Lateral support device and method of use

Abstract

The application discloses a lateral support device and a use method, and belongs to the technical field of building construction, and comprises a base steel beam which is detachably connected with the ground, a support frame body is horizontally slidably arranged on the base steel beam, a pushing jack for pushing the support frame body to slide is arranged on the base steel beam, and an auxiliary limiting structure is arranged between the support frame body and the base steel beam; a rotating shaft which is horizontal and perpendicular to the base steel beam is arranged at the end of the support 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 support frame body, a horizontal support jack is arranged on the jack base, a U-shaped connecting seat is detachably connected to the end of the support jack, and connecting shafts which are longitudinally and slidably connected with the side walls of the lateral steel beam are rotatably connected to the two ends of the connecting seat, so as to solve the problem that the temporary enclosure structure cannot be constructed when the roof structure is removed due to the compact basement structure.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of building construction, and particularly relates to a lateral support device and a use method. BACKGROUND

[0002] In the current urban renewal or reconstruction process, the basement is often involved in the demolition and reconstruction. Because the basement structure is subjected to the lateral water and soil pressure, when the roof structure is demolished, the outer wall is in a cantilever state, and the stress state is not conducive, and deformation is prone to occur. The deformation of the outer wall is easy to endanger the surrounding soil environment, and when there are municipal pipelines or roads in the adjacent outdoor area, the safety of the surrounding municipal pipelines or roads is damaged. In the current construction process of basement demolition or reconstruction, in view of this problem, the construction organization usually adopts the measures of constructing near the outer wall area and accelerating the construction progress. In terms of technical means, a temporary maintenance structure can be constructed outside the outer wall. However, the basement structure is compact, and the temporary enclosure structure cannot be constructed under the compact site condition. SUMMARY

[0003] Therefore, the present application discloses a lateral support device and a use method, which aims to solve the problem that the temporary enclosure structure cannot be constructed when the roof structure is demolished due to the compact basement structure.

[0004] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:

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

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

[0007] Further, the lateral steel beam is provided with a plurality of horizontally arranged mounting grooves on the end face away from the supporting jack, and the supporting blocks are slidably connected in the mounting grooves; a plurality of vertical sliding grooves are arranged on the two sides of the lateral steel beam, and the supporting blocks are located in the middle of the adjacent sliding grooves; two symmetrically and obliquely arranged connecting rods are hingedly connected to the end of the supporting block extending out of the mounting groove, and the end of the connecting rod is hingedly connected with a sliding seat, which is slidably connected with the corresponding sliding groove; a vertically arranged adjusting sleeve is rotatably connected in the sliding groove, and the adjusting sleeve vertically penetrates the corresponding sliding seat and is threadedly connected therewith, and the thread directions of the two ends of the adjusting sleeve are opposite; the lateral steel beam is provided with a locking structure for limiting the rotation of the adjusting sleeve.

[0008] In the scheme, the locking of the adjusting sleeve by the locking structure is released, and the end face of the supporting block facing the outer wall is ensured to extend out of the mounting groove in the initial state; in the process of pushing the lateral steel beam to adhere to the outer wall by the supporting jack, the supporting block is pushed by the outer wall to move into the mounting groove, and the supporting block pushes the corresponding sliding seat to move in the sliding groove to longitudinally slide, and the sliding seat drives the adjusting sleeve to rotate; after the load applied by the supporting jack meets the requirements, the limiting pin is reinstalled after the annular block is reset, the rotation of the adjusting sleeve is locked to lock the supporting block, the supporting block is ensured to adhere to the surface of the outer wall, the reduction of the contact surface of the lateral steel beam and the outer wall caused by the unevenness of the surface of the outer wall is avoided, and the uneven support force applied by the lateral steel beam on the outer wall is prevented, thereby affecting the stable support of the outer wall.

[0009] Further, the locking structure comprises two vertically arranged adjusting shafts, which penetrate the corresponding sliding grooves and adjusting sleeves in sequence and are rotatably connected with the lateral steel beam; the top end of the lateral steel beam is provided with a driving structure for driving the rotation of the adjusting shaft; the end of the adjusting sleeve is slidably sleeved with an annular block; the lateral surface of the adjusting sleeve is provided with a plurality of communication grooves for the extension of the limiting blocks; the lateral surface of the adjusting shaft is provided with a plurality of groups of through grooves corresponding to the sliding grooves, each group of through grooves comprises two coaxially arranged and annular through grooves, a plurality of limiting grooves for the insertion of the corresponding limiting blocks are arranged between the two through grooves corresponding to the same sliding groove, the bottoms of the adjacent limiting grooves are communicated with each other, and the heights of the through grooves and the limiting grooves are greater than the height of the limiting block; the end face of the supporting block is provided with a pressure sensor.

[0010] Before the process of pushing the lateral steel beam to adhere to the outer wall by the supporting jack, slide the annular block upwards, make the limiting block slide into the through slot at the top, and then lock the annular block on the adjusting sleeve through the limiting pin, so that the supporting block can slide under the extrusion of the outer wall; during the supporting process, when local deformation occurs in the outer wall, the pressure sensor detects that the pressure borne by the corresponding supporting block exceeds the set range; at this time, the corresponding limiting pin is removed, and the corresponding annular block is slid, so that the corresponding limiting block is located between the two through slots; at this time, the adjusting shaft is driven to rotate through the driving structure, the adjusting shaft drives the corresponding adjusting sleeve to rotate through the limiting block, and then the corresponding sliding seat slides towards or away, thereby pushing the supporting block to slide, so as to adjust the pressure applied by the supporting block to the outer wall, so as to adapt to the deformation of the outer wall and prevent the supporting block from applying too large or too small pressure.

[0011] Further, the end face of the sliding groove close to the annular block is provided with a coaxial annular groove, a plurality of positioning protrusions are arranged in the annular groove, and a positioning groove matched with the positioning protrusions is arranged on the end face of the annular block; the annular block and the adjusting sleeve are detachably connected with the limiting pin.

[0012] Further, the auxiliary limiting structure comprises mounting plates hinged to the bottom of the supporting frame body on both sides, a plurality of limiting protrusions are arranged on the mounting plates, and a plurality of limiting grooves matched with the limiting protrusions are arranged on both sides of the base steel beam.

[0013] Further, the end face of the supporting frame body towards the lateral steel beam is obliquely arranged.

[0014] A use method of a lateral supporting device, comprising 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 supporting frame body to move by the pushing jack until the lateral steel beam contacts the outer wall; rotate the mounting plate to make the limiting protrusions clamped into the limiting grooves, so as to lock the supporting frame body;

[0016] 2) Support the outer wall: slide the annular block upwards to make the positioning protrusions disengage from the positioning grooves, and then the annular block drives the limiting block to slide into the through slot at the top; at this time, the annular block is locked on the adjusting sleeve through the limiting pin; in the initial state, the end face of the supporting block towards the outer wall extends out of the mounting slot;

[0017] Start the supporting jack, the supporting jack pushes the lateral steel beam to adhere to the outer wall through the connecting seat, and supports the outer wall; the inclination of the lateral steel beam is observed by the inclination instrument, and the load applied by the supporting jack is adjusted through the inclination change;

[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 to slide longitudinally in the slide groove through the connecting rod. The slide 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 outer wall surface.

[0019] 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 adjustment shaft is driven to rotate by the driving structure, and the adjustment shaft drives the corresponding adjustment sleeve to rotate through the limit block, thereby driving the corresponding slide 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 can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 1 Schematic diagram of the structure of an embodiment of the present invention;

[0023] Figure 2 for Figure 1 A partial schematic diagram of the middle part;

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

[0025] Figure 4 for Figure 3 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 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 1-4 As shown:

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

[0029] In the scheme, the base steel beam 1 is kept perpendicular to the outer wall, and the base steel beam 1 is fixed with the ground; the support frame body 2 is moved by the pushing jack 3 until the lateral steel beam 5 contacts the outer wall, and then the support frame body 2 is fixed by the auxiliary limiting structure; the support jack 7 is started, the support jack 7 pushes the lateral steel beam 5 to fit the outer wall through the connecting seat 8, and the outer wall is supported, the inclination of the lateral steel beam 5 is observed by the inclinometer, the load applied by the support jack 7 is adjusted according to the inclination change, and the support jack 7 is automatically controlled according to the feedback, which is a conventional technical means and will not be described in detail. The scheme effectively reduces the size 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 the embodiment, a plurality of horizontally arranged mounting grooves are formed in the end face of the lateral steel beam 5 away from the support jack 7, and support blocks 9 are slidingly connected in the mounting grooves; a plurality of vertical sliding grooves are formed in the two sides of the lateral steel beam 5, and the support blocks 9 are located in the middle of adjacent sliding grooves; two symmetrical and inclined connecting rods 10 are hinged at the end of the support block 9 extending out of the mounting groove, slide seats 11 are hinged at the ends of the connecting rods 10, the slide seats 11 are slidingly connected with the corresponding sliding grooves, vertical adjusting sleeves 12 are rotatably connected in the sliding grooves, the adjusting sleeves 12 vertically penetrate the corresponding slide seats 11 and are threadedly connected therewith, and the thread directions of the two ends of the adjusting sleeves 12 are opposite; the lateral steel beam 5 is provided with a locking structure for limiting the rotation of the adjusting sleeve 12.

[0031] In the scheme, the locking structure is unlocked to adjust the sleeve 12, and ensure that the end surface of the support block 9 extends out of the mounting groove in the initial state; during the process of pushing the lateral steel beam 5 to adhere to the outer wall by the support jack 7, the support block 9 is pushed by the outer wall to move into the mounting groove, and the support block 9 pushes the corresponding sliding seat 11 to move in the sliding groove by the connecting rod 10, and the sliding seat 11 drives the adjusting sleeve 12 to rotate, and when the load applied by the support jack 7 meets the requirements, the ring block 14 is reset and the limit pin is reinstalled, the rotation of the adjusting sleeve 12 is locked to lock the support block 9, and the support block 9 is ensured to adhere to the surface of the outer wall, so that the contact area between the lateral steel beam 5 and the outer wall is reduced due to the uneven surface of the outer wall, and the support force applied by the lateral steel beam 5 to the outer wall is prevented from being uneven, thereby affecting the stable support of the outer wall.

[0032] In the embodiment, the locking structure includes two vertically arranged adjusting shafts 13, the adjusting shafts 13 pass through the corresponding sliding grooves and the adjusting sleeves 12 in sequence and are rotationally connected with the lateral steel beam 5, the top end of the lateral steel beam 5 is provided with a driving structure for driving the adjusting shaft 13 to rotate (in the embodiment, the driving structure is driven by a motor, which is a conventional technical means, so it is not shown in the figure); the end of the adjusting sleeve 12 is slidably sleeved with a ring block 14, the lateral surface of the adjusting sleeve 12 is provided with a plurality of communication grooves 16 for the extension of the limiting blocks 15, the lateral surface of the adjusting shaft 13 is provided with a plurality of groups of through grooves 22 corresponding to the sliding grooves, each group of through grooves 22 includes two coaxially arranged and annular through grooves 22, a plurality of limiting grooves 17 for inserting the corresponding limiting blocks 15 are arranged between the two through grooves 22 corresponding to the same sliding groove, the bottoms of the adjacent limiting grooves 17 are communicated with each other, and the heights of the through grooves 22 and the limiting grooves 17 are greater than the height of the limiting block 15; the end surface of the support block 9 is provided with a pressure sensor.

[0033] Before the process of pushing the lateral steel beam 5 to adhere to the outer wall by the support jack 7, the ring block 14 is slid upward, the limiting block 15 slides into the top through groove 22, and the ring block 14 is locked on the adjusting sleeve 12 by the limiting pin, so that the support block 9 can slide under the extrusion of the outer wall; during the support process, when the outer wall locally deforms, the pressure sensor detects that the pressure borne by the corresponding support block 9 exceeds the set range; at this time, the corresponding limiting pin is removed, and the corresponding ring block 14 is slid to make the corresponding limiting block 15 located between the two through grooves 22, at this time, the adjusting shaft 13 is driven to rotate by the driving structure, the adjusting shaft 13 drives the corresponding adjusting sleeve 12 to rotate through the limiting block 15, and then drives the corresponding sliding seat 11 to slide towards or away, and then pushes the support block 9 to slide, so as to adjust the pressure applied by the support block 9 to the outer wall, so as to adapt to the deformation of the outer wall and prevent the pressure applied by the support block 9 from being too large or too small.

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

[0035] Through the cooperation of the positioning protrusions 18 and the positioning groove, the adjusting sleeve 12 is prevented from being deflected relative to the sliding groove during the supporting process, thereby affecting the stability of the supporting.

[0036] In the embodiment, the auxiliary limiting structure includes mounting plates 19 hinged to the bottom of the supporting frame body 2 on both sides, and a plurality of limiting protrusions 20 are arranged on the mounting plates 19, and a plurality of limiting grooves matched with the limiting protrusions 20 are arranged on both sides of the base steel beam 1.

[0037] Through the arrangement of the limiting protrusions 20 and the limiting grooves, the stability between the supporting frame body 2 and the base steel beam 1 during the supporting process is strengthened.

[0038] In the embodiment, the end face of the supporting frame body 2 towards the lateral steel beam 5 is arranged to be inclined, so as to reserve space for the deflection of the lateral steel beam 5.

[0039] A use method of the lateral supporting device, including the following steps:

[0040] 1), installation equipment: keep the base steel beam 1 perpendicular to the outer wall, and fix the base steel beam 1 with the ground; move the supporting frame body 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 protrusions 20 are clamped into the limiting grooves, thereby locking the supporting frame body 2;

[0041] 2), supporting the outer wall: slide the annular block 14 upwards so that the positioning protrusions 18 are separated from the positioning groove, and the annular block 14 drives the limiting block 15 to slide into the top through groove 22, and at this time, the annular block 14 is locked on the adjusting sleeve 12 through the limiting pin; in the initial state, the end face of the supporting block 9 extending out of the mounting groove faces the outer wall;

[0042] Start the supporting jack 7, and the supporting jack 7 pushes the lateral steel beam 5 to adhere to the outer wall through the connecting seat 8, thereby supporting the outer wall, and the inclination of the lateral steel beam 5 is observed through the inclination instrument, and the load applied by the supporting jack 7 is adjusted through the inclination change;

[0043] In the process, the support block 9 is pushed by the outer wall to move into the installation slot, and the support block 9 pushes the corresponding sliding seat 11 to slide longitudinally in the sliding groove through the connecting rod 10, and the sliding seat 11 drives the adjusting sleeve 12 to rotate. After the load applied by the support jack 7 meets the requirements, the annular block 14 is reset, the limiting pin is reinstalled, the rotation of the adjusting sleeve 12 is locked to lock the support block 9, and the support block 9 is ensured to be attached to the surface of the outer wall; the lateral steel beam 5 is prevented from being in contact with the outer wall due to the uneven surface of the outer wall, the contact area between the lateral steel beam 5 and the outer wall is reduced, and the support force applied by the lateral steel beam 5 to the outer wall is prevented from being uneven, thereby affecting the stable support of the outer wall.

[0044] 3) Local support block 9 adjustment: when the pressure sensor detects that the pressure borne by the corresponding support block 9 exceeds the set range, the corresponding limiting pin is removed, and the corresponding annular block 14 is slid to make the corresponding limiting block 15 located between the two through grooves 22. At this time, the adjusting shaft 13 is driven to rotate by the driving structure, the adjusting shaft 13 drives the corresponding adjusting sleeve 12 to rotate through the limiting block 15, and then drives the corresponding sliding seat 11 to slide towards or away, and then pushes 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 pointed out that the above preferred embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application 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 application.

Claims

1. A lateral support device, characterized in that: The jack is mounted on a vertical cam which is located on the top of the support frame and has a U-shaped connecting seat at the top end and a U-shaped connecting seat at the bottom end. The lateral steel beam is provided with a plurality of horizontal mounting grooves on the end surface away from the supporting jack, and the mounting grooves are slidably connected to support blocks; 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 groove and are hinged with two symmetrical and obliquely arranged connecting rods, the ends of the connecting rods are hinged with slides, the slides are slidably connected to the corresponding slide grooves, and the slide grooves are rotatably connected with vertically arranged adjusting sleeves, the adjusting sleeves vertically penetrate the corresponding slide 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.

2. A lateral support device according to claim 1, 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; the ends of the adjusting sleeves are slidably sleeved with an annular block, and the circumference of the adjusting sleeve is provided with a plurality of connecting grooves for the limit blocks to extend into, and the circumference of the adjusting shaft is provided with a plurality of through grooves corresponding to the slide grooves, 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 limit grooves are both greater than the height of the limit blocks; pressure sensors are provided on the end faces of the support blocks.

3. A lateral support device according to claim 2, characterized in that: A coaxial annular groove is provided on the end face of the slide 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.

4. A lateral support device according to claim 3, 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 provided on the mounting plate, and a plurality of limiting grooves cooperating with the limiting protrusions are provided on both sides of the base steel beam.

5. A lateral support device according to claim 4, characterized in that: The support frame is arranged to be inclined toward the end surface of the lateral steel beam.

6. The method for using the lateral support device according to claim 5, characterized in that: The steps include: 1) Install the equipment: Keep the base steel beam perpendicular to the outer wall and fix it 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. The annular block then drives the limit block to slide into the top through groove. 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, thus supporting the outer wall. The inclination angle 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 to slide longitudinally in the slide groove through the connecting rod. The slide 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 outer wall surface. 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 adjustment shaft is driven to rotate by the driving structure, and the adjustment shaft drives the corresponding adjustment sleeve to rotate through the limit block, thereby driving the corresponding slide 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