Cable rope tensioning device

Abstract

The utility model discloses a cable rope tensioning device which comprises an end cover, a flange shaft, a large gear ring, a winding drum, a ratchet wheel, a pawl, a bottom frame, a tension sensor and a gear shaft. The winding drum is used for fixing the end of a cable rope and is connected with the hydraulic wrench through the gear pair so as to amplify input torque. The ratchet wheel is matched with the pawl to lock and release the winding drum; the tension sensor monitors the tension force in real time and feeds back the tension force to the control system; torque is input through a hydraulic wrench, the torque is amplified through a gear pair and then drives a winding drum to tighten a cable wind rope, and precise adjustment and real-time monitoring of tension force are achieved in combination with closed-loop control of a ratchet wheel and pawl locking mechanism and a tension sensor. The device is compact in structure and convenient to operate, large tensioning force needed by ultra-large equipment can be provided, and construction safety and efficiency are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering machinery technical field, concretely for a device for tensioning large -scale hoisting equipment cable wind rope, especially applicable to the cable wind rope tensioning operation of super -large construction equipment. BACKGROUND

[0002] In the engineering machinery field, cable wind rope is a key component for fixing large -scale hoisting equipment (such as tower crane), and the accuracy of its tension directly relates to the safety and stability of equipment;According to design requirement, cable wind rope needs to exert the initial tension of 20% to 30% of the maximum tension of wire rope;However, the traditional tensioning mode has the following problems:

[0003] 1. Rely on manpower operation: traditional method is mostly through manpower capstan or manual tool to exert tension, leading to uneven force, low precision, easy to produce deviation with design value, and burying safety hazard.

[0004] 2. Insufficient tension: with the large -scale of construction equipment, the specification of matching cable wind rope increases, and traditional equipment is difficult to provide sufficient tension.

[0005] 3. Lack of real -time monitoring: unable to real -time feedback tension value, difficult to realize closed loop control, and unable to find abnormal working condition in time.

[0006] 4. Operation is complicated and low in safety: traditional ratchet structure is easy to misoperate, poor in fixed reliability, and low in equipment dismounting efficiency.

[0007] In view of the above -mentioned problems, a new type of tensioning device capable of providing large tension, accurate control, convenient operation and safety is urgently needed. INVENTION CONTENTS

[0008] The utility model aims at providing a cable wind rope tensioning device, solves the problems of insufficient tension, low precision and complicated operation in traditional method through mechanization and intelligentization design, and realizes the quantization controllable, efficient construction and safe operation of tension.

[0009] To solve the technical problems of complicated cable wind rope tensioning operation, unquantifiable tension and inconvenient monitoring in the prior art, the application provides a cable wind rope tensioning device, which comprises a chassis, a gear pair, a drum, a ratchet structure and a tension sensor;

[0010] The two sides of the chassis are oppositely arranged with supporting plates, the supporting plates are provided with shaft holes, the chassis is fixed with a pawl hinge seat and a vertical bearing seat between the two supporting plates, and the surface of one of the supporting plates is embedded with bearing a;

[0011] The gear pair comprises a gear ring and a gear shaft; the inner end of the gear shaft is inserted into the vertical bearing seat, the outer end penetrates the bearing a, the middle section of the gear shaft is integrally formed with a pinion, and the outer end of the gear shaft is designed as a hexagonal bolt head structure, which is suitable for a large torque hydraulic wrench;

[0012] The two sides of the winding drum are respectively inserted into the supporting plate through rotating shafts, the gear ring is sleeved on the right side of the winding drum, and the pinion and the gear ring are engaged with each other.

[0013] The ratchet structure comprises a ratchet wheel and a pawl, the ratchet wheel is arranged on the left side of the winding drum, the pawl is hinged to the pawl hinge seat, and the ratchet wheel and the pawl cooperate to realize locking and releasing of the winding drum.

[0014] The tension sensor monitors the tension of the cable rope in real time and feeds back to the control system.

[0015] Further, the application provides a cable rope tensioning device, wherein the input torque is amplified by the gear pair composed of the pinion and the gear ring, and the transmission ratio is 1:5.

[0016] Further, the application provides a cable rope tensioning device, wherein the pawl is engaged with the ratchet wheel through gravity, and the pawl and the pawl hinge seat are provided with two lock pin hole positions corresponding to the tensioning state and the releasing state respectively, and the lock pin is inserted into the lock pin hole to limit the freedom degree of the pawl.

[0017] Further, the application provides a cable rope tensioning device, wherein the rotating shaft comprises a flange shaft and an end cover, the end cover is embedded in the shaft hole, the inner cavity of the end cover is embedded with a bearing b, the flange surface of the flange shaft is fixed to the end surface of the winding drum, and the shaft end of the flange shaft is inserted into the bearing b.

[0018] The core innovation points are as follows:

[0019] 1. Power input structure: the input end is designed as a hexagonal bolt head form, which is suitable for a large torque hydraulic wrench, replacing manual input, and ensuring that the tensioning force value is accurate and controllable.

[0020] 2. Torque amplification mechanism: the gear pair composed of the gear shaft and the gear ring amplifies the initial torque of the hydraulic wrench, thereby providing super large tensioning force to meet the needs of super large equipment.

[0021] 3. Winding drum and ratchet wheel and pawl linkage structure: the winding drum and the ratchet wheel are connected by bolts, the pawl automatically locks the ratchet wheel by gravity, and the lock pin realizes safe switching between the tensioning and releasing states.

[0022] 4. Closed-loop control system: the tension sensor is configured to monitor the tensioning force value in real time and feed back to the control system, realizing closed-loop accurate control.

[0023] 5. Modular design: chassis integrates slide and fixed support, equipment is convenient to disassemble and assemble, and different angle tensioning requirements are adapted.

[0024] Compared with the prior art, the utility model has the following advantages:

[0025] 1. Large and controllable tension: through the combination of hydraulic wrench and gear pair, the tension can be more than 3 times of that of traditional equipment, and the input value can be quantitatively adjusted.

[0026] 2. Safe and reliable operation: the ratchet pawl and the lock pin double locking mechanism prevent the winding drum from misoperation; the tension sensor monitors in real time, and abnormal working conditions are alarmed in time.

[0027] 3. Strong applicability: the winding drum can adapt to cable wind ropes of different diameters, and the chassis slide design supports multi-angle tensioning.

[0028] 4. High construction efficiency: mechanized operation replaces manual labor, reduces labor intensity, and improves construction efficiency by more than 50%. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a structural schematic view of a cable wind rope tensioning device of the utility model;

[0030] Figure 2 is a schematic view of a cable wind rope tensioning device of the utility model;

[0031] Figure 3 is a schematic view of an input end of a cable wind rope tensioning device of the utility model;

[0032] Figure 4 is a ratchet pawl structure diagram of a cable wind rope tensioning device of the utility model, which shows the switching mechanism of the tensioning state (ratchet pawl locking) and the release state (ratchet pawl lifting);

[0033] Figure 5 is Figure 1 a change angle schematic view.

[0034] Wherein: 1, chassis; 2, winding drum; 3, tension sensor; 4, supporting plate; 5, shaft hole; 6, ratchet pawl hinge seat; 7, vertical bearing seat; 8, bearing a; 9, large gear ring; 10, gear shaft; 11, small gear; 12, hexagonal bolt head; 13, hydraulic wrench; 14, flange shaft; 15, end cover; 16, bearing b; 17, ratchet wheel; 18, ratchet pawl; 19, lock pin hole; 20, fixed support. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0036] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] As shown in Figures 1 to 5 The present embodiment provides a cable rope tensioning device, which comprises a base frame 1, a gear pair, a winding drum 2, a ratchet structure and a tension sensor 3;

[0039] The base frame 1 is provided with a supporting plate 4 on both sides, the supporting plate 4 is provided with an axle hole 5, the base frame 1 is fixed between the two supporting plates 4, and a ratchet pawl hinge seat 6 and a vertical bearing seat 7 are arranged, and the surface of one of the supporting plates 4 is embedded with a bearing a 8;

[0040] The gear pair comprises a large gear ring 9 and a gear shaft 10; the inner end of the gear shaft 10 is inserted into the vertical bearing seat 7, the outer end penetrates through the bearing a 8, the intermediate segment of the gear shaft 10 is integrally formed with a pinion 11, and the outer end of the gear shaft 10 is designed as a hexagonal bolt head 12 structure, which is suitable for a large torque hydraulic wrench 13;

[0041] The reel 2 is inserted into the supporting plate 4 through the rotating shaft on both sides, the large gear ring 9 is arranged on the right side of the reel 2, and the small gear 11 and the large gear ring 9 are engaged with each other; the input torque is amplified through the gear pair composed of the small gear 11 and the large gear ring 9, and the transmission ratio is 1:5; the rotating shaft comprises a flange shaft 14 and an end cover 15, the end cover 15 is embedded in the shaft hole 5, the inner cavity of the end cover 15 is embedded with a bearing b16, and the flange surface of the flange shaft 14 is fixed to the end surface of the reel 2, and the shaft end of the flange shaft 14 is inserted into the bearing b16;

[0042] The ratchet structure comprises a ratchet wheel 17 and a pawl 18, the ratchet wheel 17 is arranged on the left side of the reel 2, the pawl 18 is hinged to the pawl hinge seat 6, and the ratchet wheel 17 and the pawl 18 are matched to realize the locking and releasing of the reel 2; the pawl 18 is engaged with the ratchet wheel 17 through the weight, and the pawl 18 and the pawl hinge seat 6 are provided with two lock pin holes 19 in correspondence, which correspond to the tensioning state and the releasing state respectively, and the lock pin is inserted into the lock pin hole 19 to limit the freedom degree of the pawl 18;

[0043] The tension sensor 3 monitors the tension of the cable rope in real time and feeds back to the control system.

[0044] 1. Device assembly and cable rope fixing

[0045] The end of the cable rope is fixed on the reel 2, the outer surface of the reel 2 is designed with anti-skid lines to enhance the friction with the cable rope, and the chassis 1 is fixed to the ground through bolts.

[0046] 2. Power input and torque amplification

[0047] As shown in the figure, Figure 2 the operator clamps the hydraulic wrench 13 into the hexagonal bolt head 12 of the gear shaft 10, sets the torque value according to the design requirements; after starting the hydraulic wrench 13, the initial torque is transmitted to the large gear ring 9 through the small gear 11 of the gear shaft 10; since the transmission ratio of the gear pair is designed to be 1:5, the final output torque is 5 times the input torque, thereby providing super large tension.

[0048] 3. Ratchet wheel 17 and pawl 18 state switching

[0049] As shown in the figure, Figure 3 during the tensioning process, the pawl 18 is in the releasing state (the lock pin is located on the right side in the figure), and the reel 2 can rotate freely to tighten the cable rope; when the tension sensor 3 shows that the tension reaches the preset value, the operator pulls out the lock pin, the pawl 18 rotates around the pawl hinge seat 6 under the action of the weight, clamps into the tooth groove of the ratchet wheel 17, and enters the locking state; then insert the lock pin into the lock pin hole 19 on the left side in the figure, completely fix the pawl 18, and prevent accidental disengagement.

[0050] 4. Closed-loop control and safety monitoring

[0051] The tension sensor 3 is hinged between the chassis 1 and the fixed support 20 through a pin shaft, and the fixed support 20 is fixed to the stable work station; during the tensioning process, the tension sensor 3 collects the cable rope tension data in real time and feeds back to the operator through the display screen; if the tensioning force exceeds the set range or abnormally fluctuates, the system automatically triggers an alarm and suspends the operation to ensure the construction safety.

[0052] 5. Equipment disassembly and transfer

[0053] After the tensioning operation is completed, the locking pin is removed and the pawl 18 is switched to the release state, and the cable rope can be loosened by reversing the operation of the hydraulic wrench 13; the modular design of the chassis 1 supports quick disassembly, and the whole equipment can be transferred by hoisting, which is suitable for frequent construction requirements.

[0054] The parts not described in the utility model are known to those skilled in the art.

[0055] The above detailed the preferred embodiments of the utility model. It should be understood that those skilled in the art can make many modifications and changes without creative labor according to the concept of the utility model. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment on the basis of the existing technology according to the concept of the utility model shall be within the protection scope determined by the claims.

Claims

1. A guy rope tensioning device, characterized in that, Includes a base frame, gear pair, drum, ratchet structure, and tension sensor; The base frame has two oppositely arranged support plates with shaft holes. The base frame is located between the two support plates and a pawl hinge seat and a vertical bearing seat are fixed thereon. The surface of one of the support plates is fitted with bearing a. The gear pair includes a large gear ring and a gear shaft; the inner end of the gear shaft is inserted into the vertical bearing seat, and the outer end passes through the bearing a. The middle section of the gear shaft is integrally formed with a small gear, and the outer end of the gear shaft is designed with a hexagonal bolt head structure to be compatible with a high-torque hydraulic wrench. The two sides of the drum are respectively inserted into the support plate through rotating shafts, the large gear ring is sleeved on the right side of the drum, and the small gear and the large gear ring mesh with each other; The ratchet structure includes a ratchet and a pawl. The ratchet is located on the left side of the drum, and the pawl is hinged to the pawl hinge seat. The ratchet and pawl cooperate to lock and release the drum. The tension sensor monitors the tension of the guy rope in real time and feeds it back to the control system.

2. The guy rope tensioning device according to claim 1, characterized in that, The input torque is amplified by the gear pair consisting of the pinion and the ring gear, with a transmission ratio of 1:

5.

3. The guy rope tensioning device according to claim 1, characterized in that, The pawl engages with the ratchet by its own weight. The pawl and the pawl hinge seat are provided with two locking pin holes, corresponding to the tensioned state and the released state, respectively. After the locking pin is inserted into the locking pin hole, the pawl's degree of freedom is restricted.

4. The guy rope tensioning device according to claim 1, characterized in that, The rotating shaft includes a flange shaft and an end cap. The end cap is fitted into the shaft hole, and a bearing b is fitted into the inner cavity of the end cap. The flange face of the flange shaft is fixed to the end face of the drum, and the shaft end of the flange shaft is inserted into the bearing b.

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