A static load test device for cable pulley assembly

Abstract

This utility model belongs to the technical field of cable pulley assembly testing equipment, and particularly relates to a static load testing device for cable pulley assemblies. It includes a fixed frame and a floating beam. Two end columns are correspondingly provided at the left and right ends of the fixed frame, with a clearance between the two end columns to accommodate the floating beam. A support column and a gantry are provided in the middle of the fixed frame corresponding to the floating beam. The support column is positioned on one side of the floating beam, with a crossbeam for mounting the cable pulley assembly above it and connected to the fixed frame below. A pulley frame is provided on the floating beam for mounting pulleys, and the gantry is fitted over the floating beam. This static load testing device for cable pulley assemblies can be used to test whether the strength and stiffness of the cable pulley assembly meet the requirements. By using a pressure testing mechanism to conduct static load tests on the cable pulley assembly and wire rope, the structural reliability of the cable pulley assembly and wire rope can be effectively verified.

Description

Technical Field

[0001] This utility model belongs to the technical field of cable pulley group testing equipment, and in particular relates to a cable pulley group static load testing device. Background Technology

[0002] The sheave assembly is a crucial component of a cableway system, primarily used to support and guide the wire rope, ensuring smooth steering and transmission during operation. A sheave assembly typically consists of a balance beam, saddle, clamps, and multiple wheels. This structure not only needs to withstand the immense pressure from the wire rope but also maintain stability and safety under various operating conditions. Therefore, the design and manufacture of sheave assemblies must adhere to strict standards, such as GB 12352—2018 "Safety Specifications for Passenger Aerial Cableways," to ensure sufficient safety factors under different conditions such as uniform motion and wind forces. Conventional testing methods for sheave assemblies include static load testing and dynamic load testing. Static load testing involves applying vertical pressure to the sheave assembly in stages and observing its settlement or deformation over time to determine its compressive bearing capacity and structural strength. However, existing static load testing devices are generally designed for specific sheave assemblies, resulting in poor applicability and versatility. In particular, the adjustment of the mechanism for applying vertical pressure is inconvenient, affecting the test results and efficiency. Utility Model Content

[0003] In view of this, the present invention aims to propose a static load testing device for cable pulleys to solve the problem that the pressure application mechanism is inconvenient to adjust in existing static load testing devices, which affects the test results and efficiency.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows: A static load testing device for a cable pulley assembly includes a fixed frame and a floating beam. Two end columns are provided at the left and right ends of the fixed frame, with a clearance between the two end columns to accommodate the floating beam. A support column and a gantry are provided in the middle of the fixed frame corresponding to the floating beam. The support column is positioned on one side of the floating beam, with a crossbeam for mounting the cable pulley assembly above it and connected to the fixed frame below. A pulley frame is provided on the floating beam for mounting pulleys. The gantry is sleeved on the outside of the floating beam and slidably mounted on the fixed frame below. Both the gantry and the end columns are connected to the floating beam above via a pressure testing mechanism.

[0005] Furthermore, the wheel frame is detachably mounted on the floating beam, which has multiple wheel frame mounting positions.

[0006] Furthermore, a traveling frame is provided below the gantry. The traveling frame is an I-shaped structural member, with its web plate connected to the gantry. Traveling wheels are rotatably mounted on both flange plates of the traveling frame. A limiting frame that cooperates with the traveling frame is provided on the fixed frame. The limiting frame has a guide groove for accommodating the traveling frame. A guide hole that cooperates with the traveling wheel is provided on the limiting frame at the position corresponding to the traveling wheel. The guide hole communicates with the guide groove. The length direction of both the guide hole and the guide groove is the same as the sliding direction of the gantry.

[0007] Furthermore, the pressure testing mechanism includes a connecting seat, a telescopic cylinder, and a tension / compression sensor. The connecting seat is connected to a floating beam by a fixing bolt. The floating beam has an elongated hole that mates with the fixing bolt. The length direction of the elongated hole is the same as the sliding direction of the gantry. A locking nut is provided at one end of the fixing bolt that passes through the elongated hole. The fixed end of the telescopic cylinder is connected to the connecting seat, and the telescopic end is connected to the gantry through the tension / compression sensor.

[0008] Furthermore, the end post and the fixing frame form an inverted T-shaped structure.

[0009] Furthermore, the end column includes a horizontal end and a vertical end. The vertical end of the end column is connected to the fixed frame, and the horizontal end is connected to the floating beam through a pressure testing mechanism.

[0010] Furthermore, the crossarm is detachably mounted on the support column, and the support column is provided with an adjustment mechanism for adjusting the position of the crossarm.

[0011] Furthermore, the support column is provided with a mounting seat for installing the crossbeam. There is an assembly gap between the mounting seat and the support column to cooperate with the crossbeam. Both ends of the mounting seat are connected to the support column by connecting bolts.

[0012] Furthermore, the adjustment mechanism includes limiting bolts, with at least four limiting bolts evenly distributed on the left and right ends of the mounting base. One end of the limiting bolt extends into the assembly gap and abuts against the crossbeam, while the other end is threadedly connected to the support column.

[0013] Furthermore, a filler is provided between the limiting bolt and the crossbeam.

[0014] Compared with existing technologies, the static load testing device for cable pulleys described in this utility model has the following advantages: This utility model discloses a static load testing device for cable pulley assemblies, which can be used to test whether the strength and stiffness of the cable pulley assemblies meet the requirements. The cable pulley assemblies are installed and fixed on the supporting columns using a crossbeam, and connected to the pulleys on the floating beam via steel wire ropes. A pressure testing mechanism can then be used to conduct static load tests on the cable pulley assemblies and steel wire ropes, effectively verifying the structural reliability of the cable pulley assemblies and steel wire ropes. Furthermore, by employing a detachable wheel frame and a slidingly adjustable gantry, this static load testing device can adapt to the testing needs of different cable pulley assemblies, exhibiting good versatility. Operators can easily adjust the positions of the wheel frame and gantry to facilitate the installation of different cable pulley assemblies, ensuring that the pressure testing mechanism on the gantry and end columns can be stably connected to the floating beam for testing, thus improving the static load testing effect and efficiency of the cable pulley assemblies. Attached Figure Description

[0015] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1 This is a schematic diagram of the structure of a cable pulley assembly static load testing device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the limiting frame in a static load testing device for a cable pulley assembly according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the gantry structure in a static load testing device for a cable pulley assembly according to an embodiment of this utility model; Figure 4 This is a schematic diagram of the crossarm in a static load testing device for a cable pulley assembly according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a static load testing device for a cable pulley assembly as described in an embodiment of the present invention, when the cable pulley assembly is installed for testing.

[0016] Explanation of reference numerals in the attached figures: 1. Fixed frame; 2. Floating beam; 3. End column; 4. Wheel frame; 5. Support column; 6. Gantry; 7. Pressure testing mechanism; 8. Crossbeam; 9. Mounting seat; 10. Connecting bolt; 11. Traveling frame; 12. Limiting frame; 13. Guide hole; 14. Traveling wheel; 15. Connecting seat; 16. Telescopic cylinder; 17. Tension / compression sensor; 18. Fixed bolt; 19. Long slot; 20. Limiting bolt; 21. Filler; 22. Cable pulley assembly; 23. Steel wire rope; 24. Pulley. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] A static load testing device for cable pulleys, such as Figures 1 to 5 As shown, the device includes a fixed frame 1 and a floating beam 2. The fixed frame 1 has two end posts 3 at its left and right ends, with a gap between the two end posts 3 to accommodate the floating beam 2. The fixed frame 1 has a support column 5 and a gantry 6 in the middle corresponding to the floating beam 2. The support column 5 is set on one side of the floating beam 2. A crossbeam 8 for installing the cable pulley assembly 22 is provided above the support column 5, and it is connected to the fixed frame 1 below. The floating beam 2 has a wheel frame 4 for installing the pulley 24. The gantry 6 is sleeved on the outside of the floating beam 2 and is slidably installed on the fixed frame 1 below. The gantry 6 and the end posts 3 are both connected to the floating beam 2 through a pressure testing mechanism 7.

[0022] Preferably, the wheel frame 4 is detachably mounted on the floating beam 2, and the floating beam 2 has multiple mounting positions for the wheel frame 4. Specifically, pulleys 24 can be mounted on the wheel frame 4. The wheel frame 4 can be mounted on the floating beam 2 by conventional methods such as bolts. For example, the floating beam 2 has a mounting plate for mounting bolts at the bottom. By mounting bolts on both sides of the wheel frame 4 and connecting the bolts to the mounting plate at the bottom of the floating beam 2 with threads, the wheel frame 4 can be clamped and fixed to the floating beam 2, thus achieving convenient assembly of the wheel frame 4 on the floating beam 2. This allows operators to adjust the position of the wheel frame 4 according to actual needs. Those skilled in the art can also choose other suitable methods to install the wheel frame 4 according to actual needs to achieve multi-point detachable assembly of the wheel frame 4, which will not be elaborated here.

[0023] In practical applications, operators can easily adjust the installation position of the wheel frame 4 according to different test requirements of the sheave assembly 22, so as to facilitate the installation of the pulley 24 that cooperates with the sheave assembly 22. In addition, operators can also slide and adjust the position of the gantry 6 when necessary to adjust the position of the pressure testing mechanism 7 at the gantry 6, which is beneficial to improving the static load test effect and test efficiency of the sheave assembly 22.

[0024] Preferably, a traveling frame 11 is provided below the gantry 6. The traveling frame 11 is an I-shaped structural member. The web of the traveling frame 11 is connected to the gantry 6. Traveling wheels 14 are rotatably mounted on both flanges of the traveling frame 11. The fixed frame 1 is provided with a limiting frame 12 that cooperates with the traveling frame 11. The limiting frame 12 is provided with a guide groove for accommodating the traveling frame 11. The limiting frame 12 is provided with a guide hole 13 that cooperates with the traveling wheel 14 at the position corresponding to the traveling wheel 14. The guide hole 13 communicates with the guide groove. The length direction of the guide hole 13 and the guide groove is the same as the sliding direction of the gantry 6.

[0025] In practical applications, the gantry 6 is an inverted U-shaped structure. The floating beam 2 passes through the slot in the gantry 6, and both ends of the gantry 6 are fixed with traveling frames 11. Each flange of each traveling frame 11 has at least two traveling wheels 14 rotatably mounted. The limiting frame 12 can be fixed to the fixed frame 1, and the limiting components 12 correspond one-to-one with the traveling frames 11. During the movement of the gantry 6, the guide grooves on the limiting frame 12 can effectively limit and guide the gantry 6 and the traveling frames 11, ensuring the stability of the gantry 6 during movement. The traveling wheels 14, in conjunction with the guide holes 13, ensure the vertical stability of the gantry 6 after movement, facilitating the subsequent application of force to the sheave assembly 22 by the pressure testing mechanism 7.

[0026] Preferably, the pressure testing mechanism 7 includes a connecting seat 15, a telescopic cylinder 16, and a tension / compression sensor 17. The connecting seat 15 is connected to the floating beam 2 by a fixing bolt 18. The floating beam 2 has an elongated hole 19 that mates with the fixing bolt 18. The length direction of the elongated hole 19 is the same as the sliding direction of the gantry 6. A locking nut is provided at one end of the fixing bolt 18 that passes through the elongated hole 19. The fixed end of the telescopic cylinder 16 is connected to the connecting seat 15, and the telescopic end is connected to the gantry 6 through the tension / compression sensor 17. The telescopic cylinder 16 can be a conventional hydraulic cylinder.

[0027] Specifically, the connecting seat 15 and the telescopic cylinder 16 can be connected by conventional methods such as bolts. The tension and compression sensor 17 and the telescopic cylinder 16, as well as the tension and compression sensor 17 and the gantry 6, can be connected by conventional methods such as threaded connections. Those skilled in the art can choose according to actual needs to achieve the detection of the force between the floating beam 2 and the cable wheel assembly 22. This will not be elaborated here.

[0028] Preferably, the end post 3 and the fixing frame 1 form an inverted T-shape. Compared with other structures, the inverted T-shape structure has higher structural strength, which can ensure that the end post 3 is always stably fixed on the fixing frame 1, and is conducive to improving the test effect of the pressure test mechanism 7 at the end post 3.

[0029] In practical applications, the end column 3 includes a horizontal end and a vertical end. The vertical end of the end column 3 is connected to the fixed frame 1, and the horizontal end is connected to the floating beam 2 through the pressure testing mechanism 7. For example, the end column 3 can be installed and fixed to the fixed frame 1 using conventional methods such as bolts. By setting the pressure testing mechanism 7 on the horizontal section of the end column 3, it can be ensured that the pressure testing mechanism 7 always stably applies a vertical force to the floating beam 2.

[0030] Preferably, the crossarm 8 is detachably mounted on the support column 5, and the support column 5 is provided with an adjustment mechanism for adjusting the position of the crossarm 8. Specifically, the support column 5 is provided with a mounting seat 9 for mounting the crossarm 8. There is an assembly gap between the mounting seat 9 and the support column 5 for mates with the crossarm 8. Both ends of the mounting seat 9 are connected to the support column 5 by connecting bolts 10. The support column 5 is provided with mounting holes that mate with the connecting bolts 10. A nut is provided at one end of the connecting bolt 10 that passes through the mounting hole. Those skilled in the art can also choose other methods to install the connecting bolts 10 according to actual needs, so that the mounting seat 9 and the support column 5 can clamp and fix the crossarm 8 under the action of the connecting bolts 10. This will not be elaborated here.

[0031] In practical applications, the adjustment mechanism includes limiting bolts 20. At least four limiting bolts 20 are evenly distributed on both the left and right ends of the mounting base 9. One end of each limiting bolt 20 extends into the assembly gap and abuts against the crossarm 8, while the other end is threadedly connected to the support column 5. Specifically, the support column 5 is fixed with four fixing blocks for installing the limiting bolts 20. Each fixing block has at least one threaded hole that mates with the limiting bolt 20. In actual use, the operator can adjust the position of the crossarm 8 by tightening the limiting bolts 20, ensuring that the crossarm 8 remains horizontal and maintains the correct position during testing.

[0032] Preferably, a filler 21 is provided between the limiting bolt 20 and the crossarm 8. In actual use, the operator can select a suitable crossarm 8 for installation according to the specifications of the cable pulley assembly 22. If necessary, the filler 21 can also be installed between the limiting bolt 20 and the crossarm 8 to ensure that the limiting bolt 20 can stably limit the crossarm 8, so that crossarms 8 of different specifications can maintain the correct position on the support column 5.

[0033] In an optional embodiment, two gantry frames 6 are spaced apart, two end columns 3 are set at the left and right ends of the fixed frame 1, and four corresponding pressure testing mechanisms 7 are also set. In actual use, this static load testing device for the cable pulley assembly 22 can be used to test whether the strength and stiffness of the cable pulley assembly 22 meet the requirements. After the floating beam 2 is installed on the fixed frame 1, the steel wire rope 23 can be passed through the pulley 24 of the floating beam 2 to pull it up. Then, the thrust of the telescopic cylinder 16 is used to apply a load to the steel wire rope 23 and the pulley 24, and the load is detected by the tension and compression sensor 17 on the telescopic cylinder 16.

[0034] Furthermore, this sheave assembly 22 static load testing device can also be used for load testing of the wire rope 23. The load is applied by the thrust generated by four telescopic cylinders 16, with tension and compression sensors 17 installed on each cylinder 16. After the floating beam 2 is installed, the telescopic cylinders 16 and the tension and compression sensors 17 can be synchronized, and then the wire rope 23 is tightly wound. This is used to test the load on the wire rope 23 and multiple pulleys 24. This structure reduces reliance on manual labor, improves production efficiency, and reduces labor costs.

[0035] The test principle of this static load test device for the cable pulley assembly 22 is as follows: A pulley 24 is installed on the floating beam 2, connected to a steel wire rope 23. The load is applied by the thrust generated by four telescopic cylinders 16. Tension / compression sensors 17 are installed on the telescopic cylinders 16. After the floating beam 2 is installed, the telescopic cylinders 16 and tension / compression sensors 17 are synchronized, and the steel wire rope 23 is then tightly wound. At this time, the telescopic cylinders 16 are not working, the steel wire rope 23 is not under stress, and the tension / compression sensors 17 are under tension, displaying a negative value, and the display resets to zero. The display shows a value of 0. Then, the telescopic cylinders 16 are activated to apply the load, the steel wire rope 23 begins to bear force, and the tension / compression sensors 17 gradually bear pressure, displaying a positive value. The load is continuously and slowly applied through the telescopic cylinders 16, while observing the display values. Loading is stopped when all four displayed values ​​are not less than 14 tons, and the load is maintained for 20 minutes, thus completing the test.

[0036] This utility model discloses a static load testing device for cable pulley assemblies, which can be used to test whether the strength and stiffness of the cable pulley assemblies meet the requirements. The cable pulley assemblies are installed and fixed on the supporting columns using a crossbeam, and connected to the pulleys on the floating beam via steel wire ropes. A pressure testing mechanism can then be used to conduct static load tests on the cable pulley assemblies and steel wire ropes, effectively verifying the structural reliability of the cable pulley assemblies and steel wire ropes. Furthermore, by employing a detachable wheel frame and a slidingly adjustable gantry, this static load testing device can adapt to the testing needs of different cable pulley assemblies, exhibiting good versatility. Operators can easily adjust the positions of the wheel frame and gantry to facilitate the installation of different cable pulley assemblies, ensuring that the pressure testing mechanism on the gantry and end columns can be stably connected to the floating beam for testing, thus improving the static load testing effect and efficiency of the cable pulley assemblies.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A static load testing device for cable pulley systems, characterized in that: The system includes a fixed frame (1) and a floating beam (2). The fixed frame (1) has two end posts (3) at its left and right ends, and there is a gap between the two end posts (3) for accommodating the floating beam (2). The fixed frame (1) has a support column (5) and a gantry (6) at the middle of the fixed frame (1) corresponding to the floating beam (2). The support column (5) is set on one side of the floating beam (2). The support column (5) has a crossbeam (8) for installing the cable sheave assembly (22) above it and is connected to the fixed frame (1) below. The floating beam (2) has a wheel frame (4) for installing the pulley (24). The gantry (6) is sleeved on the outside of the floating beam (2) and is slidably installed on the fixed frame (1) below. The gantry (6) and the end posts (3) are connected to the floating beam (2) above by a pressure testing mechanism (7).

2. The static load test device for a cable and pulley assembly according to claim 1, wherein: The wheel frame (4) is detachably mounted on the floating beam (2), and the floating beam (2) has multiple wheel frame (4) mounting positions.

3. The static load testing device of claim 1, wherein: Below the gantry (6) is a traveling frame (11), which is an I-shaped structural member. The web of the traveling frame (11) is connected to the gantry (6). Traveling wheels (14) are rotatably mounted on both flanges of the traveling frame (11). The fixed frame (1) is provided with a limiting frame (12) that cooperates with the traveling frame (11). The limiting frame (12) is provided with a guide groove for accommodating the traveling frame (11). The limiting frame (12) is provided with a guide hole (13) that cooperates with the traveling wheel (14) at the position corresponding to the traveling wheel (14). The guide hole (13) is connected to the guide groove. The length direction of the guide hole (13) and the guide groove are the same as the sliding direction of the gantry (6).

4. The static load testing device of claim 1, wherein: The pressure testing mechanism (7) includes a connecting seat (15), a telescopic cylinder (16), and a tension / compression sensor (17). The connecting seat (15) is connected to the floating beam (2) by a fixing bolt (18). The floating beam (2) is provided with an elongated hole (19) that mates with the fixing bolt (18). The length direction of the elongated hole (19) is the same as the sliding direction of the gantry (6). A locking nut is provided at one end of the fixing bolt (18) that passes through the elongated hole (19). The fixed end of the telescopic cylinder (16) is connected to the connecting seat (15), and the telescopic end is connected to the gantry (6) through the tension / compression sensor (17).

5. The static load testing device of claim 1, wherein: The end post (3) and the fixing frame (1) form an inverted T-shaped structure.

6. The static load testing device of claim 1, wherein: The end post (3) includes a horizontal end and a vertical end. The vertical end of the end post (3) is connected to the fixed frame (1), and the horizontal end is connected to the floating beam (2) through the pressure test mechanism (7).

7. The static load testing device of claim 1, wherein: The crossarm (8) is detachably mounted on the support column (5), and the support column (5) is provided with an adjustment mechanism for adjusting the position of the crossarm (8).

8. The static load testing device of claim 7, wherein: The support column (5) is provided with a mounting seat (9) for installing the crossbeam (8). There is an assembly gap between the mounting seat (9) and the support column (5) for cooperating with the crossbeam (8). Both ends of the mounting seat (9) are connected to the support column (5) by connecting bolts (10).

9. The static load testing device of claim 7 or 8, wherein: The adjustment mechanism includes a limiting bolt (20), and at least four limiting bolts (20) are evenly arranged at the left and right ends of the mounting base (9). One end of the limiting bolt (20) extends into the assembly gap and abuts against the crossbeam (8), while the other end is threadedly connected to the support column (5).

10. The static load testing device of claim 9, wherein: A filler (21) is provided between the limiting bolt (20) and the crossbeam (8).

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