Material lifting device for house building project

Abstract

The utility model discloses a material lifting device for housing construction engineering, relates to the field of housing construction engineering, and aims to solve the problems that in the prior art, the position and direction of the device are inconvenient to change, and transverse feeding cannot be carried out, according to the adopted technical scheme, the material lifting device comprises a chassis, a lifting frame and a sliding way, the chassis is provided with a platform, and the platform is rotationally connected with a rotating disc; a lifting frame is arranged on the rotating disc, and a lifting mechanism, a transverse moving mechanism and a switching mechanism are arranged on the lifting frame; a hopper is arranged on the lifting mechanism; by arranging the crawler-type walking chassis, the lifting device can be conveniently moved to a material lifting point, the orientation of the hopper can be changed by arranging the rotating disc, and materials can be conveniently unloaded to unloading points in different directions; and by arranging the transverse moving mechanism and the switching mechanism, after the materials are lifted to the discharging height, the hopper can be driven to transversely move through the transverse moving mechanism, so that the hopper is conveniently transferred to discharging points with different horizontal distances away from the lifting device, and the materials are more convenient to lift and transfer.

Description

Technical Field

[0001] This invention relates to the field of building construction engineering, specifically to a material lifting device for building construction engineering. Background Technology

[0002] Building construction engineering refers to the construction of various types of buildings and their ancillary facilities, as well as the installation of supporting lines, pipelines, equipment, and interior and exterior decoration projects. "Building" refers to projects with roofs, beams, columns, walls, foundations, and the ability to form internal spaces to meet people's needs for production, residence, study, and public activities. Building construction engineering is generally abbreviated as construction engineering, referring to the various technical work involved in the surveying, planning, design, construction, installation, and maintenance of newly built, renovated, or expanded buildings and ancillary structures, and the completed physical structure thereof.

[0003] Chinese patent CN201920599307.6 discloses a material hoist for construction. The technical solution includes a fixed frame, a base welded to the bottom of the fixed frame, and buffer plates symmetrically welded to both sides of the upper surface of the base. The side view of the fixed frame is an inverted U-shaped structure. The inner surface of the vertical ends of the fixed frame is provided with a sliding groove, and the inner surface of the sliding groove is slidably connected to the placement plate through a slider. A servo motor is bolted to the outer surface of one side of the placement plate, and the servo motor is driven by a transmission chain connected to conveying rollers rotatably connected to the inner surface of the two sides of the placement plate. A dual-axis motor is bolted to the top of the horizontal end of the fixed frame, and the two sides of the dual-axis motor are driven by a winding shaft through an output shaft. The lower part of the winding shaft is hinged to the slider through a steel cable.

[0004] This technical solution can only lift materials vertically. After being lifted to a specified height, it cannot transfer materials horizontally. As a result, the lifting device can only unload materials at the nearest unloading point, which is very inconvenient to use.

[0005] Chinese patent CN202120976680.6 discloses a material lifting device for building construction. The technical solution includes an installation frame with a hopper for holding materials. A driving device is also installed on the installation frame and connected to the hopper. A support frame for supporting the installation is also installed on the installation frame. The support frame includes a horizontal bar and a vertical bar. The end of the horizontal bar is rotatably connected to the installation frame. The vertical bar is vertically fixed to the horizontal bar. A connecting sleeve is rotatably installed at the end of the vertical bar away from the horizontal bar. The connecting sleeve is slidably connected to the installation frame. A fixing element is provided on the connecting sleeve to fix its position.

[0006] This technical solution can only lift materials at a fixed point. When the position of the unloaded material changes, the position or direction of the device must be changed. However, this technical solution uses outriggers for support, which makes movement very inconvenient. Summary of the Invention

[0007] In view of the problems existing in the prior art, the present invention discloses a material lifting device for building construction projects. The technical solution adopted includes a chassis, a lifting frame, and a slide rail. A platform is mounted on the chassis, and a turntable is rotatably connected to the platform. The lifting frame is mounted on the turntable. The lifting frame is equipped with a lifting mechanism, a lateral movement mechanism, and a conversion mechanism. The lifting mechanism can lift materials from a low position to a high position, the lateral movement mechanism can transfer materials from the lifting mechanism to the unloading point, and the conversion mechanism can transfer materials from the lifting mechanism to the lateral movement mechanism. A hopper is mounted on the lifting mechanism for loading materials.

[0008] As a preferred embodiment of the present invention, the chassis is a tracked chassis, and the chassis is equipped with a drive mechanism and a control mechanism. The drive mechanism can drive the chassis, and the control mechanism includes a microprocessor that can control all action units. The platform has a driver's cab, and the driver's cab has a control panel that allows the driver to issue control commands. The driver's cab is connected to the drive mechanism, and the driver can control the movement of the chassis from inside the driver's cab. The control panel is connected to the microprocessor.

[0009] As a preferred embodiment of the present invention, the driving mechanism includes a rotary motor mounted on the platform. The output end of the rotary motor is equipped with a bevel gear, and a gear disk is mounted on the vertical sidewall of the turntable. The gear disk is coaxially arranged with the turntable, and the gear disk has bevel teeth that mesh with the bevel gear. The rotary motor is connected to the microprocessor and the control panel. The rotation of the rotary motor can drive the turntable to rotate, change the orientation of the hopper, and unload materials at different unloading points.

[0010] As a preferred embodiment of the present invention, the platform is further equipped with a stabilizing frame, which is a hydraulic rod with a stabilizing plate at its end; the control mechanism further includes a hydraulic drive mechanism, which is connected to the microprocessor and the hydraulic rod, and the stabilizing plate can be brought into contact with the ground by extending the hydraulic rod to support the stable chassis.

[0011] In a preferred embodiment of the present invention, the lifting mechanism includes a lifting seat, a sliding rod, a wire rope, a winch, and a guide wheel. The sliding rod is mounted on the lifting frame, and the lifting seat is slidably connected to the sliding rod. The turntable also has a winch and a lifting motor, and the lifting motor is connected to the winch. A guide wheel is installed on the inner top surface of the lifting frame. The winch has a wire rope that passes around the guide wheel and connects to the top surface of the lifting seat. The lifting seat is connected to the hopper via a connecting arm. The lifting motor is connected to the microprocessor. The lifting mechanism can lift the lifting seat, thereby lifting the hopper and realizing the lifting of materials.

[0012] As a preferred embodiment of the present invention, the connecting arm is a right-angle arm, and the hopper and the connecting arm are hinged together; it also includes an electric cylinder, the two ends of which are respectively hinged to the connecting arm and the hopper, and the angle between the hopper and the connecting arm can be controlled by the extension and retraction of the electric cylinder, thereby controlling the loading and unloading of materials.

[0013] As a preferred embodiment of the present invention, the transverse transfer mechanism includes a slide rail, a transverse transfer motor, a lead screw, and a bearing seat. The slide rail is transversely mounted on the lifting frame, the lifting frame is equipped with the transverse transfer motor, the slide rail has a bearing seat, and a lead screw is installed between the transverse transfer motor and the bearing seat. A slider is engaged with the lead screw. The slide rail has a groove, and the slider is slidably connected in the groove. By rotating the lead screw, the hopper is driven to slide along the groove using the lead screw principle, thereby realizing the transverse transfer of materials.

[0014] As a preferred embodiment of the present invention, the conversion mechanism includes a limiting hook, a insert arm, and an unlocking rod; the lifting seat has a receiving groove and a slot, the receiving groove communicating with the top surface of the lifting seat, the slot communicating with the end face of the lifting seat, and the receiving groove communicating with the slot; a limiting hook is slidably connected in the receiving groove, a first spring is press-fitted between the limiting hook and the receiving groove, the limiting hook is L-shaped with an upward-facing hook head at its end; an unlocking rod is mounted on the lifting frame, the unlocking rod corresponding to the upper end slot opening of the receiving groove in terms of position and size; the connecting arm has an insert arm at its end, the insert arm corresponding to the slot in terms of position and size, and the insert arm has a hook... The slider has a corresponding hook groove with matching dimensions. A first spring pushes the limiting hook upward, and the hook head is inserted into the hook groove to form a limit between the insert arm and the lifting seat, preventing the insert arm from slipping out of the slot. The unlocking rod on the lifting frame can release the limit between the limiting hook and the insert arm when the lifting seat rises to the highest position. The slider has a limiting groove on its side. The connecting arm has a transition groove with a corresponding position and matching dimensions to the slider. There are side compartments on both sides of the transition groove. The side compartments are equipped with electromagnets and are slidably connected to insert blocks. The insert blocks are iron blocks. A second spring is pressed between the insert blocks and the side compartments. The second spring pops the insert blocks out and inserts them into the limiting groove, forming a limit between the slider and the connecting arm.

[0015] The beneficial effects of this invention are as follows: By setting up a tracked chassis, the invention facilitates the movement of the lifting device to the material lifting point. The turntable allows for changing the orientation of the hopper, facilitating unloading of materials to different unloading points. Furthermore, by incorporating a lateral movement mechanism and a conversion mechanism, after the material is lifted to the unloading height, the conversion mechanism transfers the hopper to the lateral movement mechanism, which then moves the hopper laterally to unloading points at different horizontal distances from the lifting device. This makes material lifting and transfer more convenient. Therefore, this invention can adapt to different building environments, meeting usage requirements even in construction environments where it is inconvenient to install the lifting device near the unloading point.

[0016] Furthermore, by setting up a tracked chassis and a stabilizing frame, the position of the lifting device can be changed by driving the tracked chassis, making operation more convenient and use more convenient. When materials need to be lifted, the chassis can be supported by the stabilizing frame, making the lifting of materials more stable. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the lifting seat in the limiting state of the present invention;

[0019] Figure 3This is a schematic diagram of the internal structure of the lifting seat of the present invention in the state of being released from its limiting position;

[0020] Figure 4 This is a schematic diagram of the internal structure of the side compartment of the present invention;

[0021] Figure 5 This is a schematic diagram of the lateral transport state of the present invention;

[0022] Figure 6 This is a schematic diagram of the unloading state of the present invention;

[0023] Figure 7 This is a schematic diagram of the cross-sectional structure of the chute of the present invention;

[0024] Figure 8 This is a top view of the chute structure of the present invention;

[0025] Figure 9 This is a schematic diagram of the surface layout of the platform of the present invention.

[0026] In the diagram: 1. Chassis; 101. Platform; 102. Cab; 2. Turntable; 3. Lifting frame; 4. Stabilizer; 5. Rotary motor; 6. Gear disk; 7. Bevel gear; 8. Lifting seat; 801. Limit hook; 802. Receiving groove; 803. First spring; 804. Slot; 9. Connecting arm; 901. Insertion arm; 902. Side compartment; 903. Electromagnet; 904. Second spring; 905. Insertion block; 906. Adapter groove; 10. Unlocking rod; 11. Hopper; 12. Electric cylinder; 13. Slide rod; 14. Wire rope; 15. Winch; 16. Guide wheel; 17. Slide rail; 1701. Slide groove; 18. Transverse motor; 19. Lead screw; 20. Bearing seat; 21. Slider; 22. Limit groove. Detailed Implementation

[0027] The technical solution of the present invention will now be clearly and completely described in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] Example 1

[0030] like Figures 1 to 9 As shown, this invention discloses a material lifting device for building construction projects. The technical solution includes a chassis 1, a lifting frame 3, and a slide rail 17. A platform 101 is mounted on the chassis 1, and a turntable 2 is rotatably connected to the platform 101. The lifting frame 3 is mounted on the turntable 2. The lifting frame 3 is equipped with a lifting mechanism, a lateral movement mechanism, and a conversion mechanism. A hopper 11 is mounted on the lifting mechanism. Materials are loaded into the hopper 11, lifted by the lifting mechanism, and then converted by the conversion mechanism to transfer the hopper 11 from the lifting mechanism to the lateral movement mechanism. The lateral movement mechanism then transports the hopper 11 to the unloading point for unloading.

[0031] As a preferred embodiment of the present invention, the chassis 1 is a tracked chassis, and the chassis 1 is equipped with a drive mechanism and a control mechanism. The drive mechanism includes an engine and a drive shaft, the engine and the drive shaft are connected, and the drive shaft is connected to the travel wheels of the tracked chassis. The control mechanism includes a microprocessor. The platform 101 has a cab 102, and the cab 102 has a control panel. The cab 102 is connected to the drive mechanism, and the control panel is connected to the microprocessor.

[0032] As a preferred embodiment of the present invention, the driving mechanism includes a rotary motor 5, which is mounted on the platform 101. The output end of the rotary motor 5 is equipped with a bevel gear 7. A gear disk 6 is mounted on the vertical side wall of the turntable 2. The gear disk 6 is coaxially arranged with the turntable 2 and has conical teeth that mesh with the bevel gear 7. The rotary motor 5 is connected to the microprocessor and the control panel. The rotary motor 5 drives the gear disk 6 to rotate via the bevel gear 7, thereby driving the turntable 2 to rotate and change the orientation of the hopper 11.

[0033] As a preferred embodiment of the present invention, the platform 101 is further equipped with a stabilizer 4, which is a hydraulic rod with a stabilizer plate at the end and a reinforcing rib between the stabilizer plate and the hydraulic rod; the control mechanism further includes a hydraulic drive mechanism, which is connected to the microprocessor and the hydraulic rod. After the control panel issues a command, the microprocessor controls the hydraulic drive mechanism to extend the hydraulic rod to support and stabilize the chassis 1.

[0034] As a preferred embodiment of the present invention, the lifting mechanism includes a lifting seat 8, a slide rod 13, a wire rope 14, a winch 15, and a guide wheel 16. The slide rod 13 is mounted on the lifting frame 3, and the lifting seat 8 is slidably connected to the slide rod 13. The turntable 2 also has a winch 15 and a lifting motor, and the lifting motor is connected to the winch 15. The guide wheel 16 is mounted on the inner top surface of the lifting frame 3. The winch 15 has a wire rope 14, which passes around the guide wheel 16 and connects to the top surface of the lifting seat 8. The lifting seat 8 is connected to the hopper 11 through a connecting arm 9. The lifting motor is connected to the microprocessor. The lifting motor controls the winch 15 to rotate and wind up and unwind the wire rope 14 to control the lifting and lowering of the lifting seat 8.

[0035] As a preferred embodiment of the present invention, the connecting arm 9 is a right-angle arm, and the hopper 11 and the connecting arm 9 are hinged together; it also includes an electric cylinder 12, the two ends of which are respectively hinged to the connecting arm 9 and the hopper 11, and the extension of the electric cylinder 12 can control the hopper 11 to flip over and unload materials.

[0036] As a preferred embodiment of the present invention, the transverse movement mechanism includes a slide rail 17, a transverse movement motor 18, a lead screw 19, and a bearing seat 20. The slide rail 17 is horizontally mounted on the lifting frame 3. The lifting frame 3 is equipped with the transverse movement motor 18. The slide rail 17 has a bearing seat 20. The lead screw 19 is installed between the transverse movement motor 18 and the bearing seat 20. The mechanism also includes a slider 21 with a threaded hole. The lead screw 19 meshes with the threaded hole. The slide rail 17 has a groove 1701, and the slider 21 is slidably connected within the groove 1701.

[0037] As a preferred embodiment of the present invention, the conversion mechanism includes a limiting hook 801, a insert arm 901, and an unlocking rod 10; the lifting seat 8 has a receiving groove 802 and a slot 804, the receiving groove 802 is connected to the top surface of the lifting seat 8, the slot 804 is connected to the end surface of the lifting seat 8, and the receiving groove 802 and the slot 804 are connected; the limiting hook 801 is slidably connected in the receiving groove 802, and a first spring 803 is press-fitted between the limiting hook 801 and the receiving groove 802; the limiting hook 801 is an L-shaped hook with an upward-facing hook head at the end; the lifting frame 3 is equipped with an unlocking rod 10, and the unlocking rod 10 and the receiving groove 802 are connected... 02 The upper slot is positioned and matched in size; the end of the connecting arm 9 has an insert arm 901, the insert arm 901 and the slot 804 are positioned and matched in size, the insert arm 901 has a hook groove that is positioned and matched in size with the hook head; the slider 21 has a limit groove 22 on its side; the connecting arm 9 has a transition groove 906 that is positioned and matched in size with the slider 21, the transition groove 906 has side compartments 902 on both sides, the side compartments 902 are equipped with electromagnets 903 and are slidably connected to insert blocks 905, the insert blocks 905 are iron blocks, and a second spring 904 is press-fitted between the insert blocks 905 and the side compartments 902.

[0038] The working principle of this invention is as follows: by driving the chassis 1 in the cab 102 to move the lifting device to the material lifting point, the control panel is operated to make the hydraulic drive mechanism work, so that the hydraulic rod of the stabilizer 4 is extended, and the stabilizer plate is supported on the ground to stabilize the chassis.

[0039] The material to be lifted is placed in the hopper 11. The control panel controls the rotary motor 5 to rotate. The rotary motor 5 is driven by the bevel gear 7 and the gear disk 6, which drives the turntable 2 to rotate, so that the hopper 11 faces the unloading point. The lifting program is started. The microprocessor controls the lifting motor to rotate. The lifting motor drives the winch 15 to start winding the wire rope 14. The wire rope 14 is turned by the guide wheel 16 and pulls the lifting seat 8 to slide upward along the slide bar 13, so that the connecting arm 9 pulls the hopper 11 to lift the material upward. When the material is lifted to the set height, the unlocking rod 10 is inserted into the receiving groove 802 of the lifting seat 8, thereby squeezing the limiting hook 801 into the groove and compressing the first spring 803. The hook head disengages from the hook groove of the insert arm 901, releasing the limiting hook 801 from limiting the insert arm 901; simultaneously, the microprocessor de-energizes the electromagnet 903 in the side compartment 902, and the insert block 905 pops out under the action of the second spring 904, inserting into the limiting groove 22 of the slider 21, connecting the connecting arm 9 to the slider 21, starting the transverse motor 18, which drives the lead screw 19 to rotate on the bearing seat 20. Because the slider 21 has a threaded hole that meshes with the lead screw 19, and the slider 21 is slidably connected in the slide groove 1701 of the slide rail 17, the transverse motor 18, the slide rail 17, the slider 21 and the lead screw 19 form a lead screw mechanism. As the lead screw 19 rotates, it drives the slider 21 to slide along the slide groove 1701.

[0040] After sliding to the unloading point, the microprocessor drives the electric cylinder 12 to extend, causing the hopper 11 to flip and unload.

[0041] The transverse motor 18 reverses, which can reset the slider 21. During the reset process, the insert arm 901 on the connecting arm 9 is inserted into the slot 804 of the lifting seat 8. After the reset is completed, the microprocessor energizes the electromagnet 903, attracts the insert block 905, and makes it disengage from the limiting groove 22, releasing the limit between the slider 21 and the connecting arm 9. The reverse lifting motor drives the winch 15 to reverse and release the wire rope 14. The lifting seat 8, the connecting arm 9 and the hopper 11 begin to descend along the slide bar 13 under their own gravity until the unlocking rod 10 completely disengages from the receiving groove 802. The limiting hook 801 in the lifting seat 8 resets under the action of the first spring 803, and the hook head enters the hook groove, forming a limit between the lifting seat 8 and the insert arm 901 to prevent the insert arm 901 from slipping out of the slot 804.

[0042] The microprocessor involved in this invention uses an Atmel 89C51 microcontroller to start and stop motors and control electromagnets. Those skilled in the art can obtain technical inspiration for the pinout and connection methods of the 89C51 by referring to textbooks or technical manuals published by manufacturers. The circuit connection involved in this invention is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. It is common knowledge.

[0043] Components not described in detail in this article are existing technologies.

[0044] While the specific embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention, and modifications or variations without creative effort are still within the protection scope of the present invention.

Claims

1. A material lifting device for a housing construction work, characterized by: The utility model relates to a kind of lifting platform, including chassis (1), lifting frame (3) and slide (17), the platform (101) is equipped on the chassis (1), the platform (101) is rotatably connected with carousel (2), the lifting frame (3) is equipped on carousel (2), lifting mechanism, horizontal moving mechanism and conversion mechanism are equipped on the lifting frame (3);Lifting mechanism is equipped with hopper (11).

2. The material lifting device for housing construction according to claim 1, characterized in that: The chassis (1) is tracked walking chassis, driving mechanism, control mechanism are equipped in the chassis (1), the control mechanism includes microprocessor, there is cab (102) on the platform (101), there is control panel in the cab (102), the cab (102) is connected with the driving mechanism, the control panel is connected with the microprocessor.

3. The material lifting device for housing construction according to claim 2, characterized in that: The driving mechanism includes rotary motor (5), the rotary motor (5) is installed on the platform (101) The output end of the rotary motor (5) is equipped with conical gear (7), the vertical side wall of carousel (2) is equipped with gear disc (6), the gear disc (6) is coaxially arranged with carousel (2), and the gear disc (6) has conical gear teeth meshed with the conical gear (7);The rotary motor (5) is connected with the microprocessor, the control panel.

4. The material lifting device for housing construction according to claim 2, characterized in that: The platform (101) is further equipped with stabilizer (4), the stabilizer (4) is hydraulic rod, and end is equipped with stabilizing plate;The control mechanism further includes hydraulic drive mechanism, the hydraulic drive mechanism is connected with the microprocessor, the hydraulic rod.

5. The material lifting device for housing construction work according to claim 2, characterized in that: The lifting mechanism includes lifting seat (8), slide rod (13), steel wire rope (14), winch (15) and guide wheel (16), the slide rod (13) is installed on the lifting frame (3), and the lifting seat (8) is slidably connected on the slide rod (13), the carousel (2) further has winch (15) and lifting motor, the lifting motor is connected with the winch (15), the guide wheel (16) is installed on the top surface in the lifting frame (3), the winch (15) has steel wire rope (14), the steel wire rope (14) passes through the guide wheel (16) and connects the top surface of the lifting seat (8), the lifting seat (8) is connected with the hopper (11) by connecting arm (9), the lifting motor is connected with the microprocessor.

6. The material lifting device for housing construction work according to claim 5, characterized in that: The connecting arm (9) is right angle arm, the hopper (11) and the connecting arm (9) are hinged;Further include electric cylinder (12), the electric cylinder (12) is hinged with the connecting arm (9) and the hopper (11) respectively at both ends.

7. The material lifting device for housing construction work according to claim 6, characterized in that: The horizontal moving mechanism includes slide (17), horizontal moving motor (18), lead screw (19) and bearing seat (20), the slide (17) is transversely installed on the lifting frame (3), the horizontal moving motor (18) is installed on the lifting frame (3), the slide (17) has bearing seat (20), the horizontal moving motor (18) and the bearing seat (20) are equipped with lead screw (19), the lead screw (19) is engaged with sliding block (21);The slide (17) has slide groove (1701), the sliding block (21) is slidably connected in the slide groove (1701).

8. The material lifting device for housing construction work according to claim 7, characterized in that: The conversion mechanism comprises a limiting hook (801), an insertion arm (901) and an unlocking rod (10); the lifting seat (8) is provided with an accommodating groove (802) and an insertion groove (804), the accommodating groove (802) is communicated with the top surface of the lifting seat (8), the insertion groove (804) is communicated with the end surface of the lifting seat (8), and the accommodating groove (802) and the insertion groove (804) are communicated; the limiting hook (801) is slidably connected in the accommodating groove (802), the first spring (803) is press-fitted between the limiting hook (801) and the accommodating groove (802), the limiting hook (801) is an L-shaped hook, and the end portion is provided with an upward hook head; the unlocking rod (10) is arranged on the lifting frame (3), the unlocking rod (10) and the upper end slot of the accommodating groove (802) correspond in position and match in size; the insertion arm (901) is arranged at the end portion of the connecting arm (9), the insertion arm (901) and the insertion groove (804) correspond in position and match in size, the insertion arm (901) is provided with a hook groove corresponding in position and matching in size with the hook head, the limiting groove (22) is formed in the side surface of the sliding block (21), the adapter groove (906) corresponding in position and matching in size with the sliding block (21) is formed in the connecting arm (9), the adapter groove (906) is provided with side warehouses (902) on both sides, the electromagnet (903) is arranged in the side warehouses (902), and the insertion block (905) is slidably connected in the side warehouses (902), the insertion block (905) is an iron block, and the second spring (904) is press-fitted between the insertion block (905) and the side warehouses (902).

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