Multi-cylinder synchronous lifting platform

Abstract

The invention relates to the technical field of lifting devices, and discloses a multi-cylinder synchronous lifting platform which comprises a movable base, a lifting mechanism, a bearing platform and a protective fence mechanism. The lifting mechanism is mounted on the movable base, and the top of the lifting mechanism is hinged to the bottom of the bearing platform; the protective fence mechanism is arranged on the bearing platform and comprises a fixed fence assembly and a movable fence assembly, and the fixed fence assembly is fixedly installed on the top of the bearing platform. According to the adjustable movable fence assembly, the stretching plate can quickly reach the needed position by controlling the stretching plate to move on the bearing platform in a small range in a narrow space according to actual working requirements, the stretching plate extending out can be used for working activities of workers, and the working efficiency is improved. The function of expanding the moving space of the bearing platform is achieved, and then the problem that adaptive position adjustment of a bearing platform of an existing lifting platform is difficult to conduct in a narrow space is solved.

Description

Technical Field

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

[0002] The hydraulic lifting platform is a mechanical device that realizes the lifting function of the platform through the hydraulic system drive. It is mainly composed of platform structure, hydraulic power unit, control system and support device. The oil pump in the hydraulic power unit pressurizes the hydraulic oil and delivers it to the hydraulic cylinder, so that the piston rod of the hydraulic cylinder extends or retracts, thereby driving the platform to rise or fall. Its control system can accurately control the lifting height and speed of the platform. It is easy to operate and safe and reliable. The hydraulic lifting platform has the advantages of large carrying capacity, stable lifting and lowering, and a wide working range. It is widely used in industrial production, logistics warehousing, construction, aerial operations and other fields, providing efficient and convenient vertical transportation solutions for cargo transportation, equipment installation, personnel climbing operations, etc.

[0003] At present, most of the lifting platforms used in the logistics and warehousing industry are scissor-type hydraulic lifting platforms, such as the publication number CN111017832A, which discloses a hydraulic lifting platform, including: a mobile base, a fixed base and a working platform, the bottom of the mobile base is symmetrically connected to rotating rollers on both sides, and the four corners of the mobile base are vertically connected to support side frames. However, in this type of hydraulic lifting platform, the workbench is in the form of an integrated plate. When the range of movement of the workbench is difficult to meet the current work activity needs of the staff, it is generally necessary to further adjust the position of the entire lifting platform. 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 large, and the required activity space is large. Especially when used between the aisles of relatively narrow large shelves, the existing lifting platform is easily obstructed by the shelves and goods on both sides, making it difficult for the workbench in the lifting platform to adapt to the position adjustment. 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 workbench. 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 technical problems through the following technical solutions:

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

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

[0008] The protective fence mechanism includes a fixed fence assembly and a movable fence assembly, wherein the fixed fence assembly is fixedly mounted on the top of the carrying platform, and the movable fence assembly is arranged on one side of the fixed fence assembly;

[0009] The movable fence assembly includes a supporting slide, 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 supporting slide is slidably installed in the load-bearing platform, the extension plate is slidably installed on the top surface of the supporting slide, the rope pulling member is arranged on one side of the load-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 load-bearing platform, the two rope positioning members are symmetrically arranged on both sides of the rope pulling member, and one end of the supporting slide is fixedly connected to the bottom of the rope positioning member. The plurality of protective ropes 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 plurality of protective ropes respectively, the two rope positioning members are slidably connected with the outer sides of the plurality of protective ropes respectively, the locking member is used to lock the position of the supporting slide, the ends of the plurality of protective ropes are fixedly connected to one side of the fixed fence assembly, the extension driving member is respectively transmission-connected with the rope winding member and the extension plate, the extension plate is driven by the extension driving member to slide and extend to the outer side of the load-bearing platform, and the rope winding member is simultaneously driven to adaptively lengthen the protective rope.

[0010] As a further optimization scheme of the present invention, the rope pulling member includes two pulling bodies, and the two pulling bodies are symmetrically distributed at one end of the extension plate. The pulling body includes a fixed plate and a pulley group with the same number as the protective ropes. The bottom of the fixed plate is fixedly connected to the end of the extension plate, and several of the pulley groups are linearly equidistantly installed on one side of the fixed plate. The pulley group includes two staggered limit pulleys, and the two sides of the protective rope are respectively in rolling contact with the corresponding two limit pulleys.

[0011] As a further optimization scheme of the present invention, the rope positioning member includes a positioning plate and positioning pulleys having the same number as the protective ropes, the bottom of the positioning plate is fixedly connected to one end of the supporting slide, a plurality of the positioning pulleys are linearly and equidistantly fixedly installed on one side of the positioning plate, and the side of the protective rope facing the side of the supporting platform is in rolling contact with the corresponding positioning pulley.

[0012] As a further optimization scheme of the present invention, the rope winding device includes a rotating rod and winding rollers with the same number as the protective ropes. The rotating rod is rotatably installed on the top of the supporting platform, and several winding rollers are linearly and evenly fixed on the outside of the rotating rod. Several protective ropes are correspondingly wound around the several winding rollers.

[0013] As a further optimization scheme of the present invention, the extension drive component includes a linear drive unit, an elastic transmission belt and three transmission pulleys. The three transmission pulleys are distributed in the form of an isosceles triangle in the carrying platform. The transmission pulley located in the middle position is transmission-connected with the linear drive unit in cooperation with the linear drive unit. The linear drive unit is transmission-connected with the extension plate in cooperation with the extension plate. The extension plate is driven by the linear drive unit to slide linearly along the support slide seat and extend to the outside of the carrying platform. The two transmission pulleys located on the side are both rotationally connected to the inside of the carrying platform, and the bottom end of the rotating rod is fixedly connected to the transmission pulley on the corresponding side. The three transmission pulleys are transmission-connected through transmission belts.

[0014] As a further optimization scheme of the present invention, the linear drive unit includes a driving motor, a transmission screw and two bevel gears. The driving motor is installed at the bottom of the supporting slide, and the transmission screw is rotatably installed in the middle of the top surface of the supporting slide. The bottom of the extension plate is threadedly connected to the outer side of the transmission screw. The two bevel gears are respectively fixedly connected to the end of the transmission screw and the driving end of the driving motor, and the two bevel gears are meshed with each other.

[0015] As a further optimization scheme of the present invention, the locking piece is a manual locking structure, and the locking structure includes a connecting plate and a locking rotating rod. The connecting plate is slidably arranged on one side of the supporting platform, and 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, and the bottom end of the locking rotating rod is threaded downward through the connecting plate and contacts the top surface of the supporting platform.

[0016] As a further optimization scheme of the present invention, the locking piece is an automatic locking structure, which includes a connecting plate, a rotating motor and a driving screw. The top surface of the supporting platform is provided with a slide groove, and the connecting plate is slidably installed on the side of the supporting platform close to the slide groove. One side of the connecting plate is slidably connected with the slide groove, the rotating motor is fixedly installed in the sliding seat, the driving screw is rotatably installed in the slide groove, and the outer side of the driving screw is threadedly connected to one side of the connecting plate.

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

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

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

[0020] The adjustable movable fence assembly provided in the present invention can be controlled to move the extension board slightly on the carrying platform in a narrow space according to actual work needs, so that the extension board can quickly reach the required position, and the extended extension board can be used for workers to carry out work activities, so as to realize the function of expanding the activity space of the carrying platform, thereby solving the problem that the carrying platform of the existing lifting platform is difficult to perform adaptive position adjustment in a narrow space;

[0021] In addition, when the extension board is driven to move and unfold, the protective rope is synchronously driven to perform adaptive movement, so that the protective rope forms a fence structure that matches the extension board, 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. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0024] Figure 3 It is a schematic diagram of the structure inside the load-bearing platform of a multi-cylinder synchronous lifting platform provided by the present invention;

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

[0026] Figure 5 The present invention Figure 4 A local enlarged schematic diagram of the middle A;

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

[0028] Figure 7 It is a structural schematic diagram of a linear drive component, a support slide and an extension plate in a multi-cylinder synchronous lifting platform provided by the present invention;

[0029] Figure 8 The present invention Figure 7 A partial enlarged schematic diagram of point B in the middle;

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

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

[0032] In the figure: 1. mobile 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. supporting slide; 422. extension plate; 423. protective rope; 424. fixed plate; 425. pulley block; 426. positioning plate; 427. positioning pulley; 428. rotating rod; 429. winding roller; 4210. transmission belt; 4211. transmission pulley; 4212. driving motor; 4213. transmission screw; 4214. bevel gear; 4215. connecting plate; 4216. locking rotating rod; 4217. rotating motor; 4218. driving screw; 4219. slideway. DETAILED DESCRIPTION

[0033] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0034] Embodiment 1

[0035] Please refer to Figures 1 to 3 A multi-cylinder synchronous lifting platform comprises: a mobile base 1, a lifting mechanism 2, a load-bearing platform 3 and a protective fence mechanism 4. Among them, a roller moving unit is provided on the mobile 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 are not described in detail here. The lifting mechanism 2 is installed on the mobile base 1, and its top is hinged to the bottom of the load-bearing platform 3. The load-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 hydraulic cylinders, which belongs to the conventional choice in this field, and its specific structure and principle are not described here. The protective fence mechanism 4 is arranged on the load-bearing platform 3, and the protective fence mechanism 4 is used to safely protect the side of the load-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 load-bearing platform 3, and the movable fence assembly 42 is arranged on one side of the fixed fence assembly 41. The movable fence assembly 42 and the fixed fence assembly 41 are assembled to form a closed rectangular fence to surround the side of the top surface of the load-bearing platform 3.

[0036] Please refer to Figures 3 to 5The movable fence assembly 42 includes 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 three protective ropes 423. The supporting slide 421 is slidably installed in the bearing platform 3, and the extension plate 422 is slidably installed on the top surface of the supporting slide 421. The supporting slide 421 and the extension plate 422 are both steel plates and can bear the weight of 2-3 adults. The rope pulling member is arranged on one side of the supporting 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 installed at one end of the top surface of the supporting 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 three protective ropes 423 are equidistantly wound on 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, the two rope positioning members are respectively cooperated and slidably connected with the outer sides of the three protective ropes 423, the locking member is used to lock the position of the supporting slide 421, the ends of the three protective ropes 423 are all fixedly connected to one side of the fixed fence assembly 41, the extension driving member is respectively cooperated and transmittedly connected with the rope winding member and the extension plate 422, and the extension driving member drives the extension plate 422 to slide and extend to the outer side of the supporting platform 3, and simultaneously drives the rope winding member to adaptively lengthen the protective rope 423.

[0037] It should be noted that when the activity area on the top surface of the carrying platform 3 is difficult to meet the activity needs of the staff, it is necessary to further expand the activity area on the top surface of the carrying platform 3. At this time, the movable fence assembly 42 can be adjusted. First, the support slide 421 and the extension plate 422 are adjusted left and right according to the required activity position. First, the locking effect of the support slide 421 is released by operating the locking piece, and then the rope pulling piece is manually pushed along the length direction of the carrying platform 3. The extension plate 422 moves horizontally with the rope pulling piece, and the support slide 421 and the rope positioning piece move with the extension plate 422. Since the rope pulling member and the rope positioning member both slide in cooperation with the protective rope 423 and will not be hindered by the protective rope 423, after the support slide 421 moves to the desired position, the rope pulling member is stopped from being pushed, and then the locking member is operated to lock the support slide 421 again, and then, the extension plate 422 can be driven to translate along the top surface of the support slide 421 to extend to the outside of the carrying platform 3 through the extension driving member, and the rope pulling member moves with the extension plate 422 and pulls 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 The protective ropes 423 are located on both sides of the rope pulling member. Due to the restriction of the rope positioning member, the protective ropes 423 form a U-shaped fence that matches the extension plate 422 until the extension plate 422 is extended to the required length and the extension driving member is closed. At this time, the extended extension plate 422 can be used as an activity area expanded from the top surface of the carrying platform 3 for workers to move around. At the same time, the protective ropes 423 extending from the extension plate 422 can provide safety protection for the workers. In this way, the problem of the existing lifting platform's carrying platform 3 being difficult to move in a narrow space is solved. The problem of adaptive position adjustment in the room is further improved, and the flexibility of the lifting platform is further improved. Compared with the existing lifting platform, it is not easily restricted by the external environment 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 unfold, by simultaneously driving the protective rope 423 to perform adaptive activities, the protective rope 423 forms a fence structure that matches the extension plate 422, 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.

[0038] Please refer to Figure 3 , Figure 4 and Figure 6The rope pulling member includes two pulling bodies, which are symmetrically distributed at one end of the extension plate 422. The pulling body includes a fixed plate 424 and a pulley group 425 with the same number as the protective rope 423. The bottom of the fixed plate 424 is fixedly connected to the end of the extension plate 422. Three pulley groups 425 are linearly and equidistantly installed on one side of the fixed plate 424. The pulley group 425 includes two staggered limit pulleys. Both sides of the protective rope 423 are respectively in rolling contact with the corresponding two limit pulleys. The rope positioning member includes a positioning plate 426 and a positioning pulley 427 with the same number as the protective rope 423. The bottom of the positioning plate 426 is fixedly connected to one end of the support slide 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 device includes a rotating rod 428 and winding rollers 429 with the same number as the protective ropes 423. The rotating rod 428 is rotatably installed on the top of the supporting platform 3. The three winding rollers 429 are linearly and evenly fixed on the outer side of the rotating rod 428. The three protective ropes 423 are correspondingly wound on the three winding rollers 429.

[0039] It should be noted that when the movable fence assembly 42 is in use, the extension plate 422 slides and extends on one side of the supporting platform 3, which can drive the two fixed plates 424 to move together. At this time, since the protective rope 423 is clamped by two staggered limiting pulleys, it can move with the fixed plate 424, so that the protective rope 423 is gradually stretched, and the protective rope 423 slides in coordination with the limiting pulley, which can reduce the resistance generated by the protective rope 423 when pulling, so as to ensure that the rope pulling member can easily pull the protective rope 423 to move, and in the process of the protective rope 423 being pulled, the position of the protective rope 423 sliding with the positioning pulley 427 is affected by the positioning Due to the restriction of the pulley 427, the protection rope 423 can be stretched and unfolded in a U-shape. At the same time, under the driving action of the extension drive 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 protection rope 423, so that the protection rope 423 can be smoothly pulled by the rope pulling member. In this way, when the extension plate 422 is expanded outward, the protection rope 423 can be adapted and adjusted synchronously, so that the protection rope 423 automatically forms a protection 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 8The extension drive component includes a linear drive unit, an elastic transmission belt 4210 and three transmission pulleys 4211. The three transmission pulleys 4211 are distributed in the supporting platform 3 in the shape of an isosceles triangle. The transmission pulley 4211 located in the middle position is connected to the linear drive unit for transmission. The linear drive unit is connected to the extension plate 422 for transmission. 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 supporting platform 3. The two transmission pulleys 4211 located on the side are both rotatably connected to the inside of the supporting platform 3, and the bottom end of the rotating rod 428 is fixedly connected to the transmission pulley 4211 on the corresponding side. The three transmission pulleys 4211 are connected to the transmission through the transmission belt 4210. The linear drive unit includes a drive motor 4212, a transmission screw 4213 and two bevel gears 4214. The drive motor 4212 is installed at the bottom of the support slide 421. The transmission screw 4213 is rotatably installed in 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.

[0041] It should be noted that when the extension drive member is in use, when the support slide 421 is manually pushed, the transmission pulley 4211 installed on the support slide 421 moves with the support slide 421. Since the transmission belt 4210 has a certain elasticity, when the transmission pulley 4211 moves, the transmission belt 4210 is elastically extended to adapt to the position movement change of the transmission pulley 4211 until the support slide 421 reaches the required position. At this time, the three pulleys are always connected with the transmission belt 4210 for transmission. Afterwards, when the extension plate 422 is driven to extend outward, the two bevel gears 4214 can be rotated synchronously by driving the motor 4212 to rotate, thereby driving the transmission screw 4213 to rotate, and the extension plate 42 Under the driving action of the transmission screw 4213, the support slide 421 can be translated along the top surface. At the same time, the three transmission pulleys 4211 start to rotate synchronously under the driving action of the transmission belt 4210, so that the rotating rod 428 rotates following the transmission pulley 4211 connected thereto, so that the winding roller 429 synchronously lengthens the protection rope 423. After the extension plate 422 is extended to the required length, the driving motor 4212 stops driving, the extension plate 422 stops extending outwards, and remains in a stationary state under the locking action of the transmission screw 4213. In this way, the extension plate 422 extends outwards and the protection rope 423 is extended synchronously, so that the extension plate 422 and the protection rope 423 can adapt to the linkage and coordinated action.

[0042] Please refer to Fig. 9The locking piece is a manual locking structure, and 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 supporting platform 3, and the two ends of the bottom of the connecting plate 4215 are respectively fixedly connected to one side of the 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 supporting platform 3.

[0043] It should be noted that when the above-mentioned locking member is in use, the top end of the locking rod 4216 is rotated to move it upward relative to the connecting plate 4215, and the bottom end of the locking rod 4216 is separated from the top surface of the supporting platform 3, thereby releasing the locking effect on the connecting plate 4215, so that the supporting slide 421 can move. The manual locking structure is light and simple, easy to operate, and has a low cost of use. It is suitable for use scenarios where automation requirements are not high.

[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 fence 412 are correspondingly distributed on the long side and two short sides of the supporting platform 3. A protective door is provided in the middle of the long side fence 411. The long side fence 411 and the short side fence 412 are both welded from steel pipes, and the protective door can be rotated to open.

[0045] Embodiment 2

[0046] In addition, please refer to Fig.10 The present invention also provides another embodiment of the locking member, which is different from the locking member in Example 1 mainly in that: the locking member is an automatic locking structure, which includes a connecting plate 4215, a rotating motor 4217 and a driving screw rod 4218. A slide groove 4219 is provided on the top surface of the load-bearing platform 3. The connecting plate 4215 is slidably installed on the side of the load-bearing platform 3 close to the slide groove 4219. One side of the connecting plate 4215 is slidably connected with the slide groove 4219. The rotating motor 4217 is fixedly installed in the slide seat, driving the screw rod 4218 to be rotatably installed in the slide groove 4219, and the outer side of the driving screw rod 4218 is threadedly connected with one side of the connecting plate 4215.

[0047] It should be noted that when the above-mentioned automatic locking structure is in use, the motor 4217 is rotated to drive the screw rod 4218 to rotate. Under the rotation of the screw rod 4218, the connecting plate 4215 begins to slide linearly along the slide groove 4219, and the supporting slide 421 moves with the connecting plate 4215. When the connecting plate 4215 reaches the desired position, the motor 4217 stops rotating, and the connecting plate 4215 no longer moves. Under the locking action of the thread of the screw rod 4218, the connecting plate 4215 remains stationary and is locked, thereby realizing the automatic position adjustment function of the supporting slide 421. Compared with the manual locking structure of Example 1, it is more convenient to use and does not require manual adjustment. It is suitable for scenarios with high automation requirements.

[0048] An example of the present specific implementation mode is described above, but the present embodiment is not limited to the above-mentioned specific implementation mode, which is merely illustrative and not restrictive. A person skilled in the art may make many forms inspired by the present embodiment, all of which are protected by the present 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 protective ropes (423) are connected, and a plurality of protective ropes (423) are equidistantly wound around the rope winding member from top to bottom, and the rope pulling member is slidably sleeved on the outer sides of the plurality of protective ropes (423), and the two rope positioning members are slidably connected with the outer sides of the plurality of protective ropes (423), respectively, and the locking member is used to lock the position of the support slide (421), and the ends of the plurality of protective ropes (423) are fixedly connected to one side of the fixed fence assembly (41), and the extension driving member is respectively connected to the rope winding member and the extension plate (422) in a transmission manner, and 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).

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); and a plurality of protective ropes (423) are correspondingly wound around the plurality of winding rollers (429).

5. The multi-cylinder synchronous lifting platform according to claim 4, characterized in that: 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 in the carrying platform (3); the transmission pulley (4211) located in the middle position 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 carrying platform (3); the two transmission pulleys (4211) located on the side are both rotationally connected to the inside of the carrying platform (3); the bottom end of the rotating rod (428) is fixedly connected to the transmission pulley (4211) on the corresponding side; the three transmission pulleys (4211) are transmission connected by the transmission belt (4210).

6. The multi-cylinder synchronous lifting platform according to claim 5, characterized in that: 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.

7. The multi-cylinder synchronous lifting platform according to claim 6, 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).

8. The multi-cylinder synchronous lifting platform according to claim 6, 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 slide seat; 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).

9. 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).

10. 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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