Guide head device for mounting longitudinal reinforcing steel bars of bridge

Abstract

The utility model relates to a guide head device for mounting a longitudinal steel bar of a bridge, the guide head device is used for guiding when the longitudinal steel bar penetrates through an annular stirrup, the guide head device comprises a guide section, the guide section comprises a first end and a second end, the guide section is provided with an outer surface, and the diameter of the outer surface is gradually increased from the first end to the second end; the sleeve section and the guide section are connected or integrally formed; the sleeve section is arranged at the second end of the guide section; the outer diameter of the sleeve section is not greater than the inner diameter of the annular stirrup; the clamping piece comprises a fixed sleeve and a clamping sleeve; the fixed sleeve is installed at the first end of the guide section and located in the guide section. The clamping sleeve is in threaded connection with the fixing sleeve, and a longitudinal steel bar is clamped by the clamping sleeve. The guide head device can guide the process that the longitudinal steel bar penetrates through the annular stirrup, and the guide head device is prevented from falling off from the end of the longitudinal steel bar.

Description

Technical Field

[0001] The present application relates to the technical field of bridge wet joints, and in particular to a guide head device for installing longitudinal reinforcement bars of bridges. Background Art

[0002] During the construction of the bridge, it is necessary to assemble the prefabricated concrete beams in blocks to form a large-span continuous beam, and to use cast-in-place concrete to form wet joints between the beams. Before pouring the concrete, it is necessary to insert longitudinal steel bars into the annular stirrups on both sides of the block beams to form a steel bar binding structure. Since there are many groups of annular stirrups in the longitudinal direction, and there is a certain gap between adjacent annular stirrups. In the process of inserting the longitudinal steel bars, the ends are prone to deflection, which makes it impossible to pass through the annular stirrups normally. The operator needs to make multiple corrections during the insertion process, which makes the process of inserting the longitudinal steel bars very cumbersome, seriously affecting the construction efficiency. Utility Model Content

[0003] Based on this, it is necessary to provide a guide head device for installing longitudinal reinforcement of bridges, and its specific technical solution is as follows.

[0004] A guide head device for installing longitudinal reinforcement of a bridge, used for guiding the longitudinal reinforcement when passing through annular stirrups, the guide head device comprising:

[0005] A guide section, comprising a first end and a second end, wherein the guide section has an outer surface with a diameter gradually increasing from the first end to the second end;

[0006] A sleeve section is connected to or integrally formed with the guide section; the sleeve section is arranged at the second end of the guide section; the outer diameter of the sleeve section is not greater than the inner diameter of the annular stirrup;

[0007] The clamping member comprises a fixed sleeve and a clamping sleeve; the fixed sleeve is installed at the first end of the guide section and is located inside the guide section; the clamping sleeve is threadedly connected to the fixed sleeve, and the clamping sleeve clamps a longitudinal steel bar.

[0008] Furthermore, the clamping sleeve comprises a tube body, a locking collar and a locking nut;

[0009] The tube body comprises an external thread section and a clamping section; the clamping section comprises a plurality of clamping springs, the plurality of clamping springs are connected to the end of the external thread section and are arranged along the circumference of the external thread section;

[0010] The locking collar is movably sleeved on the pipe body, and when the locking collar moves to the clamping section, it squeezes the clamping spring sheet so that the clamping spring sheet clamps the longitudinal steel bar; the locking nut is connected to the external thread section and is used to abut against the locking collar.

[0011] Furthermore, the clamping spring sheet includes a clamping surface facing the axis of the external thread segment, and a first matching surface away from the clamping surface, and the first matching surface is inclined relative to the clamping surface, so that the thickness of the clamping spring sheet gradually increases in a direction away from the external thread segment;

[0012] The locking collar includes a matching hole extending in the axial direction, the matching hole includes a straight section and an enlarged section, the straight section is sleeved on the external thread section, when the locking collar moves toward the direction where the clamping section is located, the enlarged section squeezes the first matching surface, so that the inner diameter of the clamping section becomes smaller.

[0013] Furthermore, the straight tube section is smooth.

[0014] Furthermore, a rubber sheet is provided on the clamping surface.

[0015] Furthermore, the fixed sleeve is provided with an internal thread matching the external thread section.

[0016] Furthermore, the inner diameter of the sleeve section is larger than the diameter of the longitudinal steel bars, and the sleeve section is used to accommodate the insertion of multiple longitudinal steel bars.

[0017] Furthermore, the length of the guide head device is greater than the distance between two adjacent annular stirrups.

[0018] Beneficial effects: The utility model provides a guide head device for installing longitudinal reinforcements of bridges. The longitudinal reinforcements are fixed in the guide head device by a clamping piece, which can guide the process of the longitudinal reinforcements being inserted into the annular stirrups, avoid the end of the longitudinal reinforcements from bending downward, and ensure that the longitudinal reinforcements can be smoothly inserted into the annular stirrups. The longitudinal reinforcements are clamped by the clamping piece, which can maintain the stability of the guide head device and prevent the guide head device from falling off from the end of the longitudinal reinforcement. The fixed sleeve and the clamping sleeve are connected by threads, which facilitates the disassembly and assembly between the reinforcement and the guide head device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the structure of the guide head device clamping the steel bar;

[0021] Figure 2 is a cross-sectional view of the guide head device;

[0022] Figure 3 is an exploded schematic diagram of the clamping sleeve;

[0023] Figure 4 It is a cross-sectional view of the clamping sleeve when it is clamped;

[0024] Figure 5 It is a cross-sectional view when the clamping sleeve is not clamped;

[0025] Figure 6 This is a schematic diagram of using a guide device to clamp the longitudinal reinforcement and then pass it through the annular stirrup;

[0026] Description of reference numerals: 1. guide section; 2. sleeve section; 3. clamping member; 4. longitudinal reinforcement; 5. annular stirrup;

[0027] 11. first end; 12. second end;

[0028] 31. Fixed sleeve; 32. Clamping sleeve; 33. Tube body; 34. Locking collar; 35. Locking nut;

[0029] 331, external thread section; 332, clamping spring; 333, clamping surface; 334, first mating surface;

[0030] 341. Matching hole; 342. Straight section; 343. Enlarged section. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0037] Example

[0038] Reference Figure 1 This embodiment provides a guide head device for installing the longitudinal reinforcement 4 of a bridge, which is used to guide the longitudinal reinforcement 4 when passing through the annular stirrup 5. Specifically, referring to Figure 2 As shown, the guide head device includes a guide section 1, a sleeve section 2 and a clamping member 3.

[0039] The guide section 1 includes a first end 11 and a second end 12, and the guide section 1 has an outer surface with a diameter gradually increasing from the first end 11 to the second end 12; that is, the outer surface of the guide section 1 forms a truncated cone-shaped inclined surface or a conical inclined surface. During the threading process, the guide section 1 is used for guidance. In order to further improve the smoothness of the guidance, the outer surface of the first end 11 can be set to a spherical surface.

[0040] The sleeve section 2 is connected to or integrally formed with the guide section 1. The sleeve section 2 is arranged at the second end 12 of the guide section 1. The sleeve is a straight-cylindrical structure, and the outer diameter of the sleeve section 2 is not greater than the inner diameter of the annular stirrup 5, and can be specifically set to be smaller than the inner diameter of the environmental stirrup, so as to ensure that the guide head device can move in the annular stirrup 5 and is not affected by the longitudinal steel bars 4 that have been penetrated.

[0041] The clamping member 3 includes a fixed sleeve 31 and a clamping sleeve 32, wherein the fixed sleeve 31 is welded to the first end 11 of the guide section 1 and is located inside the guide section 1. The clamping sleeve 32 is threadedly connected to the fixed sleeve 31, and the clamping sleeve 32 clamps a longitudinal steel bar 4. In the process of threading the longitudinal steel bar 4, the clamping sleeve 32 is first used to clamp a longitudinal steel bar 4, and then the clamping sleeve 32 is extended into the guide section 1, and the sleeve section 2 is rotated to connect the fixed sleeve 31 and the clamping sleeve 32, so as to complete the installation between the longitudinal steel bar 4 and the guide head device. When separating the guide head device from the longitudinal steel bar 4, it is only necessary to relatively rotate the steel bar and the sleeve section 2, and disassemble the clamping sleeve. In the process of threading the longitudinal steel bar 4, the clamping member 3 is used to connect the longitudinal steel bar 4 with the guide head device, so as to avoid the guide head device from falling off from the end of the longitudinal steel bar 4, and to avoid the guide head device from falling off due to improper operation or other factors, thereby affecting the threading operation, and ensuring the smoothness of the threading process.

[0042] The present embodiment provides a guide head device for installing the longitudinal reinforcement 4 of a bridge. The longitudinal reinforcement 4 is fixed in the guide head device by a clamping member 3, which can guide the process of the longitudinal reinforcement 4 being inserted into the annular hoop 5, thereby preventing the end of the longitudinal reinforcement 4 from bending downward, and ensuring that the longitudinal reinforcement 4 can be smoothly inserted into the annular hoop 5. The clamping member 3 clamps the longitudinal reinforcement 4, which can maintain the stability of the guide head device and prevent the guide head device from falling off from the end of the longitudinal reinforcement 4. The fixing sleeve 31 and the clamping sleeve 32 are connected by threads, which facilitates the disassembly and assembly between the reinforcement and the guide head device.

[0043] Specifically, refer to Figure 2 and Figure 3As shown, the clamping sleeve 32 includes a tube body 33, a locking collar 34 and a locking nut 35. The tube body 33 includes an external thread section 331 and a clamping section; the clamping section includes a plurality of clamping springs 332, which are connected to the end of the external thread section 331 and arranged along the circumference of the external thread section 331. Each clamping spring 332 is independent of each other, and can be deformed toward the axis of the external thread section 331 by squeezing the clamping spring 332.

[0044] The locking collar 34 is movably sleeved on the tube body 33, and when the locking collar 34 moves to the clamping section, it squeezes the clamping spring piece 332, so that the clamping spring piece 332 is deformed toward the axis of the external thread, so that the clamping spring piece 332 clamps the longitudinal steel bar 4. The locking nut 35 is connected to the external thread section 331, and when the locking collar 34 moves to the clamping section, the locking nut 35 is moved to abut against the locking collar 34, so as to ensure the locking of the longitudinal steel bar 4.

[0045] Specifically, refer to Figure 4 and Figure 5 As shown, the clamping spring piece 332 includes a clamping surface 333 facing the axis of the external thread section 331, and a first mating surface 334 away from the clamping surface 333. The first mating surface 334 is inclined relative to the clamping surface 333, so that the thickness of the clamping spring piece 332 gradually increases in the direction away from the external thread section 331. The locking collar 34 includes a mating hole 341 extending in the axial direction. The mating hole 341 includes a straight section 342 and an enlarged section 343. The straight section 342 is sleeved on the external thread section 331. When the locking collar 34 moves toward the direction where the clamping section is located, the enlarged section 343 squeezes the first mating surface 334, so that the inner diameter of the clamping section becomes smaller. Figure 4 As shown, when the locking collar 34 moves to the clamping section, the enlarged section 343 squeezes the first mating surface 334, causing the clamping spring 332 to deform and the inner diameter of the clamping section to decrease, thereby clamping the longitudinal steel bar 4, and using the locking nut 35 to abut against the locking collar 34 to maintain stable clamping. Figure 5 As shown, when the clamping sleeve 32 needs to be removed, the locking nut 35 is loosened and the locking collar 34 is moved so that the locking collar 34 leaves the clamping section, and the clamping spring 332 no longer clamps the longitudinal steel bar 4, thereby the clamping sleeve 32 and the longitudinal steel bar 4 can be separated.

[0046] Specifically, the straight tube section 342 is smooth, which facilitates the movement of the locking ring 34 on the external thread section 331 .

[0047] Specifically, a rubber sheet may be provided on the clamping surface 333. The rubber sheet is provided so that when the clamping sheet clamps the longitudinal steel bar 4, the rubber sheet is deformed, thereby increasing the friction force, improving the reliability of clamping, and protecting the steel bar surface. The rubber sheet may be connected to the clamping surface 333 by bonding or other methods, and the rubber sheet is not shown in the figure.

[0048] Specifically, the inner diameter of the sleeve section 2 is larger than the diameter of the longitudinal steel bar 4, and the sleeve section 2 is used to accommodate the insertion of multiple longitudinal steel bars 4. One steel bar is connected to the guide device through the clamp 3, and the remaining steel bars are directly inserted into the guide device and abut against the inner wall surface of the guide section 1. When the longitudinal steel bars 4 are inserted, all the longitudinal steel bars 4 are pushed as a whole. The specific number of the longitudinal steel bars 4 can be determined according to the number of steel bars to be inserted.

[0049] Specifically, refer to Figure 6 As shown, the length of the guide device is greater than the spacing between two adjacent annular stirrups 5. This prevents the guide device from sinking into the gap between the two annular stirrups 5, ensuring smooth movement of the guide device.

[0050] Method of use: pass a longitudinal steel bar 4 through the clamping sleeve 32, move the locking collar 34 so that the clamping spring 332 clamps the longitudinal steel bar 4, and move the locking nut 35 until it abuts against the locking collar 34. Then insert the longitudinal steel bar 4 with the clamping sleeve 32 into the guide section 1, and rotate the sleeve section 2 so that the clamping sleeve 32 and the fixed sleeve 31 are threaded and connected. Finally, according to the number of longitudinal steel bars 4 that need to be inserted, put the remaining longitudinal steel bars 4 into the guide head device and abut against the inner wall of the guide section 1, place the guide head device in the annular stirrup 5, and the construction personnel push all the longitudinal steel bars 4 as a whole. The guide head device is a moving guide for the longitudinal steel bars 4.

[0051] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A guide head device for installing longitudinal reinforcement of a bridge, used for guiding the longitudinal reinforcement when passing through annular stirrups, characterized in that: The guide head device comprises: A guide section, comprising a first end and a second end, wherein the guide section has an outer surface with a diameter gradually increasing from the first end to the second end; A sleeve section is connected to or integrally formed with the guide section; the sleeve section is arranged at the second end of the guide section; the outer diameter of the sleeve section is not greater than the inner diameter of the annular stirrup; The clamping member comprises a fixed sleeve and a clamping sleeve; the fixed sleeve is installed at the first end of the guide section and is located inside the guide section; the clamping sleeve is threadedly connected to the fixed sleeve, and the clamping sleeve clamps a longitudinal steel bar.

2. A guide head device for installing longitudinal reinforcement of a bridge according to claim 1, characterized in that: The clamping sleeve comprises a tube body, a locking collar and a locking nut; The tube body comprises an external thread section and a clamping section; the clamping section comprises a plurality of clamping springs, the plurality of clamping springs are connected to the end of the external thread section and are arranged along the circumference of the external thread section; The locking collar is movably sleeved on the pipe body, and when the locking collar moves to the clamping section, it squeezes the clamping spring sheet so that the clamping spring sheet clamps the longitudinal steel bar; the locking nut is connected to the external thread section and is used to abut against the locking collar.

3. A guide head device for installing longitudinal reinforcement of a bridge according to claim 2, characterized in that: The clamping spring sheet comprises a clamping surface facing the axis of the external thread segment, and a first mating surface away from the clamping surface, wherein the first mating surface is inclined relative to the clamping surface so that the thickness of the clamping spring sheet gradually increases in a direction away from the external thread segment; The locking collar includes a matching hole extending in the axial direction, the matching hole includes a straight section and an enlarged section, the straight section is sleeved on the external thread section, when the locking collar moves toward the direction where the clamping section is located, the enlarged section squeezes the first matching surface, so that the inner diameter of the clamping section becomes smaller.

4. A guide head device for installing longitudinal reinforcement of a bridge according to claim 3, characterized in that: The straight tube section has a smooth surface.

5. A guide head device for installing longitudinal reinforcement of a bridge according to claim 3, characterized in that: The clamping surface is provided with a rubber sheet.

6. A guide head device for installing longitudinal reinforcement of a bridge according to claim 2, characterized in that: The fixed sleeve is provided with an internal thread matched with the external thread section.

7. A guide head device for installing longitudinal reinforcement of a bridge according to claim 1, characterized in that: The inner diameter of the sleeve section is greater than the diameter of the longitudinal steel bars, and the sleeve section is used to accommodate the insertion of multiple longitudinal steel bars.

8. The guide head device for installing longitudinal reinforcement of a bridge according to claim 1, characterized in that: The length of the guide device is greater than the distance between two adjacent annular stirrups.

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