Lateral supporting device and using method

Abstract

The invention discloses a lateral supporting device and a using method, and belongs to the technical field of building construction.The lateral supporting device comprises a base steel beam detachably connected with the ground, a supporting frame is horizontally and slidably arranged on the base steel beam, and a pushing jack used for pushing the supporting frame to slide is arranged on the base steel beam; an auxiliary limiting structure is arranged between the supporting frame body and the base steel beam. A rotating shaft which is horizontally perpendicular to the base steel beam is arranged at the end part of the supporting frame body, a lateral steel beam which is vertically arranged is fixed on the rotating shaft, and an inclinometer is arranged on the lateral steel beam; a jack base is arranged at the top end of the supporting frame body, a horizontal supporting jack is arranged on the jack base, the end of the supporting jack is detachably connected with a U-shaped connecting base, and the two ends of the connecting base are rotationally connected with connecting shafts longitudinally and slidably connected with the side wall of a lateral steel beam correspondingly. And when the top plate structure is dismantled, the temporary enclosure structure cannot be constructed.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and particularly relates to a lateral support device and a use method thereof. Background Art

[0002] The current urban renewal or reconstruction process often involves the demolition and reconstruction of basements. Since the basement structure is subject to the water and soil pressure from the outside, when the top plate structure is removed, the outer wall is in a cantilever state, the stress state is unfavorable, and it is easy to deform. The deformation of the outer wall is likely to endanger the surrounding geotechnical environment. When there are municipal pipelines or roads in the adjacent outdoor area, it will damage the safety of the surrounding municipal pipelines or roads. In the current basement demolition or reconstruction construction process, in order to address this problem, the construction organization usually takes measures to speed up the construction progress by constructing close to the outer wall area. In terms of technical means, a temporary maintenance structure can be constructed on the outside of the outer wall. However, the basement structure is compact, and the construction of the temporary enclosure structure cannot be achieved under compact site conditions. Summary of the invention

[0003] In view of this, the present invention discloses a lateral support device and a method of use, which aims to solve the problem that the temporary enclosure structure cannot be constructed when the basement structure is compact and the top plate structure is removed.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] A lateral support device comprises a base steel beam detachably connected to the ground, a support frame is horizontally slidably arranged on the base steel beam, a pushing jack for pushing the support frame to slide is arranged on the base steel beam, and an auxiliary limiting structure is arranged between the support frame and the base steel beam; a rotating shaft horizontally and perpendicular to the base steel beam is arranged at the end of the support frame, a vertically arranged lateral steel beam is fixed on the rotating shaft, and an inclinometer is arranged on the lateral steel beam; a jack base is arranged at the top of the support frame, a horizontally oriented supporting jack is arranged on the jack base, the top of the support jack is detachably connected with a U-shaped connecting seat, and both ends of the connecting seat are rotatably connected with connecting shafts longitudinally slidably connected to the side walls of the lateral steel beam.

[0006] In this solution, the base steel beam is kept perpendicular to the outer wall and fixed to the ground; the support frame is moved by pushing the jack until the lateral steel beam contacts the outer wall and then the support frame is fixed by the auxiliary limit structure; the support jack is started, and the support jack pushes the lateral steel beam to fit the outer wall through the connecting seat to support the outer wall, and the inclination of the lateral steel beam is observed by the inclinometer, and the load applied by the support jack is adjusted according to the change of the inclination. This solution effectively reduces the volume of the support device and avoids the problem that the temporary enclosure structure cannot be constructed due to the compact structure of the basement.

[0007] Furthermore, a plurality of horizontally arranged mounting grooves are provided on the end surface of the lateral steel beam away from the supporting jack, and support blocks are slidably connected in the mounting grooves; a plurality of vertical slide grooves are provided on both sides of the lateral steel beam, and the support blocks are located in the middle of adjacent slide grooves; the ends of the support blocks extend out of the mounting grooves and are hinged with two symmetrical and obliquely arranged connecting rods, and the ends of the connecting rods are hinged with sliding seats, and the sliding seats are slidably connected to the corresponding sliding grooves, and the sliding grooves are rotatably connected with vertically arranged adjustment sleeves, and the adjustment sleeves vertically penetrate the corresponding sliding seats and are threadedly connected thereto, and the thread directions at both ends of the adjusting sleeves are opposite; a locking structure for limiting the rotation of the adjusting sleeve is provided on the lateral steel beam.

[0008] In this solution, the locking structure releases the lock on the adjustment sleeve and ensures that the support block extends out of the installation slot toward the end face of the outer wall in the initial state; in the process of the support jack pushing the lateral steel beam to fit the outer wall, the support block is pushed into the installation slot by the outer wall, and the support block pushes the corresponding slide seat to move longitudinally in the slide slot through the connecting rod, and the slide seat drives the adjustment sleeve to rotate. When the load applied by the support jack meets the requirements, the annular block is reset and the limit pin is reinstalled. The support block is locked by locking the rotation of the adjustment sleeve to ensure that the support block fits the surface of the outer wall, avoid reducing the contact area between the lateral steel beam and the outer wall due to the uneven surface of the outer wall, and prevent the lateral steel beam from applying uneven supporting force to the outer wall, which affects the stable support of the outer wall.

[0009] Furthermore, the locking structure includes two vertically arranged adjusting shafts, which successively pass through the corresponding slide grooves and adjusting sleeves and are rotatably connected with the lateral steel beam, and a driving structure for driving the adjusting shaft to rotate is provided at the top of the lateral steel beam; an annular block is slidably sleeved on the ends of the adjusting sleeves, and a plurality of connecting grooves for the limit blocks to extend into are provided on the circumference of the adjusting sleeves; a plurality of through grooves corresponding to the slide grooves are provided on the circumference of the adjusting shaft, and each group of through grooves includes two coaxially arranged and annular through grooves, and a plurality of limit grooves for the corresponding limit blocks to be inserted are provided between the two through grooves corresponding to the same slide groove, and the bottoms of adjacent limit grooves are connected to each other, and the heights of the through grooves and the limit grooves are both greater than the height of the limit blocks; and pressure sensors are provided on the end faces of the support blocks.

[0010] Before the support jack pushes the lateral steel beam to fit the outer wall, the annular block is slid upward to make the limit block slide into the top groove, and then the annular block is locked on the adjusting sleeve through the limit pin, so that the support block can slide due to the compression of the outer wall; during the support process, when the outer wall is partially deformed, the pressure on the corresponding support block detected by the pressure sensor exceeds the set range; at this time, the corresponding limit pin is removed, and the corresponding annular block is slid so that the corresponding limit block is located between the two grooves. At this time, the adjusting shaft is driven to rotate through the driving structure, and the adjusting shaft drives the corresponding adjusting sleeve to rotate through the limit block, thereby driving the corresponding sliding seat to slide toward or oppositely, and then pushing the support block to slide, so as to adjust the pressure applied by the support block to the outer wall, thereby adapting to the deformation of the outer wall and preventing the pressure applied by the support block from being too large or too small.

[0011] Furthermore, a coaxial annular groove is provided on the end face of the mounting groove close to the annular block, a plurality of positioning protrusions are provided in the annular groove, and a positioning groove cooperating with the positioning protrusions is provided on the end face of the annular block; a limit pin is detachably connected between the annular block and the adjusting sleeve.

[0012] Furthermore, the auxiliary limiting structure includes a mounting plate hinged to both sides of the bottom of the support frame, a plurality of limiting protrusions are arranged on the mounting plate, and a plurality of limiting grooves cooperating with the limiting protrusions are arranged on both sides of the base steel beam.

[0013] Furthermore, the support frame is arranged to be inclined toward the end surface of the lateral steel beam.

[0014] A method for using a lateral support device comprises the following steps:

[0015] 1) Install the equipment: Keep the base steel beam perpendicular to the outer wall and fix the base steel beam to the ground; push the support frame by pushing the jack until the lateral steel beam contacts the outer wall; rotate the mounting plate so that the limit protrusion is stuck in the limit groove, thereby locking the support frame;

[0016] 2) For external wall support: slide the annular block upward to disengage the positioning protrusion from the positioning groove, and the annular block drives the limit block to slide into the through groove at the top. At this time, the annular block is locked on the adjustment sleeve by the limit pin; in the initial state, the support block extends out of the installation groove toward the end face of the external wall;

[0017] Start the support jack, which pushes the lateral steel beam to fit the outer wall through the connecting seat to support the outer wall. The inclination of the lateral steel beam is observed by the inclinometer, and the load applied by the support jack is adjusted according to the change of the inclination angle.

[0018] During this process, the support block is pushed by the outer wall to move into the installation groove, and the support block pushes the corresponding slide seat to move longitudinally in the slide groove through the connecting rod, and the slide seat drives the adjustment sleeve to rotate. When the load applied by the support jack meets the requirements, the annular block is reset and the limit pin is reinstalled. The support block is locked by locking the rotation of the adjustment sleeve to ensure that the support block fits the surface of the outer wall;

[0019] 3) Local support block adjustment: When the pressure on the corresponding support block detected by the pressure sensor exceeds the set range, remove the corresponding limit pin and slide the corresponding annular block so that the corresponding limit block is located between the two through grooves. At this time, the adjusting shaft is driven to rotate through the driving structure, and the adjusting shaft drives the corresponding adjusting sleeve to rotate through the limit block, thereby driving the corresponding slide seat to slide toward or oppositely, and then pushing the support block to slide, so as to adjust the pressure applied by the support block to the outer wall.

[0020] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0022] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0023] Figure 2 for Figure 1 The local schematic diagram of the A in the middle;

[0024] Figure 3 is a longitudinal cross-sectional view of a lateral steel beam in an embodiment of the present invention;

[0025] Figure 4 for Figure 3 A partial schematic diagram of point B in the middle.

[0026] The markings in the accompanying drawings are as follows: base steel beam 1, support frame 2, push jack 3, rotating shaft 4, lateral steel beam 5, jack base 6, supporting jack 7, connecting seat 8, support block 9, connecting rod 10, slide seat 11, adjusting sleeve 12, adjusting shaft 13, annular block 14, limit block 15, connecting groove 16, limit groove 17, positioning protrusion 18, mounting plate 19, limit protrusion 20, connecting shaft 21, through groove 22. DETAILED DESCRIPTION

[0027] like Figures 1 to 4 As shown:

[0028] A lateral support device comprises a base steel beam 1 detachably connected to the ground, a support frame 2 is horizontally slidably arranged on the base steel beam 1, a pushing jack 3 for pushing the support frame 2 to slide is arranged on the base steel beam 1, and an auxiliary limiting structure is arranged between the support frame 2 and the base steel beam 1; a rotating shaft 4 horizontally perpendicular to the base steel beam 1 is arranged at the end of the support frame 2, a vertically arranged lateral steel beam 5 is fixed on the rotating shaft 4, and an inclinometer is arranged on the lateral steel beam 5 (conventional technical means, so it is not drawn in the figure); a jack base 6 is arranged at the top of the support frame 2, a horizontally oriented supporting jack 7 is arranged on the jack base 6, and a U-shaped connecting seat 8 is detachably connected to the end of the supporting jack 7, and both ends of the connecting seat 8 are rotatably connected to connecting shafts 21 connected to the side walls of the lateral steel beam 5 for longitudinal sliding.

[0029] In this solution, the base steel beam 1 is kept perpendicular to the outer wall and fixed to the ground; the support frame 2 is pushed by pushing the jack 3 until the lateral steel beam 5 contacts the outer wall and then the support frame 2 is fixed by the auxiliary limit structure; the support jack 7 is started, and the support jack 7 pushes the lateral steel beam 5 to fit the outer wall through the connecting seat 8 to support the outer wall, and the inclination of the lateral steel beam 5 is observed by the inclinometer, and the load applied by the support jack 7 is adjusted according to the change of the inclination. The support jack 7 realizes automatic control according to the feedback, which is a conventional technical means and will not be described in detail. This solution effectively reduces the volume of the support device and avoids the problem that the temporary enclosure structure cannot be constructed due to the compact structure of the basement.

[0030] In this embodiment, a plurality of horizontally arranged mounting grooves are provided on the end surface of the lateral steel beam 5 away from the supporting jack 7, and support blocks 9 are slidably connected in the mounting grooves; a plurality of vertical slide grooves are provided on both sides of the lateral steel beam 5, and the support block 9 is located in the middle of adjacent slide grooves; the ends of the support blocks 9 extend out of the mounting grooves and are hinged with two symmetrical and obliquely arranged connecting rods 10, and the ends of the connecting rods 10 are hinged with slide seats 11, and the slide seats 11 are slidably connected to the corresponding slide grooves, and vertically arranged adjusting sleeves 12 are rotatably connected in the slide grooves, and the adjusting sleeves 12 vertically penetrate the corresponding slide seats 11 and are threadedly connected thereto, and the thread directions of the two ends of the adjusting sleeves 12 are opposite; a locking structure for limiting the rotation of the adjusting sleeve 12 is provided on the lateral steel beam 5.

[0031] In this solution, the locking structure releases the lock on the adjustment sleeve 12 and ensures that the support block 9 extends out of the installation groove toward the end face of the outer wall in the initial state; in the process of the support jack 7 pushing the lateral steel beam 5 to fit the outer wall, the support block 9 is pushed into the installation groove by the outer wall, and the support block 9 pushes the corresponding slide seat 11 to move longitudinally in the slide groove through the connecting rod 10, and the slide seat 11 drives the adjustment sleeve 12 to rotate. When the load applied by the support jack 7 meets the requirements, the annular block 14 is reset and the limit pin is reinstalled. The support block 9 is locked by locking the rotation of the adjustment sleeve 12 to ensure that the support block 9 fits the surface of the outer wall, avoiding the reduction of the contact area between the lateral steel beam 5 and the outer wall due to the uneven surface of the outer wall, thereby preventing the lateral steel beam 5 from applying uneven supporting force to the outer wall and affecting the stable support of the outer wall.

[0032] In this embodiment, the locking structure includes two vertically arranged adjustment shafts 13, which sequentially penetrate the corresponding slide grooves and adjustment sleeves 12 and are rotatably connected to the lateral steel beam 5. A driving structure for driving the adjustment shaft 13 to rotate is arranged at the top of the lateral steel beam 5 (the driving structure in this embodiment is driven by a motor, which belongs to conventional technical means, so it is not drawn in the figure); the ends of the adjustment sleeves 12 are slidably sleeved with annular blocks 14, and the peripheral side of the adjustment sleeves 12 is provided with a plurality of connecting grooves 16 for the limit blocks 15 to extend into, and the peripheral side of the adjustment shaft 13 is provided with a plurality of groups of through grooves 22 corresponding to the slide grooves, each group of through grooves 22 includes two coaxially arranged and annular through grooves 22, and a plurality of limit grooves 17 for the corresponding limit blocks 15 to be inserted are arranged between the two through grooves 22 corresponding to the same slide groove, and the bottoms of adjacent limit grooves 17 are connected to each other, and the heights of the through grooves 22 and the limit grooves 17 are both greater than the height of the limit blocks 15; and the end surfaces of the support blocks 9 are provided with pressure sensors.

[0033] Before the supporting jack 7 pushes the lateral steel beam 5 to fit the outer wall, the annular block 14 is slid upwards to make the limit block 15 slide into the through groove 22 at the top, and then the annular block 14 is locked on the adjusting sleeve 12 through the limit pin, so that the supporting block 9 can slide under the pressure of the outer wall; during the supporting process, when the outer wall is partially deformed, the pressure on the corresponding supporting block 9 detected by the pressure sensor exceeds the set range; at this time, the corresponding limit pin is removed, and the corresponding annular block 14 is slid so that the corresponding limit block 15 is located between the two through grooves 22. At this time, the adjusting shaft 13 is driven to rotate through the driving structure, and the adjusting shaft 13 drives the corresponding adjusting sleeve 12 to rotate through the limit block 15, thereby driving the corresponding sliding seat 11 to slide toward or oppositely, thereby pushing the supporting block 9 to slide, so as to adjust the pressure applied by the supporting block 9 to the outer wall, thereby adapting to the deformation of the outer wall and preventing the pressure applied by the supporting block 9 from being too large or too small.

[0034] In this embodiment, a coaxial annular groove is provided on the end face of the mounting groove close to the annular block 14, a plurality of positioning protrusions 18 are provided in the annular groove, and a positioning groove cooperating with the positioning protrusions 18 is provided on the end face of the annular block 14; a limit pin is detachably connected between the annular block 14 and the adjusting sleeve 12.

[0035] The cooperation between the positioning protrusion 18 and the positioning groove prevents the adjusting sleeve 12 from deflecting relative to the slide groove during the supporting process, thereby preventing the stability of the support from being affected.

[0036] In this embodiment, the auxiliary limiting structure includes a mounting plate 19 hinged to both sides of the bottom of the support frame 2, and a plurality of limiting protrusions 20 are provided on the mounting plate 19. Both sides of the base steel beam 1 are provided with a plurality of limiting grooves that cooperate with the limiting protrusions 20.

[0037] By providing the limiting protrusion 20 and the limiting groove, the stability between the support frame 2 and the base steel beam 1 is enhanced during the supporting process.

[0038] In this embodiment, the support frame 2 is arranged to be inclined toward the end surface of the lateral steel beam 5, so as to reserve space for the lateral steel beam 5 to deflect.

[0039] A method for using a lateral support device comprises the following steps:

[0040] 1) Install the equipment: keep the base steel beam 1 perpendicular to the outer wall and fix the base steel beam 1 to the ground; push the support frame 2 by pushing the jack 3 until the lateral steel beam 5 contacts the outer wall; rotate the mounting plate 19 so that the limiting protrusion 20 is inserted into the limiting groove, thereby locking the support frame 2;

[0041] 2) Supporting the external wall: Slide the annular block 14 upward to disengage the positioning protrusion 18 from the positioning groove, and the annular block 14 drives the limit block 15 to slide into the through groove 22 at the top. At this time, the annular block 14 is locked on the adjustment sleeve 12 by the limit pin; in the initial state, the support block 9 extends out of the installation groove toward the end face of the external wall;

[0042] Start the support jack 7, which pushes the lateral steel beam 5 to fit the outer wall through the connecting seat 8 to support the outer wall. The inclination angle of the lateral steel beam 5 is observed by the inclinometer, and the load applied by the support jack 7 is adjusted according to the change of the inclination angle.

[0043] During this process, the support block 9 is pushed by the outer wall to move into the installation groove, and the support block 9 pushes the corresponding slide seat 11 to move and slide longitudinally in the slide groove through the connecting rod 10, and the slide seat 11 drives the adjustment sleeve 12 to rotate. When the load applied by the support jack 7 meets the requirements, the annular block 14 is reset and the limit pin is reinstalled, and the support block 9 is locked by locking the rotation of the adjustment sleeve 12 to ensure that the support block 9 fits the surface of the outer wall; avoid reducing the contact surface between the lateral steel beam 5 and the outer wall due to the uneven surface of the outer wall, thereby preventing the lateral steel beam 5 from applying uneven support force to the outer wall, affecting the stable support of the outer wall;

[0044] 3) Adjustment of local support block 9: When the pressure on the corresponding support block 9 detected by the pressure sensor exceeds the set range, remove the corresponding limit pin and slide the corresponding annular block 14 so that the corresponding limit block 15 is located between the two through grooves 22. At this time, the adjusting shaft 13 is driven to rotate through the driving structure, and the adjusting shaft 13 drives the corresponding adjusting sleeve 12 to rotate through the limit block 15, thereby driving the corresponding slide seat 11 to slide toward or oppositely, thereby pushing the support block 9 to slide, so as to adjust the pressure applied by the support block 9 to the outer wall.

[0045] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A lateral support device, characterized in that: It includes a base steel beam detachably connected to the ground, a support frame is horizontally slidably arranged on the base steel beam, a pushing jack for pushing the support frame to slide is arranged on the base steel beam, and an auxiliary limiting structure is arranged between the support frame and the base steel beam; a rotating shaft horizontally and perpendicular to the base steel beam is arranged at the end of the support frame, a vertically arranged lateral steel beam is fixed on the rotating shaft, and an inclinometer is arranged on the lateral steel beam; a jack base is arranged at the top of the support frame, a horizontally facing supporting jack is arranged on the jack base, the top of the support jack is detachably connected with a U-shaped connecting seat, and both ends of the connecting seat are rotatably connected with connecting shafts longitudinally slidably connected to the side walls of the lateral steel beam.

2. A lateral support device according to claim 1, characterized in that: The end surface of the lateral steel beam away from the supporting jack is provided with a plurality of horizontally arranged mounting grooves, and support blocks are slidably connected in the mounting grooves; a plurality of vertical slide grooves are provided on both sides of the lateral steel beam, and the support blocks are located in the middle of adjacent slide grooves; the ends of the support blocks extend out of the mounting grooves and are hinged with two symmetrical and obliquely arranged connecting rods, and the ends of the connecting rods are hinged with sliding seats, and the sliding seats are slidably connected to the corresponding sliding grooves, and the sliding grooves are rotatably connected with vertically arranged adjusting sleeves, and the adjusting sleeves vertically penetrate the corresponding sliding seats and are threadedly connected thereto, and the thread directions at both ends of the adjusting sleeves are opposite; a locking structure for limiting the rotation of the adjusting sleeve is provided on the lateral steel beam.

3. A lateral support device according to claim 2, characterized in that: The locking structure includes two vertically arranged adjusting shafts, which sequentially pass through the corresponding slide grooves and adjusting sleeves and are rotatably connected to the lateral steel beam, and a driving structure for driving the adjusting shaft to rotate is provided at the top of the lateral steel beam; an annular block is slidably sleeved on the ends of the adjusting sleeves, and a plurality of connecting grooves for the limit blocks to extend into are provided on the circumference of the adjusting sleeves; a plurality of through grooves corresponding to the slide grooves are provided on the circumference of the adjusting shaft, and each group of through grooves includes two coaxially arranged and annular through grooves, and a plurality of limit grooves for the corresponding limit blocks to be inserted are provided between the two through grooves corresponding to the same slide groove, and the bottoms of adjacent limit grooves are connected to each other, and the heights of the through grooves and the limit grooves are both greater than the height of the limit blocks; pressure sensors are provided on the end faces of the support blocks.

4. A lateral support device according to claim 3, characterized in that: A coaxial annular groove is arranged on the end face of the mounting groove close to the annular block, a plurality of positioning protrusions are arranged in the annular groove, and a positioning groove cooperating with the positioning protrusions is arranged on the end face of the annular block; a limit pin is detachably connected between the annular block and the adjusting sleeve.

5. A lateral support device according to claim 4, characterized in that: The auxiliary limiting structure includes a mounting plate hinged to both sides of the bottom of the support frame, a plurality of limiting protrusions are arranged on the mounting plate, and a plurality of limiting grooves cooperating with the limiting protrusions are arranged on both sides of the base steel beam.

6. A lateral support device according to claim 5, characterized in that: The support frame is arranged to be inclined toward the end surface of the lateral steel beam.

7. A method for using a lateral support device according to claim 6, characterized in that: The steps include: 1) Install the equipment: Keep the base steel beam perpendicular to the outer wall and fix the base steel beam to the ground; push the support frame by pushing the jack until the lateral steel beam contacts the outer wall; rotate the mounting plate so that the limit protrusion is stuck in the limit groove, thereby locking the support frame; 2) For external wall support: slide the annular block upward to disengage the positioning protrusion from the positioning groove, and the annular block drives the limit block to slide into the through groove at the top. At this time, the annular block is locked on the adjustment sleeve by the limit pin; in the initial state, the support block extends out of the installation groove toward the end face of the external wall; Start the support jack, which pushes the lateral steel beam to fit the outer wall through the connecting seat to support the outer wall. The inclination of the lateral steel beam is observed by the inclinometer, and the load applied by the support jack is adjusted according to the change of the inclination angle. During this process, the support block is pushed by the outer wall to move into the installation groove, and the support block pushes the corresponding slide seat to move longitudinally in the slide groove through the connecting rod, and the slide seat drives the adjustment sleeve to rotate. When the load applied by the support jack meets the requirements, the annular block is reset and the limit pin is reinstalled. The support block is locked by locking the rotation of the adjustment sleeve to ensure that the support block fits the surface of the outer wall; 3) Local support block adjustment: When the pressure on the corresponding support block detected by the pressure sensor exceeds the set range, the corresponding limit pin is removed and the corresponding annular block is slid so that the corresponding limit block is located between the two through grooves. At this time, the adjusting shaft is driven to rotate through the driving structure, and the adjusting shaft drives the corresponding adjusting sleeve to rotate through the limit block, thereby driving the corresponding slide seat to slide toward or oppositely, and then pushing the support block to slide, so as to adjust the pressure applied by the support block to the outer wall.

Images