A multi-cylinder synchronous lifting platform

Abstract

The present invention relates to the technical field of lifting devices, and discloses a multi-cylinder synchronous lifting platform, comprising: a mobile base, a lifting mechanism, a bearing platform and a protective fence mechanism; the lifting mechanism is installed on the mobile base, and its top is hinged to the bottom of the bearing platform; the protective fence mechanism is arranged on the bearing platform, and the protective fence mechanism includes a fixed fence component and a movable fence component, and the fixed fence is fixedly installed on the top of the bearing platform. The adjustable movable fence component provided by the present invention can, according to actual working requirements, in a narrow space, by controlling the extension plate to move slightly on the bearing platform, enable the extension plate to quickly reach the required position, and the extended extension plate can be used by workers for operation activities, so as to realize the function of expanding the activity space of the bearing platform, and further solve the problem that the bearing platform of the existing lifting platform is difficult to adjust the adaptive position in a narrow space.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting devices, and more specifically, it relates to a multi-cylinder synchronous lifting platform. Background Art

[0002] A hydraulic lifting platform is a mechanical device that realizes the lifting function of the platform through the drive of a hydraulic system. It mainly consists of a platform structure, a hydraulic power unit, a control system, a support device, etc. The oil pump in the hydraulic power unit pressurizes the hydraulic oil and transports it to the hydraulic cylinder, causing the piston rod of the hydraulic cylinder to extend or retract, thereby driving the platform to rise or fall. Its control system can accurately control the lifting height and speed of the platform, with simple operation and reliable safety. The hydraulic lifting platform has the advantages of large load-bearing capacity, stable lifting, wide working range, etc., and is widely used in multiple fields such as industrial production, logistics warehousing, construction, and aerial work, providing an efficient and convenient vertical transportation solution for cargo transportation, equipment installation, personnel climbing operations, etc.

[0003] Currently, most of the lifting platforms used in the logistics warehousing industry are scissor-type hydraulic lifting platforms. For example, the publication number CN111017832A discloses a hydraulic lifting platform, including: a moving base, a fixed base, and a working platform. Rotating rollers are symmetrically and rotatably connected to both sides of the bottom of the moving base, and support side frames are vertically connected to the four corner positions of the moving base. However, in this type of hydraulic lifting platform, the set working platform is in the form of an integral plate. When the activity range of the working platform is difficult to meet the current operation activity requirements of the staff, generally, the position of the entire lifting platform needs to be further adjusted. However, when the required moving direction is perpendicular to the preset moving direction of the lifting platform, the position adjustment action amplitude of the lifting platform is relatively large, and the required activity space is relatively large. Especially when used in the aisles between relatively narrow large shelves, the existing lifting platform is extremely vulnerable to the obstruction of the shelves and goods on both sides, making it difficult to adjust the position of the working platform in the lifting platform. Therefore, there is an urgent need for a lifting platform that can adapt to narrow spaces and can quickly and flexibly adjust the position of the working platform. Summary of the Invention

[0004] The purpose of the present invention is to provide a multi-cylinder synchronous lifting platform to solve the above-mentioned technical problems.

[0005] The present invention solves the above-mentioned existing technical problems through the following technical solutions:

[0006] The present invention provides a multi-cylinder synchronous lifting platform, including: a moving base, a lifting mechanism, a bearing platform, and a protective fence mechanism;

[0007] The lifting mechanism is installed on the moving base, and its top is hinged to the bottom of the bearing platform;

[0008] The protective fence mechanism includes a fixed fence component and a movable fence component. The fixed fence component is fixedly installed on the top of the bearing platform, and the movable fence component is arranged on one side of the fixed fence component.

[0009] The movable fence component includes a support sliding seat, an extension plate, a rope pulling member, a rope winding member, an extension driving member, a locking member, two rope positioning members, and a plurality of protective ropes. The support sliding seat is slidably installed in the bearing platform, the extension plate is slidably installed on the top surface of the support sliding seat, the rope pulling member is arranged on one side of the bearing platform, the bottom of the rope pulling member is fixedly connected to one end of the extension plate, the rope winding member is rotatably installed at one end of the top surface of the bearing platform, the two rope positioning members are symmetrically arranged on both sides of the rope pulling member, and one end of the support sliding seat is fixedly connected to the bottom of the rope positioning member. A plurality of the protective ropes are wound around the rope winding member at equal intervals from top to bottom. The rope pulling member is slidably sleeved on the outer sides of the plurality of protective ropes respectively, and the two rope positioning members are respectively in sliding connection with the outer sides of the plurality of protective ropes in cooperation. The locking member is used to lock the position of the support sliding seat. The ends of the plurality of protective ropes are fixedly connected to one side of the fixed fence component. The extension driving member is respectively in transmission connection with the rope winding member and the extension plate. By driving the extension plate to slide and extend to the outside of the bearing platform through the extension driving member, the rope winding member is synchronously driven to adaptively lengthen the protective ropes.

[0010] As a further optimized solution of the present invention, the rope pulling member includes two pulling bodies. The two pulling bodies are symmetrically distributed at one end of the extension plate. The pulling body includes a fixing plate and a pulley group having the same number as the protective ropes. The bottom of the fixing plate is fixedly connected to the end of the extension plate. A plurality of the pulley groups are linearly and equally spaced on one side of the fixing plate. The pulley group includes two staggered limiting pulleys. The two sides of the protective rope are respectively in rolling contact with the corresponding two limiting pulleys in cooperation.

[0011] As a further optimized solution of the present invention, the rope positioning member includes a positioning plate and a positioning pulley having the same number as the protective ropes. The bottom of the positioning plate is fixedly connected to one end of the support sliding seat. A plurality of the positioning pulleys are linearly and equally spaced and fixedly installed on one side of the positioning plate. The side of the protective rope facing the side of the bearing platform is in rolling contact with the corresponding positioning pulley in cooperation.

[0012] As a further optimized solution of the present invention, the rope winding member includes a rotating rod and a winding roller having the same number as the protective ropes. The rotating rod is rotatably installed on the top of the bearing platform. A plurality of the winding rollers are linearly and evenly fixedly sleeved on the outside of the rotating rod. A plurality of the protective ropes are correspondingly wound around a plurality of the winding rollers.

[0013] As a further optimized solution of the present invention, the stretching driving member includes a linear driving part, an elastic transmission belt, and three transmission belt pulleys. The three transmission belt pulleys are distributed in an isosceles triangle in the bearing platform. The transmission belt pulley located in the middle is in transmission connection with the linear driving part in a matching manner. The linear driving part is in transmission connection with the stretching plate in a matching manner. The linear driving part drives the stretching plate to linearly slide along the support slide to extend outside the bearing platform. The two transmission belt pulleys located on the sides are both rotatably connected to the inside of the bearing platform. The bottom end of the rotating rod is fixedly connected to the corresponding side transmission belt pulley. The three transmission belt pulleys are in transmission connection with each other through the transmission belt.

[0014] As a further optimized solution of the present invention, the linear driving part includes a driving motor, a transmission lead screw, and two bevel gears. The driving motor is installed at the bottom of the support slide. The transmission lead screw is rotatably installed in the middle of the top surface of the support slide. The bottom of the stretching plate is threadedly connected to the outside of the transmission lead screw. The two bevel gears are respectively fixedly connected to the end of the transmission lead screw and the driving end of the driving motor in a corresponding manner, and the two bevel gears are meshed with each other.

[0015] As a further optimized solution of the present invention, the locking member is a manual locking structure. The locking structure includes a connecting plate and a locking rotating rod. The connecting plate is slidably arranged on one side of the bearing platform. The two ends of the bottom of the connecting plate are respectively fixedly connected to one side of the two positioning plates. The locking rotating rod is rotatably installed on one side of one of the positioning plates. The bottom end of the locking rotating rod threadedly penetrates downward through the connecting plate and then contacts the top surface of the bearing platform.

[0016] As a further optimized solution of the present invention, the locking member is an automatic locking structure. The automatic locking structure includes a connecting plate, a rotating motor, and a driving lead screw. A chute is provided on the top surface of the bearing platform. The connecting plate is slidably installed on one side of the bearing platform close to the chute. One side of the connecting plate is in sliding connection with the chute in a matching manner. The rotating motor is fixedly installed in the slide. The driving lead screw is rotatably installed in the chute. The outside of the driving lead screw is threadedly connected to one side of the connecting plate.

[0017] As a further optimized solution of the present invention, the fixed fence assembly includes a long side fence and two short side fences. The long side fence and the short side fences are correspondingly distributed on the long side and the two short sides of the bearing platform. A protective door is provided in the middle of the long side fence.

[0018] As a further optimized solution of the present invention, the number of the protective ropes is three, and the protective ropes are steel wires.

[0019] The beneficial effects of the present invention are as follows:

[0020] The adjustable movable fence assembly provided by the present invention can, according to actual working requirements, in a narrow space, by controlling the small-scale movement of the extension plate on the bearing platform, enable the extension plate to quickly reach the required position. The extended extension plate can be used by the staff for operation activities, so as to realize the function of expanding the movable space of the bearing platform, and thus solve the problem that the bearing platform of the existing lifting platform is difficult to adjust the position adaptively in a narrow space;

[0021] In addition, when driving the extension plate to move and unfold, by synchronously driving the protective rope to perform adaptive movement, the protective rope forms a fence structure adapted to the extension plate, which can provide safety protection for the staff. There is no need for manual active adjustment of the protective fence, which not only ensures the personal safety of the staff but also provides convenience for the staff to use. Brief Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of a multi-cylinder synchronous lifting platform provided by the present invention;

[0023] Figure 2 is a schematic structural diagram of the bearing platform and the protective fence mechanism in a multi-cylinder synchronous lifting platform provided by the present invention;

[0024] Figure 3 is a schematic structural diagram of the interior of the bearing platform in a multi-cylinder synchronous lifting platform provided by the present invention;

[0025] Figure 4 is a schematic structural diagram of the movable fence assembly in a multi-cylinder synchronous lifting platform provided by the present invention;

[0026] Figure 5 is the present invention Figure 4 a partial enlarged schematic diagram at A in;

[0027] Figure 6 is a schematic structural diagram of the rope pulling member, the rope positioning member, the rope winding member and the protective rope in a multi-cylinder synchronous lifting platform provided by the present invention;

[0028] Figure 7 is a schematic structural diagram of the linear driving member, the supporting sliding seat and the extension plate in a multi-cylinder synchronous lifting platform provided by the present invention;

[0029] Figure 8 is the present invention Figure 7 a partial enlarged schematic diagram at B in;

[0030] Figure 9 is a schematic structural diagram of the first embodiment of the locking member in a multi-cylinder synchronous lifting platform provided by the present invention;

[0031] Figure 10This is a schematic structural diagram of the second embodiment of the locking member in a multi-cylinder synchronous lifting platform provided by the present invention.

[0032] In the figure: 1, moving base; 2, lifting mechanism; 3, bearing platform; 4, protective fence mechanism; 41, fixed fence assembly; 411, long side fence; 412, short side fence; 42, movable fence assembly; 421, support sliding seat; 422, extension plate; 423, protective rope; 424, fixing plate; 425, pulley block; 426, positioning plate; 427, positioning pulley; 428, rotating rod; 429, winding roller; 4210, transmission belt; 4211, transmission belt pulley; 4212, driving motor; 4213, transmission lead screw; 4214, bevel gear; 4215, connecting plate; 4216, locking rotating rod; 4217, rotating motor; 4218, driving lead screw; 4219, chute. Detailed implementation mode

[0033] Now, the subject matter described herein will be discussed with reference to exemplary embodiments. It should be understood that discussing these embodiments is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. Without departing from the scope of protection of the content of this specification, changes can be made to the functions and arrangements of the elements discussed. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described relative to some examples can also be combined in other examples.

[0034] Embodiment 1

[0035] Please refer to Figures 1 to 3 , a multi-cylinder synchronous lifting platform, comprising: a moving base 1, a lifting mechanism 2, a bearing platform 3, and a protective fence mechanism 4. Among them, a roller moving unit is provided on the moving base 1, which can realize the free movement of the entire lifting platform. Since it belongs to the prior art, its specific structure and principle will not be described in detail herein. The lifting mechanism 2 is installed on the moving base 1, and its top is hinged to the bottom of the bearing platform 3. The bearing platform 3 is driven by the lifting mechanism 2 to perform lifting actions. The lifting mechanism 2 is a scissor-type lifting structure driven by multiple existing hydraulic cylinders, which is a conventional choice in the art and will not be described in detail herein regarding its specific structure and principle. The protective fence mechanism 4 is arranged on the bearing platform 3, and the protective fence mechanism 4 is used for safety protection of the sides of the bearing platform 3. Among them, the protective fence mechanism 4 includes a fixed fence assembly 41 and a movable fence assembly 42. The fixed fence is fixedly installed on the top of the bearing platform 3, and the movable fence assembly 42 is arranged on one side of the fixed fence assembly 41, and the movable fence assembly 42 and the fixed fence assembly 41 are assembled to form a closed rectangular fence to enclose the sides of the top surface of the bearing platform 3.

[0036] Please refer to Figures 3 to 5, wherein the movable fence assembly 42 includes a support sliding seat 421, an extension plate 422, a rope pulling member, a rope winding member, an extension driving member, a locking member, two rope positioning members, and three protective ropes 423. The support sliding seat 421 is slidably installed in the carrying platform 3, and the extension plate 422 is slidably installed on the top surface of the support sliding seat 421. Both the support sliding seat 421 and the extension plate 422 are made of steel plates and can bear the weight of 2-3 adults. The rope pulling member is arranged on one side of the carrying platform 3, and the bottom of the rope pulling member is fixedly connected to one end of the extension plate 422. The rope winding member is rotatably installed at one end of the top surface of the carrying platform 3. The two rope positioning members are symmetrically arranged on both sides of the rope pulling member, and one end of the support sliding seat 421 is fixedly connected to the bottom of the rope positioning member. The three protective ropes 423 are equidistantly wound around the rope winding member from top to bottom. The rope pulling member is slidably sleeved on the outer sides of the three protective ropes 423 respectively, and the two rope positioning members are respectively slidably connected with the outer sides of the three protective ropes 423 in a matching manner. The locking member is used to lock the position of the support sliding seat 421. The ends of the three protective ropes 423 are fixedly connected to one side of the fixed fence assembly 41. The extension driving member is respectively in transmission connection with the rope winding member and the extension plate 422. By driving the extension plate 422 to slide and extend to the outside of the carrying platform 3 through the extension driving member, the rope winding member is synchronously driven to adaptively lengthen the protective ropes 423.

[0037] It should be noted that when the activity area on the top surface of the bearing platform 3 is difficult to meet the activity requirements of the staff, it is necessary to further expand the activity area on the top surface of the bearing platform 3. At this time, the movable fence assembly 42 can be adjusted. First, according to the position where the activity is required, the support sliding seat 421 and the extension plate 422 are adjusted left and right. First, by operating the locking member, the locking effect on the support sliding seat 421 is released, and then the rope pulling member is pushed manually along the length direction of the bearing platform 3. The extension plate 422 will move horizontally together with the rope pulling member, and the support sliding seat 421 and the rope positioning member will move together with the extension plate 422. Since both the rope pulling member and the rope positioning member cooperate with the protective rope 423 to slide, they will not be hindered by the protective rope 423. After the support sliding seat 421 moves to the required position, stop pushing the rope pulling member, and then operate the locking member to lock the support sliding seat 421 again. After that, driven by the extension driving member, the extension plate 422 can be driven to move horizontally along the top surface of the support sliding seat 421 and extend to the outside of the bearing platform 3. The rope pulling member will move together with the extension plate 422 and pull the protective rope 423 to move. At the same time, the winding member is synchronously driven by the extension driving member to start lengthening the protective rope 423 to adapt to the horizontal movement of the rope pulling member. Since the protective rope 423 on both sides of the rope pulling member is restricted by the rope positioning member, the protective rope 423 forms a U-shaped fence that fits the extension plate 422. Until the extension plate 422 extends to the required length, just turn off the extension driving member. At this time, the extended extension plate 422 can be used as the expanded activity area on the top surface of the bearing platform 3 for the staff to move here. At the same time, the protective rope 423 extending out with the extension plate 422 can provide safety protection for the staff. In this way, the problem that the bearing platform 3 of the existing lifting platform is difficult to adjust the adaptive position in a narrow space is solved, and the use flexibility of the lifting platform is further improved. Compared with the existing lifting platform, it is not easily restricted by the external environmental space and can better adapt to various complex external environments, especially narrow shelf aisles. In addition, when driving the extension plate 422 to move and expand, by simultaneously driving the protective rope 423 to perform adaptive movement, the protective rope 423 forms a fence structure that fits the extension plate 422, which can provide safety protection for the staff without the need for manual active adjustment of the protective fence, ensuring the personal safety of the staff and providing convenience for the staff to use.

[0038] Please refer to Figure 3 、 Figure 4 and Figure 6, the rope pulling member includes two pulling bodies which are symmetrically distributed at one end of the extension plate 422. The pulling body includes a fixing plate 424 and a pulley set 425 having the same number as the protective ropes 423. The bottom of the fixing plate 424 is fixedly connected to the end of the extension plate 422. Three pulley sets 425 are linearly and equidistantly installed on one side of the fixing plate 424. The pulley set 425 includes two limiting pulleys arranged staggeredly. Both sides of the protective rope 423 are in rolling contact with the corresponding two limiting pulleys. The rope positioning member includes a positioning plate 426 and a positioning pulley 427 having the same number as the protective ropes 423. The bottom of the positioning plate 426 is fixedly connected to one end of the support sliding seat 421. Three positioning pulleys 427 are linearly and equidistantly fixedly installed on one side of the positioning plate 426. The side of the protective rope 423 facing the side of the bearing platform 3 is in rolling contact with the corresponding positioning pulley 427. The rope winding member includes a rotating rod 428 and a winding roller 429 having the same number as the protective ropes 423. The rotating rod 428 is rotatably installed on the top of the bearing platform 3. Three winding rollers 429 are linearly and evenly fixedly sleeved on the outside of the rotating rod 428. Three protective ropes 423 are correspondingly wound around the three winding rollers 429.

[0039] It should be noted that when the above-mentioned movable fence assembly 42 is in use, it slides and extends on one side of the bearing platform 3 through the extension plate 422, which can drive the two fixing plates 424 to move together. At this time, since the protective rope 423 is clamped by two staggeredly arranged limiting pulleys, it can move together with the fixing plate 424, so that the protective rope 423 is gradually stretched. The protective rope 423 slides in cooperation with the limiting pulley, which can reduce the resistance generated by the protective rope 423 during pulling, so as to ensure that the rope pulling member can easily pull the protective rope 423 to move. During the process of pulling the protective rope 423, the position where it slides with the positioning pulley 427 is restricted by the positioning pulley 427, so that the protective rope 423 can be stretched and unfolded in a U-shaped form. At the same time, under the driving action of the extension driving member, the rotating rod 428 can be driven to rotate synchronously, and the three winding rollers 429 are driven by the rotating rod 428 to gradually lengthen the protective rope 423, so that the protective rope 423 can be smoothly pulled by the rope pulling member. In this way, when the extension plate 422 is extended outwards, the adaptive adjustment of the protective rope 423 is synchronously realized, and the protective rope 423 automatically forms a protective fence structure adapted to the extension plate 422, thereby providing safety protection for the staff standing on the extension plate 422.

[0040] Please refer to Figure 4 , Figure 7 and Figure 8, the stretching driving member includes a linear driving part, an elastic transmission belt 4210, and three transmission belt pulleys 4211. The three transmission belt pulleys 4211 are distributed in an isosceles triangle within the bearing platform 3. The transmission belt pulley 4211 at the middle position is in transmission connection with the linear driving part, and the linear driving part is in transmission connection with the stretching plate 422. The stretching plate 422 is driven by the linear driving part to linearly slide along the support slide 421 and extend to the outside of the bearing platform 3. The two transmission belt pulleys 4211 at the side are both rotatably connected to the inside of the bearing platform 3, and the bottom end of the rotating rod 428 is fixedly connected to the corresponding side transmission belt pulley 4211. The three transmission belt pulleys 4211 are in transmission connection through the transmission belt 4210. The linear driving part includes a driving motor 4212, a transmission lead screw 4213, and two bevel gears 4214. The driving motor 4212 is installed at the bottom of the support slide 421. The transmission lead screw 4213 is rotatably installed in the middle of the top surface of the support slide 421. The bottom of the stretching plate 422 is threadedly connected to the outside of the transmission lead screw 4213. The two bevel gears 4214 are respectively fixedly connected to the end of the transmission lead screw 4213 and the driving end of the driving motor 4212, and the two bevel gears 4214 are meshed with each other.

[0041] It should be noted that when the above stretching driving member is in use, when manually pushing the support slide 421, the transmission belt pulley 4211 installed on the support slide 421 moves together with the support slide 421. Since the transmission belt 4210 has a certain elasticity, when the transmission belt pulley 4211 moves, the elastic expansion and contraction of the transmission belt 4210 is used to adapt to the position movement change of the transmission belt pulley 4211 until the support slide 421 reaches the required position. At this time, the three belt pulleys are always in transmission connection with the transmission belt 4210. After that, when driving the stretching plate 422 to extend outward, by rotating the driving motor 4212, the two bevel gears 4214 can be rotated synchronously, thereby driving the transmission lead screw 4213 to rotate. Under the driving action of the transmission lead screw 4213, the stretching plate 422 can translate along the top surface of the support slide 421. At the same time, the three transmission belt pulleys 4211 start to rotate synchronously under the transmission action of the transmission belt 4210, and then the rotating rod 428 rotates following the transmission belt pulley 4211 connected to it, so that the winding roller 429 synchronously pays out the protective rope 423. After the stretching plate 422 extends to the required length, the driving motor 4212 stops driving, the stretching plate 422 stops extending outward, and remains stationary under the locking action of the transmission lead screw 4213. In this way, the synchronous driving function of the stretching plate 422 extending outward and the protective rope 423 being paid out is realized, so that the stretching plate 422 and the protective rope 423 can adapt to the linkage cooperation action.

[0042] Please refer to Figure 9, the locking member is a manual locking structure. The locking structure includes a connecting plate 4215 and a locking rotating rod 4216. The connecting plate 4215 is slidably arranged on one side of the bearing platform 3. The two ends of the bottom of the connecting plate 4215 are respectively fixedly connected to one side of two positioning plates 426. The locking rotating rod 4216 is rotatably installed on one side of one of the positioning plates 426. The bottom end of the locking rotating rod 4216 threadedly penetrates downward through the connecting plate 4215 and then contacts the top surface of the bearing platform 3.

[0043] It should be noted that when the above-mentioned locking member is in use, by rotating the top end of the locking rotating rod 4216 to move it upward relative to the connecting plate 4215, the bottom end of the locking rotating rod 4216 is separated from the top surface of the bearing platform 3, thereby releasing the locking effect on the connecting plate 4215, so that the support sliding seat 421 can move. This manual locking structure is light and simple, the operation method is convenient, and the use cost is low, which is suitable for use scenarios with low requirements for automation.

[0044] Please refer to Figure 2 , the fixed fence assembly 41 includes a long side fence 411 and two short side fences 412. The long side fence 411 and the short side fences 412 are correspondingly distributed on the long side and the two short sides of the bearing platform 3. A protective door is provided in the middle of the long side fence 411. Both the long side fence 411 and the short side fences 412 are welded by steel pipes, and the protective door can be rotated and opened.

[0045] Embodiment 2

[0046] In addition, please refer to Figure 10 , the present invention also provides another implementation manner of the locking member. The difference from the locking member in Embodiment 1 is mainly that: the locking member is an automatic locking structure. The automatic locking structure includes a connecting plate 4215, a rotating motor 4217 and a driving lead screw 4218. A chute 4219 is provided on the top surface of the bearing platform 3. The connecting plate 4215 is slidably installed on one side of the bearing platform 3 close to the chute 4219. One side of the connecting plate 4215 is slidably connected with the chute 4219 in cooperation. The rotating motor 4217 is fixedly installed in the sliding seat. The driving lead screw 4218 is rotatably installed in the chute 4219, and the outside of the driving lead screw 4218 is threadedly connected with one side of the connecting plate 4215.

[0047] It should be noted that when the above automatic locking structure is in use, by rotating the motor 4217, the lead screw 4218 can be driven to rotate. Under the rotation of the lead screw 4218, the connecting plate 4215 starts to linearly slide along the chute 4219, and the support slide base 421 moves together with the connecting plate 4215. When the connecting plate 4215 reaches the required position, the rotation of the motor 4217 stops, and the connecting plate 4215 no longer moves. Under the locking effect of the thread of the lead screw 4218, the connecting plate 4215 is kept stationary and locked. In this way, the automatic position adjustment function of the support slide base 421 is realized. Compared with the manual locking structure in the first embodiment, it is more convenient to use, does not require manual adjustment, and is suitable for scenarios with high automation requirements.

[0048] The embodiments of the above specific implementation manners have been described, but this embodiment is not limited to the above specific implementation manners. The above specific implementation manners are only illustrative and not restrictive. Under the inspiration of this embodiment, those of ordinary skill in the art can also make many forms, all of which fall within the protection scope of this embodiment.

Claims

1. A multi-cylinder synchronous lifting platform, characterized in that: include: A mobile base (1), a lifting mechanism (2), a carrying platform (3) and a protective fence mechanism (4); The lifting mechanism (2) is installed on the mobile base (1), and its top is hinged to the bottom of the carrying platform (3); The protective fence mechanism (4) comprises a fixed fence component (41) and a movable fence component (42), wherein the fixed fence component (41) is fixedly mounted on the top of the carrying platform (3), and the movable fence component (42) is arranged on one side of the fixed fence component (41); The movable fence assembly (42) comprises a supporting slide (421), an extension plate (422), a rope pulling member, a rope winding member, an extension driving member, a locking member, two rope positioning members and a plurality of protective ropes (423), wherein the supporting slide (421) is slidably mounted in the bearing platform (3), the extension plate (422) is slidably mounted on the top surface of the supporting slide (421), the rope pulling member is arranged on one side of the bearing platform (3), the bottom of the rope pulling member is fixedly connected to one end of the extension plate (422), the rope winding member is rotatably mounted on one end of the top surface of the bearing platform (3), the two rope positioning members are symmetrically arranged on both sides of the rope pulling member, and one end of the supporting slide (421) is fixedly connected to the bottom of the rope positioning member. The plurality of protective ropes (423) are connected to the rope winding member at equal intervals from top to bottom, the rope pulling member is respectively slidably sleeved with the outer sides of the plurality of protective ropes (423), the two rope positioning members are respectively slidably connected with the outer sides of the plurality of protective ropes (423), the locking member is used to lock the position of the support slide (421), the ends of the plurality of protective ropes (423) are all fixedly connected to one side of the fixed fence assembly (41), the extension driving member is respectively connected to the rope winding member and the extension plate (422) in a transmission manner, the extension driving member drives the extension plate (422) to slide and extend to the outer side of the bearing platform (3), and simultaneously drives the rope winding member to adaptively lengthen the protective ropes (423); The extension drive member comprises a linear drive unit, an elastic transmission belt (4210) and three transmission pulleys (4211); the three transmission pulleys (4211) are distributed in the form of an isosceles triangle inside the bearing platform (3); the transmission pulley (4211) located in the middle is in transmission connection with the linear drive unit; the linear drive unit is in transmission connection with the extension plate (422); the extension plate (422) is driven by the linear drive unit to slide linearly along the support slide (421) to extend to the outside of the bearing platform (3); the two transmission pulleys (4211) located on the sides are both rotationally connected to the inside of the bearing platform (3); the three transmission pulleys (4211) are in transmission connection with the transmission belt (4210); The linear drive unit comprises a drive motor (4212), a transmission screw (4213) and two bevel gears (4214); the drive motor (4212) is mounted on the bottom of the support slide (421); the transmission screw (4213) is rotatably mounted on the middle of the top surface of the support slide (421); the bottom of the extension plate (422) is threadedly connected to the outer side of the transmission screw (4213); the two bevel gears (4214) are respectively fixedly connected to the end of the transmission screw (4213) and the driving end of the drive motor (4212), and the two bevel gears (4214) are meshed with each other.

2. A multi-cylinder synchronous lifting platform according to claim 1, characterized in that: The rope pulling member comprises two pulling bodies, the two pulling bodies are symmetrically distributed at one end of the extension plate (422), the pulling body comprises a fixed plate (424) and a pulley block (425) having the same number as the protective ropes (423), the bottom of the fixed plate (424) is fixedly connected to the end of the extension plate (422), a plurality of the pulley blocks (425) are linearly equidistantly installed on one side of the fixed plate (424), the pulley block (425) comprises two staggered limit pulleys, and the two sides of the protective rope (423) are respectively in rolling contact with the corresponding two limit pulleys.

3. A multi-cylinder synchronous lifting platform according to claim 2, characterized in that: The rope positioning member comprises a positioning plate (426) and positioning pulleys (427) having the same number as the protective ropes (423); the bottom of the positioning plate (426) is fixedly connected to one end of the supporting slide (421); a plurality of the positioning pulleys (427) are linearly equidistantly fixedly mounted on one side of the positioning plate (426); and the side of the protective rope (423) facing the side of the bearing platform (3) is in rolling contact with the corresponding positioning pulley (427).

4. The multi-cylinder synchronous lifting platform according to claim 3, characterized in that: The rope winding component comprises a rotating rod (428) and winding rollers (429) having the same number as the protective ropes (423); the rotating rod (428) is rotatably mounted on the top of the supporting platform (3); a plurality of winding rollers (429) are linearly and evenly fixedly sleeved on the outer side of the rotating rod (428); a plurality of protective ropes (423) are correspondingly wound around the plurality of winding rollers (429); and the bottom end of the rotating rod (428) is fixedly connected to the transmission pulley (4211) on the corresponding side.

5. The multi-cylinder synchronous lifting platform according to claim 1, characterized in that: The locking member is a manual locking structure, and the locking structure comprises a connecting plate (4215) and a locking rotating rod (4216). The connecting plate (4215) is slidably arranged on one side of the bearing platform (3), and the two ends of the bottom of the connecting plate (4215) are respectively fixedly connected to one side of two positioning plates (426). The locking rotating rod (4216) is rotatably installed on one side of one of the positioning plates (426). The bottom end of the locking rotating rod (4216) is threaded downward through the connecting plate (4215) and contacts the top surface of the bearing platform (3).

6. The multi-cylinder synchronous lifting platform according to claim 1, characterized in that: The locking member is an automatic locking structure, which includes a connecting plate (4215), a rotating motor (4217) and a driving screw (4218); a slide groove (4219) is provided on the top surface of the bearing platform (3); the connecting plate (4215) is slidably mounted on a side of the bearing platform (3) close to the slide groove (4219); one side of the connecting plate (4215) is slidably connected to the slide groove (4219); the rotating motor (4217) is fixedly mounted in the supporting slide seat (421); the driving screw (4218) is rotatably mounted in the slide groove (4219); and the outer side of the driving screw (4218) is threadedly connected to one side of the connecting plate (4215).

7. The multi-cylinder synchronous lifting platform according to claim 1, characterized in that: The fixed fence assembly (41) comprises a long side fence (411) and two short side fences (412), wherein the long side fence (411) and the short side fence (412) are correspondingly distributed on the long side and two short sides of the carrying platform (3), and a protective door is provided in the middle of the long side fence (411).

8. The multi-cylinder synchronous lifting platform according to claim 1, characterized in that: The number of the protective ropes (423) is three, and the protective ropes (423) are steel wire ropes.

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