CN116006020A - Road foundation pit enclosing structure for road construction - Google Patents

Abstract

The utility model belongs to the technical field of road construction and specifically relates to a road foundation pit encloses fender structure for road construction, including two bracing pieces, be provided with the multiunit between the bracing piece and be used for enclosing the pin that keeps off, be provided with the intermediate lever between the bracing piece, the multiunit the pin sets up respectively in the both sides of intermediate lever, multiunit pin between intermediate lever and the bracing piece arranges along vertical direction and sets up, every group the pin includes connecting rod one and connecting rod two, connecting rod one and connecting rod two rotate to be connected, one end and the intermediate lever rotation that the connecting rod one deviates from connecting rod two are connected, one end and the bracing piece rotation that the connecting rod two deviates from connecting rod one are connected. The application has the effect of promoting the efficiency of construction.

Description

A road foundation pit enclosure structure for road construction

technical field

The present application relates to the technical field of road construction, in particular to a road foundation pit enclosure structure for road construction.

Background technique

The road foundation pit refers to the earth pit excavated at the position of the foundation design on the road in the municipal road construction for construction. During the construction process, in order to ensure construction safety, temporary enclosure structures are often used to enclose the foundation pit. The enclosure structure can not only defend the periphery of the construction, prevent pedestrians from entering the construction area, but also protect the safety of construction personnel. Safety.

The enclosure structure of the road in the related art includes two vertical support rods, and a horizontal support rod is arranged between the two vertical support rods. The two ends of the horizontal support rods are respectively connected with the two vertical support rods. A protective rod is provided, and the protective rod is arranged along the vertical direction. A base is provided at one end of the vertical support rod close to the ground, and the vertical support rod is placed on the ground through the base. Between the horizontal support bar and the vertical support bar, the protective bar and the horizontal support bar are all fixedly connected by bolts before. Place the vertical support rods at the edge of the road foundation pit to enclose the foundation pit.

In the related technology mentioned above, each component is fixedly connected by bolts, which is inconvenient to disassemble and install, and affects the construction efficiency.

Contents of the invention

In order to improve construction efficiency, the present application provides a road foundation pit enclosure structure for road construction.

A road foundation pit enclosure structure for road construction provided by the application adopts the following technical scheme:

A road foundation pit enclosure structure for road construction, comprising two support rods, multiple sets of retaining rods for enclosure are arranged between the support rods, intermediate rods are arranged between the support rods, and the multiple sets of The stop rods are respectively arranged on both sides of the middle rod, and multiple sets of stop rods are arranged in a vertical direction between the middle rod and the support rod, and each set of stop rods includes a connecting rod one and a connecting rod two. The connecting rod one and the connecting rod two are rotationally connected, the end of the connecting rod one away from the connecting rod two is rotationally connected with the intermediate rod, and the end of the connecting rod two away from the connecting rod one is rotationally connected with the support rod.

By adopting the above technical solution, the connecting rod 1 and the connecting rod 2 are rotatably connected, and the connecting rod 1 is rotatably connected to the intermediate rod, and the connecting rod 2 is rotatably connected to the supporting rod, so that the supporting rod can be moved to abut against the side of the intermediate rod , the whole is put away to reduce the occupied space, which is convenient for carrying and improves the construction efficiency.

Optionally, the end of the middle rod is rotatably provided with a fixed sleeve, the side of the fixed sleeve close to the middle rod is provided with a baffle plate, the end of the support rod close to the fixed sleeve is provided with a fixed plate, and the fixed sleeve The plate and the baffle are abutted against one side close to the support rod for fixing the support rod.

By adopting the above technical solution, when retracting, the support rod moves to abut against the side of the middle rod, and then the fixed sleeve is rotated, and the fixed sleeve drives the baffle to move to the side away from the middle rod from the fixed plate, and at the same time the baffle and the fixed The plates are abutted to fix the position of the fixing plate, and then fix the support rod.

Optionally, both the baffle plate and the fixed plate are arc-shaped, the center of circle of the fixed plate and the rotation center of the fixed sleeve are arranged on the same straight line, the baffle plate and the fixed plate have the same radius, and the fixed plate The outer side of the fixing plate abuts against the inner side of the baffle, the outer side of the fixing plate is provided with a threaded strip, and the inner side of the baffle is provided with a threaded groove matching the threaded bar.

By adopting the above technical scheme, when the fixed sleeve is rotated, the baffle plate and the fixed plate are driven to be threadedly connected, and at the same time the fixed sleeve is threadedly connected to the middle rod, so as to improve the stability of the cooperation between the baffle plate and the fixed plate, and reduce the looseness of the support rod The phenomenon.

Optionally, one side of the baffle is provided with a guide plate, the guide plate is arc-shaped, the inner side of the guide plate is set toward the center of the fixed sleeve, and one side of the guide plate is connected to the baffle , and the corresponding side is arranged obliquely along the direction away from the center of the fixed sleeve.

By adopting the above-mentioned technical scheme, when the fixed sleeve is rotated, the guide plate is driven to rotate, the side of the guide plate and the side of the fixed plate abut, and the fixed sleeve is continuously rotated, and the support rod is driven by different positions on the guide plate abutting against the fixed plate. Moving in the direction toward the middle rod, when the baffle plate and the fixed plate are rotated to fit, the support rod and the middle rod abut to improve the stability of the cooperation between the support rod and the middle rod.

Optionally, the middle rod is provided with a mounting groove, the end of the connecting rod one extends into the mounting groove, the end of the connecting rod one close to the mounting groove is provided with a rotating sleeve, and the intermediate rod is close to the fixed sleeve One end of one end is provided with a through groove, and the through groove communicates with the installation groove, and a limit assembly for fixing the rotating sleeve is arranged in the through groove.

By adopting the above-mentioned technical solution, when the enclosure is unfolded, the position of the rotating sleeve is fixed by the limit assembly, and then the position of the connecting rod 1 is fixed, so that the phenomenon of the rotation of the connecting rod 1 relative to the middle rod is reduced, thereby improving the overall The stability of the enclosure.

Optionally, the side of the rotating sleeve is provided with a plurality of slots around its center, and the limiting assembly includes a clamping plate and a push rod, and the push rod and the clamping plate slide in the through groove toward the rotating sleeve It is provided that the clamping plate is connected to the push rod, and the end of the push rod away from the clamping plate extends to the outside of the middle rod, and the clamping plate and the clamping groove are fastened to fix the rotating sleeve.

By adopting the above-mentioned technical scheme, when the rotating sleeve needs to be fixed, the push rod is moved, and the push rod drives the clamping plate to move to engage with the card slot, so as to reduce the rotation of the rotating sleeve in the installation groove, and further adjust the position of the rotating sleeve. to fix.

Optionally, an intermediate ring is provided on the side of the fixed sleeve close to the intermediate rod, the center of the intermediate ring and the center of the fixed sleeve are arranged concentrically, the end of the push rod extends to the inner side of the intermediate ring, and the There is a push groove on the side of the push rod close to the middle ring, and the side of the middle ring away from the fixed sleeve is bent toward the push rod. The bent part of the middle ring is clamped in the push groove and bent The part is rotated and set in the push groove.

By adopting the above technical scheme, the fixed sleeve and the intermediate rod are threadedly connected. When the fixed sleeve rotates, the fixed sleeve moves relative to the end of the intermediate rod, and the fixed sleeve drives the push rod to move through the intermediate ring, thereby adjusting the position of the clamping plate.

Optionally, the push rod is arranged along the length direction of the middle rod, and there are multiple clamping plates corresponding to the multiple sets of connecting rods, and multiple clamping plates are connected to the push rod at the same time.

By adopting the above technical solution, multiple pallets are connected to the push rod at the same time, and when the push rod moves, the multiple pallets are driven to move at the same time, thereby simultaneously fixing the positions of multiple rotating sleeves, thereby improving installation efficiency.

Optionally, a relief slot for placing the first connecting rod is provided on the side of the middle rod close to the support rod.

By adopting the above-mentioned technical scheme, when the side of the support rod and the middle rod abut, the connecting rod rotates into the relief groove, which reduces the phenomenon of the middle rod interfering with the abutment of the support rod and the middle rod, and improves the cooperation between the support rod and the middle rod. stability.

Optionally, a support base is provided at one end of the support rod close to the ground, and an insertion rod is provided at one end of the support base close to the support rod, and a slot is opened on the end of the support rod close to the support base, and the insertion rod Connect with the threaded socket.

By adopting the above technical scheme, a support seat is provided on the support rod, and the insertion rod and the slot are threadedly connected, and the support seat is placed on the ground to support the support rod.

In summary, the present application includes at least one of the following beneficial technical effects:

1. Turn the first connecting rod and the second connecting rod to contact the support rod and the middle rod, and at the same time, the first connecting rod is rotated into the relief slot, and then the position of the support rod is fixed by the fixing sleeve, so as to reduce the overall occupied space for carrying , At the same time, the clamping plate and the clamping groove are set to fix the connecting rod one, so as to control the position of the rotating sleeve, simplify the installation operation, and improve the construction efficiency.

Description of drawings

Fig. 1 is a structural schematic diagram of a road foundation pit enclosure structure for road construction according to an embodiment of the present application.

Fig. 2 is a partial view of a road foundation pit enclosure structure for road construction according to an embodiment of the present application.

Fig. 3 is a view of the retracted state of the support pole and the middle pole in the enclosure structure of the road foundation pit for road construction according to the embodiment of the present application.

Fig. 4 is a structural view of the fixing plate in the enclosure structure of the road foundation pit for road construction according to the embodiment of the present application.

Fig. 5 is a cutaway view of the middle rod in the road foundation pit enclosure structure for road construction according to the embodiment of the present application.

Fig. 6 is a structural view of the rotating sleeve in the enclosure structure of the road foundation pit for road construction according to the embodiment of the present application.

Fig. 7 is a structural view of the locking groove in the retaining structure of the road foundation pit for road construction according to the embodiment of the present application.

Fig. 8 is a structural view of the limit assembly in the retaining structure of the road foundation pit for road construction according to the embodiment of the present application.

Fig. 9 is a structural view of another placement state of the road foundation pit enclosure structure for road construction according to the embodiment of the present application.

Reference signs: 1, support rod; 11, slot; 2, retaining rod; 21, connecting rod one; 22, connecting rod two; 3, middle rod; 31, installation groove; 32, through groove; 33, give way Groove; 4, support seat; 41, inserting rod; 5, fixed sleeve; 51, intermediate ring; 6, baffle plate; 61, thread groove; 62, guide plate; 7, fixed plate; 71, thread bar; 8, rotation Cover; 81, slot; 9, limit assembly; 91, clamp; 911, cover plate; 912, inner plate; 913, elastic member; 92, push rod; 921, push groove.

Detailed ways

The present application will be described in further detail below in conjunction with accompanying drawings 1-9.

The application discloses a road foundation pit enclosure structure for road construction. Referring to Fig. 1 and Fig. 2, the road foundation pit enclosure structure for road construction includes two support rods 1, and stop rods 2 are arranged between the support rods 1, and there are multiple groups of stop rods 2, and multiple groups of stop rods 2 are arranged on Between support rods 1. During construction, the support bar 1 is placed on the outside of the road foundation pit, and the foundation pit is enclosed by the stop bar 2 .

Referring to Fig. 1 and Fig. 2, an intermediate rod 3 is arranged between two support rods 1, and multiple groups of blocking rods 2 are respectively arranged on both sides of the intermediate rod 3, and multiple groups of blocking rods between the intermediate rod 3 and the supporting rod 1 The rods 2 are arranged in a row along the vertical direction. In this embodiment, three groups of blocking rods 2 are arranged between the middle rod 3 and the support rod 1 , that is, three groups are respectively arranged on both sides of the middle rod 3 . Every group of retaining rod 2 comprises connecting rod one 21 and connecting rod two 22, and connecting one and connecting rod two 22 are connected in rotation, and connecting rod one 21 is away from an end of connecting rod two 22 and intermediate rod 3 is connected in rotation, and connecting rod two 22 deviates from connecting rod One end of the rod one 21 is connected with the support rod 1 . When in use, adjust the distance between the middle rod 3 and the supporting rod 1, and simultaneously expand the first connecting rod 21 and the second connecting rod 22, and then place the supporting rod 1 on the ground. When needing to carry simultaneously, rotating connecting rod one 21 and connecting rod two 22 get final product that support rod 1 and middle rod 3 are put away, and the overall occupied space is reduced, so that carry.

Referring to Fig. 2 and Fig. 3, a support seat 4 is provided at one end of the support bar 1 close to the ground, an insertion rod 41 is provided at the end of the support bar 4 close to the support bar 1, and a The slot 11, the insertion rod 41 and the slot 11 are threadedly connected. The support base 4 is connected to the slot 11 through the insertion rod 41, and then the support base 4 is fixed on the support pole 1, so as to improve the stability of the support pole 1 when placed on the ground.

Referring to Fig. 3 and Fig. 4, in order to facilitate carrying, a fixed sleeve 5 is arranged on the end of the middle rod 3 close to the ground, and a baffle plate 6 is arranged on the side of the fixed sleeve 5 near the middle rod 3. One end of the ground is provided with a fixed plate 7 , and the fixed plate 7 abuts against the side of the baffle plate 6 close to the support rod 1 . The baffle plate 6 abuts against the fixing plate 7. At this time, the side of the support rod 1 abuts against the side of the middle rod 3 to fix the support rod 1 and reduce the shaking of the support rod 1 during the carrying process.

Referring to Fig. 3 and Fig. 4, in order to enhance the stability of cooperation between the baffle plate 6 and the fixed plate 7, the fixed sleeve 5 is rotated and arranged on the middle rod 3, the baffle plate 6 and the fixed plate 7 are both arc-shaped, and the fixed plate 7 The center of circle of the center of circle and the center of rotation of the fixed sleeve 5 are set on the same straight line. After the middle rod 3 and the support rod 1 abut, the center of circle of the fixed plate 7 coincides with the center of rotation of the fixed sleeve 5, that is, the center of the circle of the fixed plate 7 and the baffle plate 6 The radius is the same, the outside of the fixed plate 7 abuts against the inner side of the baffle plate 6, the outer side of the fixed plate 7 is provided with a threaded bar 71, and the inner side of the baffle plate 6 is provided with a threaded groove 61 corresponding to the threaded bar 71, and the threaded bar 71 It is threadedly connected with the thread groove 61, and the fixed sleeve 5 is threadedly connected with the support rod 1. Rotate the fixed sleeve 5, the baffle plate 6 rotates to the fixed plate 7, and fix the baffle plate 6 and the fixed plate 7 through the cooperation of the threaded strip 71 and the threaded groove 61, while the threaded strip 71 and the threaded groove 61 cooperate and the fixed sleeve 5 is relatively supported The rod 1 moves, and after the baffle 6 and the fixed plate 7 are completely abutted, the end of the fixed sleeve 5 and the support rod 1 are abutted and fixed, so as to reduce the phenomenon that the baffle 6 rotates relative to the fixed plate 7, and then the support rod 1 and the support rod 1 are lifted. The stability of the fit between the intermediate rods 3 . There are two groups of baffles 6 and fixed plates 7, the two fixed plates 7 are respectively arranged on the two support rods 1, the two baffles 6 are respectively arranged corresponding to the two support rods 1, and the two baffles 6 are fixed around the The center of the sleeve 5 is symmetrically arranged, that is, when the fixed sleeve 5 is rotated, the two baffles 6 cooperate with the two fixing plates 7 respectively, thereby fixing the two support rods 1 at the same time.

Referring to Fig. 4, in order to facilitate the cooperation between the baffle plate 6 and the fixed plate 7, a guide plate 62 is provided on one side of the baffle plate 6, the guide plate 62 is arc-shaped, and the inner side of the guide plate 62 is set toward the center of the fixed sleeve 5 One side of the guide plate 62 is connected to the baffle plate 6 , and the other side is inclined away from the center of the fixing sleeve 5 . When fixing the support rod 1, turn the fixed sleeve 5, the fixed sleeve 5 drives the guide plate 62 to rotate, the guide plate 62 rotates to abut against the edge of the fixed plate 7, and continues to rotate the fixed sleeve 5, and the fixed plate 7 is driven by the guide plate 62 Move toward the middle rod 3, while the support rod 1 moves toward the middle rod 3 until the support rod 1 moves to abut against the side of the middle rod 3, reducing the gap between the support rod 1 and the middle rod 3, and at the same time facilitates the support rod 1 position is fixed.

Referring to Fig. 5 and Fig. 6, a mounting groove 31 is provided on the middle rod 3, the end of the connecting rod 21 extends into the mounting groove 31, and a rotating sleeve 8 is arranged at the end of the connecting rod 21, and the rotating sleeve 8 is in the The installation groove 31 rotates and arranges, and the end of connecting rod one 21 is connected with rotating sleeve 8, and two rotating sleeves 8 are provided with, and two rotating sleeves 8 are connected with two connecting rods one 21 respectively, and the two rotating sleeves 8 The axes are arranged on the same straight line, and a plurality of draw-in grooves 81 are provided around the center of the rotating sleeve 8, and a through groove 32 is provided at the end of the middle rod 3 close to the fixed sleeve 5, and the through groove 32 communicates with the installation groove 31. A limiting component 9 for fixing the position of the rotating sleeve 8 is arranged in the through slot 32 , and the limiting component 9 is connected with the locking groove 81 . After the first connecting rod 21 and the second connecting rod 22 are unfolded, the position of the rotating sleeve 8 is fixed by the limit assembly 9, and then the positions of the first connecting rod 21 and the second connecting rod 22 are fixed to improve the stability of the overall enclosure sex.

Referring to Fig. 6 and Fig. 7, the limit assembly 9 includes a clamping plate 91 and a push rod 92, the push rod 92 and the clamping plate 91 are slidably arranged in the through groove 32 in the direction toward the rotating sleeve 8, and the clamping plate 91 and the push rod 92 are connected , the end of the push rod 92 away from the clamping plate 91 extends to the outside of the middle rod 3 , and the clamping plate 91 and the clamping groove 81 are snapped together. The position of the rotating sleeve 8 is fixed by moving the push rod 92 to drive the clamping plate 91 to engage with the clamping groove 81 .

Referring to Fig. 6 and Fig. 7, an intermediate ring 51 is arranged on the side of the fixed sleeve 5 close to the intermediate rod 3, the center of the intermediate ring 51 and the center of the fixed sleeve 5 are arranged concentrically, and the end of the push rod 92 extends to the intermediate ring 51 On the inner side, a push groove 921 is opened on the side of the push rod 92 close to the middle ring 51, and the side of the middle ring 51 away from the fixed sleeve 5 is bent along the direction toward the push rod 92, and the bending part of the middle ring 51 is clamped on the push rod 92. inside the slot 921 , and the bent part is rotated in the pushing slot 921 . After the connecting rod one 21 is unfolded, the fixed sleeve 5 is rotated, and the fixed sleeve 5 moves relative to the middle rod 3, and at the same time, the intermediate ring 51 drives the push rod 92 to move in the through groove 32, thereby adjusting the position of the clamping plate 91.

Referring to Fig. 6 and Fig. 7, the push rod 92 is arranged along the length direction of the middle rod 3, and a plurality of clamping plates 91 and multiple sets of connecting rods 121 are correspondingly arranged, and the push rod 92 is connected with a plurality of clamping plates 91 at the same time. When 92 moves, drive a plurality of clamping plates 91 to move simultaneously, so that the positions of a plurality of connecting rods-21 are fixed simultaneously.

Referring to Fig. 7 and Fig. 8, the clamping plate 91 includes a cover plate 911 and an inner plate 912, the cover plate 911 is fastened with the slot 81, the inner plate 912 is connected with the push rod 92, and the inner plate 912 is inside the cover plate 911 along the push rod 92 The direction of sliding is slidably set, and elastic piece 913 is arranged in cover plate 911, and elastic piece 913 can be set as spring, and one end of spring is connected with cover plate 911 internally, and the other end is connected with the side of inner plate 912. 8. When fixing, the push rod 92 moves to abut against the side of the rotating sleeve 8. At this time, the elastic member 913 is compressed, and the connecting rod 121 is continued to be rotated. , the elastic member 913 drives the cover plate 911 to buckle with the slot 81 to fix the rotating cover 8 . In combination with Figure 9, the angle between the first connecting rod 21 and the second connecting rod 22 can be changed, and the two support rods 1 can be placed on different levels, such as steps or unevenness on the ground, so as to be suitable for more construction conditions under the fence

Referring to Fig. 1 and Fig. 5, a relief groove 33 is provided on the side of the middle rod 3 close to the support rod 1. When the support rod 1 and the middle rod 3 abut, the connecting rod one 21 rotates into the relief groove 33, reducing The first connecting rod 21 interferes with the abutment of the support rod 1 and the middle rod 3 , which improves the stability of the cooperation between the support rod 1 and the middle rod 3 .

The implementation principle of the present application is: rotate the first connecting rod 21 and the second connecting rod 22 to expand the supporting rod 1, then install the supporting seat 4 on the supporting rod 1, place the supporting rod 1 on the ground through the mounting seat, and carry it when necessary , turn the connecting rod one 21 into the relief groove 33, then move the support rod 1 to the middle rod 3, rotate the fixing sleeve 5, abut the baffle plate 6 and the fixing plate 7, and fix the support rod 1, and at the same time Drive the push rod 92 to move, so that the cover plate 911 and the card slot 81 are fastened, and the rotating sleeve 8 is fixed, that is, the connecting rod one 21 is fixed, and the space occupied by the support rod 1 and the middle rod 3 is reduced, so that it can be carried and lifted. construction efficiency.

All of the above are preferred embodiments of the application, and are not intended to limit the protection scope of the application. Therefore, all equivalent changes made according to the structure, shape, and principle of the application should be covered by the protection scope of the application. Inside.

Claims (10)

1. A road foundation pit enclosure structure for road construction, comprising two support rods (1), characterized in that multiple sets of retaining rods (2) for enclosure are arranged between the support rods (1) , intermediate rods (3) are arranged between the support rods (1), multiple sets of retaining rods (2) are respectively arranged on both sides of the intermediate rods (3), the intermediate rods (3) and the supporting rods ( 1) Multiple sets of stop rods (2) are arranged vertically, and each set of stop rods (2) includes connecting rod one (21) and connecting rod two (22), and the connecting rod one (21 ) and connecting rod two (22) are rotationally connected, the end of the connecting rod one (21) away from the connecting rod two (22) is rotationally connected with the middle rod (3), and the connecting rod two (22) is away from the connecting rod one ( One end of 21) is rotationally connected with the support rod (1). 2. The road foundation pit enclosure structure for road construction according to claim 1, characterized in that: the end of the middle rod (3) is rotatably provided with a fixed sleeve (5), and on the fixed sleeve (5) A baffle (6) is provided on the side close to the middle rod (3), a fixed plate (7) is provided on the end of the support rod (1) close to the fixed sleeve (5), and the fixed plate (7) and the baffle (6) The side close to the support rod (1) abuts to fix the support rod (1). 3. The road foundation pit enclosure structure for road construction according to claim 2, characterized in that: the baffle (6) and the fixing plate (7) are both arc-shaped, and the fixing plate (7) The center of the circle and the center of rotation of the fixed sleeve (5) are set on the same straight line, the radius of the baffle (6) and the fixed plate (7) are the same, the outer side of the fixed plate (7) and the inner side of the baffle (6) abutting, the fixed sleeve (5) and the middle rod (3) are threadedly connected, the outer side of the fixed plate (7) is provided with a threaded strip (71), and the inner side of the baffle (6) is provided with a thread The threaded groove (61) that fits the bar (71). 4. The road foundation pit enclosure structure for road construction according to claim 3, characterized in that: one side of the baffle (6) is provided with a guide plate (62), and the guide plate (62) is round Arc-shaped, the inner side of the guide plate (62) is set toward the center of the fixed sleeve (5), one side of the guide plate (62) is connected to the baffle (6), and the corresponding side is away from the fixed sleeve (5) The direction of the center is inclined to set. 5. The road foundation pit enclosure structure for road construction according to claim 3, characterized in that: the middle rod (3) is provided with a mounting groove (31), and the end of the connecting rod one (21) Extending into the installation groove (31), the end of the connecting rod one (21) close to the installation groove (31) is provided with a rotating sleeve (8), and the end of the middle rod (3) close to the fixed sleeve (5) is provided with a A through groove (32), the through groove (32) communicates with the installation groove (31), and the limit assembly (9) for fixing the rotating sleeve (8) is arranged in the through groove (32). 6. The road foundation pit enclosure structure for road construction according to claim 5, characterized in that: the side of the rotating sleeve (8) is provided with a plurality of slots (81) around its center, and the limit assembly (9) It includes a clamping plate (91) and a push rod (92). The push rod (92) and the clamping plate (91) are slidably set in the through groove (32) in the direction toward the rotating sleeve (8), and the The clamping plate (91) is connected with the push rod (92). The end of the push rod (92) away from the clamping plate (91) extends to the outside of the middle rod (3). The clamping plate (91) and the clamping groove (81 ) snap fit is used to fix the rotating sleeve (8). 7. The road foundation pit enclosure structure for road construction according to claim 6, characterized in that: an intermediate ring (51) is provided on the side of the fixed sleeve (5) close to the intermediate rod (3), and the The center of the intermediate ring (51) and the center of the fixed sleeve (5) are set concentrically, the end of the push rod (92) extends to the inner side of the intermediate ring (51), and the push rod (92) is close to the intermediate ring (51) ) is provided with a push groove (921), and the side of the intermediate ring (51) away from the fixed sleeve (5) is bent along the direction toward the push rod (92), and the bending of the intermediate ring (51) The part is clamped in the push groove (921), and the bending part is rotated in the push groove (921). 8. The road foundation pit enclosure structure for road construction according to claim 7, characterized in that: the push rod (92) is arranged along the length direction of the middle rod (3), and the clamping plate (91) and multiple There are multiple connecting rods one (21) correspondingly, and multiple clamping plates (91) are connected to the push rod (92) at the same time. 9. The road foundation pit enclosure structure for road construction according to claim 3, characterized in that: the side of the middle rod (3) close to the support rod (1) is provided with a connecting rod one (21) the give way slot (33). 10. The road foundation pit enclosure structure for road construction according to claim 1, characterized in that: a support seat (4) is provided at one end of the support rod (1) close to the ground, and the support seat (4) is close to One end of the support rod (1) is provided with an insertion rod (41), and the end of the support rod (1) close to the support base (4) is provided with a slot (11), and the insertion rod (41) and the slot ( 11) Thread fit connection.

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