Labor-saving device for adjusting cable force of bridge

Abstract

The utility model provides a labor-saving device for adjusting cable force of a bridge. The labor-saving device comprises a base, a supporting frame, a lower middle shaft, an upper middle shaft, a power chain wheel, a transmission chain wheel, a lower bearing, an upper bearing, a chain, a crank, a winding disc and a counter-force rope. The supporting frame is arranged on the base, the lower middle shaft is arranged at the lower end of the supporting frame, and the upper middle shaft is arranged at the upper end of the supporting frame. The lower bearing is sleeved on the lower middle shaft, and the upper bearing is sleeved on the upper middle shaft; the power chain wheel is rotationally arranged on the lower middle shaft through a lower bearing, and the transmission chain wheel is rotationally arranged on the upper middle shaft through an upper bearing; the power chain wheel and the transmission chain wheel are connected through a chain, and the diameter of the transmission chain wheel is larger than that of the power chain wheel. A crank is arranged in the middle of the front end of the power chain wheel, a winding disc is fixedly arranged in the middle of the front end of the transmission chain wheel, and one end of the counter-force rope is fixed to a supporting frame at the rear end of the upper middle shaft. The device can realize single-person operation, and is convenient to operate, time-saving and labor-saving.

Description

[Technical field]

[0001] The utility model relates to a labor-saving device for adjusting the cable force of a bridge. [Background technology]

[0002] Large bridges such as cable-stayed bridges and arch bridges require cables to pull up the bridge deck. Bridge cable force refers to the force applied to the bridge cables during the construction and maintenance of the bridge in order to ensure the stability and safety of the bridge structure. The zip-lock nut in the bridge cable force is a fastener used to adjust and fix the cable force. The design of the zip-lock nut allows construction workers to adjust the size of the cable force by rotating the nut. The cable force adjustment requires a large wrench, and the nut needs to be disengaged and inserted repeatedly. Due to the heavy weight of the wrench and the high position of the nut, a small mobile platform is often required. A rope is tied to the wrench, and the nut is turned by the cooperation of workers standing on the platform and on the ground. This action is time-consuming and labor-intensive, and there is a risk of falling from high altitude.

[0003] Therefore, it is necessary to explore a labor-saving device for adjusting the cable force of a bridge, which can realize single-person operation, is easy to operate, and saves time and effort. [Contents of the utility model]

[0004] The technical problem to be solved by the utility model is to provide a labor-saving device for adjusting the cable force of a bridge, which can realize single-person operation, is easy to operate, and saves time and labor.

[0005] The utility model is achieved in this way:

[0006] A labor-saving device for adjusting the cable force of a bridge, the labor-saving device comprising a base, a support frame, a lower middle shaft, an upper middle shaft, a power chain plate, a transmission chain plate, a lower bearing, an upper bearing, a chain, a crank, a winding disc and a reaction rope;

[0007] The support frame is arranged on the base, the lower middle shaft is arranged at the lower end of the support frame, and the upper middle shaft is arranged at the upper end of the support frame; the lower bearing is sleeved on the lower middle shaft, and the upper bearing is sleeved on the upper middle shaft; the power chain plate is rotatably arranged on the lower middle shaft through the lower bearing, and the transmission chain plate is rotatably arranged on the upper middle shaft through the upper bearing; the power chain plate and the transmission chain plate are connected by a chain, and the diameter of the transmission chain plate is larger than that of the power chain plate;

[0008] A crank is arranged at the middle of the front end of the power chainring, a winding disc is fixedly arranged at the middle of the front end of the transmission chainring, and one end of the reaction force rope is fixed on the support frame at the rear end of the upper middle shaft.

[0009] The advantages of the utility model are:

[0010] The utility model has a simple structure, can assist a large wrench in adjusting the bridge cable force, achieves the purpose of labor saving through the relationship between the diameters of the power chain plate and the transmission chain plate, and can realize the rotation of the large wrench operated by a single person, which is more convenient and efficient.

Brief Description of the Drawings

[0011] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

[0012] Figure 1 The utility model is a front schematic diagram of a labor-saving device for adjusting the cable force of a bridge.

[0013] Figure 2 It is a three-dimensional effect diagram of a labor-saving device for adjusting the cable force of a bridge according to the utility model. [Specific implementation method]

[0014] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings and specific implementation methods. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0015] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0016] See also Figure 1 to Figure 2 As shown, the utility model is a labor-saving device for adjusting the cable force of a bridge, the labor-saving device comprises a base 1, a support frame 2, a lower middle shaft 3, an upper middle shaft 4, a power chain plate 5, a transmission chain plate 6, a lower bearing, an upper bearing, a chain 7, a crank 8, a winding disc 9 and a reaction rope 10;

[0017] The support frame 2 is arranged on the base 1, the lower middle shaft 3 is arranged at the lower end of the support frame 2, and the upper middle shaft 4 is arranged at the upper end of the support frame 2; the lower bearing is sleeved on the lower middle shaft 3, and the upper bearing is sleeved on the upper middle shaft 4; the power chain plate 5 is rotatably arranged on the lower middle shaft 3 through the lower bearing, and the transmission chain plate 6 is rotatably arranged on the upper middle shaft 4 through the upper bearing; the power chain plate 5 and the transmission chain plate 6 are connected by a chain 7, and the diameter of the transmission chain plate 6 is larger than that of the power chain plate 5;

[0018] A crank 8 is provided in the middle of the front end of the power chainring 5, a winding disc 9 is fixedly provided in the middle of the front end of the transmission chainring 6, and one end of the reaction rope 10 is fixed on the support frame 2 at the rear end of the upper middle shaft 4.

[0019] In another embodiment of the utility model, the working process is as follows: the free end of the reaction rope 10 of the labor-saving device is fixed (the fixing direction is opposite to the rope 100 on the winding disk 9, providing reaction force for the large wrench), one end of the rope 100 tied to the large wrench used for adjusting the bridge cable force is fixed on the winding disk 9 of the labor-saving device, and the crank 8 is manually rotated to drive the power chain plate 5 to rotate, and the transmission chain plate 6 is driven to rotate through the chain 7, and the transmission chain plate 6 then drives the winding disk 9 to rotate at the same frequency and pulls the rope 100 to assist the rotation of the large wrench.

[0020] The utility model has a simple structure, can assist a large wrench in adjusting the bridge cable force, achieves the purpose of labor saving through the relationship between the diameters of the power chain plate and the transmission chain plate, and can realize the rotation of the large wrench operated by a single person, which is more convenient and efficient.

[0021] Although the specific implementation methods of the present invention are described above, those skilled in the art should understand that the specific embodiments described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A labor-saving device for adjusting the cable force of a bridge, characterized in that: The labor-saving device comprises a base, a support frame, a lower middle shaft, an upper middle shaft, a power chainring, a transmission chainring, a lower bearing, an upper bearing, a chain, a crank, a winding disc and a reaction rope; The support frame is arranged on the base, the lower middle shaft is arranged at the lower end of the support frame, and the upper middle shaft is arranged at the upper end of the support frame; the lower bearing is sleeved on the lower middle shaft, and the upper bearing is sleeved on the upper middle shaft; the power chain plate is rotatably arranged on the lower middle shaft through the lower bearing, and the transmission chain plate is rotatably arranged on the upper middle shaft through the upper bearing; the power chain plate and the transmission chain plate are connected by a chain, and the diameter of the transmission chain plate is larger than that of the power chain plate; A crank is arranged at the middle of the front end of the power chainring, a winding disc is fixedly arranged at the middle of the front end of the transmission chainring, and one end of the reaction force rope is fixed on the support frame at the rear end of the upper middle shaft.

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