A rotatable inner support device suitable for mechanical method of connecting channel construction

Abstract

The application provides a rotatable inner support device suitable for mechanical method connection channel construction, which comprises an arc-shaped base, a driving device, a support rotating device, a gear transmission device and an angle measuring device, the gear transmission device is connected with the support rotating device through a gear shaft, the driving device arranged on the arc-shaped base drives the gear transmission device to rotate, thereby driving the support rotating device to rotate, the support rotating device is used for driving the rotating support arranged thereon to rotate, thereby being attached to the connection channel segment, and the angle measuring device is arranged on the support rotating device; the device drives the gear transmission device to rotate through the driving device, the gear transmission device is connected with the support rotating device through the gear shaft, thereby driving the support rotating device to rotate in the horizontal direction, the support rotating device can rotate, and then the segment and the support rotating device can be effectively attached, so that the support effect is enhanced, and the angle measuring device is arranged to measure the rotating angle, so as to ensure the construction quality.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a rotatable internal support device suitable for mechanical connection tunnel construction. Background Technology

[0002] With rapid economic development, urban subway construction has risen to a more important level. Tunnel boring machine (TBM) construction, unaffected by seasonal or climatic conditions, highly mechanized, remotely controlled and intelligently constructed, offers advantages such as fast construction speed, low personnel requirements, and minimal environmental impact from deep excavations. As a result, it is increasingly used, effectively alleviating the pressure on current urban traffic. Connecting passages are typically located between two tunnels, serving functions such as connection, drainage, and fire evacuation. Currently, connecting passages are mostly constructed using tunnel freezing methods and mining methods, but these methods have unavoidable drawbacks. Using mechanical methods to excavate connecting passages will greatly improve construction efficiency and reduce adverse environmental impacts.

[0003] Currently, the segment support plates used in mechanical excavation of connecting tunnels are mostly steel frame arch structures with rigid connections between adjacent support plates. When facing tracks with certain angles, the support plates cannot rotate at a certain angle, resulting in the segments and support plates not fitting together effectively, weakening the supporting effect of the support plates, and thus adversely affecting the project. Summary of the Invention

[0004] To address the aforementioned problems with existing technologies, this invention provides a rotatable inner support plate suitable for mechanical connection tunnel construction.

[0005] To achieve the above objectives, this invention proposes a rotatable internal support device suitable for mechanical connection tunnel construction, comprising: an arc-shaped base, a drive device, a support rotation device, a gear transmission device, and an angle measuring device. The drive device is mounted on the arc-shaped base, and the gear transmission device is connected to the support rotation device via a gear shaft. The drive device drives the gear transmission device to rotate, and the rotation of the gear transmission device drives the support rotation device to rotate. The support rotation device is used to drive the rotating support member mounted thereon to rotate so as to fit against the tunnel segment. The angle measuring device is mounted on the support rotation device.

[0006] As an optional implementation, in the rotatable internal support device for mechanical connection tunnel construction provided by the present invention, the support rotation device further includes a fixed support member and a rotating frame. The rotating support member and the fixed support member are arranged opposite to each other and are hinged to the rotating frame by a fixing pin. The rotating frame is connected to the gear shaft, and the gear shaft can drive the rotating frame to rotate. The fixed support member is connected to the arc-shaped base by a support column. Both the rotating support member and the fixed support member are connected to the arc-shaped base by support columns. The rotating support member is provided with an arc-shaped groove that cooperates with the support column.

[0007] As an optional implementation, in the rotatable internal support device for mechanical connection tunnel construction provided by the present invention, the rotating support includes two symmetrically arranged first support blocks, each of which is equipped with a pressure sensor, and the two first support blocks are connected by the rotating frame; the fixed support includes two symmetrically arranged second support blocks, and the two second support blocks are respectively connected to the arc-shaped base through the support column.

[0008] As an optional implementation, in the rotatable internal support device for mechanical connection channel construction provided by the present invention, each first support block is provided with two mounting ears on its side, each second support block is provided with a connecting pin, the end of the connecting pin is provided with a hanging ear, the hanging ear is installed in conjunction with the two mounting ears, and the mounting ears and the hanging ears are hinged to the bracket at the end of the rotating frame through the fixing pin.

[0009] As an optional implementation, in the rotatable internal support device for mechanical connection tunnel construction provided by the present invention, the gear transmission device includes a transmission component and a steering component; the transmission component is drivenly connected to the steering component, and the steering component is drivenly connected to the gear shaft.

[0010] As an optional implementation, in the rotatable internal support device for mechanical connection tunnel construction provided by the present invention, the transmission assembly includes a driving wheel and a driven wheel that mesh with each other. The driving wheel is connected to the output shaft of the drive device, and the driven wheel is connected to a fixed shaft provided on the drive device. An isolation plate is provided between the driven wheel and the fixed shaft.

[0011] As an optional implementation, in the rotatable internal support device for mechanical connection tunnel construction provided by the present invention, the steering assembly includes an arc-shaped fixing box, a first steering wheel, and a second steering wheel; the arc-shaped fixing box is connected to the protective shell via a support leg, the second steering wheel is provided in the receiving cavity of the arc-shaped fixing box, the second steering wheel is connected to the first steering wheel via a connecting shaft and rotates synchronously, the first steering wheel meshes with the driving wheel or the driven wheel, and the second steering wheel meshes with the gear shaft for transmission.

[0012] As an optional implementation, in the rotatable internal support device for mechanical connection channel construction provided by the present invention, the steering component further includes locking teeth, which are disposed in the arc-shaped fixing box and close to the gear shaft, and are used to cooperate with the gear shaft.

[0013] As an optional implementation, in the rotatable internal support device for mechanical connection tunnel construction provided by the present invention, the gear transmission device further includes a traction assembly. The traction assembly includes a traction ring, a traction shaft, a horizontal traction fixing part, and a jack. The arc-shaped fixing box has a sliding groove for the connecting shaft to pass through. The traction ring is sleeved on the top of the connecting shaft to drive the connecting shaft to move within the sliding groove. The traction shaft is connected to the traction ring and has a horizontal traction fixing part. The jack is located at the end of the traction shaft away from the traction ring. The jack drives the traction ring and the traction shaft to perform linear reciprocating motion.

[0014] As an optional implementation, in the rotatable internal support device for mechanical connection tunnel construction provided by the present invention, the angle measuring device includes a coil, a conductive distance measuring strip in contact with the coil, a power switch, a power plate, and a voltmeter. The power switch is fixed to the bottom of the second support block by a fixing member.

[0015] Compared with the prior art, the beneficial effects of the technical solution of the present invention are as follows: The rotatable internal support device for mechanical connection tunnel construction provided by the present invention, by setting up a gear transmission device, an angle measuring device, and a support rotation device, drives the gear transmission device to rotate by controlling the drive device. The gear transmission device is connected to the support rotation device through a gear shaft, thereby driving the support rotation device to rotate in the horizontal direction. In the case of the track with corners, the support rotation device can rotate, thereby enabling the tunnel segment and the support rotation device to fit effectively, thereby enhancing the support function of the support rotation device and improving the project quality. By setting up an angle measuring device to obtain the rotation angle, the construction quality is guaranteed. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the rotatable internal support device for mechanical connection tunnel construction provided by the present invention;

[0018] Figure 2 A front view schematic diagram of a rotatable internal support device suitable for mechanical connection tunnel construction provided by the present invention.

[0019] Figure 3 for Figure 2 Top view of the cross section at point AA;

[0020] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0021] Figure 5 A schematic diagram of the transmission assembly of a rotatable internal support device suitable for mechanical connection tunnel construction provided by the present invention;

[0022] Figure 6 A left-side schematic diagram of the transmission assembly of a rotatable internal support device suitable for mechanical connection tunnel construction provided by the present invention;

[0023] Figure 7 A schematic diagram of the orientation assembly of a rotatable internal support device suitable for mechanical method connection tunnel construction provided by the present invention;

[0024] Figure 8 This is a structural schematic diagram of the arc-shaped fixing box;

[0025] Figure 9 This is a schematic diagram of the locking teeth structure;

[0026] Figure 10 This is a schematic diagram of the gear shaft structure;

[0027] Figure 11 This is a left-side view of the gear shaft;

[0028] Figure 12 This is a structural diagram of the fixing pin;

[0029] Figure 13 A schematic diagram of the structure connecting the pin and the angle measuring device;

[0030] Figure 14This is a schematic diagram of the circuit board structure;

[0031] Figure 15 This is a front view schematic diagram of the orientation component;

[0032] Figure 16 for Figure 15 Top view of the cross-section at point CC;

[0033] Figure 17 This is a top view schematic diagram of the gear transmission device.

[0034] Figure 18 A schematic diagram of the structure of the rotatable internal support device for mechanical connection tunnel construction provided by the present invention at a certain moment during its rotation.

[0035] Figure 19 A top view of the structure of the rotatable internal support device for mechanical connection tunnel construction provided by the present invention at a certain moment during its rotation.

[0036] Figure 20 This is a schematic diagram of the installation location of the angle measuring device.

[0037] [Explanation of Labels in the Attached Image]

[0038] 1. Curved base;

[0039] 2. Drive unit;

[0040] 3. Supporting rotation device; 31. Rotating support component; 311. First support block; 312. Pressure sensor; 313. Mounting ear;

[0041] 32. Fixed support component; 321. Second support block; 322. Connecting pin; 323. Hanging lug;

[0042] 33. Rotating frame; 34. Fixing pin; 35. Arc-shaped groove;

[0043] 4. Gear transmission device; 41. Transmission assembly; 411. Driving gear; 412. Driven gear; 413. Fixed shaft; 414. Isolation plate;

[0044] 42. Orientation assembly; 421. Arc-shaped fixing box; 422. Support leg; 423. First orientation wheel; 424. Second orientation wheel; 425. Connecting shaft; 426. Locking gear;

[0045] 43. Traction assembly; 431. Traction ring; 432. Traction shaft; 433. Horizontal traction fixing part; 434. Jack; 435. Sliding groove;

[0046] 5. Angle measuring device; 51. Coil; 52. Conductive distance measuring strip; 53. Power switch; 54. Power board; 55. Voltmeter; 56. Fixture;

[0047] 6. Gear shaft; 61. First gear; 62. Second gear; 7. Output shaft. Detailed Implementation

[0048] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0049] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0050] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0051] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0052] This invention provides a rotatable internal support device suitable for mechanical construction of connecting passages, such as... Figures 1-4As shown, it includes an arc-shaped base 1, a drive device 2, a support rotation device 3, a gear transmission device 4, and an angle measuring device 5. The drive device 2 is mounted on the arc-shaped base 1 and drives the gear transmission device 4 to rotate. The gear transmission device 4 is connected to the support rotation device 3 via a gear shaft 6. The rotation of the gear transmission device 4 drives the support rotation device 3 to rotate. The support rotation device 3 drives the rotating support member 31 mounted on it to rotate so as to fit against the connecting channel segment. The angle measuring device 5 is mounted on the support rotation device 3. The drive device 2 is surrounded by a protective cover. The drive device can be a motor, a diesel power output device, a hydraulic power output device, or other power structures. This invention uses a motor drive. The output shaft 7 extending from inside the motor is connected to the driving wheel 411. The driven wheel 412 meshes with the driving wheel 411 and is fixed on the protective cover of the drive device 2.

[0053] The present invention provides a rotatable internal support device suitable for mechanical connection tunnel construction. It comprises a gear transmission device 4, an angle measuring device 5, and a support rotation device 3. The gear transmission device 4 is driven to rotate by a control drive device. The gear transmission device 4 is connected to the support rotation device 3 via a gear shaft 6, thereby causing the support rotation device 3 to rotate horizontally. In sections with corners, the support rotation device 3 can rotate, allowing the tunnel lining segments to effectively fit against the support rotation device 3, enhancing its supporting function and improving project quality. The angle measuring device 5 is used to obtain the rotation angle, ensuring construction quality.

[0054] Furthermore, the supporting rotation device 3 also includes a fixed support member 32 and a rotating frame 33. The rotating support member 31 and the fixed support member 32 are arranged opposite to each other and are hinged to the rotating frame 33 by a fixing pin 34. The fixing pin 34 is as follows: Figure 12 As shown, the rotating frame 33 is connected to the gear shaft 6, which can drive the rotating frame 33 to rotate. The fixed support 32 is connected to the arc-shaped base 1 through the support column, as shown. Figure 3 As shown, both the rotating support 31 and the fixed support 32 are connected to the arc-shaped base 1 through support columns. The rotating support 31 is provided with an arc-shaped groove 35 that cooperates with the support column to ensure that the support column does not need to be moved when the two first support blocks 311 rotate.

[0055] like Figure 1 As shown, in the rotatable internal support device for mechanical connection tunnel construction provided by the present invention, the rotating support 31 includes two symmetrically arranged first support blocks 311, each of which is equipped with a pressure sensor 312, and the two first support blocks 311 are connected by a rotating frame 33; the fixed support 32 includes two symmetrically arranged second support blocks 321, and the two second support blocks 321 are respectively connected to the arc-shaped base 1 through support columns.

[0056] Furthermore, each first support block 311 has two mounting ears 313 on its side, and each second support block 321 has a connecting pin 322 inserted inside. The end of the connecting pin 322 has a hanging ear 323, which is fitted with the two mounting ears 313 for installation. The mounting ears 313 and the hanging ears 323 are hinged to the bracket at the end of the rotating frame 33 by a fixing pin 34. The side of the first support block 311 is welded with a double layer of mounting ears 313, and the mounting ears 313 and the hanging ears 323 are hinged to the rotating frame 33 by a fixing pin 34.

[0057] Furthermore, the gear transmission device 4 includes a transmission component 41 and a reversing component 42; the transmission component 41 is connected to the reversing component 42 in a transmission manner, and the reversing component 42 is connected to the gear shaft 6 in a transmission manner.

[0058] Among them, such as Figure 5 , Figure 6 , Figure 16 and Figure 17 As shown, the transmission assembly 41 includes a driving wheel 411 and a driven wheel 412 that mesh with each other. The driving wheel 411 is connected to the output shaft 7 of the drive device. The drive device drives the driving wheel 411 to rotate. The driving wheel 411 and the driven wheel 412 are driven together. The driven wheel 412 is connected to a fixed shaft 413 provided on the protective cover of the drive device 2. An isolation plate 414 is provided between the driven wheel 412 and the fixed shaft 413 to reduce friction.

[0059] like Figure 7 , Figure 8 and Figure 15 As shown, the steering assembly 42 includes an arc-shaped fixing box 421, a first steering wheel 423, and a second steering wheel 424. The arc-shaped fixing box 421 is connected to the protective shell via a support leg 422. The second steering wheel 424 is provided in the cavity of the arc-shaped fixing box 421. The second steering wheel 424 is connected to the first steering wheel 423 via a connecting shaft 425 and rotates synchronously. The first steering wheel 423 meshes with the driving wheel 411 or the driven wheel 412, and the second steering wheel 424 meshes with the gear shaft 6 for transmission.

[0060] In addition, such as Figures 9-11As shown, the directional assembly 42 also includes a locking tooth 426, which is located inside the arc-shaped fixing box 421 and close to the gear shaft 6. The locking tooth 426 is used to cooperate with the gear shaft 6. The end of the locking tooth 426 away from the tooth is provided with an arc groove, which matches the connecting shaft 425. The locking tooth 426 is located on the side of the arc-shaped fixing box 421 close to the gear shaft 6 and can move horizontally in one direction. When the connecting shaft 425 moves inside the arc-shaped fixing box 421, it can push the locking tooth 426 out. The gear shaft 6 is provided with a first gear 61 that meshes with the second directional gear, and a second gear 62 that meshes with the locking tooth 426. The second gear 62 is located on both sides of the first gear 61. When the second directional wheel 424 is directional, the locking tooth 426 is pushed out, thereby locking the second gear 62 on the gear shaft 426 and preventing the first gear 61 meshing with the second directional wheel 424 from misaligning.

[0061] Furthermore, in the rotatable internal support device for mechanical connection tunnel construction provided by the present invention, the gear transmission device 4 further includes a traction assembly 43. The traction assembly 43 includes a traction ring 431, a traction shaft 432, a horizontal traction fixing part 433, and a jack 434. The jack 434 is an electro-hydraulic jack 434. The arc-shaped fixing box 421 has a sliding groove 435 for the connecting shaft 425 to pass through. The traction ring 431 is sleeved on the top of the connecting shaft 425 to drive the connecting shaft 425 to move within the sliding groove 435. The support legs 422 of the arc-shaped fixing box 421 are connected to the protective cover of the drive device 2, and are used to fix the first adjusting wheel 423 and the second adjusting wheel 424, so that the first adjusting wheel 423 can only move in an arc along the sliding groove 435 in the horizontal direction, thereby adjusting the direction. The traction shaft 432 is connected to the traction ring 431. The traction shaft 432 is provided with a horizontal traction fixing part 433. A jack 434 is provided at the end of the traction shaft 432 away from the traction ring 431. The jack 434 drives the traction ring 431 and the traction shaft 432 to perform linear reciprocating motion. The jack 434 receives switch control and unloading idling adjustment from the pressure sensor 312 through the computer terminal, and controls its traction direction adjustment and traction idling.

[0062] like Figure 13 , Figure 14 and Figure 20 As shown, the angle measuring device 5 includes a coil 51, a conductive distance measuring strip 52 in contact with the coil 51, a power switch 53, a power board 54, and a voltmeter 55. The power switch 53 is fixed to the bottom of the second support block 321 by a fixing member 56. The power switch 53 and the motor are both controlled by a main power supply, i.e., they are turned on and off simultaneously. The power board 54 has a groove, and the groove is conductive.

[0063] The working process of the rotatable internal support device for mechanical connection tunnel construction provided by this invention is as follows:

[0064] First, determine whether reversing is required. The reversing process of the reversing component 42 is as follows: First, determine whether the first support block 311 needs to rotate to the left or right. If the first support block 311 needs to rotate to the right, the first reversing wheel 423 engages with the driving wheel 411, and the first support block 311 can directly start the next process. When the first support block 311 needs to rotate to the left, the first reversing wheel 423 engages with the driven wheel 412. The pulling component 43 pulls the second reversing wheel 424 to move in an arc within the sliding groove 435, so that the first reversing wheel 423 engages with the driven wheel 412, thereby completing the reversing operation.

[0065] Rotation process: such as Figure 18 and Figure 19 As shown, after the reversing process is completed, the second reversing wheel 424 is fixed by the traction assembly 43 and the arc-shaped fixing box 421. At this time, the motor is turned on, and the driving wheel 411 and the driven wheel 412 begin to rotate. When the first support block 311 needs to rotate to the right, the first reversing wheel 423 meshes with the driving wheel 411, and the second reversing wheel 424, which rotates synchronously with the first reversing wheel 423, meshes with the gear shaft 6, thereby driving the first support block 311 to rotate to the right. When the first support block 311 needs to rotate to the left, the first reversing wheel 423 meshes with the driven wheel 412, and the second reversing wheel 424, which rotates synchronously with the first reversing wheel 423, meshes with the gear shaft 6, thereby driving the first support block 311 to rotate to the left.

[0066] Angle measurement process: Simultaneously with the motor's activation, the power supply to the angle measuring device 5 is also activated. One pole of the power supply is connected to coil 51, and the other pole is connected to the conductive distance measuring strip 52. At this time, the measured angle is zero. When the first support block 311 rotates, the rotating frame 33 rotates synchronously. The connecting pin 322 of the stationary second support block 321 is driven to move linearly, and the two connecting pins 322 move in opposite directions, thus driving the two coils 51 to move in opposite directions. Consequently, the number of turns energized in the coils 51 changes. This change can be indicated by the voltmeter 55. Since the current is constant, the ratio of the voltage change to the current is... The change in resistance is caused by the change in the number of turns of coil 51. Therefore, we can obtain the change in the number of turns of coil 51, which is also the relative displacement of fixing pin 34. The ratio of the relative displacement of fixing pin 34 to half the distance between the two bolt holes gives tanθ, where θ is the angle of rotation. The angle measurement process can be quickly calculated by a computer program, and the power supply can be controlled by a program or buttons. The angle measuring device 5 obtains the angle of rotation by the change in the number of turns of coil 51. Since coil 51 is very small compared to the size of the entire support plate structure, the obtained value is accurate, ensuring the quality of construction. Figure 18 and Figure 19The figure shows the relative positional relationship of the measuring mechanism at a certain moment when it is rotated to the right.

[0067] End of rotation: When the rotation angle reaches the expected angle, or when the pressure sensor 312 on the side of any rotating first support block 311 is subjected to pressure, the jack 434 is unloaded. The push rod of the jack 434 retracts, driving the traction ring 431 and traction shaft 432 to move to the idle position where the first steering wheel 423 is not engaged with either the driving wheel 411 or the driven wheel 412. At the same time, the power supply to the motor and the measuring mechanism is turned off. After the motor stops rotating, the power supply to the electric hydraulic jack 434 is turned off, and the whole process ends.

[0068] It should be understood that the above description of specific embodiments of the present invention is only for illustrating the technical approach and features of the present invention, and is intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. However, the present invention is not limited to the specific embodiments described above. All changes or modifications made within the scope of the claims of the present invention should be covered within the protection scope of the present invention.

Claims

1. A rotatable internal support device suitable for mechanical construction of connecting passages, characterized in that, The device includes an arc-shaped base (1), a drive unit (2), a support rotation device (3), a gear transmission device (4), and an angle measuring device (5). The drive unit is mounted on the arc-shaped base (1). The gear transmission device (4) is connected to the support rotation device (3) via a gear shaft (6). The drive unit (2) drives the gear transmission device (4) to rotate, which in turn drives the support rotation device (3) to rotate. The support rotation device (3) is used to drive the rotating support member (31) mounted on it to rotate so as to fit against the connecting channel segment. The angle measuring device (5) is mounted on the support rotation device (3). The rotating support member (31) includes a support for the rotating support member (31). The gear transmission device (4) includes a transmission assembly (41), a steering assembly (42), and a traction assembly (43). The transmission assembly (41) includes a driving wheel (411) and a driven wheel (412) for meshing transmission. The steering assembly (42) includes a first steering wheel (423) and a second steering wheel (424). The first steering wheel (423) meshes with the driving wheel (411) or the driven wheel (412). The second steering wheel (424) is connected to the first steering wheel (423) through a connecting shaft (425) and achieves synchronous rotation. The steering assembly (42) has a sliding groove (435) for the connecting shaft (425) to pass through. If the first support block (311) needs to rotate to the right, the first steering wheel (423) meshes with the driving wheel (411), and the first support block (311) directly starts the next process, namely the rotation process; when the first support block (311) needs to rotate to the left, the first steering wheel (423) meshes with the driven wheel (412), and the second steering wheel (424) is pulled in an arc shape in the sliding groove (435) by the pulling assembly (43), so that the first steering wheel (423) meshes with the driven wheel (412), thereby completing the steering operation.

2. The rotatable internal support device for mechanical connection tunnel construction according to claim 1, characterized in that, The supporting rotation device (3) further includes a fixed support (32) and a rotating frame (33). The rotating support (31) and the fixed support (32) are arranged opposite to each other and are hinged to the rotating frame (33) by a fixing pin (34). The rotating frame (33) is connected to the gear shaft (6). The gear shaft (6) can drive the rotating frame (33) to rotate. The rotating support (31) and the fixed support (32) are both connected to the arc-shaped base (1) by a support column. The rotating support (31) is provided with an arc-shaped groove (35) that cooperates with the support column.

3. The rotatable internal support device for mechanical connection tunnel construction according to claim 2, characterized in that, Each of the first support blocks (311) is provided with a pressure sensor (312), and the two first support blocks (311) are connected by the rotating frame (33); the fixed support member (32) includes two symmetrically arranged second support blocks (321), and the two second support blocks (321) are respectively connected to the arc-shaped base (1) through the support column.

4. The rotatable internal support device for mechanical connection tunnel construction according to claim 3, characterized in that, Each of the first support blocks (311) has two mounting ears (313) on its side. Each of the second support blocks (321) has a connecting pin (322) inserted inside. The end of the connecting pin (322) has a hanging ear (323). The hanging ear (323) is installed in conjunction with the two mounting ears (313). The mounting ears (313) and the hanging ears (323) are hinged to the bracket at the end of the rotating frame (33) by the fixing pin (34).

5. The rotatable internal support device for mechanical connection tunnel construction according to any one of claims 1-4, characterized in that, The transmission component (41) is connected to the steering component (42), and the steering component (42) is connected to the gear shaft (6).

6. The rotatable internal support device for mechanical connection tunnel construction according to claim 5, characterized in that, The driving wheel (411) is connected to the output shaft (7) of the driving device, the driven wheel (412) is connected to the fixed shaft (413) provided on the driving device (2), and an isolation plate (414) is provided between the driven wheel (412) and the fixed shaft (413).

7. The rotatable internal support device for mechanical connection tunnel construction according to claim 6, characterized in that, The steering assembly (42) includes an arc-shaped fixing box (421); the arc-shaped fixing box (421) is connected to the protective shell through a support leg (422), and the second steering wheel (424) is provided in the receiving cavity of the arc-shaped fixing box (421), and the second steering wheel (424) meshes with the gear shaft (6) for transmission.

8. The rotatable internal support device for mechanical connection tunnel construction according to claim 7, characterized in that, The steering assembly (42) also includes a locking tooth (426), which is located inside the arc-shaped fixing box (421) and close to the gear shaft (6). The locking tooth (426) is used to cooperate with the gear shaft (6).

9. The rotatable internal support device for mechanical connection tunnel construction according to claim 7, characterized in that, The gear transmission device (4) further includes a traction assembly (43), which includes a traction ring (431), a traction shaft (432), a fixing member (56), and a jack (434). The arc-shaped fixing box (421) has a sliding groove (435) for the connecting shaft (425) to pass through. The traction ring (431) is sleeved on the top of the connecting shaft (425) to drive the connecting shaft (425) to move within the sliding groove (435). The traction shaft (432) is connected to the traction ring (431). The traction shaft (432) is provided with a fixing member (56). The jack (434) is provided at one end of the traction shaft (432) away from the traction ring (431). The jack (434) drives the traction ring (431) and the traction shaft (432) to perform linear reciprocating motion.

10. The rotatable internal support device for mechanical connection tunnel construction according to claim 4, characterized in that, The angle measuring device (5) includes a coil (51), a conductive distance measuring strip (52) in contact with the coil (51), a power switch (53), a power board (54), and a voltmeter (55). The coil (51) is wound on the connecting pin (322), and the power switch (53) is fixed to the bottom of the second support block (321) by a fixing member (56).

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