A safety supporting device for tunnel engineering

Abstract

The application discloses a safety supporting device for tunnel engineering, which comprises a base frame capable of moving along the tunnel direction, a side position support table and an intermediate through hole are arranged on the base frame, the side position support table is arranged on the two sides of the intermediate through hole, a longitudinal feeding port in communication with the intermediate through hole is arranged on the top plane of the base frame, an adjusting strip port extending to the side position support table is arranged at the longitudinal feeding port, a support table capable of adjusting the horizontal height is arranged in the intermediate through hole, a support arm is connected to the support table through a hinge seat, and an arc-shaped support plate is detachably arranged on the upper end of the support arm; compared with the prior art, the safety supporting device has the beneficial effects that: in the initial supporting construction of the tunnel engineering, the device can be placed in the tunnel of the initial excavation section, when the side wall is constructed, the arc-shaped support plate is adjusted to be located at the vault position in the tunnel through the support arm, and the safety of the tunnel construction is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of tunnel construction equipment, and particularly relates to a safety support device for initial construction in tunnel engineering. BACKGROUND

[0002] In the process of tunnel engineering construction, the segment tunnel opened by digging needs to be initially supported, dangerous stones in the tunnel need to be removed, and then concrete is initially sprayed. After the initial spraying, drilling and grouting anchor rods are needed, grouting is carried out through the grouting anchor rods, and then a steel mesh and a steel frame are installed. After the steel frame is installed, concrete is re-sprayed. In the process of installing the steel frame, the steel frame needs to be assembled and installed in segments. In the prior art, in order not to affect the assembly and installation of the steel frame, a safety auxiliary device cannot be used during construction. However, at this time, there is still a risk of local stone falling and collapse in the tunnel, and therefore an urgent need exists for a support device that can not affect the assembly and installation of the steel frame. SUMMARY

[0003] The present application aims to provide a safety support device that can improve construction safety and not affect construction efficiency in the initial support construction of tunnel engineering.

[0004] To achieve the above object, the application adopts the following technical scheme, a safety supporting device for tunnel engineering, comprising a base frame movable along the tunnel direction, a side support table and an intermediate opening are arranged on the base frame, the side support table is located on both sides of the intermediate opening, a longitudinal feeding port in communication with the intermediate opening is arranged on the top plane of the base frame, an adjusting strip port extending to the side support table is arranged at the longitudinal feeding port, a support table capable of adjusting the horizontal height is arranged in the intermediate opening, a support arm is connected to the support table through a hinge seat, the hinge seat is located on the middle division line of the support table, the support arm has a telescopic structure, the support arm is movable in the adjusting strip port, an arc-shaped support plate is detachably mounted on the upper end of the support arm, the plane of the arc-shaped support plate is arranged perpendicularly to the support table, a limiting part is connected to the plane of the arc-shaped support plate, the limiting part comprises an arc-shaped curved sliding plate, an arc-shaped outer baffle is fixed at the side edge of the curved sliding plate, a butt joint port is arranged on the outer baffle, the outer baffle is arranged in parallel with the arc-shaped support plate, an inclined guide plate is detachably mounted at the end of the curved sliding plate, a middle gap is arranged at the free end of the inclined guide plate, a material placing tray is arranged above the support table, a material placing groove and a rotating frame located in the material placing groove are arranged on the material placing tray, a flat frame cylinder is arranged at the opening of the material placing groove, the rotating frame comprises a driving shaft and a support arm fixed on the driving shaft, a bidirectional driver is connected to the driving shaft, the support arm extends in the radial direction of the driving shaft, a material supporting frame capable of rotating and adjusting is connected to the end of the support arm, the material supporting frame drives the steel frame to be installed to move, the material supporting frame comprises a cap head connected to the end of the support arm, a supporting arm and a pushing arm are connected to one end of the cap head, a bottom supporting rod is fixed at the end of the supporting arm, a pressure plate is fixed at the end of the pushing arm, an end position supporting and blocking part parallel to the pushing arm is arranged on the pressure plate, the end position supporting and blocking part can pass through the middle gap on the inclined guide plate, the supporting arm, the pushing arm and the cap head form a Y-shaped structure.

[0005] Further, a top part and a positioning strip port are arranged on the limiting part, the top part and the positioning strip port are arranged on the curved sliding plate and the outer baffle respectively, the top part comprises a top screw rod capable of penetrating through the curved sliding plate and screwed to the curved sliding plate, the top screw rod is arranged along the length direction of the curved sliding plate.

[0006] Further, the material placing groove is connected with a feeding channel, a supporting feeding part located below the feeding channel is arranged in the material placing groove, the supporting feeding part controls the steel frame to be installed in the material placing groove to move upward.

[0007] Further, the supporting feeding part comprises a semicircular bent supporting plate, a lifting device is connected between the supporting plate and the bottom surface of the material placing groove.

[0008] Further, the both ends of the bottom supporting rod are provided with movable and resettable anti-disengagement rods, the anti-disengagement rods are located on both sides of the steel frame to be installed.

[0009] Further, the anti-falling rod comprises a straight rod body and a ring-shaped disc, the ring-shaped disc is fixed at the lower end of the straight rod body and is sleeved on the bottom support rod, the ring-shaped disc is connected with an end position disc through a torsion spring, and the end position disc is fixed at two ends of the bottom support rod.

[0010] Further, the corner end of the material placing tray is fixed with a vertically extending sliding rod, the sliding rod is matched with a through hole arranged on the support table, the sliding rod passes through the through hole, and the connection between the material placing tray and the support table is realized by the adjusting arm.

[0011] Further, an external thread is arranged on the adjusting arm, the adjusting arm is arranged through the support table, an insertion shaft is fixed at the upper end of the adjusting arm, a horizontal tray is fixed on the insertion shaft, the insertion shaft is matched with a blind hole arranged at the center position of the lower surface of the material placing tray, and the material placing tray is lifted and lowered when the adjusting arm rotates.

[0012] Compared with the prior art, the beneficial effects of the tunnel construction device are as follows: in the initial support construction of the tunnel engineering, the device can be placed in the tunnel of the initial excavation section, when the side wall is constructed, the arc-shaped support plate is located at the position of the tunnel vault through the support arm, and the arc-shaped support plate is abutted against the position of the tunnel vault after the support arm is elongated, at this time, the support force can be applied to the vault to avoid the collapse of the position, at this time, the net rack and the steel frame can be installed at the position of the side wall, then the arc-shaped support plate is moved to the positions of the two sides of the tunnel through the overturning movement of the support arm, at this time, the construction of the vault position can be carried out, and therefore the safety of the construction in the tunnel is greatly improved.

[0013] When the steel frame is installed, the steel frame is arranged in the material placing groove, then the end position supporting part pushes and supports one end of the steel frame through the rotation of the rotating frame, at this time, the bottom support rod at the end of the supporting arm is abutted against the inner arc surface of the steel frame, and when the steel frame is moved to the position above the driving shaft under the driving of the rotating frame, one end of the steel frame is arranged on the bottom support rod, the other end of the steel frame is supported by the end position supporting part, and then the steel frame is continuously moved, the end of the steel frame supported by the bottom support rod is in contact with the inclined guide plate, then the supporting arm and the pushing arm on the rotating frame are adjusted, and the rotating frame is reversely rotated, so that the installation of the steel frame at the position of the side wall in the tunnel is completed, and finally the installation of the steel frame at the position of the vault is completed, compared with the installation of the steel frame by manpower in the prior art, the construction efficiency is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a front view structural schematic diagram of the present application;

[0015] Figure 2 It is a base position frame structural schematic diagram of the present application;

[0016] Figure 3 It is a support arm and support table connection schematic diagram of the present application;

[0017] Figure 4 Fig. 4 is a schematic view of the connecting profile of the limiting part and the arc-shaped supporting plate of the present application;

[0018] Figure 5 Fig. 5 is a schematic view of the cooperation between the material placing groove and the rotating frame of the present application;

[0019] Figure 6 Fig. 6 is a schematic view of the inclined guide plate structure of the present application;

[0020] Figure 7 Fig. 7 is a schematic view of the connection between the top part and the curved sliding supporting plate of the present application;

[0021] Figure 8 Fig. 8 is a schematic view of the connection between the bottom supporting rod and the anti-falling rod of the present application;

[0022] Figure 9 Fig. 9 is a schematic view of the connection between the material placing tray and the supporting table of the present application;

[0023] Figure 10 Fig. 10 is a schematic view of the front view profile of the material placing tray of the improved scheme of the present application;

[0024] Figure 11 Fig. 11 is a schematic view of the side view profile structure of the material placing tray of the improved scheme of the present application;

[0025] 1-base frame, 2-traveling wheel, 3-positioning arm, 4-side supporting table, 5-intermediate through hole, 6-longitudinal feeding port, 7-adjusting strip port, 8-supporting table, 9-adjusting mechanism, 10-inclined supporting rod, 11-hinge seat, 12-supporting arm, 13-arc-shaped arm, 14-straight arm, 15-arc-shaped supporting plate, 16-curved sliding supporting plate, 17-outer baffle, 18-butting port, 19-inclined guide plate, 20-intermediate gap, 21-directional supporting arm, 22-material placing tray, 23-material placing groove, 24-rotating frame, 25-flat frame cylinder, 26-driving shaft, 27-branch arm, 28-cap head, 29-supporting arm, 30-pushing arm, 31-bottom supporting rod, 32-pressing disc, 33-end position supporting stop part, 34-positioning strip port, 35-top position screw rod, 36-anti-falling rod, 37-straight rod body, 38-ring disc, 39-torsion spring, 40-end position disc, 41-sliding rod, 42-adjusting arm, 43-inserting shaft, 44-horizontal tray, 45-supporting plate, 46-lifting device. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0027] Referring to Figures 1 to 6The utility model discloses a tunnel engineering safety support device, including the base position frame 1 of tunnel trend movement, the bottom surface of base position frame 1 is provided with walking wheel 2 and retractable positioning arm 3, when positioning arm 3 elongation makes the end top ground, realize the positioning of base position frame 1, when base position frame 1 is difficult to move, base position frame 1 is provided with side position support platform 4 and intermediate aperture 5, and side position support platform 4 is located the both sides of intermediate aperture 5, and side position support platform 4 can provide the construction convenience for worker, the top plane of base position frame 1 is provided with the longitudinal feedway 6 of intercommunication with intermediate aperture 5, and the longitudinal feedway 6 is provided with the adjustment strip mouth 7 of extending to side position support platform 4, and the inside of intermediate aperture 5 is provided with the support platform 8 of adjustable horizontal height, and the below of support platform 8 is provided with the adjustment mechanism 9 of retractable longitudinally, and the lower end of adjustment mechanism is fixed with the bottom surface of intermediate aperture 5 on base position frame 1, and the upper end of adjustment mechanism 9 is fixed with several inclined struts 10, and several inclined struts 10 are arranged around adjustment mechanism 9, and several inclined struts 10 form claw structure, and adjustment mechanism 9 can be hydraulic lift cylinder, and also can choose the electric push rod of retractable longitudinally, and adjustment mechanism 9 can control the horizontal height of support platform 8, and support platform 8 is connected with support arm 12 through hinged seat 11, and support arm 12 includes arc arm 13 and straight arm 14, and one end of arc arm 13 is fixed with the lower end of straight arm 14, and the other end of arc arm 13 is hinged with hinged seat 11, and hinged seat 11 is located on the intermediate bisecting line of support platform 8, and support arm 12 has telescopic structure, and support arm 12 can move in adjustment strip mouth 7, and the upper end of support arm 12 is detachably installed with arc support plate 15, and the plane of arc support plate 15 is vertically arranged with support platform 8, and can select to support the middle position or side of tunnel vault through arc support plate 15, before supporting vault through arc support plate 15, the central position of hinged seat 11 is adjusted to coincide with the arc center of vault, after supporting vault through arc support plate 15, steel frame can be assembled and installed, specifically, the plane of arc support plate 15 is connected with limiting part, and limiting part includes curved sliding plate 16 of arc shape, and the curved surface of curved sliding plate 16 is vertically arranged with the plane of arc support plate 15, and arc-shaped outer baffle 17 is fixed at the side of curved sliding plate 15, and butt joint 18 is arranged on outer baffle 17, and outer baffle 17 is parallelly arranged with arc support plate 15, since steel frame needs to be assembled in sections, so arc-shaped sectional steel frame can be moved in limiting part to butt joint a plurality of steel frames, and slanted guide plate 19 is detachably installed at the end of curved sliding plate 16, and intermediate gap 20 is arranged at the free end of slanted guide plate 19, and slanted guide plate 19 is hinged with the end of curved sliding plate 16, and connecting between slanted guide plate 19 and the end of curved sliding plate 16 is directional structure, and directional structure includes directional support arm 21 fixed on the lower surface of slanted guide plate 19, and the free end of directional support arm 21 abuts on the lower surface of curved sliding plate 16, at this time, slanted guide plate 19 can turn up, but cannot turn down, before moving sectional steel frame in limiting part, the above of support platform 8 is provided with material placing tray 22,The material placing tray 22 is provided with a material placing groove 23 and a rotating frame 24 located in the material placing groove 23, the material placing groove 23 is located on the material placing tray 22 near one end of the hinged seat, the segment steel frame is placed in the material placing groove 23, the bottom surface of the material placing space in the material placing groove 23 is arc-shaped, the material placing groove 23 is provided with a flat frame tube 25 at the opening, and the rotating frame 24 comprises a driving shaft 26 and a supporting arm 27 fixed on the driving shaft 26, the supporting arm 27 is located in the material placing groove 23, the driving shaft 26 is connected with a bidirectional driver, the bidirectional driver can be fixed on the material placing tray 22, the supporting arm 27 extends in the radial direction of the driving shaft 26, the end of the supporting arm 27 is connected with a rotatable adjusting material supporting frame, the material supporting frame drives the steel frame to be installed to move, specifically, the material supporting frame comprises a cap head 28 connected to the end of the supporting arm 27, one end of the cap head 28 is connected with a supporting arm 29 and a pushing arm 30, the end of the supporting arm 29 is fixed with a bottom supporting rod 31, the end of the pushing arm 30 is fixed with a pressing disc 32, the pressing disc 32 is provided with an end position supporting and blocking part 33 parallel to the pushing arm 30, the end position supporting and blocking part 33 is a rod body or a plate body, after the segment steel frame is located in the material placing groove 23, the supporting arm 29 and the pushing arm 30 move into the material placing groove 23 along with the supporting arm 27, then the end position supporting and blocking part 33 pushes and blocks one end of the steel frame, at this time, the bottom supporting rod 31 at the end of the supporting arm 29 abuts against the inner arc surface of the steel frame, when the steel frame is located above the driving shaft 26 along with the rotating frame 24, one end of the steel frame is supported on the bottom supporting rod 31, and the other end of the steel frame is supported and blocked by the end position supporting and blocking part 33, then the steel frame continues to move, the end of the steel frame supported by the bottom supporting rod 31 contacts the inclined guide plate 19, along with the continuous rotation of the rotating frame 24, the steel frame is gradually pushed into the area between the limiting part and the arc-shaped supporting plate 15, the end position supporting and blocking part 33 can pass through the middle gap 20 on the inclined guide plate 19, the supporting arm 29, the pushing arm 30 and the cap head 28 form a Y-shaped structure, when the segment steel frame enters the area between the outer blocking plate 17 on the limiting part and the arc-shaped supporting plate 15, the end position supporting and blocking part 33 passes through the middle gap 20, then the supporting arm 29 and the pushing arm 30 on the rotating frame 24 are adjusted, and the rotating frame 24 is reversely rotated, so that the steel frame installation at the position of the sidewall on the other side in the tunnel is completed, finally, the steel frame at the position of the vault is installed, compared with the existing technology of installing the steel frame by manpower, the construction efficiency is greatly improved.

[0028] And Figure 3 And Figure 7As shown, the limiting part is provided with a top part and a positioning strip opening 34, the top part and the positioning strip opening 34 are arranged on the curved sliding support plate 16 and the outer baffle 17 respectively, the top part comprises a top screw rod 35 which can pass through the curved sliding support plate 16 and is screwed with the curved sliding support plate 16, the top screw rod 35 is arranged along the length direction of the curved sliding support plate 16, after the segment steel frame is arranged at the position between the outer baffle 17 and the arc-shaped support plate 15, the inner end of the positioning screw rod 35 is abutted on the arc surface of the segment steel frame by rotating the positioning screw rod 35, and the segment steel frame is moved to be close to the inner wall of the tunnel, the positioning strip opening 34 extends from the arc side edge of the outer baffle 17 to the arc center, the positioning strip opening 34 is arranged at equal intervals around the arc center of the outer baffle 17, so that when the positioning anchor rod inserted into the inner wall of the tunnel is connected with the segment steel frame, the positioning anchor rod can be bent into the positioning strip opening 34 and then fixed with the segment steel frame, after the steel frame at the position is completely assembled, the supporting arm 12 is retracted, the limiting part and the arc-shaped support plate 15 are away from the inner wall of the tunnel, so that the device can be moved to the next position to be constructed.

[0029] Referring to Figure 8 As shown, the two ends of the bottom support rod 31 are provided with movable and resettable anti-disengagement rods 36, the anti-disengagement rods 36 are located on the two sides of the steel frame to be installed, the anti-disengagement rod 36 comprises a straight rod body 37 and a ring-shaped disc 38, the ring-shaped disc 38 is fixed on the lower end of the straight rod body 37 and is sleeved on the bottom support rod 31, the ring-shaped disc 38 is connected with an end disc 40 through a torsion spring 39, the end disc 40 is fixed on the two ends of the bottom support rod 31, the anti-disengagement rod 36 can rotate around the bottom support rod 31 as the shaft, after the anti-disengagement rod 36 is blocked by contacting the end of the inclined guide plate 19, the anti-disengagement rod 36 rotates, so that the continuous movement of the supporting arm 29 and the bottom support rod 31 is not affected, and when the segment steel frame does not enter the area between the outer baffle 17 and the arc-shaped support plate 15, the anti-disengagement rod 36 can prevent the segment steel frame from disengaging.

[0030] Referring to Figure 9 As shown, the corner end of the material placing tray 22 is fixed with a vertically extending sliding rod 41, the sliding rod 41 is matched with a through hole arranged on the supporting table 8, the sliding rod 41 passes through the through hole, the connection between the material placing tray 22 and the supporting table 8 is realized by an adjusting arm 42, the adjusting arm 42 is provided with an external thread, the adjusting arm 42 passes through the supporting table 8, the upper end of the adjusting arm 42 is fixed with a plug shaft 43, the plug shaft 43 is fixed with a horizontal tray 44, the plug shaft 43 is matched with a blind hole arranged at the center position of the lower surface of the material placing tray 22, the adjusting arm 42 drives the material placing tray 22 to ascend and descend when rotating, so that the horizontal height of the material placing tray 22 can be adjusted, and the segment steel frame can smoothly enter the area between the outer baffle 17 and the arc-shaped support plate 15.

[0031] Further improvement of the present application, referring to Figures 10 to 11As shown, the material placing groove 23 on the material placing tray 22 is connected with the feeding channel 44, and the material placing groove 23 is provided with a supporting feeding part below the feeding channel 44, the supporting feeding part controls the steel frame to be installed in the material placing groove 23 to move upward, the segment steel frame can be arranged and placed in the feeding channel 44, then the arranged and placed segment steel frame is slowly pushed into the material placing groove 23, when the segment steel frame falls on the supporting feeding part, the segment steel frame is pushed upward by the supporting feeding part, the specific supporting feeding part includes a semicircular bent supporting plate 45, the supporting plate 45 and the bottom surface of the material placing groove 23 are connected with the lifting device 46, when the lifting device 46 pushes the supporting plate 45 to the state that the two ends of the supporting plate 45 contact with the groove of the material placing groove 23, the pushing of the supporting plate 45 is stopped, so that the supporting plate 45 and the material placing groove 23 form a material placing space.

[0032] It will be obvious to a person skilled in the art that, without departing from the scope of the present application, the present application can be implemented in other specific forms. Thus, the embodiments described above are to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the description above, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein and are part of the invention. Any reference signs in the claims should not be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that, although the present specification is described in terms of embodiments, not every implementation embodies an independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A safety support device for tunnel engineering, comprising a base frame movable along the tunnel alignment, characterized in that: The base frame is provided with side supports and a central through-hole. The side supports are located on both sides of the central through-hole. A longitudinal feed port communicating with the central through-hole is provided on the top plane of the base frame. An adjustment slot extending towards the side supports is provided at the longitudinal feed port. An adjustable support platform is provided inside the central through-hole. A support arm is connected to the support platform via a hinge seat located on the central bisector of the support platform. The support arm has a telescopic structure and can move within the adjustment slot. An arc-shaped support plate is detachably installed at the upper end of the support arm. The plane of the arc-shaped support plate is perpendicular to the support platform. A limiting part is connected to the plane of the arc-shaped support plate. The limiting part includes an arc-shaped curved sliding plate. An arc-shaped outer baffle is fixed to the side of the curved sliding plate. A mating interface is provided on the outer baffle. The outer baffle is parallel to the arc-shaped support plate. The end of the curved sliding plate is detachably installed. The system includes an inclined guide plate with a central notch at its free end. A material tray is positioned above the support platform, and the tray has a material trough and a rotating frame located within it. A flat frame tube is positioned at the opening of the material trough. The rotating frame includes a drive shaft and a support arm fixed to the drive shaft. The drive shaft is connected to a bidirectional driver, and the support arm extends radially along the drive shaft. The end of the support arm is connected to a rotatable and adjustable material support frame, which moves the steel frame to be installed. The material support frame includes a cap connected to the end of the support arm, with a support arm and a push arm connected to one end of the cap. A bottom support rod is fixed to the end of the support arm, and a pressure plate is fixed to the end of the push arm. The pressure plate has an end support parallel to the push arm, which can pass through the central notch on the inclined guide plate. The support arm, push arm, and cap form a Y-shaped structure.

2. The safety support device for tunnel engineering according to claim 1, characterized in that: The limiting part is provided with a top part and a positioning strip opening. The top part and the positioning strip opening are respectively provided on the curved slide plate and the outer baffle. The top part includes a top positioning screw that can pass through the curved slide plate and be screwed to the curved slide plate. The top positioning screw is arranged along the length direction of the curved slide plate.

3. A safety support device for tunnel engineering according to claim 1, characterized in that: The material placement trough is connected to a feeding channel, and a support part is provided in the material placement trough below the feeding channel. The support part controls the upward movement of the steel frame to be installed in the material placement trough.

4. A safety support device for tunnel engineering according to claim 3, characterized in that: The aforementioned feeding section includes a semi-circular bent pallet, and a lifting device is connected between the pallet and the bottom surface of the material trough.

5. A safety support device for tunnel engineering according to claim 1, characterized in that: Both ends of the base support rod are equipped with movable and repositionable anti-detachment rods, which are located on both sides of the steel frame to be installed.

6. A safety support device for tunnel engineering according to claim 5, characterized in that: The anti-detachment rod includes a straight rod body and an annular disc. The annular disc is fixed to the lower end of the straight rod body and sleeved on the bottom support rod. The annular disc is connected to an end plate through a torsion spring, and the end plate is fixed to both ends of the bottom support rod.

7. A safety support device for tunnel engineering according to claim 1, characterized in that: The material tray has a vertically extending slide rod fixed at its corner. The slide rod is fitted with a through hole on the support platform. The slide rod passes through the through hole. The material tray is connected to the support platform by an adjusting arm.

8. A safety support device for tunnel engineering according to claim 7, characterized in that: The adjusting arm is provided with external threads and passes through the support platform. The upper end of the adjusting arm is fixed with a shaft and a horizontal tray is fixed on the shaft. The shaft is matched with a blind hole located at the center of the lower surface of the material tray. When the adjusting arm rotates, it drives the material tray to rise and fall.

Images