a "click" sound (it bounces up and down continuously under the action of the return spring). The lifting boom can move freely upward without obstruction. When the lifting boom is raised to the predetermined height, no operation is required. The pawl will automatically engage with the corresponding ratchet teeth under the action of the return spring, achieving automatic locking and reliably preventing the lifting boom from accidentally falling back and interfering with the vehicle body.
[0028] Synchronous motion: During lifting or lowering, since the right lifting arm is rigidly connected to the left lifting arm through a synchronous linkage mechanism, the active movement of the right arm will force the left arm to make a completely synchronized mirror motion, ensuring that the body-in-white is always lifted in a balanced manner.
[0029] In the description of this specification, references to terms such as "an embodiment," "preferred," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. Illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0030] This utility model is not limited to the above-described embodiments. For those skilled in the art, various improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model. Contents not described in detail in this specification are prior art known to those skilled in the art.
Claims
1. A body-in-white assembly single-person operation off-line lifting device, comprising a lifting beam (1) and two oppositely arranged lifting arms (2), characterized in that: It also includes a locking mechanism (3) and a synchronization mechanism (4); The upper ends of the two booms (2) are respectively hinged to the two ends of the lifting beam (1) through the first pivot (11); The locking mechanism (3) is located on one side of one of the booms (2) and is used to lock the rotation angle of the boom (2). It includes a ratchet disc (31), a connecting seat (33), a pawl (32), a reset unit (35), and a control unit. The ratchet disc (31) is fixedly located at the end of the boom (1). One end of the connecting seat (33) is connected to the boom (2), and the other end of the connecting seat (33) is hinged to the pawl (32) through a hinge pin (34). The two ends of the reset unit (35) are respectively hinged to the boom (2) and the pawl (32) and are used to apply an elastic force to the pawl (32) so that the pawl (32) engages with the ratchet disc (31). The control unit is connected to the pawl (32) and is used to apply a pulling force to the pawl (32) so that the pawl (32) separates from the ratchet disc (31). The two ends of the synchronization mechanism (4) are connected to the two booms (2) respectively, and are used to realize the synchronous movement of the two booms (2).
2. The BIW assembly single-operator outfeed spreader of claim 1, wherein: The ratchet disc (31) includes a fan-shaped plate (311), and the arc-shaped edge of the plate (311) is provided with a number of slots (312) in sequence; when the boom (2) is flipped upward, the pawl (32) is subjected to force and slides along the slot (312) and slides into the next slot (312) in sequence; when the boom (2) is flipped downward, the pawl (32) engages with the slot (312) to prevent the boom (2) from rotating.
3. The BIW assembly single-operator offline lifting tool of claim 1, wherein: The head of the pawl (32) is provided with a hook (321), and the tail of the pawl (32) is bent outward to form a bent part (322).
4. The BIW assembly single-operator offline lifting tool of claim 1, wherein: The reset unit (35) includes a reset spring (351), the two ends of which are connected to the boom (2) and the pawl (32) respectively via a mounting base (352), and the connection point between the mounting base (352) and the pawl (32) is located below the hinge shaft (34).
5. The BIW assembly single-operator offline lifting tool of claim 1, wherein: The control unit includes a handbrake lever (36), which is mounted on the lower end of the boom (2) and connected to the pawl (32) via a pull rope / lever (37).
6. The BIW assembly one-man off-line spreader of claim 1, wherein: The ratchet disc (31), connecting seat (33), pawl (32), and reset unit (35) are all provided in two sets, and the tails of the two pawls (32) are connected by a connecting rod (38), which is also connected to the control unit.
7. The BIW assembly single-operator offline lifting tool of claim 1, wherein: The synchronization mechanism (4) includes a first flip plate (41) and two second flip plates (42); the middle part of the first flip plate (41) is hinged to the middle part of the lifting beam (1) through a second rotating shaft (43), and the two ends of the first flip plate (41) are respectively hinged to one end of the two second flip plates (42) through a synchronization rod (44), and the other end of the two second flip plates (42) is respectively fixedly connected to the upper end of the corresponding boom (2).
8. The BIW assembly single-operator offline lifting tool of claim 7, wherein: The two ends of the synchronizing rod (44) are respectively hinged to the corresponding first flip plate (41) and second flip plate (42) through U-shaped joints (45).
9. The BIW assembly single-operator offline lifting tool of claim 1, wherein: The lifting beam (1) includes two parallel beams (12), and a number of connecting beams (13) are provided between the two beams (12); the synchronization mechanism (4) is located between the two beams (12).
10. The BIW assembly single-operator offline lifting tool of claim 1, wherein: The lower end of the boom (2) is provided with a support frame (21), and the support frame (21) is provided with a support block (22) adapted to the workpiece.