Stabilizing mechanism of shield tunneling machine and shield tunneling machine

Abstract

The invention relates to the technical field of shield tunneling machines, and discloses a shield tunneling machine stabilizing mechanism and a shield tunneling machine, the shield tunneling machine stabilizing mechanism comprises a shield tunneling machine rear shield and a shield tunneling machine front shield, spring dampers are fixedly connected to the side walls of an inner cavity of the shield tunneling machine rear shield, fixing rods are fixedly connected to the opposite ends of the two spring dampers, and two sliding blocks are slidably connected to the outer walls of the fixing rods; movable rods are movably arranged at one ends of the two sliding blocks, limiting springs are fixedly connected to the ends, away from the spring dampers, of the sliding blocks, mounting blocks are movably arranged at one ends of the movable rods, hydraulic push rods are fixedly connected to the two sides of an inner cavity of the rear shield of the shield tunneling machine, and connecting sleeves are fixedly connected to the extending ends of the two hydraulic push rods; a reset spring is installed in an inner cavity of the connecting sleeve, and a connecting rod is slidably arranged in the inner cavity of the connecting sleeve. According to the shield tunneling machine, the impact force borne by the spring damper is weakened under the action of cooperation of the spring damper, the limiting spring and the sliding block, the movable rod is prevented from being damaged due to too large pressure, and therefore the stability of the shield tunneling machine during use is improved.

Description

Technical Field

[0001] The invention relates to the technical field of shield machines, and in particular to a stabilizing mechanism of a shield machine and the shield machine. Background Art

[0002] A shield machine is a tunnel boring machine that uses the shield method. Internationally, the broad sense of shield machines can also be used in rock formations, but it is different from open (non-shield method) tunnel boring machines. In my country, tunnel boring machines used in soft soil formations are customarily called shield machines. The use of shield machines for tunnel construction has the characteristics of high degree of automation, labor saving, fast construction speed, one-time hole formation, no influence of climate, control of ground subsidence during excavation, reduced impact on ground buildings, and no impact on ground traffic during underwater excavation. When the tunnel line is long and the burial depth is deep, it is more economical and reasonable to use shield machines for construction.

[0003] After searching, application number CN202023014153.1 discloses a shield machine articulation device, including a shield machine front shield and a cutterhead assembly connected to the shield machine front shield, and the front shield of the shield machine is provided with a hinge mechanism on the side away from the cutterhead assembly for facilitating the use of the shield machine when excavating in a curve and improving the sealing effect. This shield machine articulation device is different from the prior art, so that technicians can avoid the poor sealing performance caused by excessive deformation of the seal near the inner and outer sides of the turning radius during actual use. Through the articulation mechanism, the shield machine can improve the sealing effect when excavating in a curve, avoid mud entering the equipment to the greatest extent, and improve the stability of the equipment operation.

[0004] In the above-mentioned existing technical solutions, the shield machine will be subject to the resistance of the soil layer in front and the thrust of the jack at the rear when advancing, which makes the hinge mechanism of the rear shield and the front shield of the shield machine subject to great pressure. Excessive pressure can easily cause the hinge mechanism to twist, deform and be damaged, thereby affecting the stability of the shield machine during use.

[0005] To this end, we propose a stabilizing mechanism of a shield machine and a shield machine. Summary of the invention

[0006] The present invention mainly solves the technical problems existing in the above-mentioned prior art and provides a stabilizing mechanism of a shield machine and a shield machine.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a stabilizing mechanism of a shield machine and a shield machine, comprising a rear shield of the shield machine and a front shield of the shield machine, the side walls of the inner cavity of the rear shield of the shield machine are fixedly connected with spring dampers, the opposite ends of the two spring dampers are fixedly connected with fixed rods, the outer walls of the fixed rods are slidably connected with two sliding blocks, one end of the two sliding blocks are movably provided with movable rods, the end of the sliding block away from the spring damper is fixedly connected with a limiting spring, one end of the movable rod is movably provided with a mounting block, both sides of the inner cavity of the rear shield of the shield machine are fixedly connected with hydraulic push rods, the protruding ends of the two hydraulic push rods are fixedly connected with connecting sleeves, the inner cavity of the connecting sleeves is installed with a reset spring, and the inner cavity of the connecting sleeves is slidably provided with a connecting rod.

[0008] Preferably, a side of the front shield of the shield machine close to the mounting block is fixedly connected to the mounting block, and the sliding block is fixedly connected to one end of the spring damper.

[0009] Preferably, a cutterhead cooling fin having an annular structure is fixedly connected to the outer wall surface of the front shield of the shield machine.

[0010] Preferably, the outer side walls of the rear shield and the front shield of the shield machine are fixedly connected with a wear-resistant protective layer.

[0011] Preferably, the wear-resistant protective layer is made of a cemented carbide material made of tungsten carbide and cobalt powder.

[0012] Preferably, one end of the connecting rod away from the return spring is in contact with the bottom of the front shield of the shield machine.

[0013] Preferably, the movable rod is arranged in an inclined shape.

[0014] A shield machine comprises the above-mentioned stabilizing mechanism of the shield machine.

[0015] Beneficial Effects

[0016] The present invention provides a stabilizing mechanism of a shield machine and a shield machine, which have the following beneficial effects:

[0017] 1. The stabilizing mechanism and the shield machine of the shield machine have the impact force weakened by the cooperation of two spring dampers, a limit spring and a sliding block, so as to avoid damage to the movable rod due to excessive pressure, and at the same time make the rear shield and the front shield of the shield machine more stable, thereby improving the stability of the shield machine during use.

[0018] 2. The stabilizing mechanism and shield machine of the shield machine, through the pressure of the shield machine cutter head to the installation frame, at this time, the connecting rod compresses the reset spring, and the connecting rod and the reset spring play an auxiliary buffering role.

[0019] 3. The stabilizing mechanism and shield machine of the shield machine are designed with the heat dissipation fins of the cutter head into a ring structure. Such a design forms a plurality of air ducts for air circulation, promotes the flow of air, and then plays a role in partial heat dissipation during the use of the front shield of the shield machine.

[0020] 4. The stabilizing mechanism and the shield machine of this shield machine have a wear-resistant protective layer made of cemented carbide made of tungsten carbide and cobalt powder, which has extremely high hardness and excellent wear resistance. The cemented carbide can effectively resist wear and is relatively light, which helps to reduce the overall weight of the rear shield and the front shield of the shield machine.

[0021] 5. The stabilizing mechanism and the shield machine of the shield machine, the rear shield and the front shield of the shield machine are made of aluminum alloy material as a whole. The aluminum alloy material has the advantages of high hardness and light weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the implementation of the present invention or the technical solution in the prior art, the following briefly introduces the drawings required for the implementation or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0023] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0024] Figure 1 It is a three-dimensional schematic diagram of the structure of the present invention;

[0025] Figure 2 It is a three-dimensional schematic diagram of the structure of the present invention;

[0026] Figure 3 It is a three-dimensional schematic diagram of the structure of the present invention;

[0027] Figure 4 It is a three-dimensional schematic diagram of the structure of the present invention;

[0028] Figure 5 It is a schematic diagram of the inner cavity of the connecting sleeve structure of the present invention.

[0029] Legend:

[0030] 1. Shield machine rear shield; 2. Shield machine front shield; 201. Cutter head cooling fins; 3. Hydraulic push rod; 301. Connecting sleeve; 302. Connecting rod; 303. Reset spring; 4. Spring damper; 401. Fixed rod; 402. Limit spring; 403. Sliding block; 404. Movable rod; 405. Mounting block; 5. Wear-resistant protective layer. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1: A stabilizing mechanism of a shield machine, such as Figure 1-Figure 5 As shown, it includes a shield machine back shield 1 and a shield machine front shield 2. The symmetrical side walls of the inner cavity of the shield machine back shield 1 are fixedly connected with spring dampers 4. The opposite ends of the two spring dampers 4 are fixedly connected with fixed rods 401. The outer wall of the fixed rod 401 is slidably connected with two sliding blocks 403 fixedly connected with one end of the spring damper 4. The ends of the two sliding blocks 403 close to the shield machine front shield 2 are movably provided with movable rods 404. The ends of the sliding blocks 403 away from the spring damper 4 are fixedly connected with a limiting spring 402. The ends of the movable rods 404 away from the sliding blocks 403 are movably provided with a mounting block 405. The movable rods 404 are arranged in an inclined shape. When the movable rod 404 drives the sliding block 403 to compress the spring damper 4, it can slide left and right along the outer wall of the fixed rod 401. The mounting block 405 is fixedly installed on the wall surface of the front shield 2 of the shield machine near one side of the front shield 2 of the shield machine. The inner cavity of the rear shield 1 of the shield machine and on both sides of the fixed rod 401 are fixedly connected with hydraulic push rods 3. The extended ends of the two hydraulic push rods 3 are fixedly connected with connecting sleeves 301. The inner cavity of the connecting sleeve 301 is installed with a reset spring 303. The inner cavity of the connecting sleeve 301 and the other end of the reset spring 303 are slidably provided with a connecting rod 302. The ends of the two connecting rods 302 away from the reset spring 303 are both in contact with the bottom of the front shield 2 of the shield machine.

[0033] Embodiment 2: A stabilizing mechanism of a shield machine, such as Figure 1-Figure 5As shown, it includes a shield machine back shield 1 and a shield machine front shield 2. The symmetrical side walls of the inner cavity of the shield machine back shield 1 are fixedly connected with spring dampers 4. The opposite ends of the two spring dampers 4 are fixedly connected with fixed rods 401. The outer wall of the fixed rod 401 is slidably connected with two sliding blocks 403 fixedly connected with one end of the spring damper 4. The ends of the two sliding blocks 403 close to the shield machine front shield 2 are movably provided with movable rods 404. The ends of the sliding blocks 403 away from the spring damper 4 are fixedly connected with a limiting spring 402. The ends of the movable rods 404 away from the sliding blocks 403 are movably provided with a mounting block 405. The movable rods 404 are arranged in an inclined shape. When the movable rod 404 drives the sliding block 403 to compress the spring damper 4, it can slide left and right along the outer wall of the fixed rod 401. The mounting block 405 is fixedly installed on the wall surface of the front shield 2 of the shield machine near one side of the front shield 2 of the shield machine. The inner cavity of the rear shield 1 of the shield machine and on both sides of the fixed rod 401 are fixedly connected with hydraulic push rods 3. The extended ends of the two hydraulic push rods 3 are fixedly connected with connecting sleeves 301. The inner cavity of the connecting sleeve 301 is installed with a reset spring 303. The inner cavity of the connecting sleeve 301 and the other end of the reset spring 303 are slidably provided with a connecting rod 302. The ends of the two connecting rods 302 away from the reset spring 303 are both in contact with the bottom of the front shield 2 of the shield machine.

[0034] A cutterhead cooling fin 201 with an annular structure is fixedly connected to the outer wall surface of the front shield 2 of the shield machine. By designing the cutterhead cooling fin 201 into an annular structure, such a design forms a plurality of air ducts, promotes the flow of air, and then plays a role in partial heat dissipation during the use of the front shield 2 of the shield machine.

[0035] Embodiment 3: A stabilizing mechanism of a shield machine, such as Figure 1-Figure 5As shown, it includes a shield machine back shield 1 and a shield machine front shield 2. The symmetrical side walls of the inner cavity of the shield machine back shield 1 are fixedly connected with spring dampers 4. The opposite ends of the two spring dampers 4 are fixedly connected with fixed rods 401. The outer wall of the fixed rod 401 is slidably connected with two sliding blocks 403 fixedly connected with one end of the spring damper 4. The ends of the two sliding blocks 403 close to the shield machine front shield 2 are movably provided with movable rods 404. The ends of the sliding blocks 403 away from the spring damper 4 are fixedly connected with a limiting spring 402. The ends of the movable rods 404 away from the sliding blocks 403 are movably provided with a mounting block 405. The movable rods 404 are arranged in an inclined shape. When the movable rod 404 drives the sliding block 403 to compress the spring damper 4, it can slide left and right along the outer wall of the fixed rod 401. The mounting block 405 is fixedly installed on the wall surface of the front shield 2 of the shield machine near one side of the front shield 2 of the shield machine. The inner cavity of the rear shield 1 of the shield machine and on both sides of the fixed rod 401 are fixedly connected with hydraulic push rods 3. The extended ends of the two hydraulic push rods 3 are fixedly connected with connecting sleeves 301. The inner cavity of the connecting sleeve 301 is installed with a reset spring 303. The inner cavity of the connecting sleeve 301 and the other end of the reset spring 303 are slidably provided with a connecting rod 302. The ends of the two connecting rods 302 away from the reset spring 303 are both in contact with the bottom of the front shield 2 of the shield machine.

[0036] A cutterhead cooling fin 201 with an annular structure is fixedly connected to the outer wall surface of the front shield 2 of the shield machine. By designing the cutterhead cooling fin 201 into an annular structure, such a design forms a plurality of air ducts, promotes the flow of air, and then plays a role in partial heat dissipation during the use of the front shield 2 of the shield machine.

[0037] The outer wall surfaces of the shield machine back shield 1 and the shield machine front shield 2 are fixedly connected with a wear-resistant protective layer 5, which is made of a cemented carbide material made of tungsten carbide and cobalt powder, and has extremely high hardness and excellent wear resistance. Cemented carbide can effectively resist wear and is relatively light, which helps to reduce the overall weight of the shield machine back shield 1 and the shield machine front shield 2. The shield machine back shield 1 and the shield machine front shield 2 are made of aluminum alloy materials as a whole, which have the advantages of high hardness and light weight.

[0038] The present application also proposes a shield machine, which includes the stabilizing mechanism of the above-mentioned shield machine. The specific structure of the stabilizing mechanism of the shield machine refers to the above-mentioned embodiment. Since the present shield machine adopts all the technical solutions of all the above-mentioned embodiments, it also has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0039] Working principle of the present invention:

[0040] When in use, the sliding block 403 compresses the spring damper 4 and slides left and right along the outer wall of the fixed rod 401. The impact force is weakened under the cooperation of the two spring dampers 4, the limit spring 402 and the sliding block 403, avoiding damage to the movable rod 404 due to excessive pressure. At the same time, the shield machine rear shield 1 and the shield machine front shield 2 are more stable and less prone to damage.

[0041] When in use, the shield machine cutter head 2 exerts pressure on the mounting frame 1 , and the connecting rod 302 compresses the return spring 303 , thereby playing an auxiliary buffering role through the connecting rod 302 and the return spring 303 .

[0042] When in use, by designing the cutter head heat dissipation fins 201 into a ring structure, such a design forms multiple air ducts for air circulation, promotes the flow of air, and then plays a role in partial heat dissipation during the use of the front shield 2 of the shield machine.

[0043] When in use, the wear-resistant protective layer 5 is made of a cemented carbide material made of tungsten carbide and cobalt powder, which has extremely high hardness and excellent wear resistance. The cemented carbide can effectively resist wear and is relatively light, which helps to reduce the overall weight of the shield machine rear shield 1 and the shield machine front shield 2.

[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0050] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A stabilizing mechanism for a shield machine, comprising a rear shield (1) and a front shield (2), characterized in that: The inner side walls of the shield machine back shield (1) are fixedly connected to spring dampers (4), the opposite ends of the two spring dampers (4) are fixedly connected to fixed rods (401), the outer walls of the fixed rods (401) are slidably connected to two sliding blocks (403), one end of the two sliding blocks (403) is movably provided with movable rods (404), one end of the sliding blocks (403) away from the spring dampers (4) is fixedly connected to a limit spring (402), one end of the movable rod (404) is movably provided with a mounting block (405), both sides of the inner cavity of the shield machine back shield (1) are fixedly connected to hydraulic push rods (3), the protruding ends of the two hydraulic push rods (3) are fixedly connected to connecting sleeves (301), the inner cavity of the connecting sleeves (301) is installed with a reset spring (303), and the inner cavity of the connecting sleeves (301) is slidably provided with connecting rods (302).

2. A stabilizing mechanism for a shield machine according to claim 1, characterized in that: The side of the front shield (2) of the shield machine close to the mounting block (405) is fixedly connected to the mounting block (405), and the sliding block (403) is fixedly connected to one end of the spring damper (4).

3. The stabilizing mechanism of a shield machine according to claim 1, characterized in that: A cutterhead cooling fin (201) with an annular structure is fixedly connected to the outer wall surface of the front shield (2) of the shield machine.

4. The stabilizing mechanism of a shield machine according to claim 1, characterized in that: The outer side walls of the shield machine rear shield (1) and the shield machine front shield (2) are both fixedly connected with a wear-resistant protective layer (5).

5. A stabilizing mechanism for a shield machine according to claim 4, characterized in that: The wear-resistant protective layer (5) is made of a hard alloy material made of tungsten carbide and cobalt powder.

6. The stabilizing mechanism of a shield machine according to claim 1, characterized in that: One end of the connecting rod (302) away from the return spring (303) is in contact with the bottom of the front shield (2) of the shield machine.

7. The stabilizing mechanism of a shield machine according to claim 1, characterized in that: The movable rod (404) is arranged in an inclined shape.

8. A shield machine, characterized in that: A stabilizing mechanism for a shield machine comprising the following:

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