Steel strand static load anchoring testing machine

Abstract

The utility model relates to the technical field of static load anchoring tests, in particular to a steel strand static load anchoring testing machine which is convenient to install, reduces working steps, enables a steel strand to be aligned with hole sites of anchorage devices at the two ends, reduces test errors, improves the accuracy of detection results and improves the stability of the testing machine during working. Comprising two tensioning ends, a plurality of connecting columns, two sets of supporting legs, a pulling assembly, an alignment adjusting assembly and a protection assembly, the two tensioning ends are connected through the multiple connecting columns, the two supporting legs are installed at the bottoms of the tensioning ends, the pulling assembly is installed below the position between the two tensioning ends, the alignment adjusting assembly is installed above the pulling assembly, and the protection assembly is installed above the alignment adjusting assembly. A protection assembly is installed outside the position between the two tensioning ends.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of static load anchorage test, especially to a steel strand static load anchorage testing machine. BACKGROUND

[0002] The static load anchorage testing machine is mainly used for the static load anchorage performance test of steel strand-anchor in the infrastructure construction of railway bridges, water conservancy and power, etc. With the development of science and technology, the engineering quality and technical requirements are becoming more and more strict. The anchor assembly used in the post-tensioned stress concrete members of bridges, highways and stadiums is not only a single-hole anchor ring, but also a multi-hole anchor ring with four holes, six holes or even dozens of holes. The static load anchorage testing machine disclosed in the prior art announcement No. CN215115549U comprises a machine body, two tensioning ends provided at the two ends of the machine body, an anchor pad provided on each tensioning end, a through hole provided on the anchor pad, a sleeve provided on the inner wall of the through hole, and the sleeves provided on the anchor pads at the two ends are oppositely arranged. However, during the test, the installation of the anchor and the prestressed tendon needs to be performed manually, and the steel strand needs to be installed between the two tensioning ends. The installation process is complicated, which leads to poor convenience of the equipment. SUMMARY

[0003] To solve the above technical problems, the utility model provides a steel strand static load anchorage testing machine which is convenient to install, reduces the working steps, can keep the holes of the steel strand and the anchors at the two ends aligned, reduces the test error, improves the accuracy of the test results, and improves the stability of the testing machine during work.

[0004] The utility model relates to a steel strand static load anchorage testing machine, which comprises two tensioning ends, a plurality of connecting columns, two groups of supporting legs, a pulling assembly, an alignment adjusting assembly and a protection assembly. The two tensioning ends are connected by the plurality of connecting columns. The tensioning end bottom is provided with two supporting legs. The pulling assembly is installed below the two tensioning ends. The alignment adjusting assembly is installed above the pulling assembly. The protection assembly is installed outside the two tensioning ends. One end of the steel strand sample to be tested is inserted through the left tensioning end. The steel strand sample can be pulled to the tensioning end on the other side by the pulling assembly, which reduces the working steps. The alignment adjusting assembly can keep the holes of the steel strand and the anchors at the two ends aligned, which reduces the test error and improves the accuracy of the test results. At the same time, the middle part of the testing machine can be supported and lifted, which effectively improves the stability of the testing machine during work, reduces the vibration during work, and facilitates the improvement of the test accuracy.

[0005] Preferably, the pulling assembly comprises a threaded column, a transmission, a moving seat, an electric telescopic rod, a fixed cylinder, a stretching cylinder and a plurality of electric push rods, the threaded column is rotatably installed between the lower parts of the two tensioning ends, the right side wall of the threaded column is connected with the output end of the transmission through the tensioning end, the input end of the transmission is provided with a motor, the middle part of the moving seat is screwedly installed on the outer wall of the threaded column, the front and rear ends of the moving seat are slidably installed on the outer walls of the two connecting columns, the top middle part of the moving seat is fixedly installed with the electric telescopic rod, the top of the electric telescopic rod is installed with the fixed cylinder, the fixed cylinder is rotatably installed with the stretching cylinder inside, a plurality of pulling holes are formed in the stretching cylinder, the diameter of the pulling hole is greater than the diameter of the steel strand, the electric push rods are installed on the outer wall of the stretching cylinder at positions corresponding to the pulling holes, the telescopic ends of the electric push rods are slidably input into the pulling holes and are provided with clamping columns; after the steel strand sample to be detected is inserted into the left tensioning end, the electric telescopic rod is started to adjust the height of the fixed cylinder, so that the pulling hole is aligned with the steel strand, the steel strand is conveniently inserted, the electric push rod is started to fix the steel strand, the motor is started to drive the threaded column to rotate through the transmission, and the moving seat is driven to move rightwards on the connecting column, so that the steel strand sample to be detected is pulled to the right tensioning end, the installation is convenient, and the working efficiency is improved.

[0006] Preferably, the pulling assembly comprises a threaded column, a transmission, a moving seat, an electric telescopic rod, a fixed cylinder, a stretching cylinder and a plurality of electric push rods, the threaded column is rotatably installed between the lower parts of the two tensioning ends, the right side wall of the threaded column is connected with the output end of the transmission through the tensioning end, the input end of the transmission is provided with a motor, the middle part of the moving seat is screwedly installed on the outer wall of the threaded column, the front and rear ends of the moving seat are slidably installed on the outer walls of the two connecting columns, the top middle part of the moving seat is fixedly installed with the electric telescopic rod, the top of the electric telescopic rod is installed with the fixed cylinder, the fixed cylinder is rotatably installed with the stretching cylinder inside, a plurality of pulling holes are formed in the stretching cylinder, the diameter of the pulling hole is greater than the diameter of the steel strand, the electric push rods are installed on the outer wall of the stretching cylinder at positions corresponding to the pulling holes, the telescopic ends of the electric push rods are slidably input into the pulling holes and are provided with clamping columns; after the steel strand sample to be detected is inserted into the left tensioning end, the electric telescopic rod is started to adjust the height of the fixed cylinder, so that the pulling hole is aligned with the steel strand, the steel strand is conveniently inserted, the electric push rod is started to fix the steel strand, the motor is started to drive the threaded column to rotate through the transmission, and the moving seat is driven to move rightwards on the connecting column, so that the steel strand sample to be detected is pulled to the right tensioning end, the installation is convenient, and the working efficiency is improved.

[0007] Preferably, the alignment adjusting assembly comprises a limiting rotating ring, a gear ring, a driving motor and a driving gear, a supporting rotating groove is formed in the inner wall of the fixed cylinder, the limiting rotating ring is installed on the outer wall of the stretching cylinder, the limiting rotating ring is rotatably installed in the supporting rotating groove, the gear ring is installed on the left outer wall of the stretching cylinder, the driving motor is installed on the top of the fixed cylinder, the output end of the driving motor is installed with the driving gear, and the driving gear is engaged with the gear ring; the driving motor is started to drive the driving gear to rotate, the driving gear drives the stretching cylinder to rotate by a certain angle in cooperation with the gear ring, so as to adjust the angle of the pulling hole, the steel strand is kept aligned with the hole positions of the anchorage devices at two ends, the test error is reduced, and the precision of the detection result is improved.

[0008] Preferably, the multiple support rollers are installed at the bottom of the moving seat, the support columns are installed at the top of the moving seat and at the front and rear ends of the moving seat, the guide sliding sleeves are installed at the top of the support columns, the two guide sliding sleeves are slidably installed on the outer walls of the two upper connecting columns, and the connecting rod is connected between the two guide sliding sleeves; when the moving seat moves, the support rollers slide on the ground, and the moving seat drives the guide sliding sleeves to slide on the connecting columns through the support columns; after the steel strand is pulled, the moving seat moves to the middle of the device, the middle of the device is supported by the moving seat and the support rollers, and the stability of the structure is ensured by the support columns, the guide sliding sleeves and the connecting rod, so that the middle of the test machine is supported and lifted, the stability of the test machine during work is effectively improved, vibration during work is reduced, and the accuracy of the test is improved.

[0009] Preferably, the protection assembly comprises multiple protection fences, a fixed frame, two hinged chains, two protection fence doors and a limiting part, the fixed frame is provided with the protection fences on the left and right sides, the two protection fences are connected with the two tensioning ends respectively, and the protection fence doors are movably installed at the front end of the fixed frame through the two hinged chains.

[0010] Preferably, the limiting part comprises two handles, two fixed seats and two limiting plates, the handles are installed at the front ends of the two protection fence doors away from each other, the fixed seats are installed at the front ends of the two tensioning ends, the limiting plates are slidably installed on the fixed seats, and limiting grooves matched with the limiting plates are formed in the handles.

[0011] Compared with the prior art, the utility model has the advantages that the steel strand sample to be detected is inserted into the left tensioning end, the steel strand sample is pulled to the right tensioning end through the pulling assembly, the working steps are reduced, the steel strand sample is aligned with the holes of the two anchors through the alignment adjusting assembly, the test error is reduced, the accuracy of the detection result is improved, the middle of the test machine is supported and lifted, the stability of the test machine during work is effectively improved, vibration during work is reduced, and the accuracy of the test is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a structural schematic view of the utility model;

[0013] Figure 2 is a partial sectional view of the utility model;

[0014] Figure 3 is a lower three-dimensional structural schematic view of the utility model;

[0015] Figure 4 is the structural schematic view of the support plate and the guide sliding seat mechanism of the utility model;

[0016] Figure 5 is the structural schematic view of the alignment adjustment assembly of the utility model;

[0017] Marked in the drawing: 1, tensioning end; 2, connecting column; 3, supporting leg; 4, threaded column; 5, transmission; 6, moving seat; 7, electric telescopic rod; 8, fixed cylinder; 9, support plate; 10, guide sliding seat; 11, limiting swivel ring; 12, stretching cylinder; 13, gear ring; 14, driving motor; 15, driving gear; 16, electric push rod; 17, supporting roller; 18, supporting column; 19, guide sliding sleeve; 20, connecting rod; 21, protective fence; 22, fixed frame; 23, hinged chain; 24, protective fence door; 25, pull handle; 26, fixed seat; 27, limiting insert plate. DETAILED DESCRIPTION

[0018] In order to facilitate understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. The utility model can be realized in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0019] Example 1

[0020] As Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, the two tensioning ends 1 are connected by a plurality of connecting columns 2, the bottom of the tensioning end 1 is provided with two supporting legs 3, the screw column 4 is rotatably installed between the lower parts of the two tensioning ends 1, the right side wall of the screw column 4 is connected with the output end of the transmission 5 through the tensioning end 1, the input end of the transmission 5 is provided with a motor, the middle part of the moving seat 6 is screwed on the outer wall of the screw column 4, the front and rear ends of the moving seat 6 are slidably installed on the outer walls of the lower two connecting columns 2, the top middle part of the moving seat 6 is fixedly installed with an electric telescopic rod 7, the top of the electric telescopic rod 7 is provided with a fixed cylinder 8, the fixed cylinder 8 is rotatably installed with a stretching cylinder 12 inside, a plurality of pulling holes are formed in the stretching cylinder 12, the diameter of the pulling hole is larger than the diameter of the steel strand, the outer wall of the stretching cylinder 12 is provided with an electric push rod 16 at a position corresponding to the pulling hole, the telescopic end of the electric push rod 16 is slidably input into the pulling hole and is provided with a clamping column, a supporting rotating groove is formed in the inner wall of the fixed cylinder 8, a limiting rotating ring 11 is installed on the outer wall of the stretching cylinder 12, the limiting rotating ring 11 is rotatably installed in the supporting rotating groove, a gear ring 13 is installed on the left outer wall of the stretching cylinder 12, a driving motor 14 is installed on the top of the fixed cylinder 8, the output end of the driving motor 14 is provided with a driving gear 15, the driving gear 15 is engaged with the gear ring 13, a plurality of supporting rollers 17 are installed on the bottom of the moving seat 6, supporting columns 18 are installed on the top of the moving seat 6, the top of the supporting column 18 is provided with a guide sliding sleeve 19, the two guide sliding sleeves 19 are slidably installed on the outer walls of the upper two connecting columns 2, and a connecting rod 20 is connected between the two guide sliding sleeves 19.

[0021] After the steel strand sample to be detected is inserted into the left tensioning end 1, the electric telescopic rod 7 is started to adjust the height of the fixed cylinder 8, so that the pulling hole is aligned with the steel strand, which is convenient for insertion, the electric push rod 16 is started to fix the steel strand, the motor is started to drive the screw column 4 to rotate through the transmission 5, so as to drive the moving seat 6 to move rightwards on the connecting column 2, the steel strand sample to be detected is pulled to the right tensioning end 1, which is convenient for installation and is conducive to improving the work efficiency, the driving motor 14 is started to drive the driving gear 15 to rotate, the driving gear 15 cooperates with the gear ring 13 to drive the stretching cylinder 12 to rotate by a certain angle, so as to adjust the angle of the pulling hole, so that the steel strand is kept aligned with the hole positions of the anchorage devices at both ends, the test error is reduced, the precision of the detection result is improved, the moving seat 6 drives the supporting rollers 17 to slide on the ground when moving, at the same time, the moving seat 6 drives the guide sliding sleeves 19 to slide on the connecting columns 2 through the supporting columns 18, after the pulling of the steel strand is completed, the moving seat 6 moves to the middle part of the equipment, the middle part of the equipment is supported by the moving seat 6 and the supporting rollers 17, and the stability of the structure can be ensured by the supporting column 18, the guide sliding sleeve 19 and the connecting rod 20, the middle part of the testing machine is supported and lifted, the stability of the testing machine during work is effectively improved, the vibration during work is reduced, and the accuracy of the test is improved.

[0022] Example 2

[0023] As shown in claim 2, Figure 3 and Figure 4 Based on the embodiment 1, two support plates 9 are symmetrically installed on the outer walls of the front and rear of the fixed cylinder 8, the bottom of the support plate 9 is connected with a guide sliding seat 10, the top of the moving seat 6 is provided with a guide groove corresponding to the position of the guide sliding seat 10, the lower part of the guide sliding seat 10 is slidingly installed in the guide groove, the fixed frame 22 is provided with protective fences 21 on the left and right sides, two protective fences 21 are respectively connected with two tensioning ends 1, the protective fence door 24 is movably installed on the front end of the fixed frame 22 through two groups of hinged chains 23, the two protective fence doors 24 are provided with pull handles 25 on the ends away from each other, the fixed seat 26 is installed on the front end of the two tensioning ends 1, the limiting plug plate 27 is slidingly installed on the fixed seat 26, and the limiting slot matched with the limiting plug plate 27 is arranged on the pull handle 25;

[0024] When the electric telescopic rod 7 drives the fixed cylinder 8 to adjust the height, the fixed cylinder 8 drives the guide sliding seat 10 to slide in the guide groove through the support plate 9, supports and guides the fixed cylinder 8, ensures the stability, can protect during the experiment through the protective fence 21 and the protective fence door 24, prevents danger, pulls the limiting plug plate 27 to slide on the fixed seat 26, makes the limiting plug plate 27 move out in the limiting slot, can make the protective fence door 24 rotate and open through the hinged chain 23, is convenient for internal maintenance, improves the convenience.

[0025] As Figures 1 to 5As shown, the utility model discloses a steel strand static load anchorage testing machine, when working, the steel strand sample of detection is passed through left tension end 1, and the height of fixed cylinder 8 can be adjusted by starting electric telescopic rod 7, and the pull hole is aligned with the steel strand, and the steel strand is fixed by starting electric push rod 16, and the motor drives screw column 4 to rotate through transmission 5, and movable seat 6 is moved to right on connecting column 2, and the steel strand sample of detection is pulled to right tension end 1, when electric telescopic rod 7 pushes fixed cylinder 8 and adjusts height, fixed cylinder 8 is driven to slide in guide groove by support plate 9 and guide sliding seat 10, and fixed cylinder 8 is supported and guided, drive motor 14 is started and drives gear 15 to rotate, and gear 15 and tooth ring 13 are matched and drive stretching cylinder 12 to rotate a certain angle, thereby adjusting the angle of pull hole, and the hole position of steel strand and both ends of anchorage device is kept in alignment, movable seat 6 is slid on the ground by driving support roller 17, and movable seat 6 is slid on connecting column 2 by driving guide sliding sleeve 19 through support column 18, after the steel strand is pulled, movable seat 6 moves to the middle of equipment, and the middle of equipment is supported by movable seat 6 and support roller 17, and the stability of structure is guaranteed by support column 18, guide sliding sleeve 19 and connecting rod 20, and the middle of testing machine is supported and lifted, protective fence 21 and protective fence door 24 can be protected during experiment, prevent danger, and pull limiting insert plate 27 is slid on fixed seat 26, and limiting insert plate 27 is removed in limiting groove, and protective fence door 24 is opened by hinging chain 23 to facilitate internal maintenance.

[0026] The transmission 5 and the drive motor 14 of the utility model are purchased on the market, and the technical personnel in the industry only needs to install and operate according to the attached instruction manual, without the creative labor of the technical personnel in the field.

[0027] The above is only the preferred embodiment of the utility model, and it should be pointed out that, for ordinary technical personnel in the technical field, without departing from the technical principle of the utility model, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection range of the utility model.

Claims

1. A static load anchorage testing machine for steel strands, characterized in that, It includes two tensioning ends (1), multiple connecting columns (2), two sets of support legs (3), a pulling component, an alignment adjustment component, and a protective component. The two tensioning ends (1) are connected by multiple connecting columns (2). Two support legs (3) are installed at the bottom of the tensioning end (1). A pulling component is installed below the two tensioning ends (1). An alignment adjustment component is installed above the pulling component. A protective component is installed outside the two tensioning ends (1).

2. The static load anchorage testing machine for steel strands as described in claim 1, characterized in that, The pulling assembly includes a threaded column (4), a gearbox (5), a moving seat (6), an electric telescopic rod (7), a fixed cylinder (8), a tensioning cylinder (12), and multiple electric push rods (16). The threaded column (4) is rotatably mounted between the lower parts of the two tensioning ends (1). The right side wall of the threaded column (4) passes through the tensioning end (1) and connects to the output end of the gearbox (5). A motor is installed at the input end of the gearbox (5). The moving seat (6) is screwed onto the outer wall of the threaded column (4) in the middle. The front and rear ends of the moving seat (6) are slidably mounted on the lower two... On the outer wall of the connecting column (2), an electric telescopic rod (7) is fixedly installed at the top center of the movable seat (6). A fixed cylinder (8) is installed on the top of the electric telescopic rod (7). A tension cylinder (12) is rotatably installed inside the fixed cylinder (8). Multiple pulling holes are opened inside the tension cylinder (12). The diameter of the pulling holes is larger than the diameter of the steel strand. An electric push rod (16) is installed on the outer wall of the tension cylinder (12) at a position corresponding to the pulling holes. The telescopic end of the electric push rod (16) slides into the pulling hole and is equipped with a clamping column.

3. The static load anchorage testing machine for steel strands as described in claim 2, characterized in that, It also includes two support plates (9) and two guide slides (10). The two support plates (9) are symmetrically installed on the outer walls of the front and rear sides of the fixed cylinder (8). The bottom of the support plate (9) is connected to the guide slide (10). The top of the movable seat (6) is provided with a guide groove corresponding to the position of the guide slide (10). The lower part of the guide slide (10) is slidably installed in the guide groove.

4. The static load anchorage testing machine for steel strands as described in claim 2, characterized in that, The alignment adjustment assembly includes a limiting rotating ring (11), a toothed ring (13), a drive motor (14), and a drive gear (15). A support rotating groove is provided on the inner wall of the fixed cylinder (8). The limiting rotating ring (11) is installed on the outer wall of the stretching cylinder (12). The limiting rotating ring (11) is rotatably installed in the support rotating groove. A toothed ring (13) is installed on the left outer wall of the stretching cylinder (12). The drive motor (14) is installed on the top of the fixed cylinder (8). A drive gear (15) is installed at the output end of the drive motor (14). The drive gear (15) meshes with the toothed ring (13).

5. The static load anchorage testing machine for steel strands as described in claim 2, characterized in that, It also includes multiple support rollers (17), multiple support columns (18), multiple guide sleeves (19) and connecting rods (20). Multiple support rollers (17) are installed at the bottom of the movable seat (6). Support columns (18) are installed at the front and rear ends of the top of the movable seat (6). Guide sleeves (19) are installed on the top of the support columns (18). Two guide sleeves (19) are slidably installed on the outer walls of the two upper connecting columns (2). A connecting rod (20) is connected between the two guide sleeves (19).

6. The static load anchorage testing machine for steel strands as described in claim 1, characterized in that, The protective components include multiple sets of protective fences (21), a fixed frame (22), two sets of hinge chains (23), two protective fence gates (24), and limiting components. Protective fences (21) are installed on the left and right sides of the fixed frame (22). The two protective fences (21) are connected to the two tensioning ends (1) respectively. The protective fence gates (24) are movably installed at the front end of the fixed frame (22) through the two sets of hinge chains (23).

7. A static load anchorage testing machine for steel strands as described in claim 6, characterized in that, The limiting components include two handles (25), two fixed seats (26), and two limiting plates (27). The handles (25) are installed at the ends of the two protective gates (24) that are far apart from each other. The fixed seats (26) are installed at the front ends of the two tensioning ends (1). The limiting plates (27) are slidably inserted into the fixed seats (26). The handles (25) are provided with limiting grooves that match the limiting plates (27).

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