Base structure for large shield launching

Abstract

The utility model relates to the technical field of shield launching corollary equipment, in particular to a large shield launching base structure which comprises a tail shield launching base, a front and middle shield launching base is arranged at one end of the tail shield launching base, and side face bases are arranged on the two sides of the tail shield launching base and the two sides of the front and middle shield launching base. Sliding rails are arranged on the tail shield starting base, the front middle shield starting base and the side face base, and the first supporting assembly is movably arranged between the front middle shield starting base and the side face base; the second supporting assembly is movably arranged on the side face base; by arranging the two movable supporting assemblies, when the shield tunneling machine is installed, the first supporting assembly can be supported at the bottom of the shield tunneling machine, the second supporting assembly can be supported on the two sides of the shield tunneling machine, and the two supporting assemblies can move forwards along with the shield tunneling machine, so that supporting force is provided for the shield tunneling machine; and the overall stability of the shield tunneling machine is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machine launching supporting equipment, in particular to a base structure for launching a large shield machine. Background Art

[0002] In recent years, with the expansion of cities, there are more and more urban subways and water diversion shield tunnels. Subway section tunnels and stations are excavated with large-diameter shields, forming a single-hole double-track tunnel at one time. The station is expanded on the basis of the shield tunnel. This construction method and engineering planning can better solve the difficulties encountered in the current conventional subway engineering planning. However, the risk of large-diameter shields is greater than that of ordinary small-diameter shields during the initial operation.

[0003] At present, during the start-up of large-diameter shield machines, when the shield machine is excavating, the cutterhead cuts the soil, causing a reaction force, which may cause the shield machine to twist, thus affecting the start-up of the shield machine. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned shortcomings and provide a base structure for launching a large shield machine.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A base structure for launching a large shield includes a tail shield launching base, a front middle shield launching base is arranged at one end of the tail shield launching base, side bases are arranged on both sides of the tail shield launching base and the front middle shield launching base, and slide rails are arranged on the tail shield launching base, the front middle shield launching base and the side base, and also includes:

[0007] The first support assembly is movably arranged between the front middle shield starting base and the side base, and is used to support the shield machine;

[0008] The second supporting assembly is movably arranged on the side base to support the shield machine at the side.

[0009] Furthermore, the first supporting assembly includes a first movable slider sliding on the side base and a second movable slider sliding on the front middle shield starting base, a base plate is arranged between the first movable slider and the second movable slider, a bracket is arranged on the base plate, and a first supporting plate for supporting the shield machine is arranged on the bracket.

[0010] Furthermore, a lead screw is rotatably arranged inside the first movable slider, a first lifting slider is sleeved on the lead screw, the base plate is a telescopic structure, and one end of the base plate is rotatably connected to the first lifting slider, the other end of the base plate is rotatably connected to the second movable slider, and the first support plate is rotatably connected to the bracket.

[0011] Furthermore, a positioning assembly is provided between the first support plate and the bracket, and the positioning assembly is used to allow the first support plate to be tightly attached to the shield machine.

[0012] Furthermore, the positioning assembly includes a movable rod located between the bracket and the first support plate, a sliding rod is arranged in the bracket, a second lifting slider is sleeved on the sliding rod, one end of the movable rod is rotatably connected to the second lifting slider, and the other end of the movable rod is rotatably connected to the first support plate, and a limit spring sleeved on the sliding rod is arranged at the bottom of the second lifting slider.

[0013] Furthermore, the second support assembly includes a lifting rod, a vertical plate is arranged on the top of the lifting rod, a hydraulic rod is arranged in the vertical plate, the movable end of the hydraulic rod is connected to the second support plate, and a third movable slider is arranged at the bottom end of the lifting rod and is slidably connected to the side base.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model is provided with two movable support components. When the shield machine is installed, the first support component can be supported on the bottom of the shield machine, and the second support component can be supported on both sides of the shield machine. The two support components can also move forward with the shield machine, thereby giving the shield machine a supporting force and improving the overall stability of the shield machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the first supporting assembly of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the positioning assembly of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the second supporting assembly of the utility model.

[0021] In the figure: 1. tail shield starting base; 2. front middle shield starting base; 3. side base; 4. slide rail; 5. first support assembly; 51. first movable slider; 52. second movable slider; 53. lead screw; 54. first lifting slider; 55. bottom plate; 56. bracket; 57. first support plate; 58. positioning assembly; 581. slide rod; 582. movable rod; 583. second lifting slider; 584. limit spring; 6. second support assembly; 61. lifting rod; 62. vertical plate; 63. hydraulic rod; 64. second support plate; 65. third movable slider. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0024] Reference Figure 1-Figure 4 As shown, a base structure for launching a large shield includes a tail shield launching base 1, a front middle shield launching base 2 is arranged at one end of the tail shield launching base 1, side bases 3 are arranged on both sides of the tail shield launching base 1 and the front middle shield launching base 2, and slide rails 4 are arranged on the tail shield launching base 1, the front middle shield launching base 2 and the side base 3, and also includes:

[0025] The first support assembly 5 can be provided with two groups, which are mainly supported on the front and rear sides of the shield machine and are movably provided in the gap between the front middle shield starting base 2 and the side base 3. After the shield machine is set on the base, the first support assembly 5 can be started so that the movable end of the first support assembly 5 is closely attached to the bottom of the shield machine, so as to support the shield machine;

[0026] The second support assembly 6 may also be provided in two groups, corresponding to the first support assembly 5, and movably provided on the side base 3, and clamped on the shield machine at the side, for supporting the shield machine;

[0027] And when the shield machine moves forward, the first support assembly 5 and the second support assembly 6 will follow the movement until they move to the other end of the base, so as to provide support to the shield machine and avoid twisting when the shield machine is excavating.

[0028] In one embodiment, the first support assembly 5 includes a first movable slider 51 sliding on the side base 3 and a second movable slider 52 sliding on the front middle shield starting base 2, a bottom plate 55 is arranged between the first movable slider 51 and the second movable slider 52, a bracket 56 is arranged on the bottom plate 55, and a first support plate 57 for supporting the shield machine is arranged on the bracket 56;

[0029] After the shield machine is set on the base, the first support plate 57 on the bracket 56 is supported on the bottom of the shield machine, and during the forward movement of the shield machine, the two movable slide blocks can slide forward along their respective slide grooves.

[0030] In one embodiment, a lead screw 53 is rotatably disposed in the first movable slider 51, and a driving motor may be disposed at one end of the lead screw 53, mainly to provide sufficient force, and a first lifting slider 54 is sleeved on the lead screw 53, and the bottom plate 55 is a telescopic structure, mainly because after the first lifting slider 54 performs a lifting movement, the distance between the first lifting slider 54 and the second movable slider 52 will change, and one end of the bottom plate 55 is rotatably connected to the first lifting slider 54, and the other end of the bottom plate 55 is rotatably connected to the second movable slider 52, and the first support plate 57 is rotatably connected to the bracket 56;

[0031] At the beginning, the first support plate 57 may not be in contact with the shield machine. At this time, the first lifting slider 54 can be driven to move upward by rotating the screw 53, and the first lifting slider 54 can drive the first support plate 57 to move upward, so that the first support plate 57 is close to the bottom of the shield machine.

[0032] In one embodiment, a positioning assembly 58 is further provided between the first support plate 57 and the bracket 56. The positioning assembly 58 has a certain elasticity. Under the action of the elastic force, the positioning assembly 58 allows the first support plate 57 to be closely attached to the shield machine.

[0033] Since the bottom plate 55 will deflect upward, and the first support plate 57 will also make adaptive rotation, after the first support plate 57 is tightly attached to the shield machine, its side close to the positioning assembly 58 will deflect downward, which will compress the positioning assembly 58. The positioning assembly 58 can provide certain support to the first support plate 57 by using its own elastic force, thereby ensuring that the first support plate 57 can be tightly attached to the shield machine.

[0034] In one embodiment, the positioning assembly 58 includes a movable rod 582 located between the bracket 56 and the first support plate 57, a slide rod 581 is provided in the bracket 56, a second lifting slider 583 is sleeved on the slide rod 581, one end of the movable rod 582 is rotatably connected to the second lifting slider 583, and the other end of the movable rod 582 is rotatably connected to the first support plate 57, and a limit spring 584 sleeved on the slide rod 581 is provided at the bottom of the second lifting slider 583;

[0035] After the first support plate 57 deflects downward, the first support plate 57 presses down the movable rod 582, and the movable rod 582 moves downward and compresses the limit spring 584, so that the elastic force of the limit spring 584 can be used to provide an upward supporting force for the first support plate 57.

[0036] In one embodiment, the second support assembly 6 includes a lifting rod 61, a vertical plate 62 is provided on the top of the lifting rod 61, a hydraulic rod 63 is provided inside the vertical plate 62, a movable end of the hydraulic rod 63 is connected to the second support plate 64, and a third movable slider 65 slidably connected to the side base 3 is provided at the bottom end of the lifting rod 61;

[0037] The second support plate 64 is moved to the center of the shield machine through the lifting rod 61, and then the hydraulic rod 63 pushes the second support plate 64, so that the second support plate 64 can be clamped on the side of the shield machine, and the second support assembly 6 as a whole can be moved forward on the side base 3 along with the advancement of the shield machine through the third movable slider 65.

[0038] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A base structure for launching a large shield, comprising a tail shield launching base (1), a front middle shield launching base (2) being arranged at one end of the tail shield launching base (1), side bases (3) being arranged on both sides of the tail shield launching base (1) and the front middle shield launching base (2), and slide rails (4) being arranged on the tail shield launching base (1), the front middle shield launching base (2) and the side bases (3), wherein: Also includes: A first support assembly (5) is movably disposed between the front middle shield starting base (2) and the side base (3) and is used to support the shield machine; The second support assembly (6) is movably arranged on the side base (3) to support the shield machine at the side.

2. A base structure for launching a large shield according to claim 1, characterized in that: The first support assembly (5) comprises a first movable slider (51) sliding on the side base (3) and a second movable slider (52) sliding on the front middle shield starting base (2), a bottom plate (55) is arranged between the first movable slider (51) and the second movable slider (52), a bracket (56) is arranged on the bottom plate (55), and a first support plate (57) for supporting the shield machine is arranged on the bracket (56).

3. A base structure for launching a large shield according to claim 2, characterized in that: A lead screw (53) is rotatably arranged inside the first movable slider (51), a first lifting slider (54) is sleeved on the lead screw (53), a bottom plate (55) is a telescopic structure, one end of the bottom plate (55) is rotatably connected to the first lifting slider (54), the other end of the bottom plate (55) is rotatably connected to the second movable slider (52), and the first support plate (57) is rotatably connected to the bracket (56).

4. A base structure for launching a large shield according to claim 3, characterized in that: A positioning assembly (58) is also provided between the first support plate (57) and the bracket (56), and the positioning assembly (58) is used to allow the first support plate (57) to be closely attached to the shield machine.

5. A base structure for launching a large shield according to claim 4, characterized in that: The positioning assembly (58) comprises a movable rod (582) located between the bracket (56) and the first support plate (57); a slide rod (581) is arranged in the bracket (56); a second lifting slider (583) is sleeved on the slide rod (581); one end of the movable rod (582) is rotatably connected to the second lifting slider (583); the other end of the movable rod (582) is rotatably connected to the first support plate (57); and a limit spring (584) sleeved on the slide rod (581) is arranged at the bottom of the second lifting slider (583).

6. The base structure for launching a large shield machine according to claim 1, characterized in that: The second support assembly (6) comprises a lifting rod (61), a vertical plate (62) is arranged on the top of the lifting rod (61), a hydraulic rod (63) is arranged inside the vertical plate (62), a movable end of the hydraulic rod (63) is connected to a second support plate (64), and a third movable slider (65) is arranged at the bottom end of the lifting rod (61) and is slidably connected to the side base (3).

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