A plastic steel band butt joint firmness detection device

Abstract

The application provides a plastic steel belt butt joint firmness detection device, and relates to the technical field of plastic steel belt quality detection, which comprises a test frame, a guide seat is fixedly connected to the bottom of the test frame, a stretching worm is rotatably connected to the right side of the guide seat, a driven gear is fixedly connected to the shaft of the stretching worm, a stretching handle is rotatably connected to the top of the test frame, the rotating winding column can be manually adjusted to rotate, the plastic steel belt is twisted, the phenomenon that the belt body is twisted due to friction or extrusion in the transportation, carrying and other links of goods is simulated, and the firmness of the butt joint point of the plastic steel belt under the state is tested, the plastic steel belt is twisted at different angles and numbers of turns in the state of single clamping, the efficiency of butt joint firmness performance detection of the plastic steel belt under different twisted states is improved, and the problem that when the influence of butt joint strength under different twisted degrees needs to be evaluated, the same sample often needs to be disassembled and manually twisted for multiple times, the process is complicated and low in efficiency is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plastic steel belt quality inspection, and particularly relates to a plastic steel belt butt joint firmness detection device. BACKGROUND

[0002] The plastic steel belt is a modern bundling material with high strength, light weight, safety and environmental protection, and is widely used in industrial packaging and logistics transportation. The plastic steel belt is mainly butt jointed in a hot melting friction welding mode, and does not need any metal buckle or other auxiliary materials. Under pressure, the molten PET rapidly cools down, and the upper and lower two layers of the belt are completely fused into an integral and uniform solid welding point. For an excellent welding point, the tensile strength can reach 60% to 80% of the tensile strength of the plastic steel belt. For the detection of the butt joint firmness of the plastic steel belt, a special tension device is usually used in cooperation with a tension sensor to check whether the butt joint point is separated under the action of a specified tension by clamping the belt body on both sides of the welding point and applying an axial tension.

[0003] However, in actual application, the plastic steel belt is often subjected to friction or extrusion in the transportation and handling of goods, resulting in the distortion of the belt body. The butt joint strength of the plastic steel belt in the distorted state may decrease significantly due to the change of stress distribution in the butt joint area. Although the existing detection method can evaluate the static tensile strength, when the influence of the butt joint strength under different distortion degrees needs to be evaluated, the same sample often needs to be disassembled and manually twisted for multiple times, which is complicated and inefficient, and cannot quickly and systematically detect the butt joint firmness of the plastic steel belt under different distortion states. SUMMARY

[0004] The present application provides a plastic steel belt butt joint firmness detection device to solve the problem that the existing detection method can evaluate the static tensile strength, but when the influence of the butt joint strength under different distortion degrees needs to be evaluated, the same sample often needs to be disassembled and manually twisted for multiple times, which is complicated and inefficient, and cannot quickly and systematically detect the butt joint firmness of the plastic steel belt under different distortion states.

[0005] The application provides a plastic steel belt butt joint firmness detection device, which specifically comprises a test frame, a guide seat is fixedly connected to the bottom of the test frame, a stretching worm is rotatably connected to the right side of the guide seat, a driven gear is fixedly connected to the shaft of the stretching worm, a stretching handle is rotatably connected to the top of the test frame, a driving gear is fixedly connected to the shaft of the stretching handle, the stretching handle drives the stretching worm through the meshing connection of the driven gear and the driving gear, two stretching worms are rotatably connected to the bottom of the test frame, the stretching worms are meshingly connected to the stretching worm, a linkage gear is fixedly connected to the support shaft of the stretching worm, an annular tooth groove with an arc structure is arranged on the outer wheel surface of the linkage gear, the stretching frame is movably connected to the guide seat, a tension detector is fixedly connected to the right end of the stretching frame, a directional lock sleeve is fixedly connected to the right end of the tension detector, a detection pulling shaft is rotatably connected to the directional lock sleeve through a bearing, a pulling shaft rack is arranged on the front side and the rear side of the detection pulling shaft, the pulling shaft rack is meshingly connected to the internal transmission tooth of the annular tooth groove, a translation winding column is fixedly connected to the lower surface of the stretching frame, a rotating bracket is rotatably connected to the left end of the test frame, a rotating winding column is fixedly connected to the right side of the rotating bracket, a twisting worm is fixedly connected to the support shaft of the rotating bracket, a twisting worm is rotatably connected to the left surface in the test frame, and the twisting worm is meshingly connected to the twisting worm.

[0006] Further, a pull rod through hole is formed in the center of the right frame plate of the test frame, the detection pulling shaft is movably connected to the pull rod through hole, and a pulling shaft handle is fixedly connected to the right end of the detection pulling shaft.

[0007] Further, a guide folding edge is formed by bending the bottom edge of the guide seat, a sliding groove is formed in the stretching frame, rollers are rotatably connected to the upper surface and the lower surface in the sliding groove of the stretching frame, and the rollers are rotatably connected to the guide folding edge.

[0008] Further, a head lock plate is connected to the left end of the detection pulling shaft through a screw, a pulling shaft directional socket is formed in the right surface edge of the head lock plate.

[0009] Further, a lock sleeve directional socket is formed in the right end surface in the directional lock sleeve, a directional torsional spring is sleeved on the detection pulling shaft, the directional torsional spring is located in the directional lock sleeve, a first plug is formed by bending the left end of the directional torsional spring, and a second plug is formed by bending the right end of the directional torsional spring.

[0010] Further, the first plug is inserted into the pulling shaft directional socket, and the second plug is inserted into the lock sleeve directional socket.

[0011] Further, the axis of the translation winding column is perpendicular to the front surface of the guide seat, and a translation end interface is horizontally and through-formed in the center of the translation winding column.

[0012] Further, the axis of the rotating winding column is perpendicular to the support shaft axis of the rotating bracket, and a rotating end interface is horizontally and through-formed in the center of the rotating winding column.

[0013] Further, the front end of the branch shaft of the twist worm is fixedly connected with a twist handle.

[0014] Further, the tension detector is connected with a tension display through an electric connection line, and the tension display is fixedly connected to the upper surface of the test frame through a screw.

[0015] The plastic steel belt butt joint firmness detection device has the following beneficial effects:

[0016] The plastic steel belt detection device in the application is used for detecting the tensile strength of the plastic steel belt butt joint node. In the actual test process, the plastic steel belts on both sides of the measured joint are wound on the rotating winding column and the translating winding column respectively. When the plastic steel belts are subjected to tension through friction, they are still tightly wound on the winding column. The stretching worm is rotated through the gear meshing connection and driving of the driving gear and the driven gear. The two linkage gears are rotated through the worm and gear transmission of the stretching worm and the stretching worm wheel. The right movement of the detection pull shaft is controlled through the meshing connection of the internal tooth pattern of the annular tooth groove and the rack of the pull shaft. The stretching frame is pulled to the right through the cooperation of the directional lock sleeve and the tension detector. The plastic steel belt is subjected to tension. The tension is detected through the tension detector and displayed through the tension display. The state of the plastic steel belt under the action of the set tension is observed. The highest value displayed by the tension display at the moment of the tensile test of the plastic steel belt butt joint is measured. The butt joint firmness value of the plastic steel belt is measured. The transmission ratio is improved through the worm and gear, the plastic steel belt is subjected to larger tension, large hydraulic equipment is not needed for driving, the structure is compact, the volume is small, the device is convenient to carry and transfer, and the device is convenient to use. The plastic steel belt can be wound on the winding column for fixation in the non-cutting state. The device can be used for performance quality inspection of the plastic steel belt in the state of binding objects.

[0017] In addition, the rotating support is a rotatable structure. In the state that the plastic steel belt is fixedly installed between the rotating winding column and the translating winding column, the rotating winding column can be manually adjusted to rotate through the worm and gear transmission of the twist worm and the twist worm wheel. The plastic steel belt is twisted. The phenomenon that the belt body is twisted due to friction or extrusion in the transportation, handling and other links of goods is simulated. The stress distribution of the butt joint area of the twisted plastic steel belt changes, and the firmness of the plastic steel belt butt joint in this state is tested. Through the rotatable rotating support, the plastic steel belt can be twisted at different angles and numbers of turns in the state of single clamping through the twist handle and the twist worm. The efficiency of detecting the butt joint firmness of the plastic steel belt in different twisted states is improved.

[0018] In addition, the detection pull shaft in the application can be adjusted in rotation, after the plastic steel belt is fixedly wound on the translation winding column and the rotation winding column, the plastic steel belt is in a relaxed state without being straightened, if the plastic steel belt is slowly straightened by rotating the stretching handle at this time, the stretching efficiency is low and the stretching process is slow, while in the application, the detection pull shaft is rotated by ninety degrees, the pull shaft rack is disengaged from the tooth pattern of the linkage gear, the detection pull shaft is quickly pulled out, the stretching frame is quickly pulled to the right, the plastic steel belt is quickly straightened, the pre-tightening of the plastic steel belt is realized, and then the detection pull shaft restores the original angle under the action of the end directional torsion spring, the pull shaft rack is engaged with the tooth pattern of the linkage gear, the stretching of the plastic steel belt can be continued to be controlled through the stretching handle, compared with the existing transmission hand-operated stretching test mechanism, the pre-tightening of the plastic steel belt can be quickly realized, and the detection efficiency of the butt joint firmness is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings of the embodiments will be briefly introduced below.

[0020] The drawings in the following description are merely related to some embodiments of the application, but not limited to the application.

[0021] In the drawings:

[0022] Figure 1 A schematic view showing the overall structure of the application is shown;

[0023] Figure 2 A front view structure schematic view of the application is shown;

[0024] Figure 3 A structure schematic view of the bottom of the application is shown;

[0025] Figure 4 A structure schematic view of the lower left corner of the application is shown;

[0026] Figure 5 A structure schematic view of the rotating bracket of the application is shown;

[0027] Figure 6 A structure schematic view of the stretching frame of the application is shown;

[0028] Figure 7 A structure schematic view of the linkage gear of the application is shown;

[0029] Figure 8 A structure schematic view of the lock sleeve directional socket of the application is shown;

[0030] Figure 9 A structure schematic view of the pull shaft directional socket of the application is shown;

[0031] Figure 10 A structure schematic view of the application is shown; Figure 7A local enlarged structural schematic view at the middle A;

[0032] Figure 11 A schematic view of the winding mode of the plastic steel belt of the present application is shown when the non-shear test is carried out.

[0033] Reference signs:

[0034] 1, test frame; 101, pull rod hole; 2, guide seat; 201, guide flange; 3, stretching worm; 301, driven gear; 4, stretching handle; 401, driving gear; 5, stretching worm wheel; 501, linkage gear; 502, ring gear; 6, detection pull rod; 601, pull rod rack; 602, pull rod handle; 603, end lock plate; 604, pull rod directional socket; 605, directional torsion spring; 606, first plug; 607, second plug; 7, directional lock sleeve; 701, lock sleeve directional socket; 8, tension detector; 801, tension display; 9, stretching frame; 901, roller; 902, translation winding column; 903, translation end interface; 10, rotating interface frame; 1001, rotating winding column; 1002, rotating end interface; 1003, twisting worm wheel; 11, twisting worm; 1101, twisting handle. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] Embodiment one: please refer to Figures 1 to 11 :

[0037] The application provides a plastic steel band butt joint firmness detection device, which comprises a test frame 1, a guide seat 2 fixedly connected to the bottom of the test frame 1, a stretching worm 3 rotatably connected to the right of the guide seat 2, a driven gear 301 fixedly connected to the shaft of the stretching worm 3, a stretching handle 4 rotatably connected to the top of the test frame 1, a driving gear 401 fixedly connected to the shaft of the stretching handle 4, the stretching handle 4 driving the stretching worm 3 through the meshing connection of the driven gear 301 and the driving gear 401, two stretching worms 5 rotatably connected to the bottom of the test frame 1, the stretching worms 5 being meshingly connected to the stretching worm 3, linkage gears 501 fixedly connected to the support shafts of the stretching worms 5, annular tooth grooves 502 with arc structures arranged on the outer wheel surface of the linkage gears 501, a stretching frame 9 movably connected to the guide seat 2, a tension detector 8 fixedly connected to the right end of the stretching frame 9, a directional lock sleeve 7 fixedly connected to the right end of the tension detector 8, a detection pulling shaft 6 rotatably connected to the directional lock sleeve 7, pulling shaft racks 601 arranged on the front and rear of the detection pulling shaft 6, the pulling shaft racks 601 being meshingly connected to the internal transmission teeth of the annular tooth grooves 502, a translation winding column 902 fixedly connected to the lower surface of the stretching frame 9, a rotating bracket 10 rotatably connected to the left end of the test frame 1, and a rotating winding column 1001 fixedly connected to the right of the rotating bracket 10. Figure 11 In the actual test process, the plastic steel bands on both sides of the measured butt joint are wound on the translation winding column 902 and the rotating winding column 1001 through the rotating winding column 1001 and the translation winding column 902 respectively, the plastic steel bands are still tightly wound on the winding columns when being subjected to the tension through the friction force, the stretching handle 4 is manually rotated, the stretching worm 3 is driven to rotate through the gear meshing connection of the driving gear 401 and the driven gear 301, the two linkage gears 501 are driven to rotate through the worm and gear transmission of the stretching worm 3 and the stretching worm 5, the detection pulling shaft 6 is controlled to move rightwards through the meshing connection of the internal tooth pattern of the annular tooth groove 502 and the pulling shaft rack 601, the stretching frame 9 is pulled rightwards in cooperation with the directional lock sleeve 7 and the tension detector 8, the tension is applied to the plastic steel band, the tension is detected through the tension detector 8 and displayed through a tension display 801, the state of the plastic steel band under the action of the set tension is observed, or the highest value displayed by the tension display 801 at the moment of the plastic steel band being pulled off the butt joint is observed, so that the butt joint firmness value of the plastic steel band can be measured.

[0038] In the embodiments of the present disclosure, a pull rod through hole 101 is arranged at the center of the right frame plate of the test frame 1, the detection pulling shaft 6 is movably connected to the pull rod through hole 101, and a pulling shaft handle 602 is fixedly connected to the right end of the detection pulling shaft 6, so that the detection pulling shaft 6 can slide and rotate in the pull rod through hole 101, and the axial and circumferential adjustments can be realized.

[0039] In the embodiment of the present disclosure, the bottom edge of the guide seat 2 is bent to form a guide bent edge 201, the stretching frame 9 is provided with a sliding groove, and the upper surface and the lower surface of the sliding groove of the stretching frame 9 are both rotatably connected with rollers 901, the rollers 901 are rotatably connected with the guide bent edge 201, the guide bent edge 201 realizes a guide function, guides the stretching frame 9 to move horizontally in the left-right direction, and reduces the friction in the moving process.

[0040] In the embodiment of the present disclosure, the axis of the translation winding column 902 is perpendicular to the front surface of the guide seat 2, the center of the translation winding column 902 is horizontally and throughly provided with a translation end interface 903, the axis of the rotation winding column 1001 is perpendicular to the axis of the support shaft of the rotation support 10, and the center of the rotation winding column 1001 is horizontally and throughly provided with a rotation end interface 1002; as shown in the attached Figure 11 In the embodiment of the present disclosure, the axis of the translation winding column 902 is perpendicular to the front surface of the guide seat 2, the center of the translation winding column 902 is horizontally and throughly provided with a translation end interface 903, the axis of the rotation winding column 1001 is perpendicular to the axis of the support shaft of the rotation support 10, and the center of the rotation winding column 1001 is horizontally and throughly provided with a rotation end interface 1002; as shown in the attached

[0041] In the embodiment of the present disclosure, the support shaft of the rotation support 10 is fixedly connected with a twisted worm gear 1003, the inside left surface of the test frame 1 is rotatably connected with a twisted worm 11, the twisted worm 11 is meshingly connected with the twisted worm gear 1003, the front end of the support shaft of the twisted worm 11 is fixedly connected with a twisted handle 1101, the tension detector 8 is connected with a tension display 801 through an electric connection line, the tension display 801 is fixedly connected to the upper surface of the test frame 1 through a screw, in the state that the plastic steel belt is fixedly installed between the rotation winding column 1001 and the translation winding column 902, the rotation winding column 1001 is manually adjusted to rotate through the worm and gear transmission of the twisted worm 11 and the twisted worm gear 1003, the plastic steel belt is twisted, the phenomenon that the belt body is twisted due to the friction or extrusion in the transportation, handling and other links of goods is simulated, the stress distribution of the plastic steel belt in the abutted area in the twisted state is changed, the firmness of the abutted point of the plastic steel belt in the state is tested, and the plastic steel belt is twisted at different angles and numbers of turns in the state of single clamping through the rotatable rotation support 10, the twisted handle 1101 and the twisted worm 11.

[0042] In the embodiment two, on the basis of the embodiment one, the detection pull shaft 6 left end is connected with the end head locking plate 603 through the screw, the end head locking plate 603 right surface edge is provided with the pull shaft directional socket 604; the directional locking sleeve 7 inside right end surface is provided with the locking sleeve directional socket 701, the detection pull shaft 6 is sleeved with the directional torsion spring 605, the directional torsion spring 605 is located inside the directional locking sleeve 7, the left end head of the directional torsion spring 605 is bent and processed with the first plug 606, the right end head of the directional torsion spring 605 is bent and processed with the second plug 607; the first plug 606 is inserted inside the pull shaft directional socket 604, the second plug 607 is inserted inside the locking sleeve directional socket 701; under the normal state, when the directional torsion spring 605 is normal, the first plug 606 and the second plug 607 are respectively located inside the pull shaft directional socket 604 and the locking sleeve directional socket 701, the circumferential direction of the detection pull shaft 6 is limited, and the axial direction of the detection pull shaft 6 is locked through the bearing connection of the directional locking sleeve 7 and the detection pull shaft 6, under this state, the two pull shaft racks 601 and the gear teeth of the two linkage gears 501 are engaged, when the detection pull shaft 6 is rotated by ninety degrees, the directional torsion spring 605 is deformed and stored, the pull shaft rack 601 and the tooth pattern of the linkage gear 501 are separated, under this state, the detection pull shaft 6 can be manually pulled along the axial direction, so that the stretching frame 9 moves quickly, and the plastic steel belt is quickly stretched straight.

[0043] The working principle of the embodiment is as follows: first, the body of the plastic steel belt on both sides of the butt joint point to be detected is pressed according to the Figure 2 or the Figure 11The state shown in the figure is wound on the translation winding column 902 and the rotation winding column 1001, respectively, the pull shaft rotating handle 602 is rotated by ninety degrees and pulled to the right, the stretching frame 9 is pulled to the right, the plastic steel belt is in a straightened state, the plastic steel belt is pre-tightened, then the pull shaft 6 is restored to the original circumferential angle under the elastic action of the directional torsional spring 605, the pull shaft rack 601 and the linkage gear 501 are restored to meshing, the stretching rotating handle 4 is manually rotated, the stretching worm 3 is driven to rotate through the gear meshing connection of the driving gear 401 and the driven gear 301, the two linkage gears 501 are driven to rotate through the worm and gear transmission of the stretching worm 3 and the stretching worm wheel 5, and the right movement of the pull shaft 6 is controlled and detected through the meshing connection of the internal tooth pattern of the annular tooth groove 502 and the pull shaft rack 601, the stretching frame 9 is pulled to the right in cooperation with the directional lock sleeve 7 and the tension detector 8, the tension is applied to the plastic steel belt, the tension is detected through the tension detector 8 and displayed through the tension display 801, the state of the plastic steel belt under the action of the set tension is observed, or the highest value displayed by the tension display 801 at the moment of the breakaway of the plastic steel belt is tested, and the butt joint firmness value of the plastic steel belt can be measured, when the tensile strength of the plastic steel belt in the twisted state is measured, the rotation winding column 1001 is manually adjusted to rotate through the worm and gear transmission of the twisting worm 11 and the twisting worm wheel 1003, the plastic steel belt is twisted, the phenomenon that the belt body is twisted due to friction or extrusion in the transportation, handling and other links of goods is simulated, the stress distribution of the butt joint area of the twisted plastic steel belt is changed, and the tension is applied to the plastic steel belt, and the firmness of the plastic steel belt in the twisted state is tested.

[0044] In this paper, the following points need attention:

[0045] 1. The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.

[0046] 2. In the case of no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined to obtain new embodiments.

[0047] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A device for detecting butt joint firmness of a plastic steel belt, comprising: Test frame (1), characterized in that the bottom of the test frame (1) is provided with a guide seat (2), the right side of the guide seat (2) is rotatably connected with a stretching worm (3), the shaft of the stretching worm (3) is fixedly connected with a driven gear (301), the top of the test frame (1) is rotatably connected with a stretching handle (4), the stretching handle (4) drives the stretching worm (3) through the meshing connection of the driven gear (301) and the driving gear (401), the bottom of the test frame (1) is rotatably connected with two stretching worm gears (5), the stretching worm gears (5) are meshingly connected with the stretching worm (3), the stretching worm gears (5) are fixedly connected with a linkage gear (501) through a support shaft, the linkage gear (501) is externally provided with an annular tooth groove (502), the guide seat (2) is movably connected with a stretching frame (9), the right end of the stretching frame (9) is fixedly connected with a tension detector (8), the right end of the tension detector (8) is fixedly connected with a directional lock sleeve (7), the directional lock sleeve (7) is rotatably connected with a detection pull shaft (6), the detection pull shaft (6) is externally provided with a pull shaft rack (601), the pull shaft rack (601) is meshingly connected with internal transmission teeth of the annular tooth groove (502), the lower surface of the stretching frame (9) is fixedly connected with a translation winding column (902), the left end of the inside of the test frame (1) is rotatably connected with a rotating bracket (10), the right side of the rotating bracket (10) is fixedly connected with a rotating winding column (1001), the support shaft of the rotating bracket (10) is fixedly connected with a twisting worm (1003), the left surface of the inside of the test frame (1) is rotatably connected with a twisting worm (11) which is meshingly connected with the twisting worm (1003), the center of the right frame plate of the test frame (1) is provided with a pull rod through hole (101), the detection pull shaft (6) is movably connected with the pull rod through hole (101), the right end of the detection pull shaft (6) is fixedly connected with a pull shaft handle (602), the left end of the detection pull shaft (6) is screw-connected with an end lock plate (603), the right surface edge of the end lock plate (603) is provided with a pull shaft directional socket (604), the inside right end face of the directional lock sleeve (7) is provided with a lock sleeve directional socket (701), the detection pull shaft (6) is sleeved with a directional torsional spring (605), the directional torsional spring (605) is located in the inside of the directional lock sleeve (7), the left end of the directional torsional spring (605) is bent and processed with a first plug (606), the right end of the directional torsional spring (605) is bent and processed with a second plug (607).

2. The device for detecting the butt fastening of the plastic steel band according to claim 1, characterized in that, The bottom edge of the guide seat (2) is bent and processed with a guide folding edge (201), the stretching frame (9) is provided with a sliding groove, the upper and lower surfaces of the inside of the sliding groove of the stretching frame (9) are rotatably connected with rollers (901), the rollers (901) are rollingly connected with the guide folding edge (201).

3. The device for detecting the butt fastening of the plastic steel band according to claim 1, characterized in that, The first plug (606) is inserted into the inside of the pull shaft directional socket (604), and the second plug (607) is inserted into the inside of the lock sleeve directional socket (701).

4. The device for detecting the butt fastening of the plastic steel band according to claim 1, characterized in that, The axis of the translation winding column (902) is perpendicular to the front surface of the guide seat (2), and the center of the translation winding column (902) is horizontally and through-provided with a translation end interface (903).

5. The device for detecting the butt fastening of the plastic steel band according to claim 1, characterized in that, The rotation winding column (1001) axis is perpendicular to the rotation support (10) axis, the rotation winding column (1001) center is horizontally penetrated and is provided with a rotation end interface (1002), the support front end of the torsion worm (11) is fixedly connected with a torsion handle (1101), the tension detector (8) is connected with a tension display (801) through an electric connection line, and the tension display (801) is fixedly connected to the upper surface of the test frame (1) through screws.

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