Steel wire rope anti-loosening system and battery replacing mechanism thereof

Abstract

The utility model relates to a steel wire rope anti-loosening system and a battery replacing mechanism thereof, and the steel wire rope anti-loosening system comprises a steel wire rope tightness state monitoring device and a lifting appliance in-place monitoring device, the steel wire rope tightness state monitoring devices are installed at all the positions in the four steel wire rope hoisting systems. The steel wire rope tightness state monitoring device is mounted at a fixed pulley or a movable pulley of the steel wire rope hoisting system; the lifting appliance in-place monitoring device is mounted on the lifting appliance; a monitoring sensor for monitoring whether the steel wire rope is in a tight state or a loose state is arranged in the steel wire rope tightness state monitoring device; and a downward monitoring sensor for monitoring whether a battery pack is arranged below the lifting appliance is arranged in the lifting appliance in-place monitoring device. And the steel wire rope anti-loosening system is arranged in the battery replacing mechanism. According to the monitoring sensors of the four groups of steel wire rope tightness state monitoring devices and the monitoring sensor of the lifting appliance in-place monitoring device, the action of the winding drum device is intervened after judgment, so that the steel wire rope is prevented from being loosened and disordered.

Description

Technical Field

[0001] The utility model relates to a system applied to an electric truck battery replacement mechanism for preventing a steel wire rope used for hoisting from loosening, and a battery replacement mechanism using the steel wire rope loosening prevention system, belonging to the technical field of new energy vehicles. Background Art

[0002] Electric trucks need to be kept in use for a long time, so they generally use battery replacement to keep the power sufficient. China Patent Publication No. CN211764962U discloses a truck structure with battery replacement function, in which the detachable battery box is fixed at the rear of the truck cab and the front of the cargo platform; most electric trucks currently use a similar layout design.

[0003] In response to the battery replacement needs of this type of electric trucks, there are usually special electric truck battery replacement stations, such as the electric heavy truck fast battery replacement station with Chinese patent publication number CN219214775U and a fast transfer battery replacement station with Chinese patent publication number CN218431196U. The battery replacement station is equipped with a movable battery replacement mechanism, the upper part of which is a horizontal moving device, which is equipped with a lifting drive device, and the lower part of the battery replacement mechanism is a battery replacement hoist, which is generally connected to the lifting drive device in the horizontal moving device by a steel wire rope, such as Figure 1 , Figure 2 As shown; it mainly includes a drum device 16, a fixed pulley 17, a movable pulley 19, and a wire rope 10. According to the hoisting stability requirement, the drum device 16 generally outputs 4 groups of wire ropes 10 that can be raised and lowered synchronously, and then passes through the fixed pulley 17 downward from the four corners of the mobile platform 15, and then passes around the movable pulley 19 located at the four corners of the sling 18, and then is fixed upward to the mobile platform 15. The drum device 16 drives the 4 groups of wire ropes 10 to synchronously retract or release the ropes, and synchronously acts on the four corners of the sling 18 through the fixed pulley 17 and the movable pulley 19, driving the sling 18 to rise or fall.

[0004] However, in actual use, when the sling 18 is descending, one corner or multiple places below the sling 18 are stuck, and the drum device 16 is still releasing the rope outward, it is very easy to cause the wire rope to become tangled. For a flexible wire rope drive system, rope tangling is a very fatal problem. Once it occurs, the machine needs to be shut down, and then the wire rope needs to be rewound and repaired. If the wire rope is bent during the tangling process, in order to ensure the safety of subsequent use, the wire rope may even need to be replaced, resulting in waste of wire rope.

[0005] Therefore, it is necessary to monitor the state of the wire rope during the descent of the sling 18 and the state of the sling 18. When an abnormality occurs, the drum device 16 needs to be stopped in time to avoid releasing too much wire rope and causing rope disorder. Utility Model Content

[0006] The purpose of the utility model is to provide a wire rope anti-loosening system and a power exchange mechanism thereof, mainly providing a monitoring device for the wire rope system to monitor the status of the wire rope in real time; at the same time, providing a monitoring device for the hoisting device to monitor the descent of the hoist in real time; combining the two monitoring methods, the descending operation status of the power exchange mechanism is judged to ensure that during the descent of the hoist, the drum device will not over-release the wire rope, causing the accidental occurrence of rope tangling.

[0007] In order to achieve the above-mentioned utility model object, the first aspect of the utility model provides a wire rope loosening prevention system, including a wire rope looseness state monitoring device and a sling in place monitoring device;

[0008] The wire rope tension monitoring device is installed at each location in the 4 sets of wire rope hoisting systems;

[0009] The wire rope tension status monitoring device is installed at the fixed pulley or movable pulley of the wire rope hoisting system;

[0010] The spreader in place monitoring device is installed on the spreader;

[0011] The wire rope tension monitoring device is provided with a monitoring sensor for monitoring whether the wire rope is in a tight state or a loose state;

[0012] The spreader in place monitoring device is provided with a downward monitoring sensor for monitoring whether there is a battery pack under the spreader.

[0013] As a further improvement of the utility model, the wire rope tension status monitoring device is installed at the fixed pulley on the side of the mobile platform;

[0014] A mounting bracket is provided, a guide hole is provided on the mounting bracket, and a retractable guide rod is provided in the guide hole;

[0015] A wheel frame is installed at the end of the guide rod, and a guide wheel is arranged on the wheel frame, and the guide wheel is against the wire rope;

[0016] A return spring is sleeved on the guide rod and is located between the wheel frame and the guide hole;

[0017] The return spring is in a compressed state, and the wheel carrier is pushed out by the return spring;

[0018] A monitoring sensor is provided to monitor the position of the guide rod or the wheel frame.

[0019] Furthermore, a monitoring piece is fixed to the tail of the guide rod, and the monitoring piece moves synchronously with the guide rod;

[0020] The monitoring sensor matches the monitoring sheet.

[0021] As a further improvement of the utility model, the wire rope tension status monitoring device is installed at the fixed pulley on the side of the mobile platform;

[0022] The monitoring sensor is placed on the path of the wire rope through a bracket.

[0023] As a further improvement of the utility model, the wire rope tension status monitoring device is installed at the movable pulley on the side of the sling;

[0024] A mounting bracket is provided on the sling or on the base of the movable pulley;

[0025] A swing rod is installed on the mounting bracket through a hinge, and a reset torsion spring is provided between the mounting bracket and the swing rod;

[0026] A guide wheel is provided at the top of the swing rod, and the guide wheel is located on the inner side of the wire rope;

[0027] The return torsion spring is in a compressed state, and the return torsion spring swings the pendulum rod and the guide wheel outward, and the guide wheel always rests on the wire rope;

[0028] A monitoring bracket is provided and a monitoring sensor is installed;

[0029] The monitoring sensor monitors the position of the pendulum.

[0030] Furthermore, a long strip-shaped adjustment slot is provided on the monitoring bracket, and the monitoring sensor is installed in the adjustment slot with an adjustable position.

[0031] As a further improvement of the utility model, the wire rope tension status monitoring device is installed at the movable pulley on the side of the sling;

[0032] The monitoring sensor is installed on the hanger or the base of the movable pulley through the mounting bracket;

[0033] The movable pulley is provided with a wheel groove, and the wire rope is embedded in the wheel groove;

[0034] The monitoring sensor is a photoelectric sensor located on both sides of the movable pulley;

[0035] The monitoring light path of the opposing photoelectric sensor is located just below the bottom of the wheel groove;

[0036] The monitoring light path of the opposing photoelectric sensor is lower than the bottom of the wire rope wound on the wheel groove.

[0037] As a further improvement of the utility model, downward monitoring sensors are provided on both sides or four corners of the sling.

[0038] The wire rope anti-loosening system of the utility model is installed in the power exchange mechanism, and a set of wire rope tightness status monitoring device is installed in each of the four groups of wire rope lifting systems; a lifting equipment in place monitoring device is provided on the lifting equipment, that is, downward monitoring sensors are installed on both sides or four corners of the lifting equipment.

[0039] Based on the signal feedback from the monitoring sensors of the four groups of wire rope tightness monitoring devices and the signal feedback from the monitoring sensors of the sling in place monitoring device, an anti-loosening detection system can be formed to intervene in the action of the drum device to prevent the drum device from continuing to move under abnormal circumstances, causing the wire rope to become loose or tangled.

[0040] A second aspect of the utility model provides a power exchange mechanism, including a mobile platform, a drum device, a fixed pulley, a sling, a movable pulley, and a wire rope;

[0041] The mobile platform is equipped with a drum device, which outputs 4 sets of wire rope hoisting systems at the same time.

[0042] The 4 sets of wire rope hoisting systems are guided by fixed pulleys located on the mobile platform and extend downward from the four corners of the mobile platform;

[0043] There are movable pulleys at the four corners of the lifting device; each set of wire rope hoisting system passes through one movable pulley;

[0044] A wire rope anti-loosening system as described above is provided;

[0045] Among them, the wire rope tension status monitoring device is installed at the fixed pulley or movable pulley of each set of wire rope hoisting system;

[0046] The spreader in place monitoring device is installed on the spreader.

[0047] The power exchange mechanism of the utility model adopts a wire rope anti-loosening system, so that the drum device can be controlled according to the state of the wire rope and the position of the sling, so as to prevent the drum device from continuing to move under abnormal circumstances, causing the wire rope to become loose or tangled. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic diagram of the overall structure of the battery replacement mechanism for electric trucks;

[0049] Figure 2 It is a schematic diagram of the wire rope system structure of the power exchange mechanism;

[0050] Reference numerals in the figure: 13-trolley beam, 14-trolley, 15-movable platform, 16-reel device, 17-fixed pulley, 18-sling, 19-movable pulley, 10-wire rope;

[0051] Figure 3 It is a schematic diagram of the overall structure of the tension state of the first embodiment of the wire rope tension state monitoring device of the utility model;

[0052] Figure 4 It is a schematic diagram of the overall structure of the relaxed state of the first embodiment of the wire rope tightness monitoring device of the utility model;

[0053] Figure 5 This is a schematic diagram of the overall structure of a second embodiment of a device for monitoring the tightness of a steel wire rope according to the utility model;

[0054] Figure 6 The overall structure of the third embodiment of the wire rope tightness monitoring device of the utility model is shown in FIG. Figure 1 ;

[0055] Figure 7 The overall structure of the third embodiment of the wire rope tightness monitoring device of the utility model is shown in FIG. Figure 2 ;

[0056] Figure 8 The overall structure of the fourth embodiment of the wire rope tightness monitoring device of the utility model is shown in FIG. Figure 1 ;

[0057] Fig. 9 The overall structure of the fourth embodiment of the wire rope tightness monitoring device of the utility model is shown in FIG. Figure 2 ;

[0058] Fig.10 It is a schematic diagram of the overall structure of the hanger in place monitoring device of the utility model;

[0059] Fig.11 This is a schematic diagram of the application of the wire rope tightness status monitoring device of the utility model in a power exchange mechanism. DETAILED DESCRIPTION

[0060] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0061] The utility model mainly arranges a wire rope anti-loosening system in a power exchange mechanism, wherein the wire rope anti-loosening system comprises a wire rope tightness state monitoring device and a hoisting device in place monitoring device.

[0062] Among them, the wire rope tension status monitoring device is installed at each of the four groups of wire rope lifting systems.

[0063] Among them, the wire rope tightness status monitoring device is installed at the fixed pulley of the wire rope lifting system (i.e. the mobile platform side) or the movable pulley (i.e. the sling side); the mobile platform and the sling are connected by a wire rope, which is a highly flexible adjustment space and basically does not have the conditions for installing monitoring components.

[0064] Embodiment 1 of the device for monitoring the tightness of a wire rope

[0065] like Figure 3 , Figure 4 As shown, it is installed at the fixed pulley 17 on the side of the mobile platform.

[0066] A mounting bracket 21 is provided, and a guide hole 22 is provided on the mounting bracket 21, and a retractable guide rod 23 is provided in the guide hole 22; a wheel frame 24 is installed at the end of the guide rod 23, and a guide wheel 25 is provided on the wheel frame 24, and the guide wheel 25 is against the wire rope 10; a reset spring 26 is sleeved on the guide rod 23, and the reset spring 26 is located between the wheel frame 24 and the guide hole 22, and the reset spring 26 is in a compressed state, and the wheel frame 24 is always pushed out; a monitoring sensor 28 is provided, which can monitor the position of the guide rod 23 or the wheel frame 24. In this embodiment, a monitoring piece 27 is fixed to the tail of the guide rod 23, and the monitoring sensor 28 monitors the position of the guide rod 23 by monitoring the position of the monitoring piece 27.

[0067] like Figure 3 As shown, the monitoring device is located on the inner side of the wire rope 10. When the wire rope 10 is in a taut state, the wire rope 10 is away from the monitoring device, and the guide wheel 25 is pressed against the wire rope 10 by the reset spring 26. At this time, the guide rod 23 is in an extended state, driving the monitoring piece 27 away from the sensing area of ​​the monitoring sensor 28.

[0068] like Figure 4 As shown, when the wire rope 10 is in a relaxed state, the wire rope 10 moves inward due to its own gravity, thereby driving the guide wheel 25 to move inward, the wheel frame 24 compresses the reset spring 26, and pushes the guide rod 23 and the monitoring piece 27 to move inward, so that the monitoring piece 27 reaches the sensing area of ​​the monitoring sensor 28. The monitoring sensor 28 detects the monitoring piece 27 and outputs a signal, thereby alarming that the wire rope 10 on this side is in a relaxed state.

[0069] When the wire rope 10 is tightened again, the wire rope 10 gradually moves away from the monitoring device, and the guide wheel 25 is always in contact with the wire rope 10 under the action of the return spring 26 until it is restored to the position as shown in FIG. Figure 3 In the state shown, the monitoring piece 27 moves out of the sensing area of ​​the monitoring sensor 28 again.

[0070] The monitoring sensor 28 may be a photoelectric sensor or a Hall sensor.

[0071] Embodiment 2 of the device for monitoring the tightness of a steel wire rope

[0072] like Figure 5 As shown, it is installed at the fixed pulley 17 on the side of the mobile platform.

[0073] The position of the steel wire rope 10 when in a taut state is different from the position of the steel wire rope 10 ′ when in a relaxed state, so a monitoring sensor 32 is installed on the path of the steel wire rope 10 through a bracket 31 to monitor the position of the steel wire rope 10 .

[0074] When the steel wire rope 10 changes from a taut state to a slack state, the position of the steel wire rope 10 changes, thereby triggering the monitoring sensor 32 to warn that the steel wire rope 10 on this side is in a slack state.

[0075] The monitoring sensor 32 may be a photoelectric sensor, a Hall sensor, or a laser ranging sensor.

[0076] Embodiment 3 of the device for monitoring the tightness of a wire rope

[0077] like Figure 6 , Figure 7 As shown, it is installed at the movable pulley 19 on the side of the spreader.

[0078] On the sling 18, or on the base of the movable pulley 19, there is a mounting bracket 41; a rocker arm 42 is mounted on the mounting bracket 41 via a hinge 43, and a reset torsion spring 44 is arranged between the mounting bracket 41 and the rocker arm 42; a guide wheel 45 is arranged on the top of the rocker arm 42; the guide wheel 45 is located on the inner side of the wire rope 10, and the reset torsion spring 44 is in a compressed state, so that the rocker arm 42 together with the guide wheel 45 are swung outward and abut against the inner side of the wire rope 10; a monitoring bracket 46 is provided, on which a monitoring sensor 47 is installed, and preferably, a long strip-shaped adjusting groove 461 is provided on the monitoring bracket 46, and the monitoring sensor 47 is installed in the adjusting groove 461 with an adjustable position.

[0079] According to the angular position of the guide wheel 45 and the swing rod 42 when the wire rope 10 is in a taut state, the position of the monitoring sensor 47 is adjusted so that the monitoring sensor 47 can sense the swing rod 42. When the wire rope 10 is slack, the position of the wire rope 10 changes, thereby causing the guide wheel 45 and the swing rod 42 to swing, causing the swing rod 42 to deviate from the sensing area of ​​the monitoring sensor 47, thereby alarming that the wire rope 10 on this side is in a slack state.

[0080] The monitoring sensor 47 may be a photoelectric sensor or a Hall sensor.

[0081] Embodiment 4 of the device for monitoring the tightness of a steel wire rope

[0082] like Figure 8 , Fig. 9 As shown, it is installed at the movable pulley 19 on the side of the spreader.

[0083] A mounting bracket 51 is provided on the sling 18 or on the base of the movable pulley 19 ; a monitoring sensor 52 is provided on the mounting bracket 51 .

[0084] The movable pulley 19 is provided with a wheel groove 191 , and the steel wire rope 10 is embedded in the wheel groove 191 .

[0085] The monitoring sensor 52 is a photoelectric sensor for opposite radiation, and is located on both sides of the movable pulley 19 , and the monitoring light path is located directly below the bottom of the wheel groove 191 , and is lower than the bottom of the wire rope 10 wound around the wheel groove 191 .

[0086] When the wire rope 10 is in a taut state, the wire rope 10 is tightly wound around the bottom of the wheel groove 191 without any sagging, and the monitoring light path of the monitoring sensor 52 is not blocked at this time; when the wire rope 10 is in a relaxed state, the wire rope 10 is naturally drooped by gravity and leaves the bottom of the wheel groove 191, that is, the wire rope 10 invades the monitoring light path of the monitoring sensor 52, blocking the monitoring sensor 52, thereby alarming that the wire rope 10 on this side is in a relaxed state.

[0087] The above four types of wire rope tension status monitoring devices can be installed one by one in the wire rope lifting system, or one set can be installed on the upper (mobile platform side) or lower (hanging device side) of a wire rope lifting system.

[0088] Spreader in place monitoring device

[0089] like Fig.10 As shown, downward monitoring sensors 61 are provided on both sides or four corners of the sling 18 to detect whether there are objects under the sling 18. The downward monitoring sensors 61 are photoelectric sensors, Hall sensors, or laser ranging sensors, which mainly monitor the position of the sling 18 from the battery pack. When the sling 18 is docked with the battery pack, the downward monitoring sensors 61 send a signal, indicating that the sling is in place.

[0090] The wire rope anti-loosening system of the utility model is installed in the power exchange mechanism, which can be referred to Fig.11 As shown, each of the four wire rope hoisting systems is equipped with a set of wire rope tension monitoring devices; the hoisting device 18 is provided with a hoisting device in place monitoring device, that is, downward monitoring sensors 61 are installed on both sides of the hoisting device 18. According to the signal feedback of the monitoring sensors of the four wire rope tension monitoring devices (when the wire rope is in a tight state, the output is "0"; when the wire rope is in a loose state, the output is "1"), and the signal feedback of the monitoring sensors of the two hoisting device in place monitoring devices (no objects are detected under the hoisting device, the output is "0"; objects are detected under the hoisting device, the output is "1"), a set of anti-loosening detection system can be formed to intervene in the action of the drum device 16.

[0091]

[0092] The preferred embodiments of the present invention have been specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all within the scope defined by the claims of this application.

Claims

1. The wire rope anti-loosening system is characterized by: Including wire rope tightness monitoring device and hoisting equipment in place monitoring device; The wire rope tension monitoring device is installed at each location in the 4 sets of wire rope hoisting systems; The wire rope tension status monitoring device is installed at the fixed pulley or movable pulley of the wire rope hoisting system; The spreader in place monitoring device is installed on the spreader; The wire rope tension monitoring device is provided with a monitoring sensor for monitoring whether the wire rope is in a tight state or a loose state; The spreader in place monitoring device is provided with a downward monitoring sensor for monitoring whether there is a battery pack under the spreader.

2. The wire rope anti-loosening system according to claim 1, characterized in that: The wire rope tension status monitoring device is installed at the fixed pulley on the mobile platform side; A mounting bracket is provided, a guide hole is provided on the mounting bracket, and a retractable guide rod is provided in the guide hole; A wheel frame is installed at the end of the guide rod, and a guide wheel is arranged on the wheel frame, and the guide wheel is against the wire rope; A return spring is sleeved on the guide rod and is located between the wheel frame and the guide hole; The return spring is in a compressed state, and the wheel carrier is pushed out by the return spring; A monitoring sensor is provided to monitor the position of the guide rod or the wheel frame.

3. The wire rope anti-loosening system according to claim 2, characterized in that: A monitoring piece is fixed at the tail of the guide rod, and the monitoring piece moves synchronously with the guide rod; The monitoring sensor is matched with the monitoring sheet.

4. The wire rope anti-loosening system according to claim 1, characterized in that: The wire rope tension status monitoring device is installed at the fixed pulley on the mobile platform side; The monitoring sensor is placed on the path of the wire rope through a bracket.

5. The wire rope anti-loosening system according to claim 1, characterized in that: The wire rope tension status monitoring device is installed at the movable pulley on the side of the sling; A mounting bracket is provided on the sling or on the base of the movable pulley; A swing rod is installed on the mounting bracket through a hinge, and a reset torsion spring is provided between the mounting bracket and the swing rod; A guide wheel is provided at the top of the swing rod, and the guide wheel is located on the inner side of the wire rope; The return torsion spring is in a compressed state, and the return torsion spring swings the pendulum rod and the guide wheel outward, and the guide wheel always rests on the wire rope; A monitoring bracket is provided and a monitoring sensor is installed; The monitoring sensor monitors the position of the pendulum.

6. The wire rope anti-loosening system according to claim 5, characterized in that: The monitoring bracket is provided with a long strip-shaped adjusting groove, and the monitoring sensor is installed in the adjusting groove with an adjustable position.

7. The wire rope anti-loosening system according to claim 1, characterized in that: The wire rope tension status monitoring device is installed at the movable pulley on the side of the sling; The monitoring sensor is installed on the hanger or the base of the movable pulley through the mounting bracket; The movable pulley is provided with a wheel groove, and the wire rope is embedded in the wheel groove; The monitoring sensor is a photoelectric sensor located on both sides of the movable pulley; The monitoring light path of the opposing photoelectric sensor is located just below the bottom of the wheel groove; The monitoring light path of the opposing photoelectric sensor is lower than the bottom of the wire rope wound on the wheel groove.

8. The wire rope anti-loosening system according to claim 1, characterized in that: Downward monitoring sensors are provided on both sides or four corners of the spreader.

9. The power exchange mechanism includes a mobile platform, a drum device, a fixed pulley, a sling, a movable pulley, and a wire rope; The mobile platform is equipped with a drum device, which outputs 4 sets of wire rope hoisting systems at the same time. The 4 sets of wire rope hoisting systems are guided by fixed pulleys located on the mobile platform and extend downward from the four corners of the mobile platform; There are movable pulleys at the four corners of the lifting device; each set of wire rope hoisting system passes through one movable pulley; It is characterized in that A wire rope anti-loosening system as claimed in any one of claims 1 to 8 is provided; Among them, the wire rope tension status monitoring device is installed at the fixed pulley or movable pulley of each set of wire rope hoisting system; The spreader in place monitoring device is installed on the spreader.

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