A safe lifting and tipping device for heavy workpieces

Abstract

The utility model belongs to heavy -duty work piece processing technical field, concretely relates to a safe lifting turnover device for heavy -duty work piece. The utility model includes: bottom plate;Lifting load-bearing frame is fixedly installed on the bottom plate;Lifting assembly is along Z axle direction and is slid with lifting load-bearing frame arrangement;Workpiece bearing platform is rotatably connected with lifting assembly through rotating mechanism;And lifting drive mechanism, lifting drive mechanism is installed on the bottom plate, and lifting assembly is driven along lifting load-bearing frame lifting through the traction rope. The utility model's safe lifting turnover device for heavy -duty work piece integrates lifting, turnover and safety protection function, and realizes the lifting of workpiece through the cooperation sliding of lifting assembly and lifting load-bearing frame, sets up rotating mechanism, realizes the 360 degree rotary motion of workpiece, can realize the accurate positioning and attitude transformation of heavy -duty work piece between processing, detection, assembly and other processes, solves the problem of single function, needs multiple scene change, time -consuming and labor -intensive, low production efficiency in prior art.

Description

Technical Field

[0001] This utility model belongs to the field of heavy workpiece processing technology, specifically relating to a safety lifting and tilting device for heavy workpieces. Background Technology

[0002] In the fields of automobile manufacturing, construction machinery, and ship assembly, the processing and inspection of heavy workpieces often involve the transfer and posture adjustment of multiple processes. On traditional production lines, the lifting, flipping, and cross-station transfer of workpieces usually rely on hoisting equipment, manual assistance in flipping, or other single-function equipment. There is a lack of the ability to integrate multi-degree-of-freedom coordinated motion such as lifting, rotation, and precise positioning on the same station or equipment, which forces the production process to be segmented and increases the ineffective transfer time. For example, dedicated lifting equipment can only support the vertical lifting of workpieces, and dedicated rotating equipment can only perform horizontal rotation. This results in the workpiece needing to be transferred multiple times to complete the compound action, which is time-consuming, labor-intensive, and inefficient.

[0003] Meanwhile, workpieces may fall or overturn during transfer or flipping due to unstable hoisting, shift in center of gravity, or failure of equipment linkage; operators need to frequently intervene in different equipment areas for hooking and switching, and are exposed to the mechanical movement path, which makes them prone to squeezing and collision injuries. Furthermore, there is a lack of unified safety interlocking and protection mechanisms, and the safety measures of a single piece of equipment cannot cover the risk points of the entire process of complex actions. Utility Model Content

[0004] The purpose of this invention is to provide a safe lifting and turning device for heavy workpieces, overcoming the shortcomings of existing equipment, such as single function, need for multiple relocations, time and labor consumption, and the need for operator assistance, which poses a significant safety risk. This invention integrates workpiece lifting and rotation, and the lifting-rotation coordinated action forms a composite motion trajectory of the workpiece, thereby achieving complete automation of workpiece posture adjustment. It is also equipped with a three-level safety protection system to improve personnel safety.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A safety lifting and tilting device for heavy workpieces includes: Base plate; A lifting support frame is fixedly installed on the base plate; The lifting assembly is slidably disposed in the vertical direction with the lifting support frame; The workpiece carrying platform is rotatably connected to the lifting assembly via a rotating mechanism; And a lifting drive mechanism, which is mounted on the base plate and drives the lifting assembly to move up and down along the lifting support frame via a traction rope; The rotating mechanism includes a rotary motor mounted on the lifting assembly and a rotating shaft coaxially arranged with the output shaft of the rotary motor and passing through the lifting assembly; the extension line of the rotating shaft is in the X-axis direction; the rotating shaft is rotatably connected to the lifting assembly and fixedly connected to the workpiece bearing platform.

[0006] Furthermore, the lifting support frame includes: Vertical columns symmetrically arranged on the base plate; A sliding groove is provided on the inner side of the vertical column; Two tripods are fixedly installed in parallel at the rear ends of the two vertical columns; The first load-bearing crossbeam is installed on top of the two vertical columns; The second load-bearing crossbeam is installed on the two tripods and is arranged parallel to the first load-bearing crossbeam.

[0007] Furthermore, the lifting assembly includes: The lifting block is connected to the lifting drive mechanism via a traction rope; At least two lifting rollers are provided, which are rotatably mounted on both sides of the lifting block and slide within the corresponding sliding grooves.

[0008] Furthermore, the lifting drive mechanism includes: The drive motor is mounted on the base plate; The traction reel is coaxially arranged with the output shaft of the drive motor; At least one guide wheel is mounted on the first load-bearing crossbeam and / or the second load-bearing crossbeam; The lifting lugs are fixedly installed on the upper end face of the lifting block; The traction rope is equipped with a hook, which is used in conjunction with the lifting lug for hoisting; one end of the traction rope is fixed to the first load-bearing crossbeam, and the other end passes through the guide wheel and is wound on the traction reel.

[0009] Furthermore, two guide wheels are provided, which are respectively installed on the first load-bearing crossbeam and the second load-bearing crossbeam.

[0010] Furthermore, it also includes a mechanical limiting mechanism for limiting the workpiece carrying platform; the mechanical limiting mechanism includes: Several safety sockets are equally spaced along the vertical direction on the vertical column; A safety pin engages with the safety socket.

[0011] Furthermore, the workpiece carrying platform includes a transverse bracket, a vertical mounting plate installed on one side of the transverse bracket, and at least one workpiece fixing pin installed on the transverse bracket; The vertical mounting plate is fixedly installed on the rotating shaft; the workpiece is fixedly mounted on the horizontal bracket by workpiece fixing pins.

[0012] Furthermore, at least one supporting tilting rod is provided between the lifting support frame and the base plate to provide auxiliary support for the lifting support frame.

[0013] Furthermore, limit switches are provided at both the upper and lower ends of the two sliding grooves to limit the lifting position of the lifting assembly.

[0014] Furthermore, it also includes a power distribution cabinet installed on the base plate for power supply and control output, a first control panel installed on the power distribution cabinet, a remote controller for control output, and a second control panel set on the remote controller; The first control panel is equipped with a main power switch button, a lifting start button, a lifting stop button, a rotation start button, a rotation stop button, a first up button, a first down button, a first forward rotation button, a first reverse rotation button, and a first mushroom head emergency stop button; The second control panel is equipped with a second up button, a second down button, a second forward button, a second reverse button, and a second mushroom-shaped emergency stop button.

[0015] The beneficial effects of this utility model's safety lifting and tilting device for heavy workpieces are: This utility model relates to a safety lifting and turning device for heavy workpieces, which integrates lifting, turning, and safety protection functions. It can meet the needs of multi-station collaborative operation of 1-3 ton workpieces. This utility model achieves the lifting of workpieces by setting up a lifting assembly and a lifting support frame to slide together. A rotating mechanism is set between the lifting assembly and the workpiece support platform to achieve 360-degree rotation of the workpiece. It can realize the precise positioning and posture change of heavy workpieces between processing, inspection, assembly and other processes. The lifting and turning device of this utility model solves the problems of single function, need for multiple site transfers, time and labor consumption and low production efficiency in the existing technology.

[0016] This utility model has a high degree of automation and is equipped with a mechanical limit mechanism to position the lifting block. On the one hand, it reduces the risk of safety accidents. On the other hand, it prevents processing, inspection or assembly errors caused by changes in the position of the workpiece during processing, inspection or assembly. At the same time, limit switches are set at the upper and lower positions of the sliding groove to prevent excessive movement of the lifting assembly, further reducing the occurrence of safety accidents. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a perspective view of a safety lifting and tilting device for heavy workpieces in an embodiment of this utility model.

[0019] Figure 2 This is a schematic diagram of the front view of the safety lifting and tilting device for heavy workpieces in an embodiment of this utility model.

[0020] Figure 3 This is a schematic diagram of the rear view of the safety lifting and turning device for heavy workpieces in an embodiment of this utility model.

[0021] Figure 4 This is a schematic diagram showing the connection between the lifting drive mechanism and the lifting support frame in an embodiment of this utility model.

[0022] Figure 5 This is a schematic diagram showing the connection between the lifting drive mechanism and the lifting assembly in an embodiment of this utility model.

[0023] Figure 6 yes Figure 5 A rear-view image.

[0024] Figure 7 This is a schematic diagram of the power distribution cabinet in an embodiment of this utility model.

[0025] Figure 8 This is a schematic diagram of the structure of the remote control in an embodiment of this utility model.

[0026] Figure 9 This is the control electrical diagram of each button in the embodiment of this utility model.

[0027] In the diagram: 1. Base plate; 2. Lifting support frame; 21. Vertical column; 22. Sliding groove; 23. Triangular frame; 24. First load-bearing crossbeam; 25. Second load-bearing crossbeam; 3. Lifting assembly; 31. Lifting block; 32. Lifting roller; 4. Workpiece bearing platform; 41. Horizontal bracket; 42. Vertical mounting plate; 43. Workpiece fixing pin; 5. Rotating mechanism; 51. Rotary motor; 52. Rotating shaft; 6. Lifting drive mechanism; 61. Drive motor; 62. Traction wheel; 63. Guide wheel; 64. Lifting lug; 65. Lifting hook; 7. Mechanical limit mechanism; 71. Safety socket; 72. Safety pin; 8. Support tilting rod; 9. Power distribution cabinet; 10. Traction rope; 20. Front platform; 30. Workpiece fixture; 40. Remote control. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0029] like Figures 1-9 The present invention provides a specific embodiment of a safety lifting and tilting device for heavy workpieces, including a base plate 1, a lifting support frame 2, a lifting assembly 3, a workpiece bearing platform 4, a lifting drive mechanism 6, a traction rope 10, and a rotating mechanism 5. Specifically, the lifting support frame 2 is fixedly installed on the base plate 1, the lifting assembly 3 is slidably arranged with the lifting support frame 2 in the vertical direction, and the workpiece bearing platform 4 is rotatably connected to the lifting assembly 3 through the rotating mechanism 5. The lifting drive mechanism 6 is installed on the base plate 1 and drives the lifting assembly 3 to rise and fall along the lifting support frame 2 through the traction rope 10.

[0030] like Figure 2 and Figure 3 As shown, the rotating mechanism 5 in this embodiment includes a rotary motor 51 mounted on the lifting assembly 3, and a rotating shaft 52 coaxially arranged with the output shaft of the rotary motor 51 and passing through the lifting assembly 3; the extension line of the rotating shaft 52 is in the X-axis direction; the rotating shaft 52 is rotatably connected to the lifting assembly 3, and the rotating shaft 52 is fixedly connected to the workpiece carrying platform 4. In this embodiment, the workpiece can rotate 360 ​​degrees, and based on actual processing and inspection requirements, it is set to be continuously adjustable from 0 to 180 degrees.

[0031] The current industrial sector mainly uses hoisting equipment to assist in turning over heavy workpieces, fixed rotating platforms, and special turning equipment. However, these methods are often inadequate, such as having limited functionality and lacking the ability to integrate multiple degrees of freedom, such as lifting, rotation, and precise positioning, into a single workstation or on the same equipment. This forces the production process to be segmented, increasing the time spent on ineffective transfers and the risk of accumulated positioning errors. Workpieces may fall or overturn during transfer or flipping due to unstable hoisting, center of gravity shift, or equipment linkage failure. Operators need to frequently intervene in different equipment areas for hooking and switching, exposing themselves to the mechanical movement path, making them prone to crushing and collision injuries. There is a lack of unified safety interlocking and protection mechanisms, and the safety measures of a single device cannot cover the risk points of the entire process of complex actions. Based on the above-mentioned shortcomings of current heavy workpiece flipping operations, this embodiment designs a safety lifting and flipping device for heavy workpieces, integrating lifting, flipping, and safety protection functions. It can meet the multi-station collaborative operation needs of 1-3 ton workpieces. This utility model achieves the lifting of the workpiece by setting the lifting assembly 3 and the lifting support frame 2 to slide together. A rotating mechanism 5 is set between the lifting assembly 3 and the workpiece bearing platform 4 to achieve 360-degree rotation of the workpiece. It can realize the precise positioning and posture change of heavy workpieces between processing, inspection, assembly and other processes. The lifting and flipping device of this utility model solves the problems of single function, need for multiple transfers, time and labor consumption, and low production efficiency in the existing technology.

[0032] The lifting support frame 2 in this embodiment includes: vertical columns 21 symmetrically arranged on the base plate 1; sliding grooves 22 arranged inside the vertical columns 21; two triangular frames 23 fixedly arranged parallel to the rear ends of the two vertical columns 21; a first load-bearing crossbeam 24 installed on the top of the two vertical columns 21; and a second load-bearing crossbeam 25 installed on the two triangular frames 23. It should be further noted that in this embodiment, the second load-bearing crossbeam 25 is arranged parallel to the first load-bearing crossbeam 24. See [reference needed]. Figure 2 As shown.

[0033] like Figure 2 and Figure 3 As shown, the lifting assembly 3 in this embodiment includes a lifting block 31 and at least two lifting rollers 32. Specifically, the lifting block 31 is connected to the lifting drive mechanism 6 via a traction rope 10. The lifting rollers 32 are divided into two equal parts and are rotatably installed on both sides of the lifting block 31, and slide in the corresponding sliding grooves 22.

[0034] As a preferred implementation method, such as Figure 5 and Figure 6 As shown, four lifting rollers 32 are provided, with two on each side of the lifting block 31.

[0035] The lifting drive mechanism 6 in this embodiment includes a drive motor 61, a traction sheave 62, at least one guide wheel 63, a lifting lug 64, and a hook 65 mounted on the base plate 1. Specifically, the traction sheave 62 is coaxially arranged with the output shaft of the drive motor 61. At least one guide wheel 63 is mounted on the first load-bearing crossbeam 24 and / or the second load-bearing crossbeam 25. The lifting lug 64 is fixedly mounted on the upper end face of the lifting block 31. One end of the traction rope 10 is fixed on the first load-bearing crossbeam 24, and the other end passes through the guide wheel 63 and is wound on the traction sheave 62. The hook 65 is threaded on the traction rope 10, and the hook 65 cooperates with the lifting lug 64 for lifting.

[0036] During installation, the lifting rollers 32 are installed on both sides of the lifting block 31 and set in the sliding groove 22. The hook 65 is hung on the lifting lug 64 at the upper end of the lifting block 31. When the workpiece carrying platform 4 is lifted, the drive motor 61 is started to drive the traction wheel 62 to rotate. Through the traction of the traction rope 10, the lifting rollers 32 on both sides of the lifting block 31 are driven to roll in the sliding groove 22, thereby realizing the lifting of the workpiece carrying platform 4 installed on the lifting block 31.

[0037] In this embodiment, the lifting drive mechanism 6 drives the workpiece bearing platform 4 to move vertically. In this embodiment, the workpiece stroke is 0m to 3m and the positioning accuracy is ±5mm.

[0038] It should be understood that when lifting and rotating actions are performed simultaneously, the lifting and flipping device of this embodiment can realize the coordinated control of lifting and rotating of the workpiece, forming a composite trajectory motion of the workpiece, thereby adapting to different operating requirements.

[0039] like Figure 5 and Figure 6 As shown, the workpiece carrying platform 4 in this embodiment includes a horizontal bracket 41, a vertical mounting plate 42 installed on one side of the horizontal bracket 41, and at least one workpiece fixing pin 43 installed on the horizontal bracket 41. The vertical mounting plate 42 is fixedly installed with the rotating shaft 52, and the workpiece is fixedly mounted on the horizontal bracket 41 by the workpiece fixing pin 43. It should be understood that the position and direction of the workpiece fixing pin 43 in this embodiment are adapted to the specific workpiece. The workpiece fixing pin 43 is generally adapted to the screw hole on the side of the workpiece. The workpiece fixing pin 43 is directly screwed into the screw hole on the side of the workpiece to fix the workpiece to the horizontal bracket 41. The specific position and structure of the workpiece fixing pin 43 will not be described in detail here. Any structure that can fix the workpiece to the horizontal bracket 41 that can be conceived by those skilled in the art should fall within the scope of this application.

[0040] To ensure the stability of the lifting support frame 2, at least one supporting tilting rod 8 is provided between the lifting support frame 2 and the base plate 1 in this embodiment to provide auxiliary support for the lifting support frame 2. As a preferred embodiment, two supporting tilting rods 8 are provided, and the two supporting tilting rods 8 are respectively located on both sides of the lifting drive mechanism 6 to avoid interference with the lifting drive mechanism 6.

[0041] As a specific implementation, the lifting and tilting device in this embodiment also includes a mechanical limiting mechanism 7 for limiting the workpiece carrying platform 4. The mechanical limiting mechanism 7 includes: a plurality of safety holes 71 equally spaced along the vertical direction on the vertical column 21 and safety pins 72 that cooperate with the safety holes 71. The safety holes 71 are arranged on two vertical columns 21, with safety holes 71 reserved at 300mm intervals along the vertical column 21 from bottom to top. The safety pins 72 that match the safety holes 71 are respectively installed at appropriate height positions on the sides of the two vertical columns 21. When the workpiece carrying platform 4 rises to a certain position, the safety pins 72 are inserted into the safety holes 71 corresponding to the lifting block 31 and abut against the lower end face of the lifting block 31 to fix the position of the lifting block 31.

[0042] Meanwhile, to ensure safety, limit switches are provided at both the upper and lower ends of the two sliding grooves 22 in this embodiment to limit the lifting position of the lifting assembly 3. Specifically, the limit switches include an upper limit switch and a lower limit switch, wherein the upper limit switch is installed about 10 cm to 20 cm below the first load-bearing crossbeam 24 at the top of the vertical lifting column, and the lower limit switch is installed above the lower safe position of the vertical lifting column.

[0043] To facilitate workpiece placement and installation, a front platform 20 is provided on the base plate 1 in this embodiment, and a workpiece fixture 30 is installed on the front platform 20. When it is necessary to perform processing, inspection, or other operations on the workpiece, the workpiece is first placed on the workpiece fixture 30. It should be understood that, such as Figures 7 to 9 As shown, this embodiment also includes a power distribution cabinet 9 mounted on the base plate 1 for power supply and control output, a first control panel mounted on the power distribution cabinet 9, a remote controller 40 for control output, and a second control panel mounted on the remote controller 40. The first control panel is equipped with a main power switch button, a lifting start button, a lifting stop button, a rotation start button, a rotation stop button, a first up button, a first down button, a first forward rotation button, a first reverse rotation button, and a first mushroom-shaped emergency stop button. The second control panel is equipped with a second up button, a second down button, a second forward rotation button, a second reverse rotation button, and a second mushroom-shaped emergency stop button. Emergency stop buttons are provided on both the remote controller 40 and the control box, forming a dual-channel emergency stop system to ensure safety.

[0044] To further ensure safe operation, an electronic load sensor is installed at the fixed end of the traction rope 10 in this embodiment to monitor the load of the traction rope 10 in real time and to adjust the overload of the traction rope 10 in a timely manner.

[0045] It should be noted that before the safety lifting and tilting device for heavy workpieces in this embodiment is put into operation, it is necessary to check that the electrical, mechanical, safety devices and surrounding environment are in good condition, the operators are trained and qualified and wear personal protective equipment, evacuate irrelevant personnel from the surrounding area, set up warning lines or warning signs, and conduct a no-load test run once before each day's use.

[0046] The specific working principle and operation method are as follows: Using a crane or forklift, place the heavy workpiece to be flipped onto the transverse bracket 41, finely adjust its position to match the workpiece fixture 30, and align it with the workpiece fixing pin 43. Use the workpiece fixing pin 43 to lock the workpiece to the transverse bracket 41. Perform a shaping process on the front of the heavy workpiece. After processing, operate using the first control panel or the second control panel, press the corresponding rise button to raise the heavy workpiece to a suitable height for flipping and stop. Then, insert the safety pins 72 on the sides of the two vertical columns 21 into the safety sockets 71 closest to the bottom of the lifting assembly 3.

[0047] Next, press the forward or reverse button as needed to rotate the heavy workpiece until it reaches a horizontal position with the reverse side facing upwards, then stop rotating. Remove the safety pins 72 from the safety holes 71 on the sides of the two vertical columns 21 and place them in the storage box. Then, press the lower button to lower the horizontal bracket 41 so that the heavy workpiece is placed on the workpiece fixture 30 and stops. Release the workpiece fixing pin 43. Then, press the raise button to raise the horizontal bracket 41 to the appropriate height.

[0048] Next, insert the safety pins 72 on the sides of the two vertical columns 21 into the safety sockets 71 closest to the bottom of the lifting assembly 3. This step is unnecessary if no processing is required. Perform a shaping process on the reverse side of the heavy workpiece. After processing is complete, use an overhead crane or forklift to move the heavy workpiece away. Finally, press the lowering button to lower the horizontal bracket 41 onto the front platform 20 on the base plate 1. Turn off the power and clean the work area.

[0049] The lifting and tilting device in this embodiment not only solves the problems of single function, need for multiple site transfers, time and labor consumption, and low production efficiency in the prior art, but also has a high degree of automation. It is equipped with a mechanical limit mechanism 7 to position the lifting block 31, which reduces the risk of safety accidents on the one hand, and prevents processing, inspection or assembly errors caused by changes in the position of the workpiece during the processing, inspection or assembly process. At the same time, limit switches are set at the upper and lower positions of the sliding groove 22 to prevent excessive movement of the lifting assembly 3, further reducing the occurrence of safety accidents.

[0050] It should be understood that the specific embodiments described above are only for explaining the present invention and are not intended to limit the present invention. Obvious variations or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A safety lifting and tilting device for heavy workpieces, characterized in that, include: Base plate; A lifting support frame is fixedly installed on the base plate; The lifting assembly is slidably disposed in the vertical direction with the lifting support frame; The workpiece carrying platform is rotatably connected to the lifting assembly via a rotating mechanism; And a lifting drive mechanism, which is mounted on the base plate and drives the lifting assembly to move up and down along the lifting support frame via a traction rope; The rotating mechanism includes a rotary motor mounted on the lifting assembly and a rotating shaft coaxially arranged with the output shaft of the rotary motor and passing through the lifting assembly; the extension line of the rotating shaft is in the X-axis direction; the rotating shaft is rotatably connected to the lifting assembly and fixedly connected to the workpiece carrying platform; The lifting support frame includes: Symmetrical vertical columns are arranged on the base plate; A sliding groove is provided on the inner side of the vertical column; Two tripods are fixedly installed in parallel at the rear ends of the two vertical columns; The first load-bearing crossbeam is installed on top of the two vertical columns; The second load-bearing crossbeam is installed on the two tripods and is arranged parallel to the first load-bearing crossbeam. The lifting assembly includes: The lifting block is connected to the lifting drive mechanism via a traction rope; At least two lifting rollers are provided, which are divided into two equal parts and rotatably installed on both sides of the lifting block, and slide within the corresponding sliding grooves. It also includes a mechanical limiting mechanism for limiting the position of the workpiece carrying platform; the mechanical limiting mechanism includes: Several safety sockets are equally spaced along the vertical direction on the vertical column; A safety pin engages with the safety socket. When the workpiece support platform rises to a certain position, the safety pin is inserted into the corresponding safety socket of the lifting block and abuts against the lower end face of the lifting block to fix the position of the lifting block.

2. The safety lifting and tilting device for heavy workpieces according to claim 1, characterized in that, The lifting drive mechanism includes: The drive motor is mounted on the base plate; The traction reel is coaxially arranged with the output shaft of the drive motor; At least one guide wheel is mounted on the first load-bearing crossbeam and / or the second load-bearing crossbeam; The lifting lugs are fixedly installed on the upper end face of the lifting block; The traction rope is equipped with a hook, which is used in conjunction with the lifting lug for hoisting; one end of the traction rope is fixed to the first load-bearing crossbeam, and the other end passes through the guide wheel and is wound on the traction reel.

3. A safety lifting and tilting device for heavy workpieces according to claim 2, characterized in that: Two guide wheels are provided, which are respectively installed on the first load-bearing crossbeam and the second load-bearing crossbeam.

4. A safety lifting and tilting device for heavy workpieces according to claim 1, characterized in that: The workpiece carrying platform includes a horizontal bracket, a vertical mounting plate installed on one side of the horizontal bracket, and at least one workpiece fixing pin installed on the horizontal bracket. The vertical mounting plate is fixedly installed on the rotating shaft; the workpiece is fixedly mounted on the horizontal bracket by workpiece fixing pins.

5. A safety lifting and tilting device for heavy workpieces according to claim 1, characterized in that: At least one support tilting rod is provided between the lifting load-bearing frame and the base plate to provide auxiliary support for the lifting load-bearing frame.

6. A safety lifting and tilting device for heavy workpieces according to claim 2, characterized in that: Limit switches are provided at both the upper and lower ends of the two sliding grooves to limit the lifting position of the lifting assembly.

Images