CN202507108U - Hydraulic cylinder speed multiplication mechanism - Google Patents

Abstract

The utility model discloses a hydraulic cylinder double-speed mechanism, which comprises a frame, a transmission rope 1, a transmission rope 2, a moving pulley assembly 1, a hydraulic cylinder 1, a fixed pulley 1 and a fixed pulley 2, and a hydraulic cylinder 2 is arranged under the hydraulic cylinder 1. The movable pulley assembly 2 is arranged below the movable pulley assembly 1, and the movable pulley assembly 2 includes the movable pulley 3 and the movable pulley 4 arranged in the rack chute 2. One end is fixed on the frame, the other end of the transmission rope 1 bypasses the movable pulley 3, the movable pulley 1 and the fixed pulley in turn and is fixed on the workpiece, and the other end of the transmission rope 2 bypasses the movable pulley 4, the movable pulley 2 and the fixed pulley 2 in sequence and fixed on the workpiece. The double-speed mechanism of the hydraulic cylinder solves the problem of limited motion stroke of the original moving part, reduces the production cost and saves space at the same time.

Description

A hydraulic cylinder double speed mechanism

technical field

The utility model relates to a double-speed mechanism, in particular to a hydraulic cylinder double-speed 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.

Utility model content

The purpose of the utility model is to overcome the shortcomings in the above-mentioned prior art, and to provide a hydraulic cylinder double-speed mechanism. The double-speed mechanism 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 purpose, the technical solution adopted by the utility model is: a hydraulic cylinder double speed mechanism, including a frame, a transmission rope 1, a transmission rope 2, and a movable pulley assembly 1, a hydraulic cylinder 1, and a fixed pulley arranged on the frame and the fixed pulley two, the fixed pulley one and the fixed pulley two are rotationally connected on the frame and are located above the movable pulley assembly one, and the movable pulley assembly one includes the movable pulley one and the movable pulley two arranged in the frame chute one, so The movable pulley 1 and the movable pulley 2 are connected by the connecting piece 1 which can drive the moving pulley 1 and the moving pulley 2 to move in the frame chute 1 under the drive of the hydraulic cylinder 1, and the moving pulley 1 and the moving pulley 2 are connected to the connecting piece 1 in rotation, It is characterized in that a hydraulic cylinder 2 is arranged under the hydraulic cylinder 1, a movable pulley assembly 2 is arranged under the movable pulley assembly 1, and the movable pulley assembly 2 includes movable pulley 3 and movable pulley 4 arranged in the frame chute 2 The movable pulley 3 and the movable pulley 4 are connected by the connecting piece 2 which can drive the moving pulley 3 and the moving pulley 4 to move in the frame chute 2 under the drive of the hydraulic cylinder 2, and the moving pulley 3 and the moving pulley 4 are all rotated with the connecting piece 2 connection, one end of the transmission rope one and one end of the transmission rope two are fixed on the frame and the fixed points of the transmission rope one and the transmission rope two and the frame are all located below the connector two, and the transmission rope one The other end of the transmission rope bypasses three movable pulleys, one movable pulley and one fixed pulley and is fixed on the workpiece between fixed pulley one and two fixed pulleys. The other end of the transmission rope two bypasses four movable pulleys, two movable pulleys and two Pulley two and be fixed on the described workpiece.

The above-mentioned double-speed mechanism of a hydraulic cylinder is characterized in that: the connecting piece 1 and the connecting piece 2 are rod-shaped structures arranged horizontally.

The above-mentioned hydraulic cylinder double speed mechanism is characterized in that: the first hydraulic cylinder and the second hydraulic cylinder are arranged horizontally, the first connecting piece and the first hydraulic cylinder are located on the same horizontal plane, and the second connecting piece and the second hydraulic cylinder are located same level.

The above-mentioned double-speed mechanism for a hydraulic cylinder is characterized in that: the distance between the third movable pulley and the fourth movable pulley is greater than the distance between the first movable pulley and the second movable pulley.

The above-mentioned double-speed mechanism for a hydraulic cylinder is characterized in that: fixed pulley 3 and fixed pulley 4, which are rotatably connected to the frame, are arranged between the movable pulley assembly 1 and movable pulley assembly 2, and the fixed pulley 3 is located close to the movable pulley 3. One side of fixed pulley one, described fixed pulley four is positioned at the side of movable pulley four close to fixed pulley two, one end of described transmission rope one and one end of transmission rope two are all fixed on the frame, and described transmission rope one and The fixed point of the frame is located below the hydraulic cylinder 2, the fixed point of the transmission rope 2 and the frame is located below the fixed pulley 4, and the other end of the transmission rope 1 bypasses the movable pulley 3, the fixed pulley 3 and the movable pulley 1 in sequence It is fixed on the workpiece together with the fixed pulley, and the other end of the transmission rope two walks around the movable pulley four, the fixed pulley four, the movable pulley two and the fixed pulley two successively and is fixed on the workpiece.

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

1. The utility model has simple structure, novel and reasonable design, and is easy to install.

2. The double-speed mechanism of the hydraulic cylinder of the utility model is suitable for situations where the horizontal space or vertical space is limited, such as the stroke of the hydraulic cylinder is too long and there is not enough space to arrange it, or the cost of the hydraulic cylinder with a long stroke is too high. Use a short-stroke hydraulic cylinder to cooperate with the movable pulley and the fixed pulley to replace the long-stroke hydraulic cylinder to realize the double-speed function.

3. The utility model has the advantages of low cost, good application effect and convenient popularization and use.

To sum up, the utility model has the advantages of simple structure, novel and reasonable design, high working reliability and long service life. Problems, while reducing production costs, saving space, its use effect is good, easy to popularize and use.

The technical solutions of the present utility model will be further described in detail through the drawings and embodiments below.

Description of drawings

Fig. 1 is a schematic structural view of the first embodiment of the utility model.

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-hydraulic cylinder one; 3-hydraulic cylinder two;

4-moving pulley three; 5-connecting piece two; 6-moving pulley four;

7-moving pulley two; 8-fixed pulley two; 9-transmission rope two;

10-connector one; 11-moving pulley one; 12-workpiece;

13-drive rope one; 14-fixed pulley three; 15-fixed pulley four.

Detailed ways

Example 1

A hydraulic cylinder multiplier mechanism as shown in Figure 1, comprising a frame, a transmission rope one 13, a transmission rope two 9, and a movable pulley assembly one, a hydraulic cylinder one 2, a fixed pulley one 1 and a fixed pulley two arranged on the frame 8. The fixed pulley one 1 and the fixed pulley two 8 are rotatably connected to the frame and located above the movable pulley assembly one, specifically, the fixed pulley one 1 is located on the upper left of the movable pulley assembly one, and the fixed pulley two 8 Located on the upper right of movable pulley assembly one, said movable pulley assembly one includes movable pulley one 11 and movable pulley two 7 which are arranged in frame chute one and can move along frame chute one, said movable pulley one 11 and movable pulley two 7 pass through Under the drive of hydraulic cylinder one 2, the connector one 10 that can drive movable pulley one 11 and movable pulley two 7 to move in frame chute one is connected, and described movable pulley one 11 and movable pulley two 7 are all rotatably connected with connector one 10, The cylinder body of the hydraulic cylinder one 2 is fixed on the frame, and the outer end of the piston rod of the hydraulic cylinder one 2 is connected with the connector one 10 .

As shown in Figure 1, the preferred method is that the connecting piece 10 is a rod-shaped structure arranged horizontally, and one end of the connecting piece 10 is provided with a transmission shaft 1 that is rotatably connected to the center of the moving pulley 11. The other end of the connecting piece 10 is provided with a transmission shaft 2 which is rotationally connected with the center of the moving pulley 2 7 , and the connecting piece 10 and the hydraulic cylinder 1 2 are located at the same level.

As shown in Figure 1, hydraulic cylinder two 3 is arranged below the hydraulic cylinder one 2, and a movable pulley assembly two is arranged under the movable pulley assembly one, and the movable pulley assembly two is arranged in the frame chute two and can Moving pulley 3 4 and moving pulley 4 6 moving along frame chute 2, said moving pulley 3 4 and moving pulley 4 6 can drive moving pulley 3 4 and moving pulley 4 6 in the frame chute 2 under the drive of hydraulic cylinder 2 3 The movable connector two 5 is connected, the movable pulley three 4 and the movable pulley four 6 are all rotationally connected with the connector two 5, the outer end of the piston rod of the hydraulic cylinder two 3 is connected with the connector two 5, and the movable pulley one 11 Located on the upper right of movable pulley three 4, the fixed pulley one 1 is positioned on the upper left of movable pulley one 11, the movable pulley two 7 is positioned on the upper left of movable pulley four 6, and the fixed pulley two 8 is positioned on the upper right of movable pulley two 7, so One end of the transmission rope one 13 and one end of the transmission rope two 9 are all fixed on the frame, and the fixed points of the transmission rope one 13 and the transmission rope two 9 and the frame are all located below the connector two 5, and the transmission The other end of rope one 13 walks around movable pulley three 4, movable pulley one 11, fixed pulley one 1 successively and is fixed on the workpiece 12 between fixed pulley one 1 and fixed pulley two 8, and the other end of said transmission rope two 9 Go around movable pulley four 6, movable pulley two 7, fixed pulley two 8 successively and be fixed on the described workpiece 12, the specific winding method of transmission rope one 13 and transmission rope two 9 is, the fixing of described transmission rope one 13 and frame point and transmission rope two 9 and the fixed point of the frame are close to each other and are all located directly below the connector two 5, and the other end of the transmission rope one 13 goes around the left side of the movable pulley three 4 clockwise and counterclockwise The right side of movable pulley one 11, clockwise around the left side of fixed pulley one 1 and fixed on the workpiece 12 between fixed pulley one 1 and fixed pulley two 8, the other end of the transmission rope two 9 is counterclockwise in turn Go around the right side of movable pulley four 6, go around the left side of movable pulley two 7 clockwise, go around the right side of fixed pulley two 8 counterclockwise and be fixed on the workpiece 12, the transmission rope one 13 and the transmission rope two 9 are arranged in an "S" shape. Preferably, the first transmission rope 13 and the second transmission rope 9 are steel wire ropes.

As shown in Figure 1, the preferred way is that the first connecting piece 10 and the second connecting piece 5 are rod-shaped structures arranged horizontally, and one end of the second connecting piece 5 is provided with a transmission that is rotationally connected with the center of the movable pulley three 4. Shaft 3, the other end of the connecting piece 2 5 is provided with a transmission shaft 4 connected to the center of the movable pulley 6 rotatably, and the connecting piece 2 5 and the hydraulic cylinder 2 3 are located on the same horizontal plane. The first connector 10 and the first hydraulic cylinder 2 are located on the same level, and the second connector 5 is located on the same horizontal plane as the second hydraulic cylinder 3, so that the power effect of the first hydraulic cylinder 2 and the second hydraulic cylinder 3 can be maximized. When the cylinder double speed mechanism is in operation, the interference between the various components is minimal.

As shown in Figure 1, the distance between the movable pulley three 4 and the movable pulley four 6 is greater than the distance between the movable pulley one 11 and the movable pulley two 7, so that the movable pulley three 4 is located on the side of the movable pulley one 11 near the fixed pulley one 1, The four movable pulleys 6 are located on the side of the two movable pulleys 7 close to the two fixed pulleys 8, so that the tension of the transmission rope one 13 between the three movable pulleys 4 and the one 11 movable pulleys is strengthened when the hydraulic cylinder double speed mechanism is in use, And be positioned at the tension force of transmission rope two 9 between movable pulley four 6 and movable pulley two 7, improve transmission rope one 13 and transmission rope two 9 operating efficiency, its working reliability is high.

When this embodiment is in use, as shown in Figure 1, the hydraulic cylinder two 3 remains stationary, the piston rod of the hydraulic cylinder one 2 pushes the joint one 10 to move to the right, and the joint one 10 drives the movable pulley one 11 and the movable pulley two 7 on the machine. The frame chute one moves to the right, thereby driving the transmission rope one 13 and the transmission rope two 9 between the fixed pulley one 1 and the fixed pulley two 8 to move to the left, and the transmission rope one 13 and the transmission rope two 9 drive the workpiece 12 to move to the left , The moving speed and the moving stroke of the workpiece 12 are twice the moving speed and the running stroke of the hydraulic cylinder 1-2. When the stroke of hydraulic cylinder one 2 reaches the maximum, it stops moving. At this time, hydraulic cylinder two 3 starts to work. The piston rod of hydraulic cylinder two 3 moves to the left, and the piston rod of hydraulic cylinder two 3 drives connecting piece two 5 to move to the left. Part two 5 drives movable pulley three 4 and movable pulley four 6 to move to the left in frame chute one, thereby driving transmission rope one 13 and transmission rope two 9 between fixed pulley one 1 and fixed pulley two 8 to move to the left, and the transmission rope One 13 and transmission rope two 9 drive the workpiece 12 to move to the left, and the moving speed and running stroke of the workpiece 12 are twice of the piston moving speed and running stroke in the hydraulic cylinder two 3 . The balance of the first movable pulley assembly and the second movable pulley assembly depends on the tension of the first transmission rope 13 and the second transmission rope 9 . This embodiment is applicable to the special situation when the horizontal space is sufficient but the vertical space is not enough to arrange multiple sets of pulley blocks, so as to solve the problem of limited motion stroke of the original moving part, reduce the production cost and save space at the same time.

Example 2

As shown in Figure 2, the difference between this embodiment and Embodiment 1 is that a fixed pulley three 14 and a fixed pulley four 15 are arranged between the movable pulley assembly one and the movable pulley assembly two, and the fixed pulley three 14 and the fixed pulley assembly two The fourth pulley 15 is all rotatably connected on the frame, the fixed pulley three 14 is located at the side of the movable pulley three 4 near the fixed pulley one 1, and the fixed pulley four 15 is positioned at the side of the movable pulley four 6 near the fixed pulley two 8, namely Described fixed pulley three 14 is positioned at the left side of movable pulley three 4, and described fixed pulley four 15 is positioned at the right side of movable pulley four 6, and described movable pulley one 11 is positioned at the right side of fixed pulley three 14, and fixed pulley one 1 is positioned at movable pulley one 11 The left side of the movable pulley two 7 is located on the left side of the fixed pulley four 15, and the fixed pulley two 8 is positioned on the right side of the movable pulley two 7, and one end of the transmission rope one 13 and one end of the transmission rope two 9 are all fixed on on the frame, and the fixed point of the transmission rope one 13 and the frame is located below the hydraulic cylinder two 3, and the fixed point of the transmission rope two 9 and the frame is located under the fixed pulley four 15, that is, the transmission rope The fixed point of one 13 and frame is positioned at the left side of moving pulley three 4, and the fixed point of described driving rope two 9 and frame is positioned at the right side of moving pulley four 6, and the other end of described driving rope one 13 walks around moving pulley three successively 4. Fixed pulley three 14, movable pulley one 11 and fixed pulley one 1 are fixed on the workpiece 12, and the other end of the transmission rope two 9 bypasses movable pulley four 6, fixed pulley four 15, movable pulley two 7 and fixed pulley two successively 8 and fixed on the workpiece 12, the specific winding method is that the other end of the transmission rope one 13 goes around the right side of the movable pulley three 4 counterclockwise, goes around the left side of the fixed pulley three 14 clockwise, and goes around the counterclockwise The right side of overrunning pulley one 11 and the left side of fixed pulley one 1 are passed clockwise and fixed on the workpiece 12. The other end of the transmission rope two 9 goes around the left side of movable pulley four 6 clockwise and counterclockwise Pass the right side of fixed pulley four 15, go around the left side of movable pulley two 7 clockwise, go around the right side of fixed pulley two 8 counterclockwise and be fixed on the workpiece 12. The first transmission rope 13 and the second transmission rope 9 are arranged in an "S" shape.

When in use, as shown in Figure 2, the hydraulic cylinder 2 3 in this embodiment remains stationary, the piston rod of the hydraulic cylinder 1 2 pushes the connecting piece 10 to move to the right, and the connecting piece 10 drives the moving pulley 11 and the moving pulley 2 7 Move in frame chute one, thereby drive transmission rope one 13 and transmission rope two 9 to move to the left, transmission rope one 13 and transmission rope two 9 drive workpiece 12 to move to the left, and the moving speed of workpiece 12 and motion stroke are Two times the stroke of the piston in hydraulic cylinder one 2, when the stroke of hydraulic cylinder one 2 reaches the maximum, it stops moving. 4 and movable pulley 4 6 move along the frame chute 2, drive transmission rope 1 13 to move to the left through movable pulley 3 4, fixed pulley 3 14, movable pulley 11 and fixed pulley 1, thereby driving workpiece 12 to move to the left, at this time , The moving speed and the running stroke of the workpiece 12 are twice the moving speed and the running stroke of the hydraulic cylinder 2 and 3. This embodiment is suitable for layout when the horizontal space is limited, realizes the double-speed feeding of the workpiece 12, improves work efficiency, and saves space.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any simple modifications, changes and equivalent structural transformations made to the above embodiments according to the technical essence of the present utility model still belong to Within the scope of protection of the technical solution of the utility model.

Claims (5)

1. A hydraulic cylinder double-speed mechanism, comprising a frame, a transmission rope one (13), a transmission rope two (9) and a movable pulley assembly one, a hydraulic cylinder one (2), and a fixed pulley one (1) arranged on the frame and fixed pulley two (8), the fixed pulley one (1) and the fixed pulley two (8) are rotatably connected on the frame and are positioned at the top of the movable pulley assembly one, and the movable pulley assembly one includes a Moving pulley one (11) and moving pulley two (7) inside, described moving pulley one (11) and moving pulley two (7) can drive moving pulley one (11) and moving pulley two (7) under the drive of hydraulic cylinder one (2) ) is connected to the connecting piece one (10) that moves in the frame chute one, and the moving pulley one (11) and the moving pulley two (7) are all rotatably connected with the connecting piece one (10), and it is characterized in that: the hydraulic cylinder Two hydraulic cylinders (3) are arranged below one (2), and two movable pulley assemblies are arranged below the movable pulley assembly one, and the movable pulley assembly two includes movable pulley three (4) and movable pulleys arranged in the frame chute two Four (6), the movable pulley three (4) and the movable pulley four (6) can drive the movable pulley three (4) and the movable pulley four (6) to move in the frame chute two under the drive of the hydraulic cylinder two (3) The connecting piece two (5) is connected, and the moving pulley three (4) and the moving pulley four (6) are connected with the connecting piece two (5) in rotation, and one end of the driving rope one (13) and the driving rope two (9) One end of each is fixed on the frame and the fixed points of the transmission rope one (13) and the transmission rope two (9) and the frame are all located below the connector two (5), and the transmission rope one (13) The other end walks around movable pulley three (4), movable pulley one (11), fixed pulley one (1) successively and is fixed on the workpiece (12) between fixed pulley one (1) and fixed pulley two (8). The other end of said transmission rope two (9) walks around four movable pulleys (6), two movable pulleys (7), two fixed pulleys (8) and is fixed on the workpiece (12) successively. 2. A hydraulic cylinder speed-multiplier mechanism according to claim 1, characterized in that: the first connecting piece (10) and the second connecting piece (5) are rod-shaped structures arranged horizontally. 3. A hydraulic cylinder speed-multiplier mechanism according to claim 2, characterized in that: said hydraulic cylinder one (2) and hydraulic cylinder two (3) are arranged horizontally, and said connector one (10) and hydraulic cylinder Cylinder one (2) is located on the same horizontal plane, and said connecting piece two (5) is located on the same horizontal plane as hydraulic cylinder two (3). 4. A hydraulic cylinder multiplier mechanism according to claim 2 or 3, characterized in that: the distance between the movable pulley three (4) and the movable pulley four (6) is greater than that between the movable pulley one (11) and the movable pulley two (7 )the distance between. 5. A hydraulic cylinder speed-multiplier mechanism according to claim 1, characterized in that: fixed pulley three (14) and fixed pulley four, which are rotatably connected to the frame, are arranged between the movable pulley assembly one and the movable pulley assembly two (15), the fixed pulley three (14) is located at the side of the movable pulley three (4) close to the fixed pulley one (1), and the fixed pulley four (15) is located at the movable pulley four (6) close to the fixed pulley two (8) One side of the transmission rope one (13) and one end of the transmission rope two (9) are all fixed on the frame, and the fixed point between the transmission rope one (13) and the frame is located at the hydraulic cylinder two ( 3), the fixed point between the transmission rope two (9) and the frame is located below the fixed pulley four (15), and the other end of the transmission rope one (13) goes around the movable pulley three (4), fixed pulley Pulley three (14), movable pulley one (11) and fixed pulley one (1) are fixed on the workpiece (12), and the other end of the transmission rope two (9) walks around movable pulley four (6) and fixed pulley four successively. (15), movable pulley two (7) and fixed pulley two (8) are also fixed on the workpiece (12).

Images