Pulley type clamping steel wire rope tensile test detection device and detection method

Abstract

The invention provides a pulley type clamping steel wire rope tensile test detection device and detection method, the device comprises a clamping plate, a conical sleeve, a conical wedge block and a connecting piece, the clamping plate is used for clamping an upper jaw and a lower jaw of a tensile testing machine; the conical sleeve comprises two U-shaped arms located at the upper part and a flat conical pipe body located at the lower part, the flat conical pipe body has a hollow structure with a wide upper part and a narrow lower part, and the interior of the flat conical pipe body is used for accommodating the conical wedge block and a steel wire rope to be subjected to a tensile test; the conical wedge block is a flat conical sheet body and is of a structure with a wide upper part and a narrow lower part, a concave arc surface for mounting the steel wire rope is processed on the side edge of the conical wedge block, and the steel wire rope and the conical wedge block are integrally placed into the flat conical tube body of the conical sleeve from the upper part of the conical sleeve; and the connecting piece penetrates through the through holes in the clamping plate and the two U-shaped arms to connect the clamping plate with the conical sleeve. The problem that the steel wire rope cannot be subjected to a tensile test can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of wire rope detection, and in particular relates to a pulley type clamping wire rope tensile test detection device and a detection method. Background Art

[0002] The wire rope is composed of steel wire, rope core and grease. It is first twisted into strands by multiple layers of steel wire, and then a certain number of strands are twisted into a spiral rope with the rope core as the center. It has a relatively loose structure. In physical and chemical testing, in order to verify the mechanical properties of the wire rope, it is necessary to perform a tensile test on it. However, the jaws of the tensile testing machine are generally flat jaws or V-shaped jaws. During the test, the existing jaws are directly used to clamp the two ends of the wire rope. Due to the loose structure of the wire rope, under the action of the clamping force, when the wire rope is not broken, the clamping parts at both ends have become scattered, and the wire rope is loosened into multiple strands of steel wire, and the tensile test cannot be completed. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] The present invention provides a pulley type clamping wire rope tensile test detection device and a detection method to solve the technical problem that the wire rope cannot be subjected to a tensile test.

[0005] (II) Technical solution

[0006] In order to solve the above technical problems, the present invention proposes a pulley-type clamping wire rope tensile test detection device, which includes a clamping plate, a conical sleeve, a conical wedge and a connecting piece; wherein,

[0007] The clamping plate is used for clamping at the upper and lower jaws of the tensile testing machine, and a through hole is processed on the plate body of the clamping plate; the conical sleeve includes a U-shaped double arm located at the upper part and a flat conical tube body located at the lower part, and the U-shaped double arms are respectively processed with through holes of the same size as the through holes on the clamping plate, and the flat conical tube body has a hollow structure that is wide at the top and narrow at the bottom, and the interior is used to accommodate a conical wedge and a steel wire rope to be subjected to a tensile test; the conical wedge is a flat conical sheet body with a wide upper and narrow lower structure, and the side of the conical wedge is processed with a concave arc surface for installing the steel wire rope, and the steel wire rope and the conical wedge are integrally placed into the flat conical tube body of the conical sleeve from the top of the conical sleeve; the connecting piece penetrates into the through holes on the clamping plate and the U-shaped double arms, and is used to connect the clamping plate with the conical sleeve.

[0008] Furthermore, the clamping plate adopts a rectangular parallelepiped plate body.

[0009] Furthermore, the clamping plate is a metal plate.

[0010] Furthermore, a through hole is processed at the lower position of the metal plate.

[0011] Furthermore, the radius of curvature of the concave arc surface matches the diameter of the steel wire rope to be subjected to the tensile test.

[0012] Furthermore, the connecting part includes a bare bolt and a nut; wherein, the bare bolt passes through the through holes on the clamping plate and the U-shaped double arms to connect the clamping plate and the conical sleeve together, and the nut is installed on the other end of the bare bolt to prevent the clamping plate and the conical sleeve from moving left and right during the test.

[0013] Furthermore, a retaining ring mounting hole is processed at the tail of the bare rod bolt, and the retaining ring is inserted into the retaining ring mounting hole to prevent the nut from falling off.

[0014] In addition, the present invention also proposes a wire rope tensile test detection method, using the above pulley type clamping wire rope tensile test detection device, the detection method is:

[0015] Select a conical wedge with a concave arc surface matching the steel wire rope to be subjected to the tensile test, and wind the steel wire rope to be subjected to the tensile test from one side of the narrow end to the other side along the concave arc surface of the conical wedge. Put the steel wire rope and the conical wedge into the flat conical tube body of the conical sleeve from the top of the conical sleeve as a whole, and complete the clamping of one end of the steel wire rope. Clamp the other end of the steel wire rope in the same way.

[0016] When conducting a tensile test, the two clamping devices are respectively clamped on the upper and lower jaws of the tensile testing machine, and then the equipment is turned on to conduct the tensile test; during the test, under the action of tension, the wire rope drives the conical wedge to move forward inside the conical casing, thereby forming a positive pressure on the side outer peripheral surface of the conical wedge, so that friction self-locking is formed between the wire rope, the conical wedge and the conical casing, thereby achieving the effect of fixing the wire rope.

[0017] (III) Beneficial effects

[0018] The present invention proposes a pulley-type clamping wire rope tensile test detection device and detection method, the device includes a clamping plate, a conical sleeve, a conical wedge and a connecting piece, the clamping plate is used to clamp the upper and lower jaws of the tensile test machine; the conical sleeve includes a U-shaped double arm located at the upper part and a flat conical tube body located at the lower part, the flat conical tube body has a hollow structure with a wide top and a narrow bottom, and the interior is used to accommodate the conical wedge and the wire rope to be subjected to the tensile test; the conical wedge is a flat conical sheet body with a wide top and a narrow bottom structure, and the side of the conical wedge is processed with a concave arc surface for installing the wire rope, and the wire rope and the conical wedge are integrally placed in the flat conical tube body of the conical sleeve from the top of the conical sleeve; the connecting piece penetrates the through holes on the clamping plate and the U-shaped double arm to connect the clamping plate with the conical sleeve. The present invention can solve the problem that the wire rope cannot be subjected to the tensile test. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a schematic diagram of the overall structure of the pulley type clamping wire rope tensile test detection device of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the clamping plate in the present invention;

[0021] Figure 3 It is a schematic diagram of the conical sleeve structure in the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the tapered wedge in the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the connecting piece in the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the retaining spring in the present invention.

[0025] In the figure: 1-clamping plate, 2-conical sleeve, 3-conical wedge, 4-connecting piece, 5-circlip, 4-1-strip bolt, 4-2-nut. DETAILED DESCRIPTION

[0026] In order to make the purpose, content and advantages of the present invention more clear, the specific implementation methods of the present invention are further described in detail below in conjunction with the drawings and examples.

[0027] This embodiment provides a pulley type clamping wire rope tensile test detection device, the structure of which is as follows: Figure 1 As shown, it mainly includes a clamping plate 1, a conical sleeve 2, a conical wedge 3, a connecting piece 4 and a retaining spring 5.

[0028] like Figure 2 As shown, the clamping plate 1 is a rectangular metal plate, and a through hole is processed at the lower position of the metal plate.

[0029] like Figure 3 As shown, the conical sleeve 2 includes U-shaped double arms at the upper part and a flat conical tube body at the lower part. The U-shaped double arms are respectively processed with through holes of the same size as the through holes on the clamping plate 1. The flat conical tube body has a hollow structure that is wide at the top and narrow at the bottom, and the inside is used to accommodate the conical wedge 3 and the steel wire rope to be subjected to the tensile test.

[0030] like Figure 4 As shown, the conical wedge block 3 is a flat conical sheet, and also has a structure of being wide at the top and narrow at the bottom. The side of the conical wedge block 3 is processed with a concave arc surface, and the radius of curvature matches the diameter of the steel wire rope to be subjected to the tensile test.

[0031] like Figure 5As shown, the connecting member 4 includes a polished bolt 4-1 and a nut 4-2. The tail of the polished bolt 4-1 is processed with a retaining spring mounting hole for inserting the retaining spring 5. The nut 4-2 is used to prevent the clamping plate 1 and the tapered sleeve 2 from moving left and right during the test.

[0032] like Figure 6 As shown, the circlip 5 is used to insert into the circlip mounting hole of the polished bolt 4-1 after the entire detection device is assembled to prevent the nut 4-2 from falling off. When performing a wire rope tensile test, first use the polished bolt 4-1 to penetrate the through holes on the clamping plate 1 and the tapered sleeve 2, connect the clamping plate 1 and the tapered sleeve 2 together, install the nut 4-2 on the other end of the polished bolt 4-1, and insert the circlip 5 into the circlip mounting hole on the polished bolt 4-1 to prevent the nut 4-2 from falling off.

[0033] When conducting a tensile test, a conical wedge 3 with a concave arc surface matching the steel wire rope to be subjected to the tensile test is selected, and the steel wire rope to be subjected to the tensile test is wound from one narrow end to the other side along the concave arc surface of the conical wedge 3. The steel wire rope and the conical wedge 3 are integrally placed in the flat conical tube body of the conical sleeve 2 from the top of the conical sleeve 2 to complete the clamping of one end of the steel wire rope, and the other end of the steel wire rope is clamped in the same way. When conducting a tensile test, the two clamping devices are clamped in the upper and lower jaws of the tensile testing machine respectively, and then the equipment is turned on for a tensile test. During the test, under the action of tension, the steel wire rope drives the conical wedge 3 to move forward inside the conical sleeve 2, and then forms a positive pressure on the side outer peripheral surface of the conical wedge 3, so that friction self-locking is formed between the steel wire rope, the conical wedge 3 and the conical sleeve 2, thereby achieving the effect of fixing the steel wire rope.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A pulley type clamping wire rope tensile test detection device, characterized in that: The tensile test detection device comprises a clamping plate, a conical sleeve, a conical wedge and a connecting piece; wherein, The clamping plate is used for clamping at the upper and lower jaws of the tensile testing machine, and a through hole is processed on the plate body of the clamping plate; the conical sleeve includes a U-shaped double arm located at the upper part and a flat conical tube body located at the lower part, and the U-shaped double arms are respectively processed with through holes of the same size as the through holes on the clamping plate, and the flat conical tube body has a hollow structure that is wide at the top and narrow at the bottom, and the interior is used to accommodate a conical wedge and a steel wire rope to be subjected to a tensile test; the conical wedge is a flat conical sheet body with a wide top and narrow bottom structure, and the side of the conical wedge is processed with a concave arc surface for installing the steel wire rope, and the steel wire rope and the conical wedge are placed as a whole into the flat conical tube body of the conical sleeve from the top of the conical sleeve; the connecting piece is inserted into the through holes on the clamping plate and the U-shaped double arms, and is used to connect the clamping plate with the conical sleeve.

2. The pulley type clamping wire rope tensile test detection device according to claim 1 is characterized in that: The clamping plate adopts a rectangular plate body.

3. The pulley type clamping wire rope tensile test detection device according to claim 2 is characterized in that: The clamping plate is a metal plate.

4. The pulley type clamping wire rope tensile test detection device according to claim 3 is characterized in that: A through hole is processed at the lower position of the metal plate.

5. The pulley type clamping wire rope tensile test detection device according to claim 1, characterized in that: The curvature radius of the concave arc surface matches the diameter of the steel wire rope to be subjected to the tensile test.

6. The pulley type clamping wire rope tensile test detection device according to claim 1, characterized in that: The connecting piece includes a bare bolt and a nut; wherein the bare bolt passes through the through holes on the clamping plate and the U-shaped double arms to connect the clamping plate and the tapered sleeve together, and a nut is installed at the other end of the bare bolt to prevent the clamping plate and the tapered sleeve from moving left and right during the test.

7. The pulley type clamping wire rope tensile test detection device according to claim 6, characterized in that: A retaining ring mounting hole is processed at the tail of the polished rod bolt, and the retaining ring is inserted into the retaining ring mounting hole to prevent the nut from falling off.

8. A wire rope tensile test detection method, characterized in that: The pulley-type clamping wire rope tensile test detection device according to any one of claims 1 to 7 is used, and the detection method is: Select a conical wedge with a concave arc surface matching the steel wire rope to be subjected to the tensile test, and wind the steel wire rope to be subjected to the tensile test from one side of the narrow end to the other side along the concave arc surface of the conical wedge. Put the steel wire rope and the conical wedge into the flat conical tube body of the conical sleeve from the top of the conical sleeve as a whole, and complete the clamping of one end of the steel wire rope. Clamp the other end of the steel wire rope in the same way. When conducting a tensile test, the two clamping devices are respectively clamped on the upper and lower jaws of the tensile testing machine, and then the equipment is turned on to conduct the tensile test; during the test, under the action of tension, the wire rope drives the conical wedge to move forward inside the conical casing, thereby forming a positive pressure on the side outer peripheral surface of the conical wedge, so that friction self-locking is formed between the wire rope, the conical wedge and the conical casing, thereby achieving the effect of fixing the wire rope.

Images