A beam bottom centering device and method

Abstract

The present application relates to a beam bottom centering device and method, which includes: at least one pair of abutting members, the abutting members are used to slide against the side walls of the beam body; a pull rope, the two ends of which are respectively used to connect with the abutting members on both sides of the beam body, so as to pass over the beam body in a direction parallel to the bottom surface of the beam body; a marking member, which is connected to the midpoint of the pull rope, so as to contact the beam body and mark the beam body. The operator can control the abutting members on both sides of the beam body to slide to drive the pull rope and the marking member to move, and complete the marking of the center line on the bottom surface of the beam body through the marking member. Therefore, it is achieved that the operator does not need to drill under the beam body to draw the line, and the personal safety of the construction workers can be effectively guaranteed.

Description

Technical Field

[0001] The present application relates to the field of box girder erection construction, and in particular to a beam bottom centering device and method. Background Art

[0002] During the construction of bridges and highways, a longitudinal center line must be drawn on the bottom of the box girder with a stone pencil before the box girder is erected. This will facilitate the construction workers to align the center line of the beam with the longitudinal center line of the support when the beam is subsequently dropped onto the support.

[0003] In the related technology, when the center line of the bottom of the beam is being measured, a gantry crane or a bridge erection machine is required to lift the box beam to a certain height, and construction workers drill under the box beam to draw the center line.

[0004] However, in the above method, there is a major safety hazard of the box girder falling instantly, and the personal safety of the construction workers cannot be guaranteed, which needs further improvement. Summary of the invention

[0005] The embodiment of the present application provides a beam bottom centering device and a method of using the same, so as to solve the problem in the related art that construction workers are required to drill under the beam body to perform centering marking, which poses a great safety hazard.

[0006] In a first aspect, a beam bottom centering device is provided.

[0007] A beam bottom centering device, comprising:

[0008] At least one pair of abutting members, the abutting members being used for slidingly abutting against the side walls of the beam body;

[0009] A pull rope, two ends of which are respectively used to connect with the abutment members on both sides of the beam body so as to pass over the beam body in a direction parallel to the bottom surface of the beam body;

[0010] A marking member is connected to the midpoint of the pull rope and is used for contacting the beam body and marking the beam body.

[0011] In some embodiments, the draw cord comprises:

[0012] At least two elastic telescopic parts are symmetrically arranged on both sides of the marking part to passively cooperate with the distance change between the marking part and the abutting parts on both sides, and make the length of the pull rope body on both sides of the marking part always consistent.

[0013] In some embodiments, the elastic telescopic member is a spring whose two ends are respectively connected to the abutting member and the marking member.

[0014] In some embodiments, the abutting member comprises:

[0015] A side wall abutment portion, which is used for slidingly abutting against the side wall of the beam body;

[0016] The bottom plate abutment portion is used to abut against the bottom surface of the beam body in parallel, and the end of the pull rope is fixedly connected to the bottom plate abutment portion, and,

[0017] The side wall fitting portion and the bottom plate fitting portion are connected via a rotating member and are movably arranged with an adjustable angle between them.

[0018] In some embodiments, the rotating member is a hinge with leaf swings on both sides, and a fastening bolt is provided at the rotating shaft thereof, and the fastening bolt is used to fix the leaf swings on both sides of the hinge for rotational cooperation.

[0019] In some embodiments, the marking element comprises:

[0020] A fixing block connected to the pull rope;

[0021] A marking pen is arranged on one side of the fixing block and is used for contacting and marking the bottom surface of the beam body.

[0022] In some embodiments, an operating handle is provided on one side of the abutting member.

[0023] In a second aspect, a beam bottom centering method is provided.

[0024] A method for using a beam bottom centering device, comprising:

[0025] The side walls on both sides of the beam body are slidably abutted against a clamping member;

[0026] Control the pull rope to connect the two abutting members at the bottom surface side of the beam body, and make the pull rope parallel to the bottom surface of the beam body while making the marking member abut against the bottom surface of the beam body;

[0027] The tightening members on both sides of the sliding beam body are used to mark the bottom surface of the beam body through the marking member to obtain the center line of the bottom of the beam.

[0028] In some embodiments, the beam body may be an orthogonal beam body with two side walls of the same length, an oblique beam body with two side walls of different lengths, or an irregular beam body with a continuously changing width.

[0029] In some embodiments, the side walls on both sides of the beam body are slidably abutted against a clamping member, so that the side wall abutment portion is closely abutted against the side wall of the beam body, and the bottom plate abutment portion is parallel and closely abutted against the bottom surface of the beam body.

[0030] The beneficial effects of the technical solution provided by this application include:

[0031] The embodiment of the present application provides a beam bottom centering device and a method of using the same. When the center line of the bottom surface of the beam is being engraved, a clamping piece is slidably pressed against the side walls of the beam on both sides, and a pull rope parallel to the bottom surface of the beam is stretched between the two walls. The marking piece connected to the midpoint of the pull rope can correspond to the midpoint of the width of the bottom surface of the beam. At this time, the operator can control the sliding of the clamping pieces on both sides of the beam to drive the pull rope and the marking piece to move, and complete the marking of the center line on the bottom surface of the beam through the marking piece. Therefore, there is no need for the operator to drill under the beam to draw the line, which can effectively protect the personal safety of the construction workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments 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 creative work.

[0033] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present application;

[0034] Figure 2 This is a schematic diagram of the embodiment of the present application with the center line drawn at the bottom of the orthogonal box beam;

[0035] Figure 3 This is a schematic diagram of the embodiment of the present application with the center line drawn on the bottom of the skew box girder;

[0036] Figure 4 for Figure 1 A schematic diagram of the structure enlargement of the A region in the middle;

[0037] Figure 5 A schematic diagram of a hinge structure provided for an application embodiment;

[0038] Figure 6 A schematic diagram of the marking structure provided for an embodiment of the application.

[0039] In the figure:

[0040] 1. Beam body;

[0041] 10. abutting member; 100. side wall fitting portion; 101. bottom plate fitting portion; 102. hinge; 1020. fastening bolt; 103. operating handle;

[0042] 20, draw rope; 200, spring;

[0043] 30. Marking piece; 300. Fixing block; 301. Marking pen. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0045] The embodiments of the present application provide a beam bottom centering device and method, which can solve the problem in the related technology that construction workers need to drill under the beam body to draw the centering line, which poses a great safety hazard.

[0046] In a first aspect, an embodiment of the present application provides a beam bottom centering device.

[0047] Reference Figure 1 , a beam bottom centering device, comprising:

[0048] At least one pair of abutting members 10, wherein the abutting members 10 are used for slidingly abutting against the side walls of the beam body 1;

[0049] A pull rope 20, both ends of which are respectively used to connect with the abutting members 10 on both sides of the beam body 1, so as to pass over the beam body 1 in a direction parallel to the bottom surface of the beam body 1;

[0050] A marking member 30 is connected to the midpoint of the pull rope 20 to contact the beam body 1 and mark the beam body 1 .

[0051] With such an arrangement, when the center line of the bottom surface of the beam body 1 is being engraved, the clamping piece 10 is slidably pressed against the side walls of the beam body 1 on both sides, and a pull rope 20 parallel to the bottom surface of the beam body 1 is stretched between the two walls. The marking piece 30 connected to the midpoint of the pull rope 20 may correspond to the midpoint of the width of the bottom surface of the beam body 1. At this time, the operator can control the sliding of the clamping pieces 10 on both sides of the beam body 1 to drive the pull rope 20 and the marking piece 30 to move, and complete the marking of the center line on the bottom surface of the beam body 1 through the marking piece 30. Therefore, there is no need for the operator to drill under the beam body 1 to draw the line, so the personal safety of the construction workers can be effectively protected.

[0052] When the above solution is used for construction, if the pull rope 20 cannot be stretched, the abutting members 10 on both sides of the beam body 1 need to move synchronously, which will have certain requirements on the synchronous operation of the construction workers. At the same time, when the above solution is used on an oblique beam with inconsistent lengths of the two side walls or an irregular beam with continuously changing width of the beam body, the marking member on the pull rope will still not be able to move and draw lines smoothly on the bottom surface of the beam body.

[0053] Based on the above problems, in a preferred embodiment, referring to Figure 2 and Figure 3 , the pull rope 20 comprises:

[0054] At least two elastic telescopic parts are symmetrically arranged on both sides of the marking part 30 to passively cooperate with the distance change between the marking part 30 and the abutting parts 10 on both sides, and make the rope length of the pull rope 20 on both sides of the marking part 30 always consistent.

[0055] Among them, the elastic coefficients of the elastic telescopic parts on both sides of the marking part 30 must be kept consistent, and elastic telescopic parts with inconsistent elastic coefficients cannot be used, so that when the pull rope 20 is stretched, the length of the rope body on both sides of the marking part 30 can always remain consistent.

[0056] Set it up like this, refer to Figure 3 , it is possible to realize that there is no need for synchronous sliding between the two clamping members 10. Even if there is a relative speed or the distance between the two is constantly changing, the pull rope 20 between the clamping members 10 can be kept at the midpoint of the pull rope 20 under the action of the elastic telescopic member, and the marking member 30 is still at the midpoint between the two clamping members 10, that is, the midpoint in the width direction of the bottom surface of the beam body 1. The marking member 30 will always mark the center of the bottom surface of the beam body 1. Furthermore, the construction convenience for construction personnel is greatly improved. At the same time, when marking the center of the bottom surface of the oblique beam or irregular beam body, the two clamping members 10 can be independently moved from one end of the side wall of the beam body 1 to the other end, so that the centering of the bottom surface of the oblique beam or irregular beam body can be successfully completed, which has a very significant practical significance.

[0057] Optionally, the elastic telescopic member is a spring 200 whose two ends are respectively connected to the abutting member 10 and the marking member 30 .

[0058] In this embodiment, the pull rope 20 is composed of two springs 200 on both sides of the marking member 30, and connecting rods for hooking the ends of the springs 200 are provided at the bottom of the pressing member 10 and on both sides of the marking member 30, so that the springs 200 can connect the pressing member 10 and the marking member 30. In addition, in other embodiments, the elastically retractable member can adopt other elastically retractable material structures.

[0059] Reference Figure 3 Optionally, the abutting member 10 comprises:

[0060] A side wall abutment portion 100, which is used to slide against the side wall of the beam body 1;

[0061] The bottom plate abutment portion 101 is used to abut against the bottom surface of the beam body 1 in parallel, and the end of the pull rope 20 is fixedly connected to it, and,

[0062] The side wall fitting portion 100 and the bottom plate fitting portion 101 are connected via a rotating member and are movably arranged so that the angle between the two can be adjusted.

[0063] The side wall fitting portion 100 and the bottom plate fitting portion 101 are both planar plate structures, which are respectively used to slide against the side wall and the bottom surface of the beam body 1 and are connected by a rotating member at the connection between the side wall and the bottom surface of the beam body 1 .

[0064] In this way, the side wall fitting part 100 and the bottom plate fitting part 101 form an angle with the help of the rotating part to abut against the chamfered structure connecting the side wall and the bottom surface of the beam body 1. With the cooperation of the clamping parts 10 on both sides of the beam body 1, the edge position of the bottom surface of the beam body 1 can be effectively determined, thereby ensuring that the marking part 30 between the clamping parts 10 on both sides can be accurately located at the midpoint of the width direction of the bottom surface of the beam body 1, thereby avoiding the problem that when the rope body is pulled, the specific position of the edges on both sides of the bottom surface cannot be accurately determined due to the chamfered structure between the side wall and the bottom surface of the beam body 1, and the marking part 30 cannot be accurately located at the midpoint of the width direction of the bottom surface of the beam body 1, thereby ensuring the accuracy of the centering line on the bottom surface of the beam body 1.

[0065] Reference Figure 4 Optionally, the rotating member is a hinge 102 with page swings on both sides, and a fastening bolt 1020 is provided at the rotating shaft thereof, and the fastening bolt 1020 is used to fix the page swings on both sides of the hinge 102 for rotational cooperation.

[0066] Among them, the hinges on both sides of the hinge 102 are welded and fixed on the side wall fitting part 100 and the bottom plate fitting part 101, so as to realize the rotational connection between the side wall fitting part 100 and the bottom plate fitting part 101. At the same time, the fastening bolts 1020 can lock the hinge 102 after being tightened, so as to fix the angle between the side wall fitting part 100 and the bottom plate fitting part 101, so that the fastening member 10 can be smoothly fastened to the side wall and bottom surface of the beam body 1.

[0067] Reference Figure 5 Optionally, the marking member 30 includes:

[0068] A fixing block 300 connected to the pull rope 20;

[0069] A marking pen 301 is disposed on one side of the fixing block 300 to contact and mark the bottom surface of the beam body 1 .

[0070] The two sides of the fixed block 300 are connected to the two springs 200 constituting the tension, and a slot is provided on the fixed block 300. The marking pen 301 is inserted into the slot, and its top end extends out of the slot and can contact and abut against the bottom surface of the beam body 1 after the pull rope 20 is straightened, so as to draw lines on the bottom surface of the beam body 1 during the subsequent movement process.

[0071] In this embodiment, the marking pen 301 is a columnar stone pencil, and the top of the pencil is an elliptical head, so that it can draw lines on the bottom surface of the beam body 1. In other embodiments, other objects can be used as the marking pen 301.

[0072] Reference Figure 1 Optionally, an operating handle 103 is provided on one side of the abutting member 10 .

[0073] With this arrangement, the construction workers on both sides of the beam body 1 can quickly and conveniently push the handles on both sides of the fastening member 10 to slide the fastening member 10, so as to efficiently and labor-savingly perform the centering line drawing on the bottom of the beam.

[0074] In a second aspect, a beam bottom centering method is provided.

[0075] A method for using a beam bottom centering device, comprising:

[0076] S1, slidingly abutting against the abutting member 10 on both side walls of the beam body 1;

[0077] S2, controlling the pull rope 20 to connect the two abutting members 10 at the bottom surface side of the beam body 1, and making the pull rope 20 parallel to the bottom surface of the beam body 1 while making the marking member 30 abut against the bottom surface of the beam body 1;

[0078] S3. The abutting members 10 on both sides of the sliding beam body 1 are used to mark the bottom surface of the beam body 1 with the marking member 30 to obtain the center line of the beam bottom.

[0079] Optionally, the beam body 1 may be an orthogonal beam body with two side walls of the same length, an oblique beam body with two side walls of inconsistent length, or an irregular beam body with a continuously changing width.

[0080] When the two fastening members 10 are connected by a drawstring 20 with an elastic telescopic member, the two do not need to slide synchronously. Even if there is a relative speed or the distance between the two is constantly changing, the drawstring 20 between the fastening members 10 can be kept at the midpoint of the drawstring 20 under the action of the elastic telescopic member. The marking member 30 is still at the midpoint between the two fastening members 10, that is, the midpoint in the width direction of the bottom surface of the beam body 1. The marking member 30 will always mark the center of the bottom surface of the beam body 1. Furthermore, the construction convenience for construction personnel is greatly improved. At the same time, when marking the center of the bottom surface of the oblique beam or irregular beam body, the two fastening members 10 can be independently moved from one end of the side wall of the beam body 1 to the other end, and the marking of the center of the bottom surface of the oblique beam or irregular beam body can be successfully completed, which has a very significant practical significance.

[0081] Optionally, the side walls on both sides of the beam body 1 are slidably abutted against one of the abutting members 10 , so that the side wall abutment portion 100 is closely abutted against the side wall of the beam body 1 , and the bottom plate abutment portion 101 is parallel and closely abutted against the bottom surface of the beam body 1 .

[0082] In this way, the side wall fitting part 100 and the bottom plate fitting part 101 form an angle with the help of the rotating part to abut against the chamfered structure connecting the side wall and the bottom surface of the beam body 1. With the cooperation of the clamping parts 10 on both sides of the beam body 1, the edge position of the bottom surface of the beam body 1 can be effectively determined, thereby ensuring that the marking part 30 between the clamping parts 10 on both sides can be accurately located at the midpoint of the width direction of the bottom surface of the beam body 1, thereby avoiding the problem that when the rope body is pulled, the specific position of the edges on both sides of the bottom surface cannot be accurately determined due to the chamfered structure between the side wall and the bottom surface of the beam body 1, and the marking part 30 cannot be accurately located at the midpoint of the width direction of the bottom surface of the beam body 1, thereby ensuring the accuracy of the centering line on the bottom surface of the beam body 1.

[0083] In the description of the present application, it should be noted that the terms "upper", "lower", etc. 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, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0084] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0085] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A beam bottom centering device, characterized in that: The beam bottom is an oblique beam body with inconsistent lengths of two side walls or an irregular beam body with continuously changing width, which includes: At least one pair of abutting members (10), the abutting members (10) being used for slidingly abutting against the side walls of the beam body (1); A pull rope (20), two ends of which are respectively used to connect with the abutment members (10) on both sides of the beam body (1) so as to pass over the beam body (1) in a direction parallel to the bottom surface of the beam body (1); A marking member (30) connected to the midpoint of the pull rope (20) for contacting the beam body (1) and marking the beam body (1); The pull rope (20) comprises: At least two elastic telescopic parts, the two elastic telescopic parts are symmetrically arranged on both sides of the marking part (30) to passively cooperate with the change in the distance between the marking part (30) and the abutting parts (10) on both sides, and to keep the length of the rope body of the pull rope (20) on both sides of the marking part (30) consistent at all times; The abutting member (10) comprises: A side wall abutment portion (100) used for slidingly abutting against the side wall of the beam body (1); A bottom plate abutment portion (101) is used to abut against the bottom surface of the beam body (1) in parallel, and the end of the pull rope (20) is fixedly connected to the bottom plate abutment portion (101), and The side wall fitting portion (100) and the bottom plate fitting portion (101) are connected via a rotating member and are movably arranged with an adjustable angle between them; The rotating part is a hinge (102) having leaf swings on both sides, and a fastening bolt (1020) is provided at the rotating shaft thereof, and the fastening bolt (1020) is used to fix the leaf swings on both sides of the hinge (102) for rotational cooperation.

2. The beam bottom centering device according to claim 1, characterized in that: The elastic telescopic member is a spring (200) whose two ends are respectively connected to the abutting member (10) and the marking member (30).

3. The beam bottom centering device according to claim 1, characterized in that: The marking member (30) comprises: A fixing block (300) connected to the pull rope (20); A marking pen (301) is arranged on one side of the fixing block (300) and is used for contacting and marking the bottom surface of the beam body (1).

4. The beam bottom centering device according to claim 1, characterized in that: An operating handle (103) is provided on one side of the abutting member (10).

5. A beam bottom centering method based on the beam bottom centering device according to claim 1, characterized in that: It includes: The side walls on both sides of the beam body (1) are slidably abutted against a clamping member (10); Controlling the pull rope (20) to connect the two abutting members (10) on the bottom surface side of the beam body (1), and making the pull rope (20) parallel to the bottom surface of the beam body (1) while making the marking member (30) abut against the bottom surface of the beam body (1); The abutting members (10) on both sides of the sliding beam body (1) are used to mark the bottom surface of the beam body (1) with the marking member (30) to obtain the center line of the beam bottom.

6. The beam bottom centering method according to claim 5, characterized in that: The side walls on both sides of the beam body (1) are slidably abutted against a fastening member (10), so that the side wall abutment portion (100) is closely abutted against the side wall of the beam body (1), and the bottom plate abutment portion (101) is parallel and closely abutted against the bottom surface of the beam body (1).

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