Take-up device for prestressed steel strand

Abstract

The utility model belongs to the technical field of steel strand take-up, and particularly relates to a take-up device for prestressed steel strands, which comprises a base, mounting plates are fixedly connected to the upper surface of the base, a tightening mechanism is mounted between the opposite surfaces of two adjacent mounting plates, and the tightening mechanism comprises an ejector rod. The lower surface of the ejector rod is fixedly connected with an insertion rod. According to the take-up device for the prestressed steel strand, the tightening mechanism is installed on the upper surface of the base, a conveying wheel in the tightening mechanism is used for pressing and bending the steel strand, and the conveying wheel is movably installed while the steel strand is tightened, so that the pressing depth of the conveying wheel on the steel strand can be adjusted; and the pushing force borne by the ejector rod is detected through the pressure sensor, so that the force of the steel strand for lifting the ejector rod through the conveying wheel, the force of the pushing spring for lifting the ejector rod and the force of the electromagnet for attracting the ejector rod through the metal disc are balanced, and then the tightening degree of the steel strand is automatically adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of steel strand wire drawing, in particular to a wire drawing device for prestressed steel strands. Background Art

[0002] A wire drawing device for prestressed steel strands (application number: 202321256487.0) disclosed on the Chinese patent website, although it solves the technical problems that when the existing winding device winds the steel strands, the steel strands are prone to looseness and other phenomena, and when the existing winding device winds, it lacks a wire arranging function, resulting in the steel strands being easily piled up together during winding and easily causing chaos, still has the following problems:

[0003] During actual use, the actual tension degree of the steel strand during wire drawing will change. The steel strand may become loose or may be overly tensioned, resulting in the need to adjust the tension degree of the steel strand in real time. Since the existing tensioning structure is preset and fixed, it is necessary to frequently adjust manually during later use, and since it is not convenient to detect the tension degree, it is easy to cause untimely adjustment timing, thus making it inconvenient to use. Summary of the Utility Model

[0004] Based on the existing technical problems, the utility model provides a wire drawing device for prestressed steel strands.

[0005] A wire drawing device for prestressed steel strands provided by the utility model includes a base. A mounting plate is fixedly connected to the upper surface of the base. A tensioning mechanism is installed between the opposite surfaces of two adjacent mounting plates. The tensioning mechanism includes a top rod. A plug rod is fixedly connected to the lower surface of the top rod. A pressure sensor is fixedly connected to the upper surface of the plug rod. The upper surface of the pressure sensor contacts the inner bottom wall of the top rod. The lower end of the plug rod is slidably sleeved with a sleeve. A limiting groove is formed in the inner wall of the sleeve. A metal disk is fixedly connected to the lower surface of the plug rod. The metal disk is located in the limiting groove. An electromagnet is fixedly connected to the inner side wall at the lower end of the sleeve.

[0006] Preferably, a thrust spring is slidably sleeved on the outer surface of the sleeve and the outer surface of the plug rod. The thrust spring is located between the top rod and the base. The lower surface of the sleeve is fixedly connected to the upper surface of the base.

[0007] Through the above technical solution, the plug rod and the top rod are jacked up by the thrust spring, so as to facilitate pushing the conveying wheel to lift upward.

[0008] Preferably, a movable groove is formed on the side wall surface at the upper end of the mounting plate. A limiting rod is slidably connected to the inner wall of the movable groove. The upper ends of two adjacent limiting rods are rotatably connected to a conveying wheel through a rotating shaft.

[0009] With the above technical solution, the steel strand passes through the lower surface of the conveying wheel, facilitating the downward bending of the steel strand by the conveying wheel.

[0010] Preferably, the lower side wall surface of the limiting rod is fixedly connected to one end surface of the ejector rod, and a control chassis is fixedly connected to the side wall surface of one of the mounting plates. The control unit of the control chassis is signal-connected to the electromagnet and the tension sensor.

[0011] With the above technical solution, programming is carried out through the PLC in the control chassis, facilitating the control of the operation of the electromagnet and the tension sensor.

[0012] Preferably, auxiliary wheels are installed on the upper surface of the base through the mounting plates, and two adjacent auxiliary wheels are respectively located at both ends of the conveying wheel.

[0013] With the above technical solution, the heights of the two auxiliary wheels are higher than that of the conveying wheel, facilitating the bending of the steel strand into a V shape by the two auxiliary wheels and one conveying wheel.

[0014] Preferably, a wire-receiving seat is fixedly connected to the upper surface of the base, and a wire-receiving roller is rotatably connected to the inner side wall of the wire-receiving seat.

[0015] The beneficial effects in the present utility model are as follows:

[0016] By installing a tensioning mechanism on the upper surface of the base, the conveying wheel in the tensioning mechanism presses down and bends the steel strand. While tensioning the steel strand, by movably installing the conveying wheel, the downward pressing depth of the conveying wheel on the steel strand can be adjusted, and the thrust received by the ejector rod is detected through the pressure sensor, enabling the forces of the steel strand lifting the ejector rod through the conveying wheel, the force of the thrust spring lifting the ejector rod, and the force of the electromagnet attracting the ejector rod through the metal disc to be balanced, thereby realizing the automatic adjustment of the tensioning degree of the steel strand. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of a wire-receiving device for prestressed steel strands proposed by the present utility model;

[0018] Figure 2 It is a three-dimensional view of the conveying wheel structure of a wire-receiving device for prestressed steel strands proposed by the present utility model;

[0019] Figure 3 It is a cross-sectional view of the sleeve structure of a wire-receiving device for prestressed steel strands proposed by the present utility model.

[0020] In the figure: 1. base; 2. mounting plate; 3. push rod; 31. plug rod; 32. pressure sensor; 33. sleeve; 34. metal disk; 35. electromagnet; 36. thrust spring; 37. limit rod; 38. conveying wheel; 39. control chassis; 4. auxiliary wheel; 5. take-up seat; 6. take-up roller. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figures 1 - 3 A wire-taking device for prestressed steel strands comprises a base 1, a mounting plate 2 is fixedly connected to the upper surface of the base 1, a tensioning mechanism is installed between the relative surfaces of two adjacent mounting plates 2, the tensioning mechanism comprises a push rod 3, a plug rod 31 is fixedly connected to the lower surface of the push rod 3, a pressure sensor 32 is fixedly connected to the upper surface of the plug rod 31, the mountain surface of the pressure sensor 32 contacts the inner bottom wall of the push rod 3, a sleeve 33 is slidably sleeved on the lower end of the plug rod 31, a limiting groove is provided on the inner wall of the sleeve 33, a metal disk 34 is fixedly connected to the lower surface of the plug rod 31, the metal disk 34 is located in the limiting groove, and an electromagnet 35 is fixedly connected to the inner side wall of the lower end of the sleeve 33.

[0023] In order to achieve automatic adjustment of the tension, thrust springs 36 are slidably sleeved on the outer surfaces of the sleeve 33 and the outer surfaces of the insertion rod 31. The thrust spring 36 is located between the top rod 3 and the base 1. The lower surface of the sleeve 33 is fixedly connected to the upper surface of the base 1. The thrust spring 36 is used to lift the insertion rod 31 and the top rod 3 upward, thereby facilitating the upward lifting of the conveying wheel 38. A movable groove is provided on the upper side wall surface of the mounting plate 2. The inner wall of the movable groove is slidably connected to the limit rod 37. The upper ends of the two adjacent limit rods 37 are relatively rotated. The shaft is rotatably connected to a conveying wheel 38, and the steel strand passes through the lower end surface of the conveying wheel 38, so that the conveying wheel 38 can bend the steel strand downward. The lower end side wall surface of the limit rod 37 is fixedly connected to one end surface of the top rod 3, and the side wall surface of one mounting plate 2 is fixedly connected to a control box 39. The control unit of the control box 39 is connected to the electromagnet 35 and the tension sensor for signal connection, and programming is performed through the PLC in the control box 39, so as to facilitate the control of the operation of the electromagnet 35 and the tension sensor.

[0024] By installing a tensioning mechanism on the upper surface of the base 1, the steel strand is pressed and bent by the conveying wheel 38 in the tensioning mechanism. While tensioning the steel strand, by movably installing the conveying wheel 38, the pressing depth of the conveying wheel 38 on the steel strand can be adjusted, and the pressure sensor 32 is used to detect the thrust received by the ejector rod 3, so that the force of the steel strand lifting the ejector rod 3 through the conveying wheel 38, the force of the thrust spring 36 lifting the ejector rod 3, and the force of the electromagnet 35 attracting the ejector rod 3 through the metal disc 34 are balanced, thereby realizing the automatic adjustment of the tensioning degree of the steel strand.

[0025] An auxiliary wheel 4 is installed on the upper surface of the base 1 through a mounting plate 2, and two adjacent auxiliary wheels 4 are respectively located at both ends of the conveying wheel 38. The height of the two auxiliary wheels 4 is higher than that of the conveying wheel 38, so as to facilitate bending the steel strand into a V shape by the two auxiliary wheels 4 and one conveying wheel 38. A wire take-up seat 5 is fixedly connected to the upper surface of the base 1, and a wire take-up roller 6 is rotatably connected to the inner side wall of the wire take-up seat 5.

[0026] Working principle:

[0027] During use, the steel strand passes through the upper ends of the two auxiliary wheels 4 and the lower end of the conveying wheel 38, so that the steel strand is bent into a V shape, and one end is fixed to the surface of the wire take-up roller 6;

[0028] Program the PLC in the control chassis 39. The force of the steel strand lifting the ejector rod 3 through the conveying wheel 38, the force of the thrust spring 36 lifting the ejector rod 3, and the force of the electromagnet 35 attracting the ejector rod 3 through the metal disc 34 are balanced, and these forces are transmitted to the pressure sensor 32 through the ejector rod 3;

[0029] After the steel strand becomes loose, the force of the steel strand lifting the ejector rod 3 through the conveying wheel 38 decreases. The control chassis 39 increases the voltage of the electromagnet 35, the magnetic force of the electromagnet 35 increases, the metal disc 34 drives the ejector rod 3 downward through the insertion rod 31, the thrust spring 36 is compressed, and the limiting rod 37 drives the conveying wheel 38 to descend to keep in connection with the steel strand and re-tighten the steel strand;

[0030] When the steel strand is over-tightened, the force of the steel strand lifting the ejector rod 3 through the conveying wheel 38 increases. The control chassis 39 reduces the voltage of the electromagnet 35, the magnetic force of the electromagnet 35 decreases, the thrust spring 36 pushes the ejector rod 3 upward, the ejector rod 3 drives the insertion rod 31 upward, and the limiting rod 37 drives the conveying wheel 38 to rise to keep in connection with the steel strand and adjust the tensioning degree of the steel strand.

[0031] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A wire coiling device for prestressed steel strands, comprising a base (1), characterized in that: The upper surface of the base (1) is fixedly connected with a mounting plate (2). A tensioning mechanism is installed between the opposite surfaces of two adjacent mounting plates (2). The tensioning mechanism includes a top rod (3). The lower surface of the top rod (3) is fixedly connected with a plug rod (31). The upper surface of the plug rod (31) is fixedly connected with a pressure sensor (32). The mountain surface of the pressure sensor (32) is in contact with the inner bottom wall of the top rod (3). The lower end of the plug rod (31) is slidably sleeved with a sleeve (33). The inner wall of the sleeve (33) is provided with a limiting groove. The lower surface of the plug rod (31) is fixedly connected with a metal disc (34). The metal disc (34) is located in the limiting groove. The inner side wall of the lower end of the sleeve (33) is fixedly connected with an electromagnet (35).

2. The wire take-up device for prestressed steel strands according to claim 1, characterized in that: A thrust spring (36) is slidably sleeved on the outer surface of the sleeve (33) and the outer surface of the plug rod (31). The thrust spring (36) is located between the top rod (3) and the base (1). The lower surface of the sleeve (33) is fixedly connected with the upper surface of the base (1).

3. The wire take-up device for prestressed steel strands according to claim 2, wherein: An activity groove is formed on the side wall surface of the upper end of the mounting plate (2). A limiting rod (37) is slidably connected to the inner wall of the activity groove. The upper ends of two adjacent limiting rods (37) are rotatably connected with a conveying wheel (38) through a rotating shaft respectively.

4. A wire take-up device for prestressed steel strands according to claim 3, characterized in that: The side wall surface of the lower end of the limiting rod (37) is fixedly connected with one end surface of the top rod (3). A control chassis (39) is fixedly connected to the side wall surface of one of the mounting plates (2). The control unit of the control chassis (39) is in signal connection with the electromagnet (35) and the tension sensor.

5. The wire take-up device for prestressed steel strands according to claim 4, characterized in that: An auxiliary wheel (4) is installed on the upper surface of the base (1) through the mounting plate (2). Two adjacent auxiliary wheels (4) are respectively located at both ends of the conveying wheel (38).

6. The wire take-up device for prestressed steel strands according to claim 1, characterized in that: A wire winding base (5) is fixedly connected to the upper surface of the base (1). A wire winding roller (6) is rotatably connected to the inner side wall of the wire winding base (5).

Images