CN224002740U - Quick location structure of U type groove formwork support - Google Patents

Abstract

The utility model provides a quick positioning structure of a U-shaped groove formwork support, which comprises two groups of symmetrically arranged positioning components, wherein the positioning components comprise a U-shaped positioning frame, a U-shaped mounting frame, an elastic telescopic piece, a rotating block, a fixed block, a limiting mechanism, a transverse adjusting piece and a fixed piece, wherein the U-shaped positioning frame is arranged in the direction of an opening facing a formwork, the U-shaped mounting frame is glidingly nested outside the U-shaped positioning frame and is consistent with the opening direction of the U-shaped positioning frame, the elastic telescopic piece is connected between the U-shaped positioning frame and the U-shaped mounting frame, the rotating block is arranged at the front side of the mounting frame, the fixed block is rotationally connected with the rotating block through a vertical rotating shaft, the limiting mechanism is arranged between the rotating block and the fixed block and can lock a horizontal working position, the transverse adjusting piece is connected with the fixed block and drives the transverse adjusting piece to horizontally and transversely move, and the fixed piece is connected with one side of the transverse adjusting piece and matched with an embedded bolt.

Description

Quick location structure of U type groove formwork support

Technical Field

The utility model belongs to the technical field of underpass tunnel construction, and particularly relates to a quick positioning structure of a U-shaped groove formwork support.

Background

The U-shaped groove section is a structural section with a U-shaped cross section in a downward-penetrating tunnel and consists of a bottom plate and upright side walls at two sides, is usually positioned at the joint of the tunnel and a ground road or is used as a transition section between a tunnel main body and the ground, and in the concrete pouring construction of a single side wall of the U-shaped groove section, the accurate installation of a formwork support is a key link for ensuring the structural size and the construction quality;

The accurate alignment of the lower opening of the template and the wall edge line which is arranged in advance in a bouncing way is a core link for controlling the thickness and the perpendicularity of a wall body, but in actual construction, the prior art excessively relies on manual alignment of the bottom of the template with the wall edge line of the ground one by one with large volume and high weight, after the template is initially in place, the position of the template needs to be adjusted by fine adjustment through hoisting equipment repeatedly so as to align the wall edge line, the construction efficiency is low, the labor intensity of manual alignment operation is extremely high, and the alignment precision is easily influenced by misoperation caused by fatigue.

Disclosure of Invention

The utility model aims to provide a quick positioning structure of a U-shaped groove formwork support, which solves the problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

The quick positioning structure of the U-shaped groove formwork support comprises two groups of positioning components which are symmetrically arranged, wherein each positioning component comprises a U-shaped positioning frame, a U-shaped mounting frame, an elastic telescopic piece, a rotating block, a fixed block, a limiting mechanism and a transverse adjusting piece, the U-shaped positioning frame is arranged in the direction of a template, the U-shaped positioning frame is arranged in the direction of the opening, the U-shaped mounting frame is nested outside the U-shaped positioning frame in a sliding mode and is consistent with the opening direction of the U-shaped positioning frame, the elastic telescopic piece is connected between the U-shaped positioning frame and the U-shaped mounting frame, the rotating block is arranged on the front side of the mounting frame, the fixed block is connected with the rotating block in a rotating mode through a vertical rotating shaft, the limiting mechanism is arranged between the rotating block and the fixed block and can lock a horizontal working position, the transverse adjusting piece is connected with the fixed block and drives the transverse adjusting piece to move horizontally and transversely, the fixed piece is connected to one side of the transverse adjusting piece, and the embedded bolt is matched with the embedded bolt.

Preferably, the fixing piece comprises two triangular plates which are symmetrically arranged and are in isosceles right angles, connecting plates which are respectively and fixedly connected between the top parts of the bevel edges of the two isosceles right angles and between the bottom parts of the bevel edges of the triangular plates, and fixing nuts which are connected with the embedded threads and the bottom surfaces of which can be contacted with the bevel edges of the triangular plates.

Preferably, the transverse adjusting piece comprises a mounting plate horizontally and transversely arranged, a sliding groove formed in one side surface of the mounting plate facing the fixed block, a sliding block arranged in the sliding groove in a sliding manner and connected with the fixed block, and an adjusting screw rod with two ends rotatably connected to the side wall of the sliding groove and in threaded connection with the sliding block, wherein one end of the adjusting screw rod penetrates through the side wall of the sliding groove to be connected with the rotating handle, and the fixing piece is connected to the side wall far away from one side of the rotating handle.

Preferably, the elastic expansion piece comprises a pull rod, one end of the pull rod is connected to the outer side wall of the U-shaped locating frame, which is far away from the opening side of the U-shaped locating frame, the other end of the pull rod penetrates through the side wall of the U-shaped locating frame, which is far away from the opening side of the U-shaped locating frame, a reset spring is connected between the U-shaped locating frame and the U-shaped locating frame, the expansion direction of the reset spring is consistent with the axial direction of the pull rod and is used for driving the U-shaped locating frame to elastically reset relative to the U-shaped locating frame, and the U-shaped locating frame is in the maximum extending position in the natural state of the reset spring.

Preferably, the fixed block is positioned at the upper end of the rotating block, the limiting mechanism comprises a stepped through hole vertically penetrating the fixed block, wherein the aperture in the middle part of the stepped through hole is larger than the aperture at two ends, a limiting plate which is arranged in the stepped through hole, the diameter of the limiting plate is larger than the aperture at two ends of the stepped through hole and smaller than the aperture in the middle part of the stepped through hole, an upper fixed rod and a lower fixed rod which are respectively fixedly connected with the upper surface and the lower surface of the limiting plate, the diameter of the upper fixed rod and the diameter of the lower fixed rod are smaller than the aperture at two ends of the stepped through hole, a limiting spring which is movably sleeved on the upper fixed rod, one end of the limiting spring is contacted with the limiting plate and the other end of the limiting spring is contacted with the step surface at the upper end of the stepped through hole, a ball which is embedded at the bottom of the lower fixed rod, a limiting groove which is arranged on the upper end of the rotating block and is matched with the lower fixed rod, and a limiting release assembly.

Preferably, the limit release assembly comprises a horizontal rod horizontally connected to the top of the upper fixing rod and a horizontal groove arranged on the top of the fixing block and matched with the horizontal rod, and the horizontal rod is positioned in the horizontal groove when the limit spring is in a natural state.

Preferably, the bottoms of the front side wall and the rear side wall of the U-shaped locating rack are equidistantly parallel, and the top of the U-shaped locating rack is outwards expanded in an inclined mode towards two sides.

Preferably, the distance adjusting plate with the same structure as the front side wall is arranged in the U-shaped locating frame, the distance adjusting plate is in sliding connection with the inner side wall of one side, far away from the opening, of the U-shaped locating frame, the distance adjusting screw is rotationally arranged on the distance adjusting plate, one end of the distance adjusting screw is threaded to penetrate through the front side wall of the U-shaped locating frame, and balls are embedded in the opposite side surfaces of the distance adjusting plate and the front side wall of the U-shaped locating frame.

Compared with the prior art, the utility model has the advantages that:

1. According to the utility model, through the matching of the symmetrically arranged U-shaped locating frames and the elastic telescopic members, the bottom of the locating frames is automatically guided to be embedded into the locating frame openings when the templates are lowered, so that the rapid and accurate alignment of the lower openings of the templates and the inner lines of the wall is realized, and the complicated operation of traditional manual repeated adjustment is avoided;

2. According to the utility model, through the design of the rotating block and the limiting mechanism, the limit is released and the elastic telescopic piece is pulled after the template is installed, so that the U-shaped locating frame is retracted and rotates around the rotating shaft to be separated from the template, the mechanical collision during the traditional disassembly is avoided, the operation flow is simplified, and the damage of the template is reduced;

3. According to the utility model, the manual template alignment process is converted into mechanical positioning-adjusting-disengaging integrated operation, and the efficient, accurate and low-consumption formwork construction is realized through a multidirectional adjusting and elastic resetting mechanism, so that the problems of low process efficiency, poor precision and the like in the prior art are fundamentally solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and should not be considered limiting the scope, and that other related drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a quick positioning structure of a U-shaped groove formwork;

FIG. 2 is a schematic diagram of a positioning assembly of a quick positioning structure of a U-shaped groove formwork;

FIG. 3 is a schematic diagram of a fixing member of a quick positioning structure of a U-shaped groove formwork;

FIG. 4 is a schematic view of a transverse adjusting member of a quick positioning structure of a U-shaped groove formwork;

FIG. 5 is a schematic diagram of the connection structure of a U-shaped positioning frame and a U-shaped mounting frame of a quick positioning structure of a U-shaped groove formwork;

FIG. 6 is a schematic diagram of a limiting mechanism of a quick positioning structure of a U-shaped groove formwork;

FIG. 7 is a schematic view of a U-shaped positioning frame of a quick positioning structure of a U-shaped groove formwork;

The device comprises a 1-positioning component, a 2-U-shaped positioning frame, a 3-U-shaped mounting frame, a 4-elastic telescopic piece, a 5-rotating block, a 6-fixed block, a 7-limiting mechanism, an 8-transverse adjusting piece, a 9-fixed piece, a 10-embedded bolt, a 11-triangular plate, a 12-connecting plate, a 13-fixed nut, a 14-mounting plate, a 15-sliding groove, a 16-sliding block, a 17-adjusting screw, a 18-pull rod, a 19-return spring, a 20-stepped through hole, a 21-limiting plate, a 22-upper fixed rod, a 23-lower fixed rod, a 24-limiting spring, a 25-ball, a 26-limiting groove, a 27-horizontal rod, a 28-horizontal groove, a 29-distance adjusting plate, a 30-distance adjusting screw, a 31-T-shaped clamping groove, a 32-T-shaped clamping block, a 33-telescopic rod, a 34-sleeve, a 35-movable rod and a 36-fixed screw.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," "third," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang" and the like, if any, do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intermediate medium, or in communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

It should be noted that the features of the embodiments of the present utility model may be combined with each other without conflict.

As shown in figures 1-2, the quick positioning structure of the U-shaped groove formwork support comprises two groups of positioning assemblies 1 which are symmetrically arranged, wherein each positioning assembly 1 comprises a U-shaped positioning frame 2 with an opening facing the direction of a formwork, a U-shaped mounting frame 3 which is nested outside the U-shaped positioning frame 2 in a sliding manner and is consistent with the opening direction of the U-shaped positioning frame, an elastic telescopic piece 4 connected between the U-shaped positioning frame 2 and the U-shaped mounting frame 3, a rotating block 5 arranged at the front side of the mounting frame, a fixed block 6 rotationally connected with the rotating block 5 through a vertical rotating shaft, a limiting mechanism 7 arranged between the rotating block 5 and the fixed block 6 and capable of locking a horizontal working position, a transverse adjusting piece 8 connected with the fixed block 6 and driving the transverse adjusting piece 8 to move horizontally and transversely, and a fixing piece 9 connected with one side of the transverse adjusting piece 8, wherein the fixing piece 9 is matched with a pre-buried bolt 10, so that the horizontal longitudinal position of the positioning assembly 1 is adjusted.

It should be noted that, the embedded bolt 10 is in the prior art, the position of the anchor bolt is determined according to the position of the side wall in the construction process of the U-shaped groove, then the bottoms of the plurality of groups of anchor bolts are embedded into the ground, the tops of the plurality of groups of anchor bolts obliquely extend out of the ground, and the plurality of groups of anchor bolts are uniformly and equidistantly arranged along the length of the ground to form an embedded part system so as to be connected with the supporting system of the template, thereby realizing the supporting and fixing of the template.

In the construction process of the formwork support, two groups of symmetrical positioning assemblies 1 are connected with a ground embedded bolt 10 through a fixing piece 9, the positions of the positioning assemblies 1 are horizontally and longitudinally adjusted, the opening sides of the U-shaped positioning frames 2 are primarily aligned with the wall edge line of the ground elastic setting, the transverse spacing between the two groups of positioning assemblies 1 is adjusted through a transverse adjusting piece 8, the spacing is matched with the length of the bottom edge of a formwork, the two groups of U-shaped positioning frames 2 can be accurately embedded when the formwork is lowered, when the formwork is hoisted and lowered, two ends of the bottom of the formwork are directly inserted into the openings of the two groups of U-shaped positioning frames 2, the U-shaped positioning frames 2 can retract slightly and adapt to the position deviation of the formwork under the action of dead weight of the formwork, the bottom of the formwork is completely inserted into the openings of the two groups of the U-shaped positioning frames 2, the bottom of the formwork is tightly attached to the inner line of the ground wall, automatic alignment without manual fine adjustment is realized, after temporary support is completed, the limiting mechanism 7 is released, the elastic telescopic piece 4 connected with the U-shaped positioning frames 2 is pulled, the U-shaped positioning frames 2 are enabled to be separated from the U-shaped positioning frames 3 along the U-shaped positioning frames 3, the sliding blocks are completely and are completely separated from the bottom of the formwork support frame through the rotating frame, and the rotating frame is completely and completely rotates around the rotating frame 3, the rotating frame is completely and is completely separated from the side face of the formwork support frame, and is completely separated from the side from the formwork support frame by the rotating frame, and is completely and is rotated; when the adjacent templates are installed, a group of positioning components are installed on one side far away from the installed templates according to the length of the bottom edge of the templates, one side of the templates is tightly attached to the side edge of the installed templates when the templates are hung and lowered, the bottom end of the other side of the templates is embedded into the opening of the U-shaped positioning frame, so that the accurate alignment installation of the adjacent templates can be realized, simple structure, the simple operation, the commonality is strong.

As shown in fig. 3, the fixing member 9 includes two symmetrically arranged isosceles right-angle triangular plates 11, connecting plates 12 respectively and fixedly connected between the top parts and the bottom parts of the oblique sides of the two isosceles right-angle triangular plates 11, and fixing nuts 13 in threaded connection with the embedded bolts and with the bottom surfaces capable of contacting the oblique sides of the triangular plates 11.

The fixing piece 9 forms a frame through the two isosceles right triangle plates 11 and the connecting plate 12, the embedded bolts 10 penetrate through the distance between the triangle plates 11, the bottom surface of the embedded bolts is contacted with the inclined edges of the triangle plates 11 by rotating the fixing nuts 13, the horizontal longitudinal position of the positioning assembly 1 is firmly locked by utilizing the gradient of the inclined edges, and then the rapid fixing and the longitudinal fine adjustment of the positioning assembly 1 are realized.

As shown in fig. 4, the transverse adjusting member 8 includes a horizontal mounting plate 14, a sliding slot 15 formed on a side surface of the mounting plate 14 facing the fixed block 6, a sliding block 16 slidably disposed in the sliding slot 15 and connected with the fixed block 6, and an adjusting screw 17 with two ends rotatably connected to a side wall of the sliding slot 15 and screwed with the sliding block 16, wherein one end of the adjusting screw 17 penetrates through the side wall of the sliding slot 15 to be connected with a rotating handle, and the fixed member 9 is connected to a side wall far away from the rotating handle.

The working principle of the transverse adjusting piece 8 is that the adjusting screw 17 is rotated, and the sliding block 16 is in sliding connection with the sliding groove 15 and in threaded connection with the adjusting screw 17, so that the sliding block 16 is driven to move in the sliding groove 15 by rotation of the adjusting screw 17, and then the fixed block 6, the rotating block 5 connected with the fixed block 6, the U-shaped mounting frame 3 connected with the rotating block 5, the U-shaped positioning frame 2 connected with the U-shaped mounting frame 3 and the elastic telescopic piece 4 are driven to move, and further the transverse distance between the U-shaped positioning frames 2 is matched with the length of the bottom edge of the template, so that the positioning mechanism can flexibly adapt to templates with different lengths.

As shown in FIG. 5, the elastic expansion piece 4 comprises a pull rod 18, one end of which is connected to the outer side wall of the U-shaped locating frame 2, which is far away from the opening side of the U-shaped locating frame, and the other end of which is movably penetrated through the side wall of the U-shaped installing frame 3, which is far away from the opening side of the U-shaped installing frame, and a return spring 19, which is connected between the U-shaped locating frame 2 and the U-shaped installing frame 3, wherein the expansion direction of the return spring 19 is consistent with the axial direction of the pull rod 18 and is used for driving the U-shaped locating frame 2 to elastically return relative to the U-shaped installing frame 3, and the U-shaped locating frame 2 is in the maximum extension position in the natural state of the return spring 19.

When the lifting template is lowered, two ends of the bottom of the template are directly inserted into two groups of U-shaped positioning openings, and because the U-shaped positioning frame 2 is elastically connected with the U-shaped mounting frame 3 through the reset spring 19, when the template is lowered, the U-shaped positioning frame 2 and the U-shaped mounting frame 3 police-treating springs can be slightly compressed to retract and adapt to the deviation of the length of the template, the U-shaped positioning frame 2 can be retracted by pulling the pull rod 18 after construction, the U-shaped positioning frame 2 is enabled to slide backwards to retract along the U-shaped mounting frame 3, the U-shaped mounting frame 3 can rotate around the axial side face by a certain angle in the retracting process, and then the positioning assembly 1 is enabled to be quickly separated from the template, so that the nondestructive rapid dismantling of the positioning structure is realized, and the dismantling process is simplified.

As shown in fig. 6, the fixed block 6 is located at the upper end of the rotating block 5, the limiting mechanism 7 includes a stepped through hole 20 vertically penetrating the fixed block 6 and having a middle aperture larger than that of both ends, a limiting plate 21 disposed in the stepped through hole 20 and having a diameter larger than that of both ends of the stepped through hole 20 and smaller than that of the middle aperture of the stepped through hole 20, an upper fixed rod 22 and a lower fixed rod 23 respectively fixedly connected to the upper surface and the lower surface of the limiting plate 21 and having a diameter smaller than that of both ends of the stepped through hole 20, a limiting spring 24 movably sleeved on the upper fixed rod 22 and having one end in contact with the limiting plate 21 and the other end in contact with the stepped surface of the upper end of the stepped through hole 20, a ball 25 embedded at the bottom of the lower fixed rod 23, a limiting groove 26 disposed at the upper end of the rotating block 5 and adapted to the lower fixed rod 23, and a limiting release assembly, wherein when the limiting spring 24 is in a natural state, the bottom end of the lower fixed rod 23 is inserted into the limiting groove 26, and the U-shaped positioning frame 2 is in a horizontal working position facing the template.

The limit release assembly comprises a horizontal rod 27 horizontally connected to the top of the upper fixing rod and a horizontal groove 28 arranged on the top of the fixing block 6 and matched with the horizontal rod 27, and when the limit spring 24 is in a natural state, the horizontal rod 27 is positioned in the horizontal groove 28.

When the fixed block 6 and the rotating block 5 are required to be locked through the limiting mechanism 7, the rotating block 5 rotates around the rotating shaft, the limiting spring 24 is in a compressed state, when the lower fixing rod 23 rotates to the upper end of the limiting groove 26, the limiting spring 24 loses extrusion force, so that the bottom end of the lower fixing rod 23 is pushed by the limiting plate 21 to be inserted into the limiting groove 26 of the rotating block 5, the relative position of the fixed block 6 and the rotating block 5 is locked, and then the locking of the horizontal working position lock of the U-shaped locating frame is realized, when the locking is required to be released, the horizontal rod 27 is lifted, the limiting plate 21 is driven to overcome the spring force to move upwards, the lower fixing rod 23 is separated from the limiting groove 26, the rotating block 5 is allowed to rotate around the vertical rotating shaft, the limiting quick release of the fixed block 6 and the rotating block 5 is realized, and the dismounting efficiency of the locating assembly 1 is improved.

As shown in fig. 7, in order to guide the template to be quickly inserted into the U-shaped positioning frame, the process of lowering the template is simplified, the convenience of construction is improved, the bottoms of the front and rear side walls of the U-shaped positioning frame 2 are equidistant and parallel, and the top of the U-shaped positioning frame is inclined and expands outwards towards two sides.

The distance adjusting plate 29 is arranged in the U-shaped locating frame 2 and is identical to the front side wall in structure, the distance adjusting plate 29 is in sliding connection with the inner side wall of the U-shaped locating frame 2, which is far away from the opening, a distance adjusting screw 30 is rotatably arranged on the distance adjusting plate 29, one end of the distance adjusting screw 30 penetrates through the front side wall of the U-shaped locating frame 2 through threads, and balls 25 are embedded in opposite side surfaces of the distance adjusting plate 29 and the front side wall of the U-shaped locating frame 2.

The distance adjusting screw 30 is rotated to drive the distance adjusting plate 29 to slide in the U-shaped locating frame, so that the inner space of the locating frame can be adjusted, the distance adjusting screw can be suitable for templates with different thicknesses, the application range is enlarged, and the balls 25 are provided with the functions of effectively reducing sliding friction and having strong practicability.

Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the utility model, and that those skilled in the art will be understood that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (8)

1. The quick positioning structure of the U-shaped groove formwork support is characterized in that two groups of positioning assemblies (1) are symmetrically arranged, each positioning assembly (1) comprises a U-shaped positioning frame (2) with an opening arranged towards the direction of a formwork, a U-shaped mounting frame (3) which is nested outside the U-shaped positioning frame (2) in a sliding mode and is consistent with the opening direction of the U-shaped positioning frame, an elastic telescopic piece (4) connected between the U-shaped positioning frame (2) and the U-shaped mounting frame (3), a rotating block (5) arranged on the front side of the U-shaped mounting frame (3), a fixed block (6) connected with the rotating block (5) in a rotating mode through a vertical rotating shaft, a limiting mechanism (7) arranged between the rotating block (5) and the fixed block (6) and capable of locking a horizontal working position, a transverse adjusting piece (8) connected with the fixed block (6) and driving the transverse adjusting piece to move horizontally and transversely, and a fixing piece (9) connected to one side of the transverse adjusting piece (8) are matched with a pre-embedded bolt (10) to realize adjustment of the horizontal longitudinal position of the positioning assemblies (1).

2. The quick positioning structure of the U-shaped groove formwork support is characterized in that the fixing piece (9) comprises two symmetrically arranged isosceles right-angle triangular plates (11), connecting plates (12) fixedly connected between the top parts and the bottom parts of the oblique sides of the two isosceles right-angle triangular plates (11) respectively, and fixing nuts (13) which are connected with the embedded threads and the bottom surfaces of which can be contacted with the oblique sides of the triangular plates (11), and the distance between the two triangular plates (11) is larger than the diameter of an embedded bolt (10).

3. The quick positioning structure of the U-shaped groove formwork support is characterized in that the transverse adjusting piece (8) comprises a horizontally and transversely arranged mounting plate (14), a sliding groove (15) formed in one side face of the mounting plate (14) towards the fixed block (6), a sliding block (16) arranged in the sliding groove (15) in a sliding mode and connected with the fixed block (6), and an adjusting screw (17) with two ends connected to the side wall of the sliding groove (15) in a rotating mode and connected with the sliding block (16) in a threaded mode, one end of the adjusting screw (17) penetrates through the side wall of the sliding groove (15) to be connected with a rotating handle, and the fixing piece (9) is connected to the side wall far away from one side of the rotating handle.

4. The quick positioning structure of the U-shaped groove formwork support is characterized in that the elastic telescopic piece (4) comprises a pull rod (18) with one end connected to the outer side wall of the U-shaped positioning frame (2) at the side far away from the opening, the other end movably penetrates through the side wall of the U-shaped mounting frame (3) at the side far away from the opening, and a reset spring (19) connected between the U-shaped positioning frame (2) and the U-shaped mounting frame (3), the telescopic direction of the reset spring (19) is consistent with the axial direction of the pull rod (18), the elastic telescopic piece is used for driving the U-shaped positioning frame (2) to elastically reset relative to the U-shaped mounting frame (3), and the U-shaped positioning frame (2) is in the maximum extending position in a natural state of the reset spring (19).

5. The quick positioning structure of the U-shaped groove formwork support is characterized in that the fixing block (6) is located at the upper end of the rotating block (5), the limiting mechanism (7) comprises a step through hole (20) which vertically penetrates through the fixing block (6) and has a middle aperture larger than that of two ends, a limiting plate (21) which is arranged in the step through hole (20) and has a diameter larger than that of the two ends of the step through hole (20) and smaller than that of the middle aperture of the step through hole (20), an upper fixing rod (22) and a lower fixing rod (23) which are fixedly connected to the upper surface and the lower surface of the limiting plate (21) respectively and have a diameter smaller than that of the two ends of the step through hole (20), a limiting spring (24) which is movably sleeved on the upper fixing rod (22) and has one end contacted with the step surface of the upper end of the step through hole (20), a ball (25) which is embedded in the bottom of the lower fixing rod (23), a limiting assembly (26) which is arranged on the upper end surface of the rotating block (5) and is matched with the lower fixing rod (23) and is positioned in a state of being inserted into the lower fixing plate (2), and the limiting assembly is positioned towards the lower fixing plate (2).

6. The quick positioning structure of the U-shaped groove formwork support is characterized in that the limit release assembly comprises a horizontal rod (27) horizontally connected to the top of the upper fixing rod and a horizontal groove (28) arranged on the top of the fixing block (6) and matched with the horizontal rod (27), and when the limit spring (24) is in a natural state, the horizontal rod (27) is positioned in the horizontal groove (28).

7. The rapid positioning structure of the U-shaped groove formwork support of claim 1, wherein bottoms of front and rear side walls of the U-shaped positioning support (2) are equidistant and parallel, and the tops of the front and rear side walls are inclined and expanded to two sides.

8. The quick positioning structure of the U-shaped groove formwork support is characterized in that a distance adjusting plate (29) which is identical to the structure of the front side wall is arranged in the U-shaped positioning support (2), the distance adjusting plate (29) is in sliding connection with the inner side wall of the side, far away from the opening, of the U-shaped positioning support (2), a distance adjusting screw (30) is rotatably arranged on the distance adjusting plate (29), one end of the distance adjusting screw (30) penetrates through the front side wall of the U-shaped positioning support (2) through threads, and balls (25) are embedded in opposite side surfaces of the distance adjusting plate (29) and the front side wall of the U-shaped positioning support (2).