Shield machine stable receiving device

Abstract

The present application relates to the technical field of shield construction, and in particular to a stable receiving device for a shield machine, including a steel sleeve, an inner push mechanism is provided on the lower side of the steel sleeve, the inner push mechanism includes an inner push body and an inner roller whose axis direction is perpendicular to the axis of the steel sleeve, the inner roller is provided on the inner push body and protrudes from the inner wall of the steel sleeve, so that the shield machine can move on the inner roller after entering the steel sleeve. The stable receiving device for a shield machine provided in the present application, through the inner push mechanism, allows the shield machine to move on the inner roller when entering the steel sleeve filled with mud and sand, converting the original sliding friction into rolling friction with less friction, thereby balancing the friction between the shield machine and the steel sleeve, and greatly reducing the risk of the shield machine tilting forward.

Description

[Technical field]

[0001] The present application relates to the technical field of shield construction, and in particular to a stable receiving device for a shield machine. [Background technology]

[0002] As the main method of urban subway construction, the shield tunnel method is generally constructed in units of station sections. The construction risk will increase significantly when the shield machine reaches the end of the section. Traditional methods require reinforcement of the section end, such as high-pressure jet grouting reinforcement, grouting reinforcement, freezing reinforcement, etc. However, the large number of underground pipelines in the city will limit the scope of end reinforcement and increase the probability of surface collapse. The shield machine uses a steel sleeve to receive, which can maintain the water and soil pressure balance in front of the shield machine cutter head, prevent water and sand gushing, and ensure the stability of the soil around the shield construction well.

[0003] After the shield machine enters the steel sleeve filled with mud and sand, the front shield body accounts for most of the weight of the shield machine, and the risk of the shield machine tilting forward and "falling headfirst" is greatly increased. [Summary of the invention]

[0004] The purpose of the present application is to provide a stable receiving device for a shield machine. Through the internal pushing mechanism, when the shield machine enters a steel sleeve filled with mud and sand, the lower side of the shield machine moves on the inner roller, converting the original sliding friction into rolling friction with smaller friction, thereby balancing the friction between the shield machine and the steel sleeve and greatly reducing the risk of the shield machine tilting forward.

[0005] A stable receiving device for a shield machine comprises a steel sleeve, wherein an inner pushing mechanism is arranged on the lower side of the steel sleeve, wherein the inner pushing mechanism comprises an inner pushing body and an inner roller whose axial direction is perpendicular to the axial direction of the steel sleeve, and the inner roller is arranged on the inner pushing body and protrudes from the inner wall of the steel sleeve, so that the shield machine can move on the inner roller after entering the steel sleeve.

[0006] As described above, in the stable receiving device for the shield machine, the two inner pushing mechanisms are arranged in a row and in an "eight" shape on the lower side of the steel sleeve, and the inner pushing body comprises an inner pushing shell and an inner pushing adjustment mechanism arranged in the inner pushing shell and capable of adjusting the distance of the inner roller protruding from the inner wall of the steel sleeve.

[0007] As described above, in the stable receiving device for the shield machine, a mud guard frame is provided inside the inner thrust shell, and the mud guard frame is arranged around the circumference of the inner roller.

[0008] As described above, in the stable receiving device for the shield machine, the inner pushing mechanism is provided in multiple rows along the axial direction of the steel sleeve.

[0009] The shield machine stable receiving device as described above, the inner push adjustment mechanism includes an inner push threaded plate and an inner push support frame, the inner push threaded plate is fixed to the inner push shell, the upper end of the inner push support frame is hinged with an inner push rotating shaft, the inner roller is rotatably sleeved on the inner push rotating shaft, and the lower end of the inner push support frame is hinged with an inner push screw that penetrates the inner push threaded plate and is threadedly connected to the inner push threaded plate;

[0010] The inner push housing is provided with an inner push slide groove, and the inner push support frame can be slidably embedded in the inner push slide groove;

[0011] The inner push screw is rotated, and the inner push support frame slides along the inner push slide groove to drive the inner roller to protrude or retract relative to the inner wall of the steel sleeve.

[0012] As described above, in the shield machine stable receiving device, a grease injection channel connecting the threaded connection and the outside is provided in the inner push threaded plate, and a sealing rubber valve is provided at the inlet of the grease injection channel.

[0013] The shield machine stable receiving device as described above further comprises an outer pushing mechanism and a steel sleeve base, wherein two outer pushing mechanisms are provided and are respectively arranged below the inner pushing mechanism, wherein the outer pushing mechanism comprises an outer pushing body and an outer roller whose axis direction is perpendicular to the axis direction of the steel sleeve, wherein the outer roller is arranged on the outer pushing body so that the steel sleeve travels on the steel sleeve base through the outer roller;

[0014] The outer push body comprises an outer push shell and an outer push adjustment mechanism which is arranged in the outer push shell and can adjust the outer roller to extend downward.

[0015] The shield machine stable receiving device as described above, the outer push adjustment mechanism includes an outer push threaded plate and an outer push support frame, the outer push threaded plate is fixed to the outer push shell, the upper end of the outer push support frame is hinged with an outer push shaft, the outer roller is rotatably sleeved on the outer push shaft, and the lower end of the outer push support frame is hinged with an outer push screw that penetrates the outer push threaded plate and is threadedly connected to the outer push threaded plate;

[0016] The outer push housing is provided with an outer push slide groove, and the outer push support frame can be slidably embedded in the outer push slide groove;

[0017] The outer push screw is rotated, and the outer push support frame slides along the outer push slide groove to drive the outer roller to extend and retract downward.

[0018] As described above, in the stable receiving device for the shield machine, the steel sleeve base includes a base and two guide rails, the top of the base is an arc-shaped surface, and the two guide rails are respectively arranged on both sides of the arc-shaped surface and correspond to the outer roller so that the outer roller travels on the guide rails.

[0019] As described above, in the stable receiving device for the shield machine, the outer thrust shell is provided with a downwardly protruding limit groove, and when the outer roller travels on the guide rail, the limit groove is clamped on both sides of the guide rail.

[0020] Compared with the prior art, this application has the following advantages:

[0021] 1. Through the inner push mechanism, when the shield machine enters the steel sleeve filled with mud and sand, the lower side of the shield machine moves on the inner roller, converting the original sliding friction into rolling friction with smaller friction, thereby balancing the friction between the shield machine and the steel sleeve, greatly reducing the risk of the shield machine tilting forward.

[0022] 2. The advantages of the inner push adjustment mechanism are that, on the one hand, by adjusting the distance that the inner roller protrudes from the inner wall of the steel sleeve, the contact between the shield machine and the steel sleeve can be made more complete; on the other hand, by adjusting the left and right inner push mechanisms in a row of inner push mechanisms respectively, the center position of the shield machine can be adjusted, thereby making the shield machine move more stably.

[0023] 3. Through the external jacking adjustment mechanism on the external jacking mechanism, the steel sleeve can be accurately adjusted to be aligned with the tunnel door of the construction well, making the reception of the shield machine more stable and reliable.

Brief Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0026] Figure 2 It is a front view of the inner pushing mechanism and the outer pushing mechanism described in the embodiment of the present application.

[0027] Figure 3 It is a left view of the inner pushing mechanism and the outer pushing mechanism described in the embodiment of the present application. [Specific implementation method]

[0028] In order to make the technical problems, technical solutions and beneficial effects solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0029] like Figures 1 to 3 As shown, an embodiment of the present application proposes a stable receiving device for a shield machine, comprising a steel sleeve 1, an inner pushing mechanism 2 being provided on the lower side of the steel sleeve 1, the inner pushing mechanism 2 comprising an inner pushing body 21 and an inner roller 22 whose axial direction is perpendicular to the axial direction of the steel sleeve 1, the inner roller 22 being provided on the inner pushing body 21 and protruding from the inner wall of the steel sleeve 1, so that the shield machine 10 can move on the inner roller 22 after entering the steel sleeve 1.

[0030] When the shield machine 10 enters the steel sleeve 1 filled with mud and sand, the friction between the shield body of the shield machine 10 and the sand in the steel sleeve 1 will affect the smooth advancement of the shield machine 10, especially under the action of the gravity of the shield machine 10, the friction force on the lower side is greater than the friction force on the upper side, and the front shield body of the shield machine 10 occupies most of the weight of the shield machine 10, which can easily cause the shield machine to tilt forward.

[0031] Through the internal pushing mechanism 2, when the shield machine 10 enters the steel sleeve 1 filled with mud and sand, the lower side of the shield machine 10 moves on the inner roller 22, converting the original sliding friction into rolling friction with smaller friction, thereby balancing the friction between the shield machine 10 and the steel sleeve 1, greatly reducing the risk of the shield machine tilting forward.

[0032] Correspondingly, the two inner push mechanisms 2 are arranged in a row and in an "eight" shape on the lower side of the steel sleeve 1, and the inner push mechanisms 2 are arranged in multiple rows along the axial direction of the steel sleeve 1, and the inner push body 21 includes an inner push shell 211 and an inner push adjustment mechanism 212 arranged in the inner push shell 211 and capable of adjusting the distance of the inner roller 22 protruding from the inner wall of the steel sleeve 1. The advantages are that, on the one hand, by adjusting the distance of the inner roller 22 protruding from the inner wall of the steel sleeve 1, the contact between the shield machine 10 and the steel sleeve 1 can be made more sufficient, and on the other hand, by adjusting the left and right inner push mechanisms 2 in a row of inner push mechanisms 2 respectively, the center position of the shield machine 10 can be adjusted, thereby making the shield machine 10 move more stably, for example, if the inner roller of the left inner push mechanism is protruded forward, the shield machine will deviate to the right, and similarly, if the inner roller of the right inner push mechanism is protruded forward, the shield machine will deviate to the left.

[0033] Preferably, a mud guard frame 23 is provided inside the inner push shell 211, and the mud guard frame 23 is arranged around the inner roller 22. In particular, the mud guard frame 23 is a square frame with a rectangular hole in the middle, and the rectangular hole is slightly larger than the cross section of the inner roller 22 passing through the axis, and the plane of the mud guard frame 23 passes through the axis of the inner roller 22. Since the inner push shell 211 has an opening for the inner roller 22 to move, it is easy for external mud and sand to enter the interior, affecting the normal operation of the shield machine stable receiving device. By surrounding the inner roller 22 with the mud guard frame 23, the inner roller 22 can be effectively prevented from sticking to sand and soil, and mud and other debris can be prevented from entering the interior.

[0034] Specifically, the inner push adjustment mechanism 212 includes an inner push threaded plate 2121 and an inner push support frame 2122. The inner push threaded plate 2121 is fixed to the inner push housing 211, such as by welding or bonding. The upper end of the inner push support frame 2122 is hinged with an inner push shaft, and the inner roller 22 is rotatably sleeved on the inner push shaft. The lower end of the inner push support frame 2122 is hinged with a screw thread that penetrates the inner push threaded plate 2121. 21 and an inner push screw 2124 threadedly connected to the inner push threaded plate 2121; an inner push groove 2111 is provided on the inner push shell 211, and the inner push support frame 2122 can be slidably embedded in the inner push groove 2111; the inner push screw 2124 is rotated, and the inner push support frame 2122 slides along the inner push groove 2111 to drive the inner roller 22 to protrude or retract relative to the inner wall of the steel sleeve 1.

[0035] Preferably, a grease injection channel 24 is provided in the inner push threaded plate 2121 to connect the threaded connection with the outside, and a sealing rubber valve is provided at the entrance of the grease injection channel 24. By injecting lubricating grease into the grease injection channel 24, the inner push screw 2124 can be rotated more smoothly, thereby adjusting the position of the inner roller 22.

[0036] The shield machine stable receiving device also includes an external jacking mechanism 3 and a steel sleeve base 4. The external jacking mechanism 3 is provided with two and is respectively arranged below the internal jacking mechanism 2. The external jacking mechanism 3 includes an external jacking body 31 and an external roller 32 whose axis direction is perpendicular to the axial direction of the steel sleeve 1. The external roller 32 is arranged on the external jacking body 31 so that the steel sleeve 1 travels on the steel sleeve base 4 through the external roller 32. The external jacking body 31 includes an external jacking shell 311 and an external jacking adjustment mechanism 312 arranged in the external jacking shell 311 and capable of adjusting the external roller 32 to extend downward.

[0037] The steel sleeve 1 is used to receive the shield machine 10. After being spliced ​​and installed in the construction well, it is often necessary to hoist it to the tunnel door for installation. Due to the small working space of the shield construction well, it is difficult to directly achieve the accurate hoisting of the steel sleeve 1. Through the external jacking adjustment mechanism 312 on the external jacking mechanism 3, the steel sleeve 1 can be accurately adjusted to align with the tunnel door of the construction well, making the reception of the shield machine 10 more stable and reliable.

[0038] The outer push adjustment mechanism 312 comprises an outer push threaded plate 3121 and an outer push support frame 3122. The outer push threaded plate 3121 is fixed to the outer push shell body 311, such as welded or bonded. The upper end of the outer push support frame 3122 is hinged with an outer push rotating shaft, and the outer roller 32 is rotatably sleeved on the outer push rotating shaft. The lower end of the outer push support frame 3122 is hinged with an outer push screw rod 3124 that penetrates the outer push threaded plate 3121 and is threadedly connected to the outer push threaded plate 3121. The outer push shell body 311 is provided with an outer push slide groove 3111, and the outer push support frame 3122 can be slidably embedded in the outer push slide groove 3111. When the outer push screw 3124 is rotated, the outer push support frame 3122 slides along the outer push slide groove 3111 to drive the outer roller 32 to extend and retract downward. More specifically, the outer push shell 311 and the inner push shell 211 are integrally formed, and the outer push shell 311 and the inner push shell 211 are provided with through holes through which a wrench can be inserted to rotate the inner push screw 2124 or the outer push screw 3124 .

[0039] Correspondingly, the steel sleeve base 4 includes a base 41 and two guide rails 42. The top of the base 41 is an arc surface. The two guide rails 42 are respectively arranged on both sides of the arc surface and correspond to the outer roller 32, so that the outer roller 32 travels on the guide rails 42. The structure is simple and the support is stable and reliable.

[0040] Furthermore, the outer push shell 311 is provided with a downwardly protruding limit groove 33, and when the outer roller 32 travels on the guide rail 42, the limit groove 33 is clamped on both sides of the guide rail 42. The travel path of the outer roller 32 can be effectively limited to prevent derailment.

[0041] To better understand the technical solution of this embodiment, its working principle is described as follows:

[0042] When adjusting the protruding or retracted position of the inner roller 22 relative to the inner wall of the steel sleeve 1, a wrench can be used to rotate the inner push screw 2124, and the inner push support frame 2122 can slide along the inner push slide groove 2111 to drive the inner roller 22 to protrude relative to the inner wall of the steel sleeve 1 until it can resist the shield machine. Through multiple adjustment tests, the shield machine can be placed in the center of the steel sleeve; since the external push mechanism 3 is arranged below the internal push mechanism 2, that is, it also presents a row of two "eight" supports, the steel sleeve 1 can be adjusted to be aligned with the center of the tunnel entrance of the construction well by adjusting the extension and retraction of the "eight"-shaped external push adjustment mechanism 312.

[0043] In summary, this application has but is not limited to the following beneficial effects:

[0044] 1. When the shield machine 10 enters the steel sleeve 1 filled with mud and sand through the inner pushing mechanism 2, the lower side of the shield machine 10 moves on the inner roller 22, converting the original sliding friction into rolling friction with smaller friction, thereby balancing the friction between the shield machine 10 and the steel sleeve 1, greatly reducing the risk of the shield machine tilting forward.

[0045] 2. The advantages of the inner push adjustment mechanism 212 are that, on the one hand, by adjusting the distance that the inner roller 22 protrudes from the inner wall of the steel sleeve 1, the contact between the shield machine 10 and the steel sleeve 1 can be made more sufficient; on the other hand, by adjusting the left and right inner push mechanisms 2 in a row of inner push mechanisms 2 respectively, the center position of the shield machine 10 can be adjusted, thereby making the shield machine 10 move more stably.

[0046] 3. Through the external jacking adjustment mechanism 312 on the external jacking mechanism 3, the steel sleeve 1 can be accurately adjusted to be aligned with the tunnel door of the construction well, so that the reception of the shield machine 10 is more stable and reliable.

[0047] It should be understood that the terms "first", "second", etc. are used in this application to describe various information, but this information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information. In addition, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. 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 this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0048] As described above, one or more implementation methods are provided in combination with specific contents, and the specific implementation of this application is not limited to these descriptions. Any similarity or similarity with the method, structure, etc. of this application, or some technical deductions or replacements made based on the concept of this application should be considered as the protection scope of this application.

Claims

1. A shield machine stable receiving device, comprising a steel sleeve (1), characterized in that: An inner push mechanism (2) is provided on the lower side of the steel sleeve (1), and the inner push mechanism (2) comprises an inner push body (21) and an inner roller (22) whose axis direction is perpendicular to the axial direction of the steel sleeve (1), and the inner roller (22) is provided on the inner push body (21) and protrudes from the steel sleeve. (1) an inner wall, so that the shield machine (10) can move on the inner roller (22) after entering the steel sleeve (1); The two inner push mechanisms (2) are arranged in a row and in an "eight" shape on the lower side of the steel sleeve (1), and the inner push mechanisms (2) are arranged in multiple rows along the axial direction of the steel sleeve (1), so that the left and right inner push mechanisms (2) in a row of inner push mechanisms (2) can be adjusted respectively, thereby adjusting the center position of the shield machine (10); the inner push body (21) comprises an inner push shell (211) and an inner push adjustment mechanism (212) arranged in the inner push shell (211) and capable of adjusting the distance of the inner roller (22) protruding from the inner wall of the steel sleeve (1); The shield machine stable receiving device also includes an external pushing mechanism (3) and a steel sleeve base (4), wherein two external pushing mechanisms (3) are provided and are respectively arranged below the internal pushing mechanism (2), wherein the external pushing mechanism (3) includes an external pushing body (31) and an external roller (32) whose axis direction is perpendicular to the axis of the steel sleeve (1), and the external roller (32) is arranged on the external pushing body (31) so that the steel sleeve (1) moves on the steel sleeve base (4) through the external roller (32); The outer push body (31) comprises an outer push shell (311) and an outer push adjustment mechanism (312) disposed in the outer push shell (311) and capable of adjusting the outer roller (32) to extend and retract downward, wherein the outer push adjustment mechanism (312) is capable of adjusting the steel sleeve (1) so that the steel sleeve (1) is adjusted to be aligned with the tunnel door of the construction well; The external push adjustment mechanism (312) comprises an external push threaded plate (3121) and an external push support frame (3122), the external push threaded plate (3121) is fixed to the external push shell (311), the upper end of the external push support frame (3122) is hinged with an external push shaft, the external roller (32) is rotatably sleeved on the external push shaft, and the lower end of the external push support frame (3122) is hinged with an external push screw (3124) that passes through the external push threaded plate (3121) and is threadedly connected to the external push threaded plate (3121); An external push slide groove (3111) is provided on the external push shell (311), and the external push support frame (3122) can be slidably embedded in the external push slide groove (3111); The outer push screw rod (3124) is rotated, and the outer push support frame (3122) slides along the outer push slide groove (3111) to drive the outer roller (32) to extend and retract downward.

2. The shield machine stable receiving device according to claim 1, characterized in that: A mud guard frame (23) is provided in the inner push shell (211), and the mud guard frame (23) is arranged around the circumference of the inner roller (22).

3. The shield machine stable receiving device according to claim 1, characterized in that: The inner push adjustment mechanism (212) comprises an inner push threaded plate (2121) and an inner push support frame (2122), wherein the inner push threaded plate (2121) is fixed to the inner push shell (211), an inner push rotating shaft is hingedly connected at the upper end of the inner push support frame (2122), the inner roller (22) is rotatably sleeved on the inner push rotating shaft, and an inner push screw (2124) is hingedly connected at the lower end of the inner push support frame (2122) which passes through the inner push threaded plate (2121) and is threadedly connected to the inner push threaded plate (2121); An inner push slide groove (2111) is provided on the inner push shell (211), and the inner push support frame (2122) can be slidably embedded in the inner push slide groove (2111); The inner push screw (2124) is rotated, and the inner push support frame (2122) slides along the inner push slide groove (2111), thereby driving the inner roller (22) to protrude or retract relative to the inner wall of the steel sleeve (1).

4. The shield machine stable receiving device according to claim 3, characterized in that: A grease injection channel (24) communicating with the threaded connection and the outside is provided in the inner push threaded plate (2121), and a sealing rubber valve is provided at the inlet of the grease injection channel (24).

5. The shield machine stable receiving device according to claim 1, characterized in that: The steel sleeve base (4) comprises a base (41) and two guide rails (42); the top of the base (41) is an arc-shaped surface; the two guide rails (42) are respectively arranged on both sides of the arc-shaped surface and correspond to the outer roller (32) so that the outer roller (32) travels on the guide rails (42).

6. The shield machine stable receiving device according to claim 5, characterized in that: The outer push shell (311) is provided with a downwardly protruding limit groove (33), and when the outer roller (32) moves on the guide rail (42), the limit groove (33) is clamped on both sides of the guide rail (42).

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