Shield tunneling machine dual-mode conversion construction technology

By adopting a dual-mode conversion construction process in the shield machine, including support, limit and suspension mechanism, the existing shield machine cannot meet different construction statuses and suspension needs, and efficient construction efficiency is achieved.

CN119435017APending Publication Date: 2025-02-14CCCC SECOND HIGHWAY ENG BUREAU RAILWAY CONSTR CO LTD
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Patent Information

Application Number
CN202411750932.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-02
Publication Date
2025-02-14

AI Technical Summary

Technical Problem

The existing shield machine cannot meet different construction status and suspension needs during construction, resulting in low actual construction efficiency.

Method used

A shield machine dual-mode conversion construction process is adopted, including support mechanism, limit mechanism and suspension mechanism. The support mechanism achieves stable support through protective outer frame, inner and outer driving gears and positioning components; the limiting mechanism ensures structural stability through the limiting inner ring, inner rotating ring and limiting components; the suspension mechanism uses the limiting outer ring and outer rotating ring and hanging blocks to achieve multi-angle suspension.

Benefits of technology

It realizes stable support and efficient suspension of shield machines under different construction conditions and suspension needs, and improves construction efficiency.

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Abstract

The invention relates to the technical field of tunnel construction equipment, in particular to a shield tunneling machine dual-mode conversion construction technology which comprises a supporting mechanism, the supporting mechanism comprises a protective outer frame, an inner driving gear, an outer driving gear and a positioning component, a clamping block is fixedly connected to the inner surface wall of one side of the protective outer frame, and a first supporting strip is fixedly connected to the outer surface of one side of the protective outer frame; the outer surface of one side of the first supporting strip is rotationally connected with a first supporting shaft, the outer surface of the first supporting shaft is sleeved with the inner driving gear, and the outer surface of one side of the protective outer frame is fixedly connected with a second supporting strip. During use, the opening of the protective outer frame is placed downwards, then the protective outer frame can be conveniently arranged at the to-be-used supporting position in a sleeving mode, at the moment, the number of the extension rods is increased or decreased, then splicing treatment of the multiple extension rods can be conducted through the connecting threaded holes and the connecting rods, and then the spliced extension rods are rotated and adjusted; and the spliced extension rods are matched with the connecting rods and the clamping rings and can be tightly attached to the outer surface of a to-be-used supporting position.
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Description

Technical Field

[0001] The invention belongs to the technical field of tunnel construction equipment, and specifically relates to a dual-mode conversion construction process for a shield machine. Background Art

[0002] A shield machine is a tunnel boring machine that uses the shield method. It is a cylindrical steel component that excavates the soil while advancing forward along the axis of the tunnel. The shell of the cylindrical component is the shield, which serves as a temporary support for the excavated tunnel section that has not yet been lined, bearing the pressure of the surrounding soil layers and sometimes the groundwater pressure as well as keeping the groundwater out. Excavation, soil discharge, lining and other operations are carried out under the cover of the shield.

[0003] However, in the prior art, the existing shield machine needs to switch its own state during the construction process to meet different construction conditions. Since the existing shield machine has a fixed structure and function, it cannot meet all temporary construction needs. At the same time, since the internal supporting structure conditions of the existing shield machine are different, and the use conditions of the existing suspension equipment are fixed, it cannot meet different suspension needs, which leads to poor actual use effect of the existing suspension equipment. Summary of the invention

[0004] The purpose of the present invention is to provide a shield machine dual-mode conversion construction process that can meet different construction suspension requirements and improve actual construction efficiency.

[0005] The technical solution adopted by the present invention is as follows: A shield machine dual-mode conversion construction process, comprising: a support mechanism, the support mechanism comprising a protective outer frame, an inner drive gear, an outer drive gear and a positioning component, a clamping block is fixedly connected to the inner surface wall of one side of the protective outer frame, a first support bar is fixedly connected to the outer surface of one side of the protective outer frame, a first support shaft is rotatably connected to the outer surface of one side of the first support bar, the inner drive gear is sleeved on the outer surface of the first support shaft, a second support bar is fixedly connected to the outer surface of one side of the protective outer frame, a second support shaft is rotatably connected to the outer surface of one side of the second support bar, the outer drive gear is sleeved on the outer surface of the second support shaft, and the positioning component is arranged on the protective outer frame;

[0006] A limiting mechanism, the limiting mechanism comprising a limiting inner ring, an inner rotating gear ring and a limiting component, the limiting inner ring is slidably inserted in the protective outer frame, the inner rotating gear ring is fixedly connected to an outer surface of one side of the limiting inner ring, and the limiting component is arranged on the limiting inner ring; and

[0007] The suspension mechanism includes a limiting outer ring, an outer rotating gear ring and a hanging block. The limiting outer ring is slidably sleeved on the outer surface of the protective outer frame. The outer rotating gear ring is fixedly connected to the outer surface of one side of the limiting outer ring. There are a plurality of hanging blocks, and each of the hanging blocks is fixedly connected to the outer surface of the outer rotating gear ring at an equidistant distance.

[0008] Wherein, the inner surface wall of the protective outer frame is fixedly connected with positioning side strips near the edges on both sides, and the outer surface of one side of the protective outer frame is fixedly connected with a positioning outer ring.

[0009] Wherein, two groups of mounting blocks are fixedly connected to the outer surface of one side of the protective outer frame, and each group of mounting blocks is provided with two in total.

[0010] Wherein, a mounting hole is opened on the inner bottom surface of the protective outer frame, and a first positioning tube is embedded in the mounting hole.

[0011] Among them, the outer surface of one side of the limiting inner ring is in contact with the outer surface of one side of the clamping block, and the outer surface of one side of the inner rotating gear ring is in contact with the outer surface of the other side of the clamping block.

[0012] Wherein, each of the outer surfaces of both sides of the hanging block is provided with a clamping hole, each of the outer surfaces of the hanging block is provided with a clamping groove, and each of the clamping grooves is connected to the inside of the corresponding clamping hole.

[0013] Among them, the positioning component includes an inner limiting worm wheel, an inner limiting worm, an outer limiting worm wheel and an outer limiting worm, the inner limiting worm wheel is sleeved on the outer surface of the first support shaft, the inner limiting worm is rotatably connected between the relative outer surfaces of the two corresponding mounting blocks, the inner limiting worm and the inner limiting worm wheel are meshed, the outer limiting worm wheel is sleeved on the outer surface of the second support shaft, the outer limiting worm is rotatably connected between the relative outer surfaces of the two corresponding mounting blocks, and the outer limiting worm and the outer limiting worm wheel are meshed.

[0014] Among them, there are three groups of limiting components in total, each group of limiting components includes a second positioning tube, an extension rod, a connecting rod and a clamping ring, the second positioning tube is fixedly connected to the outer surface of one side of the limiting inner ring, the extension rod is threadedly connected to the corresponding second positioning tube, a connecting threaded hole is opened at the bottom end of the extension rod, the connecting rod is fixedly connected to one end of the corresponding extension rod, and the clamping ring is threadedly connected to the outer surface of the corresponding connecting rod.

[0015] The inner rotating gear ring is meshed with the inner driving gear, and the outer rotating gear ring is meshed with the outer driving gear.

[0016] A method for using a shield machine dual-mode conversion construction process comprises the following steps:

[0017] S1. Position fixation: Place the opening of the protective outer frame downward, so that the protective outer frame can be conveniently placed on the support position to be used. At this time, by adding or reducing extension rods, multiple extension rods can be spliced ​​by connecting threaded holes and connecting rods, and then the spliced ​​extension rods can be adjusted by rotation, so that the spliced ​​extension rods, connecting rods and clamping rings can be close to the outer surface of the support position to be used, so that the support mechanism can be more stably set at the support position to be used, and then the inner limit worm is rotated, so that the inner limit worm and the inner limit worm wheel can drive the first support shaft to rotate, and then The rotating first support shaft can drive the inner driving gear to rotate, so that the rotating inner driving gear can rotate the use angle of the protective outer frame under the position limit of the inner rotating gear ring, so that the protective outer frame can cooperate with the limiting inner ring to form a closed annular structure. At this time, the extension rod is connected to the inside of the first positioning tube by adding or removing the extension rod, and the spliced ​​extension rod is adjusted by rotation, so that the spliced ​​extension rod can be closely fitted with the outer surface of the support position to be used, so that the equipment can be stably set at the support position to be used. At this time, a stable temporary suspension effect can be achieved by using the hanging block in combination with the existing connecting rope;

[0018] S2. Rotation adjustment: by rotating the outer limit worm, the rotating outer limit worm cooperates with the outer limit worm wheel to drive the second support shaft to rotate, and the rotating second support shaft can drive the outer drive gear to rotate, and then the rotating outer drive gear can drive the outer rotating gear ring to rotate, and then the rotating outer rotating gear ring can adjust the suspension point through the hanging block, so as to meet the suspension requirements of different angles. At the same time, according to the actual suspension requirements, the rotation of the suspension point can be adjusted by controlling the rotating outer limit worm.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0020] (1) In the present invention, when in use, the opening of the protective outer frame is placed downward, so that the protective outer frame can be conveniently sleeved on the support position to be used. At this time, by adding or reducing extension rods, multiple extension rods can be spliced ​​by connecting threaded holes and connecting rods, and then the spliced ​​extension rods are adjusted by rotation so that the spliced ​​extension rods, the connecting rods and the clamping rings can be tightly attached to the outer surface of the support position to be used, so that the support mechanism can be more stably set at the support position to be used, and then the inner limit worm is rotated, so that the inner limit worm and the inner limit worm wheel can drive the first support shaft to rotate. Thereby, the rotating first support shaft can drive the inner driving gear to rotate, so that the rotating inner driving gear can rotate at the use angle of the protective outer frame under the position limit of the inner rotating gear ring, so that the protective outer frame can cooperate with the limiting inner ring to form a closed ring structure. At this time, the extension rods are connected to the inside of the first positioning tube by adding or removing them, and then the spliced ​​extension rods are adjusted by rotation, so that the spliced ​​extension rods can fit tightly with the outer surface of the support position to be used, so that the equipment can be stably set at the support position to be used. At this time, a stable temporary suspension effect can be achieved by using the hanging block in combination with the existing connecting rope.

[0021] (2) In the present invention, when in use, by rotating the outer limit worm, the rotating outer limit worm cooperates with the outer limit worm wheel to drive the second support shaft to rotate, and the rotating second support shaft can drive the outer drive gear to rotate, and then the rotating outer drive gear can drive the outer rotating ring gear to rotate, and then the rotating outer rotating ring gear can adjust the suspension point through the hanging block, so as to meet the suspension requirements of different angles. At the same time, according to the actual suspension requirements, the rotation of the suspension point can be adjusted by controlling the rotating outer limit worm, so that the suspension point can be conveniently and continuously adjusted without replacement, so that the equipment can efficiently realize its functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional diagram of the present invention when in use;

[0023] Figure 2 It is a first perspective stereogram of the present invention;

[0024] Figure 3 It is a second viewing angle stereogram of the present invention;

[0025] Figure 4 It is a cutaway stereogram of the present invention from a first viewing angle;

[0026] Figure 5 A first-view stereoscopic view of the support mechanism of the present invention;

[0027] Figure 6 This is a perspective view of the support mechanism of the present invention from a second viewing angle;

[0028] Figure 7 This is a three-dimensional diagram of the limiting mechanism of the present invention from a first viewing angle;

[0029] Figure 8 This is a perspective view of the limiting mechanism of the present invention from a second viewing angle;

[0030] Fig. 9 It is a three-dimensional diagram of the suspension mechanism of the present invention.

[0031] Markings in the figure: 1. Support mechanism; 101. Protective outer frame; 102. Positioning side strip; 103. First positioning tube; 104. Positioning outer ring; 105. Inner drive gear; 106. Inner limit worm wheel; 107. Inner limit worm; 108. Outer drive gear; 109. Outer limit worm wheel; 110. Outer limit worm; 111. Block; 2. Limiting mechanism; 201. Limiting inner ring; 202. Inner rotating gear ring; 203. Second positioning tube; 204. Extension rod; 205. Connecting rod; 206. Block; 3. Suspension mechanism; 301. Limiting outer ring; 302. Outer rotating gear ring; 303. Hanging block. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention 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 invention and are not used to limit the present invention.

[0033] For example, please refer to Figure 1-Figure 4 A shield machine dual-mode conversion construction process is composed of a supporting mechanism 1, a limiting mechanism 2 and a hanging mechanism 3.

[0034] The details are as follows:

[0035] See also Figure 5 and Figure 6The support mechanism 1 includes a protective outer frame 101, an inner driving gear 105, an outer driving gear 108 and a positioning component. A clamping block 111 is fixedly connected to the inner surface wall of one side of the protective outer frame 101, a first supporting bar is fixedly connected to the outer surface of one side of the protective outer frame 101, and a first supporting shaft is rotatably connected to the outer surface of one side of the first supporting bar. The inner driving gear 105 is sleeved on the outer surface of the first supporting shaft, a second supporting bar is fixedly connected to the outer surface of one side of the protective outer frame 101, and a second supporting shaft is rotatably connected to the outer surface of one side of the second supporting bar. The outer driving gear 108 is sleeved on the outer surface of the second supporting shaft. The positioning component is arranged on the protective outer frame 101, and the inner surface wall of the protective outer frame 101 is fixedly connected to the positioning side strips 102 near the edges on both sides, and a positioning outer ring 104 is fixedly connected to the outer surface of one side of the protective outer frame 101. Two sets of mounting blocks are fixedly connected to the outer surface of one side of the protective outer frame 101, and each set of mounting blocks is provided with two sets. A mounting hole is provided on the inner bottom surface of the protective outer frame 101, and a first positioning tube 103 is embedded in the mounting hole. The positioning component includes an inner limiting worm wheel 106, an inner limiting worm 107, an outer limiting worm wheel 109 and an outer limiting worm 110. The inner limiting worm wheel 106 is sleeved on the outer surface of the first support shaft, and the inner limiting worm 107 is rotatably connected between the corresponding outer surfaces of the two mounting blocks. The inner limiting worm 107 is meshed with the inner limiting worm wheel 106, and the outer limiting worm wheel 109 is sleeved on the outer surface of the second support shaft. The outer limiting worm 110 is rotatably connected between the corresponding outer surfaces of the two mounting blocks. 10 is meshed with the outer limiting worm gear 109, and the inner limiting worm 107 is rotated, so that the inner limiting worm 107 cooperates with the inner limiting worm gear 106 to drive the first support shaft to rotate, and then the rotating first support shaft can drive the inner driving gear 105 to rotate, so that the rotating inner driving gear 105 can rotate the use angle of the protective outer frame 101 under the position limit of the inner rotating gear ring 202, and then the protective outer frame 101 cooperates with the limiting inner ring 201 to form a closed annular structure;

[0036] See also Figure 7 and Figure 8The limiting mechanism 2 includes a limiting inner ring 201, an inner rotating gear ring 202 and a limiting component. The limiting inner ring 201 is slidably inserted in the protective outer frame 101, and the inner rotating gear ring 202 is fixedly connected to the outer surface of one side of the limiting inner ring 201. The limiting component is arranged on the limiting inner ring 201. The outer surface of one side of the limiting inner ring 201 is in contact with the outer surface of one side of the block 111, and the outer surface of one side of the inner rotating gear ring 202 is in contact with the outer surface of the other side of the block 111. The limiting component There are three groups of limit components, each group of limit components includes a second positioning tube 203, an extension rod 204, a connecting rod 205 and a clamping ring 206. The second positioning tube 203 is fixedly connected to the outer surface of one side of the limit inner ring 201, the extension rod 204 is threadedly connected to the corresponding inside of the second positioning tube 203, a connecting threaded hole is opened at the bottom end of the extension rod 204, the connecting rod 205 is fixedly connected to one end of the corresponding extension rod 204, and the clamping ring 206 is threadedly connected to the corresponding connecting rod 20 5 outer surface, place the opening of the protective outer frame 101 downward, and then the protective outer frame 101 can be conveniently sleeved on the support position to be used. At this time, by adding or reducing the extension rods 204, multiple extension rods 204 can be spliced ​​by connecting the threaded holes and the connecting rods 205, and then by rotating and adjusting the spliced ​​extension rods 204, the spliced ​​extension rods 204 can be matched with the connecting rods 205 and the clamping ring 206 to be close to the outer surface of the support position to be used, so that the support mechanism 1 can be more stably set at the support position to be used, and by adding or reducing the extension rods 204, it is connected to the inside of the first positioning tube 103, and then by rotating and adjusting the spliced ​​extension rods 204, the spliced ​​extension rods 204 can be closely fitted with the outer surface of the support position to be used, so that the equipment can be stably set at the support position to be used. At this time, the hanging block 303 can be used in conjunction with the existing connecting rope to achieve a stable temporary suspension effect;

[0037] See also Fig. 9The suspension mechanism 3 includes a limiting outer ring 301, an outer rotating gear ring 302 and a hanging block 303. The limiting outer ring 301 is slidably sleeved on the outer surface of the protective outer frame 101. The outer rotating gear ring 302 is fixedly connected to the outer surface of one side of the limiting outer ring 301. A plurality of hanging blocks 303 are provided, each of which is fixedly connected to the outer surface of the outer rotating gear ring 302 at an equal distance. A clamping hole is provided on the outer surface of both sides of each hanging block 303. A clamping groove is provided on the outer surface of each hanging block 303. Each clamping groove is connected to the inside of the corresponding clamping hole. The inner rotating gear ring 202 is meshed with the inner driving gear 105, and the outer rotating gear ring 302 is meshed with the outer driving gear 108. By rotating the external limit worm 110, the rotating external limit worm 110 cooperates with the external limit worm wheel 109 to drive the second support shaft to rotate, and the rotating second support shaft can drive the external drive gear 108 to rotate, and then the rotating external drive gear 108 can drive the external rotating ring gear 302 to rotate, and then the rotating external rotating ring gear 302 can rotate to adjust the suspension point through the hanging block 303, so as to meet the suspension requirements at different angles. At the same time, according to the actual suspension requirements, the rotation of the suspension point can be adjusted by controlling the rotating external limit worm 110, so that the suspension point can be conveniently and continuously adjusted without replacement.

[0038] The following is a detailed description of a method for using a shield machine dual-mode conversion construction process provided by an embodiment of the present invention, and the method for using the shield machine dual-mode conversion construction process includes the following steps:

[0039] Step 1, position fixing: place the opening of the protective outer frame 101 downward, so that the protective outer frame 101 can be conveniently sleeved on the support position to be used. At this time, by adding or reducing the extension rods 204, and then by connecting the threaded holes and the connecting rods 205, multiple extension rods 204 can be spliced, and then by rotating and adjusting the spliced ​​extension rods 204, the spliced ​​extension rods 204 can cooperate with the connecting rods 205 and the clamping ring 206 to be close to the outer surface of the support position to be used, so that the support mechanism 1 can be more stably set at the support position to be used, and then by rotating the inner limit worm 107, the inner limit worm 107 and the inner limit worm wheel 106 can drive the first support shaft to rotate. Then, the rotating first support shaft can drive the inner driving gear 105 to rotate, so that the rotating inner driving gear 105 can rotate the use angle of the protective outer frame 101 under the position limit of the inner rotating gear ring 202, so that the protective outer frame 101 can cooperate with the limiting inner ring 201 to form a closed annular structure. At this time, the extension rods 204 are connected to the inside of the first positioning tube 103 by adding or reducing them, and the spliced ​​extension rods 204 are then adjusted by rotation, so that the spliced ​​extension rods 204 can be closely fitted with the outer surface of the support position to be used, so that the equipment can be stably set at the support position to be used. At this time, the hanging block 303 can cooperate with the existing connecting rope to achieve a stable temporary suspension effect;

[0040] Step 2, rotation adjustment: by rotating the outer limit worm 110, the rotating outer limit worm 110 cooperates with the outer limit worm wheel 109 to drive the second support shaft to rotate, and the rotating second support shaft can drive the outer drive gear 108 to rotate, and then the rotating outer drive gear 108 can drive the outer rotating ring gear 302 to rotate, and then the rotating outer rotating ring gear 302 can rotate to adjust the suspension point through the hanging block 303, so as to meet the suspension requirements of different angles. At the same time, according to the actual suspension requirements, the rotation of the suspension point can be adjusted by controlling the rotating outer limit worm 110, so that the suspension point can be conveniently and continuously adjusted without replacement, so that the equipment can efficiently realize its functions.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A shield machine dual-mode conversion construction process, characterized in that: include: A support mechanism (1), the support mechanism (1) comprising a protective outer frame (101), an inner drive gear (105), an outer drive gear (108) and a positioning component, the inner surface wall of one side of the protective outer frame (101) is fixedly connected to a clamping block (111), the outer surface of one side of the protective outer frame (101) is fixedly connected to a first support bar, the outer surface of one side of the first support bar is rotatably connected to a first support shaft, the inner drive gear (105) is sleeved on the outer surface of the first support shaft, the outer surface of one side of the protective outer frame (101) is fixedly connected to a second support bar, the outer surface of one side of the second support bar is rotatably connected to a second support shaft, the outer drive gear (108) is sleeved on the outer surface of the second support shaft, and the positioning component is arranged on the protective outer frame (101); A limiting mechanism (2), the limiting mechanism (2) comprising a limiting inner ring (201), an inner rotating gear ring (202) and a limiting component, the limiting inner ring (201) being slidably inserted into the interior of the protective outer frame (101), the inner rotating gear ring (202) being fixedly connected to an outer surface of one side of the limiting inner ring (201), and the limiting component being arranged on the limiting inner ring (201); and A suspension mechanism (3), the suspension mechanism (3) comprising a limiting outer ring (301), an outer rotating gear ring (302) and a hanging block (303), the limiting outer ring (301) being slidably sleeved on the outer surface of the protective outer frame (101), the outer rotating gear ring (302) being fixedly connected to the outer surface of one side of the limiting outer ring (301), a plurality of hanging blocks (303) being provided, and each of the hanging blocks (303) being fixedly connected to the outer surface of the outer rotating gear ring (302) at an equidistant distance.

2. A shield machine dual-mode conversion construction process as claimed in claim 1, characterized in that: Positioning side strips (102) are fixedly connected to the inner surface wall of the protective outer frame (101) near the edges on both sides, and a positioning outer ring (104) is fixedly connected to the outer surface of one side of the protective outer frame (101).

3. A shield machine dual-mode conversion construction process as claimed in claim 2, characterized in that: Two groups of mounting blocks are fixedly connected to the outer surface of one side of the protective outer frame (101), and each group of mounting blocks is provided with two in total.

4. A shield machine dual-mode conversion construction process as claimed in claim 3, characterized in that: The inner bottom surface of the protective outer frame (101) is provided with a mounting hole, and a first positioning tube (103) is embedded in the mounting hole.

5. A shield machine dual-mode conversion construction process as claimed in claim 4, characterized in that: The outer surface of one side of the limiting inner ring (201) is in contact with the outer surface of one side of the clamping block (111), and the outer surface of one side of the inner rotating gear ring (202) is in contact with the outer surface of the other side of the clamping block (111).

6. A shield machine dual-mode conversion construction process as claimed in claim 5, characterized in that: Each of the hanging blocks (303) has a clamping hole on its two side outer surfaces, each of the hanging blocks (303) has a clamping slot on its outer surface, and each of the clamping slots is connected to the inside of the corresponding clamping hole.

7. A shield machine dual-mode conversion construction process as claimed in claim 6, characterized in that: The positioning component comprises an inner limiting worm wheel (106), an inner limiting worm (107), an outer limiting worm wheel (109) and an outer limiting worm (110); the inner limiting worm wheel (106) is sleeved on the outer surface of the first support shaft; the inner limiting worm (107) is rotatably connected between the corresponding outer surfaces of the two mounting blocks; the inner limiting worm (107) and the inner limiting worm wheel (106) are meshed; the outer limiting worm wheel (109) is sleeved on the outer surface of the second support shaft; the outer limiting worm (110) is rotatably connected between the corresponding outer surfaces of the two mounting blocks; the outer limiting worm (110) and the outer limiting worm wheel (109) are meshed.

8. A shield machine dual-mode conversion construction process as claimed in claim 7, characterized in that: The limiting components are provided in three groups in total, and each group of the limiting components comprises a second positioning tube (203), an extension rod (204), a connecting rod (205) and a clamping ring (206); the second positioning tube (203) is fixedly connected to the outer surface of one side of the limiting inner ring (201); the extension rod (204) is threadedly connected to the inside of the corresponding second positioning tube (203); a connecting threaded hole is provided at the bottom end of the extension rod (204); the connecting rod (205) is fixedly connected to one end of the corresponding extension rod (204); and the clamping ring (206) is threadedly connected to the outer surface of the corresponding connecting rod (205).

9. A shield machine dual-mode conversion construction process as claimed in claim 8, characterized in that: The inner rotating gear ring (202) is meshed with the inner driving gear (105), and the outer rotating gear ring (302) is meshed with the outer driving gear (108).

10. A method for using a shield machine dual-mode conversion construction process, characterized in that: The dual-mode conversion construction process for a shield machine as described in claim 9 comprises the following steps: S1. Position fixing: the opening of the protective outer frame (101) is placed downward, so that the protective outer frame (101) can be conveniently placed on the support position to be used. At this time, by increasing or decreasing the extension rods (204), multiple extension rods (204) can be spliced ​​by connecting the threaded holes and the connecting rods (205). Then, by rotating and adjusting the spliced ​​extension rods (204), the spliced ​​extension rods (204) can be closely attached to the outer surface of the support position to be used in conjunction with the connecting rods (205) and the clamping ring (206), so that the support mechanism (1) can be relatively stably arranged at the support position to be used, and then by rotating the inner limit worm (107), the inner limit worm (107) can cooperate with the inner limit worm wheel (106) to drive the first support shaft to rotate. The rotating first support shaft can drive the inner driving gear (105) to rotate, so that the rotating inner driving gear (105) can rotate under the position limit of the inner rotating gear ring (202), so that the use angle of the protective outer frame (101) can rotate, so that the protective outer frame (101) can cooperate with the limiting inner ring (201) to form a closed annular structure. At this time, the extension rod (204) is connected to the inside of the first positioning tube (103) by adding or reducing the extension rod (204), and then the spliced ​​extension rod (204) is adjusted by rotation, so that the spliced ​​extension rod (204) can be closely fitted with the outer surface of the support position to be used, so that the equipment can be stably set at the support position to be used. At this time, the hanging block (303) can cooperate with the existing connecting rope to achieve a stable temporary suspension effect; S2. Rotation adjustment: By rotating the outer limiting worm (110), the rotating outer limiting worm (110) cooperates with the outer limiting worm wheel (109) to drive the second support shaft to rotate, and the rotating second support shaft can drive the outer driving gear (108) to rotate, and then the rotating outer driving gear (108) can drive the outer rotating ring gear (302) to rotate, and then the rotating outer rotating ring gear (302) can be rotated to adjust the suspension point through the hanging block (303), so as to meet the suspension requirements at different angles. At the same time, according to the actual suspension requirements, the rotation of the suspension point can be adjusted by controlling the rotating outer limiting worm (110).