Foundation pit supporting device

Abstract

The utility model discloses a foundation pit supporting device, and relates to the technical field of civil administration power transmission and transformation projects. The supporting structure comprises a plurality of supporting strips which are sequentially arranged from left to right. The supporting strips are arranged in the vertical direction. The front sides of every two adjacent supporting strips are connected in a hinged mode. Mounting shafts are fixed on the front sides of the supporting strips at the leftmost end and the rightmost end in the vertical direction; the mounting shaft is rotationally sleeved with a positioning frame; a notch is vertically formed in the upper end of the front side of the positioning frame; a shaping supporting assembly is arranged between the two positioning frames. The shaping supporting assembly comprises a reinforcing latch arranged in the left-right direction. The left side and the right side of the reinforcing latch are correspondingly inserted into the notches respectively; a through groove is formed in the middle of the reinforcing latch in the left-right direction. A plurality of bases are connected in the through groove in a sliding manner; and the base is in threaded connection with a top fixing screw rod. The supporting device has the advantages that the supporting device can be suitable for supporting the side walls of foundation pits of various arc-shaped structures, and the applicability of the supporting device to complex foundation pit structures is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to civil affairs power transmission and transformation engineering technical field, especially relate to a foundation pit support device. BACKGROUND

[0002] The excavation type foundation is the most common type of foundation in the current power transmission line tower construction. The foundation is formed by manual excavation, and the concrete index is slightly higher than that of the large excavation foundation. However, it can effectively reduce the excavation amount of the foundation pit and the excavation amount of the platform, reduce the damage of construction waste soil to the surface, reduce the damage of construction to the environment, and maximize the protection of the natural landscape around the tower foundation. The construction technology is simple, widely applicable, and reduces the construction cost, but the wall protection measures need to be taken during the excavation of the foundation pit.

[0003] However, the current foundation pit support device is usually only used for supporting the side walls of the planar foundation pit, and cannot perfectly support the side walls of various arc-shaped structures, which has obvious use defects. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problems existing in the above, provides a foundation pit support device, which can be applied to support the side walls of various arc-shaped structures, and improves the applicability to complex foundation pit structures.

[0005] The utility model adopts the technical scheme: provide a kind of foundation pit support device, including the multiple support strips sequentially arranged from left to right;Support strip is arranged along vertical direction;Every adjacent two support strips front side are hingedly connected;The front side of the leftmost and the rightmost support strip is fixed with mounting shaft along vertical direction;Mounting shaft is rotatably sleeved with positioning frame outside;The upper end of the front side of positioning frame is recessed along vertical direction;Two positioning frames are provided with shaping support assembly;

[0006] The shaping support assembly includes a reinforcing latch arranged along the left-right direction;The left and right sides of the reinforcing latch are respectively inserted into the corresponding recesses;A through slot is formed in the middle of the reinforcing latch along the left-right direction;A plurality of bases are slidably connected in the through slot;A top fixing screw is threadedly connected to the base;The top fixing screw penetrates the base, and a buffer rubber ball is fixed to the rear end of the top fixing screw;The number of bases is two less than the number of support strips;The front side of the left and right ends of the reinforcing latch is connected with an inclined strut through a first hinge shaft;The bottom end of the inclined strut is connected with a support seat through a second hinge shaft;The first hinge shaft and the second hinge shaft are arranged along the left-right direction;A grounding hole is formed in the support seat.

[0007] Further optimize the technical scheme, a limiting strip is arranged in the through slot of the foundation pit support device along the left-right direction;The limiting strip is above all bases;An adjusting stud is rotatably connected to the upper end of the limiting strip;The adjusting stud is arranged along the vertical direction and threadedly penetrates the upper end of the reinforcing latch.

[0008] Further optimize the technical scheme, a kind of foundation pit supporting device's limiting strip left and right sides are respectively fixed with guide column along vertical direction;Guide column is slid along vertical direction and penetrates the upper end of reinforcing latch.

[0009] Further optimize the technical scheme, a kind of foundation pit supporting device's base lower end is provided with slot;Slot and reinforcing latch lower part are inserted and slid.

[0010] The beneficial effects of the present application are as follows:

[0011] A plurality of supporting strips arranged from left to right are connected in sequence by corresponding hinges, which can form various arc structures suitable for the side wall of the foundation pit.

[0012] Through the insertion of reinforcing latches and notches on positioning frames, combined with the rotation of top fixing screws and bases, and the left and right sliding of bases in through slots, the top fixing screws can correspondingly top fix the front side of the supporting strips, and this tightening can react on the reinforcing latches, making the reinforcing latches more stable at the notches, so as to position the arc structure formed by the plurality of supporting strips.

[0013] The inclined struts hinged to the left and right sides of the reinforcing latches can be adjusted to support the ground, and the support seat can expand the support area, and the grounding hole on the support seat can facilitate the insertion of the grounding nail, so as to fix the support seat in position and realize the positioning of the supporting strips against the side wall of the foundation pit, achieving stable supporting effect. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The structure of the present application is shown in the figure.

[0015] Figure 2 The structure of the present application is shown in the figure.

[0016] In the figure, 1, supporting strip; 2, mounting shaft; 3, positioning frame; 4, notch; 5, reinforcing latch; 6, through slot; 7, base; 8, top fixing screw; 9, buffer rubber ball; 10, first hinge shaft; 11, inclined strut; 12, second hinge shaft; 13, support seat; 14, grounding hole; 15, limiting strip; 16, adjusting stud; 17, guide column; 18, slot. DETAILED DESCRIPTION

[0017] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0018] As Figure 1As shown, a foundation pit support device includes multiple support strips 1 arranged from left to right; the support strips 1 are arranged vertically; the front sides of each pair of adjacent support strips 1 are hinged together; the front sides of the leftmost and rightmost support strips 1 are each fixed with a mounting shaft 2 along the vertical; a positioning frame 3 is rotatably sleeved on the mounting shaft 2; a notch 4 is opened vertically at the upper end of the front side of the positioning frame 3; a fixed support assembly is provided between the two positioning frames 3.

[0019] like Figure 2 As shown, the shaping support assembly includes a reinforcing latch 5 arranged in the left-right direction; the left and right sides of the reinforcing latch 5 are respectively inserted into the corresponding notches 4; a through groove 6 is opened in the middle of the reinforcing latch 5 in the left-right direction; multiple bases 7 are slidably connected in the through groove 6; a top fixing screw 8 is threadedly connected to the base 7; the top fixing screw 8 passes through the base 7, and a buffer rubber ball 9 is fixed at the rear end of the top fixing screw 8; the number of bases 7 is two less than the number of support strips 1; the front sides of the left and right ends of the reinforcing latch 5 are respectively connected to diagonal braces 11 through a first hinge shaft 10; the bottom end of the diagonal brace 11 is connected to a support seat 13 through a second hinge shaft 12; the first hinge shaft 10 and the second hinge shaft 12 are both arranged in the left-right direction; a grounding hole 14 is opened on the support seat 13.

[0020] During the construction of power transmission line towers, the excavated pits require proper support. When the sidewalls of the excavated pits are curved, traditional flat support devices are clearly insufficient to adequately support them. Therefore, this technical solution utilizes multiple support strips 1 to form the entire support surface. The support strips 1 are hinged together to adjust the overall shape of the support surface, creating a curved surface to enhance its adaptability to the curved pit sidewalls. By individually supporting and defining the support strips 1, the pit sidewalls are securely supported.

[0021] The sequential hinged arrangement of the support strips 1 allows for adjustment to adapt to both planar and various curved surfaces of the pit sidewalls, offering good versatility. After adjusting the support strips 1 to fit snugly against the pit sidewall, the rotation of the positioning frame 3 and the mounting shaft 2 ensures that the notches 4 on the two positioning frames 3 correspond to each other, guaranteeing that the reinforcing latches 5 can be inserted into the corresponding notches 4 on both sides. Furthermore, the hinge between the diagonal brace 11 and the first hinge shaft 10, and the rotation of the support base 13 and the second hinge shaft 12, allow the support base 13 to support the ground and the diagonal brace 11 to support the reinforcing latches 5. By inserting a grounding nail into the grounding hole 14, the support base 13 is firmly positioned against the ground, and the reinforcing latches 5 stably support the support strips 1 at both ends against the pit sidewall.

[0022] After the above operation, through the sliding of the base 7 and the through slot 6, the screwing of the top fixing screw 8 and the base 7, the buffer rubber ball 9 at the front end of the top fixing screw 8 can be respectively top pressed on each supporting strip 1 (except the supporting strips 1 at the left and right ends), and the arc-shaped structure formed by the plurality of supporting strips 1 is positioned, thereby realizing the stable support of the side wall of the foundation pit. The buffer rubber ball 9 has the effect of buffering and noise reduction, and avoids the problems of wear and tear and friction noise of the supporting strip 1 caused by friction.

[0023] As shown in Figure 2 , the limiting strip 15 is arranged in the through slot 6 along the left-right direction; the limiting strip 15 is above all the bases 7; the adjusting screw column 16 is rotationally connected to the upper end of the limiting strip 15; the adjusting screw column 16 is arranged along the vertical direction and is screwed through the upper end of the reinforcing latch 5.

[0024] Through the screwing of the adjusting screw column 16, the limiting strip 15 can be pressed on the upper end of all the bases 7, thereby further top pressing and positioning the base 7 and improving the stability of the position of the top fixing screw 8 in the left-right direction.

[0025] As shown in Figure 2 , the guide column 17 is fixed on the left and right sides of the limiting strip 15 along the vertical direction; the guide column 17 is slidably penetrated through the upper end of the reinforcing latch 5 along the vertical direction. The guide column 17 guides the movement of the limiting strip 15, and through the limitation of the left and right sides of the limiting strip 15, the longer limiting strip 15 can ensure sufficient pressure positioning effect on the bases 7 on the left and right sides.

[0026] As shown in Figure 2 , the base 7 is provided with the insertion slot 18 at the lower end; the insertion slot 18 is inserted and slid with the lower part of the reinforcing latch 5. The base 7 can be taken out from the through slot 6, so that the carrying and transportation of the device after disassembly are more convenient.

[0027] It can be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the utility model.

Claims

1. A foundation pit support device characterized by: It includes a plurality of supporting strips (1) arranged from left to right; the supporting strips (1) are arranged vertically; every two adjacent supporting strips (1) are connected by a hinge on the front side; the leftmost and rightmost supporting strips (1) are fixed with mounting shafts (2) on the front side in the vertical direction; the mounting shafts (2) are rotatably sleeved with positioning racks (3); the upper end of the front side of the positioning rack (3) is provided with a notch (4) in the vertical direction; a shaping support assembly is arranged between the two positioning racks (3); The shaping support assembly comprises reinforcing latches (5) arranged in the left-right direction; the left and right sides of the reinforcing latches (5) are respectively inserted into the notches (4); the middle part of the reinforcing latches (5) is provided with a through slot (6) in the left-right direction; a plurality of bases (7) are slidably connected in the through slot (6); the bases (7) are threadedly connected with top fixing screws (8); the top fixing screws (8) penetrate the bases (7), and the rear ends of the top fixing screws (8) are fixed with buffer rubber balls (9); the number of the bases (7) is two less than the number of the supporting strips (1); the front sides of the left and right ends of the reinforcing latches (5) are respectively connected with inclined struts (11) through first hinge shafts (10); the bottom ends of the inclined struts (11) are connected with support seats (13) through second hinge shafts (12); the first hinge shafts (10) and the second hinge shafts (12) are arranged in the left-right direction; the support seats (13) are provided with grounding holes (14).

2. A foundation pit support device according to claim 1, characterized in that: A limiting strip (15) is arranged in the left-right direction in the through slot (6); the limiting strip (15) is above all the bases (7); the upper end of the limiting strip (15) is rotatably connected with an adjusting stud (16); the adjusting stud (16) is arranged in the vertical direction and threadedly penetrates the upper end of the reinforcing latch (5).

3. A foundation pit support device according to claim 2, characterized in that: The left and right sides of the limiting strip (15) are respectively fixed with guide columns (17) in the vertical direction; the guide columns (17) slide through the upper end of the reinforcing latch (5) in the vertical direction.

4. A foundation pit support device according to claim 2, characterized in that: The lower end of the base (7) is provided with a slot (18); the slot (18) is inserted into the lower part of the reinforcing latch (5) and slides.

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