Grooving machine grab bucket for assisting rope to bypass obstacle pipe gallery

Abstract

The utility model relates to the field of underground engineering, relates to a trenching machine, and discloses a trenching machine grab bucket used for assisting a rope to bypass an obstacle pipe gallery, the trenching machine grab bucket is composed of a bucket body, two bucket claws and a hydraulic oil cylinder, the two bucket claws are symmetrical to each other and are respectively and rotatably arranged at the lower end of the bucket body, and the hydraulic oil cylinder pushes the two bucket claws to synchronously rotate in opposite directions or in opposite directions. The opening and closing angle of the two bucket claws is 180 degrees, and the opening and closing angle of the single bucket claw is 90 degrees. Wherein one bucket claw is fixedly connected with a long rod, when the bucket claw is closed, the long rod vertically faces downwards, and when the bucket claw is opened, the long rod horizontally faces the side. When the long rod is in a horizontal state, the bayonet lock is located on the upper side of the long rod, and the tail end of the bayonet lock faces upwards. According to the utility model, the steel bars for manufacturing the steel reinforcement cage on site can be directly used as the long rods and the bayonet locks, the long rods are welded on the bucket claws by using a welding machine for manufacturing the steel reinforcement cage on site, and the bayonet locks are welded on the long rods. Field equipment can be utilized on site, convenience and feasibility are achieved, and extra cost is avoided.

Description

Technical Field

[0001] The utility model belongs to the field of underground engineering and relates to a trenching machine, in particular to a trenching machine grab bucket used for assisting a rope to bypass an obstacle pipe gallery. Background Art

[0002] Underground continuous walls are used to prevent water seepage or earthwork collapse during the excavation of foundation pits, construction, and post-completion use of underground projects. Slotting machines, also known as slotting machines, are important equipment for excavating and forming slots during underground continuous wall construction.

[0003] Since subway stations are mostly located in densely populated residential or commercial areas, there are already mature power, communication, water supply and drainage systems in the area when the subway stations are built. When the subway stations are located under the underground pipeline corridors of these systems, these pipeline corridors constitute an irremovable obstacle to the construction of underground continuous walls.

[0004] During the construction process, it is impossible to drop the steel cage directly under the barrier tunnel, and the steel cage can only be moved horizontally from the slot sections on both sides of the barrier-free tunnel. The steel cage is moved horizontally by pulling the guide rope from the opposite side, but the guide rope cannot directly go around the bottom of the barrier tunnel, and manual assistance is required to enter the slot section to pull the guide rope over. The underground slot section is deep and the environment is more complex, so manual work is very difficult and dangerous, resulting in high labor costs and low manual work efficiency. Summary of the invention

[0005] The utility model overcomes the deficiencies in the prior art, provides a troughing machine grab bucket for assisting a rope to bypass an obstacle pipe gallery, and solves the above problems.

[0006] The technical solution of the utility model is achieved in this way:

[0007] A troughing machine grab bucket is used to assist the rope to bypass the obstacle tunnel. The troughing machine grab bucket is composed of a bucket body, two bucket claws, and a hydraulic cylinder. The two bucket claws are symmetrical to each other and are rotatably arranged at the lower end of the bucket body. The hydraulic cylinder drives the two bucket claws to rotate synchronously in the same direction or in the opposite direction. The opening and closing angle of the two bucket claws is 180 degrees, and the opening and closing angle of a single bucket claw is 90 degrees. A long rod is fixedly connected to one of the bucket claws. When the bucket claw is closed, the long rod is vertically downward, and when the bucket claw is opened, the long rod is horizontally facing to the side. A bayonet is provided at the far end of the long rod. When the long rod is in a horizontal state, the bayonet is located on the upper side of the long rod, and the end faces upward.

[0008] Furthermore, the long rod is fixed on the bucket claw facing the pipe gallery.

[0009] Furthermore, the length of the long rod l 3 Greater than the width of the pipe gallery D .

[0010] Furthermore, before the latch reaches the other side of the second slot section corridor, the angle between the latch and the horizontal plane should be kept less than or equal to 0 degrees.

[0011] Furthermore, when the bayonet reaches the other side of the pipe gallery, the bayonet is just horizontal, that is, the angle between the bayonet and the long rod is θ=arccos( D / l 3).

[0012] The design starting point, concept and beneficial effects of the utility model using the above technical solution are:

[0013] The utility model of the slotting machine grab bucket for assisting the rope to bypass the obstacle pipe gallery can directly use the steel bars of the steel cage made on site as the long rod and the bayonet, and directly use the welding machine for making the steel cage on site to weld the long rod to the bucket claw and the bayonet to the long rod. The on-site equipment can be used on site, which is convenient and easy, and there is no additional cost. The floating ball can be an ordinary balloon, which can be purchased at an ordinary supermarket on the roadside, which is convenient to purchase and low in price.

[0014] It can be seen that the above-mentioned guide rope placement method is very easy to implement, low in cost and high in efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the utility model in an embodiment when the bucket claw is in an open state;

[0016] Figure 2 This is a schematic diagram of the bucket claw in the closed state in the embodiment of the utility model;

[0017] Figure 3 This is a schematic diagram of the working principle of the groove forming machine grab bucket assisting in placing the guide rope in the embodiment of the utility model;

[0018] Figure 4 It is a schematic diagram of the change of the inclination angle of the bayonet pin during the swinging of the long rod in the embodiment of the present invention.

[0019] The reference numerals of the figures are: pipe gallery 1; first slot section 2; second slot section 3; bucket body 4; bucket claw 5; guide rope 12; long rod 13; bayonet pin 14; float ball 15; hanging sleeve 1501. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] The specific implementation of the utility model is as follows:

[0022] Embodiment: The utility model provides a slotting machine grab bucket for assisting a rope to bypass an obstacle pipe gallery, such as Figure 1 As shown, the troughing machine grab bucket is composed of a bucket body 4, two bucket claws 5 arranged at the lower end of the bucket body 4, and a hydraulic cylinder providing power for the bucket claws 5 to move.

[0023] The two bucket claws 5 are symmetrical to each other and are rotatably arranged at the lower end of the bucket body 4. The hydraulic cylinder drives the two bucket claws 5 to rotate synchronously in the same direction or in the opposite direction. The opening and closing angle of the two bucket claws 5 is 180 degrees, and the opening and closing angle of a single bucket claw 5 is 90 degrees.

[0024] A long rod 13 is fixedly connected to the bucket claw 5 of the two bucket claws 5 facing the pipe gallery 1, and a latch 14 is provided at the end of the long rod 13 away from the bucket claw 5. At the construction site, the steel bars used to make the steel cage can be directly used as the long rod 13 and the latch 14, and the long rod 13 can be directly welded to the bucket claw 5 and the latch 14 can be welded to the long rod 13 using the welding machine used to make the steel cage on site. The length of the long rod 13 is l 3 is larger than the width of the pipe gallery 1 D .

[0025] like Figure 1 , 2 As shown, the two bucket claws 5 rotate towards each other. Figure 1 The open state shown changes to Figure 2 When the bucket claws 5 are closed, the opening and closing angle of the two bucket claws 5 is 0 degrees, the long rod 13 is vertically downward, the bayonet 14 is located on one side of the long rod 13, and the end is downward; when the bucket claws 5 are opened, the opening and closing angle of the two bucket claws 5 is 180 degrees, the long rod 13 is horizontally facing sideways, and when the long rod 13 is in a horizontal state, the bayonet 14 is located on the upper side of the long rod 13, and the end is upward.

[0026] like Figure 3As shown, the first slot section 2 and the second slot section 3 are excavated on the first side and the second side of the obstacle tunnel 1, and then the soil below the tunnel 1 is excavated horizontally from the first slot section 2 and the second slot section 3 respectively. After the soil is excavated, the guide rope 12 is placed with the help of the trenching machine grab. First, the second end of the guide rope 12 is connected to a floating ball 15. The floating ball 15 can be an ordinary balloon, which can be purchased at ordinary supermarkets on the roadside. A hanging sleeve 1501 is set on the floating ball 15, the two bucket claws 5 are closed, the long rod 13 is erected downward, and the hanging sleeve 1501 of the floating ball 15 is put on the bayonet 14, and the trenching machine grab is lowered from the first slot section 2, and the bucket claw 5 of the fixed long rod 13 is facing the first side of the tunnel 1. During the lowering process, under the buoyancy of the arm mud (bentonite mud), the floating ball 15 maintains a floating trend, and the hanging sleeve 1501 keeps the sleeve hanging on the bayonet 14. After the grab bucket is lowered to a depth below the pipe gallery 1, the bucket claw 5 is opened, and the long rod 13 swings with the bucket claw 5. The end of the long rod 13 away from the bucket claw 5 extends to the second slot section 3. When the end of the pin 14 gradually points upward, the hanging sleeve 1501 slips off the pin 14 under the pull of the buoyancy of the float 15, and the float 15 floats out of the second slot section 3 with the second end of the guide rope 12.

[0027] like Figure 4 As shown, the angle between the latch 14 and the long rod 13 satisfies the following conditions: before the latch 14 swings with the long rod 13 to the other side of the tunnel 1, the hanging sleeve 1501 cannot slide off the latch 14 upward, and the hanging sleeve 1501 slides off the latch 14 upward at the latest when the long rod 13 reaches a horizontal state.

[0028] In order to prevent the hanging sleeve 1501 from slipping off before the bayonet 14 reaches the second slot section 3, the bayonet 14 should maintain an angle with the horizontal plane that is smaller than the minimum inclination angle of the hanging sleeve 1501 before reaching the second slot section 3. To be on the safe side, the bayonet 14 should maintain an angle with the horizontal plane that is less than or equal to 0 degrees before reaching the second slot section 3. Specifically, when the bayonet 14 reaches the other side of the pipe gallery 1, the bayonet 14 is just horizontal, that is, the angle between the bayonet 14 and the long rod 13 is θ=arccos( D / l 3).

Claims

1. A troughing machine grab bucket used to assist the rope to bypass an obstacle corridor, characterized in that: The grab bucket of the grooving machine consists of a bucket body, two bucket claws, and a hydraulic cylinder. The two bucket claws are symmetrical to each other and are rotatably arranged at the lower end of the bucket body. The hydraulic cylinder drives the two bucket claws to rotate synchronously in the same direction or in the opposite direction. The opening and closing angles of the two bucket claws are 180 degrees, and the opening and closing angle of a single bucket claw is 90 degrees. A long rod is fixedly connected to one of the bucket claws. When the bucket claws are closed, the long rod is vertically downward, and when the bucket claws are opened, the long rod is horizontally facing to the side. A bayonet is provided at the far end of the long rod. When the long rod is in a horizontal state, the bayonet is located on the upper side of the long rod, and the end faces upward.

2. The troughing machine grab bucket according to claim 1, characterized in that: The long rod is fixed on the bucket claw facing the pipe gallery.

3. The groove forming machine grab bucket according to claim 1, characterized in that: The length of the long rod l 3 Greater than the width of the pipe gallery D .

4. The groove forming machine grab bucket according to claim 1, characterized in that: Before the latch reaches the other side of the second slot section corridor, the angle between it and the horizontal plane should be kept less than or equal to 0 degrees.

5. The troughing machine grab bucket according to claim 1, characterized in that: When the bayonet reaches the other side of the tunnel, the bayonet is just horizontal, that is, the angle between the bayonet and the long rod is θ=arccos( D / l 3).

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