CN216199771U

CN216199771U - Connecting rod device with adjustable transmission ratio

Info

Publication number: CN216199771U
Application number: CN202122431785.6U
Authority: CN
Inventors: 张文杰
Original assignee: Huai'an Jerry Machinery Manufacturing Co ltd
Current assignee: Huai'an Jerry Machinery Manufacturing Co ltd
Priority date: 2021-10-10
Filing date: 2021-10-10
Publication date: 2022-04-05
Anticipated expiration: 2031-10-10

Abstract

The utility model discloses a connecting rod device with adjustable transmission ratio, which comprises a body, a crank arranged on the inner side surface of the body, a sliding block arranged on the inner side surface of the body and a piston rod arranged outside the sliding block, wherein the outer surface of the crank is provided with a movable groove; rotate through motor drive gear, make the gear can carry out the horizontal direction removal under the meshing effect of rack, thereby the slider removes and drives first connecting rod and removes, make the combined length of first connecting rod and second connecting rod change, can adjust crank link mechanism's drive ratio, make the crank normally rotate the removal stroke distance of round piston rod and change, make compression efficiency change, need realize through adjusting power output when having avoided the compressor to need to adjust refrigeration speed and lead to spending the condition emergence of more electric power resources, the practicality of compressor in the use has greatly been improved.

Description

Connecting rod device with adjustable transmission ratio

Technical Field

The utility model relates to the technical field of compressors, in particular to a connecting rod device with an adjustable transmission ratio.

Background

The compressor is a driven fluid machine that raises low-pressure gas to high-pressure gas, and is the heart of a refrigeration system. The refrigerating cycle is powered by sucking low-temperature and low-pressure refrigerant gas from the air suction pipe, driving the piston to compress the refrigerant gas through the operation of the motor, and discharging high-temperature and high-pressure refrigerant gas to the exhaust pipe. The compressor is various in kind, and a piston compressor is also one of them.

When the piston compressor works, power is converted through the crank-connecting rod mechanism, and rotating force is converted into horizontal movement force of the piston, but a connecting rod and a crank on the commonly used piston compressor are fixedly connected, and the position is not adjustable, so that the transmission ratio of the crank-connecting rod mechanism cannot be adjusted, the rotating speed of a power output motor can only be adjusted when the compression speed of the compressor needs to be adjusted, however, along with the adjustment of the rotating speed of the motor, the higher the energy consumption of the motor is, and the faster the compression speed of the compressor is, the more energy is consumed by the work of the compressor.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the refrigeration speed can only be adjusted by adjusting power input when the transmission ratio of the connecting rod of the crank connecting rod mechanism of the compressor is fixed, and achieve the purpose of adjusting the transmission ratio of the connecting rod of the crank connecting rod mechanism of the compressor, the utility model is realized by the following technical scheme: a connecting rod device with adjustable transmission ratio comprises a body, a crank arranged on the inner side surface of the body, a sliding block arranged on the inner side surface of the body and a piston rod arranged outside the sliding block, wherein a movable groove is formed in the outer surface of the crank, a movable block is connected to the inner side surface of the movable groove in a sliding manner, a motor is arranged on the outer surface of the movable block, a gear is arranged outside the motor, the outer surface of the gear is meshed with a rack, a first connecting rod is rotatably connected to the outer surface of the movable block, a second connecting rod is arranged on the outer surface of the first connecting rod, a fixed groove is formed in the inner side surface of the second connecting rod, a fixed rod is arranged on the inner side surface of the first connecting rod, a spring is arranged on the outer surface of the fixed rod, a pull rope is arranged outside the fixed rod, a pull rod is arranged on the inner side surface of the first connecting rod, and an electromagnet is arranged on the inner side surface of the first connecting rod, the inner side surface of the first connecting rod is provided with a guide rod.

Furthermore, the rack is fixedly connected with the inner side face of the crank, the first connecting rod is connected with the inner side face of the second connecting rod in a sliding mode, so that the first connecting rod and the second connecting rod can move relative to each other, and the second connecting rod is connected with the outer surface of the sliding block in a rotating mode.

Further, the dead lever is connected with the medial surface sliding of second connecting rod, the medial surface fixed connection of spring and second connecting rod, the quantity of fixed slot is four at least, all the fixed slot equidistance distributes at the medial surface of second connecting rod, the specification and the dead lever phase-match of fixed slot for the dead lever can be pegged graft with the fixed slot, thereby stabilizes fixedly to first connecting rod and second connecting rod.

Furthermore, the pull rope is fixedly connected with the pull rod, and the pull rope is connected with the outer surface of the guide rod in a sliding mode, so that the guide rod can adjust the pulling force direction of the pull rope.

Furthermore, the pull rod is connected with the inner side face of the second connecting rod in a sliding mode, the pull rod is made of metal iron materials, and the position and the specification of the electromagnet are matched with those of the pull rod, so that the electromagnet can attract the pull rod mutually after being electrified and drive the pull rod to move.

The utility model provides a link device with an adjustable transmission ratio. The method has the following beneficial effects:

1. according to the connecting rod device with the adjustable transmission ratio, the gear can move in the horizontal direction under the meshing action of the racks by driving the gear to rotate through the motor, so that the sliding block moves and drives the first connecting rod to move, the combined length of the first connecting rod and the second connecting rod is changed, the transmission ratio of the crank-connecting rod mechanism can be adjusted, the moving stroke distance of the piston rod of a circle of normal rotation of the crank is changed, the compression efficiency is changed, the condition that more electric power resources are required to be consumed due to the fact that the compressor needs to adjust power output when the refrigeration speed needs to be adjusted is avoided, and the practicability of the compressor in the use process is greatly improved;

2. this link means with adjustable drive ratio, through the dead lever, mutually support between fixed slot and the spring, can stabilize first connecting rod and second connecting rod and fix, make first connecting rod and second connecting rod stability in the course of the work better, simultaneously, through the electro-magnet, mutually support between pull rod and the stay cord, can send out when the position is adjusted between first connecting rod and second connecting rod and fix both, thereby can guarantee the normal clear of first connecting rod position control work, the inconvenient or relatively poor condition of stability takes place in the course of the work of first connecting rod position control has been avoided.

Drawings

FIG. 1 is a partial sectional structural schematic view of the present invention.

FIG. 2 is an enlarged view of the structure at A in FIG. 1 according to the present invention.

FIG. 3 is a schematic view of a connection structure of a portion of the structure shown in FIG. 1.

FIG. 4 is an enlarged view of the structure at B in FIG. 3 according to the present invention.

In the figure: 1. a body; 2. a crank; 3. a slider; 4. a piston rod; 5. a movable groove; 6. a movable block; 7. a motor; 8. a gear; 9. a rack; 10. a first link; 11. a second link; 12. fixing grooves; 13. fixing the rod; 14. a spring; 15. pulling a rope; 16. a pull rod; 17. an electromagnet; 18. a guide rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

An embodiment of the linkage arrangement with adjustable transmission ratio is as follows:

referring to fig. 1-4, a link device with adjustable transmission ratio comprises a body 1, a crank 2 disposed on an inner side of the body 1, a slider 3 disposed on an inner side of the body 1, and a piston rod 4 disposed outside the slider 3, wherein a movable slot 5 is disposed on an outer surface of the crank 2, a movable block 6 is slidably connected to an inner side of the movable slot 5, a motor 7 is disposed on an outer surface of the movable block 6, a gear 8 is disposed on an outer portion of the motor 7, an outer surface of the gear 8 is engaged with a rack 9, a first link 10 is rotatably connected to an outer surface of the movable block 6, a second link 11 is disposed on an outer surface of the first link 10, the rack 9 is fixedly connected to an inner side of the crank 2, and the first link 10 is slidably connected to an inner side of the second link 11, so that the relative position between the first connecting rod 10 and the second connecting rod 11 can be moved, and the second connecting rod 11 is rotatably connected with the outer surface of the sliding block 3.

Fixed slot 12 has been seted up to the medial surface of second connecting rod 11, the medial surface of first connecting rod 10 sets up dead lever 13, the medial surface sliding connection of dead lever 13 and second connecting rod 11, spring 14 and the medial surface fixed connection of second connecting rod 11, the quantity of fixed slot 12 is four at least, all fixed slot 12 equidistance distribute at the medial surface of second connecting rod 11, the specification and the dead lever 13 phase-match of fixed slot 12, make dead lever 13 peg graft with fixed slot 12, thereby stabilize fixedly to first connecting rod 10 and second connecting rod 11.

The surface of dead lever 13 is provided with spring 14, the outside of dead lever 13 is provided with stay cord 15, the medial surface of first connecting rod 10 is provided with pull rod 16, the medial surface of first connecting rod 10 is provided with electro-magnet 17, the medial surface sliding connection of pull rod 16 and second connecting rod 11, pull rod 16 is made by metal iron material, the position of electro-magnet 17, the specification all with pull rod 16 phase-match, make electro-magnet 17 can attract each other and drive pull rod 16 with pull rod 16 and remove after circular telegram, the medial surface of first connecting rod 10 is provided with guide bar 18, stay cord 15 and pull rod 16 fixed connection, the surface sliding connection of stay cord 15 and guide bar 18, make guide bar 18 can adjust the pulling force direction of stay cord 15.

In the using process, when the refrigerating speed of the compressor needs to be adjusted, the electromagnet 17 is electrified, the electromagnet 17 generates magnetism, the electromagnet and the pull rod 16 attract each other and drive the pull rod 16 to move, the pull rod 16 pulls the pull rope 15 in the moving process, under the guiding action of the guide rod 18, the pull rope 15 drives the fixed rod 13 to move and withdraw from the inside of the fixed groove 12 after being pulled, so that the fixed rod 13 does not fix the first connecting rod 10 and the second connecting rod 11 any more, then the motor 7 rotates to drive the gear 8 to rotate, under the meshing transmission action of the rack 9, the gear 8 rotates to drive the movable block 6 to move, the movable block 6 moves to drive the first connecting rod 10 to move, so that the first connecting rod 10 and the second connecting rod 11 move relatively, the combined length between the first connecting rod 10 and the second connecting rod 11 changes, and the crank 2 rotates for one circle under the condition of normal rotating speed, the transmission distance of the combination of the first connecting rod 10 and the second connecting rod 11 is changed, so that the adjustment of the refrigeration speed of the compressor is realized without adjusting the power output speed of a power source;

at normal during operation, under the effect of spring 14 extrusion force, dead lever 13 is pegged graft at the medial surface of fixed slot 12 by the extrusion to can stabilize fixedly to first connecting rod 10 and second connecting rod 11, make first connecting rod 10 and second connecting rod 11 stability in the course of the work better, can not hinder normal transmission work production.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a link means with adjustable drive ratio, includes body (1), sets up crank (2) at body (1) medial surface, sets up slider (3) and the piston rod (4) of setting outside at slider (3) at body (1) medial surface, its characterized in that: the outer surface of the crank (2) is provided with a movable groove (5), the inner side surface of the movable groove (5) is slidably connected with a movable block (6), the outer surface of the movable block (6) is provided with a motor (7), the outside of the motor (7) is provided with a gear (8), the outer surface of the gear (8) is meshed with a rack (9), the outer surface of the movable block (6) is rotatably connected with a first connecting rod (10), the outer surface of the first connecting rod (10) is provided with a second connecting rod (11), the inner side surface of the second connecting rod (11) is provided with a fixed groove (12), the inner side surface of the first connecting rod (10) is provided with a fixed rod (13), the outer surface of the fixed rod (13) is provided with a spring (14), the outside of the fixed rod (13) is provided with a pull rope (15), the inner side surface of the first connecting rod (10) is provided with a pull rod (16), an electromagnet (17) is arranged on the inner side face of the first connecting rod (10), and a guide rod (18) is arranged on the inner side face of the first connecting rod (10).

2. A linkage arrangement having an adjustable transmission ratio according to claim 1, wherein: the rack (9) is fixedly connected with the inner side face of the crank (2), the first connecting rod (10) is connected with the inner side face of the second connecting rod (11) in a sliding mode, and the second connecting rod (11) is connected with the outer surface of the sliding block (3) in a rotating mode.

3. A linkage arrangement having an adjustable transmission ratio according to claim 1, wherein: the utility model discloses a fixing device for the automobile seat, including dead lever (13) and second connecting rod (11), the medial surface sliding connection of dead lever (13) and second connecting rod (11), the medial surface fixed connection of spring (14) and second connecting rod (11), the quantity of fixed slot (12) is four at least, all fixed slot (12) equidistance distributes at the medial surface of second connecting rod (11), the specification and the dead lever (13) phase-match of fixed slot (12).

4. A linkage arrangement having an adjustable transmission ratio according to claim 1, wherein: the pull rope (15) is fixedly connected with the pull rod (16), and the pull rope (15) is connected with the outer surface of the guide rod (18) in a sliding mode.

5. A linkage arrangement having an adjustable transmission ratio according to claim 1, wherein: the inner side surfaces of the pull rod (16) and the second connecting rod (11) are in sliding connection, the pull rod (16) is made of a metal iron material, and the position and the specification of the electromagnet (17) are matched with those of the pull rod (16).