Subway shield segment mold and method thereof

Abstract

The invention belongs to the technical field of shield segment molds, particularly relates to a subway shield segment mold and a method thereof, and provides the following scheme aiming at the problems that when an existing shield segment mold is used, automatic demolding is inconvenient, a worker needs to hold a suction cup to take out a shield segment from the mold, the labor intensity is high, and the working efficiency is low. The device comprises a bottom plate, four foot pads are arranged at the bottom of the bottom plate, and two vertical plates are fixedly mounted at the top of the bottom plate and used for supporting a mold; and the mold mechanism is installed on the tops of the two vertical plates and used for storing and machining the shield segments, and the mold mechanism comprises an arc-shaped shell cover. The shield segment is sucked through electric control negative pressure, meanwhile, air is blown into the mold shell, the shield segment is pushed and extruded, demolding of the shield segment is facilitated, after demolding is completed, automatic reset can be achieved, the mold shell is blocked, and next-time machining is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of shield segment moulds, and in particular to a subway shield segment mould and a method thereof. Background Art

[0002] With the continuous development of urban rail, the continuous research and development of shield tunneling machine manufacturing and construction technology, the requirements for "shield segment molds" (referred to as segment molds) have become more and more advanced. Among them, the concrete segments produced by them have also become one of the important key technologies related to the quality of the entire tunnel project in shield construction. When the shield segment mold is being cast, the cover plate needs to be opened and closed continuously. The existing closing method generally fixes the cover plate by manually twisting the bolts to make it convenient and stable for subsequent casting. At this time, due to manual twisting, it may cost a lot of manpower and material resources, increase costs and affect work efficiency, so targeted improvement design is needed.

[0003] Publication (Announcement) No.: CN216658361 U discloses a high-precision subway shield segment mold, including a bottom plate, a fixed template is fixedly installed on the top of the bottom plate, and the fixed template is plugged with a side template, a fixed block is fixedly installed on the top surface of the bottom plate, and a connecting rod is hinged in the fixed block, a mold cover is fixedly installed on the end of the connecting rod away from the fixed block, a plug hole is opened on the surface of the connecting rod, and a plug rod is inserted in the plug hole, a pull plate is fixedly installed on the end of the plug rod away from the connecting rod, and a spring is sleeved on the surface of the pull plate, and the two ends of the spring are respectively welded to the inner wall of the fixed block and the surface of the plug rod. The device is provided with a plug hole and a plug rod, and the pull plate is pulled, and then the mold cover is rotated to complete the closing work of the cover, and then the pull plate is released to reset the plug rod, so that the connecting rod is fixed, which is convenient for the staff to perform the pouring process and increase the work efficiency of the staff.

[0004] The existing shield segment mold is not convenient for automatic demoulding when in use, and workers need to hold a suction cup to take the shield segment out of the mold, which is labor-intensive and has low work efficiency. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the existing shield segment mold, which is inconvenient to automatically demould when used, requires workers to hold a suction cup to take the shield segment out of the mold, has high labor intensity and low work efficiency, and proposes a subway shield segment mold and method.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A subway shield segment mold, comprising:

[0008] A bottom plate, wherein four foot pads are arranged at the bottom of the bottom plate, and two vertical plates are fixedly installed on the top of the bottom plate for supporting the mold;

[0009] A mold mechanism is installed on the top of the two vertical plates and is used for shield segment storage and processing. The mold mechanism includes an arc-shaped shell cover, which is fixedly installed on the two vertical plates. A mold shell is fixedly installed on the top of the arc-shaped shell cover. The mold shell is used to store the steel cage and pour concrete.

[0010] A sealing mechanism, mounted on the top of the base plate, cooperates with the mold mechanism;

[0011] A rotating mechanism, mounted on the top of the base plate;

[0012] The negative pressure suction mechanism is connected to the rotating mechanism and is used to suck and demould the shield segments.

[0013] Preferably, the mold shell is an arc-shaped structure, two support plates are welded at both ends of the mold shell, synchronous motors are installed on the outer sides of the four support plates, arc-shaped cover plates are provided at both ends of the mold shell, the two arc-shaped cover plates are matched with the mold shell, support shafts are fixedly installed at both ends of the two arc-shaped cover plates, through holes are opened on the four support plates, the support shafts are rotatably connected to the through holes, and the output shaft of the synchronous motor is fixedly installed with the support shaft.

[0014] Preferably, blocking plates are fixedly installed at both ends of the mold shell, and rubber pads are arranged on the tops of the two blocking plates, and the two rubber pads are in contact with the outer sides of the two arc-shaped cover plates; after the two arc-shaped cover plates are flipped open, they are blocked by the two blocking plates and the two rubber pads.

[0015] Preferably, the sealing mechanism includes two sealing blocks, two air holes are provided on the mold shell, the two sealing blocks cooperate with the two air holes, the bottoms of the two sealing blocks are fixedly installed with limiting plates, the two limiting plates are in contact with the bottom of the mold shell, the bottoms of the two limiting plates are fixedly installed with round rods, the bottom ends of the two round rods are installed with the same support plate, the bottom of the support plate is installed with two elastic reset units, the arc-shaped shell cover is provided with two circular holes, and the two round rods are sealingly and slidably connected to the inner walls of the two circular holes.

[0016] Preferably, the two elastic reset units include two fixed rods, both of which are fixedly installed on the top of the base plate, both of which are provided with rectangular grooves on the tops, both of which are slidably installed with rectangular rods, and both of which are fixedly installed with the top ends of the rectangular rods and the bottom of the support plate, and a reset spring is fixedly installed between the rectangular rod and the rectangular groove; the sealing block is reset to block the air vent through the elastic force of the reset spring.

[0017] Preferably, the rotating mechanism includes a rotating column, a rotating shaft is fixedly installed on the bottom end of the rotating column, a circular groove is opened on the top of the bottom plate, the rotating shaft and the circular groove are rotatably installed through bearings, a four-sided groove is opened on the top of the rotating column, a four-sided rod is slidably installed in the four-sided groove, a mounting plate is fixedly installed on the top of the four-sided rod, and the negative pressure suction mechanism is arranged on the mounting plate.

[0018] Preferably, a hydraulic cylinder is installed between the bottom of the four-sided rod and the four-sided groove, the side wall of the four-sided groove is provided with a strip hole, and a pressure rod is fixedly installed on the outer side of the four-sided rod, the pressure rod cooperates with the strip hole, and the pressure rod is used to compress the support plate, and a servo motor is fixedly installed on the top of the bottom plate, and a driving gear is fixedly installed on the output shaft of the servo motor, and a driven gear is provided on the outer side of the rotating column, and the driving gear is meshed with the driven gear; the servo motor drives the rotating column to rotate through the driving gear and the driven gear, and the rotating column drives the mounting plate to rotate 180 degrees through the four-sided rod, and the mounting plate drives the arc-shaped negative pressure box to rotate 180 degrees, so that the arc-shaped negative pressure box leaves the mold shell, which is convenient for pouring concrete.

[0019] Preferably, the negative pressure suction mechanism includes an arc-shaped negative pressure box, two electric push rods are fixedly installed on the outside of the arc-shaped negative pressure box, and the two electric push rods are fixedly installed on the mounting plate. A plurality of negative pressure ports are arranged on the inner side of the arc-shaped negative pressure box, and a negative pressure suction pipe is connected to the outside of the arc-shaped negative pressure box, and a negative pressure pump is connected to the negative pressure suction pipe, and the outlet of the negative pressure pump is connected to an air outlet pipe, and the air outlet pipe is connected to the arc-shaped shell cover, and a movable hole is provided on the mounting plate, and the negative pressure suction pipe is movably connected to the movable hole; when the negative pressure pump works, the arc-shaped negative pressure box is evacuated through the negative pressure suction pipe, so that negative pressure is generated inside the arc-shaped negative pressure box, and the shield segments are sucked tightly through the plurality of negative pressure ports, and at the same time, the air outlet of the negative pressure pump blows air to the air outlet pipe, and the gas enters the mold shell through the arc-shaped shell cover and the air vents to push the shield segments.

[0020] The present invention also proposes a method for using a subway shield segment mold, comprising the following steps:

[0021] S1: Turn on the power supply and PLC controller to control the electrical appliances. The prior art will not be described in detail here. Four synchronous motors are used to drive the two arc-shaped cover plates to flip open. The servo motor drives the rotating column to rotate through the driving gear and the driven gear. The rotating column drives the mounting plate to rotate 180 degrees through the four-side rods. The mounting plate drives the arc-shaped negative pressure box to rotate 180 degrees, so that the arc-shaped negative pressure box leaves the mold shell.

[0022] S2: Place the steel cage in the mold shell, then pour the concrete, and then smooth the concrete along the arc structure of the mold shell;

[0023] S3: Reverse control of the four synchronous motors to avoid the two arc-shaped cover plates, and demoulding is performed after the concrete solidifies;

[0024] S4: When demolding, first open the two arc-shaped cover plates, then control the arc-shaped negative pressure box to rotate above the mold shell through the rotating mechanism, and the two electric push rods push the arc-shaped negative pressure box to move horizontally and be located directly above the mold shell;

[0025] S5: The hydraulic cylinder drives the four-side rods to move downward, the four-side rods drive the mounting plate to move downward, the mounting plate drives the arc-shaped negative pressure box to move downward and contact the outer side of the shield segment, and at the same time, the four-side rods drive the pressure rods to move downward, the pressure rods exert a downward pressure on the support plate, the support plate drives the two round rods to move downward, the two round rods drive the two sealing blocks to leave the two vents, so that the interior of the mold shell is connected with the interior of the arc-shaped shell cover;

[0026] S6: The negative pressure pump works, and the arc-shaped negative pressure box is evacuated through the negative pressure suction tube, so that negative pressure is generated inside the arc-shaped negative pressure box, and the shield pipe segment is sucked tightly through multiple negative pressure ports. At the same time, the air outlet of the negative pressure pump blows air to the air outlet pipe, and the gas enters the mold shell through the arc-shaped shell cover and the air vents, pushing the shield pipe segment to facilitate the demolding of the shield pipe segment. Then, the hydraulic cylinder is controlled to push the four-side rod to move upward, and the pressure rod leaves the support plate. The elastic force of the reset spring resets the sealing block to block the air vents, and the arc-shaped negative pressure box is controlled to rotate 180 degrees again, and the shield pipe segment is rotated to the other side of the mold shell, and then it can be removed and the processing can be continued.

[0027] In the present invention, the subway shield segment mold and method thereof have the following beneficial effects:

[0028] When demoulding in this solution, the two arc-shaped cover plates are opened, and then the arc-shaped negative pressure box is controlled to rotate above the mold shell through the rotating mechanism. The two electric push rods are set to push the arc-shaped negative pressure box to move horizontally, and are located just above the mold shell. The angle of the arc-shaped negative pressure box can be adjusted;

[0029] In this scheme, the hydraulic cylinder drives the four-side rod to move downward, the four-side rod drives the mounting plate to move downward, the mounting plate drives the arc-shaped negative pressure box to move downward and contact the outer side of the shield segment, and at the same time, the four-side rod drives the pressure rod to move downward, the pressure rod forms a downward pressure on the support plate, the support plate drives the two round rods to move downward, the two round rods drive the two sealing blocks to leave the two air holes, so that the interior of the mold shell is connected with the interior of the arc-shaped shell cover;

[0030] The negative pressure pump of this scheme works, and the arc-shaped negative pressure box is evacuated through the negative pressure suction pipe, so that negative pressure is generated inside the arc-shaped negative pressure box, and the shield pipe segment is sucked tightly through multiple negative pressure ports. At the same time, the air outlet of the negative pressure pump blows air to the air outlet pipe, and the gas enters the mold shell through the arc-shaped shell cover and the air vents, pushing the shield pipe segment, making it convenient to demould the shield pipe segment, and controlling the hydraulic cylinder to push the four-side rod to move upward, and the pressure rod leaves the support plate. Through the elastic force of the reset spring, the sealing block is reset to block the air vents;

[0031] The present invention electrically controls negative pressure to attract shield segments and blows air into a mold shell to push the shield segments, thereby facilitating demoulding of the shield segments. After demoulding is completed, the mold shell can be automatically reset to block the mold shell, thereby facilitating the next processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic structural diagram of a subway shield segment mold proposed by the present invention;

[0033] Figure 2 The present invention proposes Figure 1 A rear view structural diagram of ;

[0034] Figure 3 This is a schematic diagram of the structure of a subway shield segment mold proposed by the present invention from a bottom view;

[0035] Figure 4 The present invention proposes Figure 3 Schematic diagram of the structure of the disassembled bottom plate;

[0036] Figure 5 This is a schematic diagram of the structure of the arc-shaped shell cover, mold shell, two arc-shaped cover plates and related parts proposed by the present invention;

[0037] Figure 6 A schematic diagram of the structure of the mold shell and its related parts proposed by the present invention;

[0038] Figure 7 A schematic diagram of the structure of two arc-shaped cover plates proposed by the present invention;

[0039] Figure 8 A schematic diagram of the structure of the sealing mechanism and its related parts proposed by the present invention;

[0040] Fig. 9 This is a schematic diagram of the three-dimensional structure of the fixing plate, the return spring, and the rectangular rod proposed in the present invention;

[0041] Fig.10 This is a schematic diagram of the structure of the negative pressure suction mechanism and its related parts proposed by the present invention;

[0042] Fig.11 The present invention proposes Fig.10Schematic diagram of the structure viewed from above;

[0043] Fig.12 It is a structural schematic diagram of the rotating mechanism and its related parts proposed by the present invention;

[0044] Fig.13 This is a schematic diagram of the structure of the rotating column, hydraulic cylinder, four-side rods, mounting plate and related parts proposed by the present invention;

[0045] Fig.14 This is a schematic diagram of the three-dimensional structure of the arc-shaped shell cover proposed by the present invention;

[0046] Fig.15 The present invention proposes Fig.14 Schematic diagram of the structure viewed from above.

[0047] In the figure: 1, bottom plate; 11, foot pad; 12, vertical plate; 13, circular groove; 2, mold mechanism; 21, arc shell cover; 211, circular hole; 22, mold shell; 23, arc cover plate; 231, support shaft; 24, blocking plate; 241, rubber pad; 25, support sheet; 251, through hole; 26, synchronous motor; 27, air vent; 3, sealing mechanism; 31, fixing rod; 32, rectangular rod; 33, support plate; 34, round rod; 35, limiter; 36, sealing block; 37, rectangular slot; 38, reset spring; 4, negative pressure suction mechanism; 41, arc-shaped negative pressure box; 42, negative pressure port; 43, negative pressure straw; 44, negative pressure pump; 45, air outlet pipe; 46, electric push rod; 47, telescopic rod; 5, rotating mechanism; 51, rotating column; 52, rotating shaft; 53, strip hole; 54, pressure rod; 55, servo motor; 56, driving gear; 57, driven gear; 58, four-sided rod; 59, mounting plate; 591, movable hole; 510, hydraulic cylinder; 511, four-sided slot. DETAILED DESCRIPTION

[0048] The technical solution of this embodiment will be clearly and completely described below in conjunction with the drawings in this embodiment. Obviously, the described embodiment is only a part of this embodiment, rather than all of the embodiments.

[0049] Embodiment 1

[0050] Reference Figure 1-Figure 15 , a subway shield segment mold, comprising:

[0051] A bottom plate 1, with four foot pads 11 arranged at the bottom of the bottom plate 1, and two vertical plates 12 fixedly installed on the top of the bottom plate 1 for supporting the mold;

[0052] The mold mechanism 2 is installed on the top of the two vertical plates 12 and is used for shield segment storage and processing. The mold mechanism 2 includes an arc-shaped shell cover 21, which is fixedly installed on the two vertical plates 12. A mold shell 22 is fixedly installed on the top of the arc-shaped shell cover 21. The mold shell 22 is used to store the steel cage and pour concrete.

[0053] The sealing mechanism 3 is installed on the top of the bottom plate 1 and cooperates with the mold mechanism 2;

[0054] A rotating mechanism 5 is mounted on the top of the base plate 1;

[0055] The negative pressure suction mechanism 4 is connected to the rotating mechanism 5 and is used to suck and demould the shield segments.

[0056] Reference Figure 5 , Figure 7 In this embodiment, the mold shell 22 is an arc-shaped structure, and two support plates 25 are welded at both ends of the mold shell 22. A synchronous motor 26 is installed on the outer side of the four support plates 25. Arc-shaped cover plates 23 are provided at both ends of the mold shell 22. The two arc-shaped cover plates 23 are matched with the mold shell 22. Support shafts 231 are fixedly installed at both ends of the two arc-shaped cover plates 23. Through holes 251 are opened on the four support plates 25. The support shafts 231 are rotatably connected to the through holes 251, and the output shaft of the synchronous motor 26 is fixedly installed with the support shaft 231.

[0057] Reference Figure 6 In this embodiment, blocking plates 24 are fixedly installed at both ends of the mold shell 22, and rubber pads 241 are provided on the tops of the two blocking plates 24. The two rubber pads 241 are in conflict with the outer sides of the two arc-shaped cover plates 23; after the two arc-shaped cover plates 23 are flipped open, they are blocked by the two blocking plates 24 and the two rubber pads 241.

[0058] Reference Figure 8 , Fig.14 , Fig.15 In this embodiment, the sealing mechanism 3 includes two sealing blocks 36, two air holes 27 are provided on the mold shell 22, the two sealing blocks 36 cooperate with the two air holes 27, the bottoms of the two sealing blocks 36 are fixedly installed with limiting plates 35, the two limiting plates 35 are in contact with the bottom of the mold shell 22, the bottoms of the two limiting plates 35 are fixedly installed with round rods 34, the bottom ends of the two round rods 34 are installed with the same support plate 33, the bottom of the support plate 33 is installed with two elastic reset units, the arc-shaped shell cover 21 is provided with two round holes 211, and the two round rods 34 are sealingly and slidably connected with the inner walls of the two round holes 211.

[0059] Reference Fig. 9In this embodiment, the two elastic reset units include two fixed rods 31, and the two fixed rods 31 are fixedly installed on the top of the bottom plate 1. A rectangular groove 37 is opened on the top of the two fixed rods 31, and a rectangular rod 32 is slidably installed in the two rectangular grooves 37. The top ends of the two rectangular rods 32 are fixedly installed on the bottom of the support plate 33, and a reset spring 38 is fixedly installed between the rectangular rod 32 and the rectangular groove 37; through the elastic force of the reset spring 38, the sealing block 36 is reset to block the air vent 27.

[0060] Reference Fig.12 In this embodiment, the rotating mechanism 5 includes a rotating column 51, a rotating shaft 52 is fixedly installed at the bottom end of the rotating column 51, a circular groove 13 is opened at the top of the bottom plate 1, the rotating shaft 52 and the circular groove 13 are rotatably installed through bearings, a four-sided groove 511 is opened at the top of the rotating column 51, a four-sided rod 58 is slidably installed in the four-sided groove 511, a mounting plate 59 is fixedly installed on the top of the four-sided rod 58, and the negative pressure suction mechanism 4 is arranged on the mounting plate 59.

[0061] Reference Fig.13 In this embodiment, a hydraulic cylinder 510 is installed between the bottom of the four-side rod 58 and the four-side groove 511, and a strip hole 53 is opened on the side wall of the four-side groove 511. A pressure rod 54 is fixedly installed on the outer side of the four-side rod 58, and the pressure rod 54 cooperates with the strip hole 53. The pressure rod 54 is used to compress the support plate 33. A servo motor 55 is fixedly installed on the top of the bottom plate 1. A driving gear 56 is fixedly installed on the output shaft of the servo motor 55. A driven gear 57 is sleeved on the outer side of the rotating column 51, and the driving gear 56 is meshed with the driven gear 57; the servo motor 55 drives the rotating column 51 to rotate through the driving gear 56 and the driven gear 57, and the rotating column 51 drives the mounting plate 59 to rotate 180 degrees through the four-side rod 58, and the mounting plate 59 drives the arc negative pressure box 41 to rotate 180 degrees, so that the arc negative pressure box 41 leaves the mold shell 22, which is convenient for pouring concrete.

[0062] Reference Fig.10 , Fig.11In this embodiment, the negative pressure suction mechanism 4 includes an arc-shaped negative pressure box 41, two electric push rods 46 are fixedly installed on the outer side of the arc-shaped negative pressure box 41, and the two electric push rods 46 are fixedly installed on the mounting plate 59. A plurality of negative pressure ports 42 are arranged on the inner side of the arc-shaped negative pressure box 41, and a negative pressure suction pipe 43 is connected to the outer side of the arc-shaped negative pressure box 41, and a negative pressure pump 44 is connected to the negative pressure suction pipe 43. The outlet of the negative pressure pump 44 is connected to an air outlet pipe 45, and the air outlet pipe 45 is connected to the arc-shaped shell cover 21. The mounting plate 59 is provided with an active hole 591, and the negative pressure suction pipe 43 is movably connected to the active hole 591; when the negative pressure pump 44 works, the arc-shaped negative pressure box 41 is evacuated through the negative pressure suction pipe 43, so that negative pressure is generated inside the arc-shaped negative pressure box 41, and the shield segments are sucked tightly through multiple negative pressure ports 42. At the same time, the air outlet of the negative pressure pump 44 blows air to the air outlet pipe 45, and the gas enters the mold shell 22 through the arc-shaped shell cover 21 and the air vent 27 to push the shield segments.

[0063] The present invention also proposes a method for using a subway shield segment mold, comprising the following steps:

[0064] S1: Turn on the power supply and PLC controller to control the electrical appliances. The prior art will not be described in detail here. The two arc-shaped cover plates 23 are turned over and opened by four synchronous motors 26. The servo motor 55 drives the rotating column 51 to rotate through the driving gear 56 and the driven gear 57. The rotating column 51 drives the mounting plate 59 to rotate 180 degrees through the four-side rod 58. The mounting plate 59 drives the arc-shaped negative pressure box 41 to rotate 180 degrees, so that the arc-shaped negative pressure box 41 leaves the mold shell 22.

[0065] S2: placing the steel cage in the mold shell 22, then pouring concrete, and then smoothing the concrete along the arc structure of the mold shell 22;

[0066] S3: Reverse control of the four synchronous motors 26 to prevent the two arc-shaped cover plates 23 from being demoulded after the concrete solidifies;

[0067] S4: When demoulding, first open the two arc-shaped cover plates 23, then control the arc-shaped negative pressure box 41 to rotate 180 degrees through the rotating mechanism 5 to be located above the mold shell 22, and the two electric push rods 46 are arranged to push the arc-shaped negative pressure box 41 to move horizontally and be located directly above the mold shell 22;

[0068] S5: The hydraulic cylinder 510 drives the four-side rod 58 to move downward, the four-side rod 58 drives the mounting plate 59 to move downward, the mounting plate 59 drives the arc-shaped negative pressure box 41 to move downward and contact the outer side of the shield segment, and at the same time, the four-side rod 58 drives the pressure rod 54 to move downward, the pressure rod 54 forms a downward pressure on the support plate 33, the support plate 33 drives the two round rods 34 to move downward, the two round rods 34 drive the two sealing blocks 36 to leave the two vent holes 27, so that the interior of the mold shell 22 is connected with the interior of the arc-shaped shell cover 21;

[0069] S6: The negative pressure pump 44 works, and the arc-shaped negative pressure box 41 is evacuated through the negative pressure suction pipe 43, so that negative pressure is generated inside the arc-shaped negative pressure box 41, and the shield pipe segment is sucked tightly through multiple negative pressure ports 42. At the same time, the air outlet of the negative pressure pump 44 blows air to the air outlet pipe 45, and the gas enters the mold shell 22 through the arc-shaped shell cover 21 and the air vent 27, pushing the shield pipe segment to facilitate the demolding of the shield pipe segment. Then, the hydraulic cylinder 510 is controlled to push the four-side rod 58 to move upward, and the pressure rod 54 leaves the support plate 33. Through the elastic force of the reset spring 38, the sealing block 36 is reset to block the air vent 27, and the arc-shaped negative pressure box 41 is controlled to rotate 180 degrees again, and the shield pipe segment is rotated to the other side of the mold shell 22, and then it can be removed and the processing can be continued.

[0070] Embodiment 2

[0071] The rest of the embodiment 2 is the same as the embodiment 1, except that a telescopic rod 47 is fixedly installed on the outside of the arc-shaped negative pressure box 41, and the telescopic rod 47 is installed on the mounting plate 59. The telescopic rod 47 ensures the stable horizontal movement of the arc-shaped negative pressure box 41. This application includes all the structural shapes, sizes and materials of the embodiment 1, and they can be selected and adjusted to meet the specific usage conditions. The accompanying drawings are all schematic structural diagrams, and the specific actual sizes can be appropriately adjusted.

[0072] The above description is only a preferred specific implementation manner of this embodiment, but the protection scope of this embodiment is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of this embodiment within the technical scope disclosed in this embodiment, and they should be covered by the protection scope of this embodiment.

Claims

1. A subway shield segment mold, characterized in that: include: A base plate (1), wherein four foot pads (11) are arranged at the bottom of the base plate (1), and two vertical plates (12) are fixedly installed on the top of the base plate (1) for supporting the mold; A mold mechanism (2) is installed on the top of the two vertical plates (12) and is used for storing and processing shield segments. The mold mechanism (2) comprises an arc-shaped shell cover (21). The arc-shaped shell cover (21) is fixedly installed on the two vertical plates (12). A mold shell (22) is fixedly installed on the top of the arc-shaped shell cover (21). The mold shell (22) is used for storing a steel cage and pouring concrete. A sealing mechanism (3) is mounted on the top of the bottom plate (1) and cooperates with the mold mechanism (2); A rotating mechanism (5) is mounted on the top of the base plate (1); The negative pressure suction mechanism (4) is connected to the rotating mechanism (5) and is used to suck and demould the shield segment.

2. A subway shield segment mold according to claim 1, characterized in that: The mold shell (22) is an arc-shaped structure. Two support plates (25) are welded at both ends of the mold shell (22). A synchronous motor (26) is installed on the outer sides of the four support plates (25). Arc-shaped cover plates (23) are provided at both ends of the mold shell (22). The two arc-shaped cover plates (23) are matched with the mold shell (22). Support shafts (231) are fixedly installed at both ends of the two arc-shaped cover plates (23). Through holes (251) are opened on the four support plates (25). The support shafts (231) are rotatably connected to the through holes (251). The output shaft of the synchronous motor (26) is fixedly installed with the support shaft (231).

3. A subway shield segment mold according to claim 2, characterized in that: Blocking plates (24) are fixedly mounted at both ends of the mold shell (22), and rubber pads (241) are arranged on the tops of the two blocking plates (24), and the two rubber pads (241) are in contact with the outer sides of the two arc-shaped cover plates (23).

4. A subway shield segment mold according to claim 1, characterized in that: The sealing mechanism (3) comprises two sealing blocks (36), and two air holes (27) are provided on the mold shell (22). The two sealing blocks (36) cooperate with the two air holes (27).

5. A subway shield segment mold according to claim 4, characterized in that: The bottoms of the two sealing blocks (36) are fixedly mounted with limit plates (35), the two limit plates (35) are in contact with the bottom of the mold shell (22), the bottoms of the two limit plates (35) are fixedly mounted with round rods (34), the bottom ends of the two round rods (34) are mounted with the same support plate (33), the bottom of the support plate (33) is mounted with two elastic reset units, the arc-shaped shell cover (21) is provided with two round holes (211), and the two round rods (34) are sealingly and slidably connected with the inner walls of the two round holes (211).

6. The subway shield segment mold according to claim 1, characterized in that: The two elastic reset units include two fixed rods (31), the two fixed rods (31) are fixedly mounted on the top of the bottom plate (1), the tops of the two fixed rods (31) are provided with rectangular grooves (37), rectangular rods (32) are slidably mounted in the two rectangular grooves (37), the tops of the two rectangular rods (32) are fixedly mounted on the bottom of the support plate (33), and a reset spring (38) is fixedly mounted between the rectangular rods (32) and the rectangular grooves (37).

7. The subway shield segment mold according to claim 1, characterized in that: The rotating mechanism (5) comprises a rotating column (51), a rotating shaft (52) is fixedly mounted at the bottom end of the rotating column (51), a circular groove (13) is provided at the top of the bottom plate (1), the rotating shaft (52) and the circular groove (13) are rotatably mounted via bearings, a four-sided groove (511) is provided at the top of the rotating column (51), a four-sided rod (58) is slidably mounted in the four-sided groove (511), a mounting plate (59) is fixedly mounted at the top of the four-sided rod (58), and the negative pressure suction mechanism (4) is arranged on the mounting plate (59).

8. A subway shield segment mold according to claim 7, characterized in that: A hydraulic cylinder (510) is installed between the bottom of the four-side rod (58) and the four-side groove (511), and a strip hole (53) is opened on the side wall of the four-side groove (511). A pressure rod (54) is fixedly installed on the outer side of the four-side rod (58), and the pressure rod (54) cooperates with the strip hole (53). The pressure rod (54) is used to compress the support plate (33). A servo motor (55) is fixedly installed on the top of the bottom plate (1), and a driving gear (56) is fixedly installed on the output shaft of the servo motor (55). A driven gear (57) is sleeved on the outer side of the rotating column (51), and the driving gear (56) is meshed with the driven gear (57).

9. The subway shield segment mold according to claim 1, characterized in that: The negative pressure suction mechanism (4) comprises an arc-shaped negative pressure box (41), two electric push rods (46) are fixedly installed on the outer side of the arc-shaped negative pressure box (41), and the two electric push rods (46) are fixedly installed on the mounting plate (59). A plurality of negative pressure ports (42) are arranged on the inner side of the arc-shaped negative pressure box (41). The outer side of the arc-shaped negative pressure box (41) is connected with a negative pressure suction pipe (43), and the negative pressure suction pipe (43) is connected with a negative pressure pump (44). The outlet of the negative pressure pump (44) is connected with an air outlet pipe (45), and the air outlet pipe (45) is connected with the arc-shaped shell cover (21). A movable hole (591) is opened on the mounting plate (59), and the negative pressure suction pipe (43) is movably connected with the movable hole (591).

10. A method for using a subway shield segment mold, wherein the subway shield segment mold is a subway shield segment mold according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Turn on the power supply and the PLC controller, and drive the two arc-shaped cover plates (23) to flip open through the four synchronous motors (26), and the servo motor (55) drives the rotating column (51) to rotate through the driving gear (56) and the driven gear (57), and the rotating column (51) drives the mounting plate (59) to rotate 180 degrees through the four-side rods (58), and the mounting plate (59) drives the arc-shaped negative pressure box (41) to rotate 180 degrees, so that the arc-shaped negative pressure box (41) leaves the mold shell (22); S2: placing the steel cage in the mold shell (22), then pouring concrete, and then smoothing the concrete along the arc structure of the mold shell (22); S3: Reversely control the four synchronous motors (26) so that the two arc-shaped cover plates (23) are prevented from being demoulded after the concrete solidifies; S4: When demoulding, first open the two arc-shaped cover plates (23), then control the arc-shaped negative pressure box (41) to rotate 180 degrees through the rotating mechanism (5) to be located above the mold shell (22), and the two electric push rods (46) are arranged to push the arc-shaped negative pressure box (41) to move horizontally and be located directly above the mold shell (22); S5: The hydraulic cylinder (510) drives the four-side rod (58) to move downward, the four-side rod (58) drives the mounting plate (59) to move downward, the mounting plate (59) drives the arc-shaped negative pressure box (41) to move downward and contact the outer side of the shield segment, and at the same time, the four-side rod (58) drives the pressure rod (54) to move downward, the pressure rod (54) forms a downward pressure on the support plate (33), the support plate (33) drives the two round rods (34) to move downward, the two round rods (34) drive the two sealing blocks (36) to leave the two air holes (27), so that the interior of the mold shell (22) is connected with the interior of the arc-shaped shell cover (21); S6: The negative pressure pump (44) works, and the arc-shaped negative pressure box (41) is evacuated through the negative pressure suction pipe (43), so that negative pressure is generated inside the arc-shaped negative pressure box (41), and the shield pipe segment is sucked tightly through multiple negative pressure ports (42). At the same time, the air outlet of the negative pressure pump (44) blows air to the air outlet pipe (45), and the gas enters the mold shell (22) through the arc-shaped shell cover (21) and the air vent (27), pushing the shield pipe segment to facilitate demoulding of the shield pipe segment. Then, the hydraulic cylinder (510) is controlled to push the four-side rod (58) to move upward, and the pressure rod (54) leaves the support plate (33). Through the elastic force of the reset spring (38), the sealing block (36) is reset to block the air vent (27), and the arc-shaped negative pressure box (41) is controlled to rotate 180 degrees again, and the shield pipe segment is rotated to the other side of the mold shell (22), and then removed, and then the processing continues.

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