A multifunctional lifting equipment with automatic locking

Abstract

The present invention relates to the technical field of lifting equipment, and specifically to an automatically locking multifunctional lifting equipment, comprising a base plate, an automatic adjusting component is installed on the top of the base plate, a manual adjusting component is installed on the top side of the base plate close to the automatic adjusting component, a supporting component is installed on the automatic adjusting component, a height adjusting component is installed on the supporting component, a replacement component is installed on the height adjusting component, and a self-locking hook component is installed on the height adjusting component through the replacement component; by utilizing the mutual cooperation between the various structures in the above-mentioned components, the device is used by plugging a plug-in frame into a first fixed frame to achieve the benefit of rapid assembly, and the problem of the existing device needing to repeatedly use bolts to install and splice the device during the preparation process before use is solved, which is very time-consuming to operate, resulting in a long preparation time in the early stage, thereby reducing work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of hoisting equipment, in particular to a multifunctional hoisting device with automatic locking. Background Art

[0002] Lifting equipment is a kind of mechanical equipment used to lift, move and install heavy or large objects. It is often used in construction, manufacturing, decoration, logistics and other fields. There are many types of lifting equipment, which have different designs and functions according to their functions, structures and scenarios to adapt to various working environments.

[0003] At present, in the process of decoration construction, a small lifting equipment is used to realize the transportation of decoration materials. In order to ensure that the storage space is small, the existing lifting equipment usually adopts an assembled type. In the preparation process before use, the installation needs to repeatedly use bolts to install and splice the device, which is very time-consuming to operate, resulting in a long preparation time in the early stage, which in turn leads to the problem of reduced work efficiency. Therefore, a multifunctional lifting equipment with automatic locking is needed to improve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a multifunctional lifting device with automatic locking to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An automatically locked multifunctional hoisting device comprises a base plate, an automatic adjustment component is installed on the top of the base plate, a manual adjustment component is installed on the top of the base plate near the automatic adjustment component, a support component is installed on the automatic adjustment component, a height adjustment component is installed on the support component, a replacement component is installed on the height adjustment component, and a self-locking hook component is installed on the height adjustment component through the replacement component;

[0007] The automatic adjustment component includes a second gear and a third gear, the support component includes a first fixed frame, a plug-in frame and a sliding slot, the first fixed frame is fixedly installed at the top center position of the third gear, a second through slot is opened on one side of the first fixed frame, connecting plates are installed on both sides of the second through slot, a fourth gear is rotatably installed between the two connecting plates, a sliding slot is provided on the top of the third gear close to the second through slot, a first rack is slidably installed in the inner cavity of the sliding slot, and the first rack is meshed with the fourth gear;

[0008] A transfer rack is fixedly installed on the outer walls of the two symmetrical side walls of the first rack, and the two transfer racks are in a "T" shape. A first installation frame is fixedly installed on one side of the two transfer racks away from the first rack, and a second spring is fixedly installed on the inner wall of the first installation frame, and a second clamping block is fixedly installed on the side of the second spring away from the first installation frame;

[0009] A resisting rod is installed at the center of the bottom of the inner cavity of the first fixed frame, a plug-in hole is provided at the bottom of the plug-in frame, a resisting rod is slidably installed in the plug-in hole, a second rack is installed at the bottom of one side of the plug-in frame, the second rack is slidably installed in the inner wall of the second through groove, a first through groove is provided on the side wall of the plug-in frame, a moving rod is slidably installed in the inner cavity of the plug-in frame, and the resisting rod and the bottom of the moving rod are in contact with each other;

[0010] The plug-in frame has two symmetrical outer walls on both sides respectively provided with clamping grooves, and the second clamping blocks are respectively clamped in the two clamping grooves.

[0011] As a preferred solution of the present invention, a height adjustment component is installed on the outer wall of the moving rod, and the height adjustment component includes a hydraulic telescopic rod. The hydraulic telescopic rod is rotatably installed at the lower side of the moving rod, and a rotating block is rotatably installed on the top of the moving rod. The rotating block is "L"-shaped, and a fixed rod is fixedly installed at one end of the rotating block away from the moving rod, and the telescopic end of the hydraulic telescopic rod is rotatably installed on the side wall of the fixed rod.

[0012] As a preferred solution of the present invention, a replacement component is installed in cooperation with the end of the fixing rod away from the rotating block, and the replacement component includes a first plug-in block and a second fixed frame, the first plug-in block is in a "T" shape, and the plug-in rod is symmetrically fixedly installed on the side wall of the first plug-in block, a connecting groove is provided on the side of the fixing rod away from the rotating block, and a second fixing frame is installed on the outer wall of the side of the fixing rod close to the connecting groove, and third through grooves are symmetrically provided on both sides of the second fixing frame.

[0013] As a preferred solution of the present invention, a second mounting frame is slidably installed on the side of the outer wall of the fixing rod close to the second fixing frame, and mounting grooves are symmetrically provided on the top of the second mounting frame. Third springs are respectively fixedly installed on the bottom of the inner cavities of the two mounting grooves of the second mounting frame, and a second plug-in block is fixedly installed on the side of the third spring away from the second mounting frame, plug-in rods are respectively slidably installed in the two third through grooves, and fourth through grooves are respectively provided on the side walls of the two plug-in rods, and two ends of the second mounting frame are slidably installed in the two fourth through grooves, and the side walls of the plug-in rods are in contact with the side walls of the second plug-in block.

[0014] As a preferred solution of the present invention, the inner wall of the plug rod contacts the outer wall of the second installation frame, the inner wall of the third through groove contacts the outer wall of the plug rod, and the second installation frame is located between the second fixed frame and the rotating block.

[0015] As a preferred solution of the present invention, a self-locking hook assembly is slidably provided at the end of the fixed rod, and the self-locking hook assembly includes a hook body and a sliding frame, a hook body is provided at the bottom of the sliding frame, a connecting seat is provided at the bending part of the hook body, a connecting shaft is fixedly installed in the connecting seat, a torsion spring is sleeved on the connecting shaft, and a limit baffle is rotatably installed at both ends of the connecting shaft, and the two ends of the torsion spring are in contact with the limit baffle.

[0016] As a preferred solution of the present invention, a fixing rod is slidably installed in the inner wall of the sliding frame, one side wall of the sliding frame contacts the first plug-in block, and the other side wall of the sliding frame contacts the second fixing frame.

[0017] As a preferred solution of the present invention, the manual adjustment component includes a first spring and a sliding block, a groove is provided on one side of the top of the base plate, a first spring is fixedly installed on the inner wall of the groove on the side close to the third gear, a sliding block is fixedly installed on the side of the first spring away from the third gear, a through hole is provided in the sliding block, the top of the base plate is located on both sides of the groove and first clamping blocks are respectively installed, the two first clamping blocks are in a "concave" shape, a positioning block is slidably installed between the two first clamping blocks, a positioning block is slidably installed in the through hole, the first gear is rotatably installed on the top of the sliding block, and a rocker is installed in the middle of the first gear.

[0018] As a preferred solution of the present invention, a third gear is rotatably installed at the top center position of the base plate, a second gear is rotatably installed on the top side of the base plate close to the third gear, a motor is fixedly installed on the top side of the base plate close to the second gear, and a second gear is fixedly installed on the power output shaft of the motor.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In the present invention, by setting a supporting assembly on the automatically locking multifunctional lifting equipment and utilizing the mutual cooperation between the various structures in the assembly, the device can be quickly assembled by plugging the plug-in frame into the first fixed frame during use, thereby solving the problem that in the preparation process before use of the existing device, bolts need to be repeatedly used to install and splice the device, which is very time-consuming to operate and results in a long preparation time in the early stage, thereby reducing work efficiency.

[0021] 2. In the present invention, by arranging a replacement component on the automatically locking multifunctional lifting equipment and utilizing the mutual cooperation between the various structures in the component, the benefit of being convenient for rapid replacement and disassembly when the self-locking hook component is damaged after long-term use is achieved, and the problem that the self-locking hook component of the existing device is usually fixed by welding or the like, and it is inconvenient to replace the self-locking hook component when it is damaged is solved.

[0022] 3. In the present invention, by arranging a replacement component on the automatically locking multifunctional lifting equipment and utilizing the mutual cooperation between the various structures in the component, it is achieved that when the motor is damaged or the power is cut off during loading and use, the third gear can be manually rotated to drive the supporting component to operate, thereby solving the problem that if the motor of the existing device is damaged during use, the device will become unusable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the assembly structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the assembly structure of the interference rod of the present invention;

[0026] Figure 4 It is a schematic diagram of the bottom plate assembly structure of the present invention;

[0027] Figure 5 It is a schematic diagram of the assembly structure of the sliding rod of the present invention;

[0028] Figure 6 It is a schematic diagram of the assembly structure of the replacement component of the present invention;

[0029] Figure 7 For the present invention Figure 6 The middle part is an enlarged structural diagram;

[0030] Figure 8 It is a schematic diagram of the assembly structure of the self-locking hook assembly of the present invention.

[0031] In the figure: 1, bottom plate; 2, manual adjustment component; 201, first spring; 202, sliding block; 203, first clamping block; 204, through hole; 205, positioning block; 206, first gear; 207, rocker; 3, automatic adjustment component; 301, second gear; 302, motor; 303, third gear; 4, support component; 401, first fixed frame; 402, connecting plate; 403, fourth gear; 404, sliding groove; 405, first rack; 406, transfer rack; 407, first installation frame; 408, second spring; 409, second clamping block; 4010, contact rod; 4011, plug-in frame; 4012, second rack; 4013, Plug-in hole; 4014, first through slot; 4015, moving rod; 4016, second through slot; 4017, snap-in slot; 5, height adjustment assembly; 501, hydraulic telescopic rod; 502, rotating block; 503, fixed rod; 504, connecting slot; 6, replacement assembly; 601, first plug-in block; 602, second fixed frame; 603, second installation frame; 604, second plug-in block; 605, third spring; 606, third through slot; 607, plug-in rod; 608, fourth through slot; 7, self-locking hook assembly; 701, hook body; 702, sliding frame; 703, connecting seat; 704, connecting shaft; 705, torsion spring; 706, limit baffle; 8, groove. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] In order to facilitate understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings, in which several embodiments of the present invention are shown. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0036] Example: See Figure 1-8 The multifunctional lifting equipment with automatic locking shown in the figure comprises a base plate 1, an automatic adjustment component 3 is installed on the top of the base plate 1, a manual adjustment component 2 is installed on the side of the top of the base plate 1 close to the automatic adjustment component 3, a support component 4 is installed on the automatic adjustment component 3, a height adjustment component 5 is installed on the support component 4, a replacement component 6 is installed on the height adjustment component 5, and a self-locking hook component 7 is installed on the height adjustment component 5 through the replacement component 6;

[0037] Among them, the device should be provided with an external controller, and control the operation of the second gear 301 and the hydraulic telescopic rod 501;

[0038] The automatic adjustment component 3 includes a second gear 301 and a third gear 303, and the support component 4 includes a first fixed frame 401, a plug-in frame 4011 and a sliding slot 404. The first fixed frame 401 is fixedly installed at the top center position of the third gear 303, and a second through slot 4016 is provided on one side of the first fixed frame 401. Connecting plates 402 are respectively installed on the outer wall on both sides of the second through slot 4016, and a fourth gear 403 is rotatably installed between the two connecting plates 402. A sliding slot 404 is provided on the top of the third gear 303 near the second through slot 4016, and a first rack 405 is slidably installed in the inner cavity of the sliding slot 404, and the first rack 405 and the fourth gear 403 are meshed with each other;

[0039] A transfer rack 406 is fixedly installed on the outer walls of the two symmetrical side walls of the first rack 405, and the two transfer racks 406 are in a "T" shape. A first installation frame 407 is fixedly installed on one side of the two transfer racks 406 away from the first rack 405, and a second spring 408 is fixedly installed on the inner wall of the first installation frame 407. A second clamping block 409 is fixedly installed on one side of the second spring 408 away from the first installation frame 407;

[0040] A resisting rod 4010 is installed at the center of the bottom of the inner cavity of the first fixed frame 401, a plug-in hole 4013 is provided at the bottom of the plug-in frame 4011, and the resisting rod 4010 is slidably installed in the plug-in hole 4013, a second rack 4012 is installed at the bottom of one side of the plug-in frame 4011, and the second rack 4012 is slidably installed in the inner wall of the second through groove 4016, a first through groove 4014 is provided on the side wall of the plug-in frame 4011, and a moving rod 4015 is slidably installed in the inner cavity of the plug-in frame 4011, and the resisting rod 4010 and the moving rod 4015 are in contact with each other at the bottom;

[0041] The plug-in frame 4011 has two symmetrical outer walls formed thereon with snap-in grooves 4017 , respectively. The second snap-in blocks 409 are snap-into the two snap-in grooves 4017 , respectively.

[0042] In this embodiment, refer to Figure 1 , Figure 5 and Figure 7 As shown, a height adjustment component 5 is installed on the outer wall of the moving rod 4015, and the height adjustment component 5 includes a hydraulic telescopic rod 501. The hydraulic telescopic rod 501 is rotatably installed under one side wall of the moving rod 4015, and a rotating block 502 is rotatably installed on the top of the moving rod 4015. The rotating block 502 is "L" shaped, and a fixed rod 503 is fixedly installed on one end of the rotating block 502 away from the moving rod 4015. The telescopic end of the hydraulic telescopic rod 501 is rotatably installed on the side wall of the fixed rod 503.

[0043] When in use, the hydraulic telescopic rod 501 is activated, and the hydraulic telescopic rod 501 pushes the fixed rod 503 upward, so that the fixed rod 503 and the rotating block 502 rotate around the top of the moving rod 4015, thereby driving the self-locking hook assembly 7 at the end of the fixed rod 503 to move up and down;

[0044] Furthermore, the fixing rod 503 can be in the form of a telescopic rod and a straight rod, and different types of fixing rods 503 can be used according to different requirements.

[0045] In this embodiment, refer to Figure 1 , Figure 6 and Figure 7 As shown, the end of the fixed rod 503 away from the rotating block 502 is matched with the replacement component 6, and the replacement component 6 includes a first plug-in block 601 and a second fixed frame 602. The first plug-in block 601 is in a "T" shape, and the plug-in rod 607 is symmetrically fixedly installed on the side wall of the first plug-in block 601. A connecting groove 504 is opened on the side of the fixed rod 503 away from the rotating block 502, and a second fixed frame 602 is installed on the outer wall of the side of the fixed rod 503 close to the connecting groove 504. The second fixed frame 602 has third through grooves 606 symmetrically opened on both sides.

[0046] A second mounting frame 603 is slidably installed on one side of the outer wall of the fixing rod 503 close to the second fixing frame 602, and mounting grooves are symmetrically provided on the top of the second mounting frame 603. Third springs 605 are fixedly installed on the bottom of the inner cavities of the two sections of the mounting grooves of the second mounting frame 603, and a second plug-in block 604 is fixedly installed on the side of the third spring 605 away from the second mounting frame 603. Plug-in rods 607 are slidably installed in the two third through grooves 606, and fourth through grooves 608 are provided on the side walls of the two plug-in rods 607, and the two ends of the second mounting frame 603 are slidably installed in the two fourth through grooves 608, and the side walls of the plug-in rods 607 are in contact with the side walls of the second plug-in block 604.

[0047] The inner wall of the plug rod 607 contacts the outer wall of the second installation frame 603, the inner wall of the third through slot 606 contacts the outer wall of the plug rod 607, and the second installation frame 603 is located between the second fixed frame 602 and the rotating block 502;

[0048] A fixing rod 503 is slidably installed in the inner wall of the sliding frame 702, one side wall of the sliding frame 702 contacts the first plug-in block 601, and the other side wall of the sliding frame 702 contacts the second fixing frame 602;

[0049] When installing the self-locking hook assembly 7, firstly slide the sliding frame 702 to the end of the fixing rod 503, so that the sliding frame 702 and the second fixing frame 602 are in contact with each other, and then the first plug-in block 601 is plugged into the connecting groove 504. During the plugging, the plug-in rod 607 on the first plug-in block 601 will pass through the third through groove 606. After the plugging of the first plug-in block 601 and the connecting groove 504 is completed, the side wall of the first plug-in block 601 will be in contact with each other between the sliding frames 702.

[0050] Finally, press the second plug-in block 604 to squeeze the third spring 605, so that the second plug-in block 604 shrinks into the inner cavity of the second mounting frame 603, and plugs the second mounting frame 603 into the fixing rod 503 and the two fourth through grooves 608. At this time, release the pressure on the second plug-in block 604. Under the action of the third spring 605, the second plug-in block 604 will partially pop out of the outside of the mounting groove of the second mounting frame 603 and contact the plug-in rod 607, thereby limiting the position of the plug-in rod 607 and achieving the benefit of quick installation of the self-locking hook assembly 7.

[0051] In this embodiment, refer to Figure 1 and Figure 8As shown, a self-locking hook assembly 7 is slidably provided at the end of the fixed rod 503, and the self-locking hook assembly 7 includes a hook body 701 and a sliding frame 702. The bottom of the sliding frame 702 is provided with the hook body 701, and a connecting seat 703 is provided at the bending part of the hook body 701. A connecting shaft 704 is fixedly installed in the connecting seat 703, and a torsion spring 705 is sleeved on the connecting shaft 704. A limit baffle 706 is rotatably installed at both ends of the connecting shaft 704, and the two ends of the torsion spring 705 are in contact with the limit baffle 706.

[0052] Among them, when retrieving, the lifting rope is placed at the bend of the hook body 701. After being placed in, the limit baffle 706 will be reset and locked under the action of the torsion spring 705, and the limit baffle 706 will contact the side wall of the hook body 701, thereby achieving the benefit of limiting the position and preventing the hanging object from falling off.

[0053] In this embodiment, refer to Figure 1 and Figure 4 As shown, the manual adjustment component 2 includes a first spring 201 and a sliding block 202, a groove 8 is provided on one side of the top of the bottom plate 1, the first spring 201 is fixedly installed on the inner wall of the side of the groove 8 close to the third gear 303, the sliding block 202 is fixedly installed on the side of the first spring 201 away from the third gear 303, a through hole 204 is provided in the sliding block 202, the top of the bottom plate 1 is located on both sides of the groove 8 and the first clamping blocks 203 are respectively installed, the two first clamping blocks 203 are in a "concave" shape, a positioning block 205 is slidably installed between the two first clamping blocks 203, the positioning block 205 is slidably installed in the through hole 204, the first gear 206 is rotatably installed on the top of the sliding block 202, and a rocker 207 is installed in the middle of the first gear 206;

[0054] Among them, when the motor 302 is damaged, the positioning block 205 is pulled out. After the positioning block 205 is pulled out from the first clamping block 203 and the through hole 204, the limit on the sliding block 202 is released. At this time, under the action of the first spring 201, the sliding block 202 will drive the first gear 206 to move toward the direction of the third gear 303, so that the first gear 206 and the third gear 303 are meshed and clamped. Thereafter, the rocker 207 is rotated to drive the first gear 206, thereby driving the third gear 303 and the support assembly 4 on the third gear 303 to rotate, which is the advantage of manual adjustment.

[0055] In this embodiment, refer to Figure 1 and Figure 2 As shown, a third gear 303 is rotatably mounted at the top center of the bottom plate 1, a second gear 301 is rotatably mounted on a side of the top of the bottom plate 1 close to the third gear 303, a motor 302 is fixedly mounted on a side of the top of the bottom plate 1 close to the second gear 301, and the second gear 301 is fixedly mounted on the power output shaft of the motor 302;

[0056] The time-starting motor 302 is used to drive the second gear 301 to rotate. When the second gear 301 rotates, it drives the third gear 303 meshing therewith to rotate, thereby driving the support assembly 4 on the third gear 303 to rotate and adjust.

[0057] Working principle: When assembling before use, first fix the bottom plate 1 on the ground, and after installation, align the plug-in hole 4013 on the plug-in frame 4011 with the abutment rod 4010 for plugging. As the plug-in frame 4011 moves downward, the abutment rod 4010 will abut the moving rod 4015. As the plug-in frame 4011 and the bottom of the inner cavity of the first fixed frame 401 contact each other, the abutment rod 4010 will press the plug-in frame 4011 upwards to locate the moving rod 4015.

[0058] When the plug-in frame 4011 descends, the second rack 4012 on the plug-in frame 4011 will drive the fourth gear 403 to rotate. When the fourth gear 403 starts to rotate, it will drive the first rack 405 and the intermediate transfer frame 406 on the first rack 405 to move upward. As the two intermediate transfer frames 406 on the first rack 405 move upward, when the intermediate transfer frame 406 moves to the same horizontal plane as the clamping groove 4017, the second clamping block 409 will be clamped into the clamping groove 4017 under the action of the second spring 408, so as to prevent the plug-in frame 4011 from moving upward or downward, so as to realize the rapid assembly and erection of the support assembly 4.

[0059] When the hook body 701 is deformed and damaged after long-term use, the second plug block 604 is first pressed to squeeze the third spring 605, so that the second plug block 604 shrinks into the inner cavity of the second installation frame 603, and then the second installation frame 603 is pulled out and removed from the two fourth through slots 608, so as to release the position limit of the two plug rods 607 with the fourth through slots 608;

[0060] After completing the above operations, pull the first plug block 601 to drive the two plug rods 607 to be pulled out, thereby releasing the limit of the hook body 701 and realizing the rapid replacement of the self-locking hook assembly 7;

[0061] When the motor 302 is damaged, the positioning block 205 is pulled out. After the positioning block 205 is pulled out from the first clamping block 203 and the through hole 204, the limit on the sliding block 202 is released. At this time, under the action of the first spring 201, the sliding block 202 will drive the first gear 206 to move toward the third gear 303, so that the first gear 206 and the third gear 303 are meshed and clamped. Thereafter, the rocker 207 is rotated to drive the first gear 206, thereby driving the third gear 303 and the support assembly 4 on the third gear 303 to rotate, which is the advantage of manual adjustment.

[0062] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic locking multifunctional lifting device, comprising a base plate (1), characterized in that: An automatic adjustment component (3) is co-installed on the top of the base plate (1); a manual adjustment component (2) is co-installed on the side of the top of the base plate (1) close to the automatic adjustment component (3); a support component (4) is co-installed on the automatic adjustment component (3); a height adjustment component (5) is co-installed on the support component (4); a replacement component (6) is co-installed on the height adjustment component (5); and a self-locking hook component (7) is co-installed on the height adjustment component (5) via the replacement component (6); The automatic adjustment component (3) comprises a second gear (301) and a third gear (303); the support component (4) comprises a first fixed frame (401), a plug-in frame (4011) and a sliding groove (404); the first fixed frame (401) is fixedly installed at the top center position of the third gear (303); a second through groove (4016) is provided on one side of the first fixed frame (401); connecting plates (402) are respectively installed on both sides of the second through groove (4016); a fourth gear (403) is rotatably installed between the two connecting plates (402); a sliding groove (404) is provided on the top of the third gear (303) near the second through groove (4016); a first rack (405) is slidably installed in the inner cavity of the sliding groove (404); the first rack (405) and the fourth gear (403) are meshed with each other; A transfer rack (406) is fixedly installed on the upper side outer walls of the mutually symmetrical two side walls of the first rack (405), the two transfer racks (406) are in a "T" shape, and a first installation frame (407) is fixedly installed on the side of the two transfer racks (406) away from the first rack (405), a second spring (408) is fixedly installed on the inner wall of the first installation frame (407), and a second clamping block (409) is fixedly installed on the side of the second spring (408) away from the first installation frame (407); A resisting rod (4010) is installed at the center position of the bottom of the inner cavity of the first fixed frame (401); a plug-in hole (4013) is provided at the bottom of the plug-in frame (4011); a resisting rod (4010) is slidably installed in the plug-in hole (4013); a second rack (4012) is installed at the bottom of one side of the plug-in frame (4011); the second rack (4012) is slidably installed in the inner wall of the second through groove (4016); a first through groove (4014) is provided on the side wall of the plug-in frame (4011); a moving rod (4015) is slidably installed in the inner cavity of the plug-in frame (4011); the resisting rod (4010) and the moving rod (4015) are in contact with each other at the bottom; The plug-in frame (4011) is provided with snap-fitting grooves (4017) on two mutually symmetrical outer walls, and a second snap-fitting block (409) is snap-fitted into each of the two snap-fitting grooves (4017).

2. The multifunctional automatic locking lifting device according to claim 1, characterized in that: A height adjustment component (5) is mounted on the outer wall of the moving rod (4015), and the height adjustment component (5) comprises a hydraulic telescopic rod (501). The hydraulic telescopic rod (501) is rotatably mounted below one side wall of the moving rod (4015), and a rotating block (502) is rotatably mounted on the top of the moving rod (4015). The rotating block (502) is in an "L" shape, and a fixed rod (503) is fixedly mounted on one end of the rotating block (502) away from the moving rod (4015). The telescopic end of the hydraulic telescopic rod (501) is rotatably mounted on the side wall of the fixed rod (503).

3. The multifunctional automatic locking lifting device according to claim 2, characterized in that: A replacement component (6) is mounted on one end of the fixing rod (503) away from the rotating block (502), and the replacement component (6) comprises a first plug-in block (601) and a second fixing frame (602). The first plug-in block (601) is in a "T" shape, and a plug-in rod (607) is symmetrically fixedly mounted on the side wall of the first plug-in block (601). A connecting groove (504) is provided on the side of the fixing rod (503) away from the rotating block (502), and a second fixing frame (602) is mounted on the outer wall of the side of the fixing rod (503) close to the connecting groove (504), and third through grooves (606) are symmetrically provided on both sides of the second fixing frame (602).

4. The multifunctional automatic locking lifting device according to claim 3, characterized in that: A second mounting frame (603) is slidably mounted on a side of the outer wall of the fixing rod (503) close to the second fixing frame (602); mounting grooves are symmetrically provided on the top of the second mounting frame (603); third springs (605) are fixedly mounted on the bottom of the inner cavities of the two mounting grooves of the second mounting frame (603); a second plug-in block (604) is fixedly mounted on a side of the third spring (605) away from the second mounting frame (603); plug-in rods (607) are slidably mounted in the two third through grooves (606); fourth through grooves (608) are provided on the side walls of the two plug-in rods (607); two ends of the second mounting frame (603) are slidably mounted in the two fourth through grooves (608); the side walls of the plug-in rods (607) are in contact with the side walls of the second plug-in block (604).

5. The multifunctional automatic locking lifting device according to claim 4, characterized in that: The inner wall of the plug-in rod (607) contacts the outer wall of the second installation frame (603), the inner wall of the third through slot (606) contacts the outer wall of the plug-in rod (607), and the second installation frame (603) is located between the second fixed frame (602) and the rotating block (502).

6. The multifunctional automatic locking lifting device according to claim 3, characterized in that: A self-locking hook assembly (7) is slidably provided at the end of the fixed rod (503), and the self-locking hook assembly (7) comprises a hook body (701) and a sliding frame (702). The bottom of the sliding frame (702) is provided with the hook body (701), and a connecting seat (703) is provided at the bending part of the hook body (701). A connecting shaft (704) is fixedly installed in the connecting seat (703), and a torsion spring (705) is sleeved on the connecting shaft (704). A limit baffle (706) is rotatably installed at both ends of the connecting shaft (704), and the two ends of the torsion spring (705) are in contact with the limit baffle (706).

7. The multifunctional automatic locking lifting device according to claim 6, characterized in that: A fixing rod (503) is slidably mounted in the inner wall of the sliding frame (702), one side wall of the sliding frame (702) contacts the first plug-in block (601), and the other side wall of the sliding frame (702) contacts the second fixing frame (602).

8. The multifunctional automatic locking lifting device according to claim 1, characterized in that: The manual adjustment component (2) comprises a first spring (201) and a sliding block (202); a groove (8) is provided on one side of the top of the base plate (1); a first spring (201) is fixedly mounted on an inner wall of a side of the groove (8) close to the third gear (303); a sliding block (202) is fixedly mounted on a side of the first spring (201) away from the third gear (303); a through hole (204) is provided in the sliding block (202); first clamping blocks (203) are respectively mounted on both sides of the groove (8) at the top of the base plate (1); the two first clamping blocks (203) are in a "concave" shape; a positioning block (205) is slidably mounted between the two first clamping blocks (203); a positioning block (205) is slidably mounted in the through hole (204); a first gear (206) is rotatably mounted on the top of the sliding block (202); a rocker (207) is mounted in the middle of the first gear (206).

9. The multifunctional automatic locking lifting device according to claim 1, characterized in that: A third gear (303) is rotatably mounted at the center of the top of the base plate (1); a second gear (301) is rotatably mounted on a side of the top of the base plate (1) close to the third gear (303); a motor (302) is fixedly mounted on a side of the top of the base plate (1) close to the second gear (301); and the second gear (301) is fixedly mounted on a power output shaft of the motor (302).

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