Follow-up folding guardrail for well repair racking platform and well repair racking platform

Abstract

The invention relates to the technical field of racking platforms, and provides a follow-up folding guardrail for a workover racking platform and the workover racking platform, and the follow-up folding guardrail for the workover racking platform comprises a rear fence which is connected to the first end of a racking platform body in a turnover mode; the lifting rope guardrail is arranged on the inner side of the rear fence, the rear fence is rotatably connected to the racking platform main body, and the lifting rope guardrail is connected with the rear fence through a first follow-up connecting rod; the monkey way guardrail is arranged on the inner side of the lifting rope guardrail, the monkey way guardrail is rotatably connected to the racking platform main body, and the monkey way guardrail is connected with the lifting rope guardrail through a second follow-up connecting rod; the rear fence, the lifting rope guardrail and the monkey way guardrail are all rotatably connected to the racking platform body, follow-up folding of the rear fence, the lifting rope guardrail and the monkey way guardrail is achieved, flexible folding and unfolding can be conducted according to needs, frequent high-altitude mounting and dismounting operation is avoided, and therefore the falling risk of operators is greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of second-layer platforms, in particular to a follow-up folding guardrail for a well repair second-layer platform and the well repair second-layer platform. Background Art

[0002] The second-level platform is an essential equipment for overhaul machines, and the second-level platform is one of the dangerous working areas in well repair operations recognized by the oil industry. The second-level platform of the overhaul machine is directly installed on the derrick, and the second-level platform is automatically deployed as the upper section of the derrick is extended. However, the guardrail on the second-level platform needs to be deployed in place and then installed manually through high-altitude operations.

[0003] Traditional well repair second-floor platform guardrails are mostly detachable and need to be installed at high altitudes, which poses a greater risk of falling during high-altitude installation. In addition, the separately detachable second-floor platform guardrails need to be installed before each lifting and lowering of the derrick, which increases the workload of installation and dismantling and prolongs the operation cycle. Summary of the invention

[0004] The invention provides a follow-up folding guardrail for a well repairing second-layer platform and a well repairing second-layer platform, which are used to solve the problems of low installation efficiency and great safety risks of the guardrail of the well repairing second-layer platform in the prior art.

[0005] The present invention provides a follow-up folding guardrail for a second-layer platform for well repair, comprising: A rear fence is reversibly connected to the first end of the second-tier platform body; A rope guardrail is arranged on the inner side of the rear fence, the rear fence is rotatably connected to the second-layer platform body, and the rope guardrail is connected to the rear fence through a first follower link, when the rope guardrail flips in a first direction, the first follower link can drive the rear fence to rotate in the same direction; A monkey way guardrail is arranged on the inner side of the hanging rope guardrail, and the monkey way guardrail is rotatably connected to the second-level platform main body. The monkey way guardrail is connected to the hanging rope guardrail through a second follower link; when the hanging rope guardrail flips along a first direction, the second follower link can drive the monkey way guardrail to rotate in the same direction to fold the monkey way guardrail; when the hanging rope guardrail flips along a second direction, the second follower link can drive the monkey way guardrail to rotate in the same direction to unfold the monkey way guardrail, and the first direction is opposite to the second direction.

[0006] According to the follow-up folding guardrail for the second-level well repair platform provided by the present invention, a pair of the rope guardrail and the monkey way guardrail are provided, a pair of the rope guardrails are relatively arranged on both sides of the second-level platform body, a pair of the monkey way guardrails are spaced between the pair of rope guardrails, and both sides of the rear fence are connected to the pair of rope guardrails through a first follow-up connecting rod respectively.

[0007] According to the follow-up folding guardrail for the second-level platform for well repair provided by the present invention, the monkey path guardrail includes a transverse connecting rod and a plurality of connecting vertical rods, the plurality of connecting vertical rods are arranged at intervals, and the bottom ends of the connecting vertical rods are hinged to the second-level platform body, the two ends of the transverse connecting rod are respectively hinged to the top ends of the connecting vertical rods, the connecting vertical rod close to the suspension rope guardrail is hinged to the second follow-up connecting rod, and the connecting vertical rod can rotate in the first direction or the second direction.

[0008] According to the follow-up folding guardrail for the second-level well repair platform provided by the present invention, an oblique connecting piece is provided at the top end of the connecting vertical rod, the free end of the oblique connecting piece is hinged to the transverse connecting rod, and the hinge point between the oblique connecting piece and the transverse connecting rod is located outside the central axis of the connecting vertical rod.

[0009] The follow-up folding guardrail for the second-level well repair platform provided by the present invention also includes an intermediate crossbar, and the intermediate crossbar is hinged to each of the connecting vertical rods.

[0010] According to the follow-up folding guardrail for the second-level well repair platform provided by the present invention, a rope pulley is arranged on the top of the rope guardrail for connecting with the rope of the derrick.

[0011] In the second aspect, the present invention also provides a second-level platform for well repair, comprising a monkey way, a second-level platform main body and a follow-up folding guardrail for the second-level platform for well repair as described in the first aspect, wherein the monkey way guardrail of the follow-up folding guardrail for the second-level platform for well repair is arranged on both sides of the monkey way, the rear fence of the follow-up folding guardrail for the second-level platform for well repair is arranged at the first end of the second-level platform main body, and the second end of the second-level platform main body can be rotatably connected to the derrick.

[0012] The well repair second-level platform provided according to the present invention also includes a walkway, which is rotatably connected to both sides of the second-level platform body, and the walkway can be switched between a folded state and an unfolded state. In the folded state, the surface of the walkway is perpendicular to the surface of the second-level platform body; in the unfolded state, the walkway is located on the outside of the second-level platform body, and the surface of the walkway is parallel to the surface of the second-level platform body.

[0013] The second-level well repair platform provided according to the present invention also includes a walkway guardrail, which is arranged on the outside of the walkway, and the walkway can be switched between a first state and a second state. In the first state, the walkway guardrail is perpendicular to the surface of the walkway; in the second state, the walkway guardrail can be flipped inward to contact the surface of the walkway.

[0014] According to the second-level well repair platform provided by the present invention, the walkway guardrail includes a first guardrail and a second guardrail, the first guardrail is hinged to the outer side of the walkway, the first guardrail includes a plurality of casings, the second guardrail includes a plurality of plug-in rods, the plug-in rods are plug-fitted with the casings, the plug-in rods can move axially in the casings, and a positioning structure is provided between the casings and the plug-in rods.

[0015] The present invention provides a follow-up folding guardrail for a second-layer platform for well repair, comprising: a rear fence, a hanging rope guardrail and a monkey path guardrail. It can be seen from the above scheme that the present invention can rotatably connect the rear fence, the hanging rope guardrail and the monkey path guardrail to the second-layer platform body, and realizes the follow-up folding of the rear fence, the hanging rope guardrail and the monkey path guardrail, which can be flexibly folded and unfolded as needed. This design not only facilitates the storage and transportation of the guardrail, but also enables it to be quickly unfolded when needed to provide necessary safety protection; through the design of the first follow-up connecting rod and the second follow-up connecting rod, when the hanging rope guardrail is When the fence flips in a certain direction, it can automatically drive the rear fence and the monkey path guardrail to rotate in the same direction. This follow-up design significantly improves the folding and unfolding efficiency of the guardrail. There is no need to manually flip the guardrails one by one, which reduces the complexity of operation and time cost, shortens the operation cycle, and improves the overall operation efficiency. In addition, since traditional well repair second-floor platform guardrails are mostly detachable and need to be installed at high altitudes, there are great safety risks. The present invention avoids frequent high-altitude installation and dismantling operations through a follow-up folding design, thereby greatly reducing the risk of falling for operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the second-layer well repair platform provided in an embodiment of the present invention.

[0018] Figure 2 yes Figure 1 A partial enlarged view of .

[0019] Figure 3 The present invention is a schematic structural diagram of a folded state of a follow-up folding guardrail for a second-level well repair platform provided by an embodiment of the present invention.

[0020] Figure 4 It is a schematic diagram of the structure of the walkway guardrail provided in an embodiment of the present invention.

[0021] Figure 5It is a schematic diagram of the structure of the monkey path guardrail provided in an embodiment of the present invention.

[0022] Reference numerals: 1. Rear fence; 2. Second-floor platform body; 3. Rope guardrail; 31. Rope pulley; 32. Rope; 4. Monkey path guardrail; 41. Connecting vertical rod; 42. Horizontal connecting rod; 43. Oblique connecting piece; 44. Middle horizontal rod; 5. First follow-up connecting rod; 6. Second follow-up connecting rod; 7. Monkey path; 8. Aisle; 9. Aisle guardrail; 91. Casing; 92. Connecting rod; 93. Removable connecting rod; 10. Inner guardrail; 11. Limiting groove. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Combine the following Figure 1-Figure 5 The invention describes a follow-up folding guardrail for a well repair second-level platform and a well repair second-level platform.

[0025] The embodiment of the present invention provides a follow-up folding guardrail for a second-level well repair platform, comprising: a rear fence 1, a hanging rope guardrail 3 and a monkey path guardrail 4.

[0026] The end of the second-layer platform body 2 away from the derrick is defined as the first end, the end of the second-layer platform body 2 connected to the derrick is defined as the second end, and the rear fence 1 is flippably connected to the first end of the second-layer platform body 2.

[0027] The rope guardrail 3 is arranged on the inner side of the rear fence 1, and the rear fence 1 is rotatably connected to the second-level platform body 2, and the rope guardrail 3 is connected to the rear fence 1 through a first follower link 5. When the rope guardrail 3 flips along the first direction, the first follower link 5 can drive the rear fence 1 to rotate in the same direction.

[0028] The monkey way guardrail 4 is arranged on the inner side of the hanging rope guardrail 3, and the monkey way guardrail 4 is rotatably connected to the second-level platform main body 2. The monkey way guardrail 4 is connected to the hanging rope guardrail 3 through the second follower link 6; when the hanging rope guardrail 3 flips along the first direction, the second follower link 6 can drive the monkey way guardrail 4 to rotate in the same direction to fold the monkey way guardrail 4; when the hanging rope guardrail 3 flips along the second direction, the second follower link 6 can drive the monkey way guardrail 4 to rotate in the same direction to unfold the monkey way guardrail 4, the first direction is opposite to the second direction, the first direction can be clockwise, and the second direction is counterclockwise.

[0029] It can be seen from the above scheme that the present invention can rotatably connect the rear fence 1, the rope guardrail 3 and the monkey path guardrail 4 to the second-level platform body 2, and realize the follow-up folding of the rear fence 1, the rope guardrail 3 and the monkey path guardrail 4, which can be flexibly folded and unfolded as needed. This design not only facilitates the storage and transportation of the guardrail, but also enables it to be quickly unfolded when needed to provide necessary safety protection; through the design of the first follow-up connecting rod 5 and the second follow-up connecting rod 6, when the rope guardrail 3 is flipped in a certain direction, the rear fence 1 and the monkey path guardrail 4 can be automatically driven to rotate in the same direction. This follow-up design significantly improves the folding and unfolding efficiency of the guardrail, and there is no need to manually flip the guardrail one by one, which reduces the complexity and time cost of operation, shortens the operation cycle, and improves the overall operation efficiency; and, since most of the traditional well repair second-level platform guardrails are detachable and need to be installed at high altitude, there is a great safety risk. The present invention avoids frequent high-altitude installation and dismantling operations through the follow-up folding design, thereby greatly reducing the risk of falling of operators.

[0030] When the above-mentioned rear fence 1, rope guardrail 3 and monkey path guardrail 4 are in working state, the rope guardrail 3 and the rear fence 1 are parallel to each other, and the monkey path guardrail 4 is perpendicular to the rope guardrail 3.

[0031] like Figure 1-Figure 3 As shown, a pair of rope guardrails 3 and monkey path guardrails 4 are provided, a pair of rope guardrails 3 are relatively arranged on both sides of the second-floor platform main body 2, a pair of monkey path guardrails 4 are arranged between the pair of rope guardrails 3, the length direction of the monkey path guardrail 4 is perpendicular to the length direction of the rope guardrail 3, and the two sides of the rear fence 1 are respectively connected to the pair of rope guardrails 3 through the first follow-up connecting rod 5.

[0032] In some embodiments, fence vertical bars are set on both sides of the rear fence 1, and rope vertical bars 32 are set on both sides of the rope guardrail 3, the two vertical bars are located in the same plane, and the length of the rope vertical bar 32 is greater than the length of the fence vertical bar, so that the end of the first follower link 5 hinged with the rope vertical bar 32 is higher than the end of the first follower link 5 hinged with the fence vertical bar; and the height of the hinge point between the rope guardrail 3 and the second-floor platform body 2 is greater than the height of the hinge point between the rear fence 1 and the second-floor platform body 2, so that the shape surrounded by the fence vertical bars, the rope vertical bars 32 and the first follower link 5 is a parallelogram. With the flipping of the rope guardrail 3, the follow-up opening and flipping of the rear fence 1 and the rope guardrail 3 are realized without manual flipping.

[0033] Optionally, the first follower links 5 are arranged in pairs, that is, the vertical rods of the fence are hinged between a pair of first follower links 5, and the vertical rods of the suspension rope 32 are also hinged between a pair of first follower links 5. A pin can be passed through the vertical rods and the pair of first follower links 5 at the same time to achieve a hinged connection between the vertical rods and the first follower links 5.

[0034] In this embodiment, the monkey path guardrail 4 includes a transverse connecting rod 42 and a plurality of connecting vertical rods 41. The plurality of connecting vertical rods 41 are arranged at intervals, and the bottom ends of the connecting vertical rods 41 are hinged to the second-level platform body 2, and the two ends of the transverse connecting rod 42 are respectively hinged to the top ends of the connecting vertical rods 41, and the second follower connecting rod 6 is hinged to the connecting vertical rod 41, and the connecting vertical rod 41 can rotate in the first direction or the second direction.

[0035] In this arrangement, the transverse connecting rod 42 is connected to multiple connecting vertical rods 41 by a hinged manner to form a parallelogram structure, which is not only conducive to enhancing the stability of the overall guardrail structure, but also conducive to realizing the deformation of the monkey path guardrail 4. When the rope guardrail 3 rotates, the second follower link 6 drives the connected connecting vertical rods 41 to move together, ultimately realizing the folding and unfolding of the monkey path guardrail 4.

[0036] Furthermore, an oblique connecting member 43 is provided at the top end of the connecting vertical rod 41, and the free end of the oblique connecting member 43 is hinged to the transverse connecting rod 42, and the hinge point between the oblique connecting member 43 and the transverse connecting rod 42 is located outside the central axis of the connecting vertical rod 41. In other words, the hinge point between the oblique connecting member 43 and the transverse connecting rod 42 deviates from the central axis of the connecting vertical rod 41, so that when the connecting vertical rod 41 is laid flat, the transverse connecting rod 42 can still be connected to the vertical rod through the oblique connecting member 43, thereby maintaining the geometric shape of a parallelogram. This design ensures that there will be no dead point in the normal flipping process of the monkey road guardrail 4, so that the guardrail can remain smooth and unobstructed during the entire flipping process.

[0037] like Figure 5 As shown, it also includes an intermediate crossbar 44, which is arranged below the transverse connecting rod 42 and parallel to the transverse connecting rod 42, and the intermediate crossbar 44 is hinged with each connecting vertical rod 41. Such an arrangement can enhance the structural stability of the monkey road guardrail 4 and ensure that the monkey road guardrail 4 will not deflect during the deformation process.

[0038] In this embodiment, a rope pulley 31 is provided at the top of the rope guardrail 3. The rope pulley 31 is a fixed pulley. The rope pulley 31 can be provided at the top of the vertical rod of the rope 32 for connecting with the rope 32 of the derrick.

[0039] With such arrangement, through the design of the rope pulley 31, the operator can more conveniently fold and unfold the second-level platform. The second-level platform can be raised and lowered and folded simply by pulling or releasing the rope 32, which greatly simplifies the operation process. In addition, the rope pulley 31 helps to disperse the stress on the rope 32. When the second-level platform is lifted, the tension on the rope 32 is evenly transmitted through the rope pulley 31, thereby avoiding structural damage caused by stress concentration. By using the rope pulley 31 reasonably, the stress condition of the rope 32 can be optimized, which enables the rope guardrail 3 to withstand a greater weight. The design of the rope pulley 31 also enables the second-level platform to be quickly unfolded or folded as needed, thereby improving the flexibility of the entire system, which helps to adapt to changes in different working environments and operating requirements.

[0040] The embodiment of the present invention also provides a well repairing second-floor platform, comprising a monkey path 7, a second-floor platform body 2, and the above-mentioned follow-up folding guardrail for the well repairing second-floor platform, wherein the monkey path guardrail 4 of the follow-up folding guardrail for the well repairing second-floor platform is arranged on both sides of the monkey path 7, the rear fence 1 of the follow-up folding guardrail for the well repairing second-floor platform is arranged at the first end of the second-floor platform body 2, the second end of the second-floor platform body 2 can be rotatably connected to the derrick, the suspension rope guardrail 3 is connected to the derrick second-floor platform through the suspension rope 32, and the second-floor platform is opened and laid flat as the derrick is extended and retracted. Due to the adoption of the above-mentioned follow-up folding guardrail for the well repairing second-floor platform, the well repairing second-floor platform has all the advantages of the above-mentioned follow-up folding guardrail for the well repairing second-floor platform, which will not be described in detail.

[0041] In some embodiments, a connecting ear plate is provided at the second end of the second-layer platform body 2, and the rotation connection between the second-layer platform body 2 and the derrick is realized by connecting the ear plate and the pin shaft.

[0042] In this embodiment, the walkway 8 is also included. The walkway 8 is rotatably connected to both sides of the second-layer platform body 2, and the walkway 8 can be switched between a folded state and an unfolded state. In the folded state, the surface of the walkway 8 is perpendicular to the surface of the second-layer platform body 2; in the unfolded state, the walkway 8 is located on the outside of the second-layer platform body 2, and the surface of the walkway 8 is parallel to the surface of the second-layer platform body 2.

[0043] Such an arrangement can achieve rapid deployment and save space. When the walkway 8 needs to be used, it can be quickly switched from a folded state to an unfolded state to facilitate the passage of personnel or equipment. When not in use, the walkway 8 can be folded up so that the surface of the walkway 8 is perpendicular to the surface of the second-layer platform body 2, reducing the space it occupies. Therefore, the rotatable connection design of the walkway 8 allows the operator to easily switch it from a folded state to an unfolded state without the need for complicated operating steps or tools, which simplifies the operating process and improves work efficiency.

[0044] Optionally, the walkway 8 is rotatably connected to both sides of the second-tier platform body 2 through multiple hinges. Alternatively, a pin shaft and an ear plate with a hole are set between the outer side of the second-tier platform body 2 and the walkway 8, and the rotational connection between the walkway 8 and the second-tier platform body 2 is achieved by inserting the pin shaft into the ear plate.

[0045] Reference Figure 2-Figure 3 In this embodiment, an inner guardrail 10 is provided on the inner side of the walkway 8, and the inner guardrail 10 is fixed on the second-floor platform body 2. A limiting structure is provided at the position of the rope guardrail 3 corresponding to the side guardrail. For example, a limiting groove 11 is provided on the outer side of the vertical rod of the rope 32. The limiting groove 11 can cooperate with the end vertical rod of the inner guardrail 10 to position the rope guardrail 3. When the limiting groove 11 cooperates with the end vertical rod of the inner guardrail 10, it indicates that the rope guardrail 3 is rotated into place. At this time, the rope guardrail 3 is perpendicular to the surface of the second-floor platform body 2.

[0046] Optionally, the limiting groove 11 can be formed by a pair of clip plates and a connecting block, the connecting block is fixed to the outside of the vertical rod of the suspension rope 32, a pair of clip plates are relatively connected on both sides of the connecting block, and the spacing between the pair of clip plates gradually increases from the clip block to the outside, so as to quickly realize the docking of the end vertical rod of the inner guardrail 10 with the limiting groove 11 and accurately position it.

[0047] Furthermore, it also includes a walkway guardrail 9, which is arranged on the outside of the walkway 8, and the walkway 8 can be switched between a first state and a second state. In the first state, the walkway guardrail 9 is perpendicular to the surface of the walkway 8; in the second state, the walkway guardrail 9 can be flipped inward to contact the surface of the walkway 8.

[0048] In this way, in the first state, the aisle guardrail 9 is perpendicular to the surface of the aisle 8, providing effective protection for the workers walking on the aisle 8 to prevent them from falling from the aisle 8 due to accidental slips or loss of balance. In the second state, the aisle guardrail 9 can be flipped inward to contact the surface of the aisle 8. This design allows the aisle guardrail 9 to be flexibly retracted and close to the surface of the aisle 8 without taking up additional space. The flippable design of the aisle guardrail 9 can be adjusted according to work requirements or environmental conditions without the need for complicated steps or tools. This allows the operator to quickly switch the aisle guardrail 9 from one state to another when needed, thereby improving work efficiency and reducing the danger of working at heights.

[0049] like Figure 4 As shown, the aisle guardrail 9 includes a first guardrail and a second guardrail. The first guardrail is hinged to the outer side of the aisle 8. The first guardrail includes a plurality of sleeves 91, and the second guardrail includes a plurality of plug-in rods 92. The plug-in rods 92 are plugged into the sleeves 91. The plug-in rods 92 can move axially in the sleeves 91, and a positioning structure is provided between the sleeves 91 and the plug-in rods 92.

[0050] With such arrangement, the height of the aisle guardrail 9 can be adjusted according to the use environment. By changing the length of the plug-in rod 92 in the sleeve 91, the overall height of the first guardrail and the second guardrail can be adjusted, that is, the height of the aisle guardrail 9 can be adjusted. After adjustment, the length of the plug-in rod 92 in the sleeve 91 can be locked by the positioning structure to ensure the overall stability and reliability of the aisle guardrail 9, so that the design of the aisle guardrail 9 is both practical and safe.

[0051] In some embodiments, the positioning structure includes a plurality of first sockets arranged on the sleeve 91, a plurality of second sockets arranged on the plug-in rod 92, and a connecting pin. The plurality of first sockets are arranged along the axial direction of the sleeve 91, and the plurality of second sockets are arranged along the axial direction of the plug-in rod 92. The connecting pin passes through the first sockets and the second sockets in sequence to fix the connecting rod and the sleeve 91 in connection.

[0052] Furthermore, a detachable connecting rod 93 is provided between adjacent plug-in rods 92 of the second guardrail. The detachable connecting rod 93 can be arranged perpendicular to the plug-in rod 92. The two ends of the detachable connecting rod 93 are respectively detachably connected to the plug-in rod 92 through connecting pins or bolts, and the number of detachable connecting rods 93 can be set according to actual needs. When multiple detachable connecting rods 93 are provided, the multiple detachable connecting rods 93 are spaced apart along the height direction to improve the overall structural stability of the second guardrail.

[0053] In a specific embodiment, the first guardrail is connected to the outer side of the walkway 8 through a U-shaped connecting pin, that is, the connecting pin has two insertion rods, which can provide a certain fixing force after insertion relative to the pin shaft. By inserting the two insertion rods into the corresponding connecting holes at the same time, the first guardrail and the walkway 8 are fixed in the first state or the second state.

[0054] Specifically, when storing the walkway guardrail 9, first, remove the detachable connecting rod 93 of the second guardrail, then release the connection between the sleeve 91 and the plug-in rod 92 through the positioning structure, insert the plug-in rod 92 into the sleeve 91, reduce the overall height of the walkway guardrail 9, and make its height no greater than the width of the walkway 8, to ensure that the walkway guardrail 9 can be in close contact with the surface of the walkway 8 after folding; then, remove the U-shaped connecting pin, release the vertical connection between the first guardrail and the walkway 8, flip the walkway guardrail 9 so that it contacts the surface of the walkway 8, and then insert the U-shaped connecting pin into the corresponding hole to lock the walkway guardrail 9 and the walkway 8 in a contact state; finally, when the derrick retracts, the second-floor platform main body 2 flips along with the traction of the suspension rope, and under the action of gravity, the walkway 8 can be flipped together with the walkway guardrail 9 to achieve a folded state perpendicular to the second-floor platform main body 2.

[0055] The two-layer well repair platform provided by the present invention has the following beneficial effects: 1. Through the design of the first follower link 5 and the second follower link 6, when the rope guardrail 3 is turned in a certain direction, the rear fence 1 and the monkey path guardrail 4 can be automatically driven to rotate in the same direction. This follow-up design significantly improves the folding and unfolding efficiency of the guardrail, and there is no need to manually turn over the guardrails one by one, which reduces the complexity of operation and time cost.

[0056] 2. The follow-up folding design avoids frequent high-altitude installation and dismantling operations, thereby greatly reducing the risk of falling for operators.

[0057] 3. The Monkey Road guardrail 4 is designed as a parallelogram structure, which can maintain the stability of the structure even in the fully folded state, ensuring that there will be no dead spots or jams in the guardrail during the flipping process, further improving the safety performance.

[0058] 4. The aisle guardrail 9 is designed as a telescopic + flip structure. By adding and removing the detachable guardrail, it can adapt to the needs of aisles 8 of different widths. This design enables the guardrail to be flexibly applied to various working scenarios, improving the versatility and practicality of the equipment; and when the aisle guardrail 9 is stored on the surface of the aisle 8, when the second-level platform is flipped, the aisle guardrail 9 and the aisle 8 can achieve synchronous free flipping and limiting under the action of gravity, without manual flipping, which improves the working efficiency.

[0059] 5. The number of times the guardrail is disassembled and assembled is reduced, thereby reducing the workload of installation and disassembly, which not only saves labor costs, but also shortens the operation cycle and improves the overall operation efficiency.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A follow-up folding guardrail for a second-level well repair platform, characterized in that: include: A rear fence (1) is reversibly connected to a first end of the second-tier platform body (2); A rope guardrail (3) is arranged on the inner side of the rear fence (1); the rear fence (1) is rotatably connected to the second-layer platform body (2); and the rope guardrail (3) and the rear fence (1) are connected via a first follower link (5); when the rope guardrail (3) turns over in a first direction, the first follower link (5) can drive the rear fence (1) to rotate in the same direction; A monkey path guardrail (4) is arranged on the inner side of the hanging rope guardrail (3), the monkey path guardrail (4) is rotatably connected to the second-layer platform body (2), and the monkey path guardrail (4) and the hanging rope guardrail (3) are connected via a second follower link (6); when the hanging rope guardrail (3) flips in a first direction, the second follower link (6) can drive the monkey path guardrail (4) to rotate in the same direction to fold the monkey path guardrail (4); when the hanging rope guardrail (3) flips in a second direction, the second follower link (6) can drive the monkey path guardrail (4) to rotate in the same direction to unfold the monkey path guardrail (4), the first direction being opposite to the second direction.

2. The follow-up folding guardrail for the second-level well repair platform according to claim 1 is characterized in that: The rope guardrail (3) and the monkey path guardrail (4) are each provided in a pair, the rope guardrail (3) being arranged oppositely on both sides of the second-layer platform body (2), the monkey path guardrail (4) being arranged between the rope guardrail (3), and the length direction of the monkey path guardrail (4) being perpendicular to the length direction of the rope guardrail (3), and the two sides of the rear fence (1) being connected to the rope guardrail (3) via a first follower connecting rod (5).

3. The follow-up folding guardrail for the second-level well repair platform according to claim 2 is characterized in that: The monkey path guardrail (4) comprises a transverse connecting rod (42) and a plurality of connecting vertical rods (41), wherein the plurality of connecting vertical rods (41) are arranged at intervals, and the bottom ends of the connecting vertical rods (41) are hinged to the second-layer platform body (2), and the two ends of the transverse connecting rod (42) are respectively hinged to the top ends of the connecting vertical rods (41), and the connecting vertical rod (41) close to the suspension rope guardrail (3) is hinged to the second follower connecting rod (6), and the connecting vertical rod (41) can rotate in a first direction or a second direction.

4. The follow-up folding guardrail for the second-level well repair platform according to claim 3 is characterized in that: An oblique connecting member (43) is provided at the top end of the connecting vertical rod (41), the free end of the oblique connecting member (43) is hinged to the transverse connecting rod (42), and the hinge point between the oblique connecting member (43) and the transverse connecting rod (42) is located outside the central axis of the connecting vertical rod (41).

5. The follow-up folding guardrail for the second-level well repair platform according to claim 4 is characterized in that: It also includes an intermediate crossbar (44), wherein the intermediate crossbar (44) is hingedly connected to each of the connecting vertical bars (41).

6. The follow-up folding guardrail for the second-level well repair platform according to claim 1 is characterized in that: A rope pulley (31) is provided at the top of the rope guardrail (3) and is used to be connected to a rope (32) of the derrick.

7. A two-layer well repair platform, characterized in that: It comprises a monkey walkway (7), a second-level platform body (2), and a follow-up folding guardrail for a well repair second-level platform as claimed in any one of claims 1 to 6, wherein the monkey walkway guardrail (4) of the follow-up folding guardrail for the well repair second-level platform is arranged on both sides of the monkey walkway (7), the rear fence (1) of the follow-up folding guardrail for the well repair second-level platform is arranged at the first end of the second-level platform body (2), and the second end of the second-level platform body (2) can be rotatably connected to the derrick.

8. The second-level well repair platform according to claim 7, characterized in that: The invention also comprises a walkway (8), wherein the walkway (8) is rotatably connected to both sides of the second-layer platform body (2), and the walkway (8) can be switched between a folded state and an unfolded state. In the folded state, the surface of the walkway (8) is perpendicular to the surface of the second-layer platform body (2); in the unfolded state, the walkway (8) is located outside the second-layer platform body (2), and the surface of the walkway (8) is parallel to the surface of the second-layer platform body (2).

9. The second-level well repair platform according to claim 8, characterized in that: It also includes a walkway guardrail (9), the walkway guardrail (9) is arranged on the outside of the walkway (8), and the walkway (8) can be switched between a first state and a second state. In the first state, the walkway guardrail (9) is perpendicular to the surface of the walkway (8); In the second state, the walkway guardrail (9) can be flipped inwards to contact the surface of the walkway (8).

10. The second-level well repair platform according to claim 9, characterized in that: The walkway guardrail (9) comprises a first guardrail and a second guardrail, the first guardrail being hinged to the outer side of the walkway (8), the first guardrail comprising a plurality of sleeves (91), the second guardrail comprising a plurality of plug-in rods (92), the plug-in rods (92) being plug-fitted with the sleeves (91), the plug-in rods (92) being able to move axially within the sleeves (91), and a positioning structure being provided between the sleeves (91) and the plug-in rods (92).

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