Auxiliary device for opening and closing slurry pipe valve of slurry shield machine

Abstract

The utility model provides an auxiliary device for opening and closing a slurry pipe valve of a slurry shield machine, which comprises a hollow cylindrical tubular inner sleeve and a nut which is sleeved on the outer side of the inner sleeve and is matched with a socket of an electric wrench, and an inner key groove and an inner thread which extend to the end face of the inner sleeve are respectively arranged at two end parts of the inner wall of the inner sleeve. An inner key groove is formed in the inner sleeve, an inner key matched with a key pin shaft of the gate valve is embedded in the inner key groove, an inner thread is matched with a threaded shaft of the gate valve, an outer key groove where an outer key is embedded is formed in the outer wall of the inner sleeve, a groove is formed in the inner wall of the nut, and the part, protruding out of the inner sleeve, of the outer key is embedded into the groove. Rapid opening and closing are achieved, potential safety hazards are eliminated, the direction can be changed through the inner sleeve, the device adapts to two gate valve shaft bodies of a threaded shaft and a key pin shaft, and adaptability is good.

Description

Technical Field

[0001] This utility model relates to the field of shield machine valve technology, specifically to an auxiliary device for switching the slurry pipe valve of a slurry shield machine. Background Technology

[0002] With the continuous development of cross-river and cross-sea tunnel projects, slurry shield tunneling machines are increasingly widely used in the construction of large tunnels. During the tunneling process, the laying and replacement of slurry pipes are very frequent, placing higher demands on the operation of slurry pipe valves. Most common slurry pipe valves are large-diameter (50cm) gate valves, such as... Figure 1 As shown, its switching operation depends on the ring handle 2, such as Figure 2 As shown, the annular handle 2 is sleeved on the gate valve shaft 3. The gate valve 1 is opened and closed by manually rotating the annular handle 2. However, this method is inefficient and cannot respond quickly in emergency situations, posing a safety hazard. At the same time, the gate valve shaft 3 includes both threaded shafts and keyed shafts. If an electric wrench is used to drive the gate valve shaft 3 directly, it is difficult to use universally and has poor adaptability. Utility Model Content

[0003] The purpose of this invention is to overcome one or more shortcomings in the prior art and provide an auxiliary device for switching the slurry pipe valve of a slurry shield tunneling machine.

[0004] To achieve the above objectives, the product provided by this utility model is an auxiliary device for switching the slurry pipe valve of a slurry shield tunneling machine, comprising:

[0005] Inner sleeve, wherein the inner sleeve is in the shape of a hollow cylindrical tube;

[0006] A nut, which is fitted onto the outside of the inner sleeve and matches the socket of the electric wrench;

[0007] The inner sleeve has an internal keyway and an internal thread at both ends of its inner wall. The internal keyway and the internal thread extend to the end face of the inner sleeve. The internal keyway is fitted with an internal key that matches the key pin of the gate valve, and the internal thread matches the threaded shaft of the gate valve. The outer wall of the inner sleeve has an external keyway, in which an external key is fitted. The inner wall of the nut has a groove, and the portion of the external key that protrudes from the inner sleeve is embedded in the groove, so that the nut can drive the inner sleeve to rotate.

[0008] Preferably, the groove extends through the nut in the axial direction.

[0009] Further preferably, the two ends of the inner sleeve are also provided with radial threaded through holes, the radial threaded through holes are internally threaded connected with limiting bolts, the inner end of the limiting bolt does not exceed the inner wall of the inner sleeve, and the outer end of the limiting bolt protrudes from the outer wall of the inner sleeve to prevent the nut from being separated from the inner sleeve.

[0010] Further preferably, the two ends of the inner wall of the nut are provided with annular limiting grooves for accommodating the outer end of the limiting bolt, the annular limiting grooves are connected with the grooves and pass through the end face of the nut.

[0011] Further preferably, the limiting bolt is a spring plunger bolt, the ball head end of the spring plunger bolt is outward, and when the end face of the nut is flush with the end face of the inner sleeve, the ball head end is tightly pressed in the annular limiting groove.

[0012] Preferably, the inner key groove is arranged at intervals with the inner thread.

[0013] Preferably, the outer key groove has a plurality of outer key grooves, and the plurality of outer key grooves are uniformly distributed along the axial line of the inner sleeve.

[0014] Further preferably, one of the outer key grooves corresponds to and passes through the inner key groove, and the outer key in the outer key groove and the inner key are integrally formed.

[0015] Preferably, the length of the outer key groove is not less than 80% of the length of the inner sleeve.

[0016] Preferably, the inner key is welded with the inner key groove, and the outer key is welded with the outer key groove.

[0017] Due to the above technical scheme, the utility model has the following advantages compared with the prior art:

[0018] The utility model provides a mud water shield machine mud pipe valve switch's auxiliary device, including the inner sleeve and the nut of hollow cylindrical tubulature of setting in the inner sleeve outside and with electric wrench sleeve match, through setting up the inner key groove and the inner thread of extending to the end face of the inner sleeve respectively in the two ends of the inner sleeve inner wall, make the inner key groove embed with the inner key of matching with the key pin axle of the gate valve, make the inner thread with the thread axle of the gate valve match, set up the outer key groove of embedding with the outer key in the outer wall of the inner sleeve, set up the recess in the nut inner wall, make the part of the outer key protruding from the inner sleeve embed in the recess, can drive the inner sleeve rotation through the nut, realize quick switch, eliminate the security risk, can also turn the direction through the inner sleeve, adapt the thread axle and the key pin axle two gate valve axle body, and the adaptability is good. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the schematic diagram of the prior art gate valve.

[0020] Figure 2 is a schematic view of the annular handle of the gate valve in the prior art.

[0021] Figure 3 is a top view of the embodiment one of the utility model.

[0022] Figure 4 is Figure 3 a sectional view in A-A direction.

[0023] Figure 5 is Figure 3 a sectional view in B-B direction.

[0024] Figure 6 is a top view of the embodiment two of the utility model.

[0025] Figure 7 is Figure 6 a sectional view in C-C direction.

[0026] Figure 8 is Figure 6 a sectional view in D-D direction.

[0027] Wherein: 1. gate valve; 2. annular handle; 3. gate valve shaft body; 10. inner sleeve; 11. inner key groove; 12. inner thread; 13. inner key; 14. outer key groove; 15. outer key; 16. radial threaded through hole; 17. limit bolt; 20. nut; 21. groove; 22. annular limit groove. DETAILED DESCRIPTION

[0028] Embodiment one

[0029] As Figures 3 to 5 shown, the utility model provides a supplementary device for mud water shield machine mud pipe valve switch, include: inner sleeve 10, nut 20, wherein, inner sleeve 10 is hollow cylindrical tubulose; nut 20 is set up in the outside of inner sleeve 10, and nut 20 is matched with the sleeve of electric wrench;The both ends of inner sleeve 10 inner wall are equipped with inner key groove 11 and inner thread 12 respectively, and inner key groove 11 and inner thread 12 extend to the end face of inner sleeve 10, and inner key groove 11 is embedded with inner key 13 matched with the key pin shaft of gate valve, and inner thread 12 is matched with the threaded shaft of gate valve;The outer wall of inner sleeve 10 is equipped with outer key groove 14, and outer key 15 is embedded in outer key groove 14, and the inner wall of nut 20 is equipped with groove 21, and the part of outer key 15 protruding from inner sleeve 10 is embedded in groove 21, when electric wrench rotates through sleeve and drives nut 20, can drive inner sleeve 10 to rotate by using nut 20, to make the key pin shaft or threaded shaft of gate valve rotate, realize quick switch, eliminate security risks, can also be turned over by inner sleeve direction, adapt threaded shaft and key pin shaft two gate valve shaft body, and good adaptability.

[0030] In this embodiment, the groove 21 penetrates the nut 20 along the axial direction to facilitate fitting. To prevent the nut 20 from detaching, the inner sleeve 10 is further provided with radial threaded through holes 16 at both ends. The radial threaded through holes 16 are internally threaded with limit bolts 17. The inner end of the limit bolts 17 does not extend beyond the inner wall of the inner sleeve 10, and the outer end of the limit bolts 17 protrudes beyond the outer wall of the inner sleeve 10 to prevent the nut 20 from detaching from the inner sleeve 10.

[0031] To facilitate alignment, the inner wall of the nut 20 is further provided with annular limiting grooves 22 at both ends to accommodate the outer end of the limiting bolt 17. The annular limiting grooves 22 are connected to the grooves 21 and penetrate the end face of the nut 20.

[0032] In this embodiment, the inner keyway 11 and the inner thread 12 are spaced apart, and there are four outer keyways 14. These four outer keyways 14 are evenly distributed along the axis of the inner sleeve 10. Preferably, the length of the outer keyway 14 is not less than 80% of the length of the inner sleeve 10. Specifically, in this embodiment, the length of the outer keyway 14 is 90% of the length of the inner sleeve 10, and the length of the inner sleeve 10 at both ends is 10% of the total length of the inner sleeve 10. To prevent it from falling off, the inner key 13 is welded to the inner keyway 11 after installation, and the outer key 15 is welded to the outer keyway 14 after installation.

[0033] Example 2

[0034] like Figures 6 to 8 As shown, Embodiment 2 is basically the same as Embodiment 1, except that in Embodiment 2, the limiting bolt 17 is a spring plunger bolt with the ball head facing outward. When the end face of the nut 20 is flush with the end face of the inner sleeve 10, the ball head is squeezed into the annular limiting groove 22. This arrangement can control the nut 20 at the upper or lower end of the inner sleeve 10 to cooperate with the socket of the electric wrench when the inner sleeve 10 is installed in the forward or reverse direction.

[0035] In this embodiment, the external keyway 14 extends through the inner sleeve 10 along the axial direction. One of the external keyways 14 corresponds to and communicates with the inner keyway 11. The external key 15 and the inner key 13 located in the external keyway 14 are integrally formed. This arrangement enables the torque to be directly transmitted using the integrally formed part, which is more efficient.

[0036] The auxiliary device for mud water shield machine mud pipe valve switch can cooperate with the electric wrench to quickly switch the gate valve, can improve construction efficiency, and reduces labor intensity; the switching time of the gate valve can be shortened to 2-5 minutes by cooperating with the electric wrench adapter of the auxiliary device to switch the gate valve, and the valve switching efficiency can be greatly improved, and timely response can be achieved when facing an emergency.

[0037] The above examples are only for illustrating the technical concept and characteristics of the utility model, and the purpose is to enable people skilled in the art to understand the content of the utility model and implement it, and it cannot limit the protection scope of the utility model, and equivalent changes or modifications according to the spirit and essence of the utility model should be covered in the protection scope of the utility model.

Claims

1. An auxiliary device for switching on / off the slurry pipe valve of a slurry shield tunneling machine, comprising: Inner sleeve, wherein the inner sleeve is in the shape of a hollow cylindrical tube; A nut, which is fitted onto the outside of the inner sleeve and matches the socket of the electric wrench; Its features are: The inner sleeve has an internal keyway and an internal thread at both ends of its inner wall. The internal keyway and the internal thread extend to the end face of the inner sleeve. The internal keyway is fitted with an internal key that matches the key pin of the gate valve, and the internal thread matches the threaded shaft of the gate valve. The outer wall of the inner sleeve has an external keyway, in which an external key is fitted. The inner wall of the nut has a groove, and the portion of the external key that protrudes from the inner sleeve is embedded in the groove, so that the nut can drive the inner sleeve to rotate.

2. The auxiliary device for switching the slurry pipe valve of a slurry shield tunneling machine according to claim 1, characterized in that: The groove extends through the nut in the axial direction.

3. The auxiliary device for switching the slurry pipe valve of a slurry shield tunneling machine according to claim 2, characterized in that: The inner sleeve is also provided with radial threaded through holes at both ends. The radial threaded through holes are internally threaded with limit bolts. The inner end of the limit bolt does not extend beyond the inner wall of the inner sleeve, and the outer end of the limit bolt protrudes beyond the outer wall of the inner sleeve to prevent the nut from disengaging from the inner sleeve.

4. The auxiliary device for switching the slurry pipe valve of a slurry shield tunneling machine according to claim 3, characterized in that: The inner wall of the nut is provided with annular limiting grooves at both ends to accommodate the outer end of the limiting bolt. The annular limiting grooves are connected to the groove and penetrate the end face of the nut.

5. The auxiliary device for switching the slurry pipe valve of a slurry shield tunneling machine according to claim 3, characterized in that: The limiting bolt is a spring plunger bolt with the ball head facing outward. When the end face of the nut is flush with the end face of the inner sleeve, the ball head is squeezed into the annular limiting groove.

6. The auxiliary device for switching the slurry pipe valve of a slurry shield tunneling machine according to claim 1, characterized in that: The internal keyway and the internal thread are spaced apart.

7. The auxiliary device for switching the slurry pipe valve of a slurry shield tunneling machine according to claim 1, characterized in that: There are multiple external keyways, and the multiple external keyways are evenly distributed along the axis of the inner sleeve.

8. The auxiliary device for switching the slurry pipe valve of a slurry shield tunneling machine according to claim 7, characterized in that: One of the external keyways corresponds to and communicates with the internal keyway, and the external key located in the external keyway and the internal key are integrally formed.

9. The auxiliary device for switching the slurry pipe valve of a slurry shield tunneling machine according to claim 1, characterized in that: The length of the external keyway is not less than 80% of the length of the inner sleeve.

10. The auxiliary device for switching the slurry pipe valve of a slurry shield tunneling machine according to claim 1, characterized in that: The internal key is welded to the internal keyway, and the external key is welded to the external keyway.

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