Hoisting mechanism and battery replacing system

Abstract

The utility model discloses a hoisting mechanism and a battery replacing system, and relates to the technical field of hoisting mechanisms, the hoisting mechanism comprises a rack, a driving mechanism, a first pulley, an anti-loosening mechanism and a third pulley; the driving mechanism is arranged on the rack; the first pulley is in transmission connection with the driving mechanism, and is driven by the driving mechanism to be far away from or close to the driving mechanism; the anti-loosening mechanism comprises a mounting frame movably arranged on the rack, a second pulley arranged on the mounting frame and an elastic piece arranged between the rack and the mounting frame; the third pulley is arranged on the rack; one end of the lifting rope is connected with the rack, and the other end of the lifting rope is sequentially wound around the first pulley, the second pulley and the third pulley to be used for lifting heavy objects. According to the technical scheme provided by the utility model, the problem of groove jumping or dislocation caused by looseness after a heavy object is hoisted by the steel wire rope is solved, and the hoisting mechanism with the anti-loosening device is designed, so that the steel wire rope is still kept in a stable tensioning state after the heavy object is separated, and looseness is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to hoisting technical field, especially in a hoisting mechanism and battery replacement system. BACKGROUND

[0002] In the related hoisting mechanism, after the lifting rope hoists the heavy object, the limited inductor or feedback device usually continues to fall a certain stroke after the heavy object falls, which leads to the problem of slackening of the lifting rope after the heavy object is separated from the lifting rope, and causes the steel wire rope to easily jump or misplace. UTILITY MODEL CONTENTS

[0003] The utility model discloses a hoisting mechanism and battery replacement system, which aims to solve the jumping or misplacement phenomenon caused by the overlong length of the lifting rope after the heavy object is lowered, and ensure that the lifting rope still maintains a stable tension state after the heavy object is separated, thereby avoiding slackening.

[0004] To achieve the above-mentioned purpose, the hoisting mechanism provided by the utility model comprises:

[0005] A rack;

[0006] A driving mechanism arranged in the rack;

[0007] A first pulley in driving connection with the driving mechanism, which moves away from or approaches the driving mechanism under the driving of the driving mechanism;

[0008] A slack prevention mechanism comprising a mounting rack movably arranged in the rack, a second pulley arranged in the mounting rack and an elastic member arranged between the rack and the mounting rack;

[0009] A third pulley arranged in the rack; and

[0010] A lifting rope, one end of which is connected with the rack, and the other end of which is sequentially arranged around the first pulley, the second pulley and the third pulley for taking and placing heavy objects; when the acting force of the heavy object on the lifting rope is less than the acting force of the elastic member on the mounting rack, the mounting rack moves away from the rack under the elastic force of the elastic member, so that the lifting rope is kept in tension.

[0011] In an embodiment, the mounting rack is connected with the rack through a sliding mechanism and can move relative to the rack.

[0012] In an embodiment, the sliding mechanism comprises a sliding block and a guide rail in sliding cooperation, the sliding block is arranged in the mounting rack, and the guide rail is arranged on the rack.

[0013] In one embodiment, the frame includes a base and two connecting frames spaced apart in the width direction of the base, and the two connecting frames and the mounting frame are each connected by an elastic member.

[0014] In one embodiment, the elastic element is configured as a compression spring, and a limiting element is provided on the frame, through which the compression spring passes, and the limiting element is used to restrict the mounting bracket from approaching the frame.

[0015] In one embodiment, the limiting member is configured as a limiting sleeve, the frame is further provided with a guide rod, the guide rod passes through the limiting sleeve, the mounting frame is provided with a guide hole, and the guide rod slides through the guide hole.

[0016] In one embodiment, the mounting frame includes two mounting slots, the second pulley includes two pulleys, one of the mounting slots contains one second pulley, the third pulley includes four pulleys, the four third pulleys are arranged in a rectangular shape on the frame, and the lifting rope includes four ropes, which are respectively wound around the first pulley, the second pulley and the third pulley in sequence.

[0017] In one embodiment, the first pulley is provided with four rope grooves for the hoisting rope to be wound.

[0018] In one embodiment, each of the second pulleys is provided with two rope grooves for the suspension rope to be wound.

[0019] In one embodiment, the drive mechanism is configured as a hydraulic device, the first pulley is slidably connected to the frame via a movable frame, and the movable rod of the hydraulic device is connected to the movable frame.

[0020] In one embodiment, the first pulley, the second pulley, and the third pulley are all provided with protective covers to prevent the suspension rope from detaching.

[0021] This utility model also proposes a battery swapping system, including the hoisting mechanism described above.

[0022] In this invention, the lifting rope is wound around a first pulley, a second pulley, and a third pulley. The drive mechanism acts as a power source, driving the first pulley to move away from or towards the drive mechanism. When the lifting end of the rope is connected to the load, the first pulley moves away from the drive mechanism, and the lifting end moves towards the frame, causing the load to rise. Conversely, when the first pulley moves towards the drive mechanism, the lifting end moves away from the frame, causing the load to fall. When the load is taut on the rope, the mounting frame moves towards the frame under the influence of the rope, pressing against the elastic element of the frame. When the load is detached from the rope, the mounting frame moves away from the frame under the push of the elastic element, ensuring that the rope remains taut during the reset process. The anti-slackening mechanism effectively prevents the load from falling due to accidental slackening of the wire rope during lifting, improving the safety of the lifting operation. Furthermore, by maintaining the tension of the rope, it reduces wear and damage caused by slackening, thereby extending the service life of the rope. A stable rope position also reduces time wasted adjusting the rope's position, improving overall lifting efficiency. Compared to drum hoisting systems that require regular maintenance of the drum and rope winding, this pulley system is simpler and has lower maintenance costs. The anti-loosening mechanism uses a movable pulley tensioning method. The first and second pulleys act as movable pulleys, while the third pulley acts as a fixed pulley to change the direction of the rope. That is, if the first pulley's stroke is 1mm, the relative rope stretch is 2mm, resulting in double the anti-loosening effect. Furthermore, the anti-loosening mechanism only requires mechanical hard limiters, eliminating the need for sensors, thus reducing costs, simplifying the procedure, and lowering the overall failure rate. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 A schematic diagram of a structure of an embodiment of the hoisting mechanism provided by this utility model;

[0025] Figure 2 for Figure 1 A magnified view of a section where the suspension rope is hidden;

[0026] Figure 3 A simplified schematic diagram of a hoisting mechanism with a hoisting rope wound around it.

[0027] Figure 4 A schematic diagram of an embodiment of the guide rod and limiting member provided on the connecting frame.

[0028] Explanation of icon numbers:

[0029] 100. Frame; 101. Base; 102. Connecting frame; 103. Limiting component; 104. Guide rod;

[0030] 110. Sliding mechanism; 111. Slider; 112. Guide rail;

[0031] 200. Drive mechanism;

[0032] 300. First pulley;

[0033] 400. Anti-loosening mechanism; 410. Mounting bracket; 420. Second pulley; 430. Elastic element;

[0034] 500. The third pulley;

[0035] 600. Protective shield.

[0036] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0038] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0039] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0040] In relevant hoisting mechanisms, after the hoisting rope lifts a heavy object, the limited sensing or feedback will usually continue to travel for a certain period of time after the object falls. After the object is removed from the hoisting rope, the steel wire will become loose, which will make the hoisting rope prone to jumping out of the groove or misalignment.

[0041] This utility model proposes a hoisting mechanism to solve the problem of hoisting ropes slipping or misaligning due to slack after hoisting heavy objects. By designing a hoisting mechanism with an anti-loosening device, it ensures that the hoisting ropes maintain a stable tension after the heavy objects are released, thus avoiding slack.

[0042] This lifting mechanism can be used in scenarios that require frequent lifting and have high safety requirements, such as construction sites, factory production lines, warehousing and logistics, and battery swapping processes.

[0043] Please see Figures 1 to 4 The hoisting mechanism includes a frame 100, a drive mechanism 200, a first pulley 300, an anti-loosening mechanism 400, and a third pulley 500. The drive mechanism 200 is mounted on the frame 100. The first pulley 300 is connected to the drive mechanism 200 in a transmission manner. Under the drive of the drive mechanism 200, the first pulley 300 moves away from or closer to the drive mechanism 200. The anti-loosening mechanism 400 includes a mounting bracket 410 movably mounted on the frame 100, a second pulley 420 mounted on the mounting bracket 410, and an elastic element 430 between the frame 100 and the mounting bracket 410. The third pulley 500 is mounted on the frame 100. One end of the hoisting rope is connected to the frame 100, and the other end is sequentially wound around the first pulley 300, the second pulley 420, and the third pulley 500 for hoisting heavy objects.

[0044] The frame 100 is the basic support structure of the hoisting mechanism. The frame 100 can be a fixed frame 100, a mobile frame 100, a telescopic frame 100, etc. The frame 100 can also be used as an intermediate connecting frame and installed on the fixed frame 100 or the mobile frame 100 through a moving mechanism to achieve different purposes or needs.

[0045] The drive mechanism 200 is the power source for the hoisting mechanism. The drive mechanism 200 can be electrically driven, such as using an electric motor, reducer and transmission device to form a drive system; hydraulically driven, such as using a hydraulic pump, hydraulic cylinder and hydraulic valve to form a hydraulic system; pneumatically driven, such as using an air compressor, cylinder and pneumatic valve to form a pneumatic system; or a hybrid drive, such as using a hybrid electric and hydraulic drive, or a hybrid electric and pneumatic drive.

[0046] The material and type of lifting rope can be selected according to actual needs. For example, steel wire rope can be used when lifting heavy objects such as batteries. The lifting rope can be pre-installed on the lifting mechanism during production or assembled after sale.

[0047] In this invention, the lifting rope is threaded through a first pulley 300, a second pulley 420, and a third pulley 500. The drive mechanism 200 acts as a power source, driving the first pulley 300 to move away from or towards the drive mechanism 200. When the lifting end of the rope is connected to the load, the first pulley 300 moves away from the drive mechanism 200, and the lifting end moves towards the frame 100, causing the load to rise. Conversely, when the first pulley 300 moves towards the drive mechanism 200, the lifting end moves away from the frame 100, causing the load to descend. When the load is taut on the rope, the mounting bracket 410 moves towards the frame 100 under the influence of the rope, and... The elastic element 430 is compressed; after the load is released from the lifting rope, the mounting frame 410, pushed by the elastic element 430, moves away from the frame 100, ensuring that the lifting rope remains taut during the reset process. The anti-slackening mechanism 400 effectively prevents the load from falling due to accidental slackening of the wire rope during lifting, improving the safety of the lifting operation. Furthermore, by maintaining the tension of the wire rope, it reduces wear and damage caused by slackening, thereby extending the service life of the wire rope. A stable wire rope condition also reduces the time wasted on adjusting the wire rope position, improving overall lifting efficiency. Compared to drum-type lifting, which requires regular maintenance of the drum and the winding state of the wire rope, the pulley system in this solution is relatively simple and has lower maintenance costs. The anti-loosening mechanism 400 employs a movable pulley end tensioning method. The first pulley 300 and the second pulley 420 act as movable pulleys, while the third pulley 500 serves as a fixed pulley to change the direction of the lifting rope. That is, if the stroke of the first pulley 300 is 1mm, the relative rope slippage is 2mm, thus providing double the anti-loosening effect. Furthermore, the anti-loosening mechanism 400 only requires mechanical hard limiting, eliminating the need for sensors, reducing costs, simplifying the procedure, and lowering the overall failure rate.

[0048] Taking battery swapping as an example, the specific process of using the above-mentioned hoisting mechanism to hoist the battery pack is as follows:

[0049] Preparation phase:

[0050] One end of the hoisting rope is securely connected to the frame 100, and the other end passes through the first pulley 300, the second pulley 420 and the third pulley 500 in sequence to form a complete hoisting path.

[0051] Ensure that the anti-loosening mechanism 400 is in an effective working state, that is, the mounting bracket 410 is connected to the frame 100 through the elastic element 430 (such as a spring or elastic element), so that the lifting rope can maintain a certain tension when no heavy object is being lifted, and prevent it from loosening.

[0052] Lifting stage:

[0053] Connect the end of the hoisting rope to the safe hoisting point of the battery pack.

[0054] The drive mechanism 200 is activated, driving the first pulley 300 (which may be a movable pulley or a pulley with a drive device) away from the drive mechanism 200. The suspension rope moves between the first pulley 300, the second pulley 420, and the third pulley 500, thereby suspending the battery pack. During this process, the anti-loosening mechanism 400 and the elastic element 430 work together to ensure that the suspension rope maintains proper tension.

[0055] Movement phase:

[0056] As the battery pack is lifted and moved, the tension of the suspension rope changes. At this time, the elastic element 430 between the mounting bracket 410 and the frame 100 will elastically deform according to the tension of the suspension rope to maintain the tension of the suspension rope.

[0057] Release phase:

[0058] Once the battery pack reaches the designated position, the drive mechanism 200 drives the first pulley 300 to approach the drive mechanism 200, so that the battery pack descends smoothly and is placed in the designated position.

[0059] Before disconnecting the sling from the battery pack, the elastic element 430 begins to function, gradually moving the mounting bracket 410 away from the frame 100 to maintain the tension of the sling after the load is released. This step is crucial because it prevents the sling from slackening due to a sudden loss of tension after the load is released, thus avoiding situations such as slippage or misalignment.

[0060] Reference Figure 1 and Figure 3When the force exerted by the weight on the suspension rope is less than the force exerted by the elastic element on the mounting frame, that is, during the process of the force exerted by the weight on the suspension rope gradually decreasing to disappearing, and during the continuous descent of the suspension rope, the weight is gradually supported; at this time, the mounting frame 410 moves away from the frame 100 under the elastic force of the elastic element 430, thus keeping the suspension rope taut. This ensures that the suspension rope remains taut during the reset process, reducing the occurrence of jumping or misalignment caused by the suspension rope being too loose.

[0061] In one embodiment, the maximum travel length of the suspension rope on the first pulley 300 is 60mm, meaning the maximum anti-slackening travel of the suspension rope can reach 120mm, greatly reducing the probability of rope slackening. In other embodiments, the maximum travel length of the suspension rope can be designed according to actual needs.

[0062] In order to enable the mounting bracket 410 to move smoothly with the rack 100, the mounting bracket 410 is connected to the rack 100 through the sliding mechanism 110, and can move relative to the rack 100.

[0063] In one embodiment, the sliding mechanism 110 includes a slidingly engaged slider 111 and a guide rail 112. The slider 111 is disposed on the mounting frame 410, and the guide rail 112 is disposed on the frame 100. The sliding mechanism 110 allows the mounting frame 410 to be finely adjusted on the frame 100 to ensure that the lifting rope always maintains proper tension during the lifting process.

[0064] In one embodiment, a bearing seat is provided on the frame 100, and the mounting frame 410 is connected to the bearing seat through a bearing to achieve rolling; or, a chain or pulley is provided on the frame 100, and the mounting frame 410 is connected to the chain or pulley through a chain or belt to achieve transmission; or, a hydraulic cylinder or pneumatic cylinder is provided on the frame 100, and the mounting frame 410 is connected to the hydraulic cylinder or pneumatic cylinder through a piston rod to achieve movement.

[0065] Reference Figure 1 and Figure 2 Specifically, the frame 100 includes a base and two connecting frames spaced apart along the width of the base. Both connecting frames and the mounting frame 410 are connected by elastic elements 430. The base, as the foundation of the entire frame 100, provides stable support for the connecting frames and mounting frame 410. The elastic element 430 provides a certain preload to the mounting frame 410, ensuring it remains under constant tension. Since both the connecting frames and mounting frame 410 are connected to the base via the elastic element 430, this design simplifies and facilitates the maintenance of the lifting mechanism, reducing maintenance costs.

[0066] Furthermore, the elastic element 430 is configured as a compression spring, and a limiting element 103 is provided on the frame 100. The limiting element 103, through which the compression spring passes, is used to restrict the mounting frame 410 from approaching the frame 100. The compression spring, as the elastic element 430, provides a stable preload to the mounting frame 410. This preload helps maintain the tension of the lifting rope, preventing slippage or misalignment during lifting due to rope slack. After the lifting operation is completed, the spring force of the compression spring allows the mounting frame 410 to automatically return to its initial position. By limiting the range of movement of the mounting frame 410 and providing a stable preload, wear and fatigue of the lifting mechanism during operation can be reduced. This reduction in wear and fatigue helps extend the service life of the equipment and lower maintenance costs.

[0067] Combination Figure 4 Specifically, the limiting component 103 is configured as a limiting sleeve, and the frame 100 is also provided with a guide rod 104, which passes through the limiting sleeve and movably passes through the mounting bracket 410. Through the combined action of the guide rod 104 and the limiting sleeve, the precise movement of the mounting bracket 410 on the frame 100 is ensured. The design of the guide rod 104 and the limiting sleeve is relatively simple, making them easy to manufacture and install.

[0068] Furthermore, to facilitate the hoisting of the battery pack, the mounting frame 410 includes two mounting slots, two second pulleys 420 (one in each mounting slot), and four third pulleys 500 arranged in a rectangular pattern on the frame 100. Four lifting ropes are also included, threaded through the first pulley 300, second pulley 420, and third pulleys 500 respectively. The rectangular arrangement of the four third pulleys 500 on the frame 100, along with the four lifting ropes, more effectively distributes the weight and tension of the load, ensuring stability during hoisting.

[0069] Specifically, the first pulley 300 has four rope grooves for installing the lifting ropes; each second pulley 420 has two rope grooves for installing the lifting ropes. The first pulley 300 has four rope grooves, which can accommodate four lifting ropes at the same time; and each lifting rope has its own independent rope groove, avoiding friction and interference between the lifting ropes.

[0070] Reference Figure 1 and Figure 2 Specifically, the drive mechanism 200 is configured as a hydraulic device, the first pulley 300 is slidably connected to the frame 100 through the movable frame, and the movable rod of the hydraulic device is connected to the movable frame; the driving force provided by the hydraulic device is strong and stable, which can ensure that the hoisting mechanism maintains smooth operation during hoisting and reduce the possibility of swaying and vibration.

[0071] Furthermore, protective covers 600 are provided on the first pulley 300, the second pulley 420, and the third pulley 500 to prevent the lifting rope from slipping out. The main function of the protective covers 600 is to prevent the lifting rope from slipping out of the pulley. Through this physical barrier, the protective covers 600 can prevent the lifting rope from accidentally slipping out of the pulley groove during the lifting process, thereby ensuring the safety and stability of the lifting operation.

[0072] This utility model also proposes a battery swapping system, which includes a hoisting mechanism and a battery swapping station. The specific structure of the hoisting mechanism is as described in the above embodiments. Since this battery swapping system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0073] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A hoisting mechanism, characterized by, The utility model relates to a lifting mechanism, comprising: a frame; a driving mechanism arranged on the frame; a first pulley in driving connection with the driving mechanism, which moves away from or approaches the driving mechanism under the driving of the driving mechanism; an anti-loosening mechanism comprising a mounting frame movably arranged on the frame, a second pulley arranged on the mounting frame, and an elastic member arranged between the frame and the mounting frame; a third pulley arranged on the frame; and a lifting rope, one end of which is connected with the frame, and the other end of which is sequentially arranged around the first pulley, the second pulley, and the third pulley for lifting or lowering a heavy object; wherein, when the force acting on the lifting rope by the heavy object is less than the force acting on the mounting frame by the elastic member, the mounting frame moves away from the frame under the elastic force of the elastic member, so that the lifting rope is kept in tension.

2. The hoisting mechanism of claim 1, wherein The mounting frame is connected with the frame by a sliding mechanism, and can move relative to the frame.

3. The hoisting mechanism of claim 2, wherein, The sliding mechanism comprises a sliding block and a guide rail in sliding cooperation, the sliding block is arranged on the mounting frame, and the guide rail is arranged on the frame.

4. The hoisting mechanism of claim 1, wherein The frame comprises a base and two connecting frames arranged in the width direction of the base, and each of the two connecting frames and the mounting frame is connected by an elastic member.

5. The hoisting mechanism of claim 1, wherein The elastic member is configured as a compression spring, the frame is provided with a limiting member, the limiting member penetrates the compression spring, and the limiting member is used to limit the mounting frame from approaching the frame.

6. The hoisting mechanism of claim 5, wherein The limiting member is configured as a limiting sleeve, the frame is further provided with a guide rod, the guide rod penetrates the limiting sleeve, the mounting frame is provided with a guide hole, and the guide rod slides through the guide hole.

7. The hoisting mechanism of claim 1, wherein The mounting frame comprises two mounting grooves, the second pulley comprises two, one of the second pulleys is arranged in one of the mounting grooves, the third pulley comprises four, the four third pulleys are arranged in a rectangular shape on the frame, and the lifting rope comprises four, the four lifting ropes are sequentially arranged around the first pulley, the second pulley, and the third pulley.

8. The hoisting mechanism of claim 7, wherein, The first pulley is provided with four rope grooves for the lifting rope to be arranged around; and / or each second pulley is provided with two rope grooves for the lifting rope to be arranged around.

9. The hoisting mechanism of claim 1, wherein The driving mechanism is configured as a hydraulic device, the first pulley is in sliding connection with the frame through a moving frame, a movable rod of the hydraulic device is connected with the moving frame; and / or each of the first pulley, the second pulley, and the third pulley is provided with a protective cover for limiting the lifting rope from being separated.

10. A battery replacement system, characterized by, The utility model relates to a lifting mechanism comprising any one of claims 1 to 9.

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