Sectional type dowel bar for deep foundation pit supporting and replacing support

Abstract

The utility model relates to the technical field of sectional dowel bars, and discloses a sectional dowel bar of a deep foundation pit supporting and replacing support, which comprises two connecting rods used for being fixedly connected with a beam plate and a connecting plate arranged between the two connecting rods, and the connecting rods comprise rod bodies and end plates fixed at two ends of the rod bodies. Positioning mechanisms are arranged on the front side and the rear side, facing the end plate of the connecting plate, of the connecting rod, the end plate and the connecting plate are limited front and back through the positioning mechanisms, a guide wheel is arranged in the middle of the connecting plate, and the guide wheel is attached to one side of the end plate in a rolling mode. Through cooperative arrangement of the connecting rods and the end plates, the end plates can enlarge the contact surface between the connecting rods and the reinforcement cage and improve the stability during supporting, and through cooperative arrangement of the end plates, the connecting plates and fasteners, the two end plates can be fixed to the two sides of the connecting plates to support the structures on the two sides.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of segmented force transmission rod, and specifically relates to a deep foundation pit support dismantling and replacing support segmented force transmission rod. BACKGROUND

[0002] In building engineering, the construction links such as foundation pit support and underground structure replacing support often need to use force transmission rods as temporary or permanent load transmission members to ensure structural stability and construction safety. Traditional force transmission rods are mostly integral rigid structures which are welded or bolted to the reinforcement framework or support system.

[0003] At present, there are three kinds of conventional construction processes for force transmission rods. The first one is to use two end plates welded at the ends of an integral H-shaped steel as a force transmission rod for construction. This process has the problems of large amount of single material, difficulty in carrying; the second one is to use two end plates welded at the ends of a post-poured strip connected with an I-shaped steel, and four steels evenly welded on the end plates as a force transmission rod. This process saves materials but has the problems of complex construction and high labor cost; the third one is to use two anchor plates embedded on both sides of a post-poured strip, and a force transmission rod fixed on the anchor plates as a force transmission rod for construction. This process saves materials and has low construction cost, but the force transmission rod is eccentrically stressed and has poor force transmission capacity, so it is not suitable for deep foundation pit engineering.

[0004] In actual construction process, the construction area will have certain settlement during construction. When the above-mentioned three kinds of integral force transmission rods encounter uneven settlement of adjacent areas, stress is easily concentrated in the force transmission rod, which causes deformation or even cracking of the force transmission rod, thereby affecting construction safety. Therefore, an equipment is needed to solve the above-mentioned problems. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a deep foundation pit support dismantling and replacing support segmented force transmission rod, which solves the problem that the existing force transmission rod is prone to stress concentration when facing uneven settlement.

[0006] To achieve the above object, the utility model is implemented by the following technical scheme: a deep foundation pit support dismantling and replacing support segmented force transmission rod, comprising two connecting rods for fixed connection with a beam plate and a connecting plate arranged between the two connecting rods, the connecting rod comprising a rod body and end plates fixed at both ends of the rod body;

[0007] The front and rear sides of the connecting rod towards the connecting plate end plate are provided with positioning mechanisms, the end plates are limited front and rear by the positioning mechanisms and the connecting plate, the middle part of the connecting plate is provided with a guide wheel, and the guide wheel is in rolling fit with one side of the end plate;

[0008] The middle parts of the end plates and the connecting plate are provided with long oval holes, the inside of the long oval hole is provided with a fastener, and the end plate is connected with the connecting plate through the fastener.

[0009] Optionally, the positioning mechanism comprises a longitudinal positioning slot and a positioning block, the positioning slot is arranged on one side of the end plate, and the positioning block is fixedly connected to one side of the connecting plate and guided and matched with the positioning slot.

[0010] Optionally, one side of the end plate is provided with a longitudinal guide slot, and the guide wheel extends into the guide slot and is guided and matched with the guide slot.

[0011] Optionally, the bottom of the connecting plate is provided with a supporting mechanism for supporting the connecting rod.

[0012] Optionally, the supporting mechanism comprises a supporting plate and a top plate, a sliding slot is arranged at the bottom of one side of the connecting plate, the supporting plate is slidingly connected to the inside of the sliding slot, the top plate is fixedly connected to one end of the supporting plate away from the connecting plate, and the top plate abuts against the lower surface of the connecting rod.

[0013] Optionally, a guide rod is fixedly connected to the inner wall of the sliding slot, the guide rod penetrates the supporting plate to guide the supporting plate, a compression spring is sleeved on the outer surface of the guide rod, and the upper surface of the compression spring abuts against the lower surface of the supporting plate.

[0014] Optionally, the upper surface of the top plate and one side of the end plate are both fixedly connected with a reinforcing rib to improve the strength.

[0015] Optionally, the fastener comprises a fixed bolt, a spring washer and a fixed nut, the fixed bolt penetrates the middle part of the long oval hole, the fixed nut is arranged at the other end of the long oval hole and is threadedly connected with the fixed bolt, and the spring washer is arranged between the end plate and the fixed nut.

[0016] The utility model provides a kind of deep foundation pit support dismantling support segmented type force transmission rod, with following beneficial effects:

[0017] The utility model provides a kind of deep foundation pit support dismantling support segmented type force transmission rod, the cooperation of connecting rod and end plate is set, end plate can increase the contact surface between connecting rod and reinforcing cage, improve the stability when supporting, the cooperation of end plate, connecting plate and fastener can be fixed in the two end plates of connecting plate two sides, the structure of two sides is supported, further cooperation guide wheel and long oval hole, when the end plate of connecting plate two sides occurs different settlement, long oval hole can allow end plate to deviate a certain, to absorb the force deviation caused by different settlement, while the guide wheel in middle part can reduce friction, can reduce the friction between connecting rod and connecting plate when settlement occurs. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is structure schematic view of the utility model;

[0019] Fig. 2The utility model discloses a structure schematic diagram in the use process.

[0020] Fig. 3 The utility model discloses a structure schematic diagram of connecting plate side section.

[0021] In the drawing: 1, connecting rod;2, end plate;3, connecting plate;4, guide wheel;5, long oval hole;6, positioning groove;7, positioning block;8, guide groove;9, support plate;10, top plate;11, sliding slot;12, guide rod;13, compression spring;14, reinforcing rib;15, fixed bolt;16, spring washer;17, fixed nut. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Please refer to Figs. 1 to 3 The utility model provides a technical scheme: a deep foundation pit support dismantles and changes to support sectional type force transmission rod, 1. Including two connecting rods 1 for with beam plate fixed connection and setting between two connecting rods 1 connecting plate 3, connecting rod 1 includes the rod body and the end plate 2 fixed at the both ends of rod body;

[0024] Connecting rod 1 is equipped with positioning mechanism towards the front and back sides of end plate 2 of connecting plate 3, and end plate 2 is limited through positioning mechanism and connecting plate 3 front and back, and the middle part of connecting plate 3 is equipped with guide wheel 4, and guide wheel 4 is rolled and is attached with the side of end plate 2;

[0025] The middle part of end plate 2 and connecting plate 3 is all equipped with long oval hole 5, and the inside of long oval hole 5 is equipped with fastener, and end plate 2 is connected with connecting plate 3 through fastener.

[0026] The both sides of each connecting rod 1 are equipped with end plate 2, increase the contact surface with steel structure, when supporting, it is more stable, and connecting plate 3 connects the connecting rod 1 on both sides, when the uneven settlement of both sides connecting rod 1 occurs, the connecting rod 1 on one side moves down, and long oval hole 5 avoids fastener, so that fastener can move down in long oval hole 5 to a certain extent, ensure that connecting rod 1 is in horizontal direction, reduce the stress concentration caused by inclination, and the guide wheel 4 in connecting plate 3 can reduce the friction when end plate 2 moves, make end plate 2 move more smoothly, further reduce stress concentration.

[0027] In this embodiment, as a preferred solution, the positioning mechanism comprises a longitudinal positioning groove 6 and a positioning block 7, the positioning groove 6 is arranged on one side of the end plate 2, and the positioning block 7 is fixedly connected to one side of the connecting plate 3. The positioning block 7 and the positioning groove 6 are guided and matched. A longitudinal guide groove is arranged on one side of the end plate. The guide wheel extends into the guide groove and is guided and matched with the guide groove.

[0028] The positioning groove 6 and the positioning block 7 are longitudinally arranged. After the positioning groove 6 is connected with the top block, the connecting plate 3 can limit the left and right movement direction of the end plate 2, so that the end plate 2 can only move up and down, improving the stability during supporting. At the same time, during installation, the positioning block 7 and the positioning block 7 can be quickly connected and fixed together, shortening the installation time.

[0029] In this embodiment, as a preferred solution, the bottom of the connecting plate 3 is provided with a supporting mechanism for supporting the connecting rod 1. The supporting mechanism comprises a supporting plate 9 and a top plate 10. A sliding groove 11 is arranged at the bottom of one side of the connecting plate 3. The supporting plate 9 is slidingly connected in the inner part of the sliding groove 11. The top plate 10 is fixedly connected to one end of the supporting plate 9 away from the connecting plate 3, and abuts against the lower surface of the connecting rod 1. The inner wall of the sliding groove 11 is fixedly connected with a guide rod 12. The guide rod 12 penetrates through the supporting plate 9 to guide the supporting plate 9. The outer surface of the guide rod 12 is sleeved with a compression spring 13. The upper surface of the compression spring 13 abuts against the lower surface of the supporting plate 9.

[0030] The compression spring 13 pushes the supporting plate 9 to move upward, so that the supporting plate 9 supports the bottom of the connecting rod 1 to support the bottom of the connecting rod 1, improving the stability during supporting. When the connecting rod 1 moves downward, the connecting rod 1 on the corresponding side presses the top plate 10 at the bottom, further pushing the supporting plate 9 to move downward, ensuring that the top plate 10 can always abut against the bottom of the connecting rod 1. The guide rod 12 in the middle limits the movement direction of the supporting plate 9, so that the supporting plate 9 can only move up and down, further preventing the connecting rod 1 from tilting.

[0031] In this embodiment, as a preferred solution, the upper surface of the top plate 10 and one side of the end plate 2 are fixedly connected with a reinforcing rib 14 to improve the strength.

[0032] The reinforcing ribs 14 on the top plate 10 are arranged in parallel to increase the supporting strength of the top plate 10, so as to prevent the top plate 10 from deforming when supporting the connecting rod 1. The reinforcing ribs 14 on the end plate 2 are arranged obliquely to form a triangular structure between the end plate 2 and the connecting rod 1, improving the strength of the end plate 2 to prevent the end plate 2 from tilting.

[0033] In the embodiment, as a preferred solution, the fastener comprises a fixing bolt 15, a spring washer 16 and a fixing nut 17, the fixing bolt 15 penetrates the middle part of the long-oval hole 5, the fixing nut 17 is arranged at the other end of the long-oval hole 5 and is threadedly connected with the fixing bolt 15, and the spring washer 16 is arranged between the end plate 2 and the fixing nut 17.

[0034] The fixing bolt 15 penetrates the left end plate 2, the middle connecting plate 3 and the right end plate 2 at the same time and is threadedly connected with the fixing nut 17 at the opposite side, so as to fix the connecting rods 1 at the two sides on the middle connecting plate 3, and the spring washer 16 is arranged between the fixing nut 17 and the fixing bolt 15, so as to reduce the possibility of loosening of the two.

[0035] In the utility model, the working steps of the device are as follows:

[0036] 1. In use, the connecting rods 1 at the two sides are installed on the middle connecting plate 3, and the fixing bolt 15 and the fixing nut 17 are used for fixing, and after fixing, the connecting rods 1 at the two sides are connected with the steel structure framework through the end plates 2 at the outer sides;

[0037] 2. When settlement occurs, the connecting rod 1 at one side moves downward, the long-oval hole 5 avoids the fixing bolt 15, so that the fixing bolt 15 can move downward by a certain distance at the same time, and the guide wheel 4 inside reduces the friction during movement;

[0038] 3. In the process of moving downward of the connecting rod 1 at one side, the support plate 9 at the corresponding side is compressed, so as to compress the compression spring 13 in the sliding groove 11, after the structure is stable, the connecting rod 1 is disassembled, and the connecting rod 1 and the connecting plate 3 are separated.

[0039] The specific embodiments provided by the utility model are described in detail above, and the principle and implementation mode of the utility model are described by applying specific examples in this paper, and the above embodiment is only used to help understand the method and core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the utility model, the specific embodiments and application range will be changed, and according to the above, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A segmented transfer bar for deep foundation pit support dismantling and replacing support, characterized in that: The utility model provides a connecting rod (1) and the connecting plate (3) between two connecting rods (1) are used for fixed connection with beam plate, the connecting rod (1) includes the rod body and the end plate (2) fixed in the rod body both ends, The connecting rod (1) is provided with positioning mechanism on both sides of the end plate (2) of the connecting plate (3), the end plate (2) is limited in front and back by positioning mechanism and the connecting plate (3), the middle part of the connecting plate (3) is provided with guide wheel (4), the guide wheel (4) is rolled and attached to one side of the end plate (2), The middle part of the end plate (2) and the connecting plate (3) is provided with long oval hole (5), the inside of long oval hole (5) is provided with fastener, the end plate (2) is connected with the connecting plate (3) by fastener.

2. The segmental transfer bar for deep foundation pit support dismantling and replacing props according to claim 1, characterized in that: The positioning mechanism includes longitudinal positioning groove (6) and positioning block (7), the positioning groove (6) is set on one side of the end plate (2), the positioning block (7) is fixedly connected on one side of the connecting plate (3), the positioning block (7) and the positioning groove (6) are guided and adapted.

3. The segmental transfer bar for deep foundation pit support dismantling and replacing props according to claim 2, characterized in that: One side of the end plate (2) is provided with longitudinal guide slot (8), the guide wheel (4) extends into the guide slot (8) and is guided and adapted with the guide slot (8).

4. The segmental transfer bar for deep foundation pit support dismantling and replacing props according to any one of claims 1-3, characterized in that: The bottom of the connecting plate (3) is provided with support mechanism to support the connecting rod (1).

5. The segmental transfer bar for deep foundation pit support dismantling and replacing props according to claim 4, characterized in that: The support mechanism includes support plate (9) and top plate (10), the bottom of one side of the connecting plate (3) is provided with sliding slot (11), the support plate (9) is slidingly connected in the inside of the sliding slot (11), the top plate (10) is fixedly connected on one end of the support plate (9) away from the connecting plate (3), and the top plate (10) abuts against the lower surface of the connecting rod (1).

6. The segmental transfer bar of claim 5, wherein: The inner wall of the sliding slot (11) is fixedly connected with guide rod (12), the guide rod (12) penetrates the support plate (9) to guide the support plate (9), the outer surface of the guide rod (12) is sleeved with compression spring (13), and the upper surface of the compression spring (13) abuts against the lower surface of the support plate (9).

7. The segmental transfer bar of claim 6, wherein: The upper surface of the top plate (10) and one side of the end plate (2) are fixedly connected with reinforcing ribs (14) to improve the strength.

8. A deep foundation pit support dismounting and replacing strut sectional type force transferring rod according to any one of claims 1-3, characterized in that: The fastener includes fixed bolt (15), spring washer (16) and fixed nut (17), the fixed bolt (15) penetrates the middle part of the long oval hole (5), the fixed nut (17) is arranged at the other end of the long oval hole (5) and is threadedly connected with the fixed bolt (15), and the spring washer (16) is arranged between the end plate (2) and the fixed nut (17).

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