Crane rope strength detection device

Abstract

The utility model relates to the technical field of rope strength detection, in particular to a crane rope strength detection device which comprises a fixed pedestal, supporting arms are hinged to the left side and the right side of the fixed pedestal through pin shafts, and clamping assemblies used for clamping various types of ropes are arranged at the ends, away from the pin shafts, of the two supporting arms. A first adjusting assembly used for controlling the two supporting arms to rotate with the pin shaft as the axis is arranged in the fixed pedestal, and a supporting assembly is arranged at the top of the fixed pedestal. By arranging the supporting arm, the clamping assembly, the first adjusting assembly and the supporting assembly, the working states of the rope at the connecting point tension, the pulley block bending deformation stress and the middle section tensile stress can be simulated at the same time, the full-path stress scene of the rope in actual operation is covered, the method is closer to the actual working condition, the one-sidedness of single-dimension testing is avoided, and the testing efficiency is improved. Meanwhile, the device can adapt to ropes of various models and diameters, and the applicability and the flexibility of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rope strength detection, in particular to a crane rope strength detection device. Background Art

[0002] Ropes play a crucial role in lifting operations, carrying cargo weight and transmitting power. Their safety is directly related to personnel safety, equipment operation, and operational safety. The core reason for using strength testing devices is to accurately assess rope strength in real time, prevent breakage risks, and ensure safe and reliable operation of lifting systems.

[0003] A tower crane rope strength testing device disclosed in Chinese patent publication number CN220473232U comprises two sets of hydraulic rods, a connecting plate, and a second limiting ring. When in use, the hydraulic rods are activated to drive the connecting plate and the second limiting ring to rotate and perform a tensile test on the rope. However, according to rope strength testing devices provided in related fields and prior art, existing testing devices may only focus on the tension at a specific position of the rope, without considering the force differences at different positions such as the connection point, the pulley block, and the middle section. This results in incomplete test results and is only suitable for ropes of specific models and diameters, limiting the application range of the device in lifting operations of different types and sizes. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background technology, and provide a crane rope strength detection device.

[0005] The purpose of the utility model is achieved through the following technical solutions: A crane rope strength detection device includes a fixed base, and the left and right sides of the fixed base are hinged with support arms through pins, and the ends of the two support arms away from the pins are provided with clamping components for clamping ropes of various types. The interior of the fixed base is provided with a first adjustment component for controlling the two support arms to rotate with the pin as the axis, and the top of the fixed base is provided with a support component.

[0006] Preferably, the clamping assembly includes a fixing piece fixedly mounted on the end of the support arm, a through hole is provided on the fixing piece, U-shaped pieces are slidably provided on the front and rear sides of the fixing piece, both ends of the U-shaped piece are facing the through hole, clamping blocks are fixedly provided on both ends of the U-shaped piece, and a second adjustment assembly is provided on the fixing piece for controlling the two U-shaped pieces to approach or move away from each other.

[0007] Preferably, the second adjustment component includes a screw rod rotatably arranged on the fixing member, the screw rod is a left-handed threaded rod, and the bottom of the two U-shaped members are fixed with a fixing block, and the two fixing blocks are respectively threadedly engaged with the two ends of the screw rod, and a turning handle is fixedly installed at one end of the screw rod.

[0008] Preferably, a V-shaped groove is formed on a side of the clamping block facing the through hole, and a plurality of engaging blocks are fixedly provided inside the V-shaped groove.

[0009] Preferably, the first adjustment component includes a hydraulic rod fixedly installed inside the fixed base, the output end of the hydraulic rod is designed to face the output end of the hydraulic rod, and a rack with double-sided meshing is fixedly installed on the output end of the hydraulic rod. The rack is arranged between the two support arms, and the two support arms are provided with gears at one end close to the rack, and the two gears are engaged with the rack.

[0010] Preferably, a groove is provided on the outer surface of the pin shaft, and protrusions matching the groove are fixedly provided at the positions of the support arm and the gear corresponding to the groove. A first rotating hole is provided at both ends of the fixed base located on the pin shaft, and the pin shaft is connected to the first rotating hole through a bearing.

[0011] Preferably, the support assembly includes a fixing frame fixedly mounted on the top of the fixing pedestal, and a V-shaped roller is rotatably provided inside the fixing frame.

[0012] Beneficial effects:

[0013] The crane rope strength testing device, by providing a support arm, a clamping assembly, a first adjustment assembly and a support assembly, can achieve the effect of simultaneously simulating the working conditions of the rope at the connection point tension, the bending deformation stress of the pulley block and the tensile stress in the middle section, covering the full path stress scenario of the rope in actual operation, being closer to the actual working conditions, avoiding the one-sidedness of single-dimensional testing, and at the same time being adaptable to ropes of various models and diameters, increasing its applicability and flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0015] Figure 1 This is a structural diagram of the fixed base of the utility model;

[0016] Figure 2This is a schematic diagram of the state of the support arm when the rope of the utility model is in a relaxed state;

[0017] Figure 3 This is a schematic diagram of the state of the support arm when the rope of the utility model is in a taut state;

[0018] Figure 4 This is a schematic diagram of the internal structure of the fixed base of the utility model;

[0019] Figure 5 This is a schematic structural diagram of the first adjustment component of the present invention;

[0020] Figure 6 This is a schematic structural diagram of the clamping assembly and the second adjustment assembly of the utility model;

[0021] Figure 7 This is a structural diagram of the support assembly of the utility model.

[0022] In the figure: 1. Fixed base; 2. Pin; 3. Support arm; 4. Clamping assembly; 401. Fixing part; 402. Through hole; 403. U-shaped part; 404. Clamping block; 4041. V-shaped groove; 4042. Engaging block; 5. First adjusting assembly; 501. Hydraulic rod; 502. Rack; 503. Gear; 6. Support assembly; 601. Fixed frame; 602. V-shaped roller; 7. Second adjusting assembly; 701. Screw; 702. Fixing block; 703. Turning handle; 8. Protrusion; 9. First rotating hole. DETAILED DESCRIPTION

[0023] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0024] Additional aspects and advantages of the present invention will be further described below in conjunction with the accompanying drawings, and some will become apparent from the following description or be learned through practice of the present invention.

[0025] like Figures 1 to 7As shown, a crane rope strength detection device includes a fixed base 1, and arms 3 are hinged on the left and right sides of the fixed base 1 through a pin 2. The ends of the two arms 3 away from the pin 2 are provided with a clamping assembly 4 for clamping various types of ropes. The interior of the fixed base 1 is provided with a first adjustment assembly 5 for controlling the rotation of the two arms 3 around the pin 2 as the axis. The top of the fixed base 1 is provided with a support assembly 6; the support assembly 6 includes a fixing frame 601 fixedly installed on the top of the fixed base 1, and a V-shaped roller 602 is rotatably provided inside the fixing frame 601.

[0026] like Figure 6 and Figure 7 As shown, the clamping assembly 4 includes a fixing part 401 fixedly mounted on the end of the support arm 3, a through hole 402 is provided on the fixing part 401, U-shaped parts 403 are slidably provided on the front and rear sides of the fixing part 401, both ends of the U-shaped part 403 are facing the through hole 402, and clamping blocks 404 are fixedly provided on both ends of the U-shaped part 403, and a V-shaped groove 4041 is provided on the side of the clamping block 404 facing the through hole 402, and a plurality of bite blocks 4042 are fixedly provided inside the V-shaped groove 4041, and a second adjustment component 7 for controlling the two U-shaped parts 403 to move closer to or away from each other is provided on the fixing part 401. Through the V-shaped groove 4041 and the V-shaped roller 602, it can adapt to ropes of various models and diameters, and can be used for lifting operations of different types and sizes, thereby increasing its applicability and flexibility.

[0027] like Figure 6 and Figure 7 As shown, the second adjustment component 7 includes a screw rod 701 rotatably set on the fixing member 401, the screw rod 701 is a left-handed threaded rod, and the bottom of the two U-shaped members 403 are fixed with a fixing block 702, and the two fixing blocks 702 are respectively engaged with the threads at both ends of the screw rod 701. A turning handle 703 is fixedly installed at one end of the screw rod 701, and a second rotating hole is opened at the position of the fixing member 401 corresponding to the screw rod 701. The screw rod 701 is connected to the second rotating hole through a bearing, so that the above-mentioned bearing can be used to reduce the friction force of the screw rod 701 during rotation, and improve the stability of the screw rod 701 during rotation.

[0028] like Figures 4 to 7As shown, the first adjustment component 5 includes a hydraulic rod 501 fixedly mounted inside the fixed base 1, the output end of the hydraulic rod 501 is designed to face the direction, and the output end of the hydraulic rod 501 is fixedly mounted with a rack 502 with double-sided meshing, and the rack 502 is arranged between the two support arms 3, and the two support arms 3 are provided with a gear 503 at one end close to the rack 502, and the two gears 503 are meshed with the rack 502. The outer surface of the pin 2 is provided with a groove, and the positions of the support arm 3 and the gear 503 corresponding to the groove are fixed with a protrusion 8 adapted to the groove. The cooperation between the protrusion 8 and the groove can facilitate the assembly steps of the support arm 3 and the rack 502 and the fixed base 1, and can also make the support arm 3 and the rack 502 rotate at the same time with the pin 2 as the axis, and the fixed base 1 A first rotating hole 9 is provided at both ends of the pin shaft 2, and the pin shaft 2 is connected to the first rotating hole 9 through a bearing. The above-mentioned bearing can reduce the friction force when the pin shaft 2 rotates, and improve the stability of the pin shaft 2 when rotating; when the rope is clamped, the hydraulic rod 501 is used to control the rack 502 to slide upward, and then the two gears 503 are used to engage with the rack 502, so that the two support arms 3 rotate with the pin shaft 2 as the axis, so that the two support arms 3 interact with each other to simulate the tension of the connection point. When the rope detection is completed, the hydraulic rod 501 is used to control the rack 502 to move downward, and then the two gears 503 are used to engage with the rack 502, so that the two support arms 3 rotate in the opposite direction with the pin shaft 2 as the axis, so that the rope is no longer in a straight state.

[0029] The steps are as follows:

[0030] S1: If Figure 1 and Figure 2 As shown, when in use, first pass the end of the rope through the inside of the through hole 402, and then lock the position of the rope through the clamping assembly 4;

[0031] S2: If Figures 2 to 7 As shown, when locked, the screw rod 701 is rotated by turning the handle 703, so that the two fixing blocks 702 respectively drive the two U-shaped members 403 closer to each other, thereby making the four clamping blocks 404 cooperate with each other, so that the V-shaped grooves 4041 of the two opposing clamping blocks 404 clamp the rope, and cooperate with the multiple bite blocks 4042 to improve the clamping strength of the rope;

[0032] S3: If Figures 2 to 7 As shown, when the rope is clamped, the hydraulic rod 501 controls the rack 502 to slide upward, and then the two gears 503 are engaged with the rack 502, so that the two arms 3 rotate around the pin 2 as the axis, so that the two arms 3 interact with each other, which can simulate the tension of the connection point;

[0033] S4: As Figures 2 to 7As shown, when the rope between the two arms 3 contacts the V-shaped roller 602, the V-shaped roller 602 can cause the rope to bend, thereby simulating the bending deformation stress of the pulley block and the tensile stress in the middle section, covering the full-path force scenario of the rope in actual operation, which is closer to the actual working condition. Then, by obtaining the force applied by the hydraulic rod 501, the measurement value can be obtained. The test result has more engineering reference value and avoids the one-sidedness of single-dimensional testing.

[0034] S5: By simulating the tension of the rope at different locations, the tension distribution of the rope at the connection point, around the pulley block, and in the middle section can be accurately tested. Understanding the tension in each part of the rope helps to assess the fatigue life and potential breakage risk of the rope, thereby ensuring the safety of the lifting operation;

[0035] S6: The V-grooves 4041 and V-rollers 602 can accommodate ropes of various types and diameters and can be used for lifting operations of different types and sizes, thereby increasing its applicability and flexibility.

[0036] S7: After the rope inspection is completed, the hydraulic rod 501 controls the rack 502 to move downward, and then the two gears 503 are engaged with the rack 502, so that the two arms 3 rotate in opposite directions with the pin 2 as the axis;

[0037] S8: Figures 2 to 7 As shown, when the rope is no longer in a straight state, the screw rod 701 can be rotated in the opposite direction by turning the handle 703, so that the two fixing blocks 702 respectively drive the two U-shaped parts 403 to separate from each other, and the rope can be removed at this time.

[0038] The hydraulic rod 501 described in this application is a well-known technology in the technical field. Therefore, technicians in this field know how to obtain the force applied by the hydraulic rod 501 to obtain the measurement value, so its specific structure and working principle are not described in detail.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention as claimed.

Claims

1. A crane rope strength detection device, characterized in that: The invention comprises a fixed pedestal (1), wherein both left and right sides of the fixed pedestal (1) are hinged with support arms (3) via a pin shaft (2), and the ends of the two support arms (3) away from the pin shaft (2) are provided with a clamping assembly (4) for clamping various types of ropes, and the interior of the fixed pedestal (1) is provided with a first adjusting assembly (5) for controlling the two support arms (3) to rotate around the pin shaft (2), and the top of the fixed pedestal (1) is provided with a supporting assembly (6).

2. A crane rope strength detection device according to claim 1, characterized in that: The clamping assembly (4) comprises a fixing member (401) fixedly mounted on the end of the support arm (3), a through hole (402) being provided on the fixing member (401), U-shaped members (403) being slidably provided on both the front and rear sides of the fixing member (401), both ends of the U-shaped member (403) facing the through hole (402), and clamping blocks (404) being fixedly provided on both ends of the U-shaped member (403), and a second adjusting assembly (7) for controlling the two U-shaped members (403) to move closer to or further away from each other is provided on the fixing member (401).

3. A crane rope strength detection device according to claim 2, characterized in that: The second adjustment assembly (7) includes a screw rod (701) rotatably arranged on the fixing member (401), the screw rod (701) being a left-handed threaded rod, and a fixing block (702) being fixedly provided at the bottom of each of the two U-shaped members (403), the two fixing blocks (702) respectively being threadedly engaged with the two ends of the screw rod (701), and a turning handle (703) being fixedly installed at one end of the screw rod (701).

4. A crane rope strength detection device according to claim 2, characterized in that: A V-shaped groove (4041) is provided on one side of the clamping block (404) facing the through hole (402), and a plurality of engaging blocks (4042) are fixedly provided inside the V-shaped groove (4041).

5. The crane rope strength detection device according to claim 1, characterized in that: The first adjustment component (5) comprises a hydraulic rod (501) fixedly mounted inside the fixed pedestal (1), the output end of the hydraulic rod (501) being designed to face in the direction of rotation, a rack (502) having double-sided meshing teeth being fixedly mounted on the output end of the hydraulic rod (501), the rack (502) being arranged between the two support arms (3), and a gear (503) being provided at one end of the two support arms (3) close to the rack (502), and the two gears (503) being meshed with the rack (502).

6. A crane rope strength detection device according to claim 5, characterized in that: A groove is provided on the outer surface of the pin shaft (2); protrusions (8) adapted to the groove are fixedly provided at positions of the support arm (3) and the gear (503) corresponding to the groove; first rotation holes (9) are provided at both ends of the fixed base (1) located on the pin shaft (2); and the pin shaft (2) is connected to the first rotation holes (9) through a bearing.

7. A crane rope strength detection device according to claim 4, characterized in that: The support assembly (6) comprises a fixing frame (601) fixedly mounted on the top of the fixing pedestal (1), and a V-shaped roller (602) is rotatably provided inside the fixing frame (601).

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