Tension testing machine for pre-twisted fitting

Abstract

The utility model relates to the technical field of pre-twisted fittings, and discloses a tension tester for pre-twisted fittings, which comprises a base and a top plate, a control panel is mounted on the front side of the base, adjustable support frames are mounted between two sides of the top plate and the base, and a hydraulic tension bar is mounted on the upper side of the middle of the base in a penetrating manner. The top of the hydraulic tension bar and the lower side of the top plate are respectively provided with a test connection assembly, the test connection assembly comprises a mounting plate, a tension meter and a locking piece, and two ends of the pre-twisted fitting are respectively connected with the locking piece; the upper side of the mounting plate is provided with telescopic sleeves, and the upper and lower groups of telescopic sleeves sleeve the outer side of the pre-twisted fitting and are connected through bolts. Compared with the prior art, the tensile testing machine has the advantages that the two groups of telescopic sleeves are connected and sleeved on the outer side of the pre-twisted fitting, splashing fragments are intercepted, a better protection effect is achieved, the size is small, more space is not occupied, the supporting frame can be adjusted, the distance between the top plate and the base can be adjusted, and the tensile testing machine is convenient to carry and carry.

Description

Technical Field

[0001] This utility model relates to the field of pre-stretched fittings technology, specifically to a tensile testing machine for pre-stretched fittings. Background Technology

[0002] Pre-stretched fittings are fittings made by winding pre-formed spiral strips around conductors or ground wires to bear mechanical or electrical loads. They are mainly used in all-dielectric self-supporting optical cables, fiber optic composite overhead ground wire cables, and ultra-high voltage transmission line projects.

[0003] Tensile testing of pre-stranded fittings is an important component of fitting performance. Currently, most testing devices for pre-stranded fittings have complex structures, and when the fitting breaks, it generates scattered fragments, posing a safety hazard. The existing solution is to cover the outside of the testing device with a protective cover. However, since the original testing device for pre-stranded fittings is already complex, this protective method makes the testing device even larger, inconvenient to transport and carry.

[0004] To address the aforementioned technical problems, this application proposes a tensile testing machine for pre-stretched fittings. Utility Model Content

[0005] I. Technical problems to be solved

[0006] The technical problem this invention aims to solve is that when a hardware is broken, it generates scattered fragments, posing a safety hazard. The existing solution involves covering the outside of the testing device with a protective cover. However, the original pre-stretched hardware testing device has a complex structure, and this protective method makes the testing device larger and inconvenient to transport and carry.

[0007] II. Technical Solution

[0008] To solve the above technical problems, the technical solution provided by this utility model is as follows: a tensile testing machine for pre-stretched fittings, comprising a base and a top plate, a control panel installed on the front side of the base, and adjustable support frames installed between the top plate and the base on both sides to adjust the height of the top plate. A hydraulic tension rod is installed through the upper side of the middle of the base, and test connection components are respectively installed on the top of the hydraulic tension rod and the lower side of the top plate. The test connection components include a mounting plate, a tension gauge, and a locking component, and the two ends of the pre-stretched fitting are respectively connected to the locking component.

[0009] The mounting plate is equipped with a telescopic sleeve on its upper side, and the upper and lower sets of the telescopic sleeves are fitted over the outside of the pre-twisted hardware and connected by bolts.

[0010] As an improvement, the force gauge is fixedly mounted on the mounting plate, and the locking element is fixedly mounted on the detection end of the force gauge.

[0011] As an improvement, connecting rings are installed at both ends of the telescopic sleeve. One set of connecting rings is connected to the mounting plate by bolts, and the other set of connecting rings is connected to the connecting rings at the ends of another set of telescopic sleeves by bolts.

[0012] As an improvement, a metal ring is installed on the outer side of each set of edges of the telescopic sleeve, and metal wires are laid inside the folded side of the telescopic sleeve.

[0013] As an improvement, the adjustable support frame consists of a tube and a telescopic plate. The telescopic plate extends and retracts inside the tube. A positioning bolt is installed through the upper part of one side wall of the tube. Multiple sets of threaded holes are provided at different heights of the telescopic plate. The positioning bolt passes through the threaded holes to position the telescopic plate. The lower end of the tube is fixedly installed on the upper side of the base. The top end of the telescopic plate is connected to the lower side of the top plate.

[0014] As an improvement, an inverted U-shaped connecting seat is fixedly installed on the lower side of the top plate, the top of the telescopic plate is inserted into the U-shaped connecting seat and fixedly connected by bolts, and multiple sets of reinforcing support frames are installed between the side wall of the U-shaped connecting seat and the lower side of the top plate.

[0015] III. Beneficial Effects

[0016] The advantages of this utility model compared with the prior art are as follows: by connecting two sets of telescopic sleeves and fitting them on the outside of the pre-twisted fitting, the scattered fragments are intercepted at the moment the fitting breaks, providing a better protective effect. It is small in size and does not occupy much space. The adjustable support frame can adjust the distance between the top plate and the base, reducing the size of the tensile testing machine and making it easier to transport and carry. Attached Figure Description

[0017] Figure 1 This is a test state diagram of a tensile testing machine for pre-stretched fittings according to this utility model.

[0018] Figure 2 This is a diagram showing the pre-test state of a tensile testing machine for pre-stretched fittings according to this utility model.

[0019] Figure 3 This is a schematic diagram of the upper mounting structure of the base of a tensile testing machine for pre-stretched fittings according to this utility model.

[0020] Figure 4 This is a schematic diagram of the mounting structure on the lower side of the top plate of a tensile testing machine for pre-stretched fittings according to this utility model.

[0021] Figure 5 This is a schematic diagram of the telescopic sleeve structure of a pre-stretched fitting tensile testing machine according to this utility model.

[0022] As shown in the figure: 1. Base; 2. Control panel; 3. Top plate; 4. Insert sleeve; 5. Telescopic plate; 6. Positioning bolt; 7. Threaded hole; 8. U-shaped connecting seat; 9. Reinforcing support frame; 10. Hydraulic tension rod; 11. Mounting plate; 12. Tension gauge; 13. Locking device; 14. Pre-twisted hardware; 15. Telescopic sleeve; 16. Metal ring; 17. Connecting ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] As attached Figure 2 and attached Figure 4 As shown, a tensile testing machine for pre-stretched fittings includes a base 1 and a top plate 3. A control panel 2 is installed on the front side of the base 1. An adjustable support frame is installed between the top plate 3 and the base 1 on both sides. The adjustable support frame consists of a tube 4 and a telescopic plate 5. The telescopic plate 5 extends and retracts inside the tube 4. A positioning bolt 6 is installed through the upper part of one side wall of the tube 4. Multiple sets of threaded holes 7 are provided at different heights of the telescopic plate 5. The positioning bolt 6 passes through the threaded holes 7 to position the telescopic plate 5. The lower end of the tube 4 is fixedly installed on the upper side of the base 1. The top end of the telescopic plate 5 is connected to the lower side of the top plate 3 to adjust the height of the top plate 3.

[0025] An inverted U-shaped connecting seat 8 is fixedly installed on the lower side of the top plate 3. The top of the telescopic plate 5 is inserted into the U-shaped connecting seat 8 and fixedly connected by bolts. Multiple sets of reinforcing support frames 9 are installed between the side wall of the U-shaped connecting seat 8 and the lower side of the top plate 3 to enhance the support of the top plate 3.

[0026] As attached Figure 3 As shown, a hydraulic tension rod 10 is installed through the upper middle part of the base 1. Test connection components are respectively installed on the top of the hydraulic tension rod 10 and the lower side of the top plate 3. The test connection components include a mounting plate 11, a tension gauge 12 and a locking member 13. The tension gauge 12 is fixedly installed on the mounting plate 11, and the locking member 13 is fixedly installed on the detection end of the tension gauge 12. The two ends of the pre-twisted fitting 14 are respectively connected to the locking member 13.

[0027] As attached Figure 1 Appendix Figure 2 and attached Figure 5As shown, a telescopic sleeve 15 is installed on the upper side of the mounting plate 11. A metal ring 16 is installed on the outer side of each set of edges of the telescopic sleeve 15 to support the edges of the telescopic sleeve 15 and give the telescopic sleeve 15 strong support. Metal wires are laid inside the folded side of the telescopic sleeve 15 to enhance the protection of the folded side of the telescopic sleeve 15 and prevent fragments from piercing the folded side of the telescopic sleeve 15. Connecting rings 17 are installed at both ends of the telescopic sleeve 15. One set of connecting rings 17 is connected to the mounting plate 11 by bolts, and the other set of connecting rings 17 is connected to the connecting rings 17 at the end of another set of telescopic sleeves 15 by bolts. The upper and lower sets of telescopic sleeves 15 are fitted on the outside of the pre-twisted hardware 14.

[0028] The specific usage method is as follows:

[0029] The two ends of the pre-stretched hardware 14 are respectively installed inside the locking member 13. The two sets of telescopic sleeves 15 are unfolded and connected to the outside of the pre-stretched hardware 14. The hydraulic pull rod 10 is activated through the control panel 2. The hydraulic pull rod 10 retracts to stretch the pre-stretched hardware 14. The tension data is collected by the tension gauge 12 and sent to the processor in the control panel. The data is displayed on the screen. At the moment the hardware breaks, the two sets of telescopic sleeves 15 intercept the flying fragments to prevent them from flying and causing injury to the workers.

[0030] When the tensile testing machine is not in use, pull out the positioning bolt 6 from the threaded hole 7, retract the telescopic plate 5 into the insert 4, adjust the distance between the top plate and the base to reduce the volume of the tensile testing machine, making it easier to transport and carry.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0033] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A pre-stranded hardware tension testing machine, comprising a base (1) and a top plate (3), the front side of the base (1) is provided with a control panel (2), characterized in that: the two sides of the top plate (3) and the base (1) are provided with adjustable support frames, which adjust the height of the top plate (3), the upper side of the middle part of the base (1) is provided with a hydraulic tension rod (10), the top of the hydraulic tension rod (10) and the lower side of the top plate (3) are respectively provided with test connection assemblies, the test connection assemblies comprise mounting plates (11), tension gauges (12) and locking pieces (13), the two ends of the pre-stranded hardware (14) are respectively connected with the locking pieces (13); the upper side of the mounting plate (11) is provided with telescopic sleeves (15), the telescopic sleeves (15) on the upper and lower sides are sleeved outside the pre-stranded hardware (14) and connected through bolts.

2. The pre-stranded tension tester for a utility pole according to claim 1, wherein: The tension gauge (12) is fixedly installed on the mounting plate (11), and the locking piece (13) is fixedly installed on the detection end of the tension gauge (12).

3. The pre-stranded tension tester for hardware according to claim 1, wherein: The two ends of the telescopic sleeve (15) are respectively provided with connecting rings (17), one group of the connecting rings (17) is connected with the mounting plate (11) through bolts, and the other group of the connecting rings (17) is connected with the connecting rings (17) at the ends of the other group of telescopic sleeves (15) through bolts.

4. The pre-stranded tension tester for a utility pole according to claim 3, wherein: The outer side of each group of edges of the telescopic sleeve (15) is provided with a metal ring (16), and the inside of the folded side of the telescopic sleeve (15) is paved with a metal wire.

5. The pre-stranded tension tester for hardware according to claim 1, wherein: The adjustable support frame is composed of a plug-in cylinder (4) and a telescopic plate (5), the telescopic plate (5) is telescopic in the plug-in cylinder (4), a positioning bolt (6) is provided through the upper part of one side wall of the plug-in cylinder (4), a plurality of threaded holes (7) are arranged on different heights of the telescopic plate (5), the positioning bolt (6) penetrates into the threaded hole (7), and the telescopic plate (5) is positioned, the lower end of the plug-in cylinder (4) is fixedly installed on the upper side of the base (1), and the top end of the telescopic plate (5) is connected with the lower side of the top plate (3).

6. The pre-stranded tension tester for a utility pole according to claim 5, wherein: The lower side of the top plate (3) is fixedly provided with an inverted U-shaped connecting seat (8), the top end of the telescopic plate (5) is inserted into the U-shaped connecting seat (8) and fixedly connected through bolts, and a plurality of reinforcing support frames (9) are arranged between the side wall of the U-shaped connecting seat (8) and the lower side of the top plate (3).

Images