Semi-embedded grouting and grease injection device for shield tunneling machine

Abstract

The semi-embedded grouting and grease injection device for the shield tunneling machine comprises a main body plate extending in the axial direction of a shield body of the shield tunneling machine, the main body plate is in an arc shape in the circumferential direction of the shield body, the radian of the main body plate is the same as that of the shield body, and a grouting channel, a grease injection channel and a sensor channel which extend in the axial direction of the shield body are arranged in the main body plate. One part of the main body plate is embedded in a through groove formed in a shell of the shield body to form an embedded part, the other part of the main body plate protrudes out of the shell to form a protruding part, the inner wall face of the embedded part is flush with the inner wall face of the shell, and the wall thickness of the protruding part is 0.8-1.0 time of the wall thickness of the shield body; the device combines the advantages of an external grouting and grease injection device and a groove milling type grouting and grease injection device, on the premise that the grouting and grease injection functions are achieved, the problems that protrusions are too high and prone to deformation are solved, the problem that a thin shell plate cannot be subjected to groove milling and can only be used through a thick shell plate is solved, modular production can be achieved, machining is convenient, and cost is low. And meanwhile, a space for mounting a shield tail gap sensor is also reserved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shield machine technical field, concretely relates to a half embedded grouting and greasing device for shield machine. BACKGROUND

[0002] The grouting and greasing device of shield machine usually includes two categories of external type and milling groove type, the external type is commonly known as tortoise shell, is welded grouting pipe and greasing pipe on the outer surface of tail shield shell plate, then uses the cover to cover these pipes and protects, as shown in Figure 1 and Figure 2 Since the grouting pipe diameter is larger (usually DN40), the plate material of the cover also has certain thickness, the device forms the protrusion of at least 60mm higher than the rear shield shell body on the tail shield, which not only increases the friction between the shield body and the hole wall, but also the protruding cover is easily deformed by the extrusion of the hole wall, the milling groove type is first milled in the shield tail shell plate, then the cover plate is added and welded on the milled groove to form the grouting and greasing channel, as shown in Figure 3 and Figure 4 The device needs the tail shield shell plate to be thick enough to mill the grouting and greasing groove of ideal depth, according to the experience of multiple shield projects, the thickness needs to reach at least 55mm, for some projects with shallow burial depth and small water and soil pressure, the shell plate is usually not used so thick. SUMMARY

[0003] The utility model discloses a half embedded grouting and greasing device for shield machine, which combines the advantages of external grouting and greasing device and milling groove grouting and greasing device, solves the problems of too high protrusion and easy deformation, and also solves the problem of needing thick shell plate for use, and can be produced modularly, convenient for processing.

[0004] To achieve the above object, the utility model provides a technical scheme that the half embedded grouting and greasing device for shield machine includes the main plate extending along the axial direction of the shield body, the main plate is arc-shaped in the circumferential direction of the shield body, the arc is same with the arc of the shield body, the main plate is provided with the grouting channel, the greasing channel and the sensor channel extending along the axial direction of the shield body, a part of the main plate is embedded in the through groove of the shell of the shield body to form the embedded part, another part protrudes outward from the shell to form the protruding part, the inner wall surface of the embedded part is flush with the inner wall surface of the shell, and the wall thickness of the protruding part is 0.8-1.0 times of the wall thickness of the shell.

[0005] Preferably, the outer wall surface of the convex part is provided with a plurality of grooves extending along the axial direction of the shield body and arranged at intervals, and the grooves are connected with cover plates, the outer wall surface of the cover plate is flush with the outer wall surface of the convex part, and the cavities surrounded by the groove walls of the plurality of grooves and the inner wall surfaces of the corresponding cover plates form the grouting channel, the grease injection channel and the sensor channel respectively.

[0006] Further preferably, the inner wall surface of the embedded part is provided with a grouting observation slot communicating with the grouting channel, and the grouting observation slot is embedded with a grouting observation window.

[0007] Further preferably, the grouting observation window comprises a window body and a transparent plate embedded on the window body, the cross section of the window body is in the shape of a U, and the transparent plate is located in the middle of the window body.

[0008] Further preferably, the grooves are countersunk grooves, and the cover plates are embedded in the countersunk heads of the grooves.

[0009] Preferably, the tail part of the shell is provided with a grouting outlet, a grease injection outlet and a sensor mounting groove, the grouting outlet is arranged on the tail end surface of the shell and communicates with the grouting channel in a direction parallel to the axial line of the shield body, the grease injection outlet is arranged on the inner wall surface of the shell and communicates with the grease injection channel in the radial direction of the shield body, the sensor mounting groove is arranged on the inner wall surface of the shell for mounting a shield tail gap sensor, and the bottom wall of the sensor mounting groove is provided with a communication hole communicating with the sensor channel.

[0010] Preferably, the semi-embedded grouting and grease injection device for a shield tunneling machine further comprises an auxiliary plate connected between the two side walls of the convex part and the outer wall surface of the shell.

[0011] Preferably, the semi-embedded grouting and grease injection device for a shield tunneling machine further comprises a connecting block arranged in the through groove and connected with the head part of the main plate, and the connecting block is provided with radial through grooves corresponding to the grouting channel, the grease injection channel and the sensor channel.

[0012] Further preferably, the radial through groove corresponding to the grouting channel is provided with a grouting transition block for mounting a grouting pipe, the radial through groove corresponding to the grease injection channel is provided with a grease injection transition block for mounting a grease injection pipe and a grease injection bottom plate for covering, and the radial through groove corresponding to the sensor channel is provided with a sensor bottom plate for covering.

[0013] Preferably, the main plate is a plurality of and uniformly distributed along the axial line of the shield body.

[0014] Thanks to the above technical scheme, the utility model has the following advantages compared with the prior art:

[0015] The semi-embedded grouting and greasing device for the shield machine has the advantages that the device combines the advantages of the external grouting and greasing device and the milling groove type grouting and greasing device, solves the problems of too high protrusion and easy deformation under the premise of meeting the grouting and greasing function, solves the problem that a relatively thin shell plate cannot be milled and needs a relatively thick shell plate to be used, can be modularly produced, is convenient to process, and also leaves space for installing a shield tail gap sensor. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of an external grouting and greasing device in the prior art.

[0017] Figure 2 is a partial enlarged view of A in Figure 1

[0018] Figure 3 is a structural schematic view of an embedded grouting and greasing device in the prior art.

[0019] Figure 4 is a partial enlarged view of B in Figure 3

[0020] Figure 5 is a structural schematic view of a preferred embodiment of the utility model.

[0021] Figure 6 is a partial view of C direction in Figure 5

[0022] Figure 7 is a sectional view of D-D direction in Figure 6

[0023] Figure 8 is a sectional view of E-E direction in Figure 6

[0024] Figure 9 is a sectional view of F-F direction in Figure 8

[0025] Figure 10 is a sectional view of G-G direction in Figure 8 ​​​​​​​

[0026] Figure 11 is Figure 8 is a sectional view along the H-H direction in the figure.

[0027] Wherein: 1. The shell; 2. The through slot; 3. Grouting outlet; 4. Grease injection outlet; 5. Sensor installation slot; 6. Shield tail gap sensor; 7. Communication hole; 8. Grouting pipe; 9. Grease injection pipe; 10. Main plate; 10a. Embedded part; 10b. Protruding part; 11. Grouting channel; 12. Grease injection channel; 13. Sensor channel; 14a. Grouting groove; 14b. Grease injection groove; 14c. Sensor groove; 15a. Grouting cover plate; 15b. Grease injection cover plate; 15c. Sensor cover plate; 16. Grouting observation slot; 17. Grouting observation window; 171. Window body; 172. Transparent plate; 20. Auxiliary plate; 30. Lead block; 31. Radial slot; 32. Grouting transition block; 33. Grease injection transition block; 34. Grease injection bottom plate; 35. Sensor bottom plate. DETAILED DESCRIPTION

[0028] As Figures 5 to 11 shown, the grouting and grease injection device for shield machine provided by the utility model, including the main plate 10 extending along the axial direction of the shield machine shield body, the main plate 10 is arc-shaped in the circumferential direction of the shield body, and the arc degree is same with the arc degree of the shield body, the main plate 10 is equipped with the grouting channel 11, the grease injection channel 12 and the sensor channel 13 extending along the axial direction of the shield body, a part of the main plate 10 is embedded in the through slot 2 of the shell 1 of the shield body and forms the embedded part 10a, another part protrudes outward from the shell 1 and forms the protruding part 10b, the inner wall surface of the embedded part 10a is flush with the inner wall surface of the shell 1, and the wall thickness of the protruding part 10b is equal to the wall thickness of the shell 1.

[0029] The advantages of the arrangement are that the advantages of the external grouting and grease injection device and the milling slot grouting and grease injection device are combined, the problem of too high and easy deformation is solved under the premise of meeting the grouting and grease injection function, the problem of thin shell plate cannot be milled and needs thick shell plate to use is solved, modular production can be realized, processing is convenient, and space for installing the shield tail gap sensor is left at the same time.

[0030] In the embodiment, the outer wall surface of the protruding part 10b is provided with five grooves extending along the axial direction of the shield body and arranged at intervals, which are grouting grooves 14a, grease injection grooves 14b and sensor grooves 14c, wherein the grouting grooves 14a and the grease injection grooves 14b are each two and symmetrically distributed on both sides of the sensor grooves 14c, and the grooves are further connected with cover plates, which include grouting cover plates 15a connected with the grouting grooves 14a, grease injection cover plates 15b connected with the grease injection grooves 14b, and sensor cover plates 15c connected with the sensor grooves 14c, the outer wall surfaces of the cover plates are flush with the outer wall surface of the protruding part 10b, the cavity formed by the groove wall of the grouting groove 14a and the inner wall surface of the grouting cover plate 15a constitutes a grouting channel 11, the cavity formed by the groove wall of the grease injection groove 14b and the inner wall surface of the grease injection cover plate 15b constitutes a grease injection channel 12, and the cavity formed by the sensor groove 14c and the inner wall surface of the sensor cover plate 15c constitutes a sensor channel 13; further, the grouting grooves 14a, the grease injection grooves 14b and the sensor grooves 14c are all countersunk grooves, and the grouting cover plates 15a, the grease injection cover plates 15b and the sensor cover plates 15c are respectively embedded in the countersunk grooves.

[0031] The inner wall surface of the embedded part 10a is provided with a grouting observation slot 16 communicating with the grouting channel 11, and the grouting observation slot 16 is embedded with a grouting observation window 17, which includes a window body 171 and a transparent plate 172 embedded on the window body 171, the cross section of the window body 171 is in the shape of a U, and the transparent plate 172 is located in the middle part of the window body 171.

[0032] In the embodiment, the tail part of the shell 1 is provided with a grouting outlet 3, a grease injection outlet 4 and a sensor mounting groove 5, the grouting outlet 3 is arranged on the tail end surface of the shell 1 and communicates with the grouting channel 11 in a direction parallel to the axial center line of the shield body, the grease injection outlet 4 is arranged on the inner wall surface of the shell 1 and communicates with the grease injection channel 12 in the radial direction of the shield body, and the sensor mounting groove 5 is arranged on the inner wall surface of the shell 1 for mounting the tail gap sensor 6, and the bottom wall of the sensor mounting groove 5 is provided with a communication hole 7 communicating with the sensor channel 13.

[0033] The semi-embedded grouting and greasing device of the shield machine further comprises an auxiliary plate 20 and a connecting block 30, the auxiliary plate 20 is obliquely connected between the two side walls of the protruding part 10b and the outer wall surface of the shell 1, the connecting block 30 is arranged in the through groove 2 and is connected with the head of the main plate 10, the connecting block 30 is provided with radial through grooves 31 corresponding to the grouting channel 11, the greasing channel 12 and the sensor channel 13, wherein the radial through groove 31 corresponding to the grouting channel 11 is provided with a grouting transition block 32 for mounting the grouting pipe 8, the radial through groove 31 corresponding to the greasing channel 12 is provided with a greasing transition block 33 for mounting the greasing pipe 9 and a greasing bottom plate 34 for covering, and the radial through groove 31 corresponding to the sensor channel 13 is provided with a sensor bottom plate 35 for covering.

[0034] In the embodiment, the main plate 10 has four and is evenly distributed along the axial line of the shield body.

[0035] In actual production, a plate with a certain arc length and appropriate thickness is selected, the grouting groove, the greasing groove and the sensor groove meeting the requirements are milled on the plate, then the corresponding cover plates are welded, only the channels in the middle of the thickness of the plate are left to form the main plate, the grouting channel directly leads to the tail part of the shell and can grout the shield tail gap, the greasing channel leads to the sealing grease cavity between the two shield tail brushes to supplement the sealing grease in time, and the sensor channel leads to the sensor mounting groove to facilitate the arrangement of the sensor cable; meanwhile, a plurality of grouting observation grooves are arranged on the part corresponding to the grouting groove of the plate, and grouting observation windows are mounted on the grouting observation grooves, which can be opened to dredge when grouting is blocked.

[0036] The connecting block is a place for mounting the grouting and greasing transition blocks, and grooves are left at the corresponding positions of the grouting and greasing, the grouting groove is welded with the grouting transition block, and the greasing position is provided with the greasing block, the greasing bottom plate and the greasing pipe, the purpose is to lead the grouting and greasing channels to the inside of the shell and facilitate the connection of the subsequent pipes.

[0037] The main block is located at the rear part of the shell, and the connecting block is located at the front part of the shell, and both are semi-embedded in the shell, since the protruding part forms a height difference, which is not conducive to the stability of the structure, therefore, the inclined auxiliary plate is arranged at the position of the height difference to further reinforce the connection between the protruding part and the shell, thus, the semi-embedded grouting and greasing device is formed, which is stable in structure, can realize grouting and greasing, and can also install sensors.

[0038] The above embodiment is only for illustrating the technical concept and characteristics of the utility model, the purpose is to enable the person skilled in the art to understand the content of the utility model and implement it, and cannot limit the protection scope of the utility model, any equivalent change or modification according to the spirit and essence of the utility model shall be covered in the protection scope of the utility model.

Claims

1. A semi-embedded grouting and greasing device for a shield tunneling machine, characterized in that, The shield includes a main plate extending along the axial direction of the shield body. The main plate is arc-shaped in the circumferential direction of the shield body, and its curvature is the same as that of the shield body. The main plate is provided with grouting channels, grease injection channels, and sensor channels extending along the axial direction of the shield body. A part of the main plate is embedded in a through groove opened on the shell of the shield body to form an embedded part, and another part protrudes outward from the shell to form a protruding part. The inner wall surface of the embedded part is flush with the inner wall surface of the shell, and the wall thickness of the protruding part is 0.8-1.0 times the wall thickness of the shell.

2. The semi-embedded grouting and greasing device for a tunneling machine according to claim 1, characterized in that: The outer wall of the protrusion has multiple grooves that extend along the axial direction of the shield and are spaced apart. A cover plate is connected to the groove. The outer wall of the cover plate is flush with the outer wall of the protrusion. The cavity formed by the groove walls of the multiple grooves and the inner wall of the corresponding cover plate constitutes the grouting channel, the grease injection channel, and the sensor channel, respectively.

3. The semi-embedded grouting and greasing device for a tunneling machine according to claim 2, characterized in that: The inner wall of the embedded part is provided with a grouting observation groove that communicates with the grouting channel, and a grouting observation window is embedded in the grouting observation groove.

4. The semi-embedded grouting and greasing device for a tunneling machine according to claim 3, characterized in that: The grouting observation window includes a window body and a transparent plate embedded in the window body. The cross-section of the window body is shaped like a "Z" and the transparent plate is located in the middle of the window body.

5. The semi-embedded grouting and greasing device for a tunneling machine according to claim 2, characterized in that: The groove is a countersunk groove, and the cover plate is embedded in the countersunk end of the groove.

6. The semi-embedded grouting and greasing device for a tunneling machine according to claim 1, characterized in that: The tail end of the housing is provided with a grouting outlet, a grease injection outlet, and a sensor mounting slot. The grouting outlet is located on the tail end face of the housing and is connected to the grouting channel in a direction parallel to the shield body's axis. The grease injection outlet is located on the inner wall surface of the housing and is connected to the grease injection channel in the radial direction of the shield body. The sensor mounting slot is located on the inner wall surface of the housing for mounting a shield tail gap sensor. The bottom wall of the sensor mounting slot is provided with a connecting hole that communicates with the sensor channel.

7. The semi-embedded grouting and greasing device for a tunneling machine according to claim 1, characterized in that: The semi-embedded grouting and grease injection device for the tunnel boring machine also includes an auxiliary plate, which is connected between the two side walls of the protrusion and the outer wall of the shell.

8. The semi-embedded grouting and greasing device for a tunneling machine according to claim 1, characterized in that: The semi-embedded grouting and grease injection device for the tunnel boring machine also includes a guide block. The guide block is disposed in the through groove and is connected to the head of the main body plate. The guide block is provided with radial through grooves corresponding to the grouting channel, the grease injection channel and the sensor channel.

9. The semi-embedded grouting and greasing device for a tunneling machine according to claim 8, characterized in that: A grouting transition block for installing a grouting pipe is provided in the radial through groove corresponding to the grouting channel; a grease injection transition block for installing a grease injection pipe and a grease injection base plate for sealing are provided in the radial through groove corresponding to the grease injection channel; a sensor base plate for sealing is provided in the radial through groove corresponding to the sensor channel.

10. The semi-embedded grouting and greasing device for a tunneling machine according to claim 1, characterized in that: The main body plate has multiple plates and is evenly distributed along the axis of the shield body.

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