Detachable linkage telescopic platform

Abstract

The application discloses a detachable linkage telescopic platform and relates to the technical field of plate rolling machines. The detachable linkage telescopic platform comprises a processing platform, a linkage platform arranged on the front face of the processing platform, warning assemblies arranged on the inner walls of the two sides below the linkage platform, a No.1 rack arranged above the front face of the processing platform and a turnover mechanism arranged below the No.1 rack. The detachable linkage telescopic platform is made of a proper steel plate, and the turnover mechanism is connected with a rotatable rack on one side. The turnover mechanism is used for driving the movement of the linkage platform. When the turnover mechanism is turned to a certain position, the platform is pushed outwards to avoid the collision between the turnover mechanism and the platform. When the platform is reset, the linkage platform is pulled back to make the linkage platform close to the processing platform. Then, personnel can walk between the linkage platform and the processing platform, and the personnel can observe the plate material on the other side of the plate rolling machine.

Description

Technical Field

[0001] This invention relates to the field of hydraulic plate rolling machine technology, and specifically to a detachable telescopic platform. Background Technology

[0002] CNC hydraulic plate rolling machines are advanced mechanical equipment used to roll metal sheets into specific shapes (such as circles and arcs). They are widely used in many fields such as machinery manufacturing, pressure vessels, petrochemicals, hydropower, and aerospace. Integrating CNC technology, hydraulic transmission technology, and plate rolling processes, they offer higher automation, precision, and production efficiency compared to traditional plate rolling machines.

[0003] When rolling plates on-site, existing CNC hydraulic plate rolling machines require constant up-and-down movement of the platform to the other side of the machine for observation and welding. In addition, the plate rolling machine is too high and the platform is too small, posing certain safety hazards when moving up and down the platform, which seriously affects on-site safety and restricts production efficiency.

[0004] Therefore, it is necessary to invent a detachable, linked telescopic platform to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a detachable, telescopic platform to address the aforementioned shortcomings in the technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a detachable telescopic platform, including a processing platform, a linkage platform is provided on the front exterior of the processing platform, warning components are provided on both inner walls below the linkage platform, a first frame is provided on the front upper part of the processing platform, and a flipping mechanism is provided below the first frame.

[0007] The flipping mechanism includes:

[0008] A hydraulic cylinder is located outside the base below the No. 1 frame. The two sides of the tail end of the hydraulic cylinder are rotatably connected to the external parts below the corresponding base. A connecting seat is provided at the output end of the front end of the hydraulic cylinder. A hollow tube is horizontally fixedly installed on the front side of the connecting seat.

[0009] Two connecting rods are respectively disposed on both sides of the hollow tube, and the tail ends of the two connecting rods are rotatably connected to the two ends of the hollow tube. The front ends of the two connecting rods are fixedly installed with protrusions.

[0010] The warning component includes:

[0011] Two limit switches are respectively installed on the front of the processing platform and located on both sides of the No. 1 frame;

[0012] Two ropes are respectively installed on the inner walls of both sides of the linkage platform, and the front ends of the two ropes are fixedly connected to the inner walls of both sides of the linkage platform.

[0013] As a preferred embodiment of the present invention, the processing platform is provided with bases on both sides of the exterior, the first frame is disposed above one of the bases, the lower end of the first frame is rotatably connected to the upper end of the corresponding base, and a second frame is installed above the other base.

[0014] As a preferred embodiment of the present invention, a working roller assembly is provided between the first frame and the second frame. The working roller assembly is divided into an upper working roller and two lower working rollers. The same end of the upper working roller and the two lower working rollers is separately connected to the first frame.

[0015] As a preferred embodiment of the present invention, the other ends of the two lower working rollers are connected to the lower part of the second frame, and the other end of the upper working roller is connected to the upper part of the second frame. A transmission mechanism is installed on the outside of the second frame, and the upper and lower working rollers are connected to the transmission mechanism at one end of the second frame.

[0016] As a preferred embodiment of the present invention, a crossbar is fixedly installed on the upper part of the first frame by a support member, the upper end of the connecting seat is rotatably sleeved on the crossbar, and the bottom of the connecting seat is fixedly connected to the output end of the hydraulic cylinder by bolts.

[0017] As a preferred embodiment of the present invention, the lower interior of the linkage platform is a hollow structure, and two sets of guide frames are arranged horizontally in the lower interior of the linkage platform, with each set consisting of two guide frames. The guide frames are horizontally provided with through-type structural grooves, and the tail ends of the two guide frames are fixedly connected to the inner wall of the linkage platform. The outer walls on both sides of the two protrusions are slidably connected to the grooves on both sides of a set of guide frames through shafts.

[0018] As a preferred embodiment of the present invention, the front of the processing platform and the upper sides of the machine base are provided with grooves, and locking seats are fixedly installed on the upper sides of the inner walls of the two grooves. The front end of the locking seat is a vertical through hole, and two limit switches are fixedly installed in the two grooves respectively and located below the corresponding locking seats.

[0019] As a preferred embodiment of the present invention, the front end of the rope is provided with a plug rod, the front end of the rope is movably sleeved on the top end of the plug rod, the lower end of the plug rod is connected to the through hole at the front end of the locking seat, and the bottom of the lower end of the plug rod passes through the through hole and abuts against the contact at the top of the limit switch.

[0020] As a preferred embodiment of the present invention, a plurality of evenly distributed barrier curtains are vertically arranged on the rope, the top of the barrier curtains are connected to the rope through rubber sleeves, a plurality of rollers are installed on both sides of the bottom of the linkage platform, and a protective frame is fixedly installed on the top of the linkage platform near the edge.

[0021] The technical effects and advantages provided by the present invention in the above technical solution are as follows:

[0022] 1. A linkage platform is made by selecting a suitable steel plate, and then connected to the tilting mechanism through a rotatable frame on one side. The tilting mechanism is used to rotate and drive the movement of the linkage platform. Whenever the tilting mechanism rotates to a certain position, the platform is pushed outward to avoid collision between the tilting mechanism and the platform. When resetting, the linkage platform is pulled back to bring the linkage platform closer to the processing platform, so that personnel can walk between the linkage platform and the processing platform. This allows personnel to walk to the other side of the plate rolling machine to observe the plate material.

[0023] 2. As the linkage platform is separated from the processing platform under the control of the flipping mechanism, warning components are installed on both sides between the linkage platform and the processing platform. These warning components have a simple structure and use ropes, barrier curtains, and limit switches to separate the external sides of the linkage platform and the processing platform, thereby preventing personnel from accidentally entering the area between the linkage platform and the processing platform and avoiding injury to workers when the linkage platform is merged. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0025] Figure 1 This is a first-dimensional view of the overall structure in this invention;

[0026] Figure 2 This is a second perspective view of the overall structure in this invention;

[0027] Figure 3 This is a first-view exploded view of the linkage platform, warning components, and flipping mechanism in this invention;

[0028] Figure 4 This is a second-view exploded view of the linkage platform, warning components, and flipping mechanism in this invention;

[0029] Figure 5 This is a perspective view of the linkage platform in this invention;

[0030] Figure 6This is an assembly diagram of the flipping mechanism and the first frame in this invention;

[0031] Figure 7 This is a perspective view of the flipping mechanism in this invention;

[0032] Figure 8 This is a perspective view of the locking seat and limit switch in this invention;

[0033] Figure 9 In this invention Figure 1 Enlarged view of area A.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Machining platform; 11. Groove;

[0036] 2. Linkage platform; 21. Guide frame; 22. Rollers; 23. Protective frame;

[0037] 3. Base; 31. Frame 1; 32. Frame 2; 33. Crossbar;

[0038] 4. Work roll assembly; 41. Upper work roll; 42. Lower work roll;

[0039] 5. Warning components; 51. Locking seat; 52. Limit switch; 53. Rope; 54. Barrier curtain; 55. Insert rod;

[0040] 6. Tilting mechanism; 61. Hydraulic cylinder; 62. Connecting rod; 63. Protrusion; 64. Connecting seat; 65. Hollow tube fitting. Detailed Implementation

[0041] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0042] This invention provides, for example Figure 1-9 The detachable telescopic platform shown includes a processing platform 1, a linkage platform 2 is provided on the front exterior of the processing platform 1, warning components 5 are provided on both inner walls below the linkage platform 2, a first frame 31 is provided on the front top of the processing platform 1, and a flipping mechanism 6 is provided below the first frame 31.

[0043] In this embodiment, the processing platform 1 provides a solid foundation for the entire plate rolling operation, ensuring that key components such as the work roller assembly 4, the first frame 31 and the second frame 32 can operate normally, thus guaranteeing the stability and reliability of the plate rolling machine and providing a stable working foundation.

[0044] The flipping mechanism 6 includes:

[0045] Hydraulic cylinder 61 is located outside the base 3 below the first frame 31. The two sides of the tail end of hydraulic cylinder 61 are rotatably connected to the outside of the corresponding base 3. The output end of the front end of hydraulic cylinder 61 is provided with a connecting seat 64. A hollow tube 65 is horizontally fixedly installed on the front side of the connecting seat 64.

[0046] Two connecting rods 62 are respectively set on both sides of the hollow tube 65. The tail ends of the two connecting rods 62 are rotatably connected to the two ends of the hollow tube 65. The front ends of the two connecting rods 62 are fixedly installed with protrusions 63.

[0047] In this embodiment, the linkage platform 2 and the flipping mechanism 6 work together, enabling the separation and merging of the linkage platform 2 and the processing platform 1 under the drive of the flipping mechanism 6. In this way, operators can easily move between the linkage platform 2 and the processing platform 1 without frequently going up and down the original narrow platform, and directly reach the other side of the plate rolling machine to observe the plate material, which significantly improves production efficiency and reduces the safety risks caused by frequent platform climbing.

[0048] Alert component 5 includes:

[0049] Two limit switches 52 are respectively installed on the front of the processing platform 1 and located on both sides of the first frame 31;

[0050] Two ropes 53 are respectively installed on the inner walls of both sides of the linkage platform 2, and the front ends of the two ropes 53 are fixedly connected to the inner walls of both sides of the linkage platform 2.

[0051] In this implementation, when rope 53 is pulled due to an accident, the lower end of the insertion rod 55 at the end of rope 53 will trigger limit switch 52. Limit switch 52 is connected to the equipment's control system. Once triggered, it can immediately take corresponding safety measures, such as stopping the movement of linkage platform 2 and issuing an alarm, to prevent potential dangers and avoid personnel entering the area between linkage platform 2 and processing platform 1. The two ropes 53 are fixed to the inner walls on both sides of linkage platform 2, and their extension direction delineates the boundary of the danger zone between linkage platform 2 and processing platform 1, serving a certain visual warning function to remind operators that there is danger in this area and not to approach it casually.

[0052] Furthermore, in the above technical solution, machine bases 3 are provided on both sides of the processing platform 1. A first frame 31 is set above a machine base 3, and the lower end of the first frame 31 is rotatably connected to the upper end of the corresponding machine base 3. A second frame 32 is installed above the other machine base 3.

[0053] In this embodiment, the two bases 3 provide support for the first frame 31 and the second frame 32, respectively, so that the first frame 31 and the second frame 32 can be stably installed on both sides of the processing platform 1, ensuring the stability of the work roller assembly 4 and the entire plate rolling machine structure. At the same time, the first frame 31 also provides a foundation for the connection of other components of the flipping mechanism 6, ensuring the coordinated operation of each component.

[0054] Furthermore, in the above technical solution, a working roller assembly 4 is provided between the first frame 31 and the second frame 32. The working roller assembly 4 is divided into an upper working roller 41 and two lower working rollers 42. The same end of the upper working roller 41 and the two lower working rollers 42 are separately connected to the first frame 31.

[0055] In this embodiment, the lower end of the first frame 31 is rotatably connected to the upper end of the corresponding base 3, providing a foundation for the installation and rotation of the flipping mechanism 6. In cooperation with the flipping mechanism 6, the linkage platform 2 is driven to flip and move, facilitating operation by personnel on both sides of the plate rolling machine. Furthermore, it is separately connected to one end of the work roller assembly 4, providing support and positioning for the work roller assembly 4, ensuring the stability and accuracy of the work roller during the plate rolling process.

[0056] Furthermore, in the above technical solution, the other end of the two lower working rollers 42 is connected to the lower part of the second frame 32, and the other end of the upper working roller 41 is connected to the upper part of the second frame 32. A transmission mechanism is installed on the outside of the second frame 32, and the upper working roller 41 and the lower working roller 42 are connected to the transmission mechanism at one end of the second frame 32.

[0057] In this embodiment, the second frame 32 is mounted above another base 3, and together with the first frame 31, supports the work roll assembly 4. The second frame 32 is connected to the other end of the work roll assembly 4, providing another support point for one upper work roll 41 and two lower work rolls 42, ensuring that the work rolls can withstand pressure and operate stably during the rolling process, thereby ensuring the quality of the rolled plate. A transmission mechanism is installed outside the second frame 32, which is responsible for transmitting power to the work roll assembly 4 to drive the work rolls to rotate and realize the rolling process of the sheet metal. This is an important part of the automated rolling operation of the plate rolling machine.

[0058] Furthermore, in the above technical solution, a crossbar 33 is fixedly installed on the upper part of the first frame 31 by a support member, the upper end of the connecting seat 64 is rotatably sleeved on the crossbar 33, and the bottom of the connecting seat 64 is fixedly connected to the output end of the hydraulic cylinder 61 by bolts.

[0059] In this embodiment, the upper end of the connecting seat 64 is rotatably sleeved on the crossbar 33. This structural design limits the movement path of the connecting seat 64, allowing it to rotate only around the crossbar 33. This ensures the stability and accuracy of the tilting mechanism 6 during movement, thereby guaranteeing that the linkage platform 2 can move smoothly according to design requirements. In the entire structure, the crossbar 33 acts as a force distributor. When the hydraulic cylinder 61 pushes the connecting seat 64, the crossbar 33 distributes the force on the connecting seat 64 to the first frame 31, reducing the localized stress at the connection between the connecting seat 64 and the output end of the hydraulic cylinder 61, extending the service life of each component, and ensuring the reliability and stability of the entire tilting mechanism 6.

[0060] Furthermore, in the above technical solution, the lower interior of the linkage platform 2 is a hollow structure, and two sets of guide frames 21 are horizontally arranged in the lower interior of the linkage platform 2. Each set consists of two guide frames 21. The guide frames 21 have a through-type structural groove in the horizontal direction. The tail ends of the two guide frames 21 are fixedly connected to the inner wall of the linkage platform 2. The outer walls on both sides of the two protrusions 63 are slidably connected to the grooves on both sides of a set of guide frames 21 through shafts.

[0061] In this embodiment, the groove on the side of the guide frame 21 is slidably connected to the protrusion 63 at the front end of the connecting rod 62 of the flipping mechanism 6 via a shaft. This not only ensures the stability and smoothness of the linkage platform 2 during movement but also precisely limits its movement trajectory, preventing accidental deviation. This connection method accurately transmits the movement of the connecting rod 62 to the linkage platform 2, enabling the linkage platform 2 to move under the drive of the flipping mechanism 6. The cooperation between the protrusion 63 and the guide frame 21 allows the power of the flipping mechanism 6 to be effectively converted into the movement of the linkage platform 2, ensuring the normal operation of the entire platform system. The sliding of the protrusion 63 within the groove of the guide frame 21 not only guides the direction of movement of the linkage platform 2 but also limits its range of motion. By rationally designing the length of the groove of the guide frame 21 and the movement trajectory of the protrusion 63, it is ensured that the linkage platform 2 can perform separation and merging operations within a safe range, avoiding safety accidents such as collisions caused by excessive movement.

[0062] Furthermore, in the above technical solution, the front of the processing platform 1 and the upper sides of the machine base 3 are provided with grooves 11. Locking seats 51 are fixedly installed on the upper inner walls of the two grooves 11. The front end of the locking seat 51 is a vertical through hole. Two limit switches 52 are fixedly installed in the two grooves 11 respectively and are located below the corresponding locking seats 51.

[0063] Furthermore, in the above technical solution, the front end of the rope 53 is provided with a plug rod 55, the front end of the rope 53 is movably sleeved on the top end of the plug rod 55, the lower end of the plug rod 55 is connected to the through hole at the front end of the locking seat 51, and the bottom of the lower end of the plug rod 55 passes through the through hole and abuts against the contact at the top of the limit switch 52.

[0064] In this embodiment, grooves 11 are provided on the upper sides of both sides of the front of the base 3 for installing locking seats 51 and limit switches 52. This provides a reasonable installation position for some components of the warning component 5, thereby effectively warning of dangerous areas between the linkage platform 2 and the processing platform 1, ensuring personnel safety, and preventing collisions with structures such as the limit switches 52. The rope 53 cooperates with the limit switches 52. When a person or object accidentally touches the rope 53, causing the rope 53 to move, the insertion rod 55 at the end of the rope 53 separates from the contact of the limit switch 52, thereby triggering the safety mechanism and enabling timely response to dangerous situations, forcing the coiling machine to stop immediately.

[0065] Furthermore, in the above technical solution, several evenly distributed barrier curtains 54 are vertically arranged on the rope 53. The top of the barrier curtains 54 is connected to the rope 53 through a rubber sleeve. Multiple rollers 22 are installed on both sides of the bottom of the linkage platform 2. A protective frame 23 is fixedly installed on the top of the linkage platform 2 near the edge.

[0066] In this embodiment, the rollers 22 on both sides of the bottom of the linkage platform 2 greatly reduce the friction when the linkage platform 2 moves, allowing it to move easily under the action of the tilting mechanism 6. The protective frame 23 installed at the top of the linkage platform 2 provides protection for personnel working on the linkage platform 2, reducing the risk of accidental falls. Since the blocking effect of a single rope 53 is limited, barrier curtains 54 are installed on the rope 53. These barrier curtains 54 form a clear visual barrier, which can intuitively warn personnel that there is a danger zone between the linkage platform 2 and the processing platform 1, reminding personnel to pay attention to safety and avoid accidental entry. Moreover, the barrier curtains 54 also play a certain physical blocking role, further preventing personnel from inadvertently entering the danger zone between the linkage platform 2 and the processing platform 1, reducing the risk of personnel being pinched when the platforms merge.

[0067] The detachable telescopic platform provided by this invention operates as follows:

[0068] After installation, thoroughly check that all connections are secure and that moving parts can move smoothly. Start the CNC hydraulic plate rolling machine and test the rotation of the work roller assembly 4. Simultaneously operate the hydraulic cylinder 61 to check that the movement of the linkage platform 2 under the drive of the tilting mechanism 6 is normal, and ensure that the limit switch 52, rope 53, and barrier curtain 54 of the warning assembly 5 are functioning properly. Then start the plate rolling machine, driving the upper work roller 41 and lower work roller 42 of the work roller assembly 4 to rotate through the transmission mechanism to roll the plate material to be processed.

[0069] When it is necessary to inspect or weld the sheet metal on the other side of the plate rolling machine, the hydraulic cylinder 61 is activated to pull the connecting seat 64. The connecting seat 64 rotates around the crossbar 33, causing the hollow tube 65 to move. This, in turn, causes the connecting rod 62 to rotate around the hollow tube 65. The protrusion 63 at the front end of the connecting rod 62 slides in the groove of the guide frame 21 inside the linkage platform 2, causing the linkage platform 2 to rotate around the rotation connection point between the first frame 31 and the base 3. When it rotates to a certain position, the linkage platform 2 fits against the processing platform 1. After reaching the appropriate position, the operator can walk from the processing platform 1 to the other side of the plate rolling machine via the linkage platform 2. After the operation is completed, the hydraulic cylinder 61 is operated to move it away, and the linkage platform 2 separates from the processing platform 1 under the action of the rotating mechanism 6.

[0070] During the rotation and movement of the linkage platform 2, the ropes 53 on the inner walls of both sides of the linkage platform 2 move accordingly. The barrier curtains 54 on the ropes 53 separate the external sides between the linkage platform 2 and the processing platform 1, warning surrounding personnel that this is a danger zone. If a person or object touches the ropes 53 during the platform's movement, the ropes 53 will drive the insertion rod 55 to move. The lower end of the insertion rod 55 will separate from the contact at the top of the limit switch 52. After the limit switch 52 is triggered, the control system can take corresponding safety measures, such as stopping the hydraulic cylinder 61, to stop the linkage platform 2 from moving and prevent accidents.

[0071] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A detachable and linked telescopic platform comprising a working platform (1), characterized in that: The front side of the processing platform (1) is externally provided with a linkage platform (2), both sides of the lower inner wall of the linkage platform (2) are provided with warning assemblies (5), and the front side of the processing platform (1) is provided with a first rack (31) above. The turnover mechanism (6) comprises: A hydraulic cylinder (61) is arranged outside the base (3) below the first rack (31), both sides of the tail end of the hydraulic cylinder (61) are externally rotatably connected to the corresponding base (3) below, and the output end of the front end of the hydraulic cylinder (61) is provided with a connecting seat (64), and the front side of the connecting seat (64) is transversely fixedly installed with a hollow pipe (65). Two connecting rods (62) are arranged on both sides of the hollow pipe (65), and the tail ends of the two connecting rods (62) are rotatably connected to both ends of the hollow pipe (65), and the front ends of the two connecting rods (62) are fixedly installed with protrusions (63). The warning assembly (5) comprises: Two limit switches (52) are arranged on the front side of the processing platform (1) and located on both sides of the first rack (31); Two ropes (53) are arranged on the inner walls of both sides of the linkage platform (2), and one end of each of the two ropes (53) is fixedly connected to the inner walls of both sides of the linkage platform (2). The inside of the linkage platform (2) is hollow, and two groups of guide frames (21) are transversely arranged on the inside of the linkage platform (2), every two guide frames (21) form a group, the guide frames (21) are transversely provided with through-type structure grooves, the tail ends of the two guide frames (21) are fixedly connected to the inner walls of the linkage platform (2), and the two protrusions (63) are slidably connected to the grooves on both sides of a group of guide frames (21) through shaft rods.

2. The detachable linked telescopic platform according to claim 1, wherein: Both sides of the processing platform (1) are provided with bases (3), the first rack (31) is arranged above one of the bases (3), the lower end of the first rack (31) is rotatably connected to the upper end of the corresponding base (3), and the upper end of the other base (3) is provided with a second rack (32).

3. The detachable linked telescopic platform according to claim 2, wherein: The working roller assembly (4) is arranged between the first rack (31) and the second rack (32), the working roller assembly (4) comprises an upper working roller (41) and two lower working rollers (42), and the same end of the upper working roller (41) and the two lower working rollers (42) is connected to the first rack (31) in a split manner.

4. The detachable linked telescopic platform according to claim 3, wherein: The other end of the two lower working rollers (42) is connected to the lower side of the second rack (32), the other end of the upper working roller (41) is connected to the upper side of the second rack (32), the outer sides of the second rack (32) are provided with transmission mechanisms, and one end of the upper working roller (41) and the lower working roller (42) located on the second rack (32) is connected to the transmission mechanism.

5. The detachable linked telescopic platform according to claim 1, wherein: The outer top of the first rack (31) is fixedly provided with a cross rod (33) through a support, the upper end of the connecting seat (64) is rotatably sleeved on the cross rod (33), and the bottom of the connecting seat (64) is fixedly connected with the output end of the hydraulic cylinder (61) through bolts.

6. The detachable linked telescopic platform according to claim 1, wherein: The front side of the processing platform (1) is provided with a recess (11) above both sides of the base (3), the inner wall of each recess (11) is fixedly provided with a locking seat (51), the front end of the locking seat (51) is a vertical through hole, and two limit switches (52) are fixedly installed in the two recesses (11) and below the corresponding locking seats (51).

7. The detachable linked telescopic platform according to claim 6, wherein: The end of the rope (53) away from the connecting linkage platform (2) is provided with a plug rod (55), the front end of the rope (53) is movably sleeved on the top end of the plug rod (55), the lower end of the plug rod (55) is connected with the through hole at the front end of the locking seat (51), and the lower end of the plug rod (55) is in contact with the contact of the limit switch (52) through the through hole.

8. The detachable linked telescopic platform according to claim 1, wherein: A plurality of evenly distributed blocking curtains (54) are vertically arranged on the rope (53), the top end of the blocking curtain (54) is connected with the rope (53) through a rubber sleeve, a plurality of rollers (22) are installed on the bottom of the linkage platform (2), and a protective frame (23) is fixedly installed on the top end of the linkage platform (2) and close to the edge position. The outer top of the first rack (31) is fixedly provided with a cross rod (33) through a support, the upper end of the connecting seat (64) is rotatably sleeved on the cross rod (33), and the bottom of the connecting seat (64) is fixedly connected with the output end of the hydraulic cylinder (61) through bolts.

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