Mechanism for lifting guides and rolling mill

Abstract

The utility model belongs to rolling mill technical field discloses a mechanism and rolling mill for hoisting guide, the mechanism for hoisting guide includes main lever and limit piece, main lever includes main rod, first cross bar and second cross bar, first cross bar and second cross bar interval and opposite setting, and first cross bar's first end and second cross bar's first end all are connected in main rod to form U type structure, first cross bar is located the top of second cross bar, and the second end of first cross bar is used for connecting sling, and the sling is connected with the travelling crane, and the second end of second cross bar is used for with the top of guide detachable connection, one end of limit piece is connected in the side of main rod away from first cross bar and second cross bar, and the other end of limit piece can limit and hold guide. Through the main lever and limit piece of collaborative cooperation hoist guide, can directly with guide fast and stable hoist, save time and labour, make hoisting efficiency be higher, and can avoid the security risk that appears in the process of manual pushing, improve hoisting security.

Description

Technical Field

[0001] This utility model relates to the field of rolling mill technology, and in particular to a mechanism for hoisting guides and a rolling mill. Background Technology

[0002] In bar and wire rod production lines, the guides in the rolling mills used for rolling bars and wire rods occupy a large area and are quite heavy, making the entire guide rather cumbersome. When hoisting the guides onto the guide base, because there is a rolling mill crossbeam above the guide base, in order to avoid this crossbeam during each direct hoisting of the guide, it is only possible to use a tilted and angled hoisting method combined with manual pushing to successfully hoist the guides into the guide base. Specifically, the guides are structures installed before and after the roll passes to guide and support the rolled workpiece (bars and wire rods) to accurately enter and exit the passes. The guides directly affect the rolling quality and production efficiency.

[0003] However, the above-mentioned hoisting method is not only labor-intensive and time-consuming, resulting in low hoisting efficiency for the guide; it also poses safety risks during manual pushing, leading to low hoisting safety for the guide. Utility Model Content

[0004] The purpose of this utility model is to provide a mechanism and mill for hoisting guides. The mechanism uses a main rod and limiting member that work together to hoist the guides, which can directly and quickly lift the guides smoothly and efficiently, saving time and effort, increasing hoisting efficiency, and improving hoisting safety.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Mechanisms used for hoisting guides include:

[0007] The main rod includes a main rod, a first crossbar, and a second crossbar. The first crossbar and the second crossbar are spaced apart and arranged opposite to each other. The first end of the first crossbar and the first end of the second crossbar are both connected to the main rod to form a U-shaped structure. The first crossbar is located above the second crossbar. The second end of the first crossbar is used to connect a hoisting rope, which is connected to the crane. The second end of the second crossbar is used to be detachably connected to the top of the guide.

[0008] A limiting member, one end of which is connected to the side of the main rod away from the first crossbar and the second crossbar, and the other end of which can limit and clamp the guide.

[0009] Preferably, the second crossbar has an arc-shaped clearance surface at the connection point between the crossbar and the main bar on the side facing the guide, and the arc-shaped clearance surface is used to correspondingly avoid the arc-shaped protrusion structure at the top of the guide.

[0010] Preferably, the second end of the first crossbar is provided with a lifting hole for installing a lock, one end of the lifting rope is fastened to the lock, and the other end of the lifting rope is connected to the crane.

[0011] Preferably, the mechanism for hoisting the guide also includes:

[0012] A connector, one end of which is connected to the second end of the second crossbar, and the other end of which is connected to the top end of the guide, so that the second end of the second crossbar and the top end of the guide are detachably connected.

[0013] Preferably, the second end of the second crossbar is provided with a connecting through hole, and the top end of the guide is provided with a protruding ring; the connecting member includes:

[0014] A pin, which is interference-fitted through the ring and the connecting through hole.

[0015] Preferably, the diameter of the connecting through hole is the same as the inner diameter of the ring, and the outer diameter of the pin is 0.05mm to 0.08mm larger than the diameter of the connecting through hole / the inner diameter of the ring.

[0016] Preferably, the connector further includes:

[0017] The fastening nuts are threaded onto the opposite sides of the pin, one of which can abut against the outer side of the ring, and the other can abut against the outer side of the second crossbar.

[0018] Preferably, the limiting member includes:

[0019] The L-shaped rod includes a vertical rod and a third horizontal rod. One end of the vertical rod is connected to the side of the main rod away from the first and second horizontal rods. The third horizontal rod is perpendicularly connected to the other end of the vertical rod. The third horizontal rod is spaced below the second horizontal rod and extends into the interior of the guide.

[0020] The U-shaped rod includes a first rod and two second rods. The first rod passes through the main rod on the side away from the first crossbar and the second crossbar. The two second rods are respectively connected to the opposite ends of the first rod. The second rods extend toward the guide and can limit and press against the top of the guide so that the third crossbar and the two second rods limit and clamp the guide.

[0021] Preferably, the main rod and the limiting member are an integral structure.

[0022] A rolling mill includes a rolling mill body, a guide, and a guide base. The guide base is installed inside the rolling mill body, and the guide is hoisted onto the guide base based on the mechanism for hoisting the guide as described above.

[0023] The beneficial effects of this utility model are:

[0024] The mechanism for hoisting the guide in this utility model forms a U-shaped structure with good structural stability by connecting the first end of the first crossbar and the first end of the second crossbar of the main rod to the main rod. The second end of the first crossbar is connected to a hoisting rope, which is connected to a crane. The second end of the second crossbar is detachably connected to the top of the guide to ensure a secure connection between the second crossbar and the guide. One end of a limiting member is connected to the side of the main rod away from the first and second crossbars, and the other end of the limiting member clamps and limits the guide, ensuring a tight connection between the entire mechanism for hoisting the guide and the guide. The improved stability prevents the guide from swaying or shifting during the hoisting process by the overhead crane using the lifting ropes. In other words, the use of the aforementioned coordinated main members and limiting components for hoisting the guide directly avoids the mill beam above the guide base, allowing the guide to be lifted smoothly by the overhead crane and the hoisting mechanism. This eliminates the need for slanted lifting and manual pushing, reducing workload, saving time and effort, and increasing hoisting efficiency. Furthermore, it avoids the safety risks associated with manual pushing, improving the safety of the guide hoisting process.

[0025] By connecting the first crossbar, the second crossbar, and the main rod to form a U-shaped structure with good structural stability, that is, by creating a U-shaped groove between the three crossbars located above the guide, the rolling mill beam located above the guide base can be directly placed in the U-shaped groove of the main rod during the crane's transport of the entire mechanism for hoisting the guide. This allows the main rod to effectively avoid the rolling mill beam, ensuring that the guide can be directly and stably hoisted during each hoisting operation. This eliminates the need for slanted pulling and manual pushing to successfully hoist the guide onto the guide base, making the hoisting and transportation of the guide simpler, more convenient, and ensuring the stability and reliability of the hoisting and transportation process.

[0026] The rolling mill of this invention uses the aforementioned mechanism for hoisting the guide to smoothly and quickly hoist the guide onto the guide base, thereby achieving rapid hoisting and installation of the guide on the guide base, which improves the overall working efficiency and safety of the rolling mill. Attached Figure Description

[0027] Figure 1This is a structural schematic diagram of the mechanism for hoisting guides provided in an embodiment of this utility model.

[0028] In the picture:

[0029] 1-Main member; 11-Main member; 12-First crossbar; 121-Lifting hole; 122-Lock; 13-Second crossbar; 131-Arc-shaped clearance surface; 132-Connecting through hole;

[0030] 2-Limiting component; 21-L-shaped rod; 211-Vertical rod; 212-Third horizontal rod; 22-U-shaped rod; 221-First rod; 222-Second rod;

[0031] 31-Pin. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] This embodiment provides a mechanism for hoisting a guide and a rolling mill. The rolling mill includes a rolling mill body, a guide, and a guide base. The guide base is installed inside the rolling mill body. The guide is directly hoisted onto the guide base using the mechanism for hoisting the guide, thereby achieving rapid and stable hoisting and installation of the guide onto the guide base. Using this mechanism for hoisting the guide can achieve high hoisting efficiency and safety, and can ensure the stability of the guide throughout the hoisting process, thus better meeting the hoisting requirements of the guide.

[0037] It is worth noting that the above-mentioned mill body, guide, and guide base are all common structures in existing mills. The specific structure and working principle of the mill body, guide, and guide base will not be described in detail here. Please refer to the common mill structures in the existing technology.

[0038] Specifically, such as Figure 1 As shown, the mechanism for hoisting the guide includes a main rod 1 and a limiting member 2. The main rod 1 includes a main rod 11, a first crossbar 12 and a second crossbar 13. The first crossbar 12 and the second crossbar 13 are spaced apart and opposite to each other. The first end of the first crossbar 12 and the first end of the second crossbar 13 are both connected to the main rod 11 to form a U-shaped structure. The first crossbar 12 is located above the second crossbar 13. The second end of the first crossbar 12 is used to connect a hoisting rope, which is connected to the trolley. The second end of the second crossbar 13 is used to detachably connect to the top of the guide. One end of the limiting member 2 is connected to the side of the main rod 11 away from the first crossbar 12 and the second crossbar 13. The other end of the limiting member 2 can limit and clamp the guide.

[0039] The mechanism for hoisting the guide in this embodiment differs from existing technologies in that it changes the specific hoisting method. By connecting the first end of the first crossbar 12 and the first end of the second crossbar 13 of the main rod 1 to the main rod 11 to form a U-shaped structure with better structural stability, and connecting the second end of the first crossbar 12 to a hoisting rope connected to the trolley, while detachably connecting the second end of the second crossbar 13 to the top of the guide, the connection between the second crossbar 13 and the guide is ensured to be secure. One end of the limiting member 2 is connected to the side of the main rod 11 away from the first crossbar 12 and the second crossbar 13, and the other end of the limiting member 2 clamps and limits the guide, thus ensuring the overall stability of the hoisting mechanism. The connection between the lifting mechanism and the guide is more secure, preventing the guide from swaying or shifting during the lifting process by the crane using the hoisting rope. In other words, using the aforementioned cooperating main member 1 and limiting member 2 to lift the guide directly avoids the mill beam above the guide base, allowing the guide to be lifted smoothly by the crane and the lifting mechanism. This eliminates the need for slanted lifting and manual pushing, reducing workload, saving time and effort, and increasing lifting efficiency. Furthermore, it avoids the safety risks associated with manual pushing, improving the safety of the guide's lifting.

[0040] It is worth noting that the mechanism for hoisting the guide in this embodiment has already been put into use in the workshop of the bar and wire rod factory, and the actual hoisting effect is good. Through on-site tracking and observation, it can be seen that only one worker can operate the overhead crane to easily hoist the guide onto the guide base. Moreover, the guide is relatively stable throughout the entire hoisting process, which facilitates the subsequent direct fixing and installation of the guide and the guide base. Specifically, the overhead crane can be a common overhead crane or hoist in the prior art.

[0041] It is worth noting that the above-mentioned connection of the first crossbar 12, the second crossbar 13, and the main rod 11 of the main rod 1 to form a U-shaped structure with good structural stability allows the first crossbar 12, the second crossbar 13, and the main rod 11 to form a U-shaped groove spaced above the guide. This allows the mill beam located above the guide base to be placed directly in the U-shaped groove of the main rod 1 during the crane hoisting of the entire mechanism and the guide. The main rod 1 can effectively avoid the mill beam, ensuring that the guide can be directly and stably hoisted during each hoisting process. It eliminates the need for tilting and lifting with manual pushing to successfully hoist the guide into the guide base, making the hoisting and transportation of the guide simpler and more convenient, and ensuring the stability and reliability of the hoisting and transportation of the guide.

[0042] Furthermore, such as Figure 1As shown, an arc-shaped clearance surface 131 is provided at the connection position between the second crossbar 13 and the main bar 11 on the side facing the guide. The arc-shaped clearance surface 131 is used to correspondingly avoid the arc-shaped protrusion structure at the top of the guide, so as to avoid mutual interference between the second crossbar 13 and the main bar 11 and the guide. Here, the specific shape and size of the arc-shaped clearance surface 131 are not limited, as long as the arc-shaped clearance surface 131 matches the arc-shaped protrusion structure.

[0043] Specifically, such as Figure 1 As shown, a lifting hole 121 is provided at the second end of the first crossbar 12. The lifting hole 121 is used to install a locking buckle 122. One end of the lifting rope is fastened to the locking buckle 122, and the other end of the lifting rope is connected to the crane. This allows the lifting rope to be directly installed to the second end of the first crossbar 12 via the locking buckle 122, making the installation of the lifting rope simple and convenient, while ensuring the stability of the connection between the lifting rope and the first crossbar 12. Here, both the lifting rope and the locking buckle 122 can adopt common structures in the prior art. Figure 1 The image is only for simple illustration of latch 122 and does not represent the specific structure of latch 122.

[0044] Furthermore, the mechanism for hoisting the guide also includes a connector, one end of which is connected to the second end of the second crossbar 13, and the other end of which is connected to the top of the guide, so that the second end of the second crossbar 13 and the top of the guide can be detachably connected; on the one hand, this ensures quick assembly and disassembly between the second crossbar 13 and the guide; on the other hand, it ensures the stability of the connection between the second crossbar 13 and the guide, so that the mechanism for hoisting the guide and the guide can be connected to form an integral structure.

[0045] Specifically, such as Figure 1 As shown, a connecting through hole 132 is provided at the second end of the second crossbar 13, and a ring is protruding at the top of the guide. The connector includes a pin 31, which passes through the ring and the connecting through hole 132 with an interference fit, so as to realize quick disassembly and assembly and stable connection between the second crossbar 13 and the guide. Furthermore, using the pin 31 to directly connect the second crossbar 13 and the guide can reduce the connection cost and make the connection operation between the second crossbar 13 and the guide simple and convenient. That is, it is only necessary to directly insert the pin 31 without any other additional connection operation.

[0046] Furthermore, the diameter of the connecting through hole 132 is the same as the inner diameter of the ring, and the outer diameter of the pin 31 is 0.05mm~0.08mm larger than the diameter of the connecting through hole 132 / the inner diameter of the ring, so that the pin 31 can pass through the ring and the connecting through hole 132 with an interference fit, and can ensure that while the pin 31 can be easily inserted into the ring and the connecting through hole 132, the connection between the second crossbar 13 and the guide is more stable.

[0047] Specifically, the connector also includes fastening nuts. A fastening nut is threaded onto each of the opposite sides of the pin 31. One fastening nut abuts against the outer surface of the ring, and the other fastening nut abuts against the outer surface of the second crossbar 13. This allows the pin 31 to pass through the ring and the connecting through hole 132 via an interference fit, and then the ring and the second crossbar 13 are locked in place by the two fastening nuts, thereby further ensuring the stability of the connection between the second crossbar 13 and the guide. In other embodiments, the second crossbar 13 and the guide can be connected only by an interference fit using the pin 31, without using the fastening nuts; this is not specifically limited here.

[0048] Furthermore, such as Figure 1 As shown, the limiting member 2 includes an L-shaped rod 21 and a U-shaped rod 22; wherein, the L-shaped rod 21 includes a vertical rod 211 and a third horizontal rod 212, one end of the vertical rod 211 is connected to the side of the main rod 11 away from the first horizontal rod 12 and the second horizontal rod 13, and the third horizontal rod 212 is perpendicularly connected to the other end of the vertical rod 211 to form the L-shaped rod 21. The third horizontal rod 212 is spaced below the second horizontal rod 13 and extends into the interior of the guide. At this time, the vertical rod 211 is spaced outside the guide to ensure that there is no mutual interference between the vertical rod 211 and the guide; the U-shaped rod 22 includes a first rod 221 and two second rods 222. The first rod 221 passes through the side of the main rod 11 away from the first horizontal rod 12 and the second horizontal rod 13, and the two... The second rods 222 are respectively connected to the opposite ends of the first rod 221 to form U-shaped rods 22 with the opening facing downward. That is, the U-shaped rods 22 are spaced apart on one side of the vertical rod 211 and spaced apart above the third horizontal rod 212, so as to ensure that the U-shaped rods 22 and the L-shaped rods 21 do not interfere with each other. The second rods 222 extend toward the guide and can limit and press against the top of the guide, so that the third horizontal rod 212 and the two second rods 222 cooperate to limit and clamp the guide. Furthermore, the third horizontal rod 212 and the two second rods 222, through mutual cooperation, can also provide a certain positioning function for the guide, thereby ensuring the guidance and accuracy of the installation position between the mechanism used to hoist the guide and the guide.

[0049] Specifically, when the entire mechanism for hoisting the guide is lifted upwards by the hoisting rope, the interference fit between the pin 31 and the ring and the second crossbar 13 ensures the stability of the connection between the second crossbar 13 and the guide. At the same time, the synergistic effect between the third crossbar 212 inserted inside the guide and the two second bars 222 can limit and clamp the guide, thereby ensuring the stability of the connection between the limiting member 2 and the guide. That is, the mechanism for hoisting the guide in this embodiment can create a limiting connection effect with the guide at two locations, thereby ensuring the stability of the connection between the entire mechanism for hoisting the guide and the guide. This avoids the problem of the mechanism for hoisting the guide and the guide separating from each other during the hoisting process, thus facilitating the smooth hoisting of the guide.

[0050] Furthermore, such as Figure 1 As shown, the main rod 1 and the limiting member 2 are an integral structure. That is, the main rod 11, the first crossbar 12, the second crossbar 13, the L-shaped rod 21, and the U-shaped rod 22 are an integral structure. This makes the entire mechanism used for hoisting the guide easier and more convenient to manufacture, reduces manufacturing costs, and ensures the stability and reliability of the connection between the main rod 11, the first crossbar 12, the second crossbar 13, the L-shaped rod 21, and the U-shaped rod 22. Specifically, welding can be used to make the main rod 1 and the limiting member 2 an integral structure.

[0051] The mechanism for hoisting the guide in this embodiment, such as Figure 1 As shown, by setting up the main rod 1 and the limiting member 2 that cooperate with each other, and making the main rod 1 include a U-shaped main rod 11, a first crossbar 12 and a second crossbar 13, and the limiting member 2 includes an L-shaped rod 21 and a U-shaped rod 22 that are independently arranged, the layout of the main rod 11, the first crossbar 12, the second crossbar 13, the L-shaped rod 21 and the U-shaped rod 22 is more reasonable and compact. The overall structure is simple and beautiful and will not affect the structural strength. It can ensure the connection stability and hoisting stability of the guide while occupying a small area, realize the rapid and stable hoisting of the guide, and ensure hoisting efficiency and hoisting safety.

[0052] The specific working process of the mechanism used for hoisting the guide in this embodiment is as follows:

[0053] First, the third crossbar 212 is inserted into the interior of the guide. At this time, the two second bars 222 press against the top of the guide. That is, the two second bars 222 and the third crossbar 212 are placed on opposite sides of the top plate of the guide so that the two second bars 222 and the third crossbar 212 limit and clamp the guide. Then, the pin 31 is inserted through the ring and the connecting through hole 132 to stably connect the guide and the second crossbar 13. At this time, the arc-shaped relief surface 131 is placed above the arc-shaped protrusion structure at the top of the guide.

[0054] Then, the hoisting rope is connected to the first crossbar 12 via the locking buckle 122, and the crane is started so that the crane can smoothly lift the mechanism for hoisting the guide and the guide as a whole via the hoisting rope, and move it directly to the guide base; then the guide and the guide base are fixedly installed, thus realizing the smooth and convenient hoisting of the guide and the quick installation of the guide and the guide base.

[0055] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A mechanism for hoisting guides, characterized in that, include: The main rod (1) includes a main rod (11), a first crossbar (12) and a second crossbar (13). The first crossbar (12) and the second crossbar (13) are spaced apart and arranged opposite to each other. The first end of the first crossbar (12) and the first end of the second crossbar (13) are both connected to the main rod (11) to form a U-shaped structure. The first crossbar (12) is located above the second crossbar (13). The second end of the first crossbar (12) is used to connect a hoisting rope. The hoisting rope is connected to the crane. The second end of the second crossbar (13) is used to detachably connect to the top of the guide. The limiting member (2) has one end connected to the side of the main rod (11) away from the first crossbar (12) and the second crossbar (13), and the other end of the limiting member (2) can limit and clamp the guide.

2. The mechanism for hoisting the guide according to claim 1, characterized in that, The second crossbar (13) is provided with an arc-shaped avoidance surface (131) at the connection position between the guide and the main bar (11) on the side facing the guide. The arc-shaped avoidance surface (131) is used to avoid the arc-shaped protrusion structure at the top of the guide.

3. The mechanism for hoisting a guide vane according to claim 1, characterized in that, The second end of the first crossbar (12) is provided with a lifting hole (121), the lifting hole (121) is used to install a lock (122), one end of the lifting rope is fastened to the lock (122), and the other end of the lifting rope is connected to the crane.

4. The mechanism for hoisting a guide according to any one of claims 1-3, characterized in that, The mechanism for hoisting the guide also includes: A connector, one end of which is connected to the second end of the second crossbar (13) and the other end of which is connected to the top end of the guide, so that the second end of the second crossbar (13) is detachably connected to the top end of the guide.

5. The mechanism for hoisting the guide according to claim 4, characterized in that, The second end of the second crossbar (13) is provided with a connecting through hole (132), and the top end of the guide is provided with a ring; the connecting member includes: A pin (31) is inserted through the ring and the connecting through hole (132).

6. The mechanism for hoisting the guide according to claim 5, characterized in that, The diameter of the connecting through hole (132) is the same as the inner diameter of the ring, and the outer diameter of the pin (31) is 0.05mm~0.08mm larger than the diameter of the connecting through hole (132) / the inner diameter of the ring.

7. The mechanism for hoisting a guide vane according to claim 5, characterized in that, The connector also includes: The fastening nuts are threaded onto the opposite sides of the pin (31), one of the fastening nuts being able to abut against the outer side of the ring, and the other fastening nut being able to abut against the outer side of the second crossbar (13).

8. The mechanism for hoisting a guide according to any one of claims 1-3, characterized in that, The limiting member (2) includes: L-shaped rod (21), the L-shaped rod (21) includes a vertical rod (211) and a third horizontal rod (212), one end of the vertical rod (211) is connected to the side of the main rod (11) away from the first horizontal rod (12) and the second horizontal rod (13), the third horizontal rod (212) is perpendicularly connected to the other end of the vertical rod (211), the third horizontal rod (212) is spaced below the second horizontal rod (13) and extends into the interior of the guide; The U-shaped rod (22) includes a first rod (221) and two second rods (222). The first rod (221) passes through the main rod (11) on the side away from the first crossbar (12) and the second crossbar (13). The two second rods (222) are respectively connected to the opposite ends of the first rod (221). The second rods (222) extend toward the guide and can limit and press against the top of the guide so that the third crossbar (212) and the two second rods (222) limit and clamp the guide.

9. The mechanism for hoisting a guide according to any one of claims 1-3, characterized in that, The main rod (1) and the limiting member (2) are an integral structure.

10. A rolling mill, characterized in that, It includes a rolling mill body, a guide, and a guide base. The guide base is installed inside the rolling mill body, and the guide is hoisted onto the guide base based on the mechanism for hoisting the guide as described in any one of claims 1-9.

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