A synchronous grouting pump suction device for shield machine

Abstract

The present invention discloses a synchronous grouting pump suction device for a shield machine, comprising a grouting machine and a connecting valve and a feed valve arranged on the grouting machine, and further comprising: a turntable, which is arranged on the bottom port of the connecting valve, and a closing disk is rotatably arranged on the turntable, which is used to block the connecting valve; a bearing plate, which is arranged on the turntable, and a connecting rod is arranged on the bearing plate. The synchronous grouting pump suction device for a shield machine provided by the present invention rotates the bearing plate, and synchronously links the closing disk on the turntable to rotate, so that the closing disk gradually rotates and closes, and the three closing disks are combined to form a disc shape, the diameter of which is larger than the feed pipe diameter of the connecting valve, which is convenient for blocking the pipe. At this time, the staff can remove the feed valve, and the mortar in the connecting valve is restricted by the closing disk, so that when the two valves are separated, the mortar is weakened or even prevented from flowing into the notch on the feed valve, which is convenient for the staff to replace the sealing gasket.

Description

Technical Field

[0001] The invention relates to the technical field of synchronous grouting of shield machines, and in particular to a synchronous grouting pump suction device for shield machines. Background Art

[0002] A shield machine is a machine used for excavating underground tunnels. It is well known that when the shield machine is under construction, after the segments are assembled and ejected from the shield tail, an annular gap will be formed between the segments and the outer wall of the tunnel. In order to avoid ground deformation and ground subsidence, synchronous grouting is required in this process. Grouting can suppress ground deformation, partially stabilize the segments, prevent them from shifting, and improve the tunnel's anti-seepage ability.

[0003] For example, the utility model with publication number CN207093091U, titled "Synchronous Grouting Pump Suction Transition Device and Shield Machine Synchronous Grouting System", and authorized publication date 20180313, includes a transition connecting plate and a welding flange, which respectively correspond to the suction port of the grouting pump and the discharge port of the mortar storage mixing tank; and a transition suction pipe, which is connected between the transition connecting plate and the welding flange, and includes a main pipe section and at least one arc-shaped transition pipe section, and the transition pipe section is smoothly transitioned and connected to the main pipe section.

[0004] The shortcoming of the prior art including the above-mentioned patent is that, since synchronous grouting requires the use of a grouting pump, the sealing gasket located between the connecting valve and the feed valve on the grouting pump needs to be replaced regularly due to wear and tear by the sand and gravel in the mortar. When replacing, the connecting valve and the feed valve are disassembled, and the mortar in the connecting valve will flow out at this time, causing the mortar to flow into the groove on the feed valve where the sealing gasket is placed, making it inconvenient to replace the sealing gasket, thereby reducing the efficiency of replacing the sealing gasket. Summary of the invention

[0005] In view of the above-mentioned problems existing in the prior art, one aspect of the present invention is to provide a synchronous grouting pump suction device for a shield machine to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a shield machine synchronous grouting pump suction device, including a grouting machine and a connecting valve and a feed valve arranged on the grouting machine, and also includes: a turntable, which is arranged on the bottom port of the connecting valve, and a closing disk is rotatably arranged on the turntable, which is used to block the connecting valve; a bearing plate, which is arranged on the turntable, and a connecting rod is arranged on the bearing plate, one end of the connecting rod is connected to the closing plate, a force block is arranged on the outer wall of the bearing plate, and an insert block is arranged on the feed valve, and the insert block is connected to the force block; when the connecting valve is blocked, the feed valve is linked to the force block through the insert block. The force block rotates, and under the cooperation of the supporting plate and the connecting rod, the closing plate rotates and closes to seal the connecting valve; the chuck is used to place the sealing gasket, the chuck is inserted into the connecting valve, and the chuck is located on the top of the supporting plate, a protrusion is provided on the top of the supporting plate, an arc groove is provided on the chuck, and a limiting block is slidably provided on the side of the chuck away from the arc groove, the protrusion is located in the arc groove, a shelf groove is provided on the chuck, a wedge block is provided on the shelf groove, a boss is provided on the supporting plate, a first elastic member is provided on the boss, and the first elastic member is located in the shelf groove.

[0007] Preferably, a circular groove is provided on the connecting valve, the rotating disk is located in the circular groove, and the diameter of the rotating disk is smaller than the diameter of the circular groove.

[0008] Preferably, a closed space is formed between the outer wall of the turntable and the inner wall of the circular groove, and the supporting plate covers the turntable and is located in the closed space.

[0009] Preferably, a guide groove is provided on the connecting valve, and the force-bearing block is located in the guide groove. When the feed valve contacts the connecting valve, the insert block is located in the guide groove and is engaged with the force-bearing block.

[0010] Preferably, when the carrying plate rotates, the protrusion moves along the arc groove, and during this stroke the protrusion abuts against the limit block, so that the limit block slides upward.

[0011] Preferably, when the carrying plate rotates, the first elastic member moves along the shelf groove, and during this stroke, the first elastic member abuts against the wedge block.

[0012] Preferably, a reset groove is provided on the wedge block, and a second elastic member is provided on one side of the wedge block located at the reset groove.

[0013] Preferably, a protrusion is provided on one side of the wedge block adjacent to the reset groove, and when the first elastic member abuts against the wedge block, the first elastic member contacts the protrusion during the stroke to limit the first elastic member from entering the reset groove.

[0014] In the above technical scheme, a synchronous grouting pump suction device for a shield machine provided by the present invention has the following beneficial effects: in the invention, the bolts used for connecting the connecting valve and the feed valve are removed, and then the feed valve is rotated so that the plug block is linked to the force-bearing block located in the connecting valve, thereby allowing the bearing plate to rotate accordingly. During the movement of the bearing plate, the closing plate located on the turntable is synchronously linked to rotate by a connecting rod hinged at the bottom. As the bearing plate rotates, the closing plate gradually rotates and closes. When closed, the three closing plates are combined to form a disc shape. The diameter of the disc shape is larger than the diameter of the feed pipe of the connecting valve, which is convenient for blocking the pipe. When the connecting valve pipe is closed, the staff can remove the feed valve at this time. When removing it, the mortar in the connecting valve is restricted by the closing plate, so that when the two valves are separated, the mortar is weakened or even prevented from flowing into the groove on the feed valve, which is convenient for the staff to replace the sealing gasket. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the sealing gasket and the connecting valve structure of the present invention;

[0018] Figure 3 It is a schematic diagram of the explosion structure of the turntable, the carrying plate and the chuck of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure after the carrier plate and the connecting valve of the present invention are installed;

[0020] Figure 5 This is a schematic diagram of the explosion structure of the rotary disk and the connecting valve of the present invention;

[0021] Figure 6 This is a schematic diagram of the structure of the carrier plate of the present invention;

[0022] Figure 7 It is a schematic diagram of the structure of the carrier plate and the closing plate in another state of the present invention;

[0023] Figure 8 It is a schematic diagram of the explosion structure of the connecting rod and the closing disk of the present invention;

[0024] Fig. 9 This is a schematic diagram of the bottom structure of the turntable and the carrier plate of the present invention;

[0025] Fig.10 It is a schematic diagram of the partial internal cross-sectional structure of the protrusion and the arc groove of the present invention;

[0026] Fig.11 It is a schematic diagram of the partial internal cross-sectional structure of the limit block and the protrusion of the present invention;

[0027] Fig.12 It is a schematic diagram of the structure of the limit block and the sealing gasket of the present invention;

[0028] Fig.13 It is a schematic diagram of the local structure of the wedge block of the present invention;

[0029] Fig.14 It is a schematic diagram of the partial structure of the first elastic member and the wedge block of the present invention;

[0030] Fig.15 It is a schematic diagram of the partial structure of the first elastic member and the second elastic member of the present invention;

[0031] Fig.16 It is a schematic diagram of the partial internal cross-sectional structure of the boss and the chuck of the present invention;

[0032] Fig.17 It is a schematic diagram of the sealing gasket and the chuck structure of the present invention;

[0033] Fig.18 It is a schematic diagram of the local structure of the slide groove and the convex seat of the present invention;

[0034] Fig.19 It is a schematic diagram of the partial structure of the closing disk and the connecting rod of the present invention;

[0035] Fig. 20 It is a schematic diagram of the partial structure of the placement tank and the discharge tank of the present invention;

[0036] Fig.21 This is a schematic diagram of the bottom structure of the feed valve of the present invention;

[0037] Fig. 22 It is a schematic diagram of the partial explosion structure of the insert block and the force-bearing block of the present invention;

[0038] Fig.23 It is a structural schematic diagram of another state of partial explosion of the insert block and the force-bearing block of the present invention.

[0039] Description of reference numerals:

[0040] 1. Grouting machine; 2. Feed valve; 3. Sealing pad; 4. Turntable; 5. Carrying plate; 6. Chuck; 101. Connecting valve; 102. Guide groove; 201. Insert block; 401. Placement groove; 402. Closing plate; 403. Drain groove; 501. Force block; 502. Boss; 503. First elastic member; 504. Connecting rod; 601. Arc groove; 602. Boss; 603. Limit block; 604. Shelving groove; 605. Wedge block; 606. Protrusion; 607. Reset groove; 608. Second elastic member; 609. Slide groove. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0042] See also Figure 1-23 The synchronous grouting pump suction device of the shield machine is used to solve the problem that the synchronous grouting requires the use of a grouting pump. The sealing gasket located between the connecting valve and the feed valve on the grouting pump needs to be replaced regularly due to the wear of the sand and gravel in the mortar. When replacing, the connecting valve and the feed valve are disassembled, and the mortar in the connecting valve will flow out at this time, so that the mortar will flow into the groove of the feed valve where the sealing gasket is placed, which makes it inconvenient to replace the sealing gasket, thereby reducing the efficiency of replacing the sealing gasket.

[0043] As a further technical solution proposed by the present invention, the grouting machine 1 and the connecting valve 101 and the feed valve 2 arranged on the grouting machine 1 also include: a turntable 4, which is arranged on the bottom port of the connecting valve 101, and a closing disk 402 is rotatably arranged on the turntable 4, which is used to block the connecting valve 101; a bearing plate 5, which is arranged on the turntable 4, and a connecting rod 504 is arranged on the bearing plate 5, one end of the connecting rod 504 is connected to the closing disk 402, a force block 501 is arranged on the outer wall of the bearing plate 5, and an insert block 201 is arranged on the feed valve 2, and the insert block 201 and the closing disk 402 are connected to the closing disk 402. The force block 501 is connected; when the connecting valve 101 is blocked, the feed valve 2 is linked to the force block 501 by the plug block 201 to rotate, and under the cooperation of the supporting plate 5 and the connecting rod 504, the closing plate 402 is rotated and closed to block the connecting valve 101. Specifically, the grouting machine 1 is also provided with a discharge valve, which is a prior art and is not described in detail. The grouting pump in the grouting machine 1 is used to perform synchronous grouting operation of the shield machine. When replacing the sealing gasket 3, in order to prevent the mortar in the connecting valve 101 from flowing out and flowing to the groove on the feed valve 2 where the sealing gasket 3 is placed when the feed valve 2 is disassembled. By setting a plugging device at the bottom open end of the connecting valve 101, the mortar is plugged when the feed valve 2 is disassembled. First, the bolts used for connecting the connecting valve 101 and the feed valve 2 are disassembled, and then the feed valve 2 is rotated so that the plug block 201 is linked to the force block 501 located in the connecting valve 101, and then the bearing plate 5 is rotated accordingly. During the movement of the bearing plate 5, the connecting rod 504 hinged at the bottom is synchronously linked to the closing plate 402 located on the rotating disk 4 to rotate. As the bearing plate 5 rotates, the closing plate 40 2 is gradually rotated to close. When closed, the three closing disks 402 are combined to form a disc shape. The diameter of the disc shape is larger than the diameter of the feed pipe of the connecting valve 101, which is convenient for blocking the pipe. When the connecting valve 101 pipe is closed, the staff can remove the feed valve 2. When removing it, the mortar in the connecting valve 101 is restricted by the closing disk 402, so that when the two valves are separated, the mortar is weakened or even prevented from flowing into the notch on the feed valve 2, which is convenient for the staff to replace the sealing gasket 3. When installing the connecting valve 101 and the feed valve 2, Fig. 22 For reference, the plug block 201 on the feed valve 2 is first symmetrical with the force block 501, and then the feed valve 2 is pressed down to make the plug block 201 engage with the force block 501. At this time, the feed valve 2 is fitted with the connecting valve 101, and then the feed valve 2 is rotated until the end of the stroke so that it is parallel to the pipe mouth of the connecting valve 101. During the rotation stroke of the feed valve 2, the feed valve 2 is linked to the force block 501 again through the plug block 201 to rotate the carrier plate 5. Similarly, with the reverse rotation of the carrier plate 5, the three closing plates 402 are gradually opened, as shown in FIG. Figure 7The state is shown, at this time, the feed valve 2 and the connecting valve 101 are connected by bolts through the flange thread, and the installation is completed. Further, the rotating disk 4 is provided with a placement groove 401, and the closing disk 402 is located in the placement groove 401, and the placement groove 401 makes each closing disk 402 respectively located in a space with an arc structure shape, so as to Fig.19 For reference, when the closing disk 402 is open, there is still a certain amount of space in the arc space, and the mortar will flow into this space when it flows. When the closing disk 402 is closed, each closing disk 402 will scrape the mortar in the arc space back from the opening on the turntable 4 into the pipe connected to the valve 101 while rotating.

[0044] In another embodiment provided by the present invention, a circular groove is provided on the connecting valve 101, the rotating disk 4 is located in the circular groove, and the diameter of the rotating disk 4 is smaller than the diameter of the circular groove, a closed space is formed between the outer wall of the rotating disk 4 and the inner wall of the circular groove, and the carrying disk 5 covers the rotating disk 4 and is located in the closed space. Figure 4 and Figure 5 For reference, the diameter of the turntable 4 is smaller than the diameter of the circular groove, which is used to facilitate the installation of the carrier plate 5 covering the turntable 4. Fig. 9 The state shown in FIG. 1 shows that the cover on the turntable 4 improves the sealing of the connection between the devices, and the carrier plate 5 is rotatably arranged at the center of the turntable 4 to Figure 8 refer to.

[0045] In another embodiment provided by the present invention, preferably, a guide groove 102 is provided on the connecting valve 101, and the force block 501 is located in the guide groove 102. When the feed valve 2 contacts the connecting valve 101, the plug block 201 is located in the guide groove 102 and is engaged with the force block 501. Furthermore, when the feed valve 2 is installed and disassembled, the plug block 201 is connected to the force block 501 in the guide groove 102. The plug block 201 is a concave structure, which is adapted to the convex structure of the force block 501, so as to facilitate the engagement of the plug block 201 with the force block 501.

[0046] In another embodiment provided by the present invention, a chuck 6 is further included, which is used to place the sealing gasket 3. The chuck 6 is plugged into the connecting valve 101, and the chuck 6 is located on the top of the carrier plate 5. A protrusion 602 is provided on the top of the carrier plate 5. An arc groove 601 is opened on the chuck 6, and a limit block 603 is slidably provided on the side of the chuck 6 away from the arc groove 601. The protrusion 602 is located in the arc groove 601. When the carrier plate 5 rotates, the protrusion 602 moves along the arc groove 601, and during this stroke, the protrusion 602 abuts against the limit block 603, so that the limit block 603 slides upward. Further, Figure 4For reference, at least three insertion holes are provided on the feed valve 2, the chuck 6 is inserted into the insertion holes and is located on the top of the carrier plate 5, and the sealing gasket 3 is located on the chuck 6. After the feed valve 2 is connected to the connecting valve 101, the sealing gasket 3 is clamped between the two. When the feed valve 2 rotates, the carrier plate 5 rotates synchronously during the synchronous rotation stroke, and the three protrusions 602 on the carrier plate 5 will rotate synchronously in the arc groove 601 in the chuck 6, so as to Fig.10 For reference, during the movement of the protrusion 602, it will abut against the limit block 603 slidably disposed on the chuck 6, so that the carrier plate 5 will lift the limit block 603 on the chuck 6 during the rotation process, as shown in FIG. Fig.11 As shown in the state, the limit block 603 is used to limit the center of the sealing gasket 3 that is already between the grooves of the connecting valve 101 and the sealing gasket 3, so that the limit block 603 abuts against the outer wall of the inner circle of the sealing gasket 3, thereby improving the stability of the sealing gasket 3 after installation.

[0047] In another embodiment provided by the present invention, a shelf groove 604 is provided on the chuck 6, a wedge block 605 is provided on the shelf groove 604, a convex seat 502 is provided on the carrier plate 5, a first elastic member 503 is provided on the convex seat 502, and the first elastic member 503 is located in the shelf groove 604. When the carrier plate 5 rotates, the first elastic member 503 moves along the shelf groove 604, and the first elastic member 503 abuts against the wedge block 605 during the stroke. Further, a slide groove 609 is provided on the chuck 6, the convex seat 502 is slidably provided in the slide groove 609, and the first elastic member 503 on the convex seat 502 extends into the shelf groove 604, so as to Fig.13 For reference, this state is that the closing disk 402 is about to close, that is, the state of blocking the connecting valve 101. This state is used to replace the sealing gasket 3. In some embodiments, when the feed valve 2 is disassembled and separated from the connecting valve 101, the sealing gasket 3 is just located in the notch of the disassembled feed valve 2. In other embodiments, the sealing gasket 3 is stuck in the notch of the feed valve 2 due to pressure, making it difficult to remove the sealing gasket 3 located in the lower end of the connecting valve 101. In this case, the sealing gasket 3 stuck in the notch of the connecting valve 101 is ejected by cooperating with the first elastic member 503 and the wedge block 605. Specifically, when the supporting disk 5 rotates to link the closing disk 402 to gradually close, as shown in FIG. Fig.13As shown in the state, the first elastic member 503 on the protrusion 502 will move in the shelf groove 604. During the movement, the first elastic member 503 will abut against the wedge block 605, and the first elastic member 503 will be deformed by the limit of the bevel of the wedge block 605. As the carrier plate 5 continues to rotate, the first elastic member 503 separates from the bevel of the wedge block 605. When separated, the first elastic member 503 is no longer limited and resets under elasticity, and the wedge block 605 is used to press the first elastic member 503 to the first elastic member 503. The deformation of the component 503 increases the elastic force of the first elastic component 503 when it is reset, and then the first elastic component 503 impacts one side of the sealing gasket 3 located on the top of the chuck 6 to push out the sealing gasket 3 stuck in the groove of the connecting valve 101. The elastic force of the first elastic component 503 is set according to the needs of the staff, and the sealing gasket 3 on one side pushed out by the first elastic component 503 is convenient for the staff to take out. At the same time, the protrusion 602 is separated from the limit block 603, and the limit block 603 is no longer affected and resets.

[0048] In another embodiment of the present invention, a reset groove 607 is provided on the wedge block 605, and a second elastic member 608 is provided on one side of the wedge block 605 located at the reset groove 607. Further, after the sealing gasket 3 is replaced between the connecting valve 101 and the feed valve 2, when the two are connected, Fig.13 For reference, the carrier plate 5 is rotated clockwise to reset. During this process, the first elastic member 503 is limited by the second elastic member 608 and plays a guiding role, so that the first elastic member 503 can easily enter the reset groove 607 when rotating. Fig.16 For reference.

[0049] In another embodiment provided by the present invention, a protrusion 606 is provided on the side of the wedge block 605 adjacent to the reset groove 607. When the first elastic member 503 abuts against the wedge block 605, the first elastic member 503 contacts the protrusion 606 during the stroke to limit the first elastic member 503 from entering the reset groove 607. Furthermore, the reset groove 607 is in an inclined state, and a protrusion 606 is provided on the side of the reset groove 607 adjacent to the wedge block 605. The protrusion 606 is used to prevent the first elastic member 503 from entering the reset groove 607 when the first elastic member 503 abuts against the inclined surface of the wedge block 605. The protrusion 606 can be used to prevent the first elastic member 503 from entering the reset groove 607 through the provision of the protrusion 606. The protruding height of the protrusion 606 can also be determined by those skilled in the art through logical analysis and reasoning or limited experiments.

[0050] In another embodiment provided by the present invention, at least three discharge grooves 403 are opened in the placement groove 401, and the three discharge grooves 403 are respectively located in three arc-shaped spaces on the turntable 4. The discharge grooves 403 are used to cause the mortar in the arc-shaped spaces to flow from the discharge grooves 403 to the pipe of the connecting valve 101 when the closing disc 402 rotates to scrape the mortar, so as to facilitate the scraping of the mortar in the placement groove 401. It should be noted that the pipe connected to the connecting valve 101 is provided with a filter screen on one end of the concrete pool, which is a prior art. The filter screen is used to perform the first step of filtering the mortar flowing into the connecting valve 101 to process the larger sand and gravel in the concrete.

[0051] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A synchronous grouting pump suction device for a shield machine, comprising a grouting machine (1) and a connecting valve (101) and a feed valve (2) arranged on the grouting machine (1), characterized in that: Also includes: A rotating disk (4) is arranged on the bottom port of the connecting valve (101), and a closing disk (402) is rotatably arranged on the rotating disk (4) for closing the connecting valve (101); A carrier plate (5) is arranged on the rotating plate (4); a connecting rod (504) is arranged on the carrier plate (5); one end of the connecting rod (504) is connected to the closing plate (402); a force block (501) is arranged on the outer wall of the carrier plate (5); an insert block (201) is arranged on the feed valve (2); the insert block (201) is connected to the force block (501); When the connecting valve (101) is blocked, the feed valve (2) is linked to the force bearing block (501) to rotate via the insert block (201), and under the cooperation of the supporting plate (5) and the connecting rod (504), the closing plate (402) is rotated and closed to block the connecting valve (101); A chuck (6) for placing a sealing gasket (3), the chuck (6) being inserted into the connecting valve (101), and the chuck (6) being located on the top of the supporting plate (5), the top of the supporting plate (5) being provided with a convex block (602), the chuck (6) being provided with an arc-shaped groove (601), and a limiting block (603) being slidably provided on a side of the chuck (6) away from the arc-shaped groove (601), the convex block (602) being located in the arc-shaped groove (601), the chuck (6) being provided with a resting groove (604), the resting groove (604) being provided with a wedge block (605), the supporting plate (5) being provided with a convex seat (502), the convex seat (502) being provided with a first elastic member (503), the first elastic member (503) being located in the resting groove (604).

2. The shield machine synchronous grouting pump suction device according to claim 1 is characterized in that: A circular groove is provided on the connecting valve (101), the rotating disk (4) is located in the circular groove, and the diameter of the rotating disk (4) is smaller than the diameter of the circular groove.

3. The shield machine synchronous grouting pump suction device according to claim 2 is characterized in that: A closed space is formed between the outer wall of the turntable (4) and the inner wall of the circular groove, and the supporting plate (5) covers the turntable (4) and is located in the closed space.

4. The shield machine synchronous grouting pump suction device according to claim 1, characterized in that: The connecting valve (101) is provided with a guide groove (102), and the force-bearing block (501) is located in the guide groove (102). When the feed valve (2) is in contact with the connecting valve (101), the insert block (201) is located in the guide groove (102) and is engaged with the force-bearing block (501).

5. The shield machine synchronous grouting pump suction device according to claim 1, characterized in that: When the carrying plate (5) rotates, the protrusion (602) moves along the arc-shaped groove (601), and during this stroke, the protrusion (602) abuts against the limit block (603), so that the limit block (603) slides upward.

6. The shield machine synchronous grouting pump suction device according to claim 1, characterized in that: When the carrying plate (5) rotates, the first elastic member (503) moves along the shelf groove (604), and during this stroke, the first elastic member (503) abuts against the wedge block (605).

7. The shield machine synchronous grouting pump suction device according to claim 1, characterized in that: The wedge-shaped block (605) is provided with a reset groove (607), and the wedge-shaped block (605) is provided with a second elastic member (608) on one side of the reset groove (607).

8. The shield machine synchronous grouting pump suction device according to claim 7, characterized in that: A protrusion (606) is provided on one side of the wedge block (605) adjacent to the reset groove (607). When the first elastic member (503) abuts against the wedge block (605), the first elastic member (503) contacts the protrusion (606) during the stroke, so as to limit the first elastic member (503) from entering the reset groove (607).

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