Destressing device for prestressed steel strand

Abstract

The utility model provides a destressing device for a prestressed steel strand. The destressing device for the prestressed steel strand comprises a shell, wherein a stirring mechanism and a heating assembly are arranged on the shell; the stirring mechanism comprises a driving motor, the driving motor is fixedly installed on the shell, the output end of the driving motor is fixedly connected with a bevel gear, one side of the bevel gear is in meshed connection with a driven gear, the driven gear is fixedly connected with a rotating shaft, and the outer wall of the rotating shaft is fixedly connected with a spiral blade. A fixing plate is rotationally mounted at the top end of the rotating shaft, and the bottom end of the fixing plate is fixedly connected with the top end of the shell; the heating assembly comprises a heating cavity, the heating cavity is formed in the shell, a heating device is installed in the shell, and a blocking net is fixedly connected to the inner wall of the shell. The destressing device for the prestressed steel strand has the advantages that salt bath uniform heating treatment can be carried out on the steel strand, and stress is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel strand stress relief, in particular to a prestressed steel strand stress relief device. Background Art

[0002] Prestressed steel strand is a twisted steel cable consisting of 2, 3, 7 or 19 high-strength steel wires, which has been stress-relieved (stabilized) and is suitable for prestressed concrete and similar purposes.

[0003] When an object is deformed due to external factors (force, humidity, temperature field changes, etc.), internal forces that interact with each other are generated between the various parts of the object. The internal force per unit area is called stress.

[0004] After searching, the existing patent (publication number: CN219793064U) discloses a prestressed steel strand stress relief device, which includes a processing box, a mobile frame is arranged in the processing box, a heating component for heating the steel strand and a driving component for driving the displacement of the heating component are arranged in the mobile frame, and the left and right sides of the processing box are provided with limiters for fixing the steel strand. The prestressed steel strand stress relief device passes the steel strand through the processing box, and the limiters on both sides press and fix it, and then the heating tube is energized to preheat the thermal pad, and the first electric push rod fits it with the steel strand, so that the steel strand can be heated. Under the control of the pushing component, the steel strand is quickly heated as a whole. The heat treatment method can release the stress inside the steel strand, so that the stress relief effect is better. The two sides of the steel strand are in a fixed state, so that it is not easy to loosen, and the stress relief treatment of the device is more convenient.

[0005] However, there are still some shortcomings in the above structure. When the prestressed steel strand stress relief device is in use, the steel strand is heated by a thermal pad, which easily leads to uneven heating of the steel strand and reduces the service life of the steel strand.

[0006] Therefore, it is necessary to provide a new prestressed steel strand stress relief device to solve the above technical problems. Utility Model Content

[0007] The technical problem solved by the utility model is to provide a prestressed steel strand stress relief device which can perform uniform salt bath heating treatment on the steel strand and reduce stress.

[0008] In order to solve the above technical problems, the utility model provides a prestressed steel strand stress relief device comprising: a housing, on which a stirring mechanism and a heating component are arranged;

[0009] The stirring mechanism comprises a driving motor, the driving motor is fixedly mounted on the housing, the output end of the driving motor is fixedly connected with a bevel gear, one side of the bevel gear is meshingly connected with a driven gear, a rotating shaft is fixedly connected to the driven gear, the outer wall of the rotating shaft is fixedly connected with a spiral blade, a fixing plate is rotatably mounted on the top of the rotating shaft, and the bottom end of the fixing plate is fixedly connected to the top of the housing;

[0010] The heating component comprises a heating chamber, the heating chamber is opened in the shell, a heating device is installed in the shell, and a blocking net is fixedly connected to the inner wall of the shell.

[0011] As a further solution of the utility model, a steel strand body is slidably connected to the shell, a collecting box is placed below the shell, two covers are fixedly connected to the shell, a salt storage chamber is provided at the top of the shell, and a plunger is clamped at the bottom of the shell.

[0012] As a further solution of the utility model, the shape of the salt storage chamber is that the upper opening size is larger and the lower opening size is smaller, and the size of the barrier net matches the size of the heating chamber.

[0013] As a further solution of the utility model, the rotating shaft is located on the vertical center line of the barrier net, and the rotating shaft is rotatably connected to the outer shell.

[0014] As a further solution of the utility model, the material of the mask is polyphenylene sulfide, and the two masks are respectively located on the outer wall and the inner wall of the shell.

[0015] As a further solution of the utility model, the collection box is located directly below the shell, and the length of the collection box is greater than the length of the shell.

[0016] Compared with the related art, the prestressed steel strand stress relief device provided by the utility model has the following beneficial effects:

[0017] 1. The utility model can heat the salt evenly by setting a stirring mechanism and cooperating with a heating component, and then the heated salt flows into the bottom end of the shell to evenly heat the steel strand body in a salt bath, and can heat the steel wire to a certain temperature and then cool the steel strand body to room temperature, so that the internal stress of the steel strand body is released;

[0018] 2. The utility model is provided with a salt storage chamber, which can accumulate salt in the salt storage chamber and automatically replenish the salt in the outer shell. The setting of the mask can reduce the amount of salt that is carried out when the steel strand body moves. At the same time, the salt can be recycled through the collection box. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of the prestressed steel strand stress relief device provided by the utility model;

[0021] Figure 2 A schematic diagram of the internal structure of the shell of the prestressed steel strand stress relief device provided by the utility model;

[0022] Figure 3 A schematic diagram of the structure of the stirring mechanism of the prestressed steel strand stress relief device provided by the utility model;

[0023] Figure 4 This is a schematic structural diagram of a heating component of a prestressed steel strand stress relief device provided by the utility model.

[0024] In the figure: 1. casing; 2. driving motor; 3. bevel gear; 4. driven gear; 5. rotating shaft; 6. spiral blade; 7. fixing plate; 8. heating chamber; 9. heating device; 10. blocking net; 11. steel strand body; 12. collecting box; 13. shield; 14. salt storage chamber. DETAILED DESCRIPTION

[0025] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 ,in, Figure 1 It is a schematic diagram of the overall structure of the stress relief device for prestressed steel strands of the utility model; Figure 2 This is a schematic diagram of the internal structure of the shell of the prestressed steel strand stress relief device of the utility model; Figure 3 This is a schematic diagram of the stirring mechanism structure of the prestressed steel strand stress relief device of the utility model; Figure 4 The schematic diagram of the heating component structure of the prestressed steel strand stress relief device provided by the utility model. The prestressed steel strand stress relief device comprises: a housing 1, on which a stirring mechanism and a heating component are arranged;

[0026] The stirring mechanism comprises a driving motor 2, the driving motor 2 is fixedly mounted on the housing 1, the output end of the driving motor 2 is fixedly connected with a bevel gear 3, one side of the bevel gear 3 is meshingly connected with a driven gear 4, a rotating shaft 5 is fixedly connected to the driven gear 4, the outer wall of the rotating shaft 5 is fixedly connected with a spiral blade 6, a fixing plate 7 is rotatably mounted on the top of the rotating shaft 5, and the bottom end of the fixing plate 7 is fixedly connected to the top of the housing 1;

[0027] The heating assembly comprises a heating chamber 8 , which is opened in the outer shell 1 , a heating device 9 is installed in the outer shell 1 , and a screen 10 is fixedly connected to the inner wall of the outer shell 1 .

[0028] like Figure 2 As shown, a steel strand body 11 is slidably connected to the shell 1, a collecting box 12 is placed below the shell 1, two shields 13 are fixedly connected to the shell 1, a salt storage chamber 14 is provided at the top of the shell 1, and a plunger is clamped at the bottom of the shell 1;

[0029] The provision of the collecting box 12 is conducive to collecting and utilizing the salt brought out by the steel strand body 11, thereby saving costs.

[0030] like Figure 2 As shown, the shape of the salt storage chamber 14 is that the upper opening size is large and the lower opening size is small, and the size of the barrier 10 matches the size of the heating chamber 8;

[0031] By setting the shape of the salt storage chamber 14 to have a larger opening size at the upper end and a smaller opening size at the lower end, salt can be accumulated in the salt storage chamber 14 to automatically replenish the salt in the housing 1.

[0032] like Figure 3 As shown, the rotating shaft 5 is located on the vertical center line of the barrier 10 , and the rotating shaft 5 is rotatably connected to the housing 1 .

[0033] The arrangement of the rotating shaft 5 on the vertical center line of the screen 10 facilitates the spiral blades 6 to evenly stir the salt in the heating chamber 8 .

[0034] like Figure 2 As shown, the material of the mask 13 is polyphenylene sulfide, and the two masks 13 are respectively located on the outer wall and the inner wall of the housing 1;

[0035] By providing the mask 13, the amount of salt carried out when the steel strand body 11 moves can be reduced.

[0036] like Figure 2 As shown, the collection box 12 is located directly below the housing 1, and the length of the collection box 12 is greater than the length of the housing 1;

[0037] The collecting box 12 is located directly below the outer shell 1 and the length of the collecting box 12 is larger than the length of the outer shell 1, so that the salt can be reduced from being scattered outside.

[0038] The working principle of the prestressed steel strand stress relief device provided by the utility model is as follows:

[0039] The first step: when in use, first place the collecting box 12 directly below the shell 1, then pass the steel strand body 11 through the shell 1, and then pour salt from the salt storage chamber 14 to fill the shell 1, and then use the heating device 9 to heat the salt, and at the same time start the drive motor 2 to drive the bevel gear 3 and the driven gear 4 to rotate, and then drive the rotating shaft 5 and the spiral blade 6 to rotate, and the spiral blade 6 brings the salt from the bottom to the top to cooperate with the heating device 9 for uniform heating. After the salt temperature in the heating chamber 8 reaches the standard, remove the plunger at the bottom of the shell 1, and let the unheated salt at the bottom of the shell 1 flow out, and at the same time let the heated salt on the blocking net 10 flow into the bottom of the shell 1, and then put the plunger back to its original position. At this time, 11 is subjected to uniform salt bath heating treatment in high-temperature salt, which can heat the steel wire to a certain temperature, and then the part of the steel strand body 11 in the shell 1 is pulled out, and the steel strand body 11 is cooled to room temperature, so that the internal stress of the steel strand body 11 is released.

[0040] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above utility model, the details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in this field;

[0041] The standard parts used therein can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0042] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations or direct or indirect applications may be made to these embodiments without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the attached claims and their equivalents, which are equally included in the scope of patent protection of the present invention.

Claims

1. A prestressed steel strand stress relief device, characterized in that: include: A housing, wherein a stirring mechanism and a heating component are disposed on the housing; The stirring mechanism comprises a driving motor, the driving motor is fixedly mounted on the housing, the output end of the driving motor is fixedly connected with a bevel gear, one side of the bevel gear is meshingly connected with a driven gear, a rotating shaft is fixedly connected to the driven gear, the outer wall of the rotating shaft is fixedly connected with a spiral blade, a fixing plate is rotatably mounted on the top of the rotating shaft, and the bottom end of the fixing plate is fixedly connected to the top of the housing; The heating component comprises a heating cavity, which is opened in an outer shell, a heating device is installed in the outer shell, and a blocking net is fixedly connected to the inner wall of the outer shell.

2. The prestressed steel strand stress relief device according to claim 1, characterized in that: A steel strand body is slidably connected to the shell, a collecting box is placed below the shell, two shields are fixedly connected to the shell, a salt storage cavity is arranged at the top of the shell, and a plunger is clamped at the bottom of the shell.

3. The prestressed steel strand stress relief device according to claim 2, characterized in that: The shape of the salt storage chamber is that the upper opening size is large and the lower opening size is small, and the size of the barrier mesh matches the size of the heating chamber.

4. The prestressed steel strand stress relief device according to claim 1, characterized in that: The rotating shaft is located on the vertical center line of the barrier net, and the rotating shaft is rotatably connected to the outer shell.

5. The prestressed steel strand stress relief device according to claim 2, characterized in that: The material of the mask is polyphenylene sulfide, and the two masks are respectively located on the outer wall and the inner wall of the shell.

6. The prestressed steel strand stress relief device according to claim 2, characterized in that: The collection box is located directly below the shell, and the length of the collection box is greater than the length of the shell.

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