CN217712608U - Adjustable backing plate in steel bow member bottom - Google Patents

Abstract

The utility model provides an adjustable backing plate at the bottom of a steel arch frame, which comprises a U-shaped base, wherein the U-shaped base comprises two layers which are parallel up and down and are fixed through a connecting plate, and a plurality of lugs are fixedly arranged on the opposite sides of the lower layer of the U-shaped base; the lug is provided with a threaded hole vertical to the U-shaped base; the through plate can be inserted between two layers of the U-shaped base, and the length of the through plate is greater than the width of a U-shaped opening on the U-shaped base; the base adjusting rods correspond to the lugs one by one, and are provided with threads and matched with threaded holes in the lugs; the device comprises an arch frame base, a plurality of fixing nuts and a plurality of fixing bolts, wherein the two ends of the arch frame base are respectively fixed with the fixing nuts, and the axes of the fixing nuts are vertical to the arch frame base; and the supporting rods correspond to the fixing nuts on the arch frame base one by one, and are provided with threads and matched with the fixing nuts on the arch frame base. The elevation of the bottom of the arch centering can be well controlled, and the flatness of the installation bottom of the arch centering can also be improved.

Description

Adjustable backing plate in steel bow member bottom

Technical Field

The utility model relates to a tunnel construction technical field, concretely relates to adjustable backing plate in steel bow member bottom.

Background

In the construction of underground tunnels, an arch center is generally used as a supporting construction process, and in actual construction, the conventional method for erecting the arch center is to clean virtual slag at the bottom of the arch center and erect the arch center after excavation is finished. However, the excavation is blasting or mechanical construction, and the elevation of the excavated bottom surface cannot be exactly the elevation of the designed arch frame bottom. The conventional method is to prefabricate concrete blocks with different thicknesses in advance and use the concrete blocks as the bottom cushion blocks of the arch frame. There are also less liability to use virtual ballast bedding at the bottom of the arch. The above methods all have certain disadvantages. Particularly, the latter method often causes the bottom of the arch frame to be empty, and has great potential safety hazard. The first method also has certain disadvantages, one is that the thickness of the prefabricated cushion block is difficult to match with the site in advance, and the installation precision can not meet the requirement. And the second is to add a process, and the construction management personnel need to pay enough attention to the manufacturing quality and the manufacturing quantity of the cushion blocks to meet the field requirement. And the third is that a large amount of labor and materials are consumed for manufacturing cushion blocks, transporting and the like. In addition, the flatness requirement of the cushion block is difficult to ensure in the installation process. The position and the verticality quality of the mounted arch frame are difficult to guarantee.

Based on above circumstances, bow member bottom elevation is difficult to control in the tunnel construction, and the bow member bottom is vacated, and bow member installation bottom roughness is not up to standard is the problem that this device will be solved.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned problem that prior art exists, the utility model discloses the main technical problem who solves is: the elevation of the bottom of the arch frame in tunnel construction is difficult to control, the bottom of the arch frame is hollow, and the flatness of the bottom of the arch frame is not up to the standard.

In order to solve the technical problem, the utility model adopts the following technical scheme: a steel arch bottom adjustable shim plate comprising:

the U-shaped base comprises two layers which are parallel up and down and is fixed through a connecting plate, and a plurality of lugs are fixedly arranged on two opposite sides of the lower layer of the U-shaped base; the lug is provided with a threaded hole vertical to the U-shaped base;

the through plate can be inserted between two layers of the U-shaped base, and the length of the through plate is greater than the width of a U-shaped opening on the U-shaped base;

the base adjusting rods correspond to the lugs one by one, and are provided with threads and matched with the threaded holes in the lugs;

the device comprises an arch frame base, a plurality of fixing nuts and a plurality of fixing bolts, wherein the two ends of the arch frame base are respectively fixed with the fixing nuts, and the axes of the fixing nuts are vertical to the arch frame base; and

the supporting rod corresponds to the fixing nuts on the arch frame base one by one, and the supporting rod is provided with threads and matched with the fixing nuts on the arch frame base.

Preferably, the U-shaped base further comprises a first guide plate and a second guide plate, and the cross sections of the first guide plate and the second guide plate are both right trapezoid; the lower bottom surfaces of the two first guide plates are respectively arranged on two sides of a U-shaped opening on the U-shaped base, and the distance between the upper bottom surfaces of the two first guide plates is the same as the width of the arch center base; the lower bottom surface of the second guide plate is arranged on the other side of the U-shaped opening on the U-shaped base; the inclined planes of the first guide plate and the second guide plate are positioned on one side close to the upper layer of the U-shaped base. The inclined plane through first deflector and second deflector can lead to the bow frame base, can fix a position the bow frame base through the last bottom surface of first deflector and second deflector to can improve the position accuracy of bow frame base.

Preferably, the two first guide plates are respectively installed at the central positions of two sides of a U-shaped opening on the U-shaped base, the number of the penetrating plates is two, and the two penetrating plates can be respectively inserted between two layers of the U-shaped base on two sides of the first guide plates. Thereby can be better carry out location and support to the bow member base.

Preferably, one end of the base adjusting rod is provided with a knob, and the edge of the knob is provided with a plurality of wave-shaped bulges. Thereby the base adjusting rod can be more conveniently rotated.

Preferably, a rod cap is fixedly mounted at one end of the supporting rod, and a strip-shaped groove is formed in one side, far away from the supporting rod, of the rod cap. The supporting rod can be rotated more conveniently through the strip-shaped groove.

Preferably, a movable nut is mounted on the supporting rod and is matched with the thread on the supporting rod. Through the cooperation of movable nut and pole cap, can press from both sides the fixation nut tight for the bracing piece can be installed more firmly.

Compared with the prior art, the utility model discloses at least, following advantage has:

1. the elevation of bow member bottom can be controlled well, and the roughness of bow member installation bottom can also be improved, improves engineering efficiency, ensures construction quality, and lighter than former technology, and the security is higher. The utility model discloses in, measure position and elevation of placing the bow member base, insert the screw hole in the lug on the U type base with the one end of base regulation pole, and rotate the base regulation pole and adjust the position of base regulation pole on U type base, then stand the other end of base regulation pole at the position of measurement department, then will wear the board and insert between two-layer of U type base, and place on U type base lower floor, rotate and adjust the height that the board was worn on the U type base by the base regulation pole, make and wear board top elevation and bow member base highly uniform, roughness and the elevation of U type base are finely tuned to the rethread horizontal disc reach the design height, after the adjustment is accomplished, arrange the bow member base in and wear the board top, install the bracing piece again, install on the fixation nut on the bow member base with the bracing piece, and adjust the height of bracing piece, make bracing piece lower extreme meet and suitable atress with ground, thereby can control the elevation of bow member bottom well, and can also improve the roughness of bow member installation bottom.

2. The plate, the U-shaped base and the base adjusting rod can be taken out for reuse, and the engineering cost is greatly reduced. The utility model discloses in, can install after the completion just a net piece, welding bow member splice bar, beat and establish bow member lock foot stock and weld according to the design requirement with the bow member, after the welding is accomplished, adjust the pole to the opposite direction rotation with the base, whereabouts U type base to take out and wear board, U type base and adjust the pole, make the bracing piece prop up the bow member base, spray the concrete at last and fix, spray bow member joint plate lower part earlier.

Drawings

In order to more clearly illustrate the embodiments of the present invention, the drawings used in the embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

Fig. 1 is an assembly diagram of an adjustable base plate at the bottom of a steel arch according to an embodiment of the present invention.

Fig. 2 is a structural diagram of a U-shaped base according to an embodiment of the present invention.

Fig. 3 is a left side view of the structure diagram provided in the embodiment of the present invention.

Fig. 4 is a structural diagram of two through plates provided in the embodiment of the present invention.

Fig. 5 is a structural diagram of a base adjusting lever according to an embodiment of the present invention.

Fig. 6 is a structural diagram of an arch frame base according to an embodiment of the present invention.

Fig. 7 is a structural diagram of a support rod according to an embodiment of the present invention.

Fig. 8 isbase:Sub>A cross-sectional viewbase:Sub>A-base:Sub>A of fig. 2.

Fig. 9 is a cross-sectional view of B-B in fig. 2.

Fig. 10 is a top view structural diagram of the supporting rod provided in the embodiment of the present invention.

Reference numerals are as follows: 1-U-shaped base, 11-connecting plate, 12-lug, 13-threaded hole, 14-U-shaped opening, 15-first guide plate, 16-second guide plate, 2-threading plate, 3-base adjusting rod, 31-knob, 4-arch frame base, 41-fixing nut, 5-supporting rod, 51-rod cap, 52-movable nut and 53-strip-shaped groove.

Detailed Description

Embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

In the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Referring to fig. 1-7 and 10, the present invention provides an embodiment: an adjustable base plate at the bottom of a steel arch comprises a U-shaped base 1, a penetrating plate 2, a base adjusting rod 3, an arch base 4 and a supporting rod 5.

The U-shaped base 1 comprises two layers which are parallel up and down, the specific size of each layer is 40cm in width and 60cm in length, each layer is made of a steel plate with the thickness of 2cm, the opening width of a U-shaped opening is 30cm, the opening height is 40cm, the U-shaped opening is fixed through a connecting plate 11, the connecting plate 11 is made of a steel plate with the height of 8cm and the thickness of 2cm, and a plurality of lugs 12 are fixedly arranged on two opposite sides of the lower layer of the U-shaped base 1; the lug 12 is provided with a threaded hole 13 vertical to the U-shaped base 1, the thickness of the lug 12 is 2cm, and the end part is in a semicircular shape with the outer diameter of 5 cm. The straight section is 2.5cm long; the inner diameter of the threaded hole 13 is 3cm and is matched with M30/GB/T41.

Wear board 2, wear board 2 and can insert between two-layer of U type base 1, and wear the length of board 2 and be greater than the width of U type mouth 14 on the U type base 1.

The type of the base adjusting rod 3 is GB/T41M30, the length is 60cm, the base adjusting rod 3 corresponds to the lugs 12 one by one, and the base adjusting rod 3 is provided with threads and matched with the threaded holes 13 on the lugs 12. Further, one end of the base adjusting rod 3 is provided with a knob 31, the thickness of the knob 31 is 1cm, the maximum outer diameter is 8cm, the edge of the knob 31 is provided with a plurality of waveform protrusions, and the waveform protrusions are semicircular with the diameter of 1.5cm, so that the base adjusting rod 3 can be rotated more conveniently.

The arch centering base 4 is 320mm long, 240mm wide and 15mm thick, a plurality of fixing nuts 41 are fixed at two ends of the arch centering base 4 respectively, the type of the fixing nut 41 is M20, and the axis of the fixing nut 41 is perpendicular to the arch centering base 4.

The model of the support rod 5 is M20/GBT41, the length is 60cm, the support rods 5 correspond to the fixing nuts 41 on the arch frame base 4 one by one, and the support rods 5 are provided with threads and matched with the fixing nuts 41 on the arch frame base 4.

In specific implementation, after excavation of an underground tunnel is completed, a base is cleaned, the position and elevation of an arch frame base 4 are measured, one end of a base adjusting rod 3 is inserted into a threaded hole 13 in a lug 12 on a U-shaped base 1, the base adjusting rod 3 is rotated to adjust the position of the base adjusting rod 3 on the U-shaped base 1, the other end of the base adjusting rod 3 is erected at the position of a measuring position, a penetration plate 2 is inserted between two layers of the U-shaped base 1 and is placed on the lower layer of the U-shaped base 1, the height of the penetration plate 2 on the U-shaped base 1 is adjusted by rotating the adjusting base adjusting rod 3, the top elevation of the penetration plate 2 is consistent with the height of the arch frame base 4, the flatness and the elevation of the U-shaped base 1 are finely adjusted by a water level disc, in order to ensure the accuracy requirement, the elevation error is accurate to within 1cm as much as possible, the flatness reaches flatness and is flat, after adjustment is completed, the arch frame base 4 is placed above the arch frame base 2, then the supporting rod 5 is installed, the supporting rod 5 is installed on a fixing nut 41 on the arch frame base 4, the height of the supporting rod 5 is adjusted, the supporting rod is connected with the ground, the elevation is not required by a proper force, the elevation, the bottom of the arch frame is well, and the arch frame is not easy to be controlled, and the bottom of the arch frame can be flat frame can be well; after the welding is finished, the base adjusting rod 3 is rotated in the opposite direction, the U-shaped base 1 falls, the penetrating plate 2, the U-shaped base 1 and the base adjusting rod 3 are taken out, the arch base 4 is supported by the supporting rod 5, and finally, concrete is sprayed for fixing, and the lower part of the arch joint plate is sprayed first.

Referring to fig. 8-9, in other embodiments, the U-shaped base 1 further includes a first guide plate 15 and a second guide plate 16, and the cross sections of the first guide plate 15 and the second guide plate 16 are both right-angled trapezoids; wherein, the upper bottom width of the first guide plate 15 is 2cm, the lower bottom width is 12cm, the trapezoid height is 29mm, and the plate thickness is 2cm; the width of the upper bottom of the second guide plate 16 is 2cm, the width of the lower bottom is 12cm, the height of the trapezoid is 29mm, and the plate thickness is 15cm; the lower bottom surfaces of the two first guide plates 15 are respectively arranged at two sides of a U-shaped opening 14 on the U-shaped base 1, and the distance between the upper bottom surfaces of the two first guide plates 15 is the same as the width of the arch frame base 4; the lower bottom surface of the second guide plate 16 is arranged at the other side of the U-shaped opening 14 on the U-shaped base 1; the inclined surfaces of the first guide plate 15 and the second guide plate 16 are positioned at one side close to the upper layer of the U-shaped base 1. The first guide plate 15 and the second guide plate 16 are arranged on the upper layer and the lower layer of the U-shaped base 1; the arch base 4 can be guided by the inclined surfaces of the first guide plate 15 and the second guide plate 16, and the arch base 4 can be positioned by the upper bottom surfaces of the first guide plate 15 and the second guide plate 16, so that the position accuracy of the arch base 4 can be improved. Further, two first guide plates 15 are respectively installed at the central positions of two sides of a U-shaped opening 14 on the U-shaped base 1, two penetrating plates 2 are arranged, the two penetrating plates 2 can be respectively inserted between two layers of the U-shaped base 1 on two sides of the first guide plates 15, and the penetrating plates 2 are made of steel plates with the width of 10cm and the length of 45cm and the thickness of 2 cm. During concrete implementation, two wear board 2 to insert between U type base 1 two-layer, lie in first deflector 15 both sides respectively, and wear the both ends of board 2 and place on the lower floor of U type base 1 to can be better fix a position and support bow member base 4.

Referring to fig. 7 and 10, in another embodiment, a rod cap 51 is fixedly installed at one end of the support rod 5, and the rod cap 51 has a height of 18.7mm and a specific size, and like the M20 nut, a strip-shaped groove 53 is formed in one side of the rod cap 51 away from the support rod 5. The support rod 5 can be more conveniently rotated through the strip-shaped groove 53. Furthermore, a movable nut 52 is installed on the support rod 5, the type of the movable nut 52 is M20, and the movable nut 52 is matched with the thread on the support rod 5. The movable nut 52 is rotated to adjust the position of the movable nut 52 on the support rod 5, and the fixed nut 41 can be clamped tightly through the matching of the movable nut 52 and the rod cap 51, so that the support rod 5 can be installed more stably.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included in the scope of the claims and description of the present invention.

Claims (6)

1. The utility model provides an adjustable backing plate in steel bow member bottom which characterized in that includes:

the U-shaped base (1), the U-shaped base (1) comprises two layers which are parallel up and down and are fixed through a connecting plate (11), and a plurality of lugs (12) are fixedly arranged on two opposite sides of the lower layer of the U-shaped base (1); the lug (12) is provided with a threaded hole (13) vertical to the U-shaped base (1);

the penetrating plate (2) can be inserted between two layers of the U-shaped base (1), and the length of the penetrating plate (2) is greater than the width of a U-shaped opening (14) in the U-shaped base (1);

the base adjusting rod (3) corresponds to the lugs (12) one by one, and the base adjusting rod (3) is provided with threads and matched with threaded holes (13) in the lugs (12);

the arch center base (4), a plurality of fixing nuts (41) are respectively fixed at two ends of the arch center base (4), and the axial lines of the fixing nuts (41) are vertical to the arch center base (4); and

the supporting rod (5), the supporting rod (5) corresponds to the fixing nut (41) on the arch frame base (4) one by one, and the supporting rod (5) is provided with threads and matched with the fixing nut (41) on the arch frame base (4).

2. A steel arch bottom adjustable shim according to claim 1, characterised in that the U-shaped base (1) further comprises a first guide plate (15) and a second guide plate (16), the cross-sections of the first guide plate (15) and the second guide plate (16) being right trapezoid;

the lower bottom surfaces of the two first guide plates (15) are respectively arranged at two sides of a U-shaped opening (14) on the U-shaped base (1), and the distance between the upper bottom surfaces of the two first guide plates (15) is the same as the width of the arch frame base (4);

the lower bottom surface of the second guide plate (16) is arranged on the other side of the U-shaped opening (14) on the U-shaped base (1);

the inclined planes of the first guide plate (15) and the second guide plate (16) are positioned at one side close to the upper layer of the U-shaped base (1).

3. A steel arch bottom adjustable shim plate according to claim 2, characterized in that two first guide plates (15) are respectively installed at the central positions of two sides of the U-shaped opening (14) on the U-shaped base (1), two penetration plates (2) are provided, and two penetration plates (2) are respectively inserted between two layers of the U-shaped base (1) at two sides of the first guide plates (15).

4. The adjustable base plate of the steel arch according to claim 1, characterized in that the base adjusting rod (3) is provided with a knob (31) at one end, and the edge of the knob (31) is provided with a plurality of wave-shaped protrusions.

5. The adjustable base plate for the bottom of the steel arch according to the claim 1, characterized in that a rod cap (51) is fixedly installed at one end of the supporting rod (5), and a strip-shaped groove (53) is arranged at one side of the rod cap (51) far away from the supporting rod (5).

6. A steel arch bottom adjustable shim according to claim 5, characterised in that the support bar (5) is fitted with a movable nut (52), said movable nut (52) cooperating with a thread on the support bar (5).

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