Load electric locking and unlocking device

Abstract

The utility model relates to the technical field of electric locking and unlocking, and discloses a load electric locking and unlocking device which comprises a base and two locking assemblies, the base is arc-shaped, the opening of the base faces upwards, the number of the locking assemblies is two, the two locking assemblies are symmetrically installed at the two ends of the bottom face of the base, and the locking assemblies are arranged on the base. The locking assembly comprises an electric driving mechanism, a ball screw pair, a lock hook and an angle block, and the electric driving mechanism is used for driving the ball screw pair to stretch out or retract to drive the lock hook to press or loosen the angle block so as to lock or unlock the load. The electric driving mechanism drives the ball screw pair to drive the lock hook to press or loosen the angle block to achieve locking and unlocking, the mechanism does not have a dead point position in a working interval, the ball screw pair does not have self-locking, self-locking can disappear instantly during unlocking, and reliable unlocking is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric locking and unlocking technical field, specifically, it relates to a load electric locking and unlocking device. BACKGROUND

[0002] Traditional large-tonnage load is mostly hydraulic drive mode, has the advantages such as large bearing capacity, hydraulic buffering, unloading without mechanical jam, and the electric mechanism is mostly motor-driven mechanical transmission mechanism, and the required power source is usually large, and the transmission mechanism is complex, with the rapid development of electric drive, electric drive gradually replaces complex and heavy hydraulic drive with the advantages such as compact structure, easy maintenance and simple operation, and electric drive is also developing towards large load, and large-tonnage, multi-stage electric cylinder is applied to simulator, lifting, erecting and other industrialized products with high precision and reliability.

[0003] This product has the advantages of traditional structure self-locking, and mostly adopts electric drive locking and unlocking action, and adopts mechanical structure bearing to bear, avoids load transmission to the driving device, that is, the mode of driving and bearing separation, improves space utilization and cost, and realizes reliable locking in limited space. But this traditional mode has dead point under the condition of unlocking with load. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a load electric locking and unlocking device to solve the technical problems in the prior art.

[0005] In order to realize the above-mentioned purpose, the utility model provides a load electric locking and unlocking device, which comprises:

[0006] The base is arc-shaped, and the opening faces upward;

[0007] The locking assembly is provided with two, two locking assemblies are symmetrically installed at both ends of the bottom surface of the base, and the locking assembly comprises an electric drive mechanism, a ball screw pair, a lock hook and an angle block, the mounting end of the electric drive mechanism is hinged to the bottom surface of the base, the output end of the electric drive mechanism is in transmission connection with the ball screw pair, one end of the ball screw pair away from the electric drive mechanism is in transmission connection with the side surface of the lock hook, the bottom end of the lock hook is hinged to the bottom surface of the base, the angle block is arranged on the load, and the electric drive mechanism is used for driving the ball screw pair to extend or retract, thereby driving the lock hook to press or release the angle block, and locking or unlocking the load.

[0008] Preferably, the electric drive mechanism comprises a mounting shell and an electric motor arranged in the mounting shell, the ball screw pair is arranged in the mounting shell, the bottom of the mounting shell is hingedly connected to the bottom surface of the base, the ball screw pair is in transmission connection with the output shaft of the electric motor, and the ball screw pair is used for converting the rotary motion of the electric motor into linear motion.

[0009] Preferably, the electric motor and the ball screw pair are in transmission through a transmission mechanism arranged in the mounting shell, the transmission mechanism comprises a transmission gear arranged on the output shaft of the electric motor, an intermediate gear in mutual meshing with the transmission gear, and a driven gear in meshing with the intermediate gear, and the driven gear is in transmission connection with the ball screw pair.

[0010] Preferably, the electric drive mechanism further comprises a brake connected with the electric motor.

[0011] Preferably, the electric drive mechanism further comprises a manual switching mechanism, the manual switching mechanism comprises a transmission shaft, a top block sleeved outside the transmission shaft, a compression spring, a push block, a threaded tube, a tightening nut, and a push rod arranged between the intermediate gear and the push block, the transmission shaft is sleeved in the middle part of the intermediate gear, the top end thereof is in rotary connection with the top of the inner cavity of the mounting shell, and the bottom end thereof extends downward and out of the mounting shell, the intermediate gear is movable up and down relative to the transmission shaft, the top block and the push rod are arranged at the top and the bottom of the intermediate gear respectively, the compression spring is arranged between the top block and the top wall of the inner cavity of the mounting shell, the top block and the push rod are always in a stationary state when the intermediate gear rotates, the threaded tube is arranged at the bottom of the mounting shell, the push block is movably sleeved outside the threaded tube, the bottom of the push rod extends downward out of the mounting shell and is fixedly connected with the push block, and the tightening nut is threadedly sleeved outside the threaded tube and abuts against the push block.

[0012] Preferably, the manual switching mechanism further comprises a protective cover sleeved outside the tightening nut.

[0013] Preferably, the locking assembly further comprises a limit switch arranged on the base.

[0014] Preferably, the bottom side of the base is provided with an L-shaped mounting lug, the mounting end of the electric drive mechanism is hingedly connected to the end of the horizontal rod of the mounting lug, and the bottom end of the locking hook is hingedly connected to the end of the vertical rod of the mounting lug.

[0015] Preferably, the hook is in the shape of "7", the end of the vertical rod of the hook is hinged with the end of the vertical rod of the mounting lug, the side of the vertical rod of the hook is hinged with the output end of the electric drive mechanism, the electric drive mechanism drives the horizontal rod of the hook to press or release the angle block to lock or unlock the load.

[0016] Preferably, an adjusting bolt is arranged on the horizontal rod of the hook.

[0017] The load electric locking and unlocking device has the advantages that:

[0018] The locking and unlocking are realized by the electric drive mechanism driving the ball screw pair to drive the hook to press or release the angle block, the mechanism itself has no dead point position in the working range, and the ball screw pair has no self-locking, the self-locking can be disappeared instantly when unlocking, and the unlocking is reliable.

[0019] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, and are used together with the following detailed description to explain the present application, but do not constitute a limitation on the present application. In the drawings:

[0021] Figure 1 A structure schematic view of a load electric locking and unlocking device of an embodiment of the present application is shown;

[0022] Figure 2 An assembly schematic view of a load electric locking and unlocking device and a load of an embodiment of the present application is shown;

[0023] Figure 3 A locking state schematic view of a load electric locking and unlocking device of an embodiment of the present application is shown;

[0024] Figure 4 An unlocking state schematic view of a load electric locking and unlocking device of an embodiment of the present application is shown;

[0025] Figure 5 An internal structure schematic view of a mounting shell of an embodiment of the present application (automatic state) is shown;

[0026] Figure 6 An internal structure schematic view of a mounting shell of an embodiment of the present application (manual state) is shown;

[0027] Figure 7 A mechanical analysis diagram of a locking assembly of an embodiment of the present application is shown.

[0028] Explanation of reference signs:

[0029] 1 base, 11 mounting lug, 12 bottom mounting seat;

[0030] 2 locking assembly, 21 electric drive mechanism, 22 ball screw pair, 23 locking hook, adjusting bolt, 24 angle block, 25 limit switch;

[0031] 211 mounting shell, 212 motor, 213 transmission mechanism, 214 brake, 215 manual switching mechanism;

[0032] 2131 transmission gear, 2132 intermediate gear, 2133 driven gear;

[0033] 2151 transmission shaft, 2152 top block, 2153 compression spring, 2154 push block, 2155 threaded tube, 2156 top nut, 2157 push rod, 2158 protective cover. DETAILED DESCRIPTION

[0034] The specific embodiments of the utility model are described in detail below in combination with the drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model.

[0035] Please refer to Figures 1-7 The embodiment provides a load electric locking and unlocking device, which comprises a base 1 and two locking assemblies 2. Wherein the base 1 is arc-shaped, the opening faces upward, specifically an arc-shaped support, the top surface is shaped to be matched with the shape of the outer wall of the load, so that the load can be better installed. The middle part of the bottom of the base 1 is provided with a bottom mounting seat 12, the four corners of the bottom mounting seat 12 are provided with mounting holes, and the base 1 is fixed on the vehicle through the mounting holes by screws. The two ends of the side surface of the base 1 are provided with mounting lug 11, in the embodiment, the mounting lug 11 is L-shaped, which is connected by a horizontal rod and a vertical rod, and is used for mounting the locking assembly 2.

[0036] Two locking assemblies 2 are symmetrically installed at the two ends of the bottom surface of the base 1. The locking assembly 2 comprises an electric drive mechanism 21, a ball screw pair 22, a locking hook 23, and an angle block 24. The mounting end of the electric drive mechanism 21 is hinged to the bottom surface of the base 1. The output end of the electric drive mechanism 21 is in transmission connection with the ball screw pair 22. The end of the ball screw pair 22 away from the electric drive mechanism 21 is in transmission connection with the side surface of the locking hook 23. The bottom end of the locking hook 23 is hinged to the bottom surface of the base 1. The angle block 24 is arranged on the load. The electric drive mechanism 21 is used to drive the ball screw pair 22 to extend or retract, thereby driving the locking hook 23 to press or release the angle block 24, and thereby locking or unlocking the load. Specifically, the mounting end of the electric drive mechanism 21 is hinged to the end of the horizontal rod of the mounting lug 11. The bottom end of the locking hook 23 is hinged to the end of the vertical rod of the mounting lug 11. In this embodiment, the locking hook 23 is in the shape of "7". The end of the vertical rod of the locking hook 23 is hinged to the end of the vertical rod of the mounting lug 11. The side surface of the vertical rod of the locking hook 23 is hinged to the output end of the electric drive mechanism 21. The electric drive mechanism 21 drives the horizontal rod of the locking hook 23 to press or release the angle block 24, thereby locking or unlocking the load.

[0037] The working principle of the ball screw pair is to convert rotary motion into linear motion by using balls to roll on the screw threads. The ball screw pair is composed of a screw, a nut, and balls. The balls are arranged in a ball circulation channel in the nut. When the screw rotates, the balls roll in the channel, pushing the nut to move axially along the screw. This structural design makes the ball screw pair have high efficiency and carrying capacity, and is suitable for working environments that require high precision and high load. In this embodiment, the electric drive mechanism 21 drives the screw of the ball screw pair 22 to rotate, and the nut of the ball screw pair 22 moves axially along the screw, thereby driving the locking hook 23 to press or release the angle block 24. Specifically, a push rod can be arranged on the nut. The nut and the locking hook 23 are connected through the push rod. The locking hook 23 is hinged to the push rod. It should be noted that the hinges in this embodiment are all hinged by pin shafts.

[0038] Preferably, the electric drive mechanism 21 comprises a mounting shell 211 and an electric motor 212 arranged in the mounting shell 211. The ball screw pair 22 is arranged in the mounting shell 211. The bottom of the mounting shell 211 is hinged to the bottom surface of the base 1. The ball screw pair 22 is in transmission connection with the output shaft of the electric motor 212. The ball screw pair 22 is used to convert the rotary motion of the electric motor 212 into linear motion. The electric drive mechanism 21 further comprises a brake 214 connected with the electric motor 212.

[0039] In the embodiment, the brake 214 is electromagnetically connected with the motor 212, which is a common connection in the prior art. The brake 214 and the motor 212 are not improved in the embodiment. The working principle is that the tail shaft of the motor 212 is connected with the brake pad of the brake 214. When the coil assembly is powered, the armature plate is attracted downward by the magnetic force generated by the coil to disengage from the brake pad, and the shaft of the motor 212 can normally rotate. When the coil assembly is powered off, the magnetic field disappears, and the armature plate is reset under the action of the spring force to engage with the brake pad to brake, and the shaft of the motor 212 cannot rotate.

[0040] The locking and unlocking device in the embodiment adopts a ball screw pair 22 with no resistance and high transmission efficiency to drive the lock hook 23 to unlock, and a small torque brake 214 at the end of the motor 212 to brake to realize locking, ensuring that the large tonnage bearing and large load are unlocked with no resistance, the overall structure adopts a similar connecting rod slider mechanism, there is no dead point in the unlocking interval, the load force is effectively converted into the driving force for unlocking, the unlocking is reliable, the contradiction between locking and unlocking is solved, the unlocking is realized with no resistance or small resistance, the unlocking is ensured to be smooth, and the conventional screw nut pair with self-locking is broken through to realize locking bearing.

[0041] Preferably, the motor 212 is driven through a transmission mechanism 213 between the motor 212 and the ball screw pair 22. The transmission mechanism 213 is arranged in the mounting shell 211. The transmission mechanism 213 includes a transmission gear 2131 arranged on the output shaft of the motor 212, an intermediate gear 2132 meshing with the transmission gear 2131, and a driven gear 2133 meshing with the intermediate gear 2132. The driven gear 2133 is in driving connection with the ball screw pair 22. The ball screw pair 22 is driven in a gear transmission mode, the transmission principle is simple, and the structure is compact. Of course, the transmission can also be achieved by connecting a chain wheel and a chain, and a belt and a belt pulley. The motor 212 realizes large load linear driving through the transmission mechanism 213 and the ball screw pair 22, has no self-locking function, is convenient for unlocking with small resistance or even no resistance, and achieves the purpose of reliable unlocking.

[0042] Please refer to Figure 5 and Figure 6, the electric drive mechanism 21 further comprises a manual switching mechanism 215, which cuts off the brake, and when manually switched, the overall structure is not self-locking, ensuring reliable unlocking. The manual switching mechanism 215 comprises a transmission shaft 2151, a top block 2152 sleeved outside the transmission shaft 2151, a compression spring 2153, a push block 2154, a threaded tube 2155, a tight nut 2156, and a push rod 2157 arranged between the intermediate gear 2132 and the push block 2154. The transmission shaft 2151 is sleeved in the middle part of the intermediate gear 2132, the top end is rotatably connected with the top of the inner cavity of the mounting shell 211, and the bottom end extends out of the mounting shell 211. The intermediate gear 2132 can move up and down relative to the transmission shaft 2151. The top block 2152 and the push rod 2157 are arranged at the top and bottom of the intermediate gear 2132 respectively. The compression spring 2153 is arranged between the top block 2152 and the top wall of the inner cavity of the mounting shell 211. When the intermediate gear 2132 rotates, the top block 2152 and the push rod 2157 are always in a stationary state. The threaded tube 2155 is arranged at the bottom of the mounting shell 211, the push block 2154 is movably sleeved outside the threaded tube 2155, the bottom of the push rod 2157 extends out of the mounting shell 211 and is fixedly connected with the push block 2154, and the tight nut 2156 is threadedly sleeved outside the threaded tube 2155 and abuts against the push block 2154.

[0043] In this embodiment, in order to facilitate the up and down movement of the intermediate gear 2132, an over gear can be nested outside the transmission shaft 2151, and the intermediate gear 2132 is sleeved outside the over gear. The inner side of the intermediate gear 2132 is provided with internal teeth that mesh with the external teeth of the over gear. In this way, when the transmission shaft 2151 rotates, the intermediate gear 2132 can be driven to rotate by the over gear. When adjusting the up and down movement of the intermediate gear 2132, the teeth of the over gear can provide guidance and track for it, ensuring the safe operation of the equipment. In addition, bearings are arranged at the connection between the transmission shaft 2151 and the mounting shell 211 to improve the transmission efficiency. In addition, in order to keep the top block 2152 and the push rod 2157 in a stationary state when the intermediate gear 2132 rotates, a bearing can also be arranged at the bottom of the intermediate gear 2132, and the push rod 2157 is drivingly connected with the bearing (of course, a similar design can also be made between the intermediate gear 2132 and the top block 2152). Furthermore, a guide hole or a linear bearing is arranged at the connection between the push rod 2157 and the mounting shell 211, ensuring that the push rod 2157 can move up and down while stably operating.

[0044] Please refer to Figure 5 , Figure 6 and Figure 7, specifically, in the automatic state, the driving gear 2131, the intermediate gear 2132 and the driven gear 2133 are in meshing transmission. When it is needed to switch to the manual state, the top nut 2156 can be rotated, and the top nut 2156 is screwed upward under the action of the thread, thereby pushing the push block 2154 upward, and then moving the intermediate gear 2132 upward through the push rod 2157 to press the compression spring 2153, so that the intermediate gear 2132 is disengaged from the driving gear 2131, and the driven gear 2133 is disengaged from the motor 212 brake, realizing electric / manual switching. After manual switching, the locking device is in a free state, and the whole mechanism is not self-locking, that is, it can realize resistance-free unlocking. Specifically, the push rod can be extended and retracted by external force or a tool to rotate the transmission shaft 2151, thereby realizing unlocking. The intermediate gear 2132 in the embodiment is pressed by the top nut 2156 and the compression spring 2153 to ensure that the intermediate gear 2132 can rotate stably, so that the intermediate gear 2132 does not move up and down when rotating, thereby improving the stability of transmission.

[0045] Preferably, the manual switching mechanism 215 further comprises a protective cover 2158, which is sleeved on the outside of the top nut 2156. The protective cover 2158 can improve the safety of the device. When manual switching is needed, the protective cover 2158 can be removed for manual adjustment.

[0046] Preferably, the locking assembly 2 further comprises a limit switch 25 arranged on the base 1. The limit switch 25 can detect whether the locking hook 23 is in a locked state or an unlocked state, thereby facilitating subsequent operation.

[0047] Specifically, the horizontal rod of the locking hook 23 is provided with an adjusting bolt 231 which is threadedly connected to the horizontal rod of the locking hook 23. In specific work, the adjusting bolt 231 can be rotated to adjust the depth of the adjusting bolt 231 screwed into the locking hook 23, thereby making the large head end of the adjusting bolt 231 in contact with the horizontal surface of the corner block 24 in the locked state, and ensuring that the horizontal rod only bears a normal force.

[0048] The specific working principle includes automatic unlocking and locking and manual unlocking and locking. Please refer to Figures 3-7 .

[0049] Automatic unlocking and locking:

[0050] a) There is a gap between the locking hook 23 and the corner block 24:

[0051] Unlocking process: power on, brake 214 and motor 212 act simultaneously, brake 214 is powered on, brake 214 and motor 212 are separated, motor 212 drives the push rod to retract, the locking hook 23 swings out, the locking hook 23 and the angle block 24 are separated, and the unlocking is realized; power off, motor 212 and brake 214 are powered off simultaneously, the shaft of motor 212 and the brake pad are engaged, the brake is braked, and the unlocking is in place.

[0052] Locking process: power on, brake 214 and motor 212 act simultaneously, brake 214 is powered on, brake 214 and motor 212 are separated, motor 212 drives the push rod to extend, the locking hook 23 is driven to the locking position, the locking hook 23 contacts the angle block 24, and the locking action is realized; power off, motor 212 and brake 214 are powered off simultaneously, the shaft of motor 212 and the brake pad are engaged, the brake is braked, and the locking is in place.

[0053] b) The locking hook contacts the angle block to unlock:

[0054] The locking hook 23 generates a large tonnage contact force with the angle block 24, and the friction coefficient contact force generates a normal unlocking moment on the locking hook 23 greater than the resistance moment generated by the contact friction force, the brake balance is maintained in the locked state; the brake clutch is disengaged, the contact moment is the unlocking power, and the unlocking is reliable.

[0055] Manual unlocking and locking: tighten the top nut 2156, compress the compression spring 2153, and disengage the intermediate gear 2132 and the driving gear 2131, when the friction coefficient , the contact moment is positive, and the unlocking is automatic, when the friction coefficient , the contact moment is negative, the push rod can be extended and retracted by rotating the transmission shaft 2151 with the aid of external force or using a tool, and the unlocking is realized.

[0056] As described above, the embodiment realizes locking and unlocking by driving the locking hook to press or release the angle block through the electric drive mechanism and the ball screw pair, the mechanism itself does not have a dead point position in the working range, and the ball screw pair does not have self-locking, the self-locking can disappear instantly when unlocking, and the unlocking is reliable.

[0057] The preferred embodiments of the utility model are described in detail in combination with the drawings, but the utility model is not limited to the specific details in the above embodiments, and various simple modifications can be made to the technical solutions of the utility model within the technical concept of the utility model, and these simple modifications all belong to the protection scope of the utility model. In addition, it should be noted that various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction, and in order to avoid unnecessary repetition, the utility model will not describe various possible combination manners again.

[0058] In addition, various different embodiments of the present application can be combined arbitrarily, as long as they do not violate the spirit of the present application, and should be considered as disclosed by the present application.

Claims

1. A load electrically operated locking and unlocking device, characterized in that, It includes: Base (1), the base (1) is arc-shaped, and the opening faces upwards; Locking assembly (2), the locking assembly (2) is provided with two, two locking assemblies (2) are symmetrically installed at both ends of the bottom surface of the base (1), the locking assembly (2) includes an electric drive mechanism (21), a ball screw pair (22), a lock hook (23) and an angle block (24), the mounting end of the electric drive mechanism (21) is hinged to the bottom surface of the base (1), the output end of the electric drive mechanism (21) is in transmission connection with the ball screw pair (22), one end of the ball screw pair (22) away from the electric drive mechanism (21) is in transmission connection with the side surface of the lock hook (23), the bottom end of the lock hook (23) is hinged to the bottom surface of the base (1), the angle block (24) is arranged on the load, and the electric drive mechanism (21) is used to drive the ball screw pair (22) to extend or retract, so as to drive the lock hook (23) to press or release the angle block (24), and then lock or unlock the load.

2. The load electrically powered locking and unlocking device according to claim 1, characterized in that, The electric drive mechanism (21) includes a mounting shell (211) and an electric motor (212) arranged in the mounting shell (211), the ball screw pair (22) is arranged in the mounting shell (211), the bottom of the mounting shell (211) is hinged to the bottom surface of the base (1), the ball screw pair (22) is in transmission connection with the output shaft of the electric motor (212), and the ball screw pair (22) is used to convert the rotary motion of the electric motor (212) into linear motion.

3. The load electrically powered locking and unlocking device according to claim 2, characterized in that, The electric motor (212) and the ball screw pair (22) are in transmission through a transmission mechanism (213), the transmission mechanism (213) is arranged in the mounting shell (211), the transmission mechanism (213) includes a transmission gear (2131) arranged on the output shaft of the electric motor (212), an intermediate gear (2132) in meshing with the transmission gear (2131), and a driven gear (2133) in meshing with the intermediate gear (2132), the driven gear (2133) is in transmission connection with the ball screw pair (22).

4. The load electrically unlocking device according to claim 3, wherein The electric drive mechanism (21) further includes a brake (214) connected with the electric motor (212).

5. The load electrically operated locking and unlocking device according to claim 4, wherein The electric drive mechanism (21) further comprises a manual switching mechanism (215), the manual switching mechanism (215) comprises a transmission shaft (2151), a top block (2152) sleeved outside the transmission shaft (2151), a compression spring (2153), a push block (2154), a threaded pipe (2155), a compression nut (2156) and a push rod (2157) arranged between the intermediate gear (2132) and the push block (2154), the transmission shaft (2151) is sleeved in the middle part of the intermediate gear (2132), the top end is rotatably connected with the top of the inner cavity of the mounting shell (211), and the bottom end penetrates downward and extends out of the mounting shell (211), the intermediate gear (2132) can move up and down relative to the transmission shaft (2151), the top block (2152) and the push rod (2157) are arranged at the top and bottom of the intermediate gear (2132) respectively, the compression spring (2153) is arranged between the top block (2152) and the top wall of the inner cavity of the mounting shell (211), the top block (2152) and the push rod (2157) are always in a static state when the intermediate gear (2132) rotates, the threaded pipe (2155) is arranged at the bottom of the mounting shell (211), the push block (2154) is movably sleeved outside the threaded pipe (2155), the bottom of the push rod (2157) extends downward out of the mounting shell (211) and is fixedly connected with the push block (2154), and the compression nut (2156) is threadedly sleeved outside the threaded pipe (2155) and abuts against the push block (2154).

6. The load electrically unlocking device according to claim 5, wherein The manual switching mechanism (215) further comprises a protective cover (2158), the protective cover (2158) is sleeved outside the compression nut (2156).

7. The load electrically powered locking and unlocking device according to claim 1, wherein The locking assembly (2) further comprises a limit switch (25), and the limit switch (25) is arranged on the base (1).

8. The power operated locking and unlocking device of any of claims 1-7, wherein, The bottom side of the base (1) is provided with an L-shaped mounting lug (11), the mounting end of the electric drive mechanism (21) is hingedly connected to the end of the horizontal rod of the mounting lug (11), and the bottom end of the lock hook (23) is hingedly connected to the end of the vertical rod of the mounting lug (11).

9. The load electrically unlocking device according to claim 8, wherein The lock hook (23) is in the shape of "7", the end of the vertical rod of the lock hook (23) is hingedly connected to the end of the vertical rod of the mounting lug (11), the side surface of the vertical rod of the lock hook (23) is hingedly connected to the output end of the electric drive mechanism (21), and the electric drive mechanism (21) drives the horizontal rod of the lock hook (23) to compress or loosen the angle block (24), so as to lock or unlock the load.

10. The load electrically unlocking device according to claim 9, wherein An adjusting bolt (231) is arranged on the horizontal rod of the lock hook (23).

Images