Safety protection device and method for mounting overhead lower arch frame of tunnel

Abstract

The invention relates to a safety protection device and a safety protection method for mounting an overhead lower arch frame of a tunnel. The device comprises a construction table cover for clamping the top of an arch frame, a lifting mechanism arranged at the lower end of the construction table cover, a rotating mechanism arranged at the lower end of the lifting mechanism, an arch frame transverse adjusting mechanism arranged at the lower end of the rotating mechanism and an arch frame longitudinal adjusting mechanism arranged at the lower end of the arch frame transverse adjusting mechanism. The rotating mechanism is used for driving the construction table cover to rotate, the arch frame transverse adjusting mechanism and the arch frame longitudinal adjusting mechanism are used for adjusting the transverse position and the longitudinal position of the construction table cover, and the arch frame transverse adjusting mechanism and the arch frame longitudinal adjusting mechanism are used for adjusting the transverse position and the longitudinal position of the construction table cover. The lifting mechanism is used for moving up and down to adjust the top of the arch frame to be attached to the top of the mounting section, the transverse telescopic mechanism is used for supporting the two sides of the lower end of the arch frame to be attached to the mounting section, mechanical positioning mounting of the arch frame is achieved, the construction efficiency is high, and safety is high.

Description

Technical Field

[0001] The present invention belongs to the technical field of tunnel construction equipment, and particularly relates to a safety protection device and method for installing an arch frame under a tunnel's free face. Background Art

[0002] When installing an arch frame in a tunnel, the arch frame needs to be fitted to the installation section in the tunnel, and the positioning of the arch frame and the installation section must be accurate. The existing method is to build a mobile support in the tunnel. Some construction workers stand above the support, while another part of the construction workers stand on the ground on both sides of the tunnel. After fitting the arch frame to the installation section, the top and both sides of the arch frame are fixed to the tunnel installation section simultaneously to complete the installation. When positioning the arch frame and the installation section, it is usually manually adjusted by multiple construction workers, which not only has low construction efficiency but also wastes human resources. Moreover, since there are falling objects at any time in the excavation section of the tunnel, the construction safety is poor. Summary of the Invention

[0003] Aiming at the above problems, the purpose of the present invention is to provide a safety protection device and method for installing an arch frame under a tunnel's free face, which solves the problem that traditional arch frame installation requires a large amount of manpower for handling and positioning, has high construction efficiency, and high construction safety at the same time.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0005] The present invention provides a safety protection device for installing an arch frame under a tunnel's free face, including:

[0006] A construction table cover for clamping the top of the arch frame;

[0007] A lifting mechanism arranged at the lower end of the construction table cover for driving the construction table cover to move up and down;

[0008] A rotating mechanism arranged at the lower end of the lifting mechanism for supporting the lifting mechanism and driving the lifting mechanism to rotate horizontally;

[0009] An arch frame lateral adjustment mechanism arranged at the lower end of the rotating mechanism for supporting the rotating mechanism and driving the rotating mechanism to move laterally along the tunnel;

[0010] An arch frame longitudinal adjustment mechanism arranged at the lower end of the arch frame lateral adjustment mechanism for supporting the arch frame lateral adjustment mechanism and driving the arch frame lateral adjustment mechanism to move longitudinally along the tunnel;

[0011] A support frame arranged at the lower end of the arch frame longitudinal adjustment mechanism for supporting the arch frame longitudinal adjustment mechanism;

[0012] The lateral telescopic mechanism is respectively arranged on the lateral sides of the support frame and is used to push the lower part of the arch frame along the lateral direction of the tunnel;

[0013] The frame moving mechanism is arranged at the bottom of the support frame and is used to drive the support frame to move.

[0014] Furthermore, fixing bolts are sleeved on the opposite side walls of the construction table cover. The end of the fixing bolt extending out of the side wall is nested with a pressing plate, and the arch frame is clamped between the pressing plate and the side wall.

[0015] Furthermore, the lateral telescopic mechanism includes telescopic pipe sleeves, first electric telescopic components and flat connecting pipes. The telescopic pipe sleeves are arranged in an array on the longitudinal sides of the support frame. One end of each telescopic pipe sleeve is connected to the support frame, and the other end is hinged to the flat connecting pipe. One end of the first electric telescopic component is hinged to the telescopic pipe sleeve, and the other end is hinged to the flat connecting pipe, and is used to drive the flat connecting pipe to move laterally to push the arch frame.

[0016] Furthermore, the longitudinal adjustment mechanism of the arch frame includes longitudinal linear slide rails, longitudinal sliding sleeves, longitudinal pulleys and traction ropes. A pair of longitudinal linear slide rails are arranged horizontally and at intervals on the support frame. A pair of longitudinally spaced longitudinal sliding sleeves are slidably nested on each longitudinal linear slide rail. The lateral adjustment mechanism of the arch frame is arranged on the longitudinal sliding sleeves. The longitudinal pulley is connected to the lateral adjustment mechanism of the arch frame, and the traction rope winds around the longitudinal pulley and then extends to the edge of the support frame.

[0017] Furthermore, the lateral adjustment mechanism of the arch frame includes lateral linear slide rails, lateral sliding sleeves, third electric telescopic components and connecting rod frames. A pair of lateral linear slide rails are arranged longitudinally and at intervals on the longitudinal sliding sleeves. A pair of laterally spaced lateral sliding sleeves are slidably nested on each lateral linear slide rail. The lateral sliding sleeves are connected by the connecting rod frame. One end of the third electric telescopic component is hinged to one of the lateral linear slide rails, and the other end is hinged to the lateral sliding sleeve located on this lateral linear slide rail. The longitudinal pulley is connected to the lateral linear slide rail, and the rotating mechanism is arranged on the connecting rod frame.

[0018] Furthermore, the rotating mechanism includes a support disc, a rotating motor, a rotating gear and a toothed disc. The support disc and the rotating motor are both arranged on the connecting rod frame, and the rotating motor is located on the outer periphery of the support disc. The toothed disc is slidably arranged on the support disc. The rotating motor is connected to the rotating gear meshing with the toothed disc and is used to drive the toothed disc to rotate. The lifting mechanism is arranged on the toothed disc.

[0019] Furthermore, the lifting mechanism includes a second electric telescopic assembly and a support column. The second electric telescopic assembly is disposed on the toothed disc, and the support column is disposed at the upper end of the up-and-down telescopic assembly. A moving frame is disposed on the transverse sliding sleeve, and a positioning sleeve is disposed at the upper end of the moving frame. The support column is slidably nested in the positioning sleeve, and the end of the support column extending out of the positioning sleeve is connected to the construction table cover.

[0020] Furthermore, the support frame includes a gantry and a bottom beam. At least a pair of the gantries are disposed opposite to each other at intervals, and the lower ends of all the gantries are respectively connected by the bottom beam on the same side. The frame moving mechanism is distributed on the bottom beam; a laser locator for positioning the installation position of the arch frame and a ladder for climbing to the top thereof are disposed on the support frame.

[0021] Furthermore, the frame moving mechanism includes a driving wheel set, a speed reducer and a direction control assembly. The driving wheel set is connected to the lower end of the support frame. The speed reducer is disposed on the driving wheel set at one end of the support frame for driving the driving wheel set to move. The direction control assembly is disposed on the support frame and connected to the driving wheel set for controlling the direction of the driving wheel set.

[0022] The present invention also provides an arch frame installation method using the above-mentioned arch frame installation safety protection device under the tunnel free surface, including the following steps:

[0023] Step 1, installing the arch frame on the construction table cover;

[0024] Step 2, transporting the arch frame to the installation position in the tunnel through the frame moving mechanism;

[0025] Step, adjusting the positioning position of the arch frame to the installation section through the longitudinal adjustment mechanism and the transverse adjustment mechanism of the arch frame;

[0026] Step 3, adjusting the arch frame to be parallel to the installation section through the rotation mechanism;

[0027] Step 4, jacking up the arch frame through the lifting mechanism to fit with the top of the installation section;

[0028] Step 5, jacking up both sides of the lower part of the arch frame through the transverse telescopic mechanism to fit with both sides of the installation section;

[0029] Step 6, fixing the arch frame on the installation section and disassembling the arch frame on the construction table cover.

[0030] Due to the adoption of the above technical solutions, the present invention has the following advantages and effects:

[0031] (1) A safety protection device and method for installing an arch support under the tunnel's empty space according to the present invention achieve fine adjustment of the arch support's position through the cooperation of a lifting mechanism, a rotating mechanism, a transverse adjustment mechanism for the arch support, a longitudinal adjustment mechanism for the arch support, and a transverse telescopic mechanism. The device is moved through a frame moving mechanism, further reducing the labor intensity of arch support installation, improving the installation efficiency of the arch support, and ensuring the correct position and angle of the arch support in the tunnel through precise mechanical control, thereby improving the accuracy and stability of arch support installation.

[0032] (2) A safety protection device and method for installing an arch support under the tunnel's empty space according to the present invention pre-fixes the arch support in the construction table cover, and construction workers can stand inside the construction table cover to perform the installation operation of the arch support, avoiding falling objects from the top in the tunnel and ensuring high construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of the safety protection device for installing an arch support under the tunnel's empty space according to the present invention.

[0034] Figure 2 is Figure 1 a side view of

[0035] The reference numerals are as follows:

[0036] 1 - driving wheel, 2 - bracket, 3 - speed reducer, 4 - steering wheel, 5 - bottom beam, 6 - gantry, 7 - telescopic pipe sleeve, 8 - first electric telescopic component, 9 - flat connecting pipe, 10 - longitudinal linear slide rail, 11 - longitudinal sliding sleeve, 12 - longitudinal pulley, 13 - towing rope, 14 - transverse linear slide rail, 15 - transverse sliding sleeve, 16 - intermediate beam, 17 - support disk, 18 - rotating motor, 19 - rotating gear, 20 - toothed disk, 21 - second electric telescopic component, 22 - support column, 23 - positioning sleeve, 24 - moving frame, 25 - connecting rod frame, 26 - second limit plate, 27 - laser locator, 28 - channel, 29 - pressing plate, 30 - fixing bolt, 31 - arch support, 32 - construction table cover, 33 - guardrail, 34 - ladder, 35 - third electric telescopic component, 36 - first limit plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] The following will describe the embodiments of the present invention in detail with reference to the drawings to more clearly understand the purpose, features, and advantages of the present invention. It should be understood that the embodiments shown in the drawings do not limit the scope of the present invention, but only illustrate the essential spirit of the technical solution of the present invention.

[0038] As Figure 1 、 Figure 2As shown in the figure. A safety protection device for installing an arch frame under the tunnel's empty space includes a construction platform cover 32, a lifting mechanism, a rotating mechanism, a transverse adjustment mechanism for the arch frame, a longitudinal adjustment mechanism for the arch frame, a support frame, a transverse telescopic mechanism, and a frame moving mechanism, which are connected in sequence from top to bottom. The transverse ends of the construction platform cover 32 are used to clamp and fix the two sides of the top of the arch frame 31. The lifting mechanism is arranged at the lower end of the construction platform cover 32 and is used to drive the construction platform cover 32 to move up and down to adjust the height position of the arch frame 31 in the tunnel. The rotating mechanism is arranged at the lower end of the lifting mechanism and is used to support the lifting mechanism and drive the lifting mechanism to rotate horizontally. Through the rotating mechanism, the angle of the arch frame 31 can be adjusted to be parallel to the arch frame installation section in the tunnel. The transverse adjustment mechanism for the arch frame is arranged at the lower end of the rotating mechanism and is used to support the rotating mechanism and drive the rotating mechanism to move horizontally along the tunnel. The transverse adjustment mechanism for the arch frame can adjust the transverse position of the arch frame 31 in the installation section. The longitudinal adjustment mechanism for the arch frame is arranged at the lower end of the transverse adjustment mechanism for the arch frame and is used to support the transverse adjustment mechanism for the arch frame and drive the transverse adjustment mechanism for the arch frame to move longitudinally along the tunnel. The longitudinal adjustment mechanism for the arch frame can adjust the transverse position of the arch frame 31 in the installation section. The support frame is arranged at the lower end of the longitudinal adjustment mechanism for the arch frame and is used to support the longitudinal adjustment mechanism for the arch frame. The support frame serves as the support body of the entire device. The transverse telescopic mechanisms are respectively arranged on the two transverse sides of the support frame and are used to move telescopically horizontally along the tunnel to push the two sides of the lower part of the arch frame 31 to move, so that the two sides of the lower part of the arch frame 31 are attached to the two sides of the installation section of the tunnel. The frame moving mechanism is arranged at the bottom of the support frame and is used to drive the support frame to move. The frame moving mechanism can drive the entire device to move on the ground of the tunnel.

[0039] During use, the top of the arch frame 31 is temporarily fixed and installed on the construction platform cover 32, and is moved to the installation position in the tunnel through the frame moving mechanism. The position of the arch frame 31 is adjusted to be consistent with the installation section through the cooperation of the rotating mechanism, the transverse adjustment mechanism for the arch frame, and the longitudinal adjustment mechanism for the arch frame. Then, the top and the two sides of the lower part of the arch frame 31 are respectively jacked up and attached to the installation section through the telescopic movement of the lifting mechanism and the transverse telescopic mechanism. Finally, the arch frame 31 is fixed on the installation section, and the arch frame fixing points of the construction platform cover 32 are disassembled to complete the installation of the arch frame 31.

[0040] Furthermore, fixing bolts 30 are sleeved on the opposite side walls of the construction platform cover 32. The ends of the fixing bolts 30 extending out of the side walls are nested with pressing plates 29, and the arch frame 31 is clamped between the pressing plates 29 and the side walls.

[0041] Specifically, the upper end of the construction table cover 32 is closed, construction windows are arranged in an array on the outer periphery, and a support plate is provided inside the lower end. The two laterally opposite ends of the construction table cover 32 have side walls with arc-shaped surfaces, and the arc-shaped surfaces of the side walls are generally consistent with the arc of the installation section of the tunnel. Opposite channels 28 are provided on both of the pair of side walls. Both ends of the fixing bolt 30 pass through the channels 28 on both sides and extend out of the channels 28. Pressure plates 29 are screwed to both ends of the fixing bolt 30. The arch frame 31 is embedded between the pressure plates 29 and the side walls. The arch frame 31 can be clamped and fixed or loosened and disassembled by adjusting the position of the pressure plate 29 on the fixing bolt 30.

[0042] Furthermore, the support frame includes gantry frames 6 and bottom beams 5. At least a pair of gantry frames 6 are arranged at intervals relatively. The lower ends of all the gantry frames 6 are connected by the bottom beams 5 on the same side respectively, and the frame moving mechanisms are distributed on the bottom beams 5. A laser locator 27 for positioning the installation position of the arch frame 31 and a ladder 34 for climbing to the top thereof are provided on the support frame.

[0043] Specifically, in the present invention, three gantry frames 6 are arranged at intervals along the longitudinal direction of the tunnel in sequence. The bottoms on the same side of each gantry frame 6 are connected by the bottom beam 5, and the middle parts on the same side of the gantry frames 6 are connected by the intermediate beam 16. The frame moving mechanisms are distributed on the bottoms at both ends of the bottom beam 5.

[0044] Furthermore, the frame moving mechanism includes a driving wheel set, a speed reducer 3 and a direction control component. The driving wheel set is connected to the lower end of the support frame. The speed reducer 3 is arranged on the driving wheel set at one end of the support frame for driving the driving wheel set to move. The direction control component is arranged on the support frame and connected to the driving wheel set for controlling the direction of the driving wheel set.

[0045] Specifically, 4 driving wheel sets are distributed on the bottom of the support frame. Each driving wheel set includes a bracket 2 and a driving wheel 1. The upper end of the bracket 2 is slidably connected to the lower end of the bottom beam 5. The driving wheel 1 is slidably nested in the bracket 2 through a wheel shaft. The speed reducer 3 is arranged on one side of the outer periphery of the bracket 2. A driving gear is sleeved on the output end of the speed reducer 3, and a transmission gear is sleeved on one end of the wheel shaft. The driving gear and the transmission gear are meshed, and the reducer 3 drives the driving wheel 1 to rotate through the meshing of the driving gear and the transmission gear.

[0046] The direction control component is arranged on the bottom beam 5 at the upper end of one of the driving wheel sets. The direction control component includes a steering wheel 4 and a steering shaft. The steering wheel 4 is slidably connected to the bottom beam 5 through the steering shaft. The lower end of the steering shaft is connected to the upper end of the bracket 2. The bracket 2 is slidably nested on the bottom beam 5, and the direction of the driving wheel set is controlled through the steering wheel 4.

[0047] Furthermore, the lateral telescopic mechanism includes telescopic pipe sleeves 7, first electric telescopic assemblies 8, and connecting pipes 9. Telescopic pipe sleeves 7 are arranged in an array on both longitudinal sides of the support frame. The telescopic ends of the telescopic pipe sleeves 7 are hinged to the connecting pipes 9. One end of the first electric telescopic assembly 8 is hinged to the telescopic pipe sleeve 7, and the other end is hinged to the connecting pipe 9, which is used to drive the connecting pipe 9 to move laterally to push the arch frame 31.

[0048] Specifically, each telescopic pipe sleeve 7 is composed of a fixed sleeve and a telescopic rod. The telescopic rod is slidably nested in the fixed sleeve. Two rows of telescopic pipe sleeves 7 are arranged in an array at upper and lower intervals on both lateral sides of each gantry 6. Three telescopic pipe sleeves 7 are arranged at longitudinal intervals in each row. One end of the fixed sleeve of each row is connected to the gantry 6, and one end of the telescopic rod of each row is connected to the connecting pipe 9. One end of each fixed sleeve is hinged to the fixed end of the first electric telescopic assembly 8, and the telescopic end of the first electric telescopic assembly 8 is hinged to the connecting pipe 9. The connecting pipe 9 on both sides of the support frame can drive the connecting pipe 9 to expand and contract laterally along the support frame, and the lower sides of both sides of the arch frame 31 are pushed by the connecting pipes 9 on both sides of the support frame to move and fit the installation section in the tunnel.

[0049] Furthermore, the longitudinal adjustment mechanism of the arch frame includes longitudinal linear slide rails 10, longitudinal sliding sleeves 11, longitudinal pulleys 12, and a towing rope 13. A pair of longitudinal linear slide rails 10 are arranged horizontally and spaced apart on the support frame. A pair of longitudinally spaced longitudinal sliding sleeves 11 are slidably nested on each longitudinal linear slide rail 10. The lateral adjustment mechanism of the arch frame is arranged on the longitudinal sliding sleeves 11. The longitudinal pulley 12 is connected to the lateral adjustment mechanism of the arch frame. The towing rope 13 extends to the edge of the support frame after winding around the longitudinal pulley 12.

[0050] Specifically, the longitudinal linear slide rails 10 are arranged horizontally and spaced apart at the upper end of the gantry 6. A pair of longitudinal pulleys 12 are arranged horizontally and spaced apart on the lateral adjustment mechanism of the arch frame. One end of the towing rope 13 is fixed to one side of the end of the gantry 6, and the other end of the towing rope 13 is wound around the longitudinal pulley 12. The lateral adjustment mechanism of the arch frame is towed by the towing rope 13 to move longitudinally along the longitudinal linear slide rail 10. First limit plates 36 are arranged at both ends of the longitudinal linear slide rail 10 to limit the longitudinal sliding sleeve 11 and prevent the longitudinal sliding sleeve 11 from sliding out of the longitudinal linear slide rail 10.

[0051] Furthermore, the arch support lateral adjustment mechanism includes a lateral linear slide rail 14, a lateral sliding sleeve 15, a third electric telescopic component 35, and a connecting rod frame 25. A pair of lateral linear slide rails 14 are longitudinally arranged at intervals on the longitudinal sliding sleeve 11. A pair of laterally spaced lateral sliding sleeves 15 are slidably nested on each lateral linear slide rail 14. The lateral sliding sleeves 15 are connected by a connecting rod frame 25, and a rotating mechanism is arranged on the connecting rod frame 25. One end of the third electric telescopic component 35 is hinged to one of the lateral linear slide rails 14, and the other end is hinged to the lateral sliding sleeve 15 located on this lateral linear slide rail. The longitudinal pulley 12 is connected to the lateral linear slide rail 14. A moving frame 24 is also arranged on the lateral sliding sleeve 14. The rotating mechanism and the lifting mechanism are located at the center of the moving frame 24.

[0052] Specifically, the moving frame 24 is of a cuboid frame structure with four support legs. The lower ends of the support legs are respectively fixed on the four lateral sliding sleeves 15. The upper end of the moving frame 24 is connected with a positioning sleeve 23 of the axial limit lifting mechanism. The connecting rod frame 25 is composed of a pair of lateral connecting rods and a pair of longitudinal connecting rods. A pair of longitudinally adjacent lateral sliding sleeves 15 at intervals are connected by longitudinal connecting rods. The pair of longitudinal connecting rods are connected by a pair of laterally arranged lateral connecting rods at intervals. The pair of lateral connecting rods and the pair of longitudinal connecting rods are connected to form a "well" - shaped structure. The fixed end of the third electric telescopic component 35 is hinged to the lateral linear slide rail 14, and the telescopic end of the third electric telescopic component 35 is hinged to one of the lateral sliding sleeves 15. The telescopic movement of the third electric telescopic component 35 drives the lateral sliding sleeve 15 to move along the lateral linear slide rail 14, realizing the lateral movement of the rotating mechanism and the moving frame 24. Second limit plates 26 are arranged at both ends of the lateral linear slide rail 14 for limiting the lateral sliding sleeve 15.

[0053] Furthermore, the rotating mechanism includes a support disk 17, a rotating motor 18, a rotating gear 19, and a toothed disk 20. The support disk 17 and the rotating motor 18 are both arranged on the connecting rod frame 25, and the rotating motor 18 is located on the outer periphery of the support disk 17. The toothed disk 20 is slidably arranged on the support disk 17. The rotating motor 18 is connected with a rotating gear 19 meshing with the toothed disk 20 for driving the toothed disk 20 to rotate. The lifting mechanism is arranged on the toothed disk 20.

[0054] Specifically, the rotating motor 18 is fixed on the lateral connecting rod of the connecting rod frame 25. The support disk 17 is fixed on the pair of longitudinal connecting rods of the connecting rod frame 25 and is located at the center of the moving frame 24. A rotating shaft is arranged at the center of the support disk 17. The toothed disk 20 is slidably nested on the rotating shaft. The outer periphery of the toothed disk 20 meshes with the rotating gear 19. The rotating gear 19 is nested on the output end of the rotating motor 18. The lifting mechanism is arranged at the upper center of the toothed disk 20. The rotating motor 18 drives the toothed disk 20 to rotate through the rotating gear 19, driving the axial rotation of the lifting mechanism.

[0055] Furthermore, the lifting mechanism includes a second electric telescopic component 21 and a support column 22. The second electric telescopic component 21 is arranged on the gear disk 20, and the support column 22 is arranged at the upper end of the second electric telescopic component 21.

[0056] Specifically, the support column 22 is slidably nested in the positioning sleeve 23 and axially limited by the positioning sleeve 23. The support column 22 extends out of the upper end of the positioning sleeve 23, and the support plate of the construction table cover 32 is fixedly connected to the upper end of the support column 22. The up-and-down telescopic movement of the second electric telescopic component 21 drives the support column 22 to move up and down along the positioning sleeve 23 to adjust the height position of the construction table cover 32.

[0057] Furthermore, a laser locator 27 for positioning the installation position of the arch frame 31 and a ladder 34 for climbing to the top thereof are arranged on the support frame.

[0058] Specifically, a pair of laser locators 27 are arranged at the centers of the upper ends of the transverse sides of the gantry 5. The ladders 34 are respectively connected to the lower ends of the fixed sleeves of the telescopic pipe sleeves 7. The ladders 34 can be divided into two layers up and down. The construction personnel can easily go up and down the device through the ladders 34 for construction. For the safety of climbing, guardrails 33 are arranged on both sides of the ladders 34 and the outer periphery of the upper end of the support frame.

[0059] Furthermore, the second electric telescopic component 21, the first electric telescopic component 8 and the third electric telescopic component 35 are hydraulic cylinders or electric telescopic push rods. When they are hydraulic cylinders, a hydraulic tank is arranged on the support frame, and the hydraulic tank is connected to each hydraulic cylinder to provide power for it.

[0060] Furthermore, in order to realize the control of the whole device, a controller is installed on the support frame. The controller is electrically connected to electric components such as the first electric telescopic component 8, the second electric telescopic component 21, the third electric telescopic component 35, the rotary motor 18, the hydraulic tank and the speed reducer 3. The controller can control the actions of each component through a wireless remote controller.

[0061] An installation method for an arch frame under a tunnel free face of the present invention uses the tunnel arch frame installation safety protection device of the present invention. The installation method includes the following steps:

[0062] Step 1, after the initial spraying of the tunnel excavation section, a part of the construction personnel stand in the construction table cover 32 in advance and install the arch frame 31 on the construction table cover 32. During installation, the two sides of the top of the arch frame 31 are placed between the two side walls and the pressing plate 29 of the construction table cover 32 and temporarily fixed by fixing bolts 30. The two sides of the lower part of the arch frame 31 are located on the outer peripheries of the transverse sides of the support frame.

[0063] Step 2, start the speed reducer 3 of the frame moving mechanism, and control the driving wheels 1 through the steering wheel 4 of the direction control component to transport the whole device and the arch frame 31 to the installation section in the tunnel to the position to be installed.

[0064] Step 3: Adjust the positioning position of the arch frame 31 to the installation section through the longitudinal adjustment mechanism and transverse adjustment mechanism of the arch frame.

[0065] Specifically, turn on the laser locator 27 to accurately position the installation section position of the arch frame 31 in the tunnel. Then, when pulling the longitudinal pulley 12 through the towing rope 13 to drive the longitudinal sliding of the arch frame 31 to the longitudinal positioning position of the installation section, stop pulling. When starting the third electric telescopic component 35 of the transverse adjustment mechanism of the arch frame to horizontally telescopically move and adjust the arch frame 31 to the transverse positioning position of the installation section, turn off the third electric telescopic component 35.

[0066] Step 4: Start the rotation motor 18 of the rotation mechanism to drive the gear disc 20 to rotate and adjust the installation angle of the arch frame 31. When the arch frame 31 is parallel to the installation section, turn off the rotation motor.

[0067] Step 5: Start the second electric telescopic component 21 of the lifting mechanism to drive the support column 22 to move upward. The support column 22 jacks up the construction table cover 32 so that the top of the arch frame 31 fits the top of the installation section. When this happens, turn off the second electric telescopic component 21.

[0068] Step 6: Start the first electric telescopic component 8 of the transverse telescopic mechanism to telescopically move and push the flat connecting pipe 9 to respectively press against the lower sides of both sides of the arch frame 31 and move towards the installation sections on both sides of the tunnel. When both sides of the arch frame 31 fit the two sides of the installation section, turn off the first electric telescopic component 8.

[0069] Step 7: Some construction workers fix the top of the arch frame 31 to the installation section on the construction table cover 32, and some other construction workers fix the lower sides of both sides of the arch frame 31 to the installation section on the tunnel ground. Then, remove the pressure plates 29 on both sides of the construction table cover 32 and loosen the top of the arch frame 31 to complete the fixed connection between the arch frame 31 and the installation section.

[0070] Finally, it should be noted that the above 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 with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A safety protection device for installing an arch frame under the tunnel, characterized in that: include: A construction platform cover (32) is used to clamp the top of the arch frame (31); A lifting mechanism, arranged at the lower end of the construction platform cover (32), used for driving the construction platform cover (32) to move up and down; A rotating mechanism, arranged at the lower end of the lifting mechanism, for supporting the lifting mechanism and driving the lifting mechanism to rotate horizontally; An arch frame transverse adjustment mechanism, arranged at the lower end of the rotating mechanism, for supporting the rotating mechanism and driving the rotating mechanism to move transversely along the tunnel; An arch frame longitudinal adjustment mechanism is arranged at the lower end of the arch frame transverse adjustment mechanism, and is used to support the arch frame transverse adjustment mechanism and drive the arch frame transverse adjustment mechanism to move along the longitudinal direction of the tunnel; A support frame, arranged at the lower end of the arch frame longitudinal adjustment mechanism, and used to support the arch frame longitudinal adjustment mechanism; Transverse telescopic mechanisms are respectively arranged on both lateral sides of the support frame and are used to push the lower part of the arch frame (31) by telescopic movement along the lateral direction of the tunnel; The frame moving mechanism is arranged at the bottom of the supporting frame and is used for driving the supporting frame to move.

2. The tunnel overhead arch installation safety protection device according to claim 1 is characterized in that: Fixing bolts (30) are sleeved on the two opposite side walls of the construction platform cover (32), and the ends of the fixing bolts (30) extending out of the side walls are embedded with pressure plates (29), and the arch frame (31) is clamped between the pressure plates (29) and the side walls.

3. The tunnel overhead arch installation safety protection device according to claim 1 or 2 is characterized in that: The transverse telescopic mechanism comprises a telescopic tube sleeve (7), a first electric telescopic assembly (8) and a flat tube (9); the telescopic tube sleeves (7) are arranged in an array on both longitudinal sides of the support frame; one end of each telescopic tube sleeve (7) is connected to the support frame, and the other end is hinged to the flat tube (9); one end of the first electric telescopic assembly (8) is hinged to the telescopic tube sleeve (7), and the other end is hinged to the flat tube (9), so as to drive the flat tube (9) to push the arch frame (31) laterally.

4. The tunnel overhead arch installation safety protection device according to claim 3 is characterized in that: The arch frame longitudinal adjustment mechanism comprises a longitudinal linear slide rail (10), a longitudinal sliding sleeve (11), a longitudinal pulley (12) and a traction rope (13); a pair of the longitudinal linear slide rails (10) are arranged on the support frame at a transverse interval; a pair of longitudinally spaced longitudinal slide sleeves (11) are slidably nested on each of the longitudinal linear slide rails (10); the arch frame transverse adjustment mechanism is arranged on the longitudinal sliding sleeve (11); the longitudinal pulley (12) is connected to the arch frame transverse adjustment mechanism; and the traction rope (13) is wound around the longitudinal pulley (12) and then extends to the edge of the support frame.

5. The safety protection device for installing a tunnel arch frame under the sky according to claim 4 is characterized in that: The arch frame transverse adjustment mechanism comprises a transverse linear slide rail (14), a transverse sliding sleeve (15), a third electric telescopic assembly (35) and a connecting rod frame (25); a pair of the transverse linear slide rails (14) are longitudinally spaced apart and arranged on the longitudinal sliding sleeve (11); a pair of transversely spaced transverse sliding sleeves (15) are slidably nested on each of the transverse linear slide rails (14); the transverse sliding sleeves (15) are connected via the connecting rod frame (25); one end of the third electric telescopic assembly (35) is hinged to one of the transverse linear slide rails (14), and the other end is hinged to the transverse sliding sleeve (15) located on the transverse linear slide rail (14); the longitudinal pulley (12) is connected to the transverse linear slide rail (14); and the rotating mechanism is arranged on the connecting rod frame (25).

6. The safety protection device for installing a tunnel arch frame under the sky according to claim 5 is characterized in that: The rotating mechanism comprises a supporting disk (17), a rotating motor (18), a rotating gear (19) and a toothed disk (20); the supporting disk (17) and the rotating motor (18) are both arranged on the connecting rod frame (25), and the rotating motor (18) is located on the outer periphery of the supporting disk (17); the toothed disk (20) is slidably arranged on the supporting disk (17); the rotating motor (18) is connected to the rotating gear (19) meshed with the toothed disk (20) to drive the toothed disk (20) to rotate; and the lifting mechanism is arranged on the toothed disk (20).

7. The safety protection device for installing a tunnel arch frame in the air according to claim 6 is characterized in that: The lifting mechanism comprises a second electric telescopic component (21) and a support column (22), wherein the second electric telescopic component (21) is arranged on the toothed disc (20), and the support column (22) is arranged at the upper end of the second electric telescopic component (21). A moving frame (24) is arranged on the transverse sliding sleeve (15), and a positioning sleeve (23) is arranged at the upper end of the moving frame (24). The support column (22) is slidably nested in the positioning sleeve (23), and the end of the support column (22) extending out of the positioning sleeve (23) is connected to the construction platform cover (32).

8. The tunnel overhead arch installation safety protection device according to claim 7 is characterized in that: The support frame comprises a door frame (6) and a bottom beam (5), at least one pair of the door frames (6) are arranged at a relative interval, the lower ends of all the door frames (6) are connected on the same side through the bottom beam (5), and the frame moving mechanism is distributed on the bottom beam (5); the support frame is provided with a laser locator (27) for locating the installation position of the arch frame (31) and a ladder (34) for climbing to the top thereof.

9. The tunnel overhead arch installation safety protection device according to claim 1 is characterized in that: The frame moving mechanism comprises a driving wheel group, a reducer (3) and a direction control component, wherein the driving wheel group is connected to the lower end of the supporting frame, the reducer (3) is arranged on the driving wheel group at one end of the supporting frame and is used to drive the driving wheel group to move, and the direction control component is arranged on the supporting frame and is connected to the driving wheel group and is used to control the direction of the driving wheel group.

10. A method for installing an arch frame using a tunnel overhead arch frame installation safety protection device as described in any one of claims 1 to 9, characterized in that: The steps include: Step 1, installing the arch frame (31) on the construction platform cover (32); Step 2, transporting the arch frame (31) to a location to be installed in the tunnel by means of a frame moving mechanism; Step 3, adjusting the arch frame (31) to the positioning position of the installation section through the arch frame longitudinal adjustment mechanism and the arch frame transverse adjustment mechanism; Step 4, adjusting the arch frame (31) to be parallel to the installation section through the rotating mechanism; Step 5, lift the arch frame (31) by the lifting mechanism to fit it with the top of the installation section; Step 6, using the lateral telescopic mechanism to lift up the two sides of the lower part of the arch frame (31) to fit the two sides of the installation section; Step 7, fix the arch frame (31) on the installation section, and remove the arch frame (31) on the construction platform cover (32).

Images