Line drawing tool for prefabricated column

Abstract

The utility model relates to the technical field of prefabricated column assembly, in particular to a line drawing tool for a prefabricated column. Comprising a plunger rod which is used for being plugged into a sleeve at the bottom end of a prefabricated column. A stopping device is arranged at one end of the plunger rod and fixedly connected with the plunger rod, and the face, close to the plunger rod, of the stopping device abuts against the bottom end of the prefabricated column. The side, away from the plunger rod, of the stopping device is fixedly connected with a sliding shaft, and the central axis of the sliding shaft is perpendicular to the central axis of the plunger rod. The line drawing ruler is parallel to the central axis of the plunger rod and extends towards the side away from the stopping device. Therefore, the central axis of the prefabricated column sleeve is projected to the side wall of the prefabricated column, in the falling process of the prefabricated column, the sleeve at the bottom end of the prefabricated column can be accurately inserted into the reserved reinforcing steel bar only by vertically intersecting the axis projection line of the sleeve on the side wall of the prefabricated column with the axis connecting line of the reserved reinforcing steel bar, installation is rapid and efficient, and the labor cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated column assembly, in particular to a prefabricated column marking tool. Background Art

[0002] Precast concrete columns (referred to as precast columns) refer to concrete columns prefabricated in precast factories according to design parameters and specifications. Precast columns are factory-produced and transported to the site for on-site assembly to improve the construction process. Usually, the top of the installation foundation, such as the floor slab, is reserved with longitudinal dowels, and the precast column is pre-buried with a sleeve at its bottom during prefabrication. During on-site installation, after the precast column is hoisted above the floor slab, at least one observer is usually required to hold a small mirror, so that the small mirror is located between the precast column and the floor slab, and the mirror surface of the small mirror is facing upward to the sleeve at the bottom of the precast column. The observer observes the sleeve in the mirror surface and directs other staff who support the precast column to continuously adjust the position of the precast column until the sleeve at the bottom of the precast column is aligned and coaxial with the longitudinal dowel corresponding to the top of the floor slab. Only in this way can the sleeve at the bottom of the precast column be inserted into the longitudinal dowel at the top of the floor slab to achieve the connection between the precast column and the floor slab. The labor cost is high, the labor intensity is high, and the work efficiency is low. Utility Model Content

[0003] The utility model aims to provide a prefabricated column marking tool which is convenient for quick assembly of prefabricated columns.

[0004] To achieve the above-mentioned purpose, the utility model provides a prefabricated column marking tool, comprising a plunger rod, the plunger rod being used to be inserted into a sleeve at the bottom end of the prefabricated column; a stop device is provided at one end of the plunger rod, the stop device is fixedly connected to the plunger rod, and a side of the stop device close to the plunger rod is used to abut against the bottom end of the prefabricated column; a sliding shaft is fixedly connected to a side of the stop device away from the plunger rod, the central axis of the sliding shaft is perpendicular to the central axis of the plunger rod, and the sliding shaft extends to a side away from the plunger rod; a marking ruler is sleeved on one end of the sliding shaft away from the stop device, the side of the marking ruler in the length direction is parallel to the central axis of the plunger rod, and the marking ruler extends to a side away from the stop device.

[0005] Optionally, a connecting plate is further included, one end of which is fixedly connected to the stop device, and the other end of the connecting plate is fixedly connected to the end of the sliding shaft away from the marking ruler.

[0006] Optionally, the connecting plate is a rectangular structure.

[0007] Optionally, on a side away from the stop device, the width of the rectangular structure is equal to the width of the marking ruler.

[0008] Optionally, a vertex of the rectangular structure coincides with a center point of a side of the stop device close to the connecting plate.

[0009] Optionally, the marking ruler is an L-shaped structure.

[0010] Optionally, a plurality of sliding slots are provided on the sliding shaft.

[0011] Optionally, the stop device is detachably connected to the plunger rod.

[0012] Optionally, a stud is formed on one side of the stop device close to the plunger rod, a threaded hole is formed on one side of the plunger rod close to the stop device, and the stop device is threadedly connected to the plunger rod through the stud.

[0013] Optionally, the stud is arranged at the center of the stop device, and the central axis of the stud is colinear with the central axis of the plunger rod.

[0014] Compared with the prior art, the technical solution provided by the utility model has the following advantages:

[0015] The prefabricated column marking tool provided by the utility model is achieved by inserting a plunger rod into a sleeve at the bottom end of the prefabricated column and fixing it on the prefabricated column through a stop device. Then, a sliding shaft is fixedly connected to the side of the stop device away from the plunger rod, and the central axis of the sliding shaft is perpendicular to the central axis of the plunger rod, and a marking ruler is sleeved on the end of the sliding shaft away from the stop device, and the side of the marking ruler in the length direction is parallel to the central axis of the plunger rod, and the marking ruler extends to the side away from the stop device. Therefore, when the plunger rod is inserted into the sleeve of the prefabricated column, the marking ruler can be pressed against the outer wall surface of the prefabricated column by sliding the marking ruler, and a brush is used to draw along the marking ruler, so that the central axis of the prefabricated column sleeve can be projected to the side wall of the prefabricated column. Therefore, in the process of installing the precast column, after the axis of the reserved steel bars on the foundation joint surface is laid out, the axis of the reserved steel bars on the side of the precast column is connected. In the process of lowering the precast column, it is only necessary to make the projection line of the sleeve axis of the side wall of the precast column intersect the axis connection line of the reserved steel bars vertically, so that the sleeve at the bottom end of the precast column can be accurately inserted into the reserved steel bars. The installation is fast and efficient, saving labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 It is a front view of the prefabricated column marking tool according to an embodiment of the utility model;

[0019] Figure 2 It is a left view of the prefabricated column marking tool according to an embodiment of the utility model;

[0020] Figure 3 It is a right view of the prefabricated column marking tool according to an embodiment of the utility model;

[0021] Figure 4 It is a first view of the assembly process of the prefabricated column and the joint surface according to the embodiment of the utility model;

[0022] Figure 5 This is a second view of the assembly process of the prefabricated column and the joint surface described in an embodiment of the utility model.

[0023] Among them, 1. plunger rod; 2. stop device; 21. stud; 3. sliding shaft; 4. marking ruler; 5. connecting plate; 6. prefabricated column; 61. sleeve; 611. sleeve center axis; 7. reserved steel bars; 711. reserved steel bar center axis; 8. foundation joint surface. DETAILED DESCRIPTION

[0024] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the scheme of the utility model will be further described below. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] The prefabricated column drawing tool is described in detail below through a specific embodiment:

[0027] like Figures 1 to 3As shown, the utility model provides a prefabricated column 6 marking tool, including a plunger rod 1, which is used to be inserted into a sleeve 61 at the bottom end of the prefabricated column 6; a stop device 2 is provided at one end of the plunger rod 1, and the stop device 2 is fixedly connected to the plunger rod 1, and a side of the stop device 2 close to the plunger rod 1 is used to abut against the bottom end of the prefabricated column 6; a sliding shaft 3 is fixedly connected to the side of the stop device 2 away from the plunger rod 1, and the central axis of the sliding shaft 3 is perpendicular to the central axis of the plunger rod 1, and the sliding shaft 3 extends to the side away from the plunger rod 1; a marking ruler 4 is sleeved on the end of the sliding shaft 3 away from the stop device 2, and the side of the marking ruler 4 in the length direction is parallel to the central axis of the plunger rod 1, and the marking ruler 4 extends to the side away from the stop device 2.

[0028] The plunger rod 1 may be a circular steel structure, which may be specifically set according to the shape of the sleeve 61 at the bottom end of the prefabricated column 6. A plurality of plunger rods 1 of different sizes may be provided to accommodate different sizes of the sleeve 61. The diameter of the plunger rod 1 may be slightly smaller than the inner diameter of the sleeve 61, so as to facilitate the insertion of the plunger rod 1 into the sleeve 61. It is understood that after the plunger rod 1 is inserted into the sleeve 61, the plunger rod 1 may be concentric and coaxial with the sleeve 61. Further, a stopper 2 is provided at one end of the plunger rod 1, and the stopper 2 may be in any shape such as a circle or a rectangle, as long as the side of the stopper 2 close to the plunger rod 1 can abut against the bottom end of the prefabricated column 6. It is understood that the diameter of the stopper 2 is larger than the diameter of the plunger rod 1, so that after the plunger rod 1 is inserted into the sleeve 61, the bottom end of the prefabricated column 6 can abut against the stopper 2. The stopper 2 and the plunger rod 1 may be welded or integrally formed. Furthermore, a sliding shaft 3 is fixedly connected to the side of the stopper 2 away from the plunger rod 1. The sliding shaft 3 and the stopper 2 can be welded or bolted, as long as the sliding shaft 3 and the stopper 2 are relatively fixed. The central axis of the sliding shaft 3 is perpendicular to the central axis of the plunger rod 1, and the sliding shaft 3 extends to the side away from the plunger rod 1. The specific length of the sliding shaft 3 is set according to actual needs. In addition, a marking ruler 4 is sleeved on the end of the sliding shaft 3 away from the stopper 2, so that the marking ruler 4 can slide up and down along the sliding shaft 3 to adapt to the side wall thickness of different prefabricated columns 6, so that the marking ruler 4 is close to the side wall of the prefabricated column 6. The side of the drawing ruler 4 in the length direction is set to be parallel to the central axis of the plunger rod 1, so that the central axis of the sleeve 61 can be accurately projected onto the side wall of the prefabricated column 6. The drawing ruler 4 extends to the side away from the stopper 2, and the length of the drawing ruler 4 can be set according to actual needs. It can be understood that the drawing ruler 4 is a regular rectangle. Therefore, after the plunger rod 1 is inserted into the sleeve 61 at the bottom of the prefabricated column 6, the ruler 4 is slid to make it close to the outer wall of the prefabricated column 6. Since the side edge of the ruler 4 in the length direction is parallel to the central axis of the plunger rod 1, that is, the side edge of the ruler 4 is parallel to the central axis of the sleeve 61. Therefore, the edge line formed by the contact between the ruler 4 and the prefabricated column 6 is the projection of the central axis of the sleeve 61 at the bottom of the prefabricated column 6 on the side wall of the prefabricated column 6. After one projection is completed, the plunger rod 1 is removed and the axis projection of the next sleeve 61 is repeated until all the sleeves 61 on the side of the prefabricated column 6 are projected, forming multiple sleeve 61 axis lines.

[0029] During the assembly process, Figure 4 and Figure 5As shown, the axes of the reserved steel bars 7 on the upper side of the foundation interface 8 of the prefabricated column 6 are first connected to form a plurality of reserved steel bar center axes 711. It is understandable that the plurality of reserved steel bar center axes 711 are in a grid that crosses vertically and horizontally, and the plurality of sleeve center axes 611 are also in a grid that crosses vertically and horizontally. It is understandable that during the falling process of the prefabricated column 6, the prefabricated column 6 and the foundation interface 8 are perpendicular to each other. Therefore, it is only necessary to adjust the position of the prefabricated column 6 so that each sleeve center axis 611 intersects with the corresponding reserved steel bar center axis 711, that is, the sleeve center axis 611 intersects with the corresponding reserved steel bar center axis 711 vertically, and the sleeve 61 on the prefabricated column 6 can be accurately inserted into the reserved steel bar 7, and the installation is fast and efficient, saving labor costs.

[0030] The prefabricated column 6 marking tool provided by the utility model is made by inserting the plunger rod 1 into the sleeve 61 at the bottom end of the prefabricated column 6 and fixing it on the prefabricated column 6 through the stop device 2. Then, a sliding shaft 3 is fixedly connected to the side of the stop device 2 away from the plunger rod 1, and the central axis of the sliding shaft 3 is perpendicular to the central axis of the plunger rod 1, and a marking ruler 4 is sleeved on the end of the sliding shaft 3 away from the stop device 2, and the side of the marking ruler 4 in the length direction is parallel to the central axis of the plunger rod 1, and the marking ruler 4 extends to the side away from the stop device 2. Therefore, when the plunger rod 1 is inserted into the sleeve 61 of the prefabricated column 6, the marking ruler 4 can be pressed against the outer wall surface of the prefabricated column 6 by sliding the marking ruler 4, and a brush is used to draw along the marking ruler 4, so that the central axis of the sleeve 61 can be projected onto the side wall of the prefabricated column 6 to form the central axis 611 of the sleeve. Therefore, in the process of installing the prefabricated column 6, after the axis of the reserved steel bars 7 on the foundation joint surface 8 is laid out, the axis of the reserved steel bars 7 on the surrounding sides of the prefabricated column 6 is connected. In the process of lowering the prefabricated column 6, it is only necessary to make the central axis 611 of the sleeve perpendicular to the corresponding central axis 711 of the reserved steel bars, so that the sleeve 61 at the bottom end of the prefabricated column 6 can be accurately inserted into the reserved steel bars 7. The installation is fast and efficient, saving labor costs.

[0031] Furthermore, the prefabricated column 6 marking tool provided by the utility model also includes a connecting plate 5, one end of the connecting plate 5 is fixedly connected to the stop device 2, and the other end of the connecting plate 5 is fixedly connected to the end of the sliding shaft 3 away from the marking ruler 4.

[0032] The connecting plate 5 and the stop device 2 may be connected by welding or screws, etc. The size of the connecting plate 5 may be greater than or equal to the stop device 2, thereby further enhancing the structural strength of the device.

[0033] In some embodiments, the connecting plate 5 is a rectangular structure. Of course, it can also be a structure of other shapes, as long as the stopper device 2 and the sliding shaft 3 can be fixedly connected.

[0034] Furthermore, on a side away from the stop device 2 , the width of the rectangular structure is equal to the width of the marking ruler 4 .

[0035] On the one hand, this arrangement facilitates processing. On the other hand, when the ruler 4 moves to contact the connecting plate 5, it can ensure that one end of the ruler 4 coincides with the wide side of the rectangular structure, thereby further ensuring the accuracy of the projection.

[0036] Furthermore, Figure 2 As shown, one vertex of the rectangular structure coincides with the center point of a side of the stop device 2 close to the connecting plate 5 .

[0037] That is to say, when the stop device 2 is circular, the part formed by the two adjacent sides of the rectangular structure occupies a quarter of the circle, and the other end of the rectangular structure protrudes from the stop device 2, thereby preventing the prefabricated column 6 from being too large and affecting the sliding of the marking ruler 4.

[0038] In some other embodiments, the marking ruler 4 is an L-shaped structure.

[0039] It can be understood that the long side and the short side of the L-shape are perpendicular to each other, and the sliding shaft 3 is sleeved on the short side of the L-shape.

[0040] Furthermore, a plurality of sliding slots are provided on the sliding shaft 3. The above-mentioned sliding slots can be of any shape, as long as the marking ruler 4 can be fixed by the sliding slots after sliding a certain displacement, so as to prevent the marking ruler from sliding arbitrarily and affecting the drawing.

[0041] In some other embodiments, the stopper device 2 is detachably connected to the plunger rod 1. This arrangement is for replacing plunger rods 1 of different specifications to adapt to sleeves 61 of different sizes, which is convenient and quick. Specifically, the stopper device 2 can be bolted to the plunger rod 1.

[0042] Furthermore, a stud 21 is formed on one side of the stopper 2 close to the plunger rod 1 , and a threaded hole is formed on one side of the plunger rod 1 close to the stopper 2 . The stopper 2 is threadedly connected to the plunger rod 1 via the stud 21 .

[0043] The stud 21 can be integrally formed on one side of the stopper 2, so that the stopper 2 forms a bolt structure. It can be understood that the stud 21 is provided with a thread, and then a threaded hole is correspondingly opened on the plunger rod 1, and the depth of the threaded hole corresponds to the stud 21. Therefore, the stopper 2 can be screwed onto the plunger rod 1 through the cooperation between the stud 21 and the threaded hole.

[0044] Furthermore, the stud 21 is arranged at the center of the stopper 2 , and the central axis of the stud 21 is colinear with the central axis of the plunger rod 1 .

[0045] The stud 21 is arranged at the center of the stopper 2 so that the force is evenly applied when the stopper 2 is screwed onto the plunger rod 1, thereby avoiding local force causing the plunger rod 1 to twist and deform, thereby affecting the accuracy of the projection.

[0046] It should be noted that, in this article, 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 existence of other identical elements in the process, method, article or device including the elements.

[0047] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be obvious 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 invention. Therefore, the present invention will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A prefabricated column marking tool, characterized in that: The invention comprises a plunger rod (1), wherein the plunger rod (1) is used to be inserted into a sleeve (61) at the bottom end of a prefabricated column (6); a stopper (2) is provided at one end of the plunger rod (1), wherein the stopper (2) is fixedly connected to the plunger rod (1), and a side of the stopper (2) close to the plunger rod (1) is used to abut against the bottom end of the prefabricated column (6); a sliding shaft (3) is fixedly connected to the side of the stopper (2) away from the plunger rod (1), wherein the central axis of the sliding shaft (3) is perpendicular to the central axis of the plunger rod (1), and the sliding shaft (3) extends to the side away from the plunger rod (1); a marking ruler (4) is sleeved on the end of the sliding shaft (3) away from the stopper (2), wherein the side of the marking ruler (4) in the length direction is parallel to the central axis of the plunger rod (1), and the marking ruler (4) extends to the side away from the stopper (2).

2. The prefabricated column marking tool according to claim 1, characterized in that: It also comprises a connecting plate (5), one end of which is fixedly connected to the stop device (2), and the other end of which is fixedly connected to the end of the sliding shaft (3) away from the marking ruler (4).

3. The prefabricated column marking tool according to claim 2, characterized in that: The connecting plate (5) is a rectangular structure.

4. The prefabricated column marking tool according to claim 3, characterized in that: On a side away from the stop device (2), the width of the rectangular structure is equal to the width of the marking ruler (4).

5. The prefabricated column marking tool according to claim 3, characterized in that: A vertex of the rectangular structure coincides with a center point of a side of the stop device (2) close to the connecting plate (5).

6. The prefabricated column marking tool according to claim 1, characterized in that: The line drawing ruler (4) is an L-shaped structure.

7. The prefabricated column marking tool according to claim 1, characterized in that: The sliding shaft (3) is provided with a plurality of sliding slots.

8. The prefabricated column marking tool according to claim 1, characterized in that: The stop device (2) is detachably connected to the plunger rod (1).

9. The prefabricated column marking tool according to claim 8, characterized in that: A stud (21) is formed on one side of the stop device (2) close to the plunger rod (1), a threaded hole is formed on one side of the plunger rod (1) close to the stop device (2), and the stop device (2) is threadedly connected to the plunger rod (1) via the stud (21).

10. The prefabricated column marking tool according to claim 9, characterized in that: The stud (21) is arranged at the center of the stopper device (2), and the central axis of the stud (21) is colinear with the central axis of the plunger rod (1).

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