Battery lifting tool and battery lifting appliance

Abstract

The invention belongs to the field of battery lifting, and particularly relates to a battery lifting tool and a battery lifting appliance. The battery lifting appliance comprises a battery lifting tool. The battery lifting tool comprises a lifting hook assembly and a lifting rope assembly, the lifting rope assembly comprises a tensile elastic piece and a lifting rope connected with the lifting hook assembly, at least one end of the tensile elastic piece is directly connected to the lifting rope, and when the battery lifting tool is used, in the projection of an upright projection plane, the lifting rope and the tensile elastic piece coincide. The length of the tensile elastic piece in a natural state is smaller than that of the lifting rope, and the limit tensile stroke of the tensile elastic piece meets the requirement that the lifting rope can be straightened, so that the tensile elastic piece is kept in a stretched state after the lifting hook assembly is inserted into the lifting hole of the battery. Before hoisting, the elastic force of the tension spring can keep the connection between the lifting hook assembly and the hoisting hole of the battery; after the lifting rope is straightened, the tension spring is not stressed in the lifting and hoisting processes; and when the lifting appliance completes one-time lifting and returns to the original position, the lifting rope can be automatically retracted under the action of the tension spring.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of battery hoisting, and particularly relates to a battery hoisting tool and a battery lifting device. BACKGROUND

[0002] The battery lifting device generally comprises a frame body for connecting a hoisting equipment, a lifting rope connected to the frame body, and a lifting hook connected to one end of the lifting rope. When the battery lifting device is used to hoist a battery, the connection between the lifting device and the battery is achieved by inserting the lifting hook into a hoisting hole horizontally extending on the side of the battery, and then the battery is lifted by using the hoisting equipment, and the lifting rope is in a taut state during the hoisting process. In order to ensure the safety during the hoisting process, the battery is generally provided with more than four hoisting point positions, and only one worker may be responsible for inserting the lifting hook into the hoisting hole on site. Since the lifting hook is subjected to the extrusion force of the battery only after the lifting rope is taut, the lifting hook is easily detached from the hoisting hole of the battery once the lifting rope shakes before hoisting, and the lifting hook needs to be reconnected.

[0003] A new energy vehicle power battery lifting device is disclosed in a Chinese utility model patent with the authorization announcement No. CN215946488U. The lifting device comprises a frame body, a lifting belt, and a lifting plate assembly. The lifting plate assembly comprises a lifting hook plate, and a limiting assembly is arranged on both sides of the lifting hook plate. The limiting assembly on one side comprises a fixed plate fixedly connected to the lifting hook plate and two third positioning pins (equivalent to positioning pins). A first positioning pin (equivalent to a limiting pin) movable in the axial direction is arranged on the fixed plate. A magnet is arranged on the side of the first positioning pin close to the lifting hook plate. The limiting assembly on the other side is the same as that on the side. When the lifting device is used to hoist a battery, the lifting device is first moved to the top of the battery, and then the two third positioning pins are inserted into the horizontal positioning holes at the four corners of the battery. Then, the first positioning pin is inserted into the vertical positioning hole of the battery, and the magnet and the lifting hook plate are attracted to make the connection of the first positioning pin more stable.

[0004] The above-mentioned connection structure has the advantage that the lifting plate assembly can be reliably connected to the battery through the combination of the first positioning pin and the third positioning pin, regardless of whether the lifting belt is taut or not. However, when only two horizontal hoisting holes are arranged on the side of the battery, the first positioning pin loses the anti-detaching effect, and the lifting plate assembly is still easily detached from the hoisting hole of the battery. On the other hand, after the hoisting is completed, the lifting plate assembly is removed, and several lifting plate assemblies still remain near the hoisting holes of the battery base. During the process of lifting the battery lifting device away from the battery, the protrusions on the lifting plate assembly are easily hooked or bumped against the battery base. SUMMARY

[0005] The present application aims to provide a battery hoisting tool to solve the technical problem that the lifting hook of the existing lifting device is easily detached from the hoisting hole of the battery before hoisting. The present application also aims to provide a battery lifting device to solve the same technical problem.

[0006] To achieve the above object, the technical scheme of the battery lifting tool provided by the present application is as follows: The battery lifting tool comprises a lifting hook assembly and a lifting rope assembly, the lifting rope assembly comprises a tensile elastic member and a lifting rope connected with the lifting hook assembly, one end of the tensile elastic member is directly connected to the lifting rope, in the projection of the orthographic projection plane, the lifting rope and the tensile elastic member have an overlapping part, the length of the tensile elastic member in the natural state is less than the length of the lifting rope, and the limit tensile stroke of the tensile elastic member satisfies the condition that the lifting rope can be straightened, so that the tensile elastic member remains in the stretched state after the lifting hook assembly is inserted into the lifting hole of the battery.

[0007] The present application belongs to an improved invention, and has the following beneficial effects: the tensile elastic member is connected to the lifting rope, and the tensile elastic member and the lifting rope have an overlapping part in the projection of the orthographic projection plane, so that the lifting hook assembly and the lifting hole of the battery can be connected through the elastic force of the tensile elastic member when the lifting hook assembly is connected before lifting; the limit tensile stroke of the tensile elastic member satisfies the condition that the lifting rope can be straightened, so that the tensile elastic member is not stressed after the lifting rope is straightened, ensuring the reliable use of the battery lifting tool and the tension spring; and when the lifting tool is moved to the initial position after completing the lifting and transportation of the battery for the next lifting operation, the lifting rope can be automatically reeled in under the action of the natural unstretched tensile elastic member, avoiding the lifting tool from being hooked or bumped with the battery base during the moving-away process.

[0008] As a further improvement, the tensile elastic member is a tension spring, and the tension spring is sleeved on the periphery of the lifting rope.

[0009] As a further improvement, the lifting hook assembly comprises a lifting hook plate, two positioning pins arranged in the horizontal direction and two fixed plates arranged in the vertical direction are fixedly connected to the lifting hook plate, a limiting pin vertically movable through the two fixed plates is arranged on the two fixed plates, the positioning pins are used for being inserted into the horizontal lifting hole of the battery pack, and the limiting pin is used for being inserted into the vertical lifting hole of the battery pack.

[0010] As a further improvement, a compression spring is sleeved on the limiting pin, a stop structure is arranged on the limiting pin, the upper end of the compression spring abuts against the fixed plate, and the lower end of the compression spring abuts against the stop structure.

[0011] To achieve the above object, the technical scheme of the battery lifting tool provided by the present application is as follows: The utility model belongs to an improved invention creation, and its beneficial effects are as follows: by connecting the stretchable elastic member to the lifting rope and making the stretchable elastic member overlap the lifting rope in the projection of the orthographic projection plane, the stretchable elastic member can keep the lifting hook assembly connected to the hoisting hole of the battery when the lifting hook assembly is connected before lifting; the limit stretch stroke of the stretchable elastic member satisfies the condition that the lifting rope can be straightened, and after the lifting rope is straightened, the stretchable elastic member is not stressed during the lifting process or the hoisting process, thereby ensuring reliable use of the battery lifting assembly and the tension spring; moreover, when the lifting assembly finishes hoisting the previous battery and the connection between the lifting hook assembly and the battery is released, the lifting rope can be automatically reeled in under the action of the naturally unstretched stretchable elastic member, thereby avoiding the lifting assembly from being hooked or bumped against the battery base during the moving-away process.

[0012]

[0013] As a further improvement, the stretchable elastic member is a tension spring, and the tension spring is sleeved on the periphery of the lifting rope.

[0014] As a further improvement, the lifting hook assembly comprises a lifting hook plate, two positioning pins arranged at intervals in the horizontal direction and two fixed plates arranged at intervals in the vertical direction are fixedly connected to the lifting hook plate, and a limiting pin that can move vertically and penetrates through the two fixed plates is arranged on the two fixed plates, the positioning pins are used for being inserted into the horizontal hoisting hole of the battery pack, and the limiting pin is used for being inserted into the vertical hoisting hole of the battery pack.

[0015] As a further improvement, a compression spring is sleeved on the limiting pin, a stop structure is arranged on the limiting pin, the upper end of the compression spring abuts against the fixed plate, and the lower end of the compression spring abuts against the stop structure.

[0016] As a further improvement, a pulley assembly is connected to the frame, the pulley assembly comprises a plurality of fixed pulleys connected in series through a connecting rope and a movable pulley located between adjacent fixed pulleys, the fixed pulleys are installed on the frame through a wheel frame, the movable pulley is hung on the connecting rope, the movable pulley is connected with a connecting component, and the connecting component is connected with the lifting rope assembly.

[0017] As a further improvement, one end of the stretchable elastic member is connected to the lifting rope, and the other end of the stretchable elastic member is connected to the connecting component. BRIEF DESCRIPTION OF DRAWINGS

[0018] ​Figure 1 Structure diagram of the battery lifting appliance in the lifting state; Figure 2 Structure diagram of the battery lifting appliance in the lifting state (hidden battery); Figure 3 Structure diagram of the hook assembly of the present application; Figure 4 Structure diagram of the hook assembly of the present application in the alignment state with the battery; Figure 5 Structure diagram of the hook assembly of the present application in the connection state with the battery; Figure 4 Local enlarged diagram of the alignment position of the hook assembly with the battery; Figure 6 Structure diagram of the hook assembly of the present application in the connection state with the battery; Figure 7 Structure diagram of the hook assembly of the present application in the connection state with the battery; Figure 6 Local enlarged diagram of the connection position of the hook assembly with the battery.

[0019] Explanation of reference numerals: 1, frame; 101, lifting ring; 102, outer frame; 103, cross beam; 104, longitudinal beam; 105, diagonal brace; 2, pulley assembly; 201, fixed pulley; 202, movable pulley; 203, connecting rope; 204, wheel carrier; 205, supporting ring; 206, connecting component; 3, lifting rope assembly; 301, lifting rope; 302, tension spring; 4, hook assembly; 401, hook plate; 402, positioning pin; 403, fixed plate; 404, limiting pin; 405, compression spring; 406, stop structure; 5, battery. DETAILED DESCRIPTION

[0020] To solve the technical problem that the hook of the existing lifting appliance is prone to falling off from the lifting hole of the battery before lifting, the basic technical concept of the present application is that a tensile elastic member is connected to the lifting rope, and in the projection of the orthographic projection plane, the tensile elastic member and the lifting rope have an overlapping part, and the length of the tensile elastic member in the natural state is less than the length of the lifting rope, so that the hook assembly is kept in the connected state with the battery by the elastic force of the tension spring before lifting, and at the same time, the limit tensile stroke of the tensile elastic member satisfies the condition that the lifting rope can be straightened, so as to prevent the tension spring from being stressed during lifting and hoisting.

[0021] The present application will be further described in detail in combination with the embodiments.

[0022] The specific embodiments of the battery lifting appliance provided by the present application are as follows: As Figure 1 and Figure 2As shown, the battery lifting appliance comprises a frame body 1, the frame body 1 is provided with a lifting ring 101 at the top, a pulley assembly 2 is connected to the frame body 1, a hook assembly 4 is connected to the pulley assembly 2 through a lifting rope assembly 3, and the hook assembly 4 is used for connecting with a battery 5. The lifting ring 101 is connected to a crane or a travelling crane, and the battery 5 can be lifted by the battery lifting appliance.

[0023] As shown in Figure 2 and Figure 3 , the lifting rope assembly 3 comprises a lifting rope 301 and a tension spring 302, both ends of the lifting rope 301 are connected with the pulley assembly 2 and the hook assembly 4 respectively, one end of the tension spring 302 is connected to the lifting rope 301 and the other end is connected to the pulley assembly 2. The pulley assembly 2 comprises a plurality of fixed pulleys 201 connected in series through a connecting rope 203 and a movable pulley 202 located between adjacent fixed pulleys 201, the fixed pulleys 201 are installed on the frame body 1 through a wheel frame 204, the movable pulley 202 is hung on the connecting rope 203, the movable pulley 202 is connected with a connecting component 206, and the connecting component 206 is connected with the lifting rope assembly 3. The hook assembly 4 comprises a hook plate 401, the hook plate 401 is provided with a connecting hole connected with the other end of the lifting rope 301, and two positioning pins 402 are further connected to the hook plate 401 below the connecting hole.

[0024] When the battery 5 is lifted, first, the lifting appliance is moved to the top of the battery 5 and is lowered to an appropriate height, then the tension spring 302 is pulled to make the positioning pins 402 of the hook assembly 4 inserted into the horizontal lifting holes on the side of the battery 5, the elastic force of the tension spring 302 makes the positioning pins 402 and the horizontal lifting holes press each other, and then a larger static friction force is generated to keep the reliable connection between the positioning pins 402 and the horizontal lifting holes and avoid unhooking. At this time, due to the pulling force of the tension spring 302, each movable pulley 202 is pulled to the same height position, and the connecting rope 203 can also be kept in the initial tension state, and then is reliably limited in the pulley grooves of the fixed pulleys 201 and the movable pulleys 202 to prevent the connecting rope 203 from being out of the groove. Subsequently, the lifting appliance is raised to a certain height, under the gravity of the battery 5, the lifting rope 301 is gradually straightened, when the lifting rope 301 is straightened, the weight of the battery 5 is borne by the lifting rope 301, and the tension spring 302 is no longer stressed; finally, the lifting appliance drives the battery 5 to complete the lifting work. In addition, when the weight of the battery 5 is unevenly distributed, the movable pulleys 202 will adaptively move positions along the connecting rope 203, and the positions are adjusted again according to the weight distribution of the battery 5, when the weight of the battery 5 is evenly distributed, the movable pulleys 202 can be kept at the stretched positions.

[0025] The pulley assembly 2 functions to automatically adjust the position of each movable pulley 202 according to the weight distribution of the battery 5 during hoisting and lifting, so as to balance the gravity of the battery 5 borne by each hook assembly 4; the main function of the hoisting rope assembly 3 is to maintain the connection state of the positioning pin 402 of the hook assembly 4 and the horizontal lifting hole of the battery 5 through the stretching force of the tension spring 302 during hoisting preparation, so as to prevent unhooking; and after completing the lifting work of the battery 5 once, the lifting appliance needs to be moved to the initial position for the next lifting operation. In order to prevent the entanglement between the hoisting ropes 301 or the interference between the hoisting ropes 301 and other components in the workshop during the movement of the lifting appliance, the hoisting ropes 301 need to be retracted, and then lowered at the required position. Compared with the prior art, the hoisting rope 301 connected with the tension spring 302 can be automatically retracted under the action of the natural tension spring 302 which is not stretched, which can greatly reduce the workload of the battery 5 lifting personnel; at the same time, the hoisting rope assembly 3 also has an auxiliary effect on the pulley assembly 2. When the hook assembly 4 and the battery 5 are connected, the stretching force of the tension spring 302 can pull the movable pulley 202, so that the connecting rope 203 connected in series on each fixed pulley 201 and movable pulley 202 is trapped in each pulley groove, ensuring the reliable use of the pulley assembly 2, preventing the connecting rope 203 from coming out of the pulley groove, causing the battery 5 to tilt during hoisting, or even the connecting rope 203 being cut off by the pulley, leading to the battery 5 falling and other serious accidents.

[0026] In addition, the advantage of connecting the tension spring 302 in this way is that when the hook assembly 4 is connected with the battery 5, the top end of the tension spring 302 remains fixed, and only the bottom end is stretched with the movement of the hook assembly 4, and the bottom end is arranged separately from the hook assembly 4, so as to avoid affecting the tension spring 302 as much as possible.

[0027] In fact, the two ends of the tension spring 302 can also be directly connected to the hoisting rope 301, or one end of the tension spring 302 is indirectly connected to the hoisting rope 301 through the hook assembly 4 and the other end is directly connected to the hoisting rope 301, as long as there is an overlapping part between the hoisting rope 301 and the tension spring 302 in the projection of the orthographic projection plane in use, and the length of the tension spring 302 in the natural state is less than the length of the hoisting rope 301, so as to ensure that the tension spring 302 can pre-tighten the hook assembly 4; the limit stretching stroke of the tension spring 302 is greater than or equal to the length of the hoisting rope 301 located between the two ends of the tension spring 302, so as to ensure that the hoisting rope 301 can be straightened, and the tension spring 302 still has a deformation allowance when the hoisting rope 301 is straightened, preventing the tension spring 302 from being stressed during hoisting and lifting.

[0028] As Figure 2As shown, the tension spring 302 is sleeved on the periphery of the hoisting rope 301. On one hand, the hoisting rope 301 between the two ends of the tension spring 302 is received in the tension spring 302, which can prevent interference or entanglement with other components; on the other hand, the stretching direction of the tension spring 302 is always consistent with the stretching direction of the hoisting rope 301, which helps to prevent unnecessary vibration during the hoisting process.

[0029] It should be noted that in other embodiments, the tension spring 302 can be replaced by other forms of tension elastic members, for example, a rubber elastic rope can be used.

[0030] As shown in Figure 1 and Figure 2 , the frame body 1 includes an outer frame 102 and longitudinal beams 104 connected in the outer frame 102 and spaced apart, adjacent longitudinal beams can be connected by diagonal braces 105, the lifting eye 101 is connected to the frame body 1 through a cross beam 103 connected to the outer frame 102 and the longitudinal beams 104, and the cross beam 103 is parallel to the length direction of the battery 5. In this way, the pulley assembly 2 can be connected to the frame body 1, and multiple lifting points can be easily arranged. The lifting eye 101 is arranged on the cross beam 103 arranged along the length direction of the battery 5, which can make the battery 5 more stable during hoisting.

[0031] As shown in Figure 1 and Figure 2 , the fixed pulley 201 is installed on the frame body 1 through a pulley bracket 204, the movable pulley 202 is hung on the connecting rope 203, the movable pulley 202 is connected with a connecting component 206, and the connecting component 206 is connected with the hoisting rope assembly 3. The corners of the frame body 1 are respectively connected with support rings 205, one connecting rope 203 is sequentially threaded through each fixed pulley 201, movable pulley 202 and support ring 205, and the two ends of the connecting rope 203 are respectively fixed on the two support rings 205 located at the same end of the frame body 1, and the connecting ropes 203 located at the two opposite sides of the frame body 1 are reversed through the two support rings 205 connected to the other end of the frame body 1. When the lifting hook assembly 4 pulls the hoisting rope assembly 3 to connect with the battery 5, the movable pulley 202 moves vertically while driving the connecting rope 203 to slide in the pulley groove between the frame body 1 and the fixed pulley 201, thereby driving the fixed pulley 201 to rotate the pulley shaft on the mounting bracket.

[0032] The fixed pulley 201 is inserted with the pulley shaft and the wheel frame 204, and is hoisted on the frame body 1, the pulley shaft does not move due to the rotation of the fixed pulley 201, and the connection of the fixed pulley 201 can be more stable. In addition, the supporting ring 205 realizes the reversing of the connecting rope 203, and the connecting rope 203 connects each fixed pulley 201 and movable pulley 202 in series. No matter which movable pulley 202 is stretched and moved, the remaining movable pulleys 202 are simultaneously moved under the stretching action, and finally after all the hook assemblies 4 are connected with the battery 5, the positions of the movable pulleys 202 are adjusted in place, and the stress of each hook assembly 4 is balanced; after lifting, under the action of the gravity of the battery 5, the positions of the movable pulleys 202 are adjusted again with the weight of the battery 5, and the stress of each hook assembly 4 is balanced again.

[0033] In other embodiments, the connecting rope 203 can also be a ring rope, and the supporting ring 205 can also be a fixed pulley connected to the frame body 1, and the rotation axis of the fixed pulley extends vertically, thereby changing the direction of the connecting rope 203.

[0034] As shown in Figure 3 When the side of the battery 5 is provided with a vertical hoisting hole, two fixed plates 403 are fixedly connected on the hook plate 401 and are arranged in a vertical direction, the two fixed plates 403 are provided with a limiting pin 404 which can vertically move and penetrates the two fixed plates 403, the limiting pin 404 is provided with a stop structure 406 and is externally sleeved with a compression spring 405, the upper end of the compression spring 405 abuts against the fixed plate 403, and the lower end abuts against the stop structure 406. The limiting pin 404 and the positioning pin 402 are inserted into the hoisting hole, and the limiting pin 404 and the positioning pin 402 are combined to realize the reliable connection between the hook assembly 4 and the battery 5, and under the stretching and pre-tightening action of the tension spring 302, the limiting pin 404 can further prevent the connection between the hook assembly 4 and the battery 5 from loosening. Specifically, the stop structure 406 can be fixedly connected or detachably connected with the limiting pin 404.

[0035] The two fixed plates 403 not only realize the installation of the limiting pin 404, but also guide the pulling and inserting movement of the limiting pin 404, thereby improving the axial movement precision of the limiting pin 404, the compression spring 405 can provide the limiting pin 404 with a reset elastic force in the inserting process, the stop structure 406 realizes the connection between the limiting pin 404 and the compression spring 405, and the limiting pin 404 cannot be pulled out at will, which is helpful to prevent loss during long-term use.

[0036] As shown in Figure 4-Figure 7As shown, in the hoisting preparation, the limiting pin 404 is first stretched upward, then the positioning pin 402 is aligned with the horizontal lifting hole located on the side of the battery 5, and then the positioning pin 402 is inserted into the horizontal lifting hole. At this time, under the elastic force of the tension spring 302, the positioning pin 402 has been reliably connected in the lifting hole. Since the limiting pin 404 is inserted into the two fixed plates 403, it is equivalent to forming an axial guide for the limiting pin 404 between the two fixed plates 403. Under the contraction force of the compression spring 405, the stretched limiting pin 404 is directly released, and the connection of the limiting pin 404 with the vertical lifting hole of the battery 5 is realized.

[0037] Compared with the prior art, first, in the prior art, when aligning and connecting the third positioning pin, the first positioning pin needs to be stretched, and when inserting the first positioning pin, the hook plate needs to be manually held to prevent the third positioning pin from being pulled out of the horizontal lifting hole of the battery. On the basis of preventing unhooking, the operability of the hook assembly 4 and the battery 5 connection is improved. Second, in the prior art, the first fixed pin is only inserted into one fixed plate, and the contact area between the fixed plate and the first positioning pin is small. When inserting the first fixed pin into the vertical lifting hole of the battery, the part of the first positioning pin below the fixed plate may be inclined, which makes it difficult to insert. The present embodiment further improves the operability of the hook assembly 4 and the battery 5 connection. Third, in the prior art, the first positioning pin is connected to the hook plate by the magnetic attraction of the magnet, which can only strengthen the connection between the first positioning pin and the vertical lifting hole, but cannot provide the first positioning pin with the required auxiliary action in the insertion direction when the first positioning pin is inserted into the vertical lifting hole. The worker needs to overcome the suction force of the magnet and the hook plate to forcibly insert the first positioning pin into the vertical lifting hole. The present embodiment improves the operability of the hook assembly 4 and the battery 5 connection. Finally, the first positioning pin and the hook plate are detachably connected, which is easy to lose during long-term use of the lifting device. The use reliability of the hook assembly 4 of the present embodiment is higher.

[0038] In other embodiments, it is also not excluded that the limiting member is directly connected to the two fixed plates 403 through the stop structure 406, or the limiting pin 404 is connected to the fixed plate 403 through the tension spring 302, which is not detachable. At this time, the two ends of the tension spring 302 are connected to the top of the limiting pin 404 and the fixed plate 403 located above, respectively.

[0039] The specific embodiments of the battery hoisting tool provided by the present application are as follows: The embodiments of the battery hoisting tool are the same as the battery lifting device described in any of the above embodiments, which will not be described in detail here.

[0040] Finally, it should be noted that the above description is only the preferred embodiments of the present application, and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that the technical solutions described in the foregoing embodiments can be modified without creative labor, or some technical features thereof can be replaced equivalently. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery lifting tool, comprising a hook assembly and a lifting rope assembly, characterized in that: The hanging rope assembly includes a tensile elastic member and a hanging rope connected to the hook assembly. At least one end of the tensile elastic member is directly connected to the hanging rope. When in use, in the projection of the upright projection plane, there is an overlapping part between the hanging rope and the tensile elastic member. The length of the tensile elastic member in the natural state is less than the length of the hanging rope, and the maximum tensile stroke of the tensile elastic member is sufficient to enable the hanging rope to be straightened, so that after the hook assembly is inserted into the hanging hole of the battery, the tensile elastic member remains in a stretched state.

2. The battery lifting tool according to claim 1, characterized in that: The tensile elastic member is a tension spring, and the tension spring is sleeved on the periphery of the suspension rope.

3. The battery lifting tool according to claim 1 or 2, characterized in that: The hook assembly includes a hook plate, which is fixed with two positioning pins arranged at intervals along the horizontal direction and two fixing plates arranged at intervals along the vertical direction. The two fixing plates are provided with limit pins that pass through the two fixing plates and can move vertically. The positioning pin is used to insert into the horizontal lifting hole of the battery pack, and the limit pin is used to insert into the vertical lifting hole of the battery pack.

4. The battery lifting tool according to claim 3, characterized in that: A compression spring is provided on the outer sleeve of the limit pin, and a stopping structure is provided on the limit pin. The upper end of the compression spring abuts against the fixed plate, and the lower end abuts against the stopping structure.

5. A battery hanger, comprising a frame, characterized in that: A plurality of battery lifting fixtures are connected to the frame, and the battery lifting fixtures include a hook assembly and a rope assembly. The rope assembly includes a tensile elastic member and a rope connected to the hook assembly. At least one end of the tensile elastic member is directly connected to the rope. When in use, in the projection of the upright projection plane, there is an overlapping part between the rope and the tensile elastic member. The length of the tensile elastic member in the natural state is less than the length of the rope, and the maximum tensile stroke of the tensile elastic member is sufficient to enable the rope to be straightened, so that after the hook assembly is inserted into the lifting hole of the battery, the tensile elastic member remains in a stretched state.

6. The battery hanger according to claim 5, characterized in that: The tensile elastic member is a tension spring, and the tension spring is sleeved on the periphery of the suspension rope.

7. The battery hanger according to claim 5 or 6, characterized in that: The hook assembly includes a hook plate, which is fixed with two positioning pins arranged at intervals along the horizontal direction and two fixing plates arranged at intervals along the vertical direction. The two fixing plates are provided with limit pins that pass through the two fixing plates and can move vertically. The positioning pin is used to insert into the horizontal lifting hole of the battery pack, and the limit pin is used to insert into the vertical lifting hole of the battery pack.

8. The battery hanger according to claim 7, characterized in that: A compression spring is provided on the outer sleeve of the limit pin, and a stopping structure is provided on the limit pin. The upper end of the compression spring abuts against the fixed plate, and the lower end abuts against the stopping structure.

9. The battery hanger according to claim 5 or 6, characterized in that: A pulley assembly is connected to the frame, which includes a plurality of fixed pulleys connected in series via a connecting rope and a movable pulley located between adjacent fixed pulleys. The fixed pulleys are mounted on the frame through a wheel frame, and the movable pulleys are hung on the connecting rope. The movable pulleys are connected to a connecting component, which is connected to the suspension rope assembly.

10. The battery hanger according to claim 9, characterized in that: One end of the tensile elastic member is connected to the sling, and the other end is connected to the connecting component.

Images