Inclined shaft construction rack

Abstract

The utility model belongs to the technical field of tunnel excavation, and particularly provides an inclined shaft construction rack. The inclined shaft construction rack comprises a frame assembly, a telescopic mechanism, a slagging-off mechanism and a well lid, the telescopic mechanism is installed on the frame assembly, the slagging-off mechanism is installed at one end of the telescopic mechanism, a well lid winch used for lifting and placing the well lid is arranged on the frame assembly, and an avoiding position and a covering position used for covering the slag slipping pilot tunnel are arranged in the moving stroke of the well lid. When the well lid is located at the avoiding position, the whole well lid is located on the inclined upper side of the telescopic mechanism. In the upward moving process of the well lid, the whole well lid is away from the tunnel hole wall (the hole wall below the telescopic mechanism in an inclined mode) and cannot interfere with the tunnel hole wall, manual auxiliary adjustment of the posture of the well lid is not needed, and safety is higher. In addition, the well lid does not occupy the space of the inclined lower side of the telescopic mechanism at the moment, the slagging-off mechanism can conveniently achieve the slagging-off action in a larger range, and the good slagging-off effect is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel excavation, in particular to an inclined shaft construction stand. Background Art

[0002] With the rise of pumped storage power stations in the hydropower industry, a large number of inclined shafts need to be excavated for ventilation, drainage, pressure pipeline laying and transportation. At present, the commonly used method for inclined shaft excavation construction is to first use a reverse well drilling rig to drill a slag guide tunnel, and then use the drilling and blasting method to expand the excavation construction. The rock slag produced by the blasting can slide down along the slag guide tunnel. When carrying out the expansion operation, a construction rig is required. The construction rig generally includes a multi-layer construction platform. Workers can perform drilling, charging and other operations on the construction platform. During construction, the construction rig is towed by the traction winch (winch) located at the entrance of the inclined shaft. As the wire rope of the traction winch is retracted and released, the construction rig can move along the wall of the inclined shaft.

[0003] In order to improve the efficiency of slag removal and reduce the labor intensity of workers, the utility model patent document with the authorization announcement number CN216894396U discloses an integrated platform device for inclined shaft expansion, drilling and slag removal (inclined shaft construction platform), which includes a frame assembly, a telescopic arm is fixed on the frame assembly, and a slag removal mechanism is installed at one end of the telescopic arm. The slag removal mechanism specifically includes a rotary mechanism, a swing cylinder, a bucket, etc. After the blasting operation is completed, the telescopic arm is extended, and the slag removal mechanism is activated to remove the gravel generated by the blasting to the slag guide hole. At the same time, a manhole cover is also provided on the frame assembly. When drilling into the blasthole, the manhole cover can cover the slag guide hole to prevent workers from accidentally falling into the slag guide hole and ensure the safety of the workers.

[0004] However, in the above patent document, the manhole cover is arranged on the lower side (oblique lower side) of the telescopic arm. Such a design mainly has two problems: first, the manhole cover is easy to interfere with the inclined shaft wall when being recovered, and in actual construction, workers are often required to go down the shaft to assist, which is not safe enough; second, under the action of its own weight, rock debris is easy to accumulate in the corner below the telescopic arm, which requires the debris removal mechanism to have a larger range of activities in the area corresponding to the corner below the telescopic arm, while the manhole cover is on the lower side of the telescopic arm. When the debris removal mechanism is active, the debris removal mechanism is easy to interfere with the manhole cover, thereby reducing the range of activities of the debris removal mechanism and affecting the debris removal effect. Utility Model Content

[0005] The utility model aims to provide an inclined shaft construction platform to solve the technical problem in the prior art that the manhole cover is arranged on the lower side of the telescopic arm, which easily causes interference between the manhole cover and the tunnel wall and the slag removal mechanism, resulting in insufficient construction safety and poor slag removal effect.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the inclined shaft construction stand provided by the utility model is:

[0007] An inclined shaft construction platform comprises a frame assembly, a telescopic mechanism, a slag removal mechanism and a manhole cover. The telescopic mechanism is mounted on the frame assembly, the slag removal mechanism is mounted on one end of the telescopic mechanism, a manhole cover winch for lifting and lowering the manhole cover is provided on the frame assembly, the manhole cover has an avoidance position and a covering position for covering a slag guide tunnel in its moving stroke, and when the manhole cover is in the avoidance position, the manhole cover as a whole is located on the oblique upper side of the telescopic mechanism.

[0008] As a further improvement, the front end of the frame assembly has a manhole cover stopper for cooperating with the manhole cover stopper when the manhole cover is in the avoidance position, so that the manhole cover maintains an obliquely upward deflected posture when in the avoidance position.

[0009] As a further improvement, the manhole cover winch is located on the oblique upper side of the telescopic mechanism.

[0010] As a further improvement, a redirecting wheel is provided on the frame assembly, and the traction rope in the manhole cover winch passes around the redirecting wheel and is connected to the manhole cover.

[0011] As a further improvement, at least two redirecting wheels are provided.

[0012] As a further improvement, the frame assembly includes a door-type frame body, and the telescopic mechanism is installed at a central position in the width direction of the interior of the frame body.

[0013] As a further improvement, escalator platforms are provided on the left and right sides of the frame body.

[0014] As a further improvement, an extension platform that can be extended outward is provided on the escalator platform.

[0015] As a further improvement, the extension platform is a telescopic extension platform.

[0016] As a further improvement, a supporting portion for supporting the tunnel wall is provided at the end of the expansion platform.

[0017] The beneficial effect is that the utility model belongs to the invention creation of element change. Specifically, during implementation, the telescopic mechanism can drive the slag removal mechanism to advance to the slag removal working position or retreat to the recovery position, and the manhole cover winch can drive the manhole cover to move between the avoidance position and the covering position. Different from the prior art, when the manhole cover is in the avoidance position, the manhole cover is located on the oblique upper side of the telescopic mechanism as a whole, so that in the process of the manhole cover moving up, it is away from the tunnel wall (the wall obliquely below the telescopic mechanism) as a whole, and will not interfere with the tunnel wall, and does not require manual assistance to adjust the posture of the manhole cover, which is safer. In addition, at this time, the manhole cover will not occupy the space obliquely below the telescopic mechanism, which is convenient for the slag removal mechanism to achieve a larger range of slag removal actions and ensure a better slag removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a schematic diagram of an embodiment of the inclined shaft construction stand in the utility model during slagging;

[0019] Figure 2 This is a view of an embodiment of the inclined shaft construction stand of the utility model along the tunnel axial direction;

[0020] Figure 3 for Figure 1 Axonometric view of the midframe assembly;

[0021] Figure 4 for Figure 2 A partial enlarged view of the movable coordination position of the middle expansion platform and the escalator platform;

[0022] Figure 5 A schematic diagram of a slag removal mechanism configured for an embodiment of an inclined shaft construction platform in the utility model;

[0023] Figure 6 for Figure 1 A partial enlarged view of the middle A;

[0024] Figure 7 for Figure 1 Schematic diagram of the state of the middle manhole cover when it is in the avoidance position;

[0025] Description of reference numerals:

[0026] 1. Traction system; 2. Telescopic mechanism; 3. Slag removal mechanism; 4. Manhole cover; 5. Manhole cover winch; 6. Traction rope; 7. Frame body; 8. Escalator platform; 9. Top platform; 10. Reversing wheel; 100. Slag guide tunnel; 201. Telescopic cylinder; 202. Guide ring; 203. Telescopic shaft; 301. Rotating seat; 302. Boom; 303. Boom cylinder; 304. Forearm; 305. Forearm cylinder; 306. Bucket; 801. Extension platform; 802. Extension cylinder; 803. Roller; 804. Limiting part; 805. Top support part. DETAILED DESCRIPTION

[0027] When constructing an inclined shaft by the drilling and blasting method, an inclined shaft construction platform is usually required, on which workers can perform operations such as drilling, charging, and slag removal. In order to improve the efficiency of slag removal, an inclined shaft construction platform equipped with a retractable and recyclable slag removal mechanism has appeared in the prior art. After the blasting is completed, the slag removal mechanism is activated to remove the rock slag produced by the blasting to the slag guide tunnel. At the same time, the inclined shaft construction platform is generally also equipped with a manhole cover. When the workers are drilling and charging, the manhole cover is lowered to the position of the slag guide tunnel and covers the slag guide tunnel to prevent the workers from accidentally falling into the slag guide tunnel.

[0028] In order to avoid the interference of the movement of the manhole cover with the tunnel wall and the debris removal mechanism, the basic technical concept of the utility model is to set the recovery and avoidance position of the manhole cover on the oblique upper side of the telescopic mechanism connected to the debris removal mechanism. In this way, on the one hand, the manhole cover can be away from the tunnel wall on the oblique lower side of the telescopic mechanism, which is convenient for lifting and lowering; on the other hand, it also avoids the interference of the debris removal mechanism with the manhole cover when cleaning the rock debris on the oblique lower side of the telescopic mechanism, thereby ensuring the debris removal effect.

[0029] The present invention is further described in detail below in conjunction with the embodiments.

[0030] The specific embodiment of the inclined shaft construction stand provided by the utility model is as follows:

[0031] The inclined shaft construction platform provided in this embodiment is as follows Figure 1 As shown, it includes a frame assembly, a telescopic mechanism 2, a slag removal mechanism 3, a manhole cover 4, etc. The frame assembly is connected with a traction system 1. When the drilling and blasting method is used to expand the inclined shaft, the traction system 1 can pull the inclined shaft construction platform as a whole down or up. The specific process is the existing technology and is not described in detail here. The telescopic mechanism 2 is connected to the frame assembly, and the slag removal mechanism 3 is connected to one end of the telescopic mechanism 2. Under the action of the telescopic mechanism 2, the slag removal mechanism 3 can extend forward and retract backward. The specific process is that when the blasting is completed and the rock slag needs to be removed, the telescopic mechanism 2 pushes the slag removal mechanism 3 forward, and the slag removal mechanism 3 moves to remove the rock slag to the slag guide tunnel 100 excavated in the early stage; when the rock slag is removed, the telescopic mechanism 2 pulls the slag removal mechanism 3 backward to avoid the construction space for the staff to drill and load explosives. The frame assembly is also provided with a manhole cover winch 5, and the traction rope 6 configured by the manhole cover winch 5 can pull the manhole cover 4 up and down. When the workers are drilling and charging, the manhole cover 4 is lowered to cover the opening of the slag guide tunnel 100. At this time, the manhole cover 4 is equivalent to the covering position. When the blasting is completed and the slag needs to be removed, the manhole cover 4 is lifted up to open the opening of the slag guide tunnel 100 and move to a suitable position. At this time, the manhole cover 4 is equivalent to the avoiding position.

[0032] like Figure 1As shown, when the manhole cover 4 is in the avoidance position, the manhole cover 4 is located on the side obliquely above the telescopic mechanism 2, that is, on the oblique upper side. This arrangement has the following advantages. First, when the manhole cover 4 is lowered and lifted, the manhole cover 4 is away from the tunnel wall obliquely below the telescopic mechanism 2, so that the manhole cover 4 will not interfere with the tunnel wall. For example, when the manhole cover 4 is lowered, the traction rope 6 is lowered, and the manhole cover 4 falls vertically downward. At the same time, the traction system 1 pulls the inclined shaft construction platform to move upward as a whole. The movement of the two is combined, so that the manhole cover 4 can just cover the opening of the slag guide tunnel 100. At this time, no manual assistance is required, which improves the safety of the workers. Second, during actual construction, the rock slag produced after blasting is easy to accumulate in the corner of the tunnel wall obliquely below the telescopic mechanism 2 and is difficult to remove. The avoidance position of the manhole cover 4 is located obliquely above the telescopic mechanism 2, so that the manhole cover 4 will not block the action of the slag removal mechanism 3, ensuring that the slag removal mechanism 3 has a larger activity space at the position obliquely below the telescopic mechanism 2, thereby removing the accumulated rock slag and ensuring the effect of slag removal.

[0033] Furthermore, the front end of the frame assembly has a manhole cover stopper for cooperating with the manhole cover 4 when the manhole cover 4 is in the avoidance position. Specifically, the manhole cover stopper refers to the end position of the lower end of the frame assembly. It can be understood that when the manhole cover 4 is being lifted, as long as the position of the manhole cover winch 5 is higher (higher than the lower end of the frame assembly when in use), the manhole cover 4 can be lifted to a state of contact with the front end of the frame assembly when it is lifted. For the frame assembly, the length of the structure at its lower end for contact with the manhole cover 4 that protrudes forward away from the tunnel center cannot be too much. More specifically, as shown in the example below: Figure 1-Figure 3 and Figure 7 Taking the frame assembly including the frame body 7 and the top platform 9 as an example, when in use, the angle between the line connecting the front end of the top platform 9 and the front end of the frame body 7 and the horizontal plane is an acute angle inclined upward (relative to the horizontal plane). In the process of retrieving the traction rope 6, the front end of the frame body 7 will first hit the manhole cover 4. At this time, continuing to retract the traction rope 6 can keep the manhole cover 4 in an obliquely upward deflected posture (relative to the horizontal position) when in the avoidance position. In this way, the space occupied by the manhole cover 4 in the retrieving position can be further reduced, which is convenient for the slag removal mechanism 3 to perform the slag removal action.

[0034] Preferably, the manhole cover hoist 5 is installed on the oblique upper side of the telescopic mechanism 2, so that the position of the manhole cover hoist 5 is close to the avoidance position of the manhole cover 4, the length of the traction rope 6 can be shortened, and the installation and arrangement are convenient. Figure 7As shown, specifically, a redirecting wheel 10 is also provided on the frame assembly, and the traction rope 6 is connected to the manhole cover 4 by passing through the redirecting wheel 10. In this way, the position of the traction rope 6 can be changed and constrained by the redirecting wheel 10, so that the position of the connection point between the traction rope 6 and the manhole cover 4 is closer to the center of gravity of the manhole cover 4, thereby ensuring the stability of the manhole cover 4 during the lifting and lowering process. More specifically, there are more than two redirecting wheels 10, and the redirecting wheels 10 also form a redirecting wheel group, which is equivalent to the traction rope 6 being redirected twice. At this time, the cooperation of the redirecting wheels 10 also has the function of ensuring the tension of the traction rope 6, and can also prevent the traction rope 6 from swinging when lifting and lowering the manhole cover 4. Of course, in other feasible embodiments, the redirecting wheel 10 may not be provided, and the traction rope 6 of the manhole cover hoist 5 may be directly connected to the manhole cover 4, which can also achieve the function of lifting and lowering the manhole cover 4. Of course, those skilled in the art can understand that, when a redirecting wheel 10 is arranged, the manhole cover winch 5 can also be installed on the oblique lower side of the telescopic mechanism 2, and the length of the traction rope 6 configured for the manhole cover winch can be appropriately extended to reach a position where the manhole cover 4 can be lifted by winding around the redirecting wheel.

[0035] In addition, for the frame assembly, if Figure 2 and Figure 3 As shown, it includes a door-type or gate-shaped frame body 7, and the telescopic mechanism 2 is installed inside the frame body 7, and is installed in the middle position of the width direction inside the frame body 7. In this way, on the one hand, the space inside the frame body 7 can be fully utilized to recover the slag removal mechanism 3, and on the other hand, the activity center of the slag removal mechanism 3 is closer to the center of the tunnel wall, which can keep the slag removal mechanism 3 small (no need to arrange an overly long mechanical arm). Of course, in other embodiments, the frame body 7 can also be a frame structure with a closed bottom. In order to ensure that the slag removal mechanism 3 can be smoothly retracted, a through groove or through hole for accommodating the slag removal mechanism 3 can be set in the center of the frame body 7.

[0036] Specifically, escalator platforms 8 are provided on the left and right sides of the frame body 7, and the staff can walk along the escalator platforms 8 or perform construction work on the escalator platforms 8, and the escalator platforms 8 are provided with handrails. Such escalator platforms 8 allow the staff to perform construction work (anchoring, grouting, etc.) at a position closer to the tunnel wall, which is convenient for the staff. In addition to the escalator platforms 8, a top platform 9 is also provided on the top of the frame body 7, and the staff can also perform construction work on the top platform 9. Of course, a bottom platform is also provided on the frame body 7.

[0037] More specifically, the escalator platform 8 is provided with an expansion platform 801 that can be expanded outwards. Figure 2As shown, the outward expansion here refers to the expansion in the direction close to the tunnel wall when in use, so that the active construction area of ​​the staff can be expanded. As a feasible implementation, the expansion platform 801 is a telescopic expansion platform 801. The so-called telescopic expansion platform 801 means that the expansion platform 801 can move linearly along the extension direction of the escalator platform 8, so that it has a telescopic effect. Of course, in other implementations, in addition to the telescopic expansion platform 801, the expansion platform 801 can also be a flip-foldable expansion platform 801.

[0038] An extension cylinder 802 is connected between the extension platform 801 and the escalator platform 8 to push the extension platform 801 to move. In order to improve the stability of the extension platform 801 when moving, a guide structure is also provided between the extension platform 801 and the escalator platform 8. Specifically, Figure 4 As shown, the guide structure includes a roller 803 arranged on the extension platform 801 and a limiting portion 804 arranged on the escalator platform 8. The limiting portion 804 can be a block structure or a frame structure. The roller 803 can roll along the corresponding part of the escalator platform 8, and the limiting portion 804 limits the moving direction of the extension platform 801.

[0039] In order to improve the stability of the inclined shaft construction platform during operation, Figure 2 As shown, the end of the expansion platform 801 is provided with a supporting portion 805 for supporting the tunnel wall. In this way, during construction, after the expansion platform 801 is extended, the supporting portion 805 can be supported against the tunnel wall to support the inclined shaft construction platform as a whole, thereby improving the construction stability of the inclined shaft construction platform. Of course, in addition to providing the supporting portion 805 on the expansion platform 801 to support the inclined shaft construction platform, a supporting structure can also be provided on the frame body 7, such as a supporting cylinder and a boot plate connected to one end of the supporting cylinder.

[0040] like Figure 5 As shown, the slag removal mechanism 3 specifically includes structures such as a slewing seat 301, a boom 302, a forearm 304, and a bucket 306. The slewing seat 301 is connected to the telescopic mechanism 2, and can drive the boom 302 and related structures connected to the boom 302 to rotate. The boom 302 is hinged on the slewing seat 301, the forearm 304 is hinged on the boom 302, and the bucket 306 is hinged on the forearm 304. A boom oil cylinder 303 for driving the boom 302 to move is hinged between the boom 302 and the slewing seat 301, and a forearm oil cylinder 305 for driving the bucket 306 to move is provided between the forearm 304 and the bucket 306. During construction, the slag removal mechanism 3 can realize actions such as rotation and swinging, so as to remove the rock slag and send it to the slag guide tunnel 100.

[0041] like Figure 6As shown, the telescopic mechanism 2 can be a telescopic mechanism 2 driven by a telescopic oil cylinder 201. Specifically, a guide ring 202 is provided on the frame body 7, and a telescopic shaft 203 is movably mounted on the guide ring 202. A telescopic oil cylinder 201 is connected between the telescopic shaft 203 and the frame body 7, and under the action of the telescopic oil cylinder 201, the telescopic shaft 203 can be telescoped forward and backward.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments without creative work, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An inclined shaft construction scaffold, characterized in that: It includes a frame assembly, a telescopic mechanism, a slag removal mechanism, and a manhole cover. The telescopic mechanism is installed on the frame assembly, the slag removal mechanism is installed at one end of the telescopic mechanism, and a manhole cover winch for lifting and lowering the manhole cover is provided on the frame assembly. The manhole cover has an avoidance position and a covering position for covering the slag guide tunnel in its moving stroke. When the manhole cover is in the avoidance position, the manhole cover as a whole is located on the oblique upper side of the telescopic mechanism.

2. The inclined shaft construction stand according to claim 1, characterized in that: The front end of the frame assembly is provided with a manhole cover stopper for cooperating with the manhole cover stopper when the manhole cover is in the avoidance position, so that the manhole cover maintains an obliquely upward deflection posture when in the avoidance position.

3. The inclined shaft construction stand according to claim 1 or 2, characterized in that: The manhole cover winch is located on the upper oblique side of the telescopic mechanism.

4. The inclined shaft construction stand according to claim 1 or 2, characterized in that: A redirecting wheel is arranged on the frame assembly, and a traction rope in the manhole cover hoist passes around the redirecting wheel and is connected to the manhole cover.

5. The inclined shaft construction stand according to claim 4, characterized in that: There are at least two redirecting wheels.

6. The inclined shaft construction stand according to claim 1 or 2, characterized in that: The frame assembly comprises a door-type frame body, and the telescopic mechanism is installed at a central position in the width direction of the interior of the frame body.

7. The inclined shaft construction stand according to claim 6, characterized in that: Escalator platforms are arranged on the left and right sides of the frame body.

8. The inclined shaft construction platform according to claim 7, characterized in that: An extension platform which can be extended outwards is provided on the escalator platform.

9. The inclined shaft construction platform according to claim 8, characterized in that: The expansion platform is a telescopic expansion platform.

10. The inclined shaft construction platform according to claim 9, characterized in that: A supporting part for supporting the tunnel wall is arranged at the end of the expansion platform.

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