Bridge locomotive hole blocking structure capable of reducing length of underground powerhouse

Abstract

The utility model discloses a bridge locomotive hole blocking structure capable of reducing the length of an underground powerhouse. The structure comprises a rock wall crane beam, a rock end wall, a car stop hole and a car stop, the car stop hole is embedded in the rock end wall at the end of the rock wall crane beam, the bottom face of the car stop hole is flush with the top face of a rail on the rock wall crane beam, the car stop hole is backfilled with backfill concrete, and the car stop hole is formed by the backfill concrete. The car stop is fixed in the backfill concrete and extends outwards relative to the rock end wall in the moving direction of the track of the bridge crane. By arranging the bridge crane blocking hole, the car blocking structure is prevented from occupying the space of a plant, the length of the underground plant and the excavation and support engineering amount of the plant can be effectively reduced, the damage risk of a palisade crane beam structure is reduced, and the operation safety of a bridge crane is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of water conservancy and hydropower underground engineering, and in particular relates to a bridge locomotive tunnel blocking structure which can reduce the length of an underground plant. Background Art

[0002] In the construction and operation of underground power plant buildings of water conservancy and hydropower projects, bridge cranes are usually used to lift heavy objects such as electromechanical equipment. Due to the heavy weight of large electromechanical equipment and the large mass of the crane itself, the crane has a large inertia during operation. If the crane driver makes an operating error, the brake fails, or the limit limiter fails, the crane will collide with the bridge crane stop structure arranged at the end of the track, which will produce excessive impact force. The traditional bridge crane stop structure is usually a right-angled triangle support steel frame or reinforced concrete stop column arranged on the rock wall crane beam of the underground plant. In order to effectively resist the collision load and prevent the bridge crane from rushing out of the track, the supporting steel frame or reinforced concrete stop column requires a large structural size along the direction of travel of the bridge crane, generally 1.5 to 3 meters. In order to arrange the bridge crane car stop structure, both ends of the underground factory building must be lengthened in the longitudinal direction, which increases the excavation and support work of the factory building and increases the project investment. At the same time, the car stop structure directly transmits the huge impact force to the rock wall crane beam, which can easily cause the crane beam concrete to crack. In severe cases, it will cause the crane beam to become unstable and damaged, which will have an adverse impact on the rock wall crane beam structure and the safe operation of the bridge crane. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings of the above-mentioned background technology and provide a bridge locomotive blocking hole structure that reduces the length of the underground workshop.

[0004] The technical solution adopted by the utility model is: a bridge locomotive vehicle retaining hole structure for reducing the length of an underground plant, comprising a rock wall crane beam, a rock end wall, a vehicle retaining hole and a vehicle retaining hole in the underground plant, the vehicle retaining hole being embedded in the rock end wall at the end of the rock wall crane beam, the bottom surface of the vehicle retaining hole being flush with the top surface of the track on the rock wall crane beam, the vehicle retaining hole being backfilled with backfill concrete, the vehicle retaining hole being fixed in the backfill concrete and extending outward relative to the rock end wall in the direction of the track of the bridge crane.

[0005] In a further preferred structure, the vehicle retaining hole is a rectangular tunnel structure.

[0006] In a further preferred structure, the vehicle retaining hole is embedded in the rock end wall to a depth of 1m to 1.5m.

[0007] In a further preferred structure, the center line of the bottom surface of the vehicle retaining hole in the direction of the track of the bridge crane coincides with the center line of the track of the bridge crane.

[0008] In a further preferred structure, after the excavation of the vehicle retaining hole is completed, concrete is poured for backfilling, and the outer surface of the backfill concrete is flush with the wall surface of the rock end wall.

[0009] A further preferred structure is that a steel mesh is arranged on the outer surface of the backfill concrete in the vehicle retaining hole, wherein the diameter of the steel bars is 25 mm to 32 mm and the spacing between rows is 20 cm.

[0010] In a further preferred structure, the vehicle stopper is a steel structure and is partially embedded in the backfill concrete.

[0011] In a further preferred structure, the end of the rock wall crane beam is vertically connected to the rock end wall.

[0012] Underground powerhouse: An underground building in a hydropower station where turbines, generators and auxiliary equipment are installed.

[0013] Rock wall crane beam: a reinforced concrete crane beam anchored on the rock side wall of an underground powerhouse.

[0014] Car stop: A device that limits the displacement of the crane to a certain extent.

[0015] Bridge crane: The full name is bridge crane, which is a lifting equipment that is horizontally mounted above the factory workshop to lift equipment and objects.

[0016] Compared with the existing underground workshop bridge locomotive stop structure, the utility model has the following beneficial effects:

[0017] (1) By setting up a bridge locomotive retaining hole, the vehicle retaining structure can be prevented from occupying the factory building space, which can effectively reduce the length of the underground factory building and the amount of factory building excavation and support work, saving project investment.

[0018] (2) By setting up a bridge crane vehicle stop hole and setting the vehicle stop on the backfill concrete in the vehicle stop hole, the impact force of the bridge crane can be directly transmitted to the rock end wall. The rock end wall serves as a fixing and supporting structure of the vehicle stop structure, which can effectively provide impact resistance support for the vehicle stop and improve the safety of bridge crane operation.

[0019] (3) The vehicle stop structure is completely separated from the rock wall crane beam, so that the rock wall crane beam does not bear the huge impact and pulling force of the bridge crane, thereby reducing the risk of concrete cracking of the rock wall crane beam and the risk of instability and damage of the crane beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a vertical view of a bridge locomotive retaining hole structure for reducing the length of an underground workshop according to the utility model;

[0021] Figure 2 This is a top view of a bridge locomotive retaining hole structure for reducing the length of an underground workshop according to the utility model;

[0022] Figure 3 for Figure 2 Cross-sectional view of section AA.

[0023] In the figure: 1. Rock wall crane beam; 2. Rock end wall; 3. Car stop hole; 4. Backfill concrete; 5. Car stop; 6. Bridge crane; 7. Track. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not constitute a limitation on the present invention.

[0025] like Figure 1-3 As shown, the utility model includes a rock wall crane beam 1 in an underground factory building, a rock end wall 2, a car stopper hole 3 embedded in the rock end wall 2, and also includes backfill concrete 4 in the car stopper hole 3 and a car stopper 5 installed at the end of the backfill concrete 4 in the hole. The center line of the bottom surface of the car stopper hole 3 in the direction of the track 7 of the bridge crane 6 coincides with the center line of the track 7 of the bridge crane 6, the bottom surface of the car stopper hole 3 is flush with the top surface of the track 7 on the rock wall crane beam 1, the car stopper hole 3 is backfilled with backfill concrete 4, the car stopper 5 is fixed in the backfill concrete 4 and extends outward relative to the rock end wall 2 in the direction of the track 7 of the bridge crane 6.

[0026] When the bridge crane 6 cannot brake in time due to the crane driver's operating error, brake failure or limit limiter failure, the bridge crane 6 will directly hit the car stop 5. The backfilled concrete 4 in the car stop hole 3 serves as the installation and support structure of the car stop 5, which can directly transmit the huge impact force on the car stop 5 to the rock end wall 2, thereby ensuring the effectiveness of the car stop 5 and ensuring that the bridge crane 6 does not run out of the track 7. Since the car stop hole 3 is embedded in the rock end wall 2 and does not occupy the underground plant space, the length of the underground plant and the amount of plant excavation and support engineering can be reduced, saving engineering investment. At the same time, the car stop hole 3, the backfilled concrete 4 in the hole and the car stop 5 are completely separated from the rock wall crane beam 1, and the rock wall crane beam 1 does not bear the huge impact tension, which can reduce the risk of concrete cracking and instability damage of the rock wall crane beam 1.

[0027] In order to ensure the structural strength of the backfill concrete 4 in the vehicle retaining hole 3, a steel mesh is arranged on the outer surface of the concrete close to the bridge crane 6 side. The diameter of the steel bars is 25mm to 32mm, and the spacing between rows is 20cm.

[0028] The car stop hole 3 is generally preferably a rectangular parallelepiped, and its structural dimensions should meet the installation height and installation size requirements of the car stop 5, as shown in the attached Figure 2 , Figure 3 As shown, the depth of the vehicle stopper hole 3 embedded in the rock end wall 2 is 1m to 1.5m, the cave top elevation is 60cm higher than the installation position of the vehicle stopper 5, and the cave width is 1.2m.

[0029] The vehicle stopper 5 is generally preferably a steel structure of a hard stop, and a spring or rubber structure with a buffering function may also be used as required during application.

[0030] The utility model has a simple structure and is convenient to construct, can effectively reduce the length of the underground workshop, save engineering investment, reduce the risk of damage to the rock wall crane beam structure and improve the safety of bridge crane operation.

[0031] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

Claims

1. A bridge locomotive tunnel retaining structure for reducing the length of an underground plant, characterized in that: The invention comprises a rock wall crane beam (1), a rock end wall (2), a vehicle stop hole (3) and a vehicle stop (5) in an underground plant. The vehicle stop hole (3) is embedded in the rock end wall (2) at the end of the rock wall crane beam (1). The bottom surface of the vehicle stop hole (3) is flush with the top surface of the track (7) on the rock wall crane beam (1). The vehicle stop hole (3) is backfilled with backfill concrete (4). The vehicle stop (5) is fixed in the backfill concrete (4) and extends outward relative to the rock end wall (2) in the direction of the track (7) of the bridge crane (6).

2. The bridge locomotive retaining hole structure for reducing the length of the underground workshop according to claim 1 is characterized in that: The vehicle blocking hole (3) is a rectangular parallelepiped tunnel structure.

3. A bridge locomotive tunnel retaining structure for reducing the length of an underground powerhouse according to claim 1 or 2, characterized in that: The vehicle retaining hole (3) is embedded in the rock end wall (2) to a depth of 1m to 1.5m.

4. The locomotive tunnel retaining structure for reducing the length of an underground workshop according to claim 1 is characterized in that: The center line of the bottom surface of the vehicle blocking hole (3) in the direction of the track (7) of the bridge crane (6) coincides with the center line of the track (7) of the bridge crane (6).

5. The locomotive tunnel retaining structure for reducing the length of an underground workshop according to claim 1 is characterized in that: After the excavation of the vehicle retaining hole (3) is completed, concrete is poured for backfilling, and the outer surface of the backfill concrete (4) is flush with the wall surface of the rock end wall (2).

6. A bridge locomotive tunnel retaining structure for reducing the length of an underground powerhouse according to claim 1 or 5, characterized in that: A steel mesh is arranged on the outer surface of the backfilled concrete (4) in the vehicle blocking hole (3), wherein the diameter of the steel bars is 25 mm to 32 mm and the spacing between rows is 20 cm.

7. The locomotive tunnel retaining structure for reducing the length of an underground workshop according to claim 1 is characterized in that: The vehicle stopper (5) is a steel structure and is partially pre-embedded on the backfill concrete (4).

8. The locomotive tunnel retaining structure for reducing the length of an underground workshop according to claim 1 is characterized in that: The end of the rock wall crane beam (1) is vertically contacted and connected with the rock end wall (2).

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