Steel strand testing machine

Abstract

The invention provides a steel strand testing machine, and belongs to the technical field of steel strand detection, the steel strand testing machine comprises a host device, a base, a mounting table, a clamping mechanism, a lifting mechanism, a protective frame and a closing mechanism, the base is composed of a substrate and a protective shell, and the protective shell is fixedly connected to the top of the substrate; the two mounting tables are symmetrically arranged, a supporting mechanism is arranged between the mounting tables and the base, the mounting table located on the upper side is fixedly arranged on the supporting mechanism, the mounting table located on the lower side is movably arranged on the supporting mechanism, and positioning holes are formed in the centers of the mounting tables and the supporting mechanism; through the double-clamp design of the first jaw clamp and the second jaw clamp, the clamped area of the steel strand is larger, the radial force for clamping the steel strand is increased, the possibility that the steel strand is cut off is reduced, the situation that the steel strand falls off and slides is effectively avoided, the test process is more reasonable and stable, the situation that the steel strand breaks and flies can be stopped, and the test efficiency is improved. The safety of workers is protected, meanwhile, test equipment can be protected, and economic losses are avoided.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of steel strand detection, and particularly relates to a steel strand testing machine. BACKGROUND

[0002] The steel strand is a steel product composed of a plurality of steel wires, and the surface of the carbon steel can be provided with a zinc plating layer, a zinc-aluminum alloy layer, an aluminum coating layer, a copper plating layer, or an epoxy resin coating according to needs. The steel strand prestressed tension construction controls the tension force, which refers to the tension force of the steel strand before the anchor clamp after the prestressed tension is completed. Therefore, when calculating the theoretical elongation of the steel strand prestressed tension, the distance between the two anchoring points of the steel strand should be taken as the calculation length of the steel strand. However, the control tension force of the steel strand during the prestressed tension is controlled at the anchor of the jack tool, so as to control and calculate conveniently, the distance between the two anchoring points of the steel strand is generally added to the working length of the steel strand in the tension jack as the calculation length of the theoretical elongation of the steel strand prestressed tension.

[0003] The prior art discloses a steel strand testing machine in Chinese patent with the application number CN201721838116.8, which comprises a base, an upper beam, a stand, a lead screw and a moving beam. The stand is fixedly connected between the base and the upper beam. The lead screw is rotatably connected between the base and the upper beam. The moving beam is penetrated by the stand and is slidably connected with the stand. The moving beam is penetrated by the lead screw and is threadedly connected with the lead screw. The upper beam is provided with an upper jaw seat for clamping the steel strand. The moving beam is provided with a lower jaw seat for clamping the steel strand. The moving beam is provided with a tension sensor for detecting the tension of the steel strand. The top surface of the upper beam is provided with a lifting ring. The top surface of the upper beam is provided with a sliding groove. One end of the sliding groove penetrates the side wall of the upper beam, and the groove width of the sliding groove gradually decreases away from the groove bottom. The lower end of the lifting ring is provided with a sliding block for sliding connection with the sliding groove. The upper end of the lifting ring is provided with a notch for the lifting rope.

[0004] In actual testing, a section of steel strand needs to be intercepted for detection. The steel strand is clamped near the two ends, and then is pulled up. The clamping force at the clamping position needs to be sufficient to prevent slipping and falling. The existing clamping method generally uses a single set of jaw clamps. Although the clamping force is sufficient, the shearing force between the steel strand jaw clamps may shear the steel strand, which needs to be retested. Moreover, the broken steel strand may directly burst and fly, which may seriously affect the life safety of the workers and damage the test equipment, resulting in economic losses. Therefore, a new steel strand testing machine is proposed. SUMMARY

[0005] The present application aims to provide a steel strand testing machine, which aims to solve at least one technical problem in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A steel strand testing machine, comprising:

[0008] Host equipment;

[0009] The base consists of a base plate and a protective shell, the protective shell being fixedly connected to the top of the base plate;

[0010] There are two mounting platforms arranged symmetrically. A support mechanism is provided between the platform and the base. The upper mounting platform is fixed on the support mechanism, while the lower mounting platform is movable on the support mechanism. A positioning hole is provided at the center of each platform.

[0011] The clamping mechanism consists of two sets, symmetrically arranged between two mounting platforms, and is used to clamp both sides of the steel strand.

[0012] The lifting mechanism, which is mounted on the base, lifts and lowers the mounting platform located on the lower side, thereby achieving the purpose of stretching the steel strand.

[0013] A protective frame, fixedly connected to the top of the protective shell, has an observation port on one side; and

[0014] The closing mechanism, located inside the protective frame, is used to close the observation port to prevent broken steel strands from being ejected and shot out.

[0015] As a preferred embodiment of the present invention, the support mechanism includes a straight rod, a first corner sleeve, and a second corner sleeve. Four straight rods, first corner sleeves, and second corner sleeves are provided. Each straight rod is fixedly connected to the top of the base plate and extends upward through the protective shell. Each first corner sleeve is slidably connected to the surface of the corresponding straight rod. A mounting platform located on the lower side is fixedly connected between the four first corner sleeves. Each second corner sleeve is fixedly connected to the top of the corresponding straight rod. A mounting platform located on the upper side is fixedly connected between the four second corner sleeves.

[0016] As a preferred embodiment of the present invention, each set of clamping mechanisms includes:

[0017] The first slide rail is fixedly connected to one side of two mounting platforms that are close to each other;

[0018] There are two sliding sleeve assemblies, both of which are slidably connected to the surface of the first slide rail, and both of which are fixedly connected to a straight rack at their bottom.

[0019] The first jaw clamp has two symmetrically arranged clamps, which are respectively fixedly connected to the side of the two sets of sliding sleeves that are close to each other.

[0020] The bearing housing is fixedly connected to one side of two mounting platforms that are close to each other.

[0021] A spur gear, which is rotatably connected in a bearing housing, meshes with two spur racks;

[0022] A hydraulic cylinder, fixedly connected to one side of two mounting platforms, with its extended end fixedly connected to one of the first jaw clamps; and

[0023] The reinforcement components, located on opposite sides of the two mounting platforms, are used to strengthen the clamping force on the steel strands, thereby preventing slippage and detachment.

[0024] As a preferred embodiment of the present invention, each set of the reinforcement components includes two second jaw clamps and two electric push rods. The two mounting platforms are provided with mounting grooves on opposite sides. The second jaw clamps are symmetrically slidably connected in the mounting grooves. The two electric push rods are symmetrically fixedly connected in the mounting grooves. The extended end of each electric push rod is fixedly connected to the corresponding second jaw clamp. The positioning hole is located between the two second jaw clamps. A protective plate is fixedly connected to the mounting groove.

[0025] As a preferred embodiment of the present invention, the lifting mechanism includes:

[0026] There are two ball screws, both of which are rotatably connected to the base plate and extend upward through the protective shell. A second bevel gear is fixedly connected to the circumferential surface of each of them.

[0027] There are two ball screw sleeves, which are fixedly connected to both sides of the mounting platform and are threaded to the circumferential surface of the corresponding ball screw.

[0028] The bearing bracket is fixedly connected to the top of the base plate;

[0029] A mounting shaft, rotatably connected within a bearing bracket and extending to both sides, has a first bevel gear fixedly connected to both ends, each first bevel gear meshing with a corresponding second bevel gear; and

[0030] The drive assembly, located on the upper side of the base plate, is used to drive the two ball screws to rotate synchronously, thereby causing the screw sleeve to rise and fall.

[0031] In a preferred embodiment of the present invention, the drive assembly includes a driven bevel gear, a servo motor, and a driving bevel gear. The driven bevel gear is fixedly connected to the circumferential surface of the mounting shaft, the servo motor is fixedly connected to the top of the substrate, and the driving bevel gear is fixedly connected to the output end of the servo motor. The driving bevel gear meshes with the driven bevel gear.

[0032] As a preferred embodiment of the present invention, the closing mechanism includes:

[0033] The second slide rail is provided in two parts. The second slide rail located on the lower side is fixedly connected to the top of the protective shell, and the second slide rail located on the upper side is fixedly connected to the upper edge of the protective frame.

[0034] Two arc-shaped baffles are symmetrically arranged, each slidably connected between two second slide rails; and

[0035] The automatic closing assembly consists of two symmetrically arranged sets, which drive two arc-shaped baffles to move in opposite directions, thereby closing the observation port.

[0036] As a preferred embodiment of the present invention, each group of automatic closing components includes a reduction motor, a pinion, and an arc-shaped rack. The reduction motor is fixedly connected to the lower inner wall of the protective shell, the pinion is fixedly connected to the output end of the reduction motor, the pinion is located on the upper side of the base plate, and the arc-shaped rack is fixedly connected to the inner wall of the arc-shaped baffle. The pinion meshes with the arc-shaped rack.

[0037] As a preferred embodiment of the present invention, both the protective frame and the arc-shaped baffle have uniformly distributed light-transmitting holes on their surfaces, and the opening shapes of the protective frame and the arc-shaped baffle are different.

[0038] In a preferred embodiment of the present invention, the servo motor, the geared motor, and the hydraulic cylinder are all electrically connected to the host device.

[0039] Compared with the prior art, the beneficial effects of the present invention are:

[0040] 1. In this design, the two ends of the steel strand are passed through two positioning holes and extended outwards. The steel strand is clamped by the first jaw clamp, and the extension end of the electric push rod pushes the second jaw clamp to move, so that the two second jaw clamps come closer together to clamp the steel strand. The second jaw clamp and the first jaw clamp are located in different directions. The mounting platform on the upper side is fixed in position, while the mounting platform on the lower side can be raised and lowered linearly under the drive of the lifting mechanism. The clamping mechanism on the lower side follows the linear rise and fall, and then the steel strand is tested. Through the double clamping design of the first jaw clamp and the second jaw clamp, the clamping area of ​​the steel strand is larger, increasing the radial force of clamping the steel strand, but reducing the possibility of the steel strand being cut, effectively avoiding the situation of the steel strand falling off and slipping, and making the test process more reasonable and stable.

[0041] 2. In this scheme, during the test, the output end of the reduction motor drives the pinion to rotate, which in turn drives the two arc-shaped racks to move, causing the two arc-shaped baffles to move in opposite directions. The two arc-shaped baffles close the observation port. Under the protection of the protective frame and the two arc-shaped baffles, the steel strand can be prevented from breaking and flying away, protecting the safety of the staff and the test equipment, thus avoiding economic losses. The surfaces of the protective frame and the arc-shaped baffles are all evenly distributed light-transmitting holes, and the opening shapes of the protective frame and the arc-shaped baffles are different, allowing for safe observation of the test from the outside, making it more convenient to use. Attached Figure Description

[0042] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0043] In the attached diagram:

[0044] Figure 1 This is an overall structural diagram of the steel strand testing machine described in this invention;

[0045] Figure 2 This is a schematic diagram of the steel strand testing machine of the present invention after the protective frame has been disassembled;

[0046] Figure 3 This is a schematic diagram of the steel strand testing machine of the present invention after the arc-shaped baffle is disassembled;

[0047] Figure 4 This is a schematic diagram of the internal structure of the protective shell described in this invention;

[0048] Figure 5 This is a schematic diagram of the structure of the substrate and its connecting components described in this invention;

[0049] Figure 6 This is a schematic diagram of the structure of the mounting platform and its connecting components described in this invention;

[0050] Figure 7 This is an exploded view of the mounting platform and its connecting components as described in this invention;

[0051] Figure 8 This is a schematic diagram of the mounting groove and its connecting components as described in this invention;

[0052] Figure 9 This is a schematic diagram of the closing mechanism described in this invention;

[0053] Figure 10 For the present invention Figure 9 Enlarged view of point A in the image.

[0054] Explanation of the labels in the diagram:

[0055] 1. Main unit;

[0056] 2. Base; 201. Base plate; 202. Protective shell;

[0057] 3. Mounting platform; 301. Positioning hole; 302. Mounting slot;

[0058] 4. Clamping mechanism; 401. First slide rail; 402. Sliding sleeve assembly; 403. First jaw clamp; 404. Spur rack; 405. Bearing seat; 406. Spur gear; 407. Hydraulic cylinder; 408. Protective plate; 409. Electric push rod; 4010. Second jaw clamp;

[0059] 5. Support mechanism; 501. Straight rod; 502. First corner sleeve; 503. Second corner sleeve;

[0060] 6. Lifting mechanism; 601. Ball screw; 602. Screw sleeve; 603. Bearing bracket; 604. Mounting shaft; 605. Driven bevel gear; 606. First bevel gear; 607. Second bevel gear; 608. Servo motor; 609. Driven bevel gear;

[0061] 7. Protective frame; 701. Observation port;

[0062] 8. Closing mechanism; 801. Second slide rail; 802. Arc-shaped baffle; 803. Gear motor; 804. Pinion; 805. Arc-shaped rack. Detailed Implementation

[0063] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0064] Please see Figures 1-10 The technical solution provided in this embodiment is as follows:

[0065] A steel strand testing machine includes: a main unit 1, a base 2, a mounting platform 3, a clamping mechanism 4, a lifting mechanism 6, a protective frame 7, and a closing mechanism 8. The base 2 consists of a base plate 201 and a protective shell 202, with the protective shell 202 fixedly connected to the top of the base plate 201. Two mounting platforms 3 are symmetrically arranged, with a support mechanism 5 between them and the base 2. The upper mounting platform 3 is fixedly mounted on the support mechanism 5, while the lower mounting platform 3 is movable on the support mechanism 5. Each platform has a positioning hole 301 at its center. Two sets of clamping mechanisms 4 are symmetrically arranged between the two mounting platforms 3 and are used to clamp the two sides of the steel strand. The lifting mechanism 6 is located on the base 2 and drives the lower mounting platform 3 to rise and fall, thereby stretching the steel strand. The protective frame 7 is fixedly connected to the top of the protective shell 202 and has an observation port 701 on one side. The closing mechanism 8 is located inside the protective frame 7 and is used to close the observation port 701 to prevent broken steel strands from being ejected and ejected.

[0066] In a specific embodiment of the present invention, the two mounting platforms 3 are symmetrically designed. During use, the steel strand is placed between the two mounting platforms 3, with both ends of the steel strand passing through the two positioning holes 301 and extending outwards. Then, on each mounting platform 3, the extended end of the hydraulic cylinder 407 pushes the first jaw clamp 403, which is fixedly connected to it, to move. Under the action of the spur gear 406, the two spur racks 404 move in opposite directions, thereby causing the two first jaw clamps 403 to move in opposite directions, clamping the steel strand. Furthermore, the extended end of the electric push rod 409 pushes the second jaw clamp 4010 to move, causing the two second jaw clamps 4010 to move closer together and clamp the steel strand. The second jaw clamps 4010 and the first jaw clamps 403 are located in different directions. The mounting platform 3 on the upper side is fixed in position, while the mounting platform 3 on the lower side can be raised linearly under the drive of the lifting mechanism 6. The clamping mechanism 4 located on the lower side moves linearly upwards and downwards, allowing the steel strand to be tested. The dual clamping design of the first jaw clamp 403 and the second jaw clamp 4010 increases the clamping area of ​​the steel strand, increasing the radial force while reducing the possibility of the steel strand being cut. This effectively prevents the steel strand from slipping or falling off, making the testing process more reasonable and stable. Meanwhile, the protective frame 7 is positioned around the main equipment 1. During testing, the output of the reduction motor 803 drives the pinion 804 to rotate, which in turn drives the two arc-shaped racks 805 to move, causing the two arc-shaped baffles 802 to move in opposite directions. The two arc-shaped baffles 802 close the observation port 701. Under the protection of the protective frame 7 and the two arc-shaped baffles 802, the steel strand is prevented from breaking and flying away, protecting the safety of the personnel and the testing equipment, thus avoiding economic losses.

[0067] In a preferred embodiment, the support mechanism 5 includes a straight rod 501, a first corner sleeve 502, and a second corner sleeve 503. Four straight rods 501, first corner sleeves 502, and second corner sleeves 503 are provided. Each straight rod 501 is fixedly connected to the top of the base plate 201 and extends upward through the protective shell 202. Each first corner sleeve 502 is slidably connected to the surface of the corresponding straight rod 501. The mounting platform 3 located on the lower side is fixedly connected between the four first corner sleeves 502. Each second corner sleeve 503 is fixedly connected to the top of the corresponding straight rod 501. The mounting platform 3 located on the upper side is fixedly connected between the four second corner sleeves 503.

[0068] In a specific embodiment of the present invention, the straight rods 501, the first corner sleeves 502, and the second corner sleeves 503 are distributed around the mounting platform 3. The first corner sleeves 502 are located at the four corners of the lower mounting platform 3, and the second corner sleeves 503 are located at the four corners of the upper mounting platform 3. This can effectively restrict the linear movement of the lower mounting platform 3 and restrict the position of the upper mounting platform 3. At the same time, with the reinforcement of the second corner sleeves 503, the tops of the four straight rods 501 form a whole, which strengthens the overall structural strength and makes it more stable and durable.

[0069] In a preferred embodiment, each clamping mechanism 4 includes:

[0070] The first slide rail 401 is fixedly connected to one side of the two mounting platforms 3 that are close to each other;

[0071] There are two sliding sleeve assemblies 402, both of which are slidably connected to the surface of the first slide rail 401, and both of which are fixedly connected to the bottom of a straight rack 404.

[0072] The first jaw clamp 403 has two symmetrically arranged, which are respectively fixedly connected to the two sets of sliding sleeves 402 on the side close to each other;

[0073] Bearing housing 405 is fixedly connected to one side of two mounting platforms 3 that are close to each other;

[0074] A spur gear 406 is rotatably connected to a bearing housing 405 and meshes with two spur racks 404;

[0075] Hydraulic cylinder 407 is fixedly connected to one side of two mounting platforms 3, and its extended end is fixedly connected to one of the first jaw clamps 403; and

[0076] The reinforcement components are located on the opposite side of the two mounting platforms 3. They are used to strengthen the clamping force on the steel strand and thus prevent slippage and detachment. Each set of reinforcement components includes two second jaw clamps 4010 and two electric push rods 409. The opposite side of the two mounting platforms 3 is provided with mounting grooves 302. The second jaw clamps 4010 are symmetrically slidably connected in the mounting grooves 302. The two electric push rods 409 are symmetrically fixedly connected in the mounting grooves 302. The extended end of each electric push rod 409 is fixedly connected to the corresponding second jaw clamp 4010. The positioning hole 301 is located between the two second jaw clamps 4010. A protective plate 408 is fixedly connected to the mounting groove 302.

[0077] In a specific embodiment of the present invention, the first slide rail 401 consists of a bracket and two rail rods. The first jaw clamp 403 is located between the two rail rods. Each sliding sleeve assembly 402 consists of two hollow sleeves, which slide on the surface of the corresponding rail rod. Each first jaw clamp 403 is connected to a sliding sleeve assembly 402, thereby restricting the first jaw clamp 403 to move stably in a straight line without deviation. The bearing seat 405 is disposed between the first jaw clamp 403 and the mounting platform 3 to support the rotation of the spur gear 406. The two spur racks 404 are symmetrical about the center of the spur gear 406. When one spur rack 404 moves, the other spur rack 404 moves in the opposite direction under the action of the meshing of the spur gear 406. In use, the hydraulic cylinder 40... Driven by 7, the first jaw clamp 403, which is fixedly connected to it, moves towards the steel strand, while the other first jaw clamp 403 moves in the opposite direction under the linkage of the rack 404. By bringing the two first jaw clamps 403 closer together, the steel strand is clamped, achieving the purpose of initially fixing the steel strand. Then, the extension end of the electric push rod 409 pushes the second jaw clamp 4010 to move, so that the two second jaw clamps 4010 come closer together and clamp the steel strand. The first jaw clamp 403 and the second jaw clamp 4010 are located in different clamping directions, so that the clamping area of ​​the steel strand is larger, increasing the radial force of clamping the steel strand, but reducing the possibility of the steel strand being cut, effectively avoiding the situation of the steel strand falling off and slipping, making the test process more reasonable and stable.

[0078] In a preferred embodiment, the lifting mechanism 6 specifically includes:

[0079] There are two ball screws 601, both of which are rotatably connected to the base plate 201 and extend upward through the protective shell 202. A second bevel gear 607 is fixedly connected to the circumferential surface of each of them.

[0080] There are two ball screw sleeves 602, which are fixedly connected to both sides of the mounting platform 3 and are threaded to the circumferential surface of the corresponding ball screw 601.

[0081] The bearing bracket 603 is fixedly connected to the top of the base plate 201;

[0082] A mounting shaft 604 is rotatably connected within a bearing bracket 603 and extends to both sides. Each end of the shaft is fixedly connected to a first bevel gear 606, and each first bevel gear 606 meshes with a corresponding second bevel gear 607.

[0083] The drive assembly is located on the upper side of the base plate 201 and is used to drive the two ball screws 601 to rotate synchronously, thereby driving the screw sleeve 602 to rise and fall. The drive assembly includes a driven bevel gear 605, a servo motor 608 and a driving bevel gear 609. The driven bevel gear 605 is fixedly connected to the circumferential surface of the mounting shaft 604, the servo motor 608 is fixedly connected to the top of the base plate 201, and the driving bevel gear 609 is fixedly connected to the output end of the servo motor 608. The driving bevel gear 609 meshes with the driven bevel gear 605.

[0084] In a specific embodiment of the present invention, the ball screw 601 is located between two straight rods 501 on the same side, and the screw sleeve 602 is fixed to both sides of the mounting platform 3, as shown below. Figure 4 and Figure 5 As shown, the bearing bracket 603, mounting shaft 604, driven bevel gear 605, first bevel gear 606, second bevel gear 607, servo motor 608, and driving bevel gear 609 are all included. The bearing bracket 603 supports the rotation of the mounting shaft 604. In use, the output end of the servo motor 608 drives the driving bevel gear 609 to rotate. The driving bevel gear 609 drives the driven bevel gear 605 to rotate at a reduced speed. The driven bevel gear 605 drives the mounting shaft 604 to rotate, which in turn drives the two first bevel gears 606 to rotate synchronously. Under the meshing action of the first bevel gear 606 and the second bevel gear 607, the two ball screws 601 rotate synchronously, which in turn drives the two screw sleeves 602 to rise and fall synchronously. This controls the mounting platform 3 located on the lower side to rise and fall, thereby achieving the purpose of stretching the steel strand.

[0085] In a preferred embodiment, the closing mechanism 8 specifically includes:

[0086] The second slide rail 801 has two parts. The lower slide rail 801 is fixedly connected to the top of the protective shell 202, and the upper slide rail 801 is fixedly connected to the upper edge of the protective frame 7.

[0087] Two arc-shaped baffles 802 are symmetrically arranged, each slidably connected between two second slide rails 801; and

[0088] The automatic closing assembly has two symmetrically arranged sets, which are used to drive the two arc-shaped baffles 802 to move in opposite directions, thereby closing the observation port 701. Each set of automatic closing assemblies includes a reduction motor 803, a pinion 804 and an arc-shaped rack 805. The reduction motor 803 is fixedly connected to the lower inner wall of the protective shell 202, the pinion 804 is fixedly connected to the output end of the reduction motor 803 and is located on the upper side of the base plate 201, and the arc-shaped rack 805 is fixedly connected to the inner wall of the arc-shaped baffle 802. The pinion 804 meshes with the arc-shaped rack 805.

[0089] In specific embodiments of the present invention, such as Figure 1 , Figure 9 and Figure 10 As shown, two second slide rails 801 are provided and located at the upper and lower ends of the arc-shaped baffle 802, which can restrict the stable sliding of the arc-shaped baffle 802. In use, the output end of the reduction motor 803 drives the pinion 804 to rotate, and the pinion 804 drives the two arc-shaped racks 805 to move, causing the two arc-shaped baffles 802 to move in opposite directions. The two arc-shaped baffles 802 close the observation port 701. Under the protection of the protective frame 7 and the two arc-shaped baffles 802, the situation of steel strand breakage and flying can be prevented, protecting the safety of the staff and the test equipment, avoiding economic losses. Preferably, both the protective frame 7 and the arc-shaped baffles 802 have uniformly distributed light-transmitting holes on their surfaces, and the opening shapes of the protective frame 7 and the arc-shaped baffles 802 are different, allowing for safe observation of the test situation from the outside, making it more convenient to use.

[0090] Preferably, the servo motor 608, the geared motor 803, and the hydraulic cylinder 407 are all electrically connected to the host device 1. The host device 1 can control the start and stop of the servo motor 608, the geared motor 803, and the hydraulic cylinder 407. The specific method of the host device 1 to calculate the test data is existing technology and will not be described in detail in this solution.

[0091] The working principle or process of the steel strand testing machine provided by this invention is as follows: During use, the two ends of the steel strand pass through two positioning holes 301 and extend outwards. Then, on each mounting platform 3, the extended end of the hydraulic cylinder 407 pushes the first jaw clamp 403, which is fixedly connected to it, to move. Under the action of the spur gear 406, the two spur racks 404 move in opposite directions, thereby causing the two first jaw clamps 403 to move in opposite directions, clamping the steel strand. Simultaneously, the extended end of the electric push rod 409 pushes the second jaw clamp 4010 to move, bringing the two second jaw clamps 4010 closer together to clamp the steel strand. The second jaw clamps 4010 and the first jaw clamps 403 are located in different directions. The mounting platform 3 on the upper side is fixed in position, while the mounting platform 3 on the lower side can be linearly raised and lowered under the drive of the lifting mechanism 6, allowing the lower side... The clamping mechanism 4 follows the linear lifting and lowering to test the steel strand. Through the dual clamping design of the first jaw clamp 403 and the second jaw clamp 4010, the clamping area of ​​the steel strand is larger, increasing the radial force of clamping the steel strand, while reducing the possibility of the steel strand being cut, effectively preventing the steel strand from slipping off. The test process is more reasonable and stable. At the same time, the protective frame 7 is set around the main equipment 1. During the test, the output end of the reduction motor 803 drives the pinion 804 to rotate. The pinion 804 drives the two arc-shaped racks 805 to move, causing the two arc-shaped baffles 802 to move in opposite directions. The two arc-shaped baffles 802 close the observation port 701. Under the protection of the protective frame 7 and the two arc-shaped baffles 802, the steel strand can be prevented from breaking and flying away, improving the life safety of the staff, protecting the test equipment, and avoiding economic losses.

[0092] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A steel strand testing machine, comprising: Host device (1); The base (2) is composed of a base plate (201) and a protective shell (202), wherein the protective shell (202) is fixedly connected to the top of the base plate (201); Its characteristic is that it further includes: Mounting platform (3) has two symmetrically arranged, and a support mechanism (5) is provided between it and the base (2). The mounting platform (3) located on the upper side is fixedly set on the support mechanism (5), and the mounting platform (3) located on the lower side is movable on the support mechanism (5). A positioning hole (301) is provided at the center of each. The clamping mechanism (4) has two sets, which are symmetrically arranged between the two mounting platforms (3) and are used to clamp the two sides of the steel strand. The lifting mechanism (6) is mounted on the base (2) and is lifted by driving the mounting platform (3) located on the lower side, thereby achieving the purpose of stretching the steel strand. A protective frame (7), which is fixedly connected to the top of the protective shell (202), has an observation port (701) on one side; and A closing mechanism (8), which is located inside the protective frame (7), is used to close the observation port (701) to prevent the broken steel strand from being ejected and shot out.

2. The steel strand testing machine according to claim 1, characterized in that, The support mechanism (5) includes a straight rod (501), a first corner sleeve (502), and a second corner sleeve (503). There are four straight rods (501), four first corner sleeves (502), and four second corner sleeves (503). Each straight rod (501) is fixedly connected to the top of the base plate (201) and extends upward through the protective shell (202). Each first corner sleeve (502) is slidably connected to the surface of the corresponding straight rod (501). The mounting platform (3) located on the lower side is fixedly connected between the four first corner sleeves (502). Each second corner sleeve (503) is fixedly connected to the top of the corresponding straight rod (501). The mounting platform (3) located on the upper side is fixedly connected between the four second corner sleeves (503).

3. A steel strand testing machine according to claim 2, characterized in that, Each clamping mechanism (4) includes: The first slide rail (401) is fixedly connected to one side of the two mounting platforms (3) that are close to each other; There are two sliding sleeve assemblies (402), both of which are slidably connected to the surface of the first slide rail (401), and both of which are fixedly connected to a straight rack (404) at their bottom. The first jaw clamp (403) has two symmetrically arranged parts, which are respectively fixedly connected to the two sets of sliding sleeves (402) on the side close to each other; The bearing housing (405) is fixedly connected to one side of the two mounting platforms (3) that are close to each other; A spur gear (406) is rotatably connected in a bearing housing (405) and meshes with two spur racks (404); A hydraulic cylinder (407) is fixedly connected to one side of two mounting platforms (3) close to each other, and its extended end is fixedly connected to one of the first jaw clamps (403); and The reinforcement component, which is located on one side of the two mounting platforms (3) away from each other, is used to strengthen the clamping force on the steel strand and thus prevent it from slipping off.

4. A steel strand testing machine according to claim 3, characterized in that, Each set of the reinforcement components includes two second jaw clamps (4010) and two electric push rods (409). The two mounting platforms (3) are provided with mounting grooves (302) on opposite sides. The second jaw clamps (4010) are symmetrically slidably connected in the mounting grooves (302). The two electric push rods (409) are symmetrically fixedly connected in the mounting grooves (302). The extended end of each electric push rod (409) is fixedly connected to the corresponding second jaw clamp (4010). The positioning hole (301) is located between the two second jaw clamps (4010). A protective plate (408) is fixedly connected to the mounting groove (302).

5. A steel strand testing machine according to claim 4, characterized in that, The lifting mechanism (6) includes: There are two ball screws (601), both of which are rotatably connected to the base plate (201) and extend upward through the protective shell (202), and a second bevel gear (607) is fixedly connected to their circumferential surface. Two ball screw sleeves (602) are provided, which are fixedly connected to both sides of the mounting platform (3) and are respectively threaded to the circumferential surface of the corresponding ball screw (601); The bearing bracket (603) is fixedly connected to the top of the base plate (201); A mounting shaft (604) is rotatably connected within a bearing bracket (603) and extends to both sides. Each end of the shaft is fixedly connected to a first bevel gear (606), and each first bevel gear (606) meshes with a corresponding second bevel gear (607). The drive assembly is located on the upper side of the substrate (201) and is used to drive the two ball screws (601) to rotate synchronously, thereby driving the screw sleeve (602) to rise and fall.

6. A steel strand testing machine according to claim 5, characterized in that, The drive assembly includes a driven bevel gear (605), a servo motor (608), and a driving bevel gear (609). The driven bevel gear (605) is fixedly connected to the circumferential surface of the mounting shaft (604). The servo motor (608) is fixedly connected to the top of the base plate (201). The driving bevel gear (609) is fixedly connected to the output end of the servo motor (608). The driving bevel gear (609) meshes with the driven bevel gear (605).

7. A steel strand testing machine according to claim 6, characterized in that, The closing mechanism (8) includes: The second slide rail (801) has two parts. The second slide rail (801) located on the lower side is fixedly connected to the top of the protective shell (202), and the second slide rail (801) located on the upper side is fixedly connected to the upper edge of the protective frame (7). Two arc-shaped baffles (802) are symmetrically arranged, each slidably connected between two second slide rails (801); and The automatic closing assembly has two symmetrically arranged sets, which are used to drive two arc-shaped baffles (802) to move in opposite directions, thereby closing the observation port (701).

8. A steel strand testing machine according to claim 7, characterized in that, Each of the automatic closing components includes a geared motor (803), a pinion (804), and an arc-shaped rack (805). The geared motor (803) is fixedly connected to the lower inner wall of the protective shell (202). The pinion (804) is fixedly connected to the output end of the geared motor (803). The pinion (804) is located on the upper side of the base plate (201). The arc-shaped rack (805) is fixedly connected to the inner wall of the arc-shaped baffle (802). The pinion (804) meshes with the arc-shaped rack (805).

9. A steel strand testing machine according to claim 8, characterized in that, Both the protective frame (7) and the arc-shaped baffle (802) have uniformly distributed light-transmitting holes on their surfaces, and the opening shapes of the protective frame (7) and the arc-shaped baffle (802) are different.

10. A steel strand testing machine according to claim 9, characterized in that, The servo motor (608), the geared motor (803), and the hydraulic cylinder (407) are all electrically connected to the host device (1).

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