Bottom elevation leveling adjustment device for cast-in-place concrete guardrail formwork

Abstract

The present invention discloses a device for leveling and adjusting the elevation of the bottom of a cast-in-place concrete guardrail formwork, comprising a longitudinal support beam, and paired transverse support rods, a lifting mechanism, an oblique support plate, and a screw jack. Two sets of transverse grooves are provided on both sides of the middle of the longitudinal support beam, one end of the horizontally arranged transverse support rod is vertically fixedly welded to the middle of the lifting mechanism, and the bottom of the lifting mechanism is supported on the ground; the transverse support rod is fixedly connected to the longitudinal support beam via a pair of oblique support plates arranged in an "eight-shaped" shape, and the lower side of the longitudinal support beam is supported on the ground; the bottom of the cast-in-place concrete guardrail formwork is supported on the upper side of the other end of the transverse support rod, and the lower side of the other end of the transverse support rod is supported on the ground by a screw jack. The present invention realizes rapid and accurate leveling and positioning of the bottom elevation of the guardrail formwork, is reusable, improves turnover efficiency, greatly reduces construction costs, and has significant social and economic benefits.

Description

Technical Field

[0001] The invention relates to a highway guardrail construction device, in particular to a device for adjusting and leveling the bottom elevation of a cast-in-situ concrete guardrail template, and belongs to the technical field of highway ancillary facility construction. Background Art

[0002] During the construction of cast-in-place concrete guardrails on both sides of highways, the bottom elevation of the guardrail formwork needs to be adjusted. The existing adjustment method is as follows: A mortar strip, used to control the bottom elevation of the guardrail formwork, is first cast on each side of the road surface. Then, lines are drawn on the mortar strip to mark the inner edge of the concrete guardrail for installation. This adjustment method presents several issues: The mortar strip must be mixed with cement, sand, and water, increasing construction costs and preventing recycling. The top surface of the mortar strip must be repeatedly leveled to ensure good contact with the formwork, which is labor-intensive. If the top surface of the mortar strip is uneven, secondary leveling with steel plates or mortar is required. After the mortar strip is completed, a period of time must elapse until it reaches the required strength before the guardrail formwork can be installed on top. After the cast-in-place concrete guardrail is constructed, the excess mortar strip must be removed, and the resulting solid waste must be cleaned and removed. If the strength of the poured mortar band is too low, it is easy for the mortar band to be partially crushed and collapsed due to the low compressive strength and unable to bear the weight of the guardrail formwork, necessitating rework and delaying the construction period. In summary, the above construction method is time-consuming and inefficient, significantly increasing construction costs. Summary of the Invention

[0003] The purpose of the present invention is to provide a cast-in-place concrete guardrail template bottom elevation leveling adjustment device which is fast, efficient and significantly reduces construction costs.

[0004] The present invention is achieved through the following technical solutions:

[0005] A device for leveling and adjusting the bottom elevation of a cast-in-place concrete guardrail formwork comprises a longitudinal support beam, and paired transverse support rods, a lifting mechanism, an oblique support plate and a screw jack. The longitudinal support beam is made of channel steel, and two groups of transverse groove groups are respectively provided on both sides of the middle of the longitudinal support beam. Each group of transverse groove groups includes a central transverse groove and side transverse grooves symmetrically arranged on both sides of the central transverse groove. The transverse support rod with a rectangular cross section is horizontally arranged, and one end of the transverse support rod is respectively fixedly welded vertically to the middle of the lifting mechanism, and the bottom of the lifting mechanism is respectively supported on the ground; the other end of the transverse support rod respectively passes through the central transverse groove of the longitudinal support beam, and the upper end folded edges of the oblique support plate are respectively clamped on the two side surfaces of the other end of the transverse support rod. The upper folded edges of a pair of oblique support plates are fixed to both sides of the other end of the transverse support rod by means of transverse support rod bolts that respectively pass through the upper folded edge and the other end of the transverse support rod and nuts tightened on the transverse support rod bolts; the lower folded edges of a pair of oblique support plates are respectively fixed to both sides of the other end of the transverse support rod by means of bolts that respectively pass through the lower folded edge and the side horizontal grooves of the longitudinal support beam and nuts tightened on the bolts and resting on the rectangular pads, so that the transverse support rod is fixedly connected to the longitudinal support beam through a pair of oblique support plates arranged in an "eight-shaped" shape, and the lower side of the longitudinal support beam is supported on the ground; the bottom of the cast-in-place concrete guardrail template is supported on the upper side of the other end of the transverse support rod, and the lower side of the other end of the transverse support rod is supported on the ground by a screw jack.

[0006] The purpose of the present invention can be further achieved by the following technical measures.

[0007] Furthermore, the minimum distance A between the two ends of the central transverse groove and the two ends of the side transverse groove of the longitudinal support beam and the inner side surface of the corresponding groove edge is ≥10mm.

[0008] Furthermore, the lifting mechanism includes an adjusting handle, a vertical screw, a lifting nut and a base plate weldment. The middle part of the adjusting handle is welded and fixed to the top end of the vertical screw, one end of the horizontal support rod is welded and fixed to the middle part of the lifting nut, the lower end of the vertical screw is screwed into the lifting nut, and the vertical screw is supported on the ground through the base plate weldment.

[0009] Furthermore, the base plate weldment includes a base plate and a circular ring, the circular ring is welded and fixed on the center of the upper side of the base plate, and the light rod at the bottom of the vertical screw extends into the circular ring and is supported on the ground through the base plate.

[0010] Furthermore, the upper folded edge of the oblique support plate and the lower folded edge of the oblique support plate are perpendicular to each other.

[0011] The present invention adopts a structure in which paired transverse support rods, lifting mechanisms, oblique support plates and longitudinal support beams are fixedly connected, so that the two ends of the transverse support rods are respectively supported on the ground with adjustable heights by lifting mechanisms and screw jacks. By adjusting the height of the upper side of the transverse support rods from the ground, the elevation adjustment of the bottom of the guardrail formwork supported by the transverse support rods can be achieved. The present invention does not require pouring a leveling mortar layer to adjust the elevation of the bottom of the guardrail formwork, which solves the problems of low precision of the leveling mortar layer, inaccurate adjustment of the elevation of the bottom of the guardrail formwork and the need for repeated leveling of the mortar belt, and achieves rapid and accurate leveling and positioning of the bottom elevation of the guardrail formwork. The construction efficiency of leveling the bottom elevation of the guardrail formwork is significantly improved. The present invention is reusable, improves turnover efficiency, greatly reduces construction costs, and has significant social and economic benefits.

[0012] Advantages and features of the present invention are illustrated and explained by the following non-limiting description of preferred embodiments thereof, which are given by way of example only with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view of the present invention;

[0014] Figure 2 yes Figure 1 Left view of;

[0015] Figure 3 yes Figure 2 Top view of . DETAILED DESCRIPTION

[0016] The present invention will be further described below with reference to the accompanying drawings and examples.

[0017] In the description of the present invention, terms indicating orientation or positional relationships such as “upper”, “lower”, “left”, “right”, “inside” and “outside” are based on the orientation or positional relationships shown in the accompanying drawings, and do not indicate or imply that the device referred to must have a specific orientation.

[0018] like Figures 1 to 3 As shown, this embodiment includes a longitudinal support beam 1, and paired transverse support rods 2, a lifting mechanism 3, an oblique support plate 4 and a screw jack 5. The longitudinal support beam 1 of this embodiment is made of 10# channel steel. Two groups of transverse groove groups 11 are respectively provided on both sides of the middle of the longitudinal support beam 1. Each group of transverse groove groups 11 includes a central transverse groove 111 and side transverse grooves 112 symmetrically arranged on both sides of the central transverse groove 111. The transverse support rod 2 with a rectangular cross section is horizontally arranged. Figure 1 The right ends of the middle transverse supporting rods 1 are respectively fixedly welded vertically to the middle of the lifting mechanism 3, and the left ends of the transverse supporting rods 1 respectively pass through the central transverse groove 111 of the longitudinal support beam, and the bottoms of the lifting mechanisms 3 are respectively supported on the ground.

[0019] like Figure 2 and Figure 3 As shown, the upper end folded edge 41 of the oblique support plate 4 and the lower end folded edge 42 of the oblique support plate 4 are perpendicular to each other, and the upper end folded edge 41 of the oblique support plate 4 is respectively clamped on the two side surfaces of the left end of the transverse support rod 2, and the upper end folded edges 41 of a pair of oblique support plates 4 are respectively fixed to the two sides of the left end of the transverse support rod by the transverse support rod bolts 6 that pass through the upper end folded edge 41 and the left end of the transverse support rod 2 and the nuts 7 that are tightened on the transverse support rod bolts 6; the lower end folded edges 42 of a pair of oblique support plates 4 are respectively passed through the bolts 43 that pass through the lower end folded edge 42 and the side horizontal groove 112 of the longitudinal support beam 1 and the nuts 7 that are tightened on the bolts 43 and rest on the rectangular pad 44, so that the transverse support rod 2 passes through Figure 2 A pair of diagonal support plates arranged in a figure-eight pattern provide a stable connection between one end of a transverse support rod 2 and a longitudinal support beam 1, the underside of which is supported on the ground. The bottom of the cast-in-place concrete guardrail formwork 10 is supported on the upper side of the left end of the transverse support rod 2, while the underside of the left end of the transverse support rod 2 is supported on the ground via a screw jack 5.

[0020] like Figure 1 As shown, the minimum distance A between the two ends of the central transverse groove 111 and the two ends of the side transverse groove 112 of the longitudinal support beam 1 and the inner side surface of the corresponding groove edge is ≥10mm, ensuring that the longitudinal support beam 1 made of 10# channel steel has sufficient strength and rigidity without deformation.

[0021] The lifting mechanism 3 includes an adjustment handle 31, a vertical screw 32, a lifting nut 33, and a bottom plate weldment 34. The middle portion of the adjustment handle 31 is welded and fixed to the top of the vertical screw 32. The right end of the horizontal support rod 2 is welded and fixed to the middle portion of the lifting nut 33. The lower end of the vertical screw 32 is screwed into the lifting nut 33. The bottom plate weldment 34 includes a bottom plate 341 and a ring 342. Figure 3 As shown, the ring 342 is welded and fixed on the center of the upper side of the bottom plate 341, and the light rod 321 at the bottom of the vertical screw 32 extends into the ring 342 and is supported on the ground through the bottom plate 341. Figure 3 As shown, the bottom plate 341 of this embodiment is a square, which has an area 27.3% larger than that of a circular plate of the same diameter, thereby improving the supporting stability of the bottom plate 341.

[0022] Figure 1The upper end fold 41 of the oblique support plate 4 of the present invention is fixedly connected to the left end of the transverse support rod 2. By rotating the adjustment handle 31 of the lifting mechanism 3, the vertical screw 32 is driven to rotate, thereby driving the transverse support rod 2 to move up and down through the vertical movement of the lifting nut 33; the lower end fold 42 of the oblique support plate 4 can move up and down along the side transverse groove 112 of the longitudinal support beam 1 and then be fixed to the longitudinal support beam 1 by the bolt 43 and nut 7. The transverse support rod 2 of the present invention adjusts its left end height through the oblique support plate 4 and adjusts its right end height through the lifting nut 33, thereby achieving precise up and down translation of the transverse support rod 2, and thus achieving precise adjustment of the bottom elevation of the guardrail formwork 10 supported by the transverse support rod 2. The screw 51 of the screw jack 5 is rotated so that its top ball head is stably supported on the lower side of the left end of the transverse support rod 2 through the left end of the transverse support rod 2, thereby ensuring reliable support for the bottom of the guardrail formwork 10. The inclined support plate 4 plays a role in accurately adjusting the bottom elevation of the guardrail formwork 10, thereby significantly improving the construction efficiency of leveling the bottom elevation of the guardrail formwork 10 and greatly reducing the construction cost of leveling the bottom elevation of the guardrail formwork 10.

[0023] In addition to the above embodiments, the present invention may also have other implementation methods. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present invention.

Claims

1. A device for leveling and adjusting the bottom elevation of a cast-in-place concrete guardrail formwork, characterized by: It includes a longitudinal support beam, and paired transverse support rods, a lifting mechanism, an oblique support plate and a screw jack. The longitudinal support beam is made of channel steel. Two groups of transverse groove groups are respectively provided on both sides of the middle of the longitudinal support beam. Each group of transverse groove groups includes a central transverse groove and side transverse grooves symmetrically arranged on both sides of the central transverse groove. The transverse support rod with a rectangular cross section is arranged horizontally. One end of the transverse support rod is respectively fixedly welded to the middle of the lifting mechanism vertically, and the bottom of the lifting mechanism is respectively supported on the ground; the other end of the transverse support rod respectively crosses the central transverse groove of the longitudinal support beam, and the upper end folding edge of the oblique support plate is respectively clamped on the two side surfaces of the other end of the transverse support rod. By respectively crossing the upper end folding edge The horizontal support rod bolts at the side and the other end of the horizontal support rod and the nuts tightened on the horizontal support rod bolts fix the upper end folded edges of a pair of oblique support plates on both sides of the other end of the horizontal support rod; the lower end folded edges of a pair of oblique support plates are respectively fixed by bolts that pass through the lower end folded edges and the side horizontal grooves of the longitudinal support beam and nuts tightened on the bolts and resting on the rectangular pads, so that the horizontal support rod is fixedly connected to the longitudinal support beam through a pair of oblique support plates arranged in an "eight-shaped" shape, and the lower side of the longitudinal support beam is supported on the ground; the bottom of the cast-in-place concrete guardrail formwork is supported on the upper side of the other end of the horizontal support rod, and the lower side of the other end of the horizontal support rod is supported on the ground by a screw jack.

2. The bottom elevation leveling and adjusting device for cast-in-situ concrete guardrail formwork according to claim 1, characterized in that: The minimum distance A between the two ends of the central transverse groove and the two ends of the side transverse groove of the longitudinal support beam and the inner side surface of the corresponding groove edge is ≥10mm.

3. The bottom elevation leveling and adjusting device for cast-in-situ concrete guardrail formwork according to claim 1, characterized in that: The lifting mechanism includes an adjusting handle, a vertical screw, a lifting nut and a base plate weldment. The middle part of the adjusting handle is welded and fixed to the top end of the vertical screw, one end of the horizontal support rod is welded and fixed to the middle part of the lifting nut, the lower end of the vertical screw is screwed into the lifting nut, and the vertical screw is supported on the ground through the base plate weldment.

4. The cast-in-situ concrete guardrail template bottom elevation leveling and adjusting device according to claim 3, characterized in that: The bottom plate weldment includes a bottom plate and a circular ring. The circular ring is welded and fixed on the upper center of the bottom plate. The polished rod at the bottom of the vertical screw extends into the circular ring and is supported on the ground through the bottom plate.

5. The bottom elevation leveling and adjusting device for cast-in-situ concrete guardrail formwork according to claim 1, characterized in that: The upper folded edge of the oblique supporting plate and the lower folded edge of the oblique supporting plate are perpendicular to each other.

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