Dam concrete horizontal transportation system

Abstract

A dam concrete horizontal transportation system comprises an upper slope platform, a material waiting platform and a lower slope platform which are sequentially arranged, a feeding channel is vertically formed in the material waiting platform, a telescopic sliding groove is connected to the bottom of the feeding channel, and the discharging end of the telescopic sliding groove is aligned to a cable crane hanging tank. The concrete dumping risk of the dumper can be reduced, and the concrete dumping convenience is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of dam construction in hydropower projects, and particularly relates to a horizontal concrete transportation system for dams. Background Art

[0002] For dams, especially extra-high arch dams, most of the concrete is horizontally transported by dump trucks and vertically transported by cable cranes. When the dump truck transports the concrete to the waiting platform at the dam shoulder and receives the feeding instruction, the dump truck driver starts to reverse to the loading platform, and then dumps the concrete into the cable crane bucket through lifting the carriage, and then starts the vertical transportation.

[0003] To facilitate the transportation by cable crane, the loading platform is generally set at the edge of the dam shoulder. The upper edge is provided with a retaining sill to block the dump truck to prevent the dump truck from falling into the cliff outside the retaining sill at the dam shoulder during unloading. Usually, the height of the retaining sill is 50 - 300 cm.

[0004] This horizontal transportation and transfer method requires the dump truck driver to have a high level of attention and technical skills, and be able to pour the concrete in the dump truck into the designated position of the cable crane bucket within a short time. During the reversing process, approaching the high-altitude edge, there are few reference objects for the driver, and the psychological pressure is high, which is extremely easy to cause the phenomenon of "the vehicle hitting the sill". If the speed and power are not controlled properly, it is easy to cause the dump truck to hit the cable crane bucket or even fall off the cliff, with extremely high safety risks. Content of the Utility Model

[0005] The utility model provides a horizontal concrete transportation system for dams to solve the problem of relatively high risk of dumping concrete by dump trucks.

[0006] To solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A horizontal concrete transportation system for dams includes an upper slope platform, a waiting platform, and a lower slope platform arranged in sequence. A feeding channel is vertically opened in the waiting platform. The bottom of the feeding channel is communicated with a telescopic chute, and the discharging end of the telescopic chute is aligned with the cable crane bucket.

[0008] Furthermore, the width of the waiting platform is greater than the width of the dump truck, and the width of the feeding channel is not greater than the distance between the two side tires of the dump truck.

[0009] Furthermore, a retractable receiving hopper is arranged at the feeding channel. When the dump truck passes through the feeding channel, the receiving hopper contracts; when the dump truck unloads, the receiving hopper expands.

[0010] Furthermore, sliding grooves are opened on the periphery of the feeding channel. The receiving hopper is in a folded shape and is slidably arranged in the sliding grooves, and the receiving hopper can be completely received in the sliding grooves.

[0011] Furthermore, a sliding member is fixed at the discharge end of the telescopic chute, and the sliding member is slidably clamped on the retaining sill.

[0012] Furthermore, protective sills are cast at intervals on both sides of the upper slope platform, the lower slope platform and the material waiting platform.

[0013] Furthermore, the height of the feeding channel is not greater than 1 / 2 of the height of the material waiting platform.

[0014] Furthermore, the slopes of the upper slope platform and the lower slope platform are between 5% and 10%.

[0015] The utility model can achieve the following beneficial effects:

[0016] 1. The material waiting platform is used for discharging materials. When the self-unloading truck runs to the material waiting platform, the concrete can be directly poured into the feeding channel, and then the concrete can be transported to the cableway suspension bin through the telescopic chute. The operation is simple, without the risk of backing up and commanding at the edge, the requirement for the driver is not high, and the safety risk is low.

[0017] 2. The concrete is transported to the cableway suspension bin through the telescopic chute for the second time. The discharging point is clear, and it is not easy to mis-discharge materials. Moreover, the discharging point can be changed, so that the concrete can be discharged into the cableway suspension bin more accurately.

[0018] 3. The setting of the receiving hopper can enclose the periphery of the feeding channel when the self-unloading truck is discharging materials, reducing the risk of the self-unloading truck pouring the concrete onto the material waiting platform, and making the concrete pour into the feeding channel as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following further illustrates the utility model with reference to the drawings and embodiments:

[0020] Figure 1 It is the effect diagram of the dam construction area;

[0021] Figure 2 It is the structural schematic diagram of a horizontal concrete transportation system for a dam of the utility model.

[0022] In the drawings, the list of components represented by each reference numeral is as follows:

[0023] 1. Upper slope platform; 2. Material waiting platform; 21. Feeding channel; 211. Sliding groove; 3. Lower slope platform; 4. Telescopic chute; 5. Receiving hopper; 6. Sliding member; 7. Protective sill;

[0024] 100. Dam; 200. Cableway suspension bin; 300. Dam shoulder; 400. Driving tunnel; 500. Material taking platform; 600. Mixing plant; 700. Retaining sill. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] For ease of understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. Embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0026] As Figure 1 shown, for the construction of a super-high dam, abutments 300 are formed on both sides of the dam 100. The abutments 300 are used for the construction of auxiliary buildings for the dam 100 and the temporary stacking and transportation of materials during the construction of the dam 100. When transporting the concrete of the dam 100, a cable crane is used to transfer the concrete to the pouring point. A cable crane hanging bucket 200 is provided at the end of the cable crane hoisting rope.

[0027] Generally, the transportation plan for the concrete of the dam 100 from the mixing plant to the material taking platform 500 is as follows: After a dump truck or a mixer truck loads the concrete from the mixing plant, the dump truck or the mixer truck drives through the driving tunnel 400 or the road and then arrives at the abutment 300. A material taking platform 500 is built on the edge of the abutment 300. After the cable crane transports and places the cable crane hanging bucket 200 on the material taking platform 500, the dump truck or the mixer truck then dumps the concrete into the cable crane hanging bucket 200 at the edge of the abutment 300.

[0028] A horizontal transportation system for dam concrete, referring to Figure 2 , includes an upper slope platform 1, a waiting platform 2, and a lower slope platform 3 arranged in sequence along the road of the abutment 300. The upper slope platform 1, the waiting platform 2, and the lower slope platform 3 are arranged in parallel with the material taking platform 500. A feeding channel 21 is vertically opened in the waiting platform 2. The bottom of the feeding channel 21 communicates with a telescopic chute 4. The telescopic chute 4 can specifically be a universal telescopic chute 4. The discharging end of the telescopic chute 4 is slidably lapped on a retaining dam 700, and the discharging port of the telescopic chute 4 is aligned with the cable crane hanging bucket 200.

[0029] When discharging materials using the horizontal transportation system of the present application, it is only necessary for the dump truck to drive along the upper slope platform 1 to the waiting platform 2, pour the concrete in the dump truck into the feeding channel 21, and then drive out along the lower slope platform 3. Among them, the width of the waiting platform 2 is greater than the width of the dump truck, and the width of the feeding channel 21 is not greater than the distance between the two tires on both sides of the dump truck, so that the dump truck can straddle the feeding channel 21 when passing through the waiting platform 2 and directly drive out of the waiting platform 2, and at the same time, it can more conveniently complete the discharging of the concrete.

[0030] In another embodiment, a sliding groove 211 is formed on the periphery of the material waiting platform 2 around the feeding channel 21. A receiving hopper 5 is received in the sliding groove 211, and the receiving hopper 5 is slidably arranged in the sliding groove 211. When the dump truck unloads materials, the receiving hopper 5 extends out of the surface of the material waiting platform 2 from the sliding groove 211 and serves as a concrete pouring enclosure structure to reduce the pollution of the material waiting platform 2 when the concrete falls onto the surface of the material waiting platform 2 during the unloading of the dump truck. After the dump truck finishes unloading materials, the receiving hopper 5 is completely received in the sliding groove 211 to facilitate the smooth passage of the dump truck through the material waiting platform 2. The receiving hopper 5 is inclined. After the receiving hopper 5 extends out of the sliding groove 211, the enclosure area gradually increases in the direction away from the material waiting platform 2.

[0031] In another preferred embodiment, a scraper is fixed at one side edge of the sliding groove 211 close to the feeding channel 21. The scraper is arc-shaped, and the outer arc surface faces the feeding channel 21. When the receiving hopper 5 contracts into the sliding groove 211, the scraper can scrape the concrete on the surface of the receiving hopper 5 and make the concrete flow into the feeding channel 21 along the arc surface of the scraper, realizing the cleaning of the surface of the receiving hopper 5.

[0032] Among them, the slopes of the upper ramp platform 1 and the lower ramp platform 3 are between 5% and 10%. Furthermore, the slopes of the upper ramp platform 1 and the lower ramp platform 3 are relatively gentle. While facilitating the driving of the dump truck, a height difference can also be formed between the feeding channel 21 and the discharging section of the telescopic chute 4, facilitating the sliding of the concrete along the telescopic chute 4 into the cableway suspension bin 200. Further, the height of the feeding channel 21 is not greater than 1 / 2 of the height of the material waiting platform 2. By restricting the height of the feeding channel 21, the height difference at both ends of the telescopic chute 4 is ensured to realize the unloading of the concrete. In addition, the height difference of the feeding channel 21 is relatively small, reducing the impact force of the concrete falling from the feeding channel 21 into the telescopic chute 4.

[0033] To improve the driving safety of the dump truck, protective ridges 7 are formed at intervals on both sides of the upper ramp platform 1, the lower ramp platform 3, and the material waiting platform 2 to prevent the dump truck from falling onto the upper ramp platform 1, the lower ramp platform 3, and the material waiting platform 2 due to operating errors.

[0034] A sliding member 6 is arranged at one end of the telescopic chute 4 close to the cableway suspension bin 200. The sliding member 6 is clamped on the retaining ridge 700. The port of the telescopic chute 4 extends out of the sliding member 6 and is located above the material taking platform 500, so that the concrete can smoothly pass through the telescopic chute 4 and be discharged into the cableway suspension bin 200. The sliding member 6 can slide along the retaining ridge 700 and is fixed on the retaining ridge 700 by a screw, thereby realizing the adjustment of the position of the discharging port of the telescopic chute 4. Since the cableway suspension bin 200 is controlled by a cableway and stays on the material taking platform 500, it is difficult to accurately control the parking point of the cableway suspension bin 200. By moving the sliding end of the telescopic chute 4, fine adjustment of the discharging point can be realized, enabling the concrete to be accurately discharged into the cableway suspension bin 200.

[0035] In a horizontal concrete transportation system for a dam in this application, by providing an upper ramp platform 1, a waiting platform 2, and a lower ramp platform 3 that are parallel to the material fetching platform 500, the dump truck can accurately complete unloading without backing up along the edge, reducing the safety risk, decreasing the driving difficulty, and improving the unloading efficiency.

[0036] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A horizontal transportation system for dam concrete, characterized in that: It includes an upper ramp platform (1), a material waiting platform (2), and a lower ramp platform (3) arranged in sequence. A feeding channel (21) is vertically opened in the material waiting platform (2). The bottom of the feeding channel (21) is communicated with a telescopic chute (4), and the discharging end of the telescopic chute (4) is aligned with the cableway suspension bin (200).

2. The horizontal concrete transportation system for a dam according to claim 1, characterized in that: The width of the material waiting platform (2) is greater than the width of the dump truck, and the width of the feeding channel (21) is not greater than the distance between the two tires on both sides of the dump truck.

3. The horizontal concrete transportation system for a dam according to claim 1, characterized in that: A retractable receiving hopper (5) is arranged at the feeding channel (21). When the dump truck passes through the feeding channel (21), the receiving hopper (5) retracts; when the dump truck unloads, the receiving hopper (5) expands.

4. The horizontal concrete transportation system for a dam according to claim 3, characterized in that: Sliding grooves (211) are opened on the periphery of the feeding channel (21). The receiving hopper (5) is in a folded shape, and the receiving hopper (5) is slidably arranged in the sliding grooves (211), and the receiving hopper (5) can be completely retracted into the sliding grooves (211).

5. The horizontal concrete transportation system for a dam according to claim 1, characterized in that: A sliding member (6) is fixed at the discharging end of the telescopic chute (4), and the sliding member (6) is slidably clamped on the retaining sill (700).

6. The horizontal concrete transportation system for a dam according to claim 1, wherein: On both sides of the upper ramp platform (1), the lower ramp platform (3), and the material waiting platform (2), protective sills (7) are formed by casting at intervals.

7. A horizontal concrete transportation system for a dam according to claim 1, characterized in that: The height of the feeding channel (21) is not greater than 1 / 2 of the height of the material waiting platform (2).

8. The horizontal concrete transportation system for a dam according to claim 1, wherein: The slopes of the upper ramp platform (1) and the lower ramp platform (3) are between 5% and 10%.

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