A dam foundation curtain grouting movable trolley system

Abstract

A dam foundation curtain grouting movable trolley system, including trolley main body, trolley main body is slidably arranged on the track and is pulled up by traction device, track is embedded in bedrock, when trolley main body stays at somewhere, trolley main body is mechanically locked by track calipers, jacking strut, the dam foundation curtain grouting movable trolley system provided by the utility model guarantees the safety, stability when trolley operation.

Description

Technical Field

[0001] This utility model relates to the field of construction equipment for water conservancy and hydropower projects, and in particular to a mobile trolley system for curtain grouting of dam foundations, which is especially suitable for the construction of curtain grouting operation platforms in sloping terrain. Background Technology

[0002] Traditional slope curtain grouting construction platforms have the following problems: significant safety hazards: steep slope trolleys are prone to slippage due to traction failure, and lack multiple redundant safety locking devices. The patent application number "201320120819.2" entitled "Device for transporting slag removal vehicles on steep slope sections of inclined shafts" only sets up tracks, trolleys, and stops, among which the stops have a limiting function, but does not explain the specific structure and connection relationship. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a movable trolley system for dam foundation curtain grouting, which provides multiple safety locking mechanisms to prevent accidents such as slippage and overturning, and to ensure safety.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A movable trolley system for dam foundation curtain grouting includes a trolley body that is slidably mounted on a track and pulled upward by a traction device; the track is pre-embedded in the bedrock; when the trolley body is stationary at a certain point, it is mechanically locked by track clamps and top supports.

[0006] The trolley body includes a truss, with a working platform at the upper end of the truss and guardrails installed at the edge of the working platform.

[0007] The truss is made of channel steel and welded together; the inclined beam at the bottom of the truss is inserted into and slidably fitted with the track.

[0008] The track clamp is located on the track and limits the rear of the trolley body.

[0009] The track clamp includes a left clamp and a right clamp, which are located on the outside of the track. A connecting plate is fixed at the upper end between the left and right clamps, and the upper part of the left and right clamps is connected and clamped to the track by bolts.

[0010] The top support includes a connecting rod with one end connected to a pre-embedded rod in the bedrock, and the other end of the connecting rod passing through the connecting hole of the cross brace and then being locked with a nut; the cross brace is arranged laterally and located between the inclined beam and the inclined brace at the bottom of the truss.

[0011] Flexible traction devices are arranged on both sides of the trolley body. The flexible traction devices include hand-operated hoists. One end of the hand-operated hoist is connected to the outside of the trolley body 1, and the other end of the hand-operated hoist is connected to the slope reinforcement bar via a traction rope.

[0012] A ladder safety passage is installed on one side of the trolley body.

[0013] This utility model provides a movable trolley system for curtain grouting of dam foundations, which has the following technical advantages:

[0014] 1) By setting track clamps and top supports, the trolley can be prevented from sliding downwards. By setting flexible traction devices, the trolley can be prevented from tipping over to the left or right.

[0015] 2) By arranging a ladder safety passage on one side of the mobile trolley system, the construction platform is separated from personnel access, which can improve safety. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is the left view of the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of the present invention (first perspective).

[0019] Figure 3 This is a schematic diagram of the structure of the present invention (second perspective).

[0020] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0021] Figure 5 for Figure 2 A magnified view of a portion of point B in the middle.

[0022] In the diagram: 1. Trolley body, 1.1. Working platform, 1.2. Guardrail, 1.3. Kickboard, 1.4. Track, 2. Traction device, 3. Bedrock, 4. Track clamp, 5. Top support, 6. Left clamp, 5.1. Right clamp, 5.2. Connecting plate, 5.3. Bolt, 5.4. Cross brace, 6.1. Connecting rod, 6.2. Embedded rod, 6.3. Pad, 6.4. Detailed Implementation

[0023] like Figure 1-4 As shown, a movable trolley system for dam foundation curtain grouting includes a trolley body 1, which is slidably mounted on a track 2 and pulled upward by a traction device 3; the track 2 is pre-embedded in bedrock 4.

[0024] Specifically, the trolley body 1 includes a truss 1.1, which is welded from channel steel. A 50mm thick wooden plank is laid on top of the truss 1.1 to serve as a working platform 1.2, and Φ25 steel pipes are installed around the working platform 1.2 as guardrails 1.3. The guardrails 1.3 include uprights spaced 1m apart and horizontal crossbars spaced 0.6m apart. A 200mm kick plate 1.4 is installed between the bottom of the guardrails 1.3 and the working platform 1.2.

[0025] The track 2 is made of I-beams. The inclined beam at the lower end of the truss 1.1 of the trolley body 1 is a channel steel. The slots of the channel steel can be inserted and matched with the upper end plate of the track 2. The lower part of the trolley body 1 slides and matches the upper end surface of the track 2.

[0026] To ensure safety during construction, a mechanical locking assembly is installed between the trolley body 1 and the track 2. The mechanical locking assembly includes a track clamp 5 and a top support 6.

[0027] The track clamp 5 includes a left clamp 5.1 and a right clamp 5.2. A connecting plate 5.3 is welded to the upper end between the left clamp 5.1 and the right clamp 5.2. The width between the left clamp 5.1 and the right clamp 5.2 matches the width of the track 2 or is 1mm-2mm smaller. The left clamp 5.1 and the right clamp 5.2 are vertically inserted into the track 2, located on the outside of the track 2 and in contact with the side of the track 2. Bolts 5.4 pass through the holes in the left clamp 5.1 and the right clamp 5.2 and press the left clamp 5.1 and the right clamp 5.2 tightly against the side of the track 2. Friction is used to lock the two onto the track 2, so that when the tail of the truss 1.1 of the trolley body 1 is pressed against the track clamp 5, it can prevent the trolley body 1 from moving downward.

[0028] The top support 6 includes a horizontal support 6.1. The horizontal support 6.1 has connecting holes on the left and right sides. One end of the connecting rod 6.2 is connected to the pre-embedded rod 6.3 on the bedrock 4 through a ring or a round hole. The other end of the connecting rod 6.2 passes through the connecting hole of the horizontal support 6.1 and is locked with a nut.

[0029] The cross brace 6.1 is located between the inclined beam and the inclined brace at the lowest end of the truss 1.1, and can prevent the trolley body 1 from moving downward after installation.

[0030] The pre-embedded rods 6.3 are distributed symmetrically in mirror image on the left and right sides of the bedrock 4, and multiple sets are arranged at intervals along the length of the bedrock 4.

[0031] A pad 6.4 is provided between the cross brace 6.1 and the inclined beam of the truss 1.1. The pad 6.4 is made of wood and serves as a protective measure to prevent the cross brace 6.1 from directly contacting the truss 1.1 and from rusting after the paint is scraped off.

[0032] Preferably, flexible traction devices are arranged on both sides of the trolley body 1. The flexible traction device includes a Φ20mm steel wire rope and a hand-operated hoist. One end of the hand-operated hoist is connected to the outside of the trolley body 1, and the other end is connected to the steel wire rope. The steel wire rope is connected to the slope reinforcement to form a backup to prevent the trolley from slipping. If the trolley derails or overturns, its position can be adjusted using the hand-operated hoist.

[0033] Preferably, the traction device 3 includes a 5t winch, which is set at a high point on the slope. The wire rope of the winch is connected to the main body 1 of the trolley. The 5t winch changes the direction of the wire rope through a fixed pulley. The winch winds up and pulls to lift the grouting trolley. A 5t electric hoist is added in some areas to assist in traction. The traction rope is made of Φ20mm wire rope with rope clamps for fixation.

[0034] The trolley body uses [10 channel steel as the frame, 5cm wooden planks as the surface layer, and is protected by a 1.2m high guardrail made of Φ25 steel pipes. The vertical guardrail posts are spaced 1m apart, and the horizontal crossbars are spaced 0.6m apart. A 20-30cm high kick plate is installed at the bottom of the guardrail. The trolley body is integrally welded. During the welding process, all main nodes must be reinforced to ensure weld quality. Connections between channel steel sections can be reinforced with gusset plates. The channel steel welded connections are concave-convex and T-type connections, with weld leg dimensions of 6mm ≤ hf ≤ 12mm and effective thickness of 6mm ≤ hf ≤ 11mm. All overlapping welds must be fully welded.

[0035] Preferably, the trolley body extends outwards on both sides to increase the coverage area. The outward-extending platform is supported by 60-type disc-lock scaffolding base supports, with a single disc-lock base support having a load-bearing capacity of 3t. Each side of the trolley's cantilever platform is supported by 3 base supports. Pads are used at the bottom of the base supports to ensure stability.

[0036] In addition, the trolley serves only as a construction platform, and personnel access is facilitated by a safety ladder walkway arranged on the slope surface. The safety ladder walkway maintains an 800mm distance from the side rails on one side. The safety ladder walkway is constructed using modular steel ladders, with rest platforms every 3 meters along the ladder. The ladder beams are connected to the embedded connectors on the slope surface using a quick-release pin-type connection.

Claims

1. A movable trolley system for curtain grouting of dam foundation, characterized in that: Includes a trolley body (1), which is slidably set on a track (2) and pulled upward by a traction device (3); the track (2) is embedded in bedrock (4); when the trolley body (1) stops at a certain place, the trolley body (1) is mechanically locked by a track clamp (5) and a top support (6).

2. The movable trolley system for dam foundation curtain grouting according to claim 1, characterized in that: The trolley body (1) includes a truss (1.1), and a working platform (1.2) is provided at the upper end of the truss (1.1). Guardrails (1.3) are installed on the edge of the working platform (1.2).

3. The movable trolley system for dam foundation curtain grouting according to claim 2, characterized in that: The truss (1.1) is made of channel steel and welded together; the inclined beam at the bottom of the truss (1.1) is inserted into and slides into the track (2).

4. The movable trolley system for dam foundation curtain grouting according to claim 3, characterized in that: The track clamp (5) is located on the track (2) and limits the tail of the trolley body (1).

5. A movable trolley system for dam foundation curtain grouting according to claim 4, characterized in that: The track clamp (5) includes a left clamp (5.1) and a right clamp (5.2). The left clamp (5.1) and the right clamp (5.2) are located outside the track (2). A connecting plate (5.3) is fixed at the upper end between the left clamp (5.1) and the right clamp (5.2). The upper part of the left clamp (5.1) and the right clamp (5.2) are connected and clamped on the track (2) by bolts (5.4).

6. A movable trolley system for dam foundation curtain grouting according to claim 5, characterized in that: The top support (6) includes a connecting rod (6.2) with one end connected to the pre-embedded rod (6.3) on the bedrock (4), and the other end of the connecting rod (6.2) passes through the connecting hole of the cross brace (6.1) and is locked by a nut; the cross brace (6.1) is arranged laterally and is located between the inclined beam and the inclined brace at the bottom of the truss (1.1).

7. A movable trolley system for dam foundation curtain grouting according to claim 6, characterized in that: Flexible traction devices are arranged on both sides of the trolley body (1). The flexible traction devices include hand-operated hoists. One end of the hand-operated hoist is connected to the outside of the trolley body (1), and the other end of the hand-operated hoist is connected to the slope reinforcement through a traction rope.

8. A movable trolley system for dam foundation curtain grouting according to claim 7, characterized in that: A ladder safety passage is installed on one side of the trolley body.

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