Steel bar protective layer thickness control device

Abstract

The invention provides a steel bar protective layer thickness control device which comprises two fixing clamps which are symmetrically arranged, supporting plates are fixedly arranged at the ends, close to each other, of the fixing clamps, a U-shaped support is arranged between the two supporting plates, and the ends of the U-shaped support are rotationally and slidably connected with the supporting plates; the U-shaped support is provided with a transverse batten, the two ends of the transverse batten are connected with side battens through elastic arc sections, the side battens are perpendicular to the transverse batten, and the outer side of the end, away from the transverse batten, of each side batten is rotationally and slidably connected with the supporting plate. After the formwork is installed, only the U-shaped supports need to be lifted upwards, supporting between the formwork and the reinforcement cage can be completed, the thickness of a protective layer is controlled, operation is convenient and fast, the transverse battens are provided with the multiple supporting points to make contact with the formwork, the supporting range is enlarged, and the supporting effect is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of road construction, and in particular relates to a device for controlling the thickness of a steel bar protective layer. Background Art

[0002] During the pier construction process, the thickness of the protective layer must be controlled within the range of the component's stress, otherwise cracks will easily occur due to high pressure. If the thickness of the protective layer increases, the component's bearing capacity will decrease, while insufficient thickness of the protective layer will cause steel corrosion, and the bearing capacity and durability of the structure will be reduced.

[0003] In the prior art, a Chinese invention patent application with authorization announcement number CN110344545B discloses an adjustable screw for controlling the thickness of the steel bar protective layer of a pier column, wherein a nut is welded on a steel cage and firmly fixed with lap bars, the screw is put on, and the tail of the screw is welded with short steel bar heads in parallel to form a flat shape for easy rotation. The outer side of the screw head is sharpened, and the screw is received in the steel cage before the mold is closed, so that the mold can be closed smoothly and deformation and falling off caused by collision between the screw and the mold can be avoided; after the mold is closed, the screw is manually rotated to be ejected, and the extension length of the screw can be gradually adjusted to meet the designed steel bar protective layer thickness requirements.

[0004] However, the above-mentioned prior art is still found to have some shortcomings during the actual construction. On the one hand, after the mold is closed, the screw needs to be manually rotated to eject it, but it is not convenient to reach into the steel cage to rotate the screw after the mold is closed, and the screw needs to be rotated for several turns to screw it into place, which is less convenient to operate and time-consuming and labor-intensive; on the other hand, the end of the screw is exposed outside the steel cage and is pointed. The pointed end supports the template to control the thickness of the protective layer. There is a single point between the end of the screw and the template, and the support range of the template is small, and the support effect is limited.

[0005] Therefore, it is necessary to design a steel bar protective layer thickness control device that improves operational convenience, increases the support range, and improves the support effect to solve the current technical problems. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a steel bar protective layer thickness control device which improves operational convenience, increases the support range, and improves the support effect.

[0007] The technical solution of the present invention is: a steel bar protective layer thickness control device, comprising two symmetrically arranged fixing clamps, a support plate is fixedly arranged at one end of the fixing clamps close to each other, a U-shaped support is arranged between the two support plates, and the end of the U-shaped support is rotatably and slidably connected to the support plate;

[0008] The U-shaped support has a transverse strip, both ends of which are connected to side strips through elastic arc segments, the side strips are perpendicular to the transverse strip, and the outer side of one end of the side strip away from the transverse strip is rotatably and slidably connected to the support plate;

[0009] An upper stop bar is fixedly provided on one side of the support plate close to the U-shaped support, and the side panel strips abut against the bottom of the upper stop bar when they are rotated upward to a horizontal state, and a lower stop bar is fixedly provided on the support plate below the upper stop bar, and the spacing between the upper stop bar and the lower stop bar matches the width of the side panel strips, and an inclined guide surface is provided on one end of the lower stop bar close to the side panel strip, and the inclined guide surface smoothly transitions from a side of the lower stop bar close to the support plate to a side of the lower stop bar away from the support plate.

[0010] A reset mechanism is provided on the side strip; the reset mechanism has a sliding rod fixedly arranged on one side of the end of the side strip, the sliding rod is rotatably and slidably connected with the support plate, a limiting plate is fixedly arranged on the end of the sliding rod away from the side strip, and a spring is mounted on the outer side of the sliding rod between the limiting plate and the support plate.

[0011] Limiting support members are evenly arranged on one side of the transverse slat away from the side slat, and the length of the limiting support members is adjustable.

[0012] The position-limiting support member comprises a stud mounting seat fixedly arranged on one side of the transverse strip, the internal thread of the stud mounting seat is equipped with a stud, and a cone head is arranged on one end of the stud away from the stud mounting seat.

[0013] The fixing fixture has a U-shaped groove, an inner threaded tube connected to the inner part of the U-shaped groove is fixedly arranged on the outer side of the U-shaped groove, and a locking bolt is arranged inside the inner threaded tube.

[0014] A pulling assembly is centrally arranged on one side of the transverse slat close to the side slat, and a pulling rope is connected to the pulling assembly.

[0015] The pulling assembly has a pulling rod which forms an angle of 0 to 60 degrees with the side of the transverse strip, one end of the pulling rod is fixedly connected to the transverse strip, and the end of the pulling rod away from the transverse strip is fixedly connected to the pull rope.

[0016] A fixing ring is fixedly provided on the end of the pulling rod away from the horizontal strip, a plug is movably provided inside the fixing ring, a rope hole is provided at one end of the plug, a counterweight baffle is fixedly provided on the other end of the plug, and the outer diameter of the counterweight baffle is larger than the inner diameter of the fixing ring.

[0017] An opening matching the draw cord is provided on the outer side of the fixing ring along its axial direction.

[0018] A support bar is fixedly arranged between the ends of the two fixing clamps which are away from the support plate.

[0019] Beneficial effects of the present invention:

[0020] (1) After the template is installed, the present invention only needs to pull up the U-shaped support to complete the support between the template and the steel cage, control the thickness of the protective layer, and is easy to operate. In addition, the horizontal slats have multiple fulcrums that contact the template, thereby increasing the support range and improving the support effect.

[0021] (2) Two fixing fixtures are connected and fixed to two adjacent main bars of the steel cage. When installing the pier column formwork, the U-shaped support naturally droops and does not affect the installation and construction of the formwork. After the formwork is installed, the U-shaped support is pulled upward to rotate it to a horizontal state. The U-shaped support is used to support between the formwork and the steel cage to control the thickness of the protective layer.

[0022] (3) After the template is installed, the steel bar protective layer thickness control device lifts up the U-shaped support, and the side strips move away from the support plate under the action of the inclined guide surface, and the elastic arc segment is deformed. When the side strips rotate to a horizontal state, they just correspond to the space between the upper stop bar and the lower stop bar. At this time, the elastic arc segment is reset, and the side strips are embedded between the upper stop bar and the lower stop bar. The side strips are fixedly supported by the upper and lower stop bars, so that the U-shaped support maintains a horizontal support state. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is one of the structural schematic diagrams of the steel bar protective layer thickness control device in the present invention.

[0024] Figure 2 This is the second structural schematic diagram of the steel bar protective layer thickness control device in the present invention.

[0025] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0026] Figure 4 It is a schematic diagram of the structure of the U-shaped support in the present invention.

[0027] Figure 5 It is a schematic diagram of the structure of the fixing fixture in the present invention.

[0028] Figure 6 It is a schematic diagram of the installation of the steel bar protective layer thickness control device in the present invention.

[0029] Figure 7 for Figure 6 A partial enlarged view of point B in the middle. DETAILED DESCRIPTION

[0030] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is not intended to be any limitation on the present invention and its application or use. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete and to fully express the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limitations.

[0031] The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] like Figures 1 to 5 As shown, the steel bar protective layer thickness control device 100 includes two symmetrically arranged fixing clamps 1, a support plate 2 is fixedly arranged at one end of the fixing clamps 1 close to each other, a U-shaped support 3 is arranged between the two support plates 2, and the end of the U-shaped support 3 is rotatably and slidably connected to the support plate 2; the U-shaped support 3 has a transverse strip 31, and both ends of the transverse strip 31 are connected to side strips 32 through elastic arc segments 33, the side strips 32 are perpendicular to the transverse strip 31, and the outer side of the end of the side strip 32 away from the transverse strip 31 is rotatably and slidably connected to the support plate 2; the support plate 2 is fixedly provided with an upper stop bar 21 on one side close to the U-shaped support 3, and the side strip 32 is abutted against the bottom of the upper stop bar 21 when it is rotated upward to a horizontal state, and a lower stop bar 22 is fixedly provided on the support plate 2 below the upper stop bar 21, and the spacing between the upper stop bar 21 and the lower stop bar 22 matches the width of the side strip 32, and an inclined guide surface 221 is provided on one end of the lower stop bar 22 close to the side strip 32, and the inclined guide surface 221 smoothly transitions from the side of the lower stop bar 22 close to the support plate 2 to the side of the lower stop bar 22 away from the support plate 2; in this embodiment, as Figure 6 and 7 As shown, two fixing fixtures 1 are connected and fixed to two adjacent main bars of the steel cage. When the pier column formwork is installed, the U-shaped support 3 droops naturally. Figure 1 As shown, it does not affect the installation and construction of the template. After the template is installed, pull the U-shaped support 3 upward to rotate it to a horizontal state, as shown in FIG. Figure 2When the support plate 32 is in the horizontal position, the side plate 32 is in the horizontal position, and the side plate 32 is in the horizontal position, so that the support plate 32 is in the horizontal position, and ...

[0033] In some embodiments, in order to ensure that the side strip 32 can be inserted between the upper stop bar 21 and the lower stop bar 22 when it rotates to the horizontal position, so as to fix the U-shaped support 3, a reset mechanism 4 is provided on the side strip 32; Figure 2 and 3 As shown, the reset mechanism 4 has a slide bar 41 fixedly arranged on one side of the end of the side plate strip 32, and the slide bar 41 is rotatably and slidably connected to the support plate 2, and a limit plate 42 is fixedly arranged on the end of the slide bar 41 away from the side plate strip 32, and a spring 43 is mounted on the outer side of the slide bar 41 between the limit plate 42 and the support plate 2. When the side plate strip 32 rotates to the inclined guide surface 221, the side plate strip 22 moves in the direction away from the support plate 2. At this time, the slide bar 41 slides and the spring 43 is compressed. When the side plate strip 32 rotates to a horizontal state, it just corresponds to the space between the upper stop bar 21 and the lower stop bar 22. The release of the spring 43 can further promote the side plate strip 32 to be stably embedded in the space between the upper stop bar 21 and the lower stop bar 22; specifically, a through hole matching the slide bar 41 is opened on the support plate 2, and the slide bar 41 is rotatably and slidably assembled inside the through hole.

[0034] In some embodiments, Figure 5 As shown, a limiting support 6 is evenly arranged on the side of the transverse slat 31 away from the side slat 32. The length of the limiting support 6 is adjustable. The thickness of the protective layer in different projects may be different. By measuring and adjusting the length of the limiting support 6 before installing the template, support control suitable for different protective layer thicknesses can be achieved.

[0035] In some embodiments, Figure 2As shown, the limiting support 6 has a stud mounting seat 62 fixedly arranged on one side of the horizontal strip 31, the internal thread of the stud mounting seat 62 is assembled with a stud 61, and a cone head 611 is arranged on the end of the stud 61 away from the stud mounting seat 62, and an internal threaded hole is opened inside the stud mounting seat 62. By screwing the stud 61, the total length of the stud 61 and the stud mounting seat 62 can be adjusted, which is suitable for support control of different protective layer thicknesses.

[0036] In some embodiments, Figure 5 As shown, the fixing fixture 1 has a U-shaped groove 11, and an internally threaded tube 12 connected to the inside of the U-shaped groove 11 is fixedly arranged on the outside of the U-shaped groove 11, and a locking bolt 13 is arranged inside the internally threaded tube 12; when the fixing fixture 1 needs to be installed on the main reinforcement 200 of the steel cage, the U-shaped groove 11 is firstly put on the outside of the main reinforcement 200 of the steel cage, and then the locking bolt 13 is screwed so that the end of the locking bolt 13 is against the main reinforcement 200 of the steel cage, thereby realizing the fixed connection between the fixing fixture 1 and the main reinforcement 200 of the steel cage; the connection process does not require welding, which is convenient and quick.

[0037] In some embodiments, a pulling assembly 7 is centrally disposed on one side of the transverse slat 31 close to the side slat 32, and a pull rope 8 is connected to the pulling assembly 7; when it is inconvenient to reach in and pull the U-shaped support 3, the pull rope 8 can be used to push and pull the U-shaped support 3 upward for support.

[0038] In some embodiments, the pulling assembly 7 has a pulling rod 71 which forms an angle of 0 to 60 degrees with the side of the transverse slat 31, one end of the pulling rod 71 is fixedly connected to the transverse slat 31, and the end of the pulling rod 71 facing away from the transverse slat 31 is fixedly connected to the pull rope 8; if the pull rope 8 is directly connected to the transverse slat 31, the effective rotation torque of the pull rope 8 on the U-shaped strut 3 is close to or equal to zero, and it is not easy to pull the U-shaped strut 3; by setting the pulling rod 71 at an angle, the effective rotation torque of the pull rope 8 on the U-shaped strut 3 can be increased, which facilitates pulling the U-shaped strut 3 to rotate.

[0039] In some embodiments, a fixing ring 72 is fixedly provided on the end of the pulling rod 71 facing away from the horizontal slat 31, a plug 74 is movably provided inside the fixing ring 72, a rope hole 76 is provided at one end of the plug 74, and a counterweight baffle 75 is fixedly provided at the other end of the plug 74. The outer diameter of the counterweight baffle 75 is larger than the inner diameter of the fixing ring 72. After the U-shaped support 3 is pulled up and flipped into place by the pull rope 8, the pull rope 8 is released, and the counterweight baffle 75 will drive the plug 74 to slide downward from the fixing ring 72 under the action of gravity.

[0040] In some embodiments, an opening 73 matching the pull rope 8 is provided on the outer side of the fixing ring 72 along its axial direction. After the U-shaped support 3 is pulled up and flipped into place by the pull rope 8, the pull rope 8 is released, and the counterweight baffle 75 drives the plug 74 to slide downward from the fixing ring 72 under the action of gravity. At this time, the pull rope 8 is pulled again, and the pull rope 8 can be moved outward from the opening 73, and the plug 74, the counterweight baffle 75 and the pull rope 8 can be taken out and recycled.

[0041] In some embodiments, a support bar 5 is fixedly provided between the ends of the two fixing clamps 1 facing away from the support plate 2. The length of the support bar 5 is determined according to the spacing between two adjacent main reinforcement bars 200 of the steel cage. The support bar 5 supports between the two fixing clamps 1 to ensure that the distance between the two fixing clamps 1 is fixed.

[0042] So far, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0043] The above-mentioned embodiments only express some implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A steel bar protective layer thickness control device, characterized in that: It comprises two symmetrically arranged fixing clamps, a support plate is fixedly arranged at one end of the fixing clamps close to each other, a U-shaped support is arranged between the two support plates, and the end of the U-shaped support is rotatably and slidably connected with the support plate; The U-shaped support has a transverse strip, both ends of which are connected to side strips through elastic arc segments, the side strips are perpendicular to the transverse strip, and the outer side of one end of the side strip away from the transverse strip is rotatably and slidably connected to the support plate; An upper stop bar is fixedly provided on one side of the support plate close to the U-shaped support, and the side panel strips abut against the bottom of the upper stop bar when they are rotated upward to a horizontal state, and a lower stop bar is fixedly provided on the support plate below the upper stop bar, and the spacing between the upper stop bar and the lower stop bar matches the width of the side panel strips, and an inclined guide surface is provided on one end of the lower stop bar close to the side panel strip, and the inclined guide surface smoothly transitions from a side of the lower stop bar close to the support plate to a side of the lower stop bar away from the support plate.

2. The steel bar protective layer thickness control device according to claim 1 is characterized in that: A reset mechanism is provided on the side strip; the reset mechanism has a sliding rod fixedly arranged on one side of the end of the side strip, the sliding rod is rotatably and slidably connected with the support plate, a limiting plate is fixedly arranged on the end of the sliding rod away from the side strip, and a spring is mounted on the outer side of the sliding rod between the limiting plate and the support plate.

3. The steel bar protective layer thickness control device according to claim 1 is characterized in that: Limiting support members are evenly arranged on one side of the transverse slat away from the side slat, and the length of the limiting support members is adjustable.

4. The steel bar protective layer thickness control device according to claim 3 is characterized in that: The position-limiting support member comprises a stud mounting seat fixedly arranged on one side of the transverse strip, the internal thread of the stud mounting seat is equipped with a stud, and a cone head is arranged on one end of the stud away from the stud mounting seat.

5. The steel bar protective layer thickness control device according to claim 1 is characterized in that: The fixing fixture has a U-shaped groove, an inner threaded tube connected to the inner part of the U-shaped groove is fixedly arranged on the outer side of the U-shaped groove, and a locking bolt is arranged inside the inner threaded tube.

6. The steel bar protective layer thickness control device according to claim 1, characterized in that: A pulling assembly is centrally arranged on one side of the transverse slat close to the side slat, and a pulling rope is connected to the pulling assembly.

7. The steel bar protective layer thickness control device according to claim 6, characterized in that: The pulling assembly has a pulling rod which forms an angle of 0 to 60 degrees with the side of the transverse strip, one end of the pulling rod is fixedly connected to the transverse strip, and the end of the pulling rod away from the transverse strip is fixedly connected to the pull rope.

8. The steel bar protective layer thickness control device according to claim 7, characterized in that: A fixing ring is fixedly provided on the end of the pulling rod away from the horizontal strip, a plug is movably provided inside the fixing ring, a rope hole is provided at one end of the plug, a counterweight baffle is fixedly provided on the other end of the plug, and the outer diameter of the counterweight baffle is larger than the inner diameter of the fixing ring.

9. The steel bar protective layer thickness control device according to claim 8, characterized in that: An opening matching the draw cord is provided on the outer side of the fixing ring along its axial direction.

10. The steel bar protective layer thickness control device according to claim 1, characterized in that: A support bar is fixedly arranged between the ends of the two fixing clamps which are away from the support plate.

Images