Supporting device with adjustable prestress

Abstract

The utility model discloses an adjustable prestress supporting device which comprises a supporting base, an installation sleeve is arranged on the top face of the supporting base, an adjustable nut is arranged on the top of the installation sleeve in a rotating mode, a lifting screw is arranged in the installation sleeve in a sleeved mode, the lifting screw is in threaded connection with the adjustable nut, and the adjustable nut is in threaded connection with the installation sleeve. A supporting top plate is arranged on the top face of the lifting screw rod, a plurality of horizontal fixing bases are arranged on the side face of the mounting sleeve, the horizontal fixing bases are connected with horizontal screw rods, horizontal connecting pieces are arranged on the horizontal screw rods in a sliding mode, and rotatable inclined supporting pieces are arranged between the bottom face of the supporting top plate and the horizontal connecting pieces. The top face of the supporting base and the horizontal connecting piece are provided with rotatable inclined telescopic pieces, and a locking nut used for being matched with the horizontal connecting piece is connected to the horizontal screw in a screwed mode. The supporting device has the advantages of being stable in supporting, capable of preventing prestress loss and convenient to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of building support equipment, and specifically relates to an adjustable prestressed support device. Background Art

[0002] The existing component support and erection systems in the construction industry are mainly wheel-lock, bowl-lock, plate-lock, sleeve-lock scaffolding and portal scaffolding. The component standards are relatively high, and the end adjustable components and the application of pre-loading force are implemented by the jacking component.

[0003] Although the support system is quick and easy to set up, the adjustable components are single and the pre-tensioning force is constructed in one direction. The applied predetermined force is limited. During use, the jacking support is easy to loosen, causing the applied predetermined force to be "reduced", resulting in deformation of the formed components. It is difficult to meet the requirements of the support system for the construction of components with high refinement.

[0004] The building jack, also known as the adjusting screw, consists of a support plate, a screw and an adjusting nut. The purpose of the building jack: It is used in conjunction with steel pipes and scaffolding during the construction process to adjust the height of the scaffolding and pipe racks, balance and support heavy objects, and bear the weight. It is most commonly used in the construction process of commercial concrete pouring in plane construction. With the rapid development of real estate and three-dimensional transportation in recent years, the use of jacks has also made rapid progress.

[0005] The problem with the existing technology is that the traditional jacking support point is single, the force applied during the adjustment process is unstable, and it is easy to become unstable under eccentric pressure; after being subjected to pressure or vibration, the applied prestress has the disadvantage of being reduced, which affects the support effect. Summary of the invention

[0006] The utility model aims to provide an adjustable prestressed support device in view of the problems existing in the prior art, which has the advantages of stable support, prevention of prestress loss and convenient use.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an adjustable prestressed support device, including a support base, a mounting sleeve is provided on the top surface of the support base, an adjustable nut is rotatably provided on the top of the mounting sleeve, a liftable screw is sleeved in the mounting sleeve, the liftable screw is threadedly connected to the adjustable nut, a support top plate is provided on the top surface of the liftable screw, a plurality of horizontal fixed bases are provided on the side of the mounting sleeve, the horizontal fixed base is connected to a horizontal screw, a horizontal connecting piece is slidably provided on the horizontal screw, a rotatable oblique support piece is provided between the bottom surface of the support top plate and the horizontal connecting piece, a rotatable oblique telescopic piece is provided on the top surface of the support base and the horizontal connecting piece, and a locking nut for cooperating with the horizontal connecting piece is threadedly connected to the horizontal screw.

[0008] In the above scheme, the stability of the bottom of the mounting sleeve is ensured by the support base, a lifting screw is arranged in the mounting sleeve, the lifting of the lifting screw is adjusted by rotating the adjustable nut, and the upper structure is supported by the supporting top plate on the top of the lifting screw, and the horizontal screw is positioned by the horizontal fixed base on the side of the mounting sleeve, and the horizontal connecting piece can slide along the horizontal screw to adjust the angle of the oblique supporting piece and the oblique telescopic piece. When the height of the supporting top plate is adjusted by the adjustable nut, the oblique supporting piece and the oblique telescopic piece will also adjust the angle accordingly. When the supporting top plate supports the upper structure to be supported, the locking nut is used to provide locking force to the oblique supporting piece and the oblique telescopic piece, the supporting top plate is auxiliary supported by the oblique supporting piece, and the oblique telescopic piece provides support for the horizontal connecting piece, thereby ensuring the overall support stability of the device.

[0009] Furthermore, fixed supports are provided on the upper and lower sides of the horizontal connecting member, the bottom surface of the supporting top plate, and the top surface of the supporting base, and both ends of the oblique supporting member and both ends of the oblique telescopic member are rotatably connected to the fixed supports respectively.

[0010] The upper side of the horizontal connecting member is rotatably connected to the fixed support on the bottom surface of the supporting top plate, and the lower side of the horizontal connecting member is rotatably connected to the fixed support of the supporting base, so that the oblique supporting member and the oblique telescopic member can be conveniently connected through the fixed support.

[0011] Furthermore, the horizontal fixed base is evenly distributed along the outer circle of the mounting sleeve, the oblique telescopic member includes an outer sleeve and an inner rod, the inner rod is slidably connected to the middle of the outer sleeve, and the outer sleeve is provided with a fastener.

[0012] By evenly arranging horizontal fixed bases along the outer circle, horizontal screws, horizontal connectors, oblique support members, and oblique telescopic members are correspondingly arranged to ensure the supporting stability of the supporting top plate to the upper structure to be supported. The inner rods are locked by fasteners on the outer set to provide upward supporting force to the horizontal connectors and horizontal screws, thereby ensuring the pressure-bearing stability of the structure.

[0013] Furthermore, a locking piece is movably provided on the liftable screw rod, and the locking piece is used to cooperate with the adjustable nut.

[0014] The locking piece is used to lock the height of the adjustable nut after the height is adjusted to prevent the nut from rotating.

[0015] Furthermore, a limiting guide hole is provided on the bottom surface of the liftable screw rod, and a guide column is provided at the bottom of the mounting sleeve, and the guide column is slidably matched with the limiting guide hole.

[0016] The guide column in the installation sleeve is slidably matched with the limiting guide hole of the liftable screw to limit the rotation of the liftable screw so that the liftable screw can only move up and down, thereby ensuring a stable connection.

[0017] Furthermore, the liftable screw is connected to the center of the support top plate, the mounting sleeve is connected to the center of the support base, and the liftable screw and the mounting sleeve are coaxially arranged.

[0018] The mounting sleeve is coaxially arranged with the liftable screw rod, and the center of the support top plate and the support base corresponds to the axial position of the mounting sleeve, thereby ensuring the support stability of the liftable screw rod on the support top plate and the upper structure to be supported.

[0019] The working principle of the device is: review the required support height of the component to be supported or prestressed, calculate the number and orientation of the required support device, install the support device according to the layout diagram, adjust the adjustable nut to make the support top plate close to the structure, check the device, and start adjusting the adjustable nut and locking nut after confirmation, apply prestress until the design / construction requirements are met, and prevent the support system from shrinking through double support. After the construction is completed, loosen the adjustable nut and locking nut in the opposite direction to remove the support force and remove the support device.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] 1. Set up a support base and a support top plate, cooperate with the middle installation sleeve, the lifting screw, the outer oblique support member, and the oblique telescopic member to connect the upper and lower bodies at multiple points and angles to enhance the stability of the device in the up and down directions and oblique forces;

[0022] 2. Install the sleeve, liftable screw, horizontal screw, oblique support, and locking nut to adjust the double support of the top plate to ensure that the prestress is not lost; set the locking piece to ensure that the lift screw does not retract during support;

[0023] 3. The height of the device is easy to adjust, with wide applicability. It can be used for supporting work in various occasions. It is easy to use and has a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural schematic diagram of an adjustable prestressed support device according to Example 1 of the utility model;

[0025] Figure 2 This is a schematic structural diagram of the locking member in Example 1 of the utility model;

[0026] Figure 3 This is a schematic diagram of the installation of an adjustable prestressed support device according to Example 1 of the utility model;

[0027] In the figure: 1. Support base; 2. Support top plate; 3. Locking nut; 4. Horizontal connector; 5. Adjustable nut; 6. Oblique support; 7. Horizontal screw; 8. Liftable screw; 9. Horizontal fixed base; 10. Outer kit; 11. Mounting sleeve; 12. Fixed support; 13. Inner rod; 14. Fastener; 15. Locking piece; 16. Limit guide hole; 17. Guide column; 18. Vertical support; 19. Structure to be supported. DETAILED DESCRIPTION

[0028] The technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative labor are within the scope of protection of the utility model. In the description of the utility model, it should be noted that the terms front, back, left, right, etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships in which the utility model product is usually placed when used. They are only for the convenience of describing the utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0029] Example 1

[0030] like Figure 1-3 As shown, an adjustable prestressed support device includes a support base 1, a mounting sleeve 11 is provided on the top surface of the support base 1, an adjustable nut 5 is rotatably provided on the top of the mounting sleeve 11, a liftable screw 8 is sleeved in the mounting sleeve 11, the liftable screw 8 is screwed with the adjustable nut 5, a support top plate 2 is provided on the top surface of the liftable screw 8, a plurality of horizontal fixed bases 9 are provided on the side of the mounting sleeve 11, the horizontal fixed bases 9 are connected with horizontal screws 7, a horizontal connecting member 4 is slidably provided on the horizontal screw 7, a rotatable oblique support member 6 is provided between the bottom surface of the support top plate 2 and the horizontal connecting member 4, a rotatable oblique telescopic member is provided on the top surface of the support base 1 and the horizontal connecting member 4, and a locking nut 3 for cooperating with the horizontal connecting member 4 is screwed on the horizontal screw 7.

[0031] In the above scheme, the bottom stability of the mounting sleeve 11 is ensured by the supporting base 1, and a lifting screw 8 is sleeved in the mounting sleeve 11. The lifting and lowering of the lifting screw is adjusted by rotating the adjustable nut 5, and the upper structure is supported by the supporting top plate 2 on the top of the lifting screw 8. The horizontal screw 7 is positioned by the horizontal fixed base 9 on the side of the mounting sleeve 11. The horizontal connecting member 4 can slide along the horizontal screw 7 to adjust the angles of the oblique supporting member 6 and the oblique telescopic member. When the height of the supporting top plate 2 is adjusted by the adjustable nut 5, the oblique supporting member 6 and the oblique telescopic member will also adjust the angles accordingly. When the supporting top plate 2 supports the upper structure 19 to be supported, the locking nut 3 is used to provide locking force to the oblique supporting member 6 and the oblique telescopic member, and the oblique supporting member 6 is used to auxiliary support the supporting top plate 2, and the oblique telescopic member provides support for the horizontal connecting member 4, thereby ensuring the overall support stability of the device.

[0032] When the support height of some components is relatively high, vertical support members 18 (such as steel pipes, H-shaped steels, square steels) need to be arranged under the support base 1, i.e., the steel plate. The horizontal fixed base 9 is screwed or fixedly connected to the horizontal screw rod 7.

[0033] Furthermore, the upper and lower sides of the horizontal connecting member 4, the bottom surface of the supporting top plate 2, and the top surface of the supporting base 1 are all provided with fixed supports 12, and the two ends of the oblique supporting member 6 and the two ends of the oblique telescopic member are respectively rotatably connected to the fixed supports 12.

[0034] The upper side of the horizontal connecting member 4 is rotatably connected to the fixed support 12 on the bottom surface of the supporting top plate 2, and the lower side of the horizontal connecting member 4 is rotatably connected to the fixed support 12 on the supporting base 1, and the oblique telescopic member is rotatably connected to facilitate the connection of the oblique support member 6 and the oblique telescopic member through the fixed support 12.

[0035] The fixed support 12 includes two ear plates, on which a rotating shaft is arranged, and the ends of the oblique support member 6 and the ends of the oblique telescopic member are rotatably connected to the rotating shaft.

[0036] Furthermore, the horizontal fixed base 9 is evenly distributed along the outer circle of the mounting sleeve 11 , and the oblique telescopic member includes an outer set 10 and an inner rod 13 , the inner rod 13 is slidably connected to the middle of the outer set 10 , and a fastener 14 is provided on the outer set 10 .

[0037] By evenly arranging the horizontal fixed base 9 along the outer circle, the horizontal screw rod 7, the horizontal connecting member 4, the oblique support member 6 and the oblique telescopic member are correspondingly arranged, so as to ensure the supporting stability of the supporting top plate 2 to the upper structure to be supported 19, and the inner rod 13 is locked by the fastener 14 on the outer set 10 to provide upward supporting force to the horizontal connecting member 4 and the horizontal screw rod 7, thereby ensuring the pressure-bearing stability of the structure.

[0038] Preferably, 2 to 4 horizontal fixing bases 9 are equidistantly arranged along the outer circle of the mounting sleeve 11. The fastener 14 comprises a screw body, which is screwed onto the outer sleeve 10.

[0039] Furthermore, a locking piece 15 is movably provided on the liftable screw rod 8 , and the locking piece 15 is used to cooperate with the adjustable nut 5 .

[0040] The locking member 15 is used to lock the height of the adjustable nut 5 after the height is adjusted to prevent the nut from rotating.

[0041] The locking member 15 comprises a locking nut 3 which is threadedly connected to the lifting screw.

[0042] Furthermore, a limiting guide hole 16 is provided on the bottom surface of the liftable screw rod 8 , and a guide column 17 is provided at the bottom of the mounting sleeve 11 , and the guide column 17 is slidably matched with the limiting guide hole 16 .

[0043] The guide column 17 in the installation sleeve 11 is slidably matched with the limiting guide hole 16 of the liftable screw 8 to limit the rotation of the liftable screw 8 so that the liftable screw 8 can only move up and down, thereby ensuring a stable connection.

[0044] The cross section of the guide post 17 is preferably a regular polygon, and in the embodiment, a square.

[0045] Furthermore, the liftable screw rod 8 is connected to the center of the support top plate 2, and the mounting sleeve 11 is connected to the center of the support base 1, and the liftable screw rod 8 and the mounting sleeve 11 are coaxially arranged.

[0046] The mounting sleeve 11 is coaxially arranged with the liftable screw 8 , and the center of the support top plate 2 and the support base 1 corresponds to the axial position of the mounting sleeve 11 , thereby ensuring the support stability of the liftable screw 8 on the support top plate 2 and the upper structure to be supported 19 .

[0047] The steps for using the device are as follows:

[0048] 1. Review the number of prestressed support devices required around the components to be replaced (such as shear wall replacement, wall-to-beam and concrete column);

[0049] 2. Preliminary assembly of the prestressed support device, that is, adjusting the adjustable nut 5 so that the support top plate 2 is about 2 to 4 cm away from the contact surface of the support member, so that the support member can be smoothly placed in the support space;

[0050] 3. After the prestressed support device is initially assembled and placed in the support space, the vertical adjustable nut 5 is adjusted to make the support top plate 2 and the support member close to each other, and then the locking nut 3 is adjusted to apply horizontal force to convert it into vertical force through the oblique support rod, and the adjustable nut 5 is adjusted again; this is repeated to reach the required force value of the support, and after reaching the corresponding force value, the vertical nut is locked with the locking piece 15 to prevent the loss of the support prestress value;

[0051] 4. After the replacement construction is completed, loosen the vertical nut locking piece 15, the adjustable nut 5 and the locking nut 3 to achieve the unloading of the prestressed support and remove the prestressed support device.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable prestressed support device, characterized in that: It includes a support base, the top surface of the support base is provided with a mounting sleeve, the top of the mounting sleeve is rotatably provided with an adjustable nut, a liftable screw is sleeved in the mounting sleeve, the liftable screw is threadedly connected to the adjustable nut, a support top plate is provided on the top surface of the liftable screw, a plurality of horizontal fixed bases are provided on the side of the mounting sleeve, the horizontal fixed base is connected with a horizontal screw, a horizontal connecting piece is slidably provided on the horizontal screw, a rotatable oblique supporting piece is provided between the bottom surface of the support top plate and the horizontal connecting piece, a rotatable oblique telescopic piece is provided between the top surface of the support base and the horizontal connecting piece, and a locking nut for cooperating with the horizontal connecting piece is threadedly connected to the horizontal screw.

2. The adjustable prestressed support device according to claim 1, characterized in that: The upper and lower sides of the horizontal connecting member, the bottom surface of the supporting top plate and the top surface of the supporting base are all provided with fixed supports, and the two ends of the oblique supporting member and the two ends of the oblique telescopic member are respectively rotatably connected to the fixed supports.

3. The adjustable prestressed support device according to claim 2, characterized in that: The horizontal fixed base is evenly distributed along the outer circle of the mounting sleeve. The oblique telescopic member comprises an outer sleeve and an inner rod. The inner rod is slidably connected to the middle of the outer sleeve. The outer sleeve is provided with a fastener.

4. The adjustable prestressed support device according to claim 1, characterized in that: A locking piece is movably arranged on the liftable screw rod, and the locking piece is used to cooperate with the adjustable nut.

5. The adjustable prestressed support device according to claim 1, characterized in that: A limited guide hole is provided on the bottom surface of the liftable screw rod, and a guide column is provided at the bottom of the mounting sleeve, and the guide column is slidably matched with the limited guide hole.

6. The adjustable prestressed support device according to claim 1, characterized in that: The liftable screw is connected to the center of the supporting top plate, the mounting sleeve is connected to the center of the supporting base, and the liftable screw and the mounting sleeve are coaxially arranged.

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