Testing device for anchoring performance of detachable parallel steel wire suspender

Abstract

The utility model discloses an anchoring performance test device for a detachable parallel steel wire suspender, which belongs to the technical field of suspender anchoring and comprises a test bench, a loading test rack is arranged on the test bench, and a first anchoring locking part and a second anchoring locking part which are oppositely arranged are arranged on the loading test rack. The loading jacking mechanism is connected with the second anchoring locking part and drives the second anchoring locking part to linearly reciprocate relative to the first anchoring locking part, and the first anchoring locking part and the second anchoring locking part are detachably locked and connected with the two ends of the to-be-tested detachable and replaceable parallel steel wire suspender respectively. The device for testing the anchoring performance of the replaceable parallel steel wire suspender can effectively evaluate and test the anchoring performance of the replaced parallel steel wire suspender.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of suspender anchoring test, specifically relates to a kind of dismantling and replacing parallel wire suspender anchoring performance test device. BACKGROUND

[0002] Parallel wire suspender is widely used in large structures such as bridges, as an important component to transfer load. However, with the passage of time and environmental factors, the suspender may have problems such as fatigue, corrosion, affecting the safety of the structure. Therefore, it is necessary to regularly maintain and replace the suspender. During the dismantling and replacing process of the suspender, detecting the anchoring performance of the suspender after being cut off and replaced is one of the key factors. The anchoring performance test of the parallel wire suspender after being cut off and replaced is used to study or evaluate the safety and reliability of the related suspender. Currently, there is a lack of effective test device for anchoring performance test of dismantling and replacing parallel wire suspender, which limits the accurate evaluation and research of the anchoring performance of the suspender after being cut off and replaced. SUMMARY

[0003] The utility model aims at overcoming the deficiencies in the prior art, and provides a kind of dismantling and replacing parallel wire suspender anchoring performance test device, which can effectively evaluate and test the anchoring performance of the parallel wire suspender after being replaced.

[0004] To achieve the above-mentioned purpose, the utility model is implemented by using the following technical scheme:

[0005] The utility model provides a kind of dismantling and replacing parallel wire suspender anchoring performance test device, including test table, the test table is equipped with loading test frame, the loading test frame is equipped with the first anchoring locking portion and the second anchoring locking portion of relative arrangement, and is equipped with the loading jacking mechanism connected with the second anchoring locking portion and driving second anchoring locking portion linear reciprocating movement relative to the first anchoring locking portion, the first anchoring locking portion and the second anchoring locking portion are respectively detachably locked and connected with the two ends of the parallel wire suspender to be tested for dismantling and replacing.

[0006] Further, the first anchoring locking portion includes a first limiting plate and a first locking assembly, the first limiting plate is provided with a first through hole for limiting the parallel wire suspender to be tested for dismantling and replacing, the first locking assembly includes two locking blocks matched with each other, and a semicircular groove of the same size is formed in the abutting surface of the two locking blocks, and a first locking hole is formed for the anchor head of the parallel wire suspender to be tested for dismantling and replacing.

[0007] Further, the second anchoring and locking part comprises a second limiting plate and a second locking assembly, the second limiting plate is provided with a second through hole for limiting the parallel wire rod to be tested, the second locking assembly comprises two locking blocks which are matched and connected to each other, and a semicircular groove with the same size is formed in the abutting surface of each locking block, and the two semicircular grooves together form a second locking hole for the parallel wire rod to be tested.

[0008] Further, the first locking assembly further comprises a first locking support groove for accommodating the locking block and matching the shape of the locking block, and the second locking assembly further comprises a second locking support groove for accommodating the locking block and matching the shape of the locking block.

[0009] Further, the diameter of the first through hole is the same as the diameter of the parallel wire rod to be tested and smaller than the diameter of the anchor head of the parallel wire rod to be tested, and the diameter of the first locking hole is the same as the diameter of the anchor head of the parallel wire rod to be tested.

[0010] The diameters of the second through hole and the second locking hole are the same as the diameter of the parallel wire rod to be tested and smaller than the diameter of the anchor head of the parallel wire rod to be tested.

[0011] Further, the loading and jacking mechanism is arranged on the loading test frame along the linear extension direction of the first anchoring and locking part and the second anchoring and locking part.

[0012] Further, the loading and jacking mechanism comprises a hydraulic jack and a transmission assembly, the transmission assembly comprises a transmission base fixedly connected to the piston rod of the hydraulic jack and a plurality of transmission rods, one end of each transmission rod is uniformly and evenly arranged on the transmission base along the circumference of the piston rod, and the other end of each transmission rod extends along the linear extension direction of the first anchoring and locking part and the second anchoring and locking part and is fixedly connected to the second through hole of the second limiting plate.

[0013] Further, the loading and jacking mechanism further comprises a displacement sensor, a pressure sensor and a PLC computer controller, the PLC computer controller is electrically connected to the hydraulic jack, the displacement sensor and the pressure sensor, respectively; the displacement sensor and the pressure sensor are connected to the hydraulic jack and transmit the measured displacement data and pressure data to the PLC computer controller.

[0014] Further, the loading test frame is further provided with a camera assembly, the camera assembly comprises a camera and a transmission screw, the transmission screw is arranged in parallel and at intervals along the linear extension direction of the first anchoring and locking part and the second anchoring and locking part, and the camera is arranged on the transmission screw and faces the parallel wire rod to be tested.

[0015] Further, the loading test frame is further provided with a protective ring, which is arranged between the first anchoring locking part and the second anchoring locking part, and is used for penetrating the middle part of the parallel wire suspension boom to be tested.

[0016] Compared with the prior art, the device has the advantages that: the device can comprehensively test the static load anchoring performance and fatigue performance of the replaced parallel wire suspension boom, the fixed ends and the tensile loading of the boom can be realized by using the test table, the loading test frame, the first anchoring locking part, the second anchoring locking part and the loading jacking mechanism and other components, the loading force and displacement can be accurately controlled by cooperation of the hydraulic jack and the transmission assembly, the test data can be monitored and recorded in real time by using the integrated displacement sensor, the pressure sensor and the PLC computer controller, the reliability of different anchoring state parameters can be evaluated, important reference for design and maintenance of the boom is provided, and the safety and durability of the bridge structure are improved to a certain extent. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structure schematic view of a parallel wire suspension boom anchoring performance test device according to an embodiment of the present application.

[0018] Figure 2 is a structure schematic view of a parallel wire suspension boom anchoring performance test device according to an embodiment of the present application.

[0019] Figure 3 is a sectional view of a parallel wire suspension boom anchoring performance test device according to an embodiment of the present application.

[0020] In the figure: 1, test table; 2, loading test frame; 3, first limiting plate; 4, first locking assembly; 5, locking block; 6, first through hole; 7, first locking hole; 8, second limiting plate; 9, second locking assembly; 10, second through hole; 11, second locking hole; 12, first locking support groove table; 13, second locking support groove table; 14, hydraulic jack; 15, transmission base; 16, transmission rod; 17, camera; 18, transmission screw; 19, protective ring; 20, protective cover; 21, sleeve; 22, boom. DETAILED DESCRIPTION

[0021] The present application will be further described below in conjunction with the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and cannot be used to limit the protection scope of the present application.

[0022] In the description of the utility model, it needs to be understood that, the orientation or position relation indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relation based on the shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore can not be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0023] In the description of the utility model, it needs to be understood that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, can be electrically connected, can be directly connected, can be indirectly connected through an intermediate medium, and can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0024] In the anchoring structure such as bridge, the suspender is often disassembled and replaced, and the suspender is high-strength steel wire, also called parallel steel wire, the test device provided by the embodiment of the application is used for testing the anchoring performance of the anchoring end of the replaced parallel steel wire suspender, mainly including static load anchoring performance and fatigue performance. Wherein, a complete suspender has anchor heads on both sides, but the suspender is cut off from the middle when disassembled and replaced from the bridge, so that the disassembled and replaced parallel steel wire suspender has only one half or one end with an anchor head, and the other end cut off is fastened by a small specification anchor head for loading, and then the test device is used to study whether the steel wire is pulled off or the anchor head is pulled off when the anchor head of the disassembled suspender is pulled.

[0025] As Figure 1 , Figure 2 and Figure 3As shown, the utility model embodiment provides a kind of dismantling and replacing parallel wire suspender anchoring performance test device, including test table 1, loading test frame 2 is configured on test table 1, first anchoring locking portion and second anchoring locking portion are configured with opposite on loading test frame 2, and loading jacking mechanism connected with second anchoring locking portion and driving second anchoring locking portion linear reciprocating movement relative to first anchoring locking portion, first anchoring locking portion and second anchoring locking portion are respectively detachably locked and connected with the two ends of the parallel wire suspender to be tested for dismantling and replacing.

[0026] In the embodiment, the first anchoring locking portion includes a first limiting plate 3 and a first locking assembly 4. The first limiting plate 3 is provided with a first through hole 6 for limiting the passage of the parallel wire suspender to be tested for dismantling and replacing. The first locking assembly 4 includes two locking blocks 5 that are matched and abutted against each other. Half-circular grooves of the same size are respectively formed in the abutted surfaces of the two locking blocks 5, and the half-circular grooves together form a first locking hole 7 for passing the anchor head of the parallel wire suspender to be tested for dismantling and replacing.

[0027] The second anchoring locking portion includes a second limiting plate 8 and a second locking assembly 9. The second limiting plate 8 is provided with a second through hole 10 for limiting the passage of the parallel wire suspender to be tested for dismantling and replacing. The second locking assembly includes two locking blocks 5 that are matched and abutted against each other. Half-circular grooves of the same size are respectively formed in the abutted surfaces of the two locking blocks 5, and the half-circular grooves together form a second locking hole 11 for passing the parallel wire suspender to be tested for dismantling and replacing.

[0028] In the embodiment, the first locking assembly 4 further includes a first locking support groove 12 for accommodating the locking block 5 and matching the shape of the locking block 5. The first locking support groove 12 is arranged on the first limiting plate 3. The second locking assembly further includes a second locking support groove 13 for accommodating the locking block 5 and matching the shape of the locking block 5. The second locking support groove 13 is arranged on the second limiting plate 8.

[0029] Specifically, the two matched locking blocks 5 are in the shape of a cylinder. The first locking support groove 12 and the second locking support groove 13 are both in the shape of a half-circular groove. In addition, the locking block 5 can also be in the shape of a square, and the first locking support groove 12 and the second locking support groove 13 are both in the shape of a square groove.

[0030] In order to better fasten the anchor head, a locking ring or a matching sleeve can be further arranged around the locking block 5, so as to avoid the separation or misplacement of the two locking blocks 5 in extreme cases.

[0031] In the embodiment, the diameter of the first through hole 6 is the same as the diameter of the parallel wire suspender to be tested for dismantling and replacing, and smaller than the diameter of the anchor head of the parallel wire suspender to be tested for dismantling and replacing. The diameter of the first locking hole 7 is the same as the diameter of the anchor head of the parallel wire suspender to be tested for dismantling and replacing.

[0032] The diameters of the second through hole 10 and the second locking hole 11 are the same as the diameter of the parallel wire rod to be tested and replaced, and smaller than the diameter of the anchor head of the parallel wire rod to be tested and replaced.

[0033] In this embodiment, the loading lifting mechanism is disposed on the loading test frame 2 along the straight extension direction of the first anchoring locking part and the second anchoring locking part.

[0034] The loading and lifting mechanism includes a hydraulic jack 14 and a transmission assembly. The transmission assembly includes a transmission base 15 fixedly connected to the piston rod of the hydraulic jack 14 and a plurality of transmission rods 16. One end of the plurality of transmission rods 16 is evenly spaced on the transmission base 15 along the circumference of the piston rod, and the other end extends along the straight extension direction of the first anchoring locking part and the second anchoring locking part and is evenly spaced and fixedly connected to the second through hole 10 of the second limiting plate 8 in the circumference direction.

[0035] The number of transmission rods 16 can be selected as two or three, which is conducive to saving costs and making reasonable use of structural layout space.

[0036] The loading and lifting mechanism also includes a displacement sensor, a pressure sensor, and a PLC computer controller. The PLC computer controller is electrically connected to the hydraulic jack 14, the displacement sensor, and the pressure sensor, respectively. The displacement sensor and the pressure sensor are connected to the hydraulic jack 14 and transmit the measured displacement and pressure data to the PLC computer controller.

[0037] The PLC-controlled loading and lifting mechanism enables real-time monitoring of jack displacement and pressure, ensuring the synchronization and safety of the lifting mechanism. The number of jacks 14 can be set, and their pressure, stroke, and load are all controlled by the PLC computer. Displacement and pressure sensors collect data and transmit it to the PLC control device. The PLC computer is configured through a human-machine interface, enabling automatic control of the electric hydraulic pump station and jacks 14. It also features real-time display of jack displacement, maximum, minimum, and average pressure data, as well as pressure (load) and displacement alarm functions, improving lifting safety. Furthermore, it should be noted that the loading and lifting mechanism can also utilize other lifting systems or electrical components, as long as they can provide the tension required for boom extension and movement, to achieve the purpose of loading testing.

[0038] In the embodiment, the loading test frame 2 is further provided with a camera assembly, which comprises a camera 17 and a transmission screw rod 18. The transmission screw rod 18 is arranged in parallel and at intervals along the linear extension direction of the first anchoring locking part and the second anchoring locking part. The camera 17 is arranged on the transmission screw rod 18 and is movable reciprocally and faces the parallel steel wire hanger to be tested and replaced. The camera 17 and the transmission screw rod 18 are respectively connected with the PLC computer controller electric signal control and are operated under the control of the controller.

[0039] In the embodiment, the loading test frame 2 is further provided with a protective ring 19, which is arranged between the first anchoring locking part and the second anchoring locking part and is used for penetrating the middle part of the parallel steel wire hanger to be tested and replaced.

[0040] The loading test frame 2 is further provided with a guide rail extending along the loading and stretching direction, which is used for connecting and assisting in guiding the second limiting plate 8 to move linearly and reciprocally.

[0041] In addition, the loading test frame 2 can be further provided with a protective cover 20, which is used for protecting the operator from the splashing injury. In addition, the loading test frame 2 is provided with an emergency stop button, which is used for stopping the test rapidly in an emergency. In addition, the whole test device is provided with an external power supply.

[0042] The above only describes the preferred embodiments of the present application, and it should be pointed out that, for the ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and deformations can be made, and these improvements and deformations should be regarded as the protection scope of the present application.

Claims

1. A device for testing anchorage performance of a parallel wire sling, comprising a test bed, characterized in that, The test bench is provided with a loading test frame, the loading test frame is provided with oppositely arranged first and second anchoring locking parts, and a loading jacking mechanism connected with the second anchoring locking part and driving the second anchoring locking part to move linearly relative to the first anchoring locking part, and the first and second anchoring locking parts are respectively detachably locked and connected to the two ends of the parallel steel wire sling to be tested.

2. The device for testing anchorage performance of a parallel wire rod according to claim 1, wherein The first anchoring locking part comprises a first limiting plate and a first locking assembly, the first limiting plate is provided with a first through hole for limiting the parallel steel wire sling to be tested, the first locking assembly comprises two oppositely butted locking blocks, and a semicircular groove of the same size is formed in the butting surface of each locking block to form a first locking hole for the anchor head of the parallel steel wire sling to be tested.

3. The device for testing anchorage performance of a parallel wire rod according to claim 2, wherein The second anchoring locking part comprises a second limiting plate and a second locking assembly, the second limiting plate is provided with a second through hole for limiting the parallel steel wire sling to be tested, the second locking assembly comprises two oppositely butted locking blocks, and a semicircular groove of the same size is formed in the butting surface of each locking block to form a second locking hole for the parallel steel wire sling to be tested.

4. The device for testing anchorage performance of a parallel wire rod according to claim 3, wherein The first locking assembly further comprises a first locking support groove matching the shape of the locking block, and the second locking assembly further comprises a second locking support groove matching the shape of the locking block.

5. The device for testing anchorage performance of a parallel wire rod according to claim 3, wherein The diameter of the first through hole is the same as that of the parallel steel wire sling to be tested and smaller than that of the anchor head of the parallel steel wire sling to be tested, and the diameter of the first locking hole is the same as that of the anchor head of the parallel steel wire sling to be tested. The diameters of the second through hole and the second locking hole are the same as that of the parallel steel wire sling to be tested and smaller than that of the anchor head of the parallel steel wire sling to be tested.

6. The device for testing anchorage performance of a parallel wire rod according to claim 3, wherein The loading jacking mechanism is arranged on the loading test frame along the linear extension direction of the first and second anchoring locking parts.

7. The device for testing anchorage performance of a parallel wire rod according to claim 6, wherein The loading jacking mechanism comprises a hydraulic jack and a transmission assembly, the transmission assembly comprises a transmission base fixedly connected with the piston rod of the hydraulic jack and a plurality of transmission rods, one end of each transmission rod is uniformly and evenly arranged on the transmission base along the circumference of the piston rod, and the other end is arranged on the second limiting plate along the linear extension direction of the first and second anchoring locking parts and is fixedly connected with the second through hole.

8. The device for testing anchorage performance of a parallel wire rod according to claim 7, wherein The loading jacking mechanism further comprises a displacement sensor, a pressure sensor and a PLC computer controller, the PLC computer controller is electrically connected with the hydraulic jack, the displacement sensor and the pressure sensor, the displacement sensor and the pressure sensor are connected with the hydraulic jack and transmit the measured displacement data and pressure data to the PLC computer controller.

9. The device for testing anchorage performance of a parallel wire rod according to claim 1, wherein The loading test frame is further provided with a camera assembly, which comprises a camera and a transmission screw rod, the transmission screw rod is arranged in parallel and at intervals along the linear extension direction of the first anchoring locking part and the second anchoring locking part, and the camera is arranged on the transmission screw rod and is movable reciprocally and faces the parallel steel wire hanger to be tested.

10. The device for testing anchorage performance of a parallel wire rod according to claim 1, wherein The loading test frame is further provided with a protective ring, which is arranged between the first anchoring locking part and the second anchoring locking part and is used for penetrating the middle part of the parallel steel wire hanger to be tested.

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