CN102601662A - Speed multiplying mechanism for pulley block of hydraulic cylinder - Google Patents

Abstract

The invention discloses a double-speed mechanism of a hydraulic cylinder pulley block, which comprises a frame, a transmission rope 1, a transmission rope 2 and a hydraulic cylinder 1, and fixed pulley 1, fixed pulley 2, fixed pulley 3 and fixed pulley 4 are rotatably connected to the frame. A movable pulley assembly 1 is arranged between the fixed pulley 3 and the fixed pulley 4, and the movable pulley assembly 1 includes the movable pulley 1 and the movable pulley 2 arranged in the frame chute 1, the movable pulley 1 and the movable pulley 2 are connected by a connecting piece 1, and one end of the transmission rope 1 is fixed On the movable pulley 1, the other end of the transmission rope 1 bypasses the fixed pulley 3, the movable pulley 1 and the fixed pulley in turn and fixes them on the workpiece, one end of the transmission rope 2 is fixed on the movable pulley 2, and the other end of the transmission rope 2 is wound in turn. Pass fixed pulley 4, movable pulley 2 and fixed pulley 2 and fix it on the workpiece. The double-speed mechanism of the hydraulic cylinder pulley group can amplify the movement of the workpiece to more than twice the movement of the hydraulic cylinder, thereby solving the problem of limited movement stroke of the original moving part.

Description

Double speed mechanism of hydraulic cylinder pulley block

technical field

The invention relates to a speed-multiplication mechanism, in particular to a hydraulic cylinder pulley group speed-multiplication mechanism.

Background technique

The performance of the feed mechanism of the machine tool directly affects the quality of the processed workpiece. Whether the working device of some construction machinery can move quickly determines the work efficiency and quality of such machinery.

There are two types of hydraulic cylinder feed mechanisms commonly used in China:

1. Hydraulic cylinder single feed mechanism. The feed mechanism has the advantages of simple structure, good hydraulic cylinder stress, reliable operation and simple operation. However, the space occupied by this feeding mechanism is relatively large, which is not convenient for arrangement and installation.

2. Hydraulic cylinder double speed mechanism. The moving speed and stroke of the workpiece in this feeding mechanism are twice the corresponding parameters of the hydraulic cylinder, which can reduce the space occupied to a certain extent.

At present, the double-speed mechanism has been widely used in the feed of drilling rigs, the feed of machine tools, etc. Although it can solve the problem of space layout to a certain extent, the setting method of this double-speed mechanism is single, and the use effect is not good.

Contents of the invention

The object of the present invention is to overcome the shortcomings in the above-mentioned prior art, and provide a hydraulic cylinder pulley block multi-speed mechanism. The double-speed mechanism of the pulley group of the hydraulic cylinder can amplify the movement of the workpiece to more than twice the movement of the hydraulic cylinder, thereby solving the problem of the limited movement stroke of the original moving part, reducing the production cost and saving space.

In order to achieve the above object, the technical solution adopted in the present invention is: a hydraulic cylinder pulley block double-speed mechanism, which is characterized in that: it includes a frame, a transmission rope 1, a transmission rope 2 and a hydraulic cylinder 1, and a fixed pulley 1 is rotatably connected to the frame. , fixed pulley two, fixed pulley three and fixed pulley four, described fixed pulley three is positioned between fixed pulley one and fixed pulley two, described fixed pulley four is positioned between fixed pulley three and fixed pulley two, and described fixed pulley three A movable pulley assembly 1 is arranged between the fixed pulley 4, and the movable pulley assembly 1 includes a movable pulley 1 and a movable pulley 2 arranged in the frame chute 1, and the movable pulley 1 and the movable pulley 2 can be driven by the hydraulic cylinder 1. Moving pulley 1 and moving pulley 2 are connected by connecting piece 1 that moves in frame chute 1. Both moving pulley 1 and moving pulley 2 are connected to connecting piece 1 in rotation, and one end of the transmission rope 1 is fixed on moving pulley 1. The other end of the rope one bypasses the fixed pulley three, the movable pulley one and the fixed pulley one and is fixed on the workpiece between the fixed pulley one and the fixed pulley two in turn, and one end of the transmission rope two is fixed on the movable pulley two. The other end of transmission rope two walks around fixed pulley four, movable pulley two and fixed pulley two successively and is fixed on the described workpiece.

The above-mentioned hydraulic cylinder pulley block speed-multiplication mechanism is characterized in that: the movable pulley assembly 2 and the hydraulic cylinder 2 located on the side of the movable pulley assembly 2 are arranged above the movable pulley assembly 1; The movable pulley three and the movable pulley four, the movable pulley three and the movable pulley four are connected by the connecting piece two which can drive the movable pulley three and the movable pulley four to move in the frame chute two under the drive of the hydraulic cylinder two, the movable pulley three and the movable pulley four Both are connected to the connecting piece 2 in rotation, and the top of the moving pulley assembly 2 is provided with a fixed pulley 5 and a fixed pulley 6 which are rotatably connected to the frame, and the fixed pulley 5 is located on the side of the moving pulley 3 close to the fixed pulley 1. The fixed pulley 6 is located on the side of the movable pulley 4 close to the fixed pulley 2, and one end of the transmission rope 1 is fixed on the movable pulley 1, and the other end of the transmission rope 1 bypasses the fixed pulley 3, the movable pulley 1, the fixed pulley 1, and the movable pulley successively. Three, the fixed pulley five is fixed on the workpiece between the fixed pulley five and the fixed pulley six, one end of the transmission rope two is fixed on the movable pulley two, and the other end of the transmission rope two walks around the fixed pulley four, Two movable pulleys, two fixed pulleys, four movable pulleys and six fixed pulleys are fixed on the workpiece.

The above-mentioned double speed mechanism of the hydraulic cylinder pulley block is characterized in that: the first connecting piece is a triangular frame, and the first corner of the connecting piece 1 is provided with a transmission shaft 1 which is rotationally connected with the center of the moving pulley 1, and the connecting piece 1 The second corner of one is provided with a transmission shaft two which is rotationally connected with the center of movable pulley two, and the piston rod of said hydraulic cylinder one is fixedly connected with the third corner of said connecting piece one.

The above-mentioned double speed mechanism of the hydraulic cylinder pulley block is characterized in that: the second connecting member is a rod-shaped structure arranged horizontally, the second hydraulic cylinder is arranged horizontally, and the second hydraulic cylinder and the second connecting member are located on the same horizontal plane.

The above-mentioned double-speed mechanism of the pulley block of the hydraulic cylinder is characterized in that: the fifth fixed pulley is located directly above the first fixed pulley, and the sixth fixed pulley is located directly above the second fixed pulley.

The above-mentioned double-speed mechanism of the hydraulic cylinder pulley block is characterized in that: the first hydraulic cylinder is located under the third fixed pulley.

The above-mentioned double-speed mechanism of the hydraulic cylinder pulley block is characterized in that: the first transmission rope and the second transmission rope are made of steel wire ropes.

Compared with the prior art, the present invention has the following advantages:

1. The structure of the present invention is simple, the design is novel and reasonable, and it is easy to install.

2. The double-speed mechanism of the hydraulic cylinder pulley block of the present invention can be adapted to the limited vertical space, and the double-speed mechanism of the hydraulic cylinder pulley block is arranged in the horizontal direction, so as to realize the double-speed function.

3. The present invention can not only realize the double-speed feeding of the workpiece, but also realize the triple-speed feeding of the workpiece when the vertical space permits, greatly improving the work efficiency and achieving good results.

4. The implementation cost of the present invention is low, the use effect is good, and it is convenient to popularize and use.

To sum up, the present invention has simple structure, novel and reasonable design, high working reliability and long service life, and can amplify the movement of the workpiece to more than twice the movement of the hydraulic cylinder, thus solving the problem of limited movement stroke of the original moving part , while reducing the production cost, saving space, the use effect is good, and it is easy to popularize and use.

The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

Description of drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a second specific embodiment of the present invention.

Explanation of reference signs:

1-fixed pulley one; 2-fixed pulley three; 3-drive rope one;

4-moving pulley one; 5-moving pulley two; 6-transmission rope two;

7-fixed pulley four; 8-fixed pulley two; 9-connecting piece one;

10-hydraulic cylinder one; 11-moving pulley three; 12-moving pulley four;

13-Connection two; 14-Hydraulic cylinder two; 15-Fixed pulley five;

16-fixed pulley six; 17-workpiece.

Detailed ways

Example 1

The hydraulic cylinder pulley block double-speed mechanism as shown in Figure 1 comprises frame, transmission rope one 3, transmission rope two 6 and hydraulic cylinder one 10, and described frame is rotationally connected with fixed pulley one 1, fixed pulley two 8, fixed pulley two. Pulley three 2 and fixed pulley four 7, described fixed pulley three 2 is positioned between fixed pulley one 1 and fixed pulley two 8, and described fixed pulley four 7 is positioned between fixed pulley three 2 and fixed pulley two 8, and described fixed pulley The below of pulley three 2 is provided with hydraulic cylinder one 10, is provided with movable pulley assembly one between described fixed pulley three 2 and fixed pulley four 7, and described movable pulley assembly one comprises movable pulley one 4 and being arranged in frame chute one Moving pulley two 5, described moving pulley one 4 and moving pulley two 5 are connected by a connector one 9 that can drive moving pulley one 4 and moving pulley two 5 in frame chute one under the drive of hydraulic cylinder one 10, and described moving pulley one 4 and movable pulley two 5 are all connected with connector one 9 in rotation, and one end of said transmission rope one 3 is fixed on the movable pulley one 4, and the other end of said transmission rope one 3 bypasses fixed pulley three 2, movable pulley one 4 and The fixed pulley one 1 is also fixed on the workpiece 17 between the fixed pulley one 1 and the fixed pulley two 8, one end of the transmission rope two 6 is fixed on the movable pulley two 5, and the other end of the transmission rope two 6 is wound successively Pass fixed pulley four 7, movable pulley two 5 and fixed pulley two 8 and be fixed on the workpiece 17, the concrete winding method is that one end of the transmission rope one 3 is fixed on the outer surface of the movable pulley one 4, and the transmission The other end of the rope one 3 goes around the left side of the fixed pulley three 2 clockwise, the right side of the movable pulley one 4 clockwise, the left side of the fixed pulley one 1 clockwise and is fixed on the fixed pulley one 1 and the fixed pulley one 1 On the workpiece 17 between the pulley two 8, one end of the transmission rope two 6 is fixed on the outer surface of the movable pulley two 5, and the other end of the transmission rope two 6 goes around the right side of the fixed pulley four 7 counterclockwise, Go around the left side of movable pulley two 5 counterclockwise, go around the right side of fixed pulley two 8 counterclockwise and be fixed on the described workpiece 17. Preferably, the first transmission rope 3 and the second transmission rope 6 are steel wire ropes. Described hydraulic cylinder one 10 is positioned at the below of fixed pulley three 2. The size of fixed pulley one 1 and fixed pulley two 8 is equal, and the size of described movable pulley one 4 and movable pulley two 5 is equal and its size is all less than the size of fixed pulley one 1 and fixed pulley two 8, and described fixed pulley three 2 and fixed pulley The size of pulley four 7 is equal and its size is all less than the size of movable pulley one 4 and movable pulley two 5. The five fixed pulleys 15 are positioned directly above the one fixed pulley 1, and the six fixed pulleys 16 are positioned directly above the two fixed pulleys 8.

In this embodiment, as shown in Figure 1, the connecting piece 9 is a component extending in the vertical direction, its lower part is connected with the outer end of the piston rod of the hydraulic cylinder 10, and its upper part is connected with the movable pulley 4 and the movable pulley 2 at the same time. 5, preferably, the connecting piece 9 is a triangular frame, and the first corner of the connecting piece 9 is provided with a transmission shaft 1 connected to the center of the movable pulley 4 in rotation, and the connecting piece 9 is a triangular frame. The second corner of the first 9 is provided with a transmission shaft 2 that is rotatably connected to the center of the movable pulley 2 5, and the piston rod of the hydraulic cylinder 1 10 is fixedly connected with the third corner of the connector 9 . By designing the connector one 9 as a triangular frame, the triangular frame is an inverted triangular frame, and the first and second angles of the connector one 9 are respectively connected with the movable pulley one 4 and the movable pulley two 5, the connector one 9 The third angle (that is, the corner at the bottom) is connected with the hydraulic cylinder one 10, which cleverly solves the problem of fixed pulley one 1, fixed pulley three 2, movable pulley one 4, movable pulley two 5, fixed pulley four 7 and fixed pulley two When 8 is arranged in a horizontal straight line, the connection between hydraulic cylinder one 10 and connector one 9 saves space. The connecting piece 9 is designed as a triangular frame, which reduces the weight of the connecting piece 9 and improves the power output of the hydraulic cylinder 10 .

During use, as shown in Figure 1, in this embodiment, the outer end of the piston rod of hydraulic cylinder one 10 is fixedly connected with the third corner of the connector one 9, when the piston rod of hydraulic cylinder one 10 is pushed to the right to connect When the bottom of piece one 9, connecting piece one 9 drives movable pulley one 4 and movable pulley two 5 to move to the right in frame chute one, thereby drives transmission rope one 3 and transmission rope two 6 to move to the left, and transmission rope one 3 and transmission Rope two 6 drives workpiece 17 to move to the left, and the moving speed and stroke of workpiece 17 are twice of hydraulic cylinder one 10 piston moving speed and stroke. In this embodiment, when the hydraulic cylinder pulley set double speed mechanism is used when the space in the vertical direction is limited, by laying out the hydraulic cylinder pulley set double speed mechanism in the horizontal direction, the moving speed and stroke of the workpiece 17 are hydraulic cylinder-10 pistons. The double of moving speed and stroke has reached the effect that workpiece 17 is effectively fed.

Example 2

As shown in Figure 2, the difference between this embodiment and Embodiment 2 is that: a movable pulley assembly 2 and a hydraulic cylinder 14 located on one side of the movable pulley assembly 2 are arranged above the movable pulley assembly 1, and the movable pulley assembly 2 includes The movable pulley three 11 and the movable pulley four 12 that are arranged in the frame chute two and can move along the frame chute two, the movable pulley three 11 and the movable pulley four 12 can drive the movable pulley three 11 and the movable pulley four 12 through the drive of the hydraulic cylinder two 14 Moving pulley 4 12 is connected with connecting piece 2 13 that moves in frame chute 2, and described moving pulley 3 11 and moving pulley 4 12 are all connected with connecting piece 2 13 in rotation, and the top of described moving pulley assembly 2 is provided with a rotating connection on the frame The fixed pulley five 15 and the fixed pulley six 16 on the top, the fixed pulley five 15 is located at the side of the movable pulley three 11 close to the fixed pulley one 1, and the fixed pulley six 16 is located at the side of the movable pulley four 12 near the fixed pulley two 8, One end of the transmission rope one 3 is fixed on the movable pulley one 4, and the other end of the transmission rope one 3 bypasses the fixed pulley three 2, the movable pulley one 4, the fixed pulley one 1, the movable pulley three 11, the fixed pulley five 15 and Fixed on the workpiece 17 between the fixed pulley five 15 and the fixed pulley six 16, one end of the transmission rope two 6 is fixed on the movable pulley two 5, and the other end of the transmission rope two 6 bypasses the fixed pulley four 7 in turn , two movable pulleys 5, two fixed pulleys 8, four movable pulleys 12 and six fixed pulleys 16 are fixed on the workpiece 17, and the specific winding method is that one end of the transmission rope one 3 is fixed on the outer surface of the movable pulley one 4 , the other end of the transmission rope one 3 goes around the left side of the fixed pulley three 2 clockwise, the right side of the movable pulley one 4 clockwise, the left side of the fixed pulley one 1 clockwise, and the counterclockwise The right side of the movable pulley three 11, the left side of the fixed pulley five 15 clockwise and fixed on the workpiece 17, one end of the transmission rope two 6 is fixed on the outer surface of the movable pulley two 5, the transmission rope two 6 The other end goes around the right side of fixed pulley four 7 counterclockwise, the left side of movable pulley two 5 counterclockwise, the right side of fixed pulley two 8 counterclockwise, the left side of movable pulley four 12 clockwise, The hour hand walks around the right side of the fixed pulley six 16 and is fixed on the workpiece 17 .

During use, as shown in Figure 2, when hydraulic cylinder one 10 is at rest and the piston rod of hydraulic cylinder two 14 stretches out to the right in this embodiment, moving pulley three 11 and movable pulley four 12 move to the right through connecting piece two 13 Movement to the right, thereby driving the transmission rope 1 3 and the transmission rope 2 6 to move to the left, the transmission rope 1 3 and the transmission rope 2 6 drive the workpiece 17 to move to the left, when the stroke of the piston rod of the hydraulic cylinder 2 14 reaches the maximum to the right, Hydraulic cylinder 2 14 stops working, and the moving speed and stroke of workpiece 17 are twice of hydraulic cylinder 14 moving speed and stroke. 4 and movable pulley 2 5 move to the right in the rack chute 1, thereby driving the transmission rope 1 3 and the transmission rope 2 6 to move to the left, the transmission rope 1 3 and the transmission rope 2 6 drive the workpiece 17 to move to the left, and the workpiece 17 moves The speed and stroke are three times that of hydraulic cylinder-10 piston moving speed and stroke. This embodiment can not only realize the double speed of the workpiece 17 feeding, but also can realize the triple speed of the workpiece 17 feeding, and its use effect is good, and the working efficiency is improved.

The above are only preferred embodiments of the present invention, and do not limit the present invention in any way. Any simple modifications, changes and equivalent structural transformations made to the above embodiments according to the technical essence of the present invention still belong to the technology of the present invention. within the scope of protection of the scheme.

Claims (7)

1. The double-speed mechanism of the hydraulic cylinder pulley block is characterized in that: it includes a frame, a transmission rope one (3), a transmission rope two (6) and a hydraulic cylinder one (10), and the frame is rotationally connected with a fixed pulley one (1 ), fixed pulley two (8), fixed pulley three (2) and fixed pulley four (7), described fixed pulley three (2) are positioned between fixed pulley one (1) and fixed pulley two (8), described Fixed pulley four (7) is located between fixed pulley three (2) and fixed pulley two (8), and movable pulley assembly one is arranged between said fixed pulley three (2) and fixed pulley four (7), and said movable pulley assembly One includes movable pulley one (4) and movable pulley two (5) arranged in the frame chute one, and described movable pulley one (4) and movable pulley two (5) can drive the movable pulley under the drive of hydraulic cylinder one (10) One (4) is connected with the connecting piece one (9) that moves in the frame chute one with the moving pulley two (5), and the moving pulley one (4) and the moving pulley two (5) are all connected in rotation with the connecting piece one (9) , one end of the transmission rope one (3) is fixed on the movable pulley one (4), and the other end of the transmission rope one (3) goes around the fixed pulley three (2), the movable pulley one (4) and the fixed pulley one successively (1) and be fixed on the workpiece (17) between fixed pulley one (1) and fixed pulley two (8), one end of said drive rope two (6) is fixed on the movable pulley two (5), said The other end of transmission rope two (6) walks around fixed pulley four (7), movable pulley two (5) and fixed pulley two (8) successively and is fixed on the described workpiece (17). 2. The hydraulic cylinder pulley block multiplier mechanism according to claim 1, characterized in that: a movable pulley assembly two and a hydraulic cylinder two (14) positioned at one side of the movable pulley assembly are arranged above the movable pulley assembly one, and the movable pulley assembly Two include movable pulley three (11) and movable pulley four (12) that are arranged in frame chute two, described movable pulley three (11) and movable pulley four (12) can drive movable pulley under the drive of hydraulic cylinder two (14) Three (11) and four movable pulleys (12) are connected with two connecting pieces (13) that move in the frame chute two, and the three moving pulleys (11) and four moving pulleys (12) are all connected in rotation with connecting piece two (13) , the top of the movable pulley assembly two is provided with five fixed pulleys (15) and six fixed pulleys (16) that are rotatably connected to the frame, and the five fixed pulleys (15) are located at the three fixed pulleys (11) near the fixed pulley one ( 1), the fixed pulley six (16) is located at the side of the movable pulley four (12) near the fixed pulley two (8), and one end of the transmission rope one (3) is fixed on the movable pulley one (4), The other end of described transmission rope one (3) walks around fixed pulley three (2), movable pulley one (4), fixed pulley one (1), movable pulley three (11), fixed pulley five (15) successively and is fixed on the On the workpiece (17) between the fixed pulley five (15) and the fixed pulley six (16), one end of the transmission rope two (6) is fixed on the movable pulley two (5), and the transmission rope two (6) The other end walks around four fixed pulleys (7), two movable pulleys (5), two fixed pulleys (8), four movable pulleys (12) and six fixed pulleys (16) and is fixed on the workpiece (17) successively. 3. The hydraulic cylinder pulley block double-speed mechanism according to claim 1 or 2, characterized in that: the first connecting piece (9) is a triangular frame, and the first corner of the connecting piece (9) is provided with a The transmission shaft one connected to the center of movable pulley one (4), the second angle of said connector one (9) is provided with the transmission shaft two connected with the center rotation of movable pulley two (5), said hydraulic cylinder one The piston rod of (10) is fixedly connected with the third angle of said connector one (9). 4. The double-speed mechanism of the hydraulic cylinder pulley block according to claim 2, characterized in that: the second connecting piece (13) is a rod-shaped structure arranged horizontally, the second hydraulic cylinder (14) is arranged horizontally, and the Two hydraulic cylinders (14) and two connectors (13) are located on the same horizontal plane. 5. The multi-speed mechanism of the hydraulic cylinder pulley block according to claim 2, characterized in that: said fixed pulley five (15) is located directly above fixed pulley one (1), and said fixed pulley six (16) is located on fixed pulley two (8) directly above. 6. The hydraulic cylinder pulley block multiple speed mechanism according to claim 1 or 2, characterized in that: the hydraulic cylinder one (10) is located below the fixed pulley three (2). 7. The double-speed mechanism of the hydraulic cylinder pulley block according to claim 1 or 2, characterized in that: the first transmission rope (3) and the second transmission rope (6) are steel wire ropes.

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