Two-way horizontal limiting device for jacking

Abstract

The utility model discloses a two-way horizontal limiting device for jacking, which solves the problem that a house has no horizontal constraint in the jacking construction process, realizes two-way limiting through a one-way setting device, saves cost, shortens the construction period and reduces damage to a main body structure. According to the technical scheme, the device comprises a left limiting guide rail, a right limiting guide rail and a horizontal rigid pull rod, and the left limiting guide rail and the right limiting guide rail are the same in structure and are oppositely arranged; the left limiting guide rail and the right limiting guide rail each comprise a stand column, a supporting frame, a horizontal steel pull rod and a vertical steel pull rod. A supporting frame is arranged on one side of the stand column, a limiting groove is formed in the other side of the stand column, an anchoring part is arranged at the bottom end of the stand column, a pin key and a connecting beam are arranged in the limiting groove, the pin key and the connecting beam are fixedly connected, and the pin key can move up and down in the limiting groove. The horizontal steel pull rod is arranged on a jacking building body, and a vertical steel pull rod is arranged on the upper portion of the middle section of the horizontal steel pull rod.

Description

TECHNICAL FIELD

[0001] The utility model belongs to building body jacking technical field, concretely relates to a two -way horizontal limiting device for jacking. BACKGROUND

[0002] The statements in this section merely provide background information related to the utility model and do not necessarily constitute prior art.

[0003] At present, in order to meet the new use function requirement, a large number of existing buildings need to be reconstructed. Because the floor height of the existing building cannot meet the requirement, often needs to be jacked to increase the floor height, needs to cut off the original vertical bearing component during the jacking process, and the upper structure is not horizontally constrained after cutting off, needs to add temporary limiting device to guarantee the safety during construction.

[0004] The patent number CN208702197U in the prior art discloses a large displacement whole jacking horizontal limiting device, is provided with a plurality of limiting inner tubes, the bottom end of the limiting inner tube is fixedly connected with the top surface of the lower foundation structure, the top end of the limiting inner tube passes through the track outer tube preinstalled in the jacking pile cap and is partially exposed above the top surface of the jacking pile cap, the structure is larger to the damage of the jacking pile cap, and the construction operation surface is large, another commonly used limiting device is generally arranged transversely and longitudinally, and plane truss is arranged to increase the stability of the main structure, and the structure arrangement is also very complex, needs to be arranged transversely and longitudinally, has great influence on the original structure, needs large construction operation surface, long installation period and high cost. UTILITY MODEL CONTENTS

[0005] In view of the above problems, the utility model provides a two -way horizontal limiting device for jacking, solves the problem that the house is not horizontally constrained during the jacking construction process, guarantees the safety of structure during construction, is arranged in only one direction, can realize the device of two -way limiting, and adopts section steel and prestressed steel pull rod instead of truss, saves the cost, shortens the construction period, reduces the damage to the main structure, can be repeatedly used and is suitable for different jacking heights.

[0006] To achieve the above object, the utility model adopts the following technical scheme:

[0007] The utility model provides a two -way horizontal limiting device for jacking, comprising left limiting guide rail, right limiting guide rail and horizontal rigid pull rod group, the left limiting guide rail and right limiting guide rail structure are same, and relative arrangement is carried out.

[0008] The left limiting guide rail and the right limiting guide rail each include a column, a support frame, a connecting beam, a pin key, a horizontal steel pull rod, a vertical steel pull rod and an anchor; one side of the column is provided with the support frame, the other side of the column is provided with a limiting groove, the bottom end of the column is provided with an anchor for fixed connection of the column and the bottom plate of the building body, the limiting groove is provided with the pin key and the connecting beam, the pin key is fixedly connected with the connecting beam, and the pin key can move up and down in the limiting groove.

[0009] The horizontal steel pull rod is arranged on the jacked building body, the two ends of the horizontal steel pull rod are connected with the connecting beams of the left limiting guide rail and the right limiting guide rail respectively, the upper middle part of the horizontal steel pull rod is provided with a vertical steel pull rod, one end of the vertical steel pull rod is connected with the horizontal steel pull rod through a connecting plate, and the other end of the vertical steel pull rod is connected with the top of the jacked building body through an anchor.

[0010] Further, the limiting groove is a groove formed by two limiting plates and the column, and a first stiffening rib is arranged between the outer side of the limiting groove and the column.

[0011] Further, the first stiffening rib, the column and the limiting plate are all welded.

[0012] Further, the support frame is composed of a first support, a second support, a first auxiliary support and a second auxiliary support, one end of the first support and the second support is connected with the top end of the column, the other end of the first support and the second support is fixedly connected with the bottom plate of the building body through an anchor, one end of the first auxiliary support and the second auxiliary support is connected with the middle part of the column, the other end of the first auxiliary support and the second auxiliary support is fixedly connected with the bottom plate of the building body through an anchor, the first support and the first auxiliary support are in the same plane, the second support and the second auxiliary support are in the same plane, and the two planes are perpendicular to each other.

[0013] Further, the middle part of the first support and the middle part of the column are provided with a first pull rod, and the middle part of the second support and the middle part of the column are provided with a second pull rod.

[0014] Further, the first pull rod and the second pull rod are connected with the column through welding or bolts, and the first pull rod and the second pull rod are also connected with the first support and the second support through welding or bolts.

[0015] Further, the connecting beam is a channel steel, the connecting beam and the jacked building body are compressed through the fasteners at the ends of the horizontal steel pull rod, and viscous glue is poured between the connecting beam and the jacked building body.

[0016] Further, the pin key is also made of channel steel, the pin key is connected with the connecting beam through welding, and a patch plate is arranged at the connecting joint, and both ends of the patch plate are welded with the pin key and the connecting beam.

[0017] Further, the connecting plate is a steel plate, an upper section of the steel plate is welded with a vertical steel pull rod, a lower section of the steel plate is provided with a through hole, a steel pipe is arranged in the through hole, the steel pipe is welded with a wall of the through hole, and the horizontal steel pull rod is penetrated in the steel pipe.

[0018] Further, the anchor is composed of a steel plate and a chemical anchor.

[0019] Compared with the prior art, the utility model has the advantages and positive effects that:

[0020] The utility model discloses a limiting device is formed by left limiting guide rail, right limiting guide rail and so on, utilizes the plane truss structure that column and support constitute and the limiting action of limiting groove to pin key, solves the problem of lateral displacement of the building body during the jacking process, realizes the bidirectional limiting of the building body of jacking, guarantees the safety of main structure, through the prestress of horizontal steel pull rod end, guarantees its stability, solves the problem that horizontal steel pull rod can produce horizontal lateral displacement after cutting, can effectively prevent the lateral displacement of main structure during the jacking process, guarantees the overall safety of main structure during jacking operation, improves the reliability of the connection between components and the longitudinal overall stability of main structure, and is favorable for the smooth development of the jacking process.

[0021] The steel pipe at the connecting plate of the horizontal steel pull rod and the vertical steel pull rod can limit the vertical movement of the horizontal steel pull rod, but the horizontal movement of the horizontal steel pull rod is allowed, the prestress of the horizontal steel pull rod is guaranteed, the vertical steel pull rod is used as the intermediate support point of the horizontal steel pull rod, the deflection of the horizontal steel pull rod is reduced, the flower basket bolt is arranged and can also exert prestress, the vertical steel pull rod can be tensioned to the horizontal steel pull rod, the longitudinal overall stability and the reliability of the connection during the jacking process are guaranteed, the deflection of the horizontal steel pull rod is reduced, and the vertical steel pull rod is used as the intermediate support point. ACCURACY OF DRAWINGS

[0022] The drawings accompanying the specification of the utility model form a part of the utility model and serve to provide further understanding of the utility model, and the illustrative embodiments of the utility model and their descriptions serve to explain the utility model, and do not constitute an improper limitation on the utility model.

[0023] Figure 1 It is the front view of the limiting device overall structure of the utility model

[0024] Figure 2 It is the support frame structure diagram of the utility model

[0025] Figure 3 It is the radial section view of the column of the utility model

[0026] Figure 4 Figure 2 is a connection structure diagram of the tie beam and the pin key of the utility model

[0027] Figure 5 Figure 4 is a sectional view of the connection point of the vertical steel pull rod and the horizontal steel pull rod of the utility model

[0028] Figure 6 Figure 5 is a connection structure diagram of the vertical steel pull rod and the horizontal steel pull rod of the utility model

[0029] In the figure: 1, building body; 2, first support; 3, second support; 4, stand column; 5, limiting plate; 6, first stiffening rib; 7, second stiffening rib; 8, tie beam; 9, pin key; 10, patch plate; 11, vertical steel pull rod; 12, horizontal steel pull rod; 13, basket bolt; 14, steel pipe; 15, connecting plate; 16, anchoring piece; 17, jacking building body; 18, first auxiliary support; 19, second auxiliary support; 20, first pull rod; 21, second pull rod. DETAILED DESCRIPTION

[0030] It should be noted that the following detailed description is illustrative only and is intended to provide further description of the utility model. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs.

[0031] It should be noted that the terms used herein are only for the purpose of describing the specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the present application explicitly indicates otherwise, the singular form is also intended to include the plural form, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, it means that the features, steps, operations, devices, components and / or their combinations are present.

[0032] The utility model is described in detail below in combination with the drawings. The bidirectional horizontal limiting device for jacking disclosed in the embodiment comprises a left limiting guide rail, a right limiting guide rail and a horizontal steel pull rod, as shown in the figure. Figures 1-6 The left limiting guide rail and the right limiting guide rail are the same in structure and are oppositely arranged.

[0033] The left limiting guide rail and the right limiting guide rail both comprise a stand column 4, a support frame, a tie beam 8, a pin key 9, a horizontal steel pull rod 12, a vertical steel pull rod 11 and an anchoring piece 16. One side of the stand column 4 is provided with the support frame, the other side of the stand column 4 is provided with a limiting groove, and the bottom end of the stand column 4 is provided with the anchoring piece 16 for fixed connection of the stand column 4 and the bottom plate of the building body 1. The pin key 9 and the tie beam 8 are arranged in the limiting groove, the pin key 9 is fixedly connected with the tie beam 8, and the pin key 9 can move up and down in the limiting groove.

[0034] The horizontal steel pull rod 12 is arranged on the jacking building body 17, and the two ends of the horizontal steel pull rod 12 are connected with the connecting beams 8 of the left limiting guide rail and the right limiting guide rail respectively, and a vertical steel pull rod is arranged on the upper middle part of the horizontal steel pull rod 12, one end of the vertical steel pull rod is connected with the horizontal steel pull rod 12 through the connecting plate 15, and the other end of the vertical steel pull rod is connected with the top of the jacking building body 17 through the anchoring piece 16.

[0035] The column 4 adopts an H-shaped steel, and the length of the H-shaped steel is greater than the jacking height, and in the specific implementation process, the length is set as the jacking height plus 2 m, and the model of the column 4 should be determined by comprehensively calculating the jacking height, the lateral force of the main body structure and the like; the column 4 is provided with a limiting groove in the range of the jacking height plus 0.5 m, the limiting groove is a groove formed by two limiting plates 5 and the column 4, lubricating oil is applied in the groove, a first stiffening rib 6 is arranged between the outside of the limiting groove and the column 4, and the first stiffening rib 6 serves to enhance the lateral bearing capacity and stability of the limiting plate 5, a second stiffening rib 7 is arranged at the corresponding column 4, and the second stiffening rib 7 serves to enhance the local stability and bearing capacity of the steel column, and the first stiffening rib 6, the column 4 and the limiting plate 5 are all connected by welding. The bottom of the column 4 is connected with the bottom plate of the building body 1 through the anchoring piece 16, and the upper end of the column 4 is free, the column body and the support form a plane truss structure, which can prevent the main body structure from moving sideways during the jacking process, and ensure the safety of the main body structure. The limiting groove can ensure that the pin key 9 moves vertically in the groove, but cannot move in the front-rear and left-right directions, thereby achieving the bidirectional limiting of the main body structure without affecting the jacking.

[0036] The support frame is composed of a first support 2, a second support 3, a first auxiliary support 18 and a second auxiliary support 19, one end of the first support 2 and the second support 3 is connected with the top end of the column 4, and the other end of the first support 2 and the second support 3 is fixedly connected with the bottom plate of the building body 1 through the anchoring piece 16; one end of the first auxiliary support 18 and the second auxiliary support 19 is connected with the middle part of the column 4, and the other end of the first auxiliary support 18 and the second auxiliary support 19 is fixedly connected with the bottom plate of the building body 1 through the anchoring piece 16; the first support 2 and the first auxiliary support 18 are in the same plane, the second support 3 and the second auxiliary support 19 are in the same plane, and the two planes are perpendicular to each other.

[0037] The middle part of the first support 2 and the middle part of the column 4 are provided with a first pull rod 20, and the middle part of the second support 3 and the middle part of the column 4 are provided with a second pull rod 21.

[0038] The upper part of the support frame is connected with the column 4 by welding or bolt, the first and second pull rods 20 and 21 are connected with the column 4 by welding or bolt, and the first and second pull rods 20 and 21 are also connected with the first and second supports 2 and 3 by welding or bolt.

[0039] The connecting beam 8 is made of channel steel, and is compressed by fasteners at the ends of the horizontal steel pull rod 12 and the jacking building body 17, and viscous glue is injected between the connecting beam 8 and the jacking building body 17. The connecting beam 8 enhances the longitudinal overall stability and the connection reliability of the main structure during the jacking process.

[0040] The pin key 9 is also made of channel steel, and is connected with the connecting beam 8 by welding, and the joint is provided with a patch plate 10 welded with the pin key 9 and the connecting beam 8, which enhances the connection reliability of the connecting beam 8. The width of the pin key 9 should be determined in combination with the groove formed by the steel column and the limiting plate 5, and the width of the pin key 9 should be 1-2 mm smaller than the net width of the groove. If the width of the pin key 9 is too large, it cannot be installed in the groove, and if it is too small, it cannot limit the position.

[0041] The horizontal steel pull rod 12 is made of round steel, and the ends are provided with threads and fasteners. The fasteners are provided with a pad plate between the fasteners and the connecting beam 8, and the fasteners preferentially select nuts. The pre-stress is applied through the nuts at the ends, and the size of the pre-stress is the same as the horizontal force at the bottom of the column. The applied pre-stress can ensure that the column will not produce horizontal side shift after being cut off.

[0042] The vertical steel pull rod 11 is made of round steel, the upper end is connected with the main structure through an anchor 16, and the lower end is connected with the horizontal steel pull rod 12 through a connecting plate 15. The vertical steel pull rod 11 is provided with a basket bolt 13 in the middle, and the pre-stress can be applied to the vertical steel pull rod 11 through the basket bolt 13. The vertical steel pull rod 11 mainly acts as an intermediate support point of the horizontal steel pull rod 12, which can reduce the deflection of the horizontal steel pull rod 12.

[0043] The connecting plate 15 is a steel plate, the upper section of the vertical steel pull rod 11 is welded, the lower section is provided with a through hole, the through hole is provided with a steel pipe 14, the steel pipe 14 is welded with the hole wall, and the horizontal steel pull rod 12 penetrates the steel pipe 14. In this way, the horizontal steel pull rod 12 can move freely along its length direction, but cannot move vertically, so that the pre-stress can be smoothly applied to the horizontal steel pull rod 12.

[0044] The anchor 16 is composed of a steel plate and a chemical anchor, and its function is to transmit the internal force of the limiting device to the main structure. The thickness of the steel plate, the diameter and the number of the anchor should be determined according to the size of the anchoring force at the corresponding node.

[0045] The specific implementation steps are as follows:

[0046] S1. Process each component of the limit device according to the lifting height and the on-site measured dimensions.

[0047] S2. Drill holes for anchor bolts, clean the holes, insert anchor bolts and inject adhesive. After the structural adhesive reaches the design strength, install the anchoring steel plate.

[0048] S3. Install the connecting beam 8, inject structural adhesive between the connecting beam 8 and the lifting building body 17, and install fasteners to ensure a tight connection between the connecting beam 8 and the lifting building body 17. The injection of structural adhesive should be carried out before the installation of bolts is completed.

[0049] S4. Fabricate connecting plate 15 and steel pipe 14, and apply lubricating oil to the inner wall of steel pipe 14; install horizontal steel tie rod 12, and install connecting plate 15 connected to vertical steel tie rod 11, and pre-tighten nuts; install vertical steel tie rod 11, weld its upper end to anchor 16, and weld its lower end to connecting plate 15, and use turnbuckles 13 on vertical steel tie rod 11 to make horizontal steel tie rod 12 straight and without deflection.

[0050] S5. Tighten the nuts at both ends of the horizontal steel tie rod 12 to apply prestress. The magnitude of the prestress is equal to the horizontal force at the bottom of the column.

[0051] S6. Install the pin 9 and the connecting plate 10. Weld the pin 9 to the connecting beam 8 and weld both ends of the connecting plate 10 to the pin 9 and the connecting beam 8.

[0052] S7. Fabricate and install the column 4, limiting plate 5, and first stiffening rib 6 on site. The bottom is connected to the anchor 16 by welding. The limiting groove formed by the column 4 and the limiting plate 5 should be coated with lubricating oil. Use a clamp to make the limiting groove fit tightly with the key 9, so that the key 9 can move up and down in the limiting groove, but cannot move left and right or forward and backward. Install the first support 2, the second support 3, the first auxiliary support 18, and the second auxiliary support 19 by welding or bolting. Remove the clamp after the support is installed.

[0053] S8. After the limit device is installed, it should be inspected and accepted to ensure that the prestress of the horizontal steel tie rod 12 reaches the design value, the weld is full, there are no inclusions or gaps, and the bolts are tightened.

[0054] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A bidirectional horizontal limiting device for lifting, characterized in that, It consists of a left limiting guide rail, a right limiting guide rail and a horizontal rigid tie rod. The left limiting guide rail and the right limiting guide rail have the same structure and are arranged opposite to each other. Both the left and right limiting guide rails include a column, a support frame, a connecting beam, a key, a horizontal steel tie rod, a vertical steel tie rod, and an anchor. The support frame is provided on one side of the column, and a limiting groove is provided on the other side of the column. An anchor is provided at the bottom of the column for fixing the column to the building's base plate. The key and the connecting beam are provided in the limiting groove. The key is fixedly connected to the connecting beam, and the key can move up and down in the limiting groove. The horizontal steel tie rod is installed on the lifting structure. Both ends of the horizontal steel tie rod are connected to the connecting beams of the left and right limiting guide rails, respectively. A vertical steel tie rod is installed on the upper part of the middle section of the horizontal steel tie rod. One end of the vertical steel tie rod is connected to the horizontal steel tie rod through a connecting plate, and the other end of the vertical steel tie rod is connected to the top of the lifting structure through an anchor.

2. The bidirectional horizontal limiting device for lifting according to claim 1, characterized in that, The limiting groove is a groove formed by two limiting plates and the column, and a first stiffening rib is provided between the outer side of the limiting groove and the column.

3. The bidirectional horizontal limiting device for lifting according to claim 2, characterized in that, The first stiffening rib, column and limiting plate are all connected by welding.

4. The bidirectional horizontal limiting device for lifting according to claim 1, characterized in that, The support frame consists of a first support, a second support, a first auxiliary support, and a second auxiliary support. One end of the first support and the second support are connected to the top of the column, and the other end of the first support and the second support are fixedly connected to the base plate of the building through anchors. One end of the first auxiliary support and the second auxiliary support are connected to the middle of the column, and the other end of the first auxiliary support and the second auxiliary support are fixedly connected to the base plate of the building through anchors. The first support and the first auxiliary support are in the same plane, and the second support and the second auxiliary support are in the same plane, with the two planes being perpendicular to each other.

5. A bidirectional horizontal limiting device for lifting according to claim 4, characterized in that, A first tie rod is provided at the middle of the first support and at the middle of the column, and a second tie rod is provided at the middle of the second support and at the middle of the column.

6. A bidirectional horizontal limiting device for lifting according to claim 5, characterized in that, The first and second tie rods are connected to the column by welding or bolts, and the first and second tie rods are also connected to the first and second supports by welding or bolts.

7. A bidirectional horizontal limiting device for lifting according to claim 1, characterized in that, The connecting beam is made of channel steel. The connecting beam and the lifting structure are pressed together by fasteners at the ends of horizontal steel tie rods. Adhesive is injected between the connecting beam and the lifting structure.

8. A bidirectional horizontal limiting device for lifting according to claim 1, characterized in that, The pin is also made of channel steel. The pin is connected to the connecting beam by welding. A gusset plate is provided at the connection joint. The two ends of the gusset plate are welded to the pin and the connecting beam.

9. A bidirectional horizontal limiting device for lifting according to claim 1, characterized in that, The connecting plate is a steel plate, with a vertical steel tie rod welded to the upper section and a through hole provided in the lower section. A steel pipe is installed in the through hole and welded to the wall of the through hole. The horizontal steel tie rod passes through the steel pipe.

10. A bidirectional horizontal limiting device for lifting according to claim 1, characterized in that, The anchor consists of a steel plate and chemical anchors.

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