CN201737527U

CN201737527U - Tensioning device

Info

Publication number: CN201737527U
Application number: CN 201020271999
Authority: CN
Inventors: 李德明; 沈孙园; 孟庆生
Original assignee: Zhejiang Business College
Current assignee: Zhejiang Business College
Priority date: 2010-07-27
Filing date: 2010-07-27
Publication date: 2011-02-09
Anticipated expiration: 2020-07-27

Abstract

The utility model discloses a tensioning device, which comprises a framework (1). The left side and the right side of the framework (1) are respectively provided with a crown block (2). Each crown block (2) is rotatably connected with the framework (1) through a pulley fixing shaft (3). A slide block (5) which is arranged between the two crown blocks (2) is connected with the framework (1) in a sliding manner. The slide block (5) is provided with a movable block (4). A weight (8) is connected with the slide block (5). The utility model has the advantages of simple structure and low cost, can compensate the length change of a tensioning rope and keep tensile force unchanged.

Description

A kind of tightening device

Technical field

The utility model patent relates to a kind of tightening device, and particularly a kind of tensioned lines length variations that can compensate can keep tensile force unmodified device again.

Background technology

When being used for that in fields such as weaving, printings materials such as line or rope are carried out tensioning tension value there is special requirement, promptly requires this tension value not change with the variation of tensioned lines length.At present flexible materials such as rope, line, steel wire being carried out tensioning mainly is to utilize tightening devices such as hydraulic pressure, spring, and the tensile force that these tightening devices provide is constant, can satisfy the requirement on producing; But device is complicated, costs an arm and a leg, and it can not be widely used.

The utility model content

The technical problems to be solved in the utility model provide a kind of simple in structure, with low cost, can compensate the tensioned lines length variations and can keep tensile force unmodified tightening device again.

In order to solve the problems of the technologies described above, the utility model provides a kind of tightening device, comprises frame, in the left and right sides of frame a fixed pulley is set respectively respectively, and each fixed pulley all is rotatedly connected by a pulley anchor shaft and frame; Slide block between two fixed pulleys slides with frame and links to each other, and movable pulley is set on slide block; Counterweight links to each other with slide block.

Improvement as tightening device of the present utility model: groove vertically is set on frame, and two fixed pulleys are positioned at the left and right sides of groove, and the slide block that is positioned at groove slides with groove and links to each other.

Further improvement as tightening device of the present utility model: two fixed pulleys are positioned at the left and right sides of groove upper end, in the lower end of groove stop screw are set.

Further improvement as tightening device of the present utility model: counterweight links to each other with slide block by pipe link.

Tightening device of the present utility model, owing to adopted movable pulley mechanism, and provide invariable tensile force to flexible material with counterweight, can keep tensile force constant again thereby realized compensating the tensioned lines length variations.Tensioning device structure of the present utility model is simple, is applicable to flexible materials such as tensioned lines, line, steel wire.

Description of drawings

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail.

Fig. 1 is the perspective view of tightening device of the present utility model;

Fig. 2 is the actual running condition scheme drawing of Fig. 1.

The specific embodiment

Embodiment 1, Fig. 1 have provided a kind of tightening device, comprise frame 1, at the center position of frame 1 groove 9 are set vertically, in groove 9 upper ends a pulley anchor shaft 3 that is fixedly linked with frame 1 are set each side; Promptly two pulley anchor shafts 3 are symmetrically located at the left and right sides of groove 9 upper ends.Fixed pulley 2 that rotates with respect to this pulley anchor shaft 3 of suit on each pulley anchor shaft 3, thus realize being rotatedly connected of fixed pulley 2 and frame 1.The slide block 5 that is positioned at groove 9 can move up and down along groove 9, in the lower end of groove 9 stop screw 6 is set, and when slide block 5 is displaced downwardly to when contacting with stop screw 6, slide block 5 just can not move down again.Movable pulley 4 is set on slide block 5; One end of pipe link 7 links to each other with slide block 5, and the other end of pipe link 7 links to each other with counterweight 8.

During the actual use of above-mentioned tightening device, as shown in Figure 2, will need slack-free tensioned lines 100 to walk around successively earlier fixed pulley 2, movable pulley 4 that is positioned at groove 9 left sides and the fixed pulley 2 that is positioned at groove 9 right sides; Select the counterweight 8 of Different Weight again for use according to the required tensile force size of reality; Just can finish the tensioning of tensioned lines 100.Because slide block 5 can move up and down along groove 9, therefore can compensate the length variations of tensioned lines 100.Because counterweight 8 is given slide block 5 with weight transfer, the movable pulley 4 on the slide block 5 is delivered to the power of counterweight 8 on the slack-free tensioned lines 100 of needs; Under the prerequisite of counterweight 8 constant weight, can guarantee that the tensile force on the tensioned lines 100 is invariable.

At last, it is also to be noted that what more than enumerate only is a specific embodiment of the present utility model.Obviously, the utility model is not limited to above embodiment, and many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model all should be thought protection domain of the present utility model.

Claims

1. tightening device is characterized in that: comprise frame (1), in the left and right sides of frame (1) fixed pulley (2) is set respectively respectively, described each fixed pulley (2) all is rotatedly connected by a pulley anchor shaft (3) and frame (1); The slide block (5) that is positioned between two fixed pulleys (2) links to each other with frame (1) slip, and movable pulley (4) is set on slide block (5); Counterweight (8) links to each other with slide block (5).

2. tightening device according to claim 1 is characterized in that: groove (9) vertically is set on frame (1), and two fixed pulleys (2) are positioned at the left and right sides of groove (9), and the slide block (5) that is positioned at groove (9) slides with groove (9) and links to each other.

3. tightening device according to claim 2 is characterized in that: two fixed pulleys (2) are positioned at the left and right sides of groove (9) upper end, in the lower end of groove (9) stop screw (6) are set.

4. tightening device according to claim 3 is characterized in that: described counterweight (8) links to each other with slide block (5) by pipe link (7).