Mine shaft tower crane hoisting method and mine shaft tower crane

Abstract

The application provides a mine shaft tower travelling crane hoisting method and a mine shaft tower travelling crane. The method comprises the following steps: reserving a hoisting hole when the shaft tower is capped, and arranging a primary crown wheel platform above the hoisting hole; hoisting the track beam and the travelling crane beam through the primary crown wheel platform, and installing the track on the track beam; re-twisting the primary crown wheel platform, and arranging a secondary crown wheel platform at the reserved hole at the center position of the top plate of the shaft tower; hoisting the travelling crane beam onto the track through the secondary crown wheel platform; re-twisting the secondary crown wheel platform, and re-arranging a tertiary crown wheel platform above the hoisting hole; and hoisting the walking trolley onto the travelling crane beam through the tertiary crown wheel platform. The application can simply and quickly realize the hoisting of the mine shaft tower travelling crane.

Description

Technical Field

[0001] This invention relates to the field of mining construction technology, and more specifically, to a method for hoisting a mine shaft crane and a mine shaft crane. Background Technology

[0002] As the main hoisting equipment for the hoisting and installation of friction hoists, the installation of overhead cranes plays a pioneering role in the installation process of metallurgical and mining equipment.

[0003] Currently, the main difficulty and focus of installing overhead cranes in shaft towers lies in the hoisting process. While large mobile cranes are typically used as the main lifting equipment for installing overhead cranes in low-rise buildings, they are difficult to employ in shaft tower construction. This is primarily because shaft towers are quite tall, ranging from 40-50 meters to 80-90 meters, requiring a large crane tonnage, which is neither feasible nor economical. Summary of the Invention

[0004] In view of the above problems, the purpose of this invention is to provide a method for hoisting mine shaft cranes and a mine shaft crane, so as to solve the problem that existing shaft cranes are not easy to hoist.

[0005] The present invention provides a method for hoisting a mine shaft crane, comprising: reserving a hoisting hole when the shaft is capped, and arranging a primary sheave platform above the hoisting hole; hoisting the track beam and the crane beam using the primary sheave platform, and installing the track on the track beam; modifying the primary sheave platform and arranging a secondary sheave platform at the reserved hole at the center of the shaft's top plate; hoisting the crane beam onto the track using the secondary sheave platform; modifying the secondary sheave platform and re-arranging a tertiary sheave platform above the hoisting hole; and hoisting the traveling trolley onto the crane beam using the tertiary sheave platform.

[0006] Alternatively, an optional technical solution is to use a sheave platform to hoist the track beam, which includes: hoisting the track beam from the ground to the shaft winch hall; hoisting the track beam in the shaft winch hall onto the pre-treated foundation pad and temporarily fixing it.

[0007] Alternatively, an optional technical solution is to hoist the track beam in the well tower winch hall onto the pre-treated foundation pad, including using the hoisting rings embedded at both ends of the track beam and located on the front of the bracket or the reserved holes or small masts on the top plate to hang chain hoisting to simultaneously lift both sides of the track beam onto the foundation pad.

[0008] Alternatively, an optional technical solution is to hoist the gantry beam using a single sheave platform, including: after the track beam is installed, transporting one end of the gantry beam to the hoisting hole of the shaft tower, lowering the stabilizing rope to the ground via the moving pulley block, and tying it to the gantry beam; and hoisting the gantry beam into the shaft tower winch hall.

[0009] Alternatively, an optional technical solution is to hoist the trolley beam onto the track using a secondary sheave platform, including: pre-positioning one of the trolley beams on the track and temporarily fixing it to one side; hoisting the other trolley beam and the intermediate short beam; assembling the two beams and the intermediate beam into one unit on the track and pushing it to one side of the hoisting hole of the shaft tower to allow the traveling trolley to move aside.

[0010] In addition, an alternative technical solution is to use a three-stage sheave platform to hoist the traveling trolley onto the crane beam, including: pre-measuring the maximum external dimensions of the traveling trolley and the maximum allowable size of the hoisting hole; when the size of the hoisting hole meets the requirements for flat-end hoisting, the flat-end hoisting method is directly adopted; when the size of the hoisting hole does not meet the requirements for flat-end hoisting, the method of first vertical hoisting and then flat-end hoisting onto the crane beam is adopted.

[0011] Alternatively, when using a flat-end lifting method, lifting points or lifting rings can be set at the four corners of the traveling trolley, or steel wire ropes can be passed through the gaps between the four wheels of the traveling trolley and then gathered above the traveling trolley to form a four-corner flat-end lifting method.

[0012] In addition, an alternative technical solution is that the height between the top plate of the crane beam and the top plate of the well tower is not less than the height of the traveling trolley.

[0013] In addition, an alternative technical solution is to weld protective round tubes at the corners of both the traveling trolley and the main beam.

[0014] On the other hand, the present invention also provides a mine shaft crane, which is hoisted using the above-mentioned mine shaft crane hoisting method.

[0015] Utilizing the aforementioned method for hoisting mine shaft towers and the mine shaft tower crane itself, a hoisting hole is pre-reserved during the tower's capping. A primary sheave platform is then positioned above this hole to hoist the track beam and the crane beam. Tracks are then installed on the track beams. The primary sheave platform is then modified, and a secondary sheave platform is positioned at the pre-reserved hole in the center of the tower's top plate. The crane beam is then hoisted onto the track using the secondary sheave platform. The secondary sheave platform is then modified again, and a tertiary sheave platform is repositioned above the hoisting hole. The trolley is then hoisted onto the crane beam using the tertiary sheave platform. This method fully utilizes the building's structural integrity, eliminating the need for large cranes. It is not only simple and fast to operate but also low-cost and widely applicable.

[0016] To achieve the foregoing and related objectives, one or more aspects of the invention include the features that will be described in detail below. The following description and accompanying drawings illustrate certain exemplary aspects of the invention. However, these aspects indicate only a few of the various ways in which the principles of the invention can be used. Furthermore, the invention is intended to encompass all such aspects and their equivalents. Attached Figure Description

[0017] Other objects and results of the invention will become more apparent and readily understood with reference to the following description taken in conjunction with the accompanying drawings. In the drawings:

[0018] Figure 1 This is a flowchart of a mine shaft crane hoisting method according to an embodiment of the present invention.

[0019] In all the accompanying drawings, the same reference numerals indicate similar or corresponding features or functions. Detailed Implementation

[0020] In the following description, numerous specific details are set forth for illustrative purposes and to provide a thorough understanding of one or more embodiments. However, it will be apparent that these embodiments may also be implemented without these specific details. In other instances, well-known structures and devices are shown in block diagram form for ease of description of one or more embodiments.

[0021] In the description of this invention, it should be understood that the following terms, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the content or structure of this invention.

[0022] To describe in detail the mine shaft crane hoisting method of the present invention, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] Figure 1 A flowchart of a mine shaft crane hoisting method according to an embodiment of the present invention is shown.

[0024] like Figure 1 As shown, the mine shaft crane hoisting method of this embodiment includes:

[0025] S100: When the well tower is capped, a hoisting hole is reserved, and a sheave platform is arranged above the hoisting hole;

[0026] S200: The track beam and the trolley beam are hoisted using a single sheave platform, and the track is installed on the track beam;

[0027] S300: Modify the primary sheave platform and install a secondary sheave platform at the reserved hole in the center of the top plate of the shaft tower;

[0028] S400: The main beam of the gantry crane is hoisted onto the track using a secondary sheave platform;

[0029] S500: Modify the secondary sheave platform and reposition the tertiary sheave platform above the hoisting hole;

[0030] 600: The traveling trolley is hoisted onto the overhead crane beam via a three-stage sheave platform.

[0031] Among these, the choice of rope exit point has a significant impact on hoisting operations, and there are two rope exit methods: rope exiting from outside the hoist tower and rope exiting from inside the hoist tower. The rope exiting from outside the hoist tower is characterized by the rope ascending from the outside of the hoist tower to the guide wheel of the sheave platform on the top slab of the tower, then passing through the pulley system. The rope does not affect the effective hoisting hole size. The disadvantage is that the rope exit angle of the stable car is relatively large, requiring a high degree of stability in the stable car foundation, necessitating special fixing. The rope exiting from inside the hoist tower, on the other hand, involves the stable car exiting horizontally, passing through the ground guide pulley of the hoisting hole in the hoist tower, then ascending to the sheave platform, and finally passing through the pulley system. This arrangement allows the stable car to bear conventional loads. The drawback is that the rope needs to pass through one corner of the hoisting hole in the hoist tower, which somewhat affects the effective hoisting space of the hoisting hole.

[0032] Therefore, an appropriate rope exit point can be selected based on specific circumstances to achieve the optimal hoisting method. Furthermore, to ensure stable hoisting, a small towing trolley can be placed behind the hoisting hole inlet of the shaft to reduce inertial load during lifting. Additionally, a trolley and multi-directional chain hoists should be installed in the winch hall for equipment towing.

[0033] The preparatory work before hoisting mainly includes:

[0034] Firstly, the installation of a hoist tower typically requires two main hoisting points. One is located directly above the hoisting opening on the hoist tower, used to lift the equipment from the ground to the winch hall. This hoisting opening should be pre-reserved during the capping of the hoist tower to avoid affecting the structure. The opening should ideally be located at the center of the hoisting opening, while avoiding the civil engineering beams and considering the rope exit point, and also allowing sufficient space for the hoist beam to move horizontally into the platform when lifted to the winch hall. The size of the opening must be sufficient to accommodate the operation of the pulley block.

[0035] Secondly, another hoisting hole is located at the center of the top plate, used for hoisting the overhead crane onto the track beam and the traveling trolley onto the overhead crane beam. In addition to meeting the requirements of the above-mentioned holes, this hoisting hole must also allow the pulley and hook to pass through when the height of the traveling trolley is insufficient.

[0036] In one specific embodiment of the present invention, the process of hoisting the track beam using a sheave platform includes: hoisting the track beam from the ground to the shaft winch hall; hoisting the track beam in the shaft winch hall onto a pre-treated foundation pad and temporarily fixing it. Then, hoisting the track beam in the shaft winch hall onto the pre-treated foundation pad involves using hoisting rings embedded at both ends of the track beam and located on the corbels, or using pre-drilled holes in the top plate or a small mast to simultaneously hoist both sides of the track beam onto the foundation pad.

[0037] In addition, the crane beam is hoisted using a sheave platform, including: after the track beam is installed, one end of the crane beam is transported to the hoisting hole of the shaft tower, the stabilizing rope is lowered to the ground via the moving pulley block and tied to the crane beam; the crane beam is then hoisted into the shaft tower winch hall.

[0038] In addition, the crane beam is hoisted onto the track using the secondary sheave platform, including: placing one of the crane beams on the track in advance and pushing it to one side for temporary fixation; hoisting the other crane beam and the middle short beam; assembling the two beams and the middle beam into one unit on the track and pushing it to one side of the hoisting hole of the well tower to make way for the hoisting of the traveling trolley.

[0039] As a specific example, the traveling trolley is hoisted onto the crane beam using a three-stage sheave platform, including: pre-measuring the maximum external dimensions of the traveling trolley and the maximum allowable passage size of the hoisting hole; when the size of the hoisting hole meets the requirements for flat-end hoisting, the flat-end hoisting method is directly adopted; when the size of the hoisting hole does not meet the requirements for flat-end hoisting, the method of first vertical hoisting and then flat-end hoisting onto the crane beam is adopted.

[0040] In addition, when using the flat-end hoisting method, hoisting points or hoisting rings are set at the four corners of the traveling trolley, or steel wire ropes are passed through the gaps between the four wheels of the traveling trolley and then gathered at the top of the traveling trolley to form a four-corner flat-end hoisting.

[0041] In addition, the height between the top plate of the crane beam and the top plate of the well tower shall not be less than the height of the traveling trolley.

[0042] In one specific embodiment of the present invention, a method for hoisting a mine shaft crane includes:

[0043] 1. A sheave platform is installed above the hoisting hole for hoisting equipment from the ground to the winch hall of the shaft tower.

[0044] Specifically, the first step in the hoisting and installation of the overhead crane is the installation of the track beams. The track beams are the supporting structure for the entire crane's movement, typically composed of multiple beams. They are relatively lightweight and can be directly hoisted to the winch hall of the shaft tower. When hoisting from the winch hall to the brackets, pre-embedded hoisting rings at both ends of the beams and directly above the brackets, or pre-drilled holes in the roof slab, or small masts can be used to attach chain hoists, lifting simultaneously from both sides. Once in place, they are temporarily secured to a pre-prepared foundation pad. After all track beams are hoisted, the entire structure is adjusted and fixed, and finally, the tracks are installed.

[0045] 2. The second step in overhead crane hoisting is the hoisting of the overhead crane beams. The overhead crane beams are the main structure of the entire crane, generally composed of two or four beams, and are quite long. The hoisting point for the overhead crane beams is usually selected slightly off-center. This is to ensure that the beams can pass smoothly through the hoisting holes after being lifted and tilted, and also to ensure sufficient distance at both ends for the trolley to move into the platform after the beams are hoisted to the winch hall. The hoisting point should avoid damaging the equipment as much as possible. Any necessary openings should be reinforced afterward, or welding can be used for the hoisting points. In short, the hoisting point must be safe, reliable, and feasible.

[0046] The hoisting point is located slightly off-center. Holes are drilled in the walkway slab to thread ropes through, round pipes are welded to the corners for protection, and thick-skinned seamless steel pipes are welded onto the beams as tripping points.

[0047] Before hoisting, one end of the overhead crane beam is transported to the hoisting hole of the shaft tower. The stabilizing rope is lowered to the ground via the moving pulley block, and the rope sling is secured before hoisting begins. The hoisting process should be slow, and if conditions permit, the stabilizing car should be used for towing. While hoisting, observe the hoisting point and surrounding area for any abnormalities or obstructions until the entire overhead crane beam is lifted. After hoisting, inspect the hoisting point, sheave platform, stabilizing car foundation, and connections. If no abnormalities are found, continue hoisting upwards. During the hoisting process, personnel must synchronize with the equipment, observing at each floor level to handle any potential obstructions. After hoisting to the shaft tower winch hall, coordinate with the pre-positioned small stabilizing car and chain hoist to horizontally lower the beam into the winch hall, and then proceed with the hoisting and towing of the other beam.

[0048] 3. After the main beam is hoisted, the sheave platform is modified. The sheave platform is placed at the reserved hole in the center of the top plate of the shaft tower for hoisting and installing the crane main beam onto the track.

[0049] When hoisting the crane beam onto the track, the hoisting point should be selected at the center of the beam so that both ends can be on the track at the same time. The hoisting direction should be slightly angled to the vertical direction of the two sides of the track. This is to ensure that the beam can be smoothly hoisted above the track beam, and that the beam is rotated after reaching the height so that the wheels can be quickly and smoothly placed on the track.

[0050] The lifting process must be smooth. After placing one main beam on the track, push it to one side and fix it temporarily. Then lift the other main beam and the middle short beam. After assembling the two main beams into one piece on the track, push them to one side of the central lifting hole of the well tower so that the next step of lifting the traveling trolley can be carried out.

[0051] In addition, the traveling trolley, due to its heaviest weight and highest installation height, becomes the key and also the most difficult part of the entire hoisting process. Before hoisting, the winch still needs to be modified, and the sheave platform needs to be rearranged directly above the hoisting hole.

[0052] 4. The first step in hoisting the traveling trolley is to determine the hoisting method. While hoisting the trolley horizontally onto the crane beam is ideal, not all hoisting holes allow the trolley to pass horizontally. Therefore, before hoisting, the maximum external dimensions of the trolley and the maximum allowable passage size of the hoisting hole must be carefully measured to determine the optimal hoisting method. Sometimes, if the hoisting hole size is too small to accommodate a horizontal hoisting method, a method of first vertical hoisting and then horizontal hoisting onto the crane beam can be adopted. That is, vertical hoisting is used from the ground to the winch hall of the shaft tower, and horizontal hoisting is used from the winch hall to the crane beam.

[0053] When the trolley is at the flat end, the lifting points on the trolley should be selected at the four corners, or four lifting rings should be welded, or steel wire ropes should be passed through the gaps between the four wheels and then converged to the top to form a four-corner lifting. The lifting distance after the ropes are tied should be compared with the height from the trolley beam to the top plate of the shaft tower in advance to ensure that the trolley has enough height to reach the trolley beam.

[0054] In addition, when hoisting the vertical side first and then the horizontal side of the trolley beam, the hoisting point should be selected on the frame beam of the trolley. It should be noted that the connection between the rollers, reducers and other equipment and components on the frame beam of the trolley and the trolley beam mainly bears the horizontal force. After being erected, the additional vertical load is large, so they should be removed in advance or fixed with steel wire ropes and chains.

[0055] Similarly, weld round pipe protective ropes at all corners. The lifting of the trolley should be done slowly, dragging it as you lift to prevent sudden movements. After lifting, check that all stress points are stable; if everything is in order, continue upwards. When leveling the end, the traveling trolley can be directly lifted onto the overhead crane beam; when erecting first and then leveling, the lifting point must be changed in the winch hall of the shaft to achieve the conditions for level lifting.

[0056] 5. After the hoisting point is moved from the hoisting point to the center hoisting point of the shaft tower, the traveling trolley is moved directly below the hoisting point. At this time, the overhead crane beam has been pushed to one side, leaving enough space for the trolley to be lifted. The traveling trolley must be hoisted horizontally. Before hoisting the trolley, recheck the height from the overhead crane beam track to the top of the shaft tower to ensure that the trolley is hoisted into place in one go. Slowly hoist the trolley horizontally until it is above the overhead crane beam. Personnel should stand at both ends of the beam to observe the height. Stop when all four wheels of the trolley have passed the overhead crane beam track. Use the pre-attached chain hoist to pull the overhead crane beam, making it slowly move closer to the track until it is directly below the traveling trolley. Lower the traveling trolley onto the overhead crane beam track slowly, aligning the wheel grooves with the track before lowering it.

[0057] 6. Finally, after the trolley is installed, continue to hoist and install other small components such as the cab and railings; install the conductor rail, lay the cable, connect the wires, debug, and finally wind the rope.

[0058] Corresponding to the above-mentioned mine shaft crane hoisting method, the present invention also provides a mine shaft crane, which is hoisted using the above-mentioned mine shaft crane hoisting method.

[0059] It should be noted that the above embodiments of the mine shaft crane can be referred to the description in the embodiments of the mine shaft crane hoisting method, and will not be repeated here.

[0060] The above-mentioned method for hoisting mine shaft towers using overhead cranes involves arranging a sheave platform with two openings on the top roof of the tower and installing a stable pulley system on the ground. This method makes full use of the building's structure, saves the cost of large cranes, and is simple, easy to implement, stable, and reliable.

[0061] The method for hoisting a mine shaft crane and the mine shaft crane according to the present invention have been described above by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various modifications can be made to the method for hoisting a mine shaft crane and the mine shaft crane proposed in the present invention without departing from the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the contents of the appended claims.

Claims

1. A method for hoisting a mine shaft tower using a crane, characterized in that, include: When the well tower is capped, a hoisting hole is reserved, and a sheave platform is arranged above the hoisting hole; The track beam and the trolley beam are hoisted using the aforementioned sheave platform, and the track is installed on the track beam. The primary sheave platform is modified, and a secondary sheave platform is arranged at the reserved hole in the center of the top plate of the well tower; The gantry beam is hoisted onto the track using the secondary sheave platform; The secondary sheave platform was modified and a tertiary sheave platform was rearranged above the hoisting hole; The traveling trolley is hoisted onto the crane beam via the three-wheel platform; The process of hoisting the track beam using the aforementioned sheave platform includes: The track beam was hoisted from the ground to the winch hall of the shaft tower; The track beam in the shaft winch hall is hoisted onto the pre-treated foundation pad and temporarily secured; the hoisting of the track beam in the shaft winch hall onto the pre-treated foundation pad includes: Using lifting rings pre-embedded at both ends of the track beam and located on the front of the corbel, or pre-drilled holes in the top plate, or a small mast to attach a chain hoist, the two sides of the track beam are simultaneously lifted upwards onto the foundation pad; the lifting of the crane beam via the primary sheave platform includes: After the track beam is installed, one end of the trolley beam is transported to the hoisting hole of the well tower, and the stabilizing rope is lowered to the ground through the moving pulley block and tied to the trolley beam. The crane beam is hoisted into the well tower winch hall; The process of hoisting the gantry beam onto the track via the secondary sheave platform includes: One of the main beams of the crane beam is pre-placed on the track and pushed to one side for temporary fixation; Hoist the other main beam and the middle short beam of the crane beam; The two main beams and the intermediate beam are assembled into one piece on the track and pushed to one side of the hoisting hole of the well tower to allow space for the hoisting of the traveling trolley; the hoisting of the traveling trolley onto the traveling beam via the three-stage sheave platform includes: The maximum external dimensions of the traveling trolley and the maximum allowable passage size of the hoisting hole are measured in advance; When the size of the lifting hole meets the requirements for flat-end lifting, the flat-end lifting method shall be directly adopted. When the size of the hoisting hole does not meet the requirements for horizontal hoisting, the method of first vertical hoisting and then horizontal hoisting of the crane beam shall be adopted.

2. The method for hoisting a mine shaft tower using a traveling crane as described in claim 1, characterized in that, When using the flat-end hoisting method, hoisting points or hoisting rings are set at the four corners of the traveling trolley, or steel wire ropes are passed through the gaps between the four wheels of the traveling trolley and then gathered above the traveling trolley to form a four-corner flat-end hoisting.

3. The method for hoisting a mine shaft tower using a traveling crane as described in claim 2, characterized in that, The height between the top plate of the overhead crane beam and the top plate of the well tower shall not be less than the height of the traveling trolley.

4. The method for hoisting a mine shaft tower using a traveling crane as described in claim 1, characterized in that, Protective round tubes are welded to the corners of both the traveling trolley and the traveling beam.

5. A mine shaft crane, characterized in that, The hoisting is carried out using the mine shaft crane hoisting method as described in any one of claims 1 to 4.

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