Hanging basket lifting device

Abstract

The invention discloses a hanging basket lifting device which comprises a shell, a rotating disc, a pressing wheel, a weight limiting sensor, a first elastic piece and a swinging piece, the shell is configured to be connected with a hanging basket, and a rotating driving mechanism and a positioning wheel are arranged on the shell; the rotating disc can be rotatably connected to the shell, the positioning wheel and the rotating disc are configured to allow the cable to be wound in sequence, and the area, located between the positioning wheel and the rotating disc, of the cable is a pressure section; the pressing wheel can move towards the turntable to press the cable on the excircle surface of the turntable, and the rotation driving mechanism is in transmission connection with the turntable to drive the turntable to rotate; the swing part can be rotatably connected to the shell and is provided with an abutting part and a triggering part, the first elastic part is used for forcing the abutting part to be tightly pressed on the pressure section, and when the tension of the pressure section reaches a preset value, the pressure section drives the triggering part to rotate to the triggering position of the weight limiting sensor and triggers the weight limiting sensor, so that the rotation driving mechanism stops rotating; and early warning can be given in time and lifting of the hanging basket is stopped.

Description

Technical Field

[0001] This invention relates to the field of high-altitude work equipment technology, and in particular to a suspended platform lifting device. Background Technology

[0002] An aerial work platform (AWP) provides operating space and a platform for mounting various tools. An AWP has a load-bearing limit; as long as the total weight of the platform, operators, and tools does not exceed this limit, the platform, cables, and lifting devices can operate normally, ensuring the safety, stability, and lifespan of the AWP. Currently, overloading is typically prevented by weighing the operators and tools. However, this method is prone to failure due to human error and inaccuracies in weighing tools. Furthermore, adding or changing operators / tools, or transferring goods during work can all cause overloading. If overloading is not detected promptly, it can lead to minor issues such as cable wear, lifting device jamming, and platform deformation; or more serious accidents such as cable breakage, lifting device jamming or damage, and platform falls. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a suspended platform lifting device capable of real-time detection of the total weight of the suspended platform, its operators, and tools, providing timely warnings and stopping the lifting of the platform, thereby improving safety.

[0004] According to an embodiment of the present invention, a suspended platform lifting device includes a housing, a turntable, a weight limiting device, and a weight limiting sensor. The housing is configured to be connected to the suspended platform, and a rotary drive mechanism and a positioning wheel are provided on the housing. The turntable is rotatably connected to the housing, and the positioning wheel and the turntable are configured for a cable to be wound sequentially. The area between the positioning wheel and the turntable is a pressure section for the cable. The weight limiting device includes a pressure wheel that can move towards the turntable to press the cable onto the outer circumferential surface of the turntable. The rotary drive mechanism is throttlely connected to the turntable to drive the turntable to rotate. The weight limiting sensor includes a weight limiting sensor, a first elastic element, and a swinging element. The rotary drive mechanism is configured to... When the sensor is triggered, the rotation stops. The swing member is rotatably connected to the housing. The swing member has an abutment portion and a trigger portion. The first elastic member acts on the swing member and applies a first torque to the swing member in a first rotation direction. The pressure section presses against the abutment portion and applies a second torque to the swing member in a second rotation direction. The first rotation direction is opposite to the second rotation direction. When the tension of the pressure section reaches a preset value, the second torque is greater than the first torque, causing the swing member to rotate in the second rotation direction. The trigger portion rotates to the trigger position of the weight limit sensor and triggers the weight limit sensor, thereby stopping the rotation drive mechanism from rotating.

[0005] It has at least the following beneficial effects: Since the swing member is rotatably connected to the housing, under the elastic force of the first elastic member, the swing member rotates, causing the abutting part of the swing member to abut against the pressure section. When the basket is unloaded or the load of the basket is small, the tension of the pressure section is small, and the tightness of the pressure section is also small. The triggering part remains away from the triggering position of the weight limit sensor. However, when the load of the basket approaches the bearing limit, the tightness of the pressure section is large, and the pressure section drives the swing member to rotate in the opposite direction, causing the triggering part to rotate to the triggering position of the weight limit sensor, triggering the weight limit sensor. This enables real-time detection of the total weight of the basket and the operators and tools on it, timely warning and stopping the lifting of the basket, avoiding basket overload, reducing cable wear, reducing the risk of cable breakage, lifting device jamming and jamming, and basket deformation and falling, and improving safety.

[0006] According to some embodiments of the present invention, the connection point between the swing member and the housing is a first hinge point, the contact points between the positioning wheel, the first hinge point, and the turntable and the pressure section are triangularly distributed, the abutment part is a rotating wheel, the connection point between the swing member and the rotating wheel is a second hinge point, the trigger part, the first hinge point, and the second hinge point are triangularly distributed, and the distance between the trigger part and the first hinge point is greater than the distance between the second hinge point and the first hinge point.

[0007] According to some embodiments of the present invention, the housing has a storage cavity, the swing member is disposed in the storage cavity, the swing member has a first limiting part, the first limiting part can abut against the inner wall of the storage cavity to prevent the trigger part from touching the weight sensor.

[0008] According to some embodiments of the present invention, the swing member has a limiting channel, the wheel is disposed in the limiting channel, and the limiting channel is used to limit the passage of the cable.

[0009] According to some embodiments of the present invention, the positioning wheel is connected to the inner wall of the receiving cavity by a first pin, and the swing member has a second limiting part that can abut against the first pin to limit the rotation range of the swing member in the direction of the pressure section, so that the two openings of the limiting channel remain facing the positioning wheel and the turntable, respectively.

[0010] According to some embodiments of the present invention, a rope-separating component is further provided between the positioning wheel and the turntable. The rope-separating component has a first channel and a second channel. The first channel extends from the positioning wheel to the turntable, and the second channel extends along a first direction and a second direction. The first direction is parallel to the axial direction of the turntable, and the trajectory of the second direction is an arc. The center of the arc coincides with the center of the turntable. The outer circumferential surface of the turntable is provided with an arc-shaped limiting groove. The first channel, the limiting groove, and the second channel are sequentially used for the cable to pass through.

[0011] According to some embodiments of the present invention, the weight limiting device further includes a floating frame and a second elastic element, and there are two pressure rollers, both of which are rotatably connected to the floating frame. The second elastic element is used to force the floating frame to move toward the turntable so that the two pressure rollers press the cable onto the outer circumference surface of the turntable.

[0012] According to some embodiments of the present invention, the weight limiting device further includes a swing arm and an adjustment group, the connecting end of the swing arm is hinged to the housing, the floating frame is rotatably connected to the middle section of the swing arm, and the adjustment group is used to adjust the tension of the second elastic element to adjust the pressure of the two pressure rollers on the cable.

[0013] According to some embodiments of the present invention, the adjustment assembly includes a pull rod and an adjustment member threadedly connected to one end of the pull rod, the other end of the pull rod being hinged to the swing end of the swing arm, and the two ends of the second elastic member respectively abutting against the housing and the adjustment member.

[0014] According to some embodiments of the present invention, the housing is provided with an upper guide tube and a lower guide tube, the upper guide tube and the lower guide tube are distributed vertically, the line connecting the upper guide tube and the lower guide tube intersects the line connecting the positioning wheel and the turntable, the upper guide tube is used for the cable to pass through so as to guide the cable to the positioning wheel, and the lower guide tube is used for the cable to pass through after bypassing the turntable.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure after the cover plate is hidden in an embodiment of the present invention; Figure 3 for Figure 2 A magnified view of a portion of point A in the middle; Figure 4 This is a schematic diagram of the state when the triggering unit does not trigger the weight limit sensor according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the state when the triggering part of the triggering unit triggers the weight limit sensor according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the rope-splitting component according to an embodiment of the present invention; Figure 7 This is a side view of the rope-splitting component according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the rope component, the weight limiting device, and the turntable according to an embodiment of the present invention; Icon labels: Cable 1, Pressure Section 11; Housing 100, rotary drive mechanism 110, positioning wheel 120, first pin 121, upper guide tube 130, lower guide tube 140, guide block 150; Turntable 200; Weight limiting device 300, pressure roller 310, floating frame 320, second elastic element 330, swing arm 340, pull rod 350, adjusting element 360; Weight limiting sensor 400, weight limiting sensor 410, first elastic element 420, swing element 430, trigger part 431, first limiting part 432, second limiting part 433, third pin 434, abutting part 435; First hinge point 500; Second hinge point 600; Rope component 700, first channel 710, second channel 720. Detailed Implementation

[0017] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0018] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0019] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0020] Reference Figures 1 to 5 As shown, this invention discloses a suspended platform lifting device, including a housing 100, a turntable 200, a weight-limiting device 300, and a weight-limiting sensor 400. The housing 100 is configured to be connected to the suspended platform, and a rotary drive mechanism 110 and a positioning wheel 120 are provided on the housing 100. The turntable 200 is rotatably connected to the housing 100. The positioning wheel 120 and the turntable 200 are configured for a cable 1 to be wound around sequentially. The area of ​​the cable 1 between the positioning wheel 120 and the turntable 200 is a pressure section 11. The weight-limiting device 300 includes a pressure wheel 310, which is movable towards the turntable 200. The cable 1 is pressed against the outer circumferential surface of the turntable 200. The rotary drive mechanism 110 is connected to the turntable 200 to drive the turntable 200 to rotate. The weight limit sensor 400 includes a weight limit sensor 410, a first elastic element 420, and a swing element 430. The rotary drive mechanism 110 is configured to stop rotating when the weight limit sensor 410 is triggered. The swing element 430 is rotatably connected to the housing 100. The swing element 430 has an abutment portion 435 and a trigger portion 431. The first elastic element 420 acts on the swing element 430 and applies pressure to the swing element 430 along a first rotation direction (such as facing). Figure 4 or Figure 5 The first torque (clockwise rotation) is applied to the oscillating member 430, and the pressure section 11 presses against the abutment part 435 and applies a second rotational direction (as shown when facing the object) to the oscillating member 430. Figure 4 or Figure 5The second torque (rotating counterclockwise) is the first torque, which is opposite to the second rotation direction. When the tension of the pressure section 11 reaches a preset value, the second torque is greater than the first torque, causing the swing member 430 to rotate in the second rotation direction. The trigger part 431 rotates to the trigger position of the weight limit sensor 410 and triggers the weight limit sensor 410, so that the rotation drive mechanism 110 stops rotating.

[0021] The suspended platform lifting device is fixedly connected to the suspended platform via the housing 100. The cable 1 used to lift the suspended platform is looped around the positioning wheel 120 and wound around the turntable 200. The pressure wheel 310 moves towards the turntable 200, pressing the cable 1 tightly against the outer surface of the turntable 200, increasing the friction between the cable 1 and the outer surface of the turntable 200. The rotary drive mechanism 110 drives the turntable 200 to rotate, and the turntable 200 drives the cable 1. Since the cable 1 is suspended, the housing 100 and the suspended platform lifting device will rise and fall on the cable 1, thereby lifting or releasing the suspended platform. The positioning wheel 120 and the turntable 200 position the cable 1 in the pressure section 11 between the positioning wheel 120 and the turntable 200. The greater the load of the suspended platform, the tighter the pressure section 11 becomes. Since the swinging component 430 is rotatably connected to the housing 100, such as... Figure 4 As shown, under the elastic force of the first elastic member 420, the swing member 430 rotates along the first rotation direction, causing the abutting part 435 of the swing member 430 to press against the pressure section 11. When the basket is unloaded or the load of the basket is small, the pressure section 11 is smaller, and the tension of the pressure section 11 is also smaller. The trigger part 431 remains away from the trigger position of the weight limit sensor 410 (e.g., Figure 4 (The position of trigger part 431), such as Figure 5 As shown, when the load of the suspended platform approaches its bearing limit, the tension of the pressure section 11 is relatively high. That is, when the tension of the pressure section 11 reaches the preset value, the pressure section 11 drives the swing member 430 to rotate in the second rotation direction, causing the trigger part 431 to rotate to the trigger position of the weight limit sensor 410 (as shown). Figure 5 The triggering unit 431 triggers the weight limit sensor 410 to detect the total weight of the suspended platform and the workers and tools on it in real time, and promptly issues warnings and stops the lifting of the suspended platform to avoid overloading, reduce cable wear, reduce the risk of cable breakage, jamming and jamming of the lifting device, and deformation and fall of the suspended platform, thereby improving safety.

[0022] It is conceivable that the preset tension value of pressure section 11 depends on the specific conditions of the actual suspended platform and cable 1, and is not limited here. The suspended platform lifting device also includes a controller and an alarm device. The controller is electrically connected to the alarm device, the weight limit sensor 410, and the rotary drive mechanism 110. The controller controls the activation or deactivation of the alarm device and the rotary drive mechanism 110 based on the signal fed back by the weight limit sensor 410. The alarm device includes an indicator light and a buzzer. The rotary drive mechanism 110 is a servo motor. The suspended platform lifting device also includes a battery. The rotary drive mechanism 110 is a DC 36V servo motor. The battery is electrically connected to the controller, which powers the controller, thereby powering the alarm device, the weight limit sensor 410, and the rotary drive mechanism 110. The battery powers the entire suspended platform lifting device, eliminating the need for an external power supply, freeing it from the constraints of an extra-long cable, and avoiding the trouble of accidental cable scuffing during lifting.

[0023] The controller is electrically connected to a temperature sensor, which is located inside the servo motor. The temperature sensor is used to detect the temperature of the servo motor. When the temperature of the servo motor is too high, the controller controls the servo motor to reduce its speed or stop rotating, thereby reducing the rate of temperature rise of the servo motor and preventing it from overheating.

[0024] The servo motor has overcurrent protection. When the current of the servo motor is too high, the controller reduces the current of the servo motor to prevent the servo motor from being damaged due to overload of the basket.

[0025] The servo motor has a stall protection function. The output shaft of the rotary drive mechanism 110 is connected to an encoder, which can detect the rotation speed of the rotary drive mechanism 110 in real time. When the basket descends, due to gravity, the load of the basket drives the servo motor to rotate at high speed through the cable 1 and the turntable 200. When the speed of the servo motor is too high, the controller will increase the back current of the servo motor to prevent stall from occurring.

[0026] In some of these embodiments, such as Figure 2 or Figure 4 or Figure 5 As shown, the output shaft of the rotary drive mechanism 110 is connected to an electromagnetic brake 111. The electromagnetic brake 111 is electrically connected to the controller. The electromagnetic brake 111 is used to brake the output shaft of the rotary drive mechanism 110 to prevent the rotary drive mechanism 110 from stalling. The electromagnetic brake 111 is connected to a handle, which can be directly operated to achieve manual braking.

[0027] In some embodiments, the output shaft of the rotary drive mechanism 110 is connected to the turntable 200 via a gear reducer. The gear reducer has the function of reducing speed and increasing torque, and can convert the high speed and low torque of the rotary drive mechanism 110 into the low speed and high torque of the turntable 200.

[0028] In some of these embodiments, such as Figure 4 or Figure 5 As shown, the connection point between the swing member 430 and the housing 100 is the first hinge point 500. The contact points between the positioning wheel 120, the first hinge point 500, and the turntable 200 and the pressure section 11 are triangularly distributed. When the cable 1 passes around the positioning wheel 120 and wraps around the turntable 200, a pressure section 11 is formed between the positioning wheel 120 and the turntable 200. The swing member 430 can swing toward the pressure section 11 so that the abutment part 435 can always remain against the pressure section 11.

[0029] like Figure 4 or Figure 5 As shown, the abutment part 435 is a rotating wheel that can rotate on the swing member 430. The axis of the rotating wheel is parallel to the rotation axis of the swing member 430. The swing member 430 abuts against the pressure section 11 through the outer surface of the rotating wheel. The connection point between the swing member 430 and the rotating wheel is the second hinge point 600. The trigger part 431, the first hinge point 500, and the second hinge point 600 are arranged in a triangle. The distance between the trigger part 431 and the first hinge point 500 is greater than the distance between the second hinge point 600 and the first hinge point 500. The position of the first hinge point 500 does not change, and the angle of rotation of the second hinge point 600 around the first hinge point 500 is equal to the position of the first hinge point 500. The angle at which the trigger part 431 rotates around the first hinge point 500 is greater than the swing or rotation distance of the trigger part 431 than that of the second hinge point 600. Therefore, when the pressure section 11 is at different tension levels and the wheel rotates, the pressure section 11 drives the wheel to swing a smaller distance, while the trigger part 431 can move a larger distance, thereby triggering the weight limit sensor 410. The swing member 430 amplifies the tension of the pressure section 11. A small change in the pressure section 11 can drive the trigger part 431 to make a large stroke displacement, ensuring accurate triggering of the weight limit sensor 410 and improving the sensitivity of the weight limit sensor 410.

[0030] In some of these embodiments, such as Figure 2 and Figure 3 As shown, the housing 100 has a storage cavity, and the positioning wheel 120 is connected to the inner wall of the storage cavity through the first pin 121. The housing 100 serves to store and protect the positioning wheel 120, and the positioning wheel 120 can rotate on the housing 100.

[0031] like Figure 3As shown, the swing member 430 is disposed in the storage cavity, and the housing 100 serves to store and protect the swing member 430. The swing member 430 has a first limiting part 432, which can abut against the inner wall of the storage cavity, thereby limiting the rotation range of the trigger part 431 in the direction of the weight sensor 410, and preventing the trigger part 431 from touching the weight sensor 410, thus avoiding damage to the weight sensor 410 by the trigger part 431.

[0032] In some of these embodiments, such as Figure 4 or Figure 5 As shown, the swing member 430 has a first side, a second side, a third side and a fourth side connected end to end in sequence. The first side, the second side, the third side and the fourth side form a limiting channel. The rotating wheel is located in the limiting channel. The limiting channel is used for the cable 1 to pass through. The limiting channel serves to limit the rotating wheel, and also serves to guide and limit the cable 1. The cable 1 can pass through the limiting channel, and ensures that the outer circumference surface of the rotating wheel can abut against the pressure section 11 of the cable 1.

[0033] In some embodiments, the first side, second side, third side, and fourth side form a rectangular structure. The second side and fourth side are parallel to each other and both perpendicular to the axis of the rotating wheel. The first side and third side are both parallel to the axis of the rotating wheel and parallel to the axis of the positioning wheel 120. The rotating wheel is connected to the second side and fourth side by a second pin to fix the position of the rotating wheel. The second side and fourth side are rotatably connected to the inner wall of the receiving cavity by a third pin 434. The second pin and third pin 434 are both parallel to the axis of the rotating wheel to fix the position of the swing member 430 and enable the swing member 430 to rotate around the central axis of the third pin 434 on the housing 100.

[0034] In some of these embodiments, such as Figure 3 As shown, the positioning wheel 120 is connected to the inner wall of the receiving cavity through the first pin 121. The first pin 121, the second pin, and the third pin 434 are all parallel to the axis of the rotating wheel. The swing member 430 has a second limiting part 433. The second limiting part 433 can abut against the first pin 121 to limit the rotation range of the swing member 430 in the direction of the pressure section 11, so that the two openings of the limiting channel are respectively kept facing the positioning wheel 120 and the turntable 200, so that the cable 1 can pass smoothly through the limiting channel after passing around the positioning wheel 120, and then the cable 1 can be wound around the turntable 200.

[0035] Specifically, the first limiting part 432 and the second limiting part 433 are respectively provided on the first side and the third side, and the provision of the first limiting part 432 and the second limiting part 433 limits the range of forward and reverse rotation of the swing member 430.

[0036] The housing 100 includes a base plate and a cover plate, which together form a storage cavity. The second and fourth sides are rotatably connected to the base plate and cover plate respectively via two third pins 434, and a first pin 121 connects the base plate and cover plate. The first elastic element 420 is a torsion spring, sleeved on the third pins 434. The first elastic element 420 has a strong torsional force, enabling it to force the abutting portion 435 of the swing element 430 against the pressure section 11, adapting to different tension levels in the pressure section 11.

[0037] In some of these embodiments, such as Figure 2 As shown, the suspended platform lifting device also includes a rope-splitting component 700 disposed between the positioning wheel 120 and the turntable 200. The rope-splitting component 700 is connected to the housing 100 to fix the position of the rope-splitting component 700.

[0038] like Figure 6 and Figure 7 As shown, the rope divider 700 has a first channel 710 and a second channel 720. The first channel 710 extends along the positioning wheel 120 to the turntable 200, and the second channel 720 extends along a first direction and a second direction. The first direction is parallel to the axis of the turntable 200, and the trajectory of the second direction is an arc. The center of the arc coincides with the center of the turntable 200. The outer circular surface of the turntable 200 is provided with an arc-shaped limiting groove. The first channel 710, the limiting groove, and the second channel 720 are sequentially used for the cable 1 to pass through. The rope divider 700 serves to limit the cable 1, preventing different areas of the cable 1 from contacting each other and ensuring that the cable 1 can move smoothly relative to the turntable 200. The limiting groove serves to limit the cable 1 on the turntable 200, so that when the turntable 200 rotates, the cable 1 can be prevented from detaching from the outer circular surface of the turntable 200.

[0039] When cable 1 is connected to the suspended platform lifting device, external equipment is used to drive cable 1 to move, such as... Figure 4 or Figure 5 As shown, the end of cable 1 first moves along the direction from positioning wheel 120 to turntable 200, so that the end of cable 1 passes through the first channel 710 and approaches the inner wall of the limiting groove of turntable 200. Then, the end of cable 1 wraps around the limiting groove with the central axis of turntable 200 as the center until the end of cable 1 abuts against the inner wall of the second channel 720. Under the guidance of the inner wall of the second channel 720, the end of cable 1 moves synchronously along the first direction and the second direction. During the movement of cable 1, cable 1 changes from being coplanar with turntable 200 to not being coplanar with turntable 200. Cable 1 gradually moves away from turntable 200, thereby causing the end of cable 1 to be offset from other areas of cable 1. While cable 1 is wrapped around turntable 200, it avoids mutual contact between different areas of cable 1.

[0040] It should be added that, such as Figure 2 or Figure 4 orFigure 5 As shown, the housing 100 has a plurality of guide blocks 150 on the periphery of the turntable 200 for guiding the cable 1, so that after the end of the cable 1 passes through the first channel 710, due to the structural characteristics of the cable 1 itself, the end of the cable 1 first abuts against the guide block 150. As the end of the cable 1 continues to move, the guide block 150 guides the end of the cable 1 into the limiting groove, so that the cable 1 can be wound around the turntable 200 and the end of the cable 1 abuts against the inner wall of the second channel 720.

[0041] In some of these embodiments, such as Figure 2 and Figure 8 As shown, the weight limiting device 300 also includes a floating frame 320 and a second elastic element 330. There are two pressure rollers 310, both of which are rotatably connected to the floating frame 320. The second elastic element 330 is used to force the floating frame 320 to move towards the turntable 200 so that the two pressure rollers 310 press the cable 1 against the outer circular surface of the turntable 200. The two pressure rollers 310 make the cable 1 and the outer circular surface of the turntable 200 have two close contact points at different positions, so that the cable 1 can press more tightly against the outer circular surface of the turntable 200. Even if one pressure roller 310 is damaged or fails, the other pressure roller 310 can work normally, making the reliability of the suspended basket lifting device higher.

[0042] In some embodiments, the weight limiting device 300 further includes a swing arm 340 and an adjustment group. The connecting end of the swing arm 340 is hinged to the housing 100. The floating frame 320 is rotatably connected to the middle section of the swing arm 340, so that the floating frame 320 and the two pressure rollers 310 on the floating frame 320 can swing in the swing arm 340, thereby allowing the two pressure rollers 310 to press the cable 1 against the outer circumference surface of the turntable 200.

[0043] The adjustment group is used to adjust the tension of the second elastic element 330, so as to adjust the pressure of the two pressure rollers 310 on the cable 1. The greater the pressure of the pressure rollers 310 on the cable 1, the greater the friction between the cable 1 and the outer surface of the turntable 200.

[0044] In some embodiments, the adjustment assembly includes a pull rod 350 and an adjustment member 360 threaded to one end of the pull rod 350. The other end of the pull rod 350 is hinged to the swing end of the swing arm 340. The two ends of the second elastic member 330 abut against the housing 100 and the adjustment member 360, respectively. The second elastic member 330 forces the swing arm 340 to swing in the direction of the turntable 200. The swing arm 340 carries the floating frame 320 and two pressure rollers 310 to swing in the direction of the turntable 200, thereby causing the pressure rollers 310 to press the cable 1 against the outer circumference surface of the turntable 200.

[0045] The pull rod 350 is a screw, and the adjusting component 360 is a nut. The second elastic component 330 is a spring, which is sleeved on the pull rod 350, with its two ends abutting against the housing 100 and the nut, respectively.

[0046] In some of these embodiments, such as Figures 2 to 5 As shown, the housing 100 is provided with an upper conduit 130 and a lower conduit 140, which are distributed vertically. The line connecting the upper conduit 130 and the lower conduit 140 intersects the line connecting the positioning wheel 120 and the turntable 200. The upper conduit 130 is used for the cable 1 to pass through, so as to guide the cable 1 onto the positioning wheel 120. The lower conduit 140 is used for the cable 1 to pass through after passing around the turntable 200, so as to limit the path of the cable 1, so that the cable 1 can smoothly pass around the positioning wheel 120 and wrap around the turntable 200.

[0047] The housing 100 has a storage cavity, in which the turntable 200, the weight limiting device 300 and the weight limiting sensor 400 are all located. The upper conduit 130 and the lower conduit 140 are respectively located on the upper side wall and the lower side wall of the housing 100, and both the upper conduit 130 and the lower conduit 140 are connected to the storage cavity, so that the cable 1 is in a state of passing through the inside of the housing 100 in the vertical direction.

[0048] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A basket lifting device, characterised in that, The application relates to a cable tension limiting device for a cableway, which comprises the following parts: a shell configured to be connected with a basket, wherein a rotating driving mechanism and a positioning wheel are arranged on the shell; a rotating disc rotatably connected to the shell, wherein the positioning wheel and the rotating disc are configured to be wound by a cable in sequence, and a region between the positioning wheel and the rotating disc is a pressure section; a weight limiting device comprising a pressure roller, wherein the pressure roller can move towards the rotating disc to press the cable against an outer surface of the rotating disc, and the rotating driving mechanism is in transmission connection with the rotating disc to drive the rotating disc to rotate; a weight limiting sensing device comprising a weight limiting sensor, a first elastic member and a swing member, wherein the rotating driving mechanism is configured to stop rotating when the weight limiting sensor is triggered, the swing member is rotatably connected to the shell, the swing member has an abutting part and a triggering part, the first elastic member acts on the swing member and applies a first torque in a first rotating direction to the swing member, the pressure section is pressed against the abutting part and applies a second torque in a second rotating direction to the swing member, the first rotating direction is opposite to the second rotating direction, when the tension of the pressure section reaches a preset value, the second torque is greater than the first torque and the swing member rotates in the second rotating direction, the triggering part rotates to a triggering position of the weight limiting sensor and triggers the weight limiting sensor to stop the rotating driving mechanism from rotating.

2. The basket lifting device of claim 1, wherein, A connecting point between the swing member and the shell is a first hinge point, the positioning wheel, the first hinge point and a contact point between the rotating disc and the pressure section are in a triangular distribution, the abutting part is a rotating wheel, a connecting point between the swing member and the rotating wheel is a second hinge point, the triggering part, the first hinge point and the second hinge point are in a triangular distribution, and a distance between the triggering part and the first hinge point is greater than a distance between the second hinge point and the first hinge point.

3. The basket lifting device of claim 2, wherein, The shell has a receiving cavity, the swing member is arranged in the receiving cavity, the swing member has a first limiting part which can abut against an inner wall of the receiving cavity to prevent the triggering part from touching the weight limiting sensor.

4. The basket lifting device of claim 3, wherein, The swing member has a limiting channel, the rotating wheel is arranged in the limiting channel, and the limiting channel is used for limiting the cable to pass through.

5. The basket lifting device of claim 4, wherein, The positioning wheel is connected to the inner wall of the receiving cavity through a first pin, the swing member has a second limiting part which can abut against the first pin to limit a rotating range of the swing member in the direction of the pressure section, so that two openings of the limiting channel are respectively kept facing the positioning wheel and the rotating disc.

6. The basket lifting device of claim 1, wherein, The device further comprises a rope separating member arranged between the positioning wheel and the rotating disc, the rope separating member has a first channel and a second channel, the first channel extends from the positioning wheel to the rotating disc, the second channel extends in a first direction and a second direction, the first direction is parallel to the axial direction of the rotating disc, the second direction is a circular arc, the center of the circular arc coincides with the center of the rotating disc, the outer surface of the rotating disc is provided with an arc-shaped limiting groove, the first channel, the limiting groove and the second channel are sequentially provided for the cable.

7. The basket lifting device of claim 1, wherein, The weight limiting device further comprises a floating frame and a second elastic member, the number of the pressing wheels is two, both of the pressing wheels are rotationally connected to the floating frame, and the second elastic member is used to force the floating frame to move towards the rotating disc, so that both of the pressing wheels press the cable on the outer surface of the rotating disc.

8. The basket lifting device of claim 7, wherein, The weight limiting device further comprises a swing arm and an adjusting group, the connecting end of the swing arm is hinged to the shell, the floating frame is rotationally connected to the middle segment of the swing arm, and the adjusting group is used to adjust the tension of the second elastic member, so as to adjust the pressing force of both of the pressing wheels on the cable.

9. The basket lifting device of claim 8, wherein, The adjusting group comprises a pull rod and an adjusting member threadedly connected to one end of the pull rod, the other end of the pull rod is hinged to the swing end of the swing arm, and both ends of the second elastic member are respectively abutted against the shell and the adjusting member.

10. The basket lifting device of claim 1, wherein, The shell is provided with an upper guide pipe and a lower guide pipe, the upper guide pipe and the lower guide pipe are distributed in an up-down manner, the line between the upper guide pipe and the lower guide pipe intersects with the line between the positioning wheel and the rotating disc, the upper guide pipe is used to pass the cable, so as to guide the cable to the positioning wheel, and the lower guide pipe is used to pass the cable after the cable passes around the rotating disc.

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