High-stability stainless steel low-magnetism crane

Abstract

The invention discloses a high-stability stainless steel low-magnetic crane, relates to the field of cranes, solves the problems that when an existing stainless steel low-magnetic crane is used, a lifting rope swings obviously in the lifting process, and transportation is not stable enough, and comprises a stabilizing mechanism, a limiting mechanism, a lifting arm and a lifting hook, the upper end of the lifting hook is fixedly connected with a connecting block, the connecting block is fixedly connected with a lifting rope, the stabilizing mechanism comprises socketed pipes, and the limiting mechanism comprises a fixed shaft and a rotating disc. According to the high-stability stainless steel low-magnetism crane, the flexibility of the lifting rope can be kept in the lifting rope winding and unwinding process by controlling the distance between the socketed pipes conveniently; in the lifting process, the distance between the socketed pipes is reduced, the stability in the lifting process is improved, and when the stabilizing mechanism operates, the rotating friction between the fixed shaft and the rotating disc is linked and improved, so that the overall swinging resistance of the stabilizing mechanism and the lifting hook in the lifting process is increased, and shaking is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of cranes, in particular to a stainless steel low-magnetism crane with high stability. Background Art

[0002] A crane is a multi-action lifting machine capable of vertically lifting and horizontally transporting heavy objects within a certain range. It is also known as an overhead crane, overhead crane, or crane. Cranes are categorized as low-magnetic cranes and permanent-magnetic cranes. The key features of a tire crane are its combined driving cab and lifting control room. Evolved from crawler cranes, the crawler tracks and traveling frame are replaced with a tire-mounted chassis, overcoming the disadvantage of crawler cranes, where track plates can damage the road surface. It is a material handling machine.

[0003] Stainless steel low-magnetic cranes typically use a boom and rope to move the hook to the desired lifting position. The material to be lifted is secured to the hook, which is then pulled up using the rope. The boom swings to transfer the material to the desired location. To facilitate the hanging and raising and lowering of the hook, the rope is typically made of steel wire rope. This is prone to significant swinging during the lifting process, resulting in poor material transfer stability. Excessive swing in mid-air can easily cause the material to loosen or even fall from the hook, creating dangerous situations. Therefore, we propose a highly stable stainless steel low-magnetic crane. Summary of the Invention

[0004] The object of the present invention is to provide a stainless steel low-magnetic crane with high stability that is convenient for improving stability during lifting and reducing swing amplitude, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-stability stainless steel low-magnetic crane, comprising a stabilizing mechanism, a limiting mechanism, and a boom and a hook installed on the crane, wherein the upper end of the hook is fixedly connected to a connecting block, and the connecting block is fixedly connected to a lifting rope, and the stabilizing mechanism comprises a plurality of sleeve tubes sleeved with the outer wall of the lifting rope, a first spring is fixedly connected between adjacent sleeve tubes, and a second spring fixedly connected to the connecting block is fixedly connected to the sleeve tube near one end of the connecting block, for controlling the spacing between the sleeve tubes so that the spacing between the sleeve tubes can be maintained during the process of retracting and extending the lifting rope. The flexibility of the lifting rope reduces the distance between the sleeves during lifting, reduces the swing amplitude of the lifting rope, and improves the stability during lifting. The limiting mechanism includes a fixed shaft fixedly mounted on the boom, and a rotating disk is rotatably connected to the fixed shaft. The rotating disk is provided with a connecting piece for fixing the stabilizing mechanism, which is used to link and increase the rotational friction between the fixed shaft and the rotating disk when the stabilizing mechanism is running, so that the swing resistance of the stabilizing mechanism and the hook as a whole is increased during lifting, and the shaking is reduced, which is convenient for improving the stability during lifting and reducing the swing amplitude.

[0006] Preferably, the stabilizing mechanism also includes a wheel rotatably connected to the boom, and the boom is provided with a winding drum for driving the retraction and extension of the hoisting rope, one end of the hoisting rope is fixedly connected to the outer wall of the winding drum, and the hoisting rope and the sleeve are both entangled with the outer wall of the winding drum, and a docking piece for docking and limiting is provided between the sleeve and the connecting block, which is convenient for controlling the distance between the sleeves, so that the flexibility of the hoisting rope can be maintained during the retraction and extension of the hoisting rope, the distance between the sleeves is reduced during the lifting process, the swing amplitude of the hoisting rope is reduced, and the stability during the lifting process is improved.

[0007] Preferably, the connecting member includes a connecting frame fixedly mounted on the rotating disk, a device box is fixedly connected to the connecting frame, the sleeve and the sling pass through the device box and are movably connected to the inner wall of the device box to facilitate fixing of the stabilizing mechanism.

[0008] Preferably, the docking piece includes a clamping block fixedly installed on the bottom of the sleeve tube, and the top of the sleeve tube and the top plate of the connecting block are both provided with a clamping groove that can be plugged into the clamping block on the adjacent sleeve tube, so as to facilitate the docking and limiting between the adjacent connecting blocks and sleeve tubes.

[0009] Preferably, the stabilizing mechanism further includes a plurality of plug-in blocks that can be plugged into the clamping slots in the horizontal direction, a plurality of lifting slots are provided in the device box, a lifting rod is slidably connected in the vertical direction in the lifting slot, a fixed frame is fixedly connected to the bottom of the lifting rod, the plug-in block is slidably connected to the inner wall of the fixed frame in the horizontal direction, one end of the plug-in block is fixedly connected to a first tension spring fixedly connected to the inner wall of the fixed frame, a driving member for controlling the moving state of the lifting rod and the plug-in block is provided in the device box, so as to facilitate the control of the docking state between adjacent connecting blocks and sleeve pipes.

[0010] Preferably, the driving member includes a hydraulic delivery pump fixedly mounted on the connecting frame, the output end of the hydraulic delivery pump is connected to a connecting pipe connected to the top of the lifting slot, the top of the lifting rod is fixedly connected to a second tension spring fixedly connected to the inner wall of the device box, and a connecting pipe for connecting the lifting slot and the fixed frame is opened in the lifting rod, so as to facilitate the control of the moving state of the lifting rod and the plug-in block.

[0011] Preferably, the limiting mechanism also includes a lifting frame installed in the rotating disk, the fixed shaft passes through the middle of the lifting frame, a sliding groove is provided in the rotating disk, the lifting frame is slidably connected to the inner wall of the sliding groove in a vertical direction, and the bottom of the lifting frame is fixedly connected to a return spring fixedly connected to the sliding groove, and the sliding groove is provided with a control member for linking the lifting frame to perform lifting and lowering adjustment when the fixed frame moves, so that when the fixed frame is lifted and lowered, the rotational friction between the fixed shaft and the rotating disk is linked to increase, so that during the lifting process, the swing resistance of the stabilizing mechanism and the hook as a whole is increased, thereby reducing shaking.

[0012] Preferably, the control component includes a pull rope fixedly mounted on the fixed frame, the pull rope passes through the connecting frame and is slidably connected to the inner wall of the connecting frame, a driving block is slidably connected in the sliding groove along the vertical direction, the end of the pull rope away from the fixed frame is fixedly connected to the bottom of the driving block, and the upper side of the driving block is fixedly connected to a third tension spring fixedly connected to the bottom of the lifting frame, so as to facilitate the linkage of the lifting frame for lifting and lowering adjustment when the fixed frame moves.

[0013] Preferably, a rubber pad for increasing the friction between the lifting frame and the fixed shaft is fixedly connected to the upper side of the inner wall of the lifting frame, so as to increase the friction between the lifting frame and the fixed shaft and improve the stability in the conflicting state.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a high-stability stainless steel low-magnetism crane, which solves the problem that the existing stainless steel low-magnetism crane has obvious swinging of the lifting rope during lifting and unstable transportation. It is convenient to control the distance between the sleeves so that the flexibility of the lifting rope can be maintained during the process of retracting and releasing the lifting rope, and the distance between the sleeves can be reduced during the lifting process, thereby improving the stability during the lifting process. When the stabilizing mechanism is running, the rotational friction between the fixed shaft and the rotating disk is linked to increase, so that the swing resistance of the stabilizing mechanism and the hook as a whole is increased during the lifting process, thereby reducing shaking.

[0015] When the lifting link is lifted up, the lifting link is lifted and the lifting link is lifted up, and the lifting link is lifted and the lifting link is started. When the lifting link is lifted, the lifting link is lifted and the lifting link is started, and the lifting link is lifted and the lifting link is started.

[0016] 3. The present invention provides a high-stability stainless steel low-magnetic crane. When the fixed frame moves downward, it will drive the pull rope to pull the drive block downward, so that the third tension spring pulls the lifting frame to move downward. After the rubber pad on the lifting frame moves downward, it will tightly contact the outer wall of the fixed shaft, thereby increasing the friction between the rotating disk and the fixed shaft, so that the rotation amplitude of the rotating disk during the lifting process is greatly reduced, and the position of the lifting rope and the device box is also relatively stably fixed, thereby improving the stability during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the local structure of the stabilizing mechanism of the present invention; Figure 3 It is a schematic diagram of the partial structure of the limiting mechanism of the present invention; Figure 4 for Figure 3 Enlarged view of area A in the middle; Figure 5 for Figure 3 Enlarged view of area B in the middle; Figure 6 This is a partial structural sectional view of the limiting mechanism of the present invention; Figure 7 for Figure 6 Enlarged view of area C in the middle; Figure 8 This is a cross-sectional view of the local structure of the stabilizing mechanism of the present invention; Figure 9 for Figure 8 Enlarged view of area D in the middle.

[0018] In the figure: 1- boom; 2- hook; 3- connecting block; 4- lifting rope; 5- stabilizing mechanism; 6- sleeve pipe; 7- first spring; 8- second spring; 9- limiting mechanism; 10- fixed shaft; 11- rotating disk; 12- connecting piece; 13- wheel disc; 14- reeling reel; 15- docking piece; 16- connecting frame; 17- device box; 18- clamping block; 19- clamping groove; 20- plug-in block; 21- lifting groove; 22- lifting rod; 23- fixing frame; 24- first tension spring; 25- driving piece; 26- hydraulic delivery pump; 27- connecting pipe; 28- second tension spring; 29- connecting pipe; 30- lifting frame; 32- sliding groove; 33- reset spring; 35- control piece; 36- pull rope; 37- driving block; 38- third tension spring; 39- rubber pad. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figures 1-9 The present invention provides a technical solution: a high-stability stainless steel low-magnetic crane, comprising a stabilizing mechanism 5, a limiting mechanism 9, and a boom 1 and a hook 2 installed on the crane, the upper end of the hook 2 is fixedly connected to a connecting block 3, and the connecting block 3 is fixedly connected to a lifting rope 4, the stabilizing mechanism 5 includes multiple groups of sleeves 6 sleeved with the outer wall of the lifting rope 4, a first spring 7 is fixedly connected between adjacent sleeves 6, and a second spring 8 fixedly connected to the connecting block 3 is fixedly connected to the sleeve 6 near one end of the connecting block 3, which is used to control the spacing between the sleeves 6, so that the flexibility of the lifting rope 4 can be maintained during the retraction and extension of the lifting rope 4, the spacing between the sleeves 6 is reduced during the lifting process, the swing amplitude of the lifting rope 4 is reduced, and the stability during the lifting process is improved.

[0021] The limiting mechanism 9 includes a fixed shaft 10 fixedly mounted on the boom 1, and a rotating disk 11 is rotatably connected to the fixed shaft 10. The rotating disk 11 is provided with a connecting member 12 for fixing the stabilizing mechanism 5. The connecting member 12 includes a connecting frame 16 fixedly mounted on the rotating disk 11, and a device box 17 is fixedly connected to the connecting frame 16. The sleeve 6 and the lifting rope 4 pass through the device box 17 and are movably connected to the inner wall of the device box 17. When the stabilizing mechanism 5 is running, the rotational friction between the fixed shaft 10 and the rotating disk 11 is linked to increase, so that the swing resistance of the stabilizing mechanism 5 and the hook 2 as a whole is increased during the lifting process, thereby reducing shaking.

[0022] The stabilizing mechanism 5 also includes a wheel 13 rotatably connected to the boom 1. The boom 1 is provided with a reel 14 for driving the reel and retracting the lifting rope 4. One end of the lifting rope 4 is fixedly connected to the outer wall of the reel 14. The lifting rope 4 and the sleeve 6 are both entangled with the outer wall of the reel 14. A docking piece 15 for docking and limiting is provided between the sleeve 6 and the connecting block 3. The docking piece 15 includes a clamping block 18 fixedly installed at the bottom of the sleeve 6. The top of the sleeve 6 and the top plate of the connecting block 3 are both provided with a clamping groove 19 that can be plugged into the clamping block 18 on the adjacent sleeve 6.

[0023] The stabilizing mechanism 5 also includes multiple groups of plug-in blocks 20 that can be plugged into the card slots 19 in the horizontal direction. Multiple groups of lifting slots 21 are opened in the device box 17. The lifting slots 21 are slidably connected with lifting rods 22 in the vertical direction. The bottom of the lifting rod 22 is fixedly connected to a fixed frame 23. The plug-in block 20 is slidably connected to the inner wall of the fixed frame 23 in the horizontal direction. One end of the plug-in block 20 is fixedly connected to a first tension spring 24 fixedly connected to the inner wall of the fixed frame 23. A driving member 25 for controlling the moving state of the lifting rod 22 and the plug-in block 20 is provided in the device box 17.

[0024] The driving member 25 includes a hydraulic delivery pump 26 fixedly mounted on the connecting frame 16. The output end of the hydraulic delivery pump 26 is connected to a connecting pipe 27 connected to the top of the lifting groove 21. The top of the lifting rod 22 is fixedly connected to a second tension spring 28 fixedly connected to the inner wall of the device box 17. A connecting pipe 29 is opened in the lifting rod 22 for connecting the lifting groove 21 and the fixed frame 23.

[0025] The limiting mechanism 9 also includes a lifting frame 30 installed in the rotating disk 11. The upper side of the inner wall of the lifting frame 30 is fixedly connected with a rubber pad 39 for increasing the friction between the lifting frame 30 and the fixed shaft 10. The fixed shaft 10 passes through the middle of the lifting frame 30. A sliding groove 32 is provided in the rotating disk 11. The lifting frame 30 is slidably connected to the inner wall of the sliding groove 32 in the vertical direction. The bottom of the lifting frame 30 is fixedly connected with a return spring 33 fixedly connected to the sliding groove 32. A control component 35 is provided in the sliding groove 32 for linking the lifting frame 30 to perform lifting and lowering adjustment when the fixed frame 23 moves.

[0026] The control component 35 includes a pull rope 36 fixedly mounted on the fixed frame 23. The pull rope 36 passes through the connecting frame 16 and is slidably connected to the inner wall of the connecting frame 16. A driving block 37 is slidably connected in the sliding groove 32 along the vertical direction. The end of the pull rope 36 away from the fixed frame 23 is fixedly connected to the bottom of the driving block 37. The upper side of the driving block 37 is fixedly connected to a third tension spring 38 fixedly connected to the bottom of the lifting frame 30.

[0027] In this embodiment, during lifting, the crane controls the boom 1 to swing so that the hook 2 reaches above the desired position, and then the winding disk 14 is used to untie the lifting rope 4 and the sleeve 6, so that the lifting rope 4 is guided by the wheel 13 and vertically lowers the hook 2 to the desired position, and the material to be lifted can be hung on the hook 2 for fixation. During this process, the rotating disk 11 can rotate freely around the fixed axis 10, thereby ensuring that the hook 2 is always subject to gravity so that one end of the lifting rope 4 is in a vertical downward state, and the device box 17 is also in a vertical state driven by the lifting rope 4 and the sleeve 6.

[0028] After that, the winding drum 14 is used to reel up the lifting rope 4 and one end of the sleeve tube 6, so that the material is pulled up to the required height by the hook 2, and then the hydraulic delivery pump 26 is started to fill the connecting pipe 27 and the lifting groove 21 with hydraulic oil. The hydraulic oil enters the fixed frame 23 through the connecting pipe 29, pushing the plug-in block 20 to slide horizontally and conflict with the outer wall of the sleeve tube 6. After that, the plug-in block 20 can no longer slide horizontally. As the hydraulic pressure in the lifting groove 21 continues to increase, the lifting rod 22 is pushed down, driving the fixed frame 23 and the plug-in block 20 to move down together. During the downward movement, the plug-in block 20 is in contact with the connecting groove After 19 is flush, it is inserted into the clamping groove 19, and then the sleeve pipe 6 at this position can be driven to move downward together. The sleeve pipe 6 moves downward so that the bottom clamping block 18 is inserted into the clamping groove 19 of the lower sleeve pipe 6, and the first spring 7 and the second spring 8 are compressed until the clamping block 18 on the sleeve pipe 6 at the bottom is inserted into the clamping groove 19 on the connecting block 3, so that the sleeve pipe 6 between the connecting block 3 and the device box 17 can be combined into a cylindrical structure as a whole, and the lifting rope 4 is wrapped and limited. At this time, the lifting rope 4 is wrapped by the sleeve pipe 6, and the probability of bending is greatly reduced, which effectively improves the stability during the lifting process.

[0029] When the fixed frame 23 moves downward, the pull rope 36 will pull the drive block 37 downward, so that the third tension spring 38 will pull the lifting frame 30 downward. After the rubber pad 39 on the lifting frame 30 moves downward, it will tightly contact the outer wall of the fixed shaft 10, thereby increasing the friction between the rotating disk 11 and the fixed shaft 10, so that the rotation amplitude of the rotating disk 11 during the lifting process is greatly reduced, and the position of the lifting rope 4 flush with the device box 17 is also relatively stably fixed, thereby improving the stability during the lifting process.

[0030] After the lifting is completed, the material on the hook 2 is removed, and the hydraulic delivery pump 26 is controlled to extract the hydraulic oil in the lifting groove 21, so that the plug-in block 20 can slide horizontally into the fixed frame 23 to compress the first tension spring 24. At the same time, the lifting rod 22 gradually moves upward, compressing the second tension spring 28. Under the push of the first spring 7 and the second spring 8, the gap between the sleeve pipe 6 gradually expands to the set value, and the clamping block 18 slides out of the clamping groove 19, releasing the plug-in limit, and the lifting rope 4 can be bent and retracted again. The sleeve pipe 6 can be twisted and bent to the required angle by the first spring 7. At the same time, the fixed frame 23 releases the downward pull on the pull rope 36, and the reset spring 33 pushes the lifting frame 30 to move up and reset, releasing the conflict between the rubber pad 39 and the fixed shaft 10, and the overall reset function of the equipment can be completed.

[0031] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0032] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A high stability stainless steel low magnetic crane, characterized in that, include: A boom (1) and a hook (2) mounted on a crane, wherein the upper end of the hook (2) is fixedly connected to a connecting block (3), and the connecting block (3) is fixedly connected to a lifting rope (4); Also includes: A stabilizing mechanism (5), the stabilizing mechanism (5) comprising a plurality of sleeve tubes (6) sleeved with the outer wall of the lifting rope (4), a first spring (7) being fixedly connected between adjacent sleeve tubes (6), and a second spring (8) being fixedly connected to the connecting block (3) and being fixedly connected to the sleeve tube (6) at one end of the connecting block (3), for controlling the spacing between the sleeve tubes (6), so that the flexibility of the lifting rope (4) can be maintained during the process of retracting and releasing the lifting rope (4), and the spacing between the sleeve tubes (6) can be reduced during the lifting process, so as to reduce the swing amplitude of the lifting rope (4) and improve the stability during the lifting process; A limiting mechanism (9), the limiting mechanism (9) comprising a fixed shaft (10) fixedly mounted on the boom (1), the fixed shaft (10) being rotatably connected to a rotating disk (11), the rotating disk (11) being provided with a connecting piece (12) for fixing the stabilizing mechanism (5), and being used for linking and increasing the rotational friction between the fixed shaft (10) and the rotating disk (11) when the stabilizing mechanism (5) is in operation, so that during the lifting process, the overall swing resistance of the stabilizing mechanism (5) and the hook (2) is increased, thereby reducing shaking.

2. A high stability stainless steel low magnetic crane according to claim 1, characterized in that: The stabilizing mechanism (5) further comprises a wheel (13) rotatably connected to the boom (1); the boom (1) is provided with a reel (14) for driving and retracting a hoisting rope (4); one end of the hoisting rope (4) is fixedly connected to an outer wall of the reel (14); the hoisting rope (4) and the sleeve tube (6) are both entangled with the outer wall of the reel (14); and a docking member (15) for docking and limiting is provided between the sleeve tube (6) and the connecting block (3).

3. A high stability stainless steel low magnetic crane according to claim 2, characterized in that: The connecting member (12) comprises a connecting frame (16) fixedly mounted on the rotating disk (11), a device box (17) being fixedly connected to the connecting frame (16), the sleeve tube (6) and the suspension rope (4) passing through the device box (17) and being movably sleeved with the inner wall of the device box (17).

4. A high stability stainless steel low magnetic crane according to claim 3, characterized in that: The docking member (15) comprises a clamping block (18) fixedly mounted on the bottom of the sleeve tube (6), and the top of the sleeve tube (6) and the top plate of the connecting block (3) are both provided with a clamping groove (19) capable of being plugged into the clamping block (18) on the adjacent sleeve tube (6).

5. A high stability stainless steel low magnetic crane according to claim 4, characterized in that: The stabilizing mechanism (5) further comprises a plurality of plug-in blocks (20) capable of being plugged into the clamping grooves (19) in a horizontal direction. The device box (17) is provided with a plurality of lifting grooves (21). The lifting grooves (21) are slidably connected with lifting rods (22) in a vertical direction. The bottom of the lifting rods (22) is fixedly connected with a fixing frame (23). The plug-in block (20) is slidably connected with the inner wall of the fixing frame (23) in a horizontal direction. One end of the plug-in block (20) is fixedly connected with a first tension spring (24) fixedly connected with the inner wall of the fixing frame (23). The device box (17) is provided with a driving member (25) for controlling the moving state of the lifting rod (22) and the plug-in block (20).

6. A high stability stainless steel low magnetic crane according to claim 5, characterized in that: The driving member (25) comprises a hydraulic delivery pump (26) fixedly mounted on the connecting frame (16); the output end of the hydraulic delivery pump (26) is connected to a connecting pipe (27) connected to the top end of the lifting groove (21); the top end of the lifting rod (22) is fixedly connected to a second tension spring (28) fixedly connected to the inner wall of the device box (17); and a connecting pipe (29) for connecting the lifting groove (21) and the fixed frame (23) is provided in the lifting rod (22).

7. A high stability stainless steel low magnetic crane according to claim 5, characterized in that: The limiting mechanism (9) further comprises a lifting frame (30) installed in the rotating disk (11); the fixed shaft (10) passes through the middle of the lifting frame (30); a sliding groove (32) is provided in the rotating disk (11); the lifting frame (30) is slidably connected to the inner wall of the sliding groove (32) along the vertical direction; a return spring (33) fixedly connected to the sliding groove (32) is fixedly connected to the bottom of the lifting frame (30); and a control member (35) is provided in the sliding groove (32) for linking the lifting frame (30) to perform lifting and lowering adjustment when the fixed frame (23) moves.

8. A high stability stainless steel low magnetic crane according to claim 7, characterized in that: The control member (35) comprises a pull rope (36) fixedly mounted on the fixed frame (23); the pull rope (36) passes through the connecting frame (16) and is slidably connected to the inner wall of the connecting frame (16); a driving block (37) is slidably connected in the sliding groove (32) along the vertical direction; one end of the pull rope (36) away from the fixed frame (23) is fixedly connected to the bottom of the driving block (37); and a third tension spring (38) fixedly connected to the bottom of the lifting frame (30) is fixedly connected to the upper side of the driving block (37).

9. A high stability stainless steel low magnetic crane according to claim 7, characterized in that: A rubber pad (39) is fixedly connected to the upper side of the inner wall of the lifting frame (30) for increasing the friction force between the lifting frame (30) and the fixed shaft (10).

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