Automatic shearing device for mud outlet of spiral unearthing machine of earth pressure balance shield machine

Abstract

The invention discloses an automatic shearing device for a mud outlet of a spiral unearthed machine of an earth pressure balance shield machine, which comprises an outlet pipeline connected to a mud outlet pipeline of the spiral unearthed machine, oil cylinder seats arranged on the left side and the right side of the outlet pipeline, and a first rotating oil cylinder and a second rotating oil cylinder which are respectively arranged on the two oil cylinder seats and have opposite rotating directions, the first shearing plate and the two first rotating arms form a first U-shaped shearing tool which is driven by a first rotating oil cylinder to rotate, the second shearing plate and the two second rotating arms form a second U-shaped shearing tool which is driven by a second rotating oil cylinder to rotate, and the second U-shaped shearing tool and the first U-shaped shearing tool are arranged in a mutually nested mode. According to the device, clay adhering to the mud outlet of the spiral unearthed machine can be automatically cut and cleaned, equipment failures caused by blockage of the mud outlet are avoided, safety accidents of personal injuries and deaths caused by the gushing phenomenon during manual clay cleaning are avoided, safety risks are reduced, and the shield unearthed efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of shield machines, in particular to an automatic shearing device for a mud outlet of a spiral excavator of an earth pressure balance shield machine. Background Art

[0002] In trenchless engineering, the spiral excavator is an important component of the earth pressure balance shield machine. Its spiral shaft extends into the mud and water bin. During construction, a certain pressure is set in the soil bin. Under the action of the soil bin pressure and the rotation of the spiral shaft, the mud is discharged from the spiral excavator. During construction, the shield machine will encounter various soil types, among which the spiral excavator is more difficult to deal with the highly viscous soil. When the clay is transmitted to the mud outlet through the spiral shaft, its viscosity will cause the mud outlet to stick and remain. Over time, the mud outlet will accumulate and be blocked, causing the spiral excavator to run at high load for a long time, and the power equipment will heat up and cause mechanical failure. In order to make the spiral excavator excavate smoothly, manual cleaning is usually adopted. The disadvantage is that there is a risk of gushing at the mud outlet, and there is a risk of personal injury during cleaning. Summary of the invention

[0003] The purpose of the present invention is to provide an automatic shearing device for the mud outlet of the spiral excavator of an earth pressure balance shield machine, so as to solve the problem that the mud outlet of the spiral excavator is blocked by sticky soil and is difficult to clean, and safety accidents are prone to occur during cleaning.

[0004] In order to solve the above technical problems, the present invention provides a technical solution: an automatic shearing device for the mud outlet of a spiral excavator of an earth pressure balance shield machine, comprising:

[0005] An outlet pipe is connected to the mud outlet pipe of the spiral excavator;

[0006] There are two oil cylinder seats, which are respectively arranged on the left and right sides of the outlet pipe;

[0007] A first rotating cylinder, disposed on one of the cylinder seats;

[0008] A second rotating cylinder is arranged on the other cylinder seat, and the second rotating cylinder rotates in the opposite direction to the first rotating cylinder;

[0009] There are two first rotating arms, one of which is located between the outlet pipe and the first oil cylinder seat and fixedly arranged on the rotating shaft of the first rotating oil cylinder, and the other first rotating arm is located between the outlet pipe and the second rotating oil cylinder and hingedly connected to the rotating shaft of the second rotating oil cylinder;

[0010] A first shearing plate, disposed between the two first rotating arms, wherein the first shearing plate and the two first rotating arms form a first U-shaped shear;

[0011] There are two second rotating arms, one of which is located between the outlet pipe and the second oil cylinder seat and fixedly arranged on the rotating shaft of the second rotating oil cylinder, and the other second rotating arm is located between the outlet pipe and the first oil cylinder seat and hingedly connected to the rotating shaft of the first rotating oil cylinder;

[0012] The second shear plate is connected between the two second rotating arms. The second shear plate and the two second rotating arms form a second U-shaped shear. The second U-shaped shear and the first U-shaped shear are nested with each other. The rotation radius of the first U-shaped shear and the second U-shaped shear are both larger than the circumscribed circle radius of the outlet pipe and larger than the distance between the rotating axis and the outlet pipe.

[0013] Furthermore, in the automatic shearing device for the mud outlet of the spiral excavator of the earth pressure balance shield machine provided by the present invention, the first rotary cylinder and the second rotary cylinder are both replaced by torque motors.

[0014] Furthermore, in the automatic shearing device for the mud outlet of the spiral excavator of the earth pressure balance shield machine provided by the present invention, the outer surfaces of the first shear plate of the first U-shaped shear and the second shear plate of the second U-shaped shear are both tooth surfaces.

[0015] Furthermore, in the automatic shearing device for the mud outlet of the spiral excavator of the earth pressure balance shield machine provided by the present invention, the tooth surface is coated with a paint coating.

[0016] Furthermore, in the automatic shearing device for the mud outlet of the spiral excavator of the earth pressure balance shield machine provided by the present invention, the tooth surface is formed by a hard alloy part welded on the outer surface of the shear plate, and the hard alloy part is edged and quenched.

[0017] Furthermore, in the automatic shearing device for the mud outlet of the spiral excavator of the earth pressure balance shield machine provided by the present invention, the rotation angles of the first rotating oil cylinder and the second rotating oil cylinder are both greater than 90 degrees.

[0018] Furthermore, in the automatic shearing device for the mud outlet of the spiral excavator of the earth pressure balance shield machine provided by the present invention, the outlet pipe is connected to the mud outlet pipe through a flange and flange bolts.

[0019] Furthermore, the automatic shearing device for the mud outlet of the spiral excavator of the earth pressure balance shield machine provided by the present invention removes the outlet pipe and replaces the outlet pipe with the mud outlet pipe of the spiral excavator.

[0020] Furthermore, in the automatic shearing device for the mud outlet of the spiral excavator of the earth pressure balance shield machine provided by the present invention, the rotation radius of the first rotating arm is greater than the rotation radius of the second rotating arm, the first U-shaped shear is located on the outside, and the second U-shaped shear is located on the inside.

[0021] Furthermore, in the automatic shearing device for the mud outlet of the spiral excavator of the earth pressure balance shield machine provided by the present invention, the rotation radius of the first rotating arm is smaller than the rotation radius of the second rotating arm, the first U-shaped shear is located on the inside, and the second U-shaped shear is located on the outside.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The automatic shearing device for the mud outlet of the spiral excavator of the earth pressure balance shield machine provided by the present invention drives the first and second rotating cylinders to rotate in opposite directions, thereby driving the first U-shaped shear formed by the two first rotating arms and the first shear plate and the second U-shaped shear formed by the two second rotating arms and the second shear plate to rotate in opposite directions. When the first U-shaped shear and the second U-shaped shear rotate to the outlet pipe and encounter clay adhered thereto, the clay is cut off by the first shear plate on the first U-shaped shear and the second shear plate on the second U-shaped shear, thereby automatically cutting and cleaning the adhered clay at the mud outlet of the spiral excavator, avoiding equipment failure caused by blockage of the mud outlet of the spiral excavator, avoiding safety accidents of personal injury and death due to gushing when manually cleaning clay, reducing the safety risk of shield excavation, and no need to stop the machine for cleaning, thereby improving the shield and excavation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a side view structural schematic diagram of an automatic shearing device of a mud outlet of a spiral excavator of an earth pressure balance shield machine connected to a mud outlet pipe of the spiral excavator;

[0025] Figure 2 It is a schematic diagram of the cross-sectional structure of the automatic shearing device of the mud outlet of the spiral excavator of the earth pressure balance shield machine;

[0026] As shown in the figure:

[0027] 100. Automatic shearing device for the mud outlet of the spiral excavator of the earth pressure balance shield machine, 101. Outlet pipe, 102. Cylinder seat, 103. First rotating cylinder, 104. Second rotating cylinder, 105. First rotating arm, 106. First shear plate, 107. Second rotating arm, 108. Second shear plate, 109. Carbide parts, 110. Mud outlet pipe, 111. Flange, 112. Flange bolts. DETAILED DESCRIPTION

[0028] The present invention is described in detail below in conjunction with the accompanying drawings: The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0029] Please refer to Figure 1 to Figure 2The embodiment of the present invention provides an automatic shearing device 100 for the mud outlet of a spiral excavator of an earth pressure balance shield machine, comprising an outlet pipe 101, a cylinder seat 102, a first rotating cylinder 103, a second rotating cylinder 104, a first rotating arm 105, a first shear plate 106, a second rotating arm 107 and a second shear plate 108, wherein:

[0030] The outlet pipe 101 is connected to the mud outlet pipe 110 of the spiral excavator. The outlet pipe 101 is a square pipe that matches the outlet end of the mud outlet pipe 110. In order to improve the reliability of the connection, the outlet pipe 101 and the mud outlet pipe 110 can be connected by a flange 111 and flange bolts 112.

[0031] There are two oil cylinder seats 102, which are respectively arranged on the left and right sides of the outlet pipe 101. The two oil cylinder seats 102 can be distributed on the horizontal center line of the outlet pipe 101.

[0032] The first rotating cylinder 103 is disposed on one of the cylinder seats 102 .

[0033] The second rotating cylinder 104 is arranged on the other cylinder seat 102, and the second rotating cylinder 104 rotates in the opposite direction to the first rotating cylinder 103. The cylinder seat 102 is used to fix the two rotating cylinders, so that the two rotating cylinders 103 are fixedly arranged on the outlet pipe 101 through the cylinder seat 102.

[0034] There are two first rotating arms 105, one of which is located between the outlet pipe 101 and the first cylinder seat 102 and fixedly arranged on the rotating shaft of the first rotating oil cylinder 103, and the other first rotating arm 105 is located between the outlet pipe 101 and the second rotating oil cylinder 104 and is hinged on the rotating shaft of the second rotating oil cylinder 104. The first rotating arm 105 and the rotating shaft of the first rotating oil cylinder 103 can be fixedly arranged by a key, a pin or a bolt, and the first rotating arm 105 and the rotating shaft of the second rotating oil cylinder 104 can be hinged by a bearing.

[0035] The first shear plate 106 is arranged between the two first rotating arms 105, and the first shear plate 106 and the two first rotating arms 105 form a first U-shaped shear. At this time, when the first rotating oil cylinder 103 rotates, it drives the first rotating arm 105 connected thereto to rotate, and the first shear plate 106 connected to the rotating first rotating arm 105 drives the other first rotating arm 105 to rotate synchronously. At this time, since the first rotating arm 105 hinged on the rotating shaft of the second rotating oil cylinder 104 does not rotate with the second rotating oil cylinder 104, the overall rotation of the first U-shaped shear is realized.

[0036] There are two second rotating arms 107, one of which is located between the outlet pipe 101 and the second cylinder seat 102 and fixedly arranged on the rotating shaft of the second rotating oil cylinder 104, and the other second rotating arm 107 is located between the outlet pipe 101 and the first cylinder seat 102 and is hinged on the rotating shaft of the first rotating oil cylinder 103. The second rotating arm 107 and the rotating shaft of the second rotating oil cylinder 104 can also be fixedly arranged by a key, a pin or a bolt, and the second rotating arm 107 and the rotating shaft of the first rotating oil cylinder 103 can also be hinged by a bearing.

[0037] The second shear plate 108 is connected between the two second rotating arms 107. The second shear plate 108 and the two second rotating arms 107 form a second U-shaped shear. The second U-shaped shear is nested with the first U-shaped shear. The rotation radius of the first U-shaped shear and the second U-shaped shear are both larger than the circumscribed circle radius of the outlet pipe 101 and larger than the distance between the rotating axis and the outlet pipe 101. In other words, the rotation radius of the first rotating arm 105 and the second rotating arm 107 are both larger than the circumscribed circle radius of the outlet pipe 101 and larger than the distance between the rotating axis and the outlet pipe 101. At this time, when the second rotating oil cylinder 104 rotates in the opposite direction, it drives the second rotating arm 107 connected thereto to transfer, and the second shear plate 108 connected to the rotating second rotating arm 107 drives the other second rotating arm 107 to rotate synchronously. At this time, since the second rotating arm 105 hinged on the first rotating oil cylinder 103 does not rotate with the first rotating oil cylinder 103, the overall rotation of the second U-shaped shear is realized. The first U-shaped shears and the second U-shaped shears are crossed to cut off the clay adhering to the outlet of the outlet pipe 101 between the two.

[0038] The automatic shearing device 100 for the mud outlet of the spiral excavator of the earth pressure balance shield machine provided in the embodiment of the present invention, when the first and second rotating cylinders 103 and 104 rotate in opposite directions, drive the first U-shaped shear formed by the two first rotating arms 105 and the first shear plate 106 and the second U-shaped shear formed by the two second rotating arms 107 and the second shear plate 108 to rotate in opposite directions. When the first U-shaped shear and the second U-shaped shear rotate to the outlet pipe 101 and encounter clay adhered thereto, the first shear plate 106 on the first U-shaped shear and the second shear plate 108 on the second U-shaped shear are staggered to cut off the clay, thereby automatically cutting and cleaning the adhered clay at the mud outlet of the spiral excavator, avoiding equipment failure caused by blockage of the mud outlet of the spiral excavator, avoiding safety accidents such as personal injury and death due to gushing when manually cleaning clay, reducing the safety risk of shield excavation, and no need to stop the machine for cleaning, thereby improving the shield and excavation efficiency.

[0039] The automatic shearing device 100 for the mud outlet of the spiral excavator of the earth pressure balance shield machine provided in the embodiment of the present invention is connected to the mud outlet pipe 110 of the spiral excavator through the outlet pipe 101. When the automatic shearing device 100 fails, it can be removed from the mud outlet pipe 110 of the spiral excavator for maintenance, thereby not affecting the construction of the spiral excavator and without the need to stop the machine, thereby further improving the shield excavation efficiency.

[0040] In order to realize the rotation of the first U-shaped shear and the second U-shaped shear in opposite directions and ensure the torque for cutting the clay, the automatic shearing device 100 for the mud outlet of the spiral excavator of the earth pressure balance shield machine provided by the embodiment of the present invention, the first rotating cylinder 103 and the second rotating cylinder 104 are both replaced by torque motors. At this time, the rotation directions of the two torque motors are opposite.

[0041] Please refer to Figure 1 In order to more conveniently cut off the clay adhering to the outlet of the outlet pipe 101, the embodiment of the present invention provides an automatic shearing device 100 for the mud outlet of the spiral excavator of the earth pressure balance shield machine, wherein the outer surfaces of the first shearing plate 106 of the first U-shaped shearing tool and the second shearing plate 108 of the second U-shaped shearing tool are both tooth surfaces. The tooth surface can divide the clay with a large cross section into clay with a small cross section for diameter shearing, so that the clay can be cut off more easily and the shearing effect is improved.

[0042] In order to prevent the cut clay from sticking to the first shear plate 106 and the second shear plate 108, the embodiment of the present invention provides an automatic shearing device 100 for the mud outlet of the spiral excavator of the earth pressure balance shield machine, wherein the tooth surface is coated with a paint coating. The paint coating can prevent the clay from sticking and make the cut clay fall off.

[0043] In order to improve the service life, the embodiment of the present invention provides an automatic shearing device 100 for the mud outlet of the spiral excavator of the earth pressure balance shield machine, wherein the tooth surface is formed by a hard alloy part welded on the surface of the shear plate, and the hard alloy part is edged and quenched. In this case, the tooth surface can improve the wear resistance and extend the service life.

[0044] In order to completely shear off the clay at the mud outlet, the automatic shearing device 100 for the mud outlet of the spiral excavator of the earth pressure balance shield machine provided in the embodiment of the present invention has the first rotating oil cylinder 103 and the second rotating oil cylinder 104 rotate at an angle greater than 90 degrees. For example, it can be 180 degrees, at which time the first shear plate 106 of the first U-shaped shear and the second shear plate 108 of the second U-shaped shear can exceed the horizontal center line of the outlet pipe 101, so that the first shear plate 106 and the second shear plate 108 form a staggered cross to shear and cut the clay.

[0045] Without considering dismantling the automatic shearing device 100 for maintenance, the automatic shearing device 100 of the mud outlet of the spiral excavator of the earth pressure balance shield machine provided by the embodiment of the present invention removes the outlet pipe 101, and the mud outlet pipe 110 of the spiral excavator replaces the outlet pipe 101. At this time, the automatic shearing device 100 and the spiral excavator are an integrated structure.

[0046] Please refer to Figure 2 In order to realize the mutual nesting and rotation of the first U-shaped shears and the second U-shaped shears, the automatic shearing device 100 of the mud outlet of the spiral excavator of the earth pressure balance shield machine provided in the embodiment of the present invention, the rotation radius of the first rotating arm 105 is greater than the rotation radius of the second rotating arm 107, at this time, the first U-shaped shears is located on the outside, and the second U-shaped shears is located on the inside.

[0047] In order to realize the mutual nesting and rotation of the first U-shaped shears and the second U-shaped shears, the automatic shearing device 100 of the mud outlet of the spiral excavator of the earth pressure balance shield machine provided in the embodiment of the present invention, the rotation radius of the first rotating arm 105 can be smaller than the rotation radius of the second rotating arm 107, at this time, the first U-shaped shears is located on the inside, and the second U-shaped shears is located on the outside.

[0048] The automatic shearing device 100 for the mud outlet of the spiral excavator of the earth pressure balance shield machine provided in the embodiment of the present invention has a shearing function, which can effectively solve the problem of equipment failure caused by clay adhesion at the mud outlet.

[0049] The present invention is not limited to the above-mentioned specific implementation modes. Obviously, the above-mentioned embodiments are only some embodiments of the embodiments of the present invention, but not all embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention. Those skilled in the art can make other levels of modifications and changes to the present invention. In this way, if these modifications and changes of the present invention fall within the scope of the claims of the present invention, the present invention is also intended to include these changes and changes.

Claims

1. An automatic shearing device for the mud outlet of a spiral excavator of an earth pressure balance shield machine, characterized in that: include: An outlet pipe is connected to the mud outlet pipe of the spiral excavator; There are two oil cylinder seats, which are respectively arranged on the left and right sides of the outlet pipe; A first rotating cylinder, disposed on one of the cylinder seats; A second rotating cylinder is arranged on the other cylinder seat, and the second rotating cylinder rotates in the opposite direction to the first rotating cylinder; There are two first rotating arms, one of which is located between the outlet pipe and the first oil cylinder seat and fixedly arranged on the rotating shaft of the first rotating oil cylinder, and the other first rotating arm is located between the outlet pipe and the second rotating oil cylinder and hingedly connected to the rotating shaft of the second rotating oil cylinder; A first shearing plate, disposed between the two first rotating arms, wherein the first shearing plate and the two first rotating arms form a first U-shaped shear; There are two second rotating arms, one of which is located between the outlet pipe and the second oil cylinder seat and fixedly arranged on the rotating shaft of the second rotating oil cylinder, and the other second rotating arm is located between the outlet pipe and the first oil cylinder seat and hingedly connected to the rotating shaft of the first rotating oil cylinder; The second shear plate is connected between the two second rotating arms. The second shear plate and the two second rotating arms form a second U-shaped shear. The second U-shaped shear and the first U-shaped shear are nested with each other. The rotation radius of the first U-shaped shear and the second U-shaped shear are both larger than the circumscribed circle radius of the outlet pipe and larger than the distance between the rotating axis and the outlet pipe.

2. The automatic shearing device for the mud outlet of the spiral excavator of the earth pressure balance shield machine according to claim 1 is characterized in that: The first rotary cylinder and the second rotary cylinder are both replaced by torque motors.

3. The automatic shearing device for the mud outlet of the spiral excavator of the earth pressure balance shield machine according to claim 1 is characterized in that: The outer surfaces of the first shear plate of the first U-shaped shears and the second shear plate of the second U-shaped shears are both tooth surfaces.

4. The automatic shearing device for the mud outlet of the spiral excavator of the earth pressure balance shield machine according to claim 1 is characterized in that: The tooth surface is coated with a paint coating.

5. The automatic shearing device for the mud outlet of the spiral excavator of the earth pressure balance shield machine according to claim 1, characterized in that: The tooth surface is formed by a hard alloy piece welded on the outer surface of the shear plate, and the hard alloy piece is edged and quenched.

6. The automatic shearing device for the mud outlet of the spiral excavator of the earth pressure balance shield machine according to claim 1, characterized in that: The rotation angles of the first rotating cylinder and the second rotating cylinder are both greater than 90 degrees.

7. The automatic shearing device for the mud outlet of the spiral excavator of the earth pressure balance shield machine according to claim 1, characterized in that: The outlet pipe is connected to the mud outlet pipe through a flange and flange bolts.

8. The automatic shearing device for the mud outlet of the spiral excavator of the earth pressure balance shield machine according to claim 1, characterized in that: The outlet pipe is removed and replaced by the mud outlet pipe of the screw excavator.

9. The automatic shearing device for the mud outlet of the spiral excavator of the earth pressure balance shield machine according to claim 1, characterized in that: The rotation radius of the first rotating arm is greater than the rotation radius of the second rotating arm, the first U-shaped shears is located on the outside, and the second U-shaped shears is located on the inside.

10. The automatic shearing device for the mud outlet of the spiral excavator of the earth pressure balance shield machine according to claim 1, characterized in that: The rotation radius of the first rotating arm is smaller than the rotation radius of the second rotating arm, the first U-shaped shears is located on the inner side, and the second U-shaped shears is located on the outer side.

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