90-degree steel wire rope connector pressing production process

Abstract

The invention relates to the technical field of steel wire rope pressing, in particular to a 90-degree steel wire rope joint pressing production process which comprises the following steps: step 1, measuring the blanking length of a steel wire rope and scribing; secondly, binding the two ends of the blanked steel wire rope at the positions 295-300 mm away from the ends through galvanized iron wires with the diameter phi being 1.2; 3, measuring the diameter of the steel wire rope at the pressing end; 4, a joint with a proper inner hole is selected; fifthly, the ZLS connector is placed in a heating furnace at the temperature of 200 DEG C to be preheated for 3 h and then taken out; 6, the connector is screwed into the cleaned steel wire rope; seventhly, the connector is placed in a mold, and a pressing machine is used for driving the mold to conduct pressing; and 8, after the connector is pressed, the binding iron wire at the pressed opening needs to be removed. According to the 90-degree steel wire rope connector pressing production process, a repeated 90-degree rolling pressing method is adopted, so that the pressed steel connector can be effectively combined with the steel wire rope, the steel wire rope is pressed to be minimum, and the pressing quality of the steel wire rope is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of steel wire rope pressing, and in particular to a 90-degree steel wire rope joint pressing production process. Background Art

[0002] Steel joint pressing is a rigging pressing method used to press a steel joint at one end of a wire rope. Since the metal crimping process does not require the use of connectors such as screws and rivets, nor does it require the use of materials such as solder and adhesives, it is widely used in various industrial fields, such as sling tools, etc. This rigging is mainly used for connection. ‌‌

[0003] The aluminum casing must be pressed once, and the steel wire rope in the middle of the casing is easily crushed. In addition, the pressed rigging can only be connected with open joints. If the two ends are connected, a fixed steel plate must be added in the middle. Since it is pressed once, in the process of using the forming mold to press the rigging joint, the forming mold is closed in a single direction relative to the rigging, so that the residual stress generated after pressing only exists in a single direction. Therefore, a 90-degree steel wire rope joint pressing production process is needed to solve the above problems. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a 90-degree wire rope joint pressing production process, aiming to solve the problems mentioned in the background technology.

[0005] The embodiment of the present invention is implemented as follows: a 90-degree wire rope joint pressing production process includes the following steps: Step 1: measure the cutting length of the wire rope and mark it, tie it with 1.2mm thin iron wire at 10mm on both sides of the mark for about 8cm, tie it again for about 8cm after 10cm from the previous binding end, tie it again for about 8cm after 10cm, and then cut it along the mark with a grinding wheel saw; Step 2: use φ1.2 galvanized iron wire to start tying the two ends of the wire rope after cutting at a position 295~300mm away from the end, and the tying length is at least 60mm; Step 3: measure the diameter of the wire rope at the pressing end (measure 3 points in each direction and take the average value); Step 4: select a joint with a suitable inner hole, the hole diameter differs from the wire rope diameter by +1.0mm to +1.2mm, and the inner hole of the joint should be wiped clean with a clean cloth; Step 5: Place the ZLS joint in a 200℃ heating furnace and preheat it for 3 hours and take it out; Step 6: Screw the joint into the cleaning The screwing depth shall not be less than 295mm on the wire rope after that; Step seven: Put the joint into the mold and use the press to drive the mold for pressing. The flat position of the joint should be horizontal, press once with a pressure of 45MPa, and then rotate the joint 90° (the rotation direction is required to be consistent with the twist direction of the wire rope), press once with a pressure of 45MPa, and then rotate the joint 90° according to the twist direction of the wire rope each time. The pressures are set to 45MPa, 45MPa, 48MPa, 50MPa, 55MPa, 56MPa, 60MPa, 60MPa, 65MPa, 65MPa, and press 10 times in total to ensure that the time from taking the steel joint out of the heating furnace to completing 10 pressings does not exceed 20 minutes. After pressing, check the diameter after pressing, measure the diameters of the front, middle and back points in two perpendicular directions, and the average diameter should be controlled at 74-75.5mm; Step eight: After the joint is pressed, remove the wire tied at the pressing mouth.

[0006] Preferably, the tonnage of the press is 4500 tons, and the model of the heating furnace is FG225.

[0007] Preferably, the out-of-roundness requirement of the steel wire rope is: ≤0.90 mm (out-of-roundness requirement: the difference between the maximum and minimum values ​​of the measured values ​​at 0 degrees and 90 degrees of the same cross section is the out-of-roundness of the steel wire rope diameter).

[0008] The 90-degree wire rope joint pressing production process provided by the present invention adopts a multiple 90-degree rolling pressing method, so that the pressed steel joint can be effectively combined with the wire rope, the wire rope is minimized from being crushed, the pressing quality of the wire rope is ensured, and after being pressed at both ends of the wire rope, the special connection requirements of the user can be effectively met; through the drawing design of the steel joint, the connection size and shape can be designed according to the specific requirements of the user; the steel joint pressing process is determined to ensure the pressed connection between the wire rope and the steel joint, and the best assembly point of the wire rope and the steel joint is found through experiments, and the gap between the wire rope diameter and the steel joint aperture is determined to ensure that the wire rope and the steel joint do not slip under the working tension and the tension reaches the expected standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 Schematic diagram of the joint and wire rope in the 90-degree wire rope joint pressing production process. DETAILED DESCRIPTION

[0010] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not limit the present invention.

[0011] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0012] In order to meet the needs of equipment matching and the user's requirements for connecting both open and closed joints, a high-strength steel joint is designed and produced. When the steel joint and the wire rope are connected and pressed, the same method as aluminum pressing is generally used to directly press them to the required size at one time. The rolling pressing method of rotating 90 degrees multiple times is adopted, so that the pressed steel joint can be effectively combined with the wire rope, the wire rope is minimized, the pressing quality of the wire rope is ensured, and after pressing at both ends of the wire rope, it can effectively meet the user's special connection requirements.

[0013] Through the drawing design of steel joints, the connection size and shape are designed according to the specific requirements of the user.

[0014] The pressing process of the steel joint is determined. In order to ensure the pressed connection between the wire rope and the steel joint, the best assembly point of the wire rope and the steel joint is found through experiments, and the gap between the wire rope diameter and the steel joint aperture is determined to ensure that the wire rope and the steel joint do not slip under the working tension.

[0015] Machinery and equipment required for pressing:

[0016] (1) One 4,500-ton special press;

[0017] (2) A pair of high-strength special die base and die;

[0018] (3) One vernier caliper and one wide-mouth vernier caliper;

[0019] (4) One FG225 heating furnace.

[0020] Requirements for wire ropes: Technical requirements for wire rope out-of-roundness: ≤0.90mm; Out-of-roundness requirements: The difference between the maximum and minimum values ​​of the 0-degree and 90-degree measurement values ​​of the same section is the out-of-roundness of the wire rope diameter.

[0021] See also Figure 1 The embodiment of the present invention provides a 90-degree wire rope joint pressing production process, and the 90-degree wire rope joint pressing production process includes the following steps:

[0022] Step 1: Measure the cutting length of the wire rope and mark it. Use 1.2mm thin wire to tie about 8cm long at 10mm on both sides of the mark. Tie about 8cm long 10cm away from the previous binding end. Tie about 8cm long again 10cm away from the previous binding end. Then tie about 8cm long again, and then cut along the mark with a grinding wheel saw.

[0023] Step 2: Use φ1.2 galvanized iron wire to tie the two ends of the wire rope 295~300mm away from the end, and the tying length should be at least 60mm.

[0024] Step 3: Measure the diameter of the wire rope at the pressing end (measure 3 points in each direction and take the average value).

[0025] Step 4: Select a connector with a suitable inner hole. The diameter of the hole should differ from the diameter of the wire rope by +1.0mm to +1.2mm. The inner hole of the connector should be wiped clean with a clean cloth.

[0026] Step 5: Place the ZLS joint in a 200°C heating furnace and preheat for 3 hours, then take it out.

[0027] Step 6: Screw the connector into the cleaned wire rope. The screwing depth must not be less than 295mm.

[0028] Step 7: Put the joint into the mold and use the press to drive the mold for pressing. The flat position of the joint should be placed horizontally; press once with a pressure of 45MPa, then rotate the joint 90° (the rotation direction is required to be consistent with the twist direction of the wire rope), and press once with a pressure of 45MPa; then rotate the joint 90° according to the twist direction of the wire rope each time, and set the pressure to 45MPa, 45MPa, 48MPa, 50MPa, 55MPa, 56MPa, 60MPa, 60MPa, 65MPa, 65MPa, and press 10 times in total, ensuring that the time taken from taking the steel joint out of the heating furnace to completing 10 pressings does not exceed 20 minutes. After pressing, check the diameter after pressing, measure the diameters of the front, middle and back points in two perpendicular directions, and the average diameter should be controlled at 74-75.5mm.

[0029] Step 8: After the joint is pressed, remove the wire tied at the pressed mouth.

[0030] Note: When pressing the joint, be careful to handle it with care and do not allow any scratches to occur.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A 90-degree wire rope joint pressing production process, characterized in that: The following steps are involved: Step 1: Measure the length of the wire rope and mark it. Use 1.2mm thin wire to tie about 8cm long at 10mm on both sides of the mark. Tie about 8cm long after 10cm from the previous tie end. Tie about 8cm long after 10cm. Then use a grinding wheel saw to cut along the mark. Step 2: Use φ1.2 galvanized iron wire to tie the two ends of the wire rope 295~300mm away from the end, and the tying length should be at least 60mm; Step 3: Measure the diameter of the wire rope at the pressing end (measure 3 points in each direction and take the average value); Step 4: Select a connector with a suitable inner hole. The diameter of the hole should be +1.0mm to +1.2mm different from the diameter of the wire rope. The inner hole of the connector should be wiped clean with a clean cloth. Step 5: Place the ZLS joint in a 200°C heating furnace for preheating for 3 hours and then take it out; Step 6: Screw the connector into the cleaned wire rope to a depth of no less than 295mm; Step 7: Put the joint into the mold and use the press to drive the mold for pressing. The flat position of the joint should be horizontal. Press once with a pressure of 45MPa, then rotate the joint 90° (the rotation direction is required to be consistent with the twist direction of the wire rope), press once with a pressure of 45MPa, and then rotate the joint 90° according to the twist direction of the wire rope each time. The pressures are set to 45MPa, 45MPa, 48MPa, 50MPa, 55MPa, 56MPa, 60MPa, 60MPa, 65MPa, 65MPa, and press 10 times in total to ensure that the time from taking the steel joint out of the heating furnace to completing 10 pressings does not exceed 20 minutes. After pressing, check the diameter after pressing, and measure the diameters of the front, middle and back points in two perpendicular directions. The average diameter should be controlled at 74-75.5mm; Step 8: After the joint is pressed, remove the wire tied at the pressed mouth.

2. The 90-degree wire rope joint pressing production process according to claim 1 is characterized in that: The tonnage of the press is 4,500 tons, and the model of the heating furnace is FG225.

3. The 90-degree wire rope joint pressing production process according to claim 1 is characterized in that: The out-of-roundness requirement of the wire rope is: ≤0.90mm (out-of-roundness requirement: the difference between the maximum and minimum values ​​of the 0 degree and 90 degree measurement values ​​of the same section is the out-of-roundness of the wire rope diameter).

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