CN212297115U - Lever cylinder with built-in lever - Google Patents
Lever cylinder with built-in lever Download PDFInfo
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- CN212297115U CN212297115U CN202021038209.4U CN202021038209U CN212297115U CN 212297115 U CN212297115 U CN 212297115U CN 202021038209 U CN202021038209 U CN 202021038209U CN 212297115 U CN212297115 U CN 212297115U
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Abstract
The utility model discloses a built-in lever jar of lever, including cylinder body and piston rod assembly, the cylinder body includes cylinder, rear end cap, sets firmly the front end housing in cylinder cavity inner chamber to and set firmly in the outer end cover of cylinder front end, piston rod assembly includes piston and piston rod, and the piston is located in the cavity inner chamber with sliding, constitutes a holding chamber between outer end cover and the front end housing, the lever jar is still including locating depression bar and the supporting rod in the holding chamber, the one end of depression bar is connected with rotating on the front end of piston rod, the supporting rod is connected with rotating the front end housing with between the depression bar, seted up on the cylinder with the through-hole of holding chamber intercommunication, the other end of depression bar can certainly the through-hole is worn out to outside the cylinder. The lever cylinder is simple and compact in overall structure and suitable for occasions with requirements on space.
Description
Technical Field
The utility model relates to a built-in lever jar of lever.
Background
The lever structure is a structure well known to technicians in the field of machinery, is divided into an active arm, a resistance arm and a fulcrum, and has the advantages of simple structure, reasonable arrangement and force increasing effect. Therefore, the traditional lever cylinder is designed according to the principle, as shown in the attached drawings 1 and 2, the lever cylinder has the characteristics of simple structure and few defects of a mechanical model, and is greatly used in the tool clamp industry. The output force model of the lever cylinder is as follows: power (F)1) Power arm (L)1) = resistance (F)2) Resistance arm (L)2) The traditional lever cylinder structure provides power for the piston rod, the supporting point is arranged on the cylinder body or outside the cylinder body, and the pressing plate is a lever. However, under certain power conditions, in order to obtain larger output force, the power arm is increased, so that the size of the cylinder body is increased, or the occupied size of the lever module is increased, and the size and the weight of the whole tool clamp are increased undoubtedly.
Disclosure of Invention
The utility model aims at overcoming the defects of the prior art and providing a lever cylinder with a built-in lever.
In order to achieve the above purpose, the utility model adopts the technical scheme that: the lever cylinder with the built-in lever comprises a cylinder body and a piston rod assembly, and is characterized in that: the cylinder body comprises a cylinder barrel with a hollow inner cavity, a rear end cover fixedly arranged at the rear end of the cylinder barrel, a front end cover fixedly arranged in the hollow inner cavity of the cylinder barrel and an outer end cover fixedly arranged at the front end of the cylinder barrel, the piston rod assembly comprises a piston and a piston rod, the piston is slidably arranged in the hollow inner cavity and is in sealing fit with the hollow inner cavity, a through hole is arranged on the front end cover, the piston rod is axially and slidably arranged in the through hole in a penetrating manner and is in sealing fit with the through hole, an accommodating cavity is formed between the outer end cover and the front end cover, the lever cylinder further comprises a pressure rod and a support connecting rod which are arranged in the accommodating cavity, one end of the pressure rod is rotatably connected to the front end of the piston rod, the support connecting rod is rotatably connected between the front end cover and the pressure rod, and a through hole communicated with the accommodating cavity is arranged on the cylinder, the other end of the pressing rod can penetrate out of the cylinder barrel through the through hole.
Preferably, the axis of the piston rod is offset from the axis of the piston.
Furthermore, the end part of the supporting connecting rod is rotationally connected to the front end cover through a rotating shaft, and the axial lead of the piston rod and the rotating shaft are respectively arranged on two different sides of the axial lead of the piston.
Preferably, the front end cap is position-adjustably disposed in the hollow inner cavity in a front-rear direction.
Further, the front end cover is detachably connected with the cylinder barrel through a positioning pin, and the periphery of the outer side of the front end cover is hermetically connected with the cylinder barrel.
Preferably, a rod cavity is formed between the piston and the front end cover, a rodless cavity is formed between the piston and the rear end cover, a first gas/liquid channel communicated with the rod cavity is formed in the front end cover, and a second gas/liquid channel communicated with the rodless cavity is formed in the rear end cover.
Furthermore, the cylinder barrel is also provided with an interface which is butted with the first air/liquid channel.
Preferably, the compression rod is provided with a connecting end and a pressing end, the connecting end is connected with the piston rod, and the pressing end can penetrate out of the through hole when the compression rod swings.
Furthermore, the pressing end is provided with a pressing surface used for being in contact with the piece to be pressed, and the pressing surface is arc-shaped.
Preferably, the lever cylinder is a pneumatic cylinder.
Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage: the lever cylinder with the built-in lever of the utility model arranges the rotating fulcrum in the cylinder body, arranges the lever part in the cylinder body and leads the compressing end to extend out of the cylinder body only when compressing tightly; meanwhile, the center line of the piston rod and the position of the hinged support are reasonably arranged, the support connecting rods with different lengths can be selected according to different working conditions, and the size of the alpha angle is adjusted, so that the length of the power arm can be changed to obtain different output forces. The distance between the cylinder body and the part to be pressed is shortened, the whole structure is simple and compact, and the device is suitable for occasions with requirements on space.
Drawings
Fig. 1 and 2 are schematic diagrams illustrating the structure and working principle of a conventional lever cylinder in the prior art;
fig. 3 is a schematic structural view of the lever cylinder of the present invention, wherein the pressing rod is in a released state;
fig. 4 is a schematic structural diagram of the lever cylinder of the present invention, wherein the pressing rod is in a pressing state;
wherein: 1. a cylinder body; 11. a cylinder barrel; 12. a rear end cap; 121. a second gas/liquid channel; 13. a front end cover; 131. a first gas/liquid channel; 14. an outer end cover; 15. an interface; 16. a through hole; 2. a piston rod assembly; 21. a piston; 22. a piston rod; 3. a pressure lever; 31. a compression surface; 4. a support link; 5. a rotating shaft; 6. a diverter valve; 7. a member to be compressed; 8. and a positioning pin.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.
Referring to fig. 3 and 4, the lever built-in lever cylinder shown in fig. 4 comprises a cylinder body 1 and a piston rod assembly 2, wherein the cylinder body 1 comprises a cylinder barrel 11 with a hollow inner cavity, a rear end cover 12 fixedly arranged at the rear end of the cylinder barrel 11, a front end cover 13 fixedly arranged in the hollow inner cavity of the cylinder barrel 11, and an outer end cover 14 fixedly arranged at the front end of the cylinder barrel 11.
The piston rod assembly 2 comprises a piston 21 and a piston rod 22, the piston 21 is arranged in the hollow inner cavity in a sliding fit manner and is in sealing fit with the hollow inner cavity, a through hole is formed in the front end cover 13, and the piston rod 22 penetrates through the through hole in an axial sliding fit manner and is in sealing fit with the through hole.
An accommodating cavity is formed between the outer end cover 14 and the front end cover 13, the lever cylinder further comprises a pressing rod 3 and a supporting connecting rod 4 which are arranged in the accommodating cavity, one end of the pressing rod 3 is rotatably connected to the front end of the piston rod 22, the supporting connecting rod 4 is rotatably connected between the front end cover 13 and the pressing rod 3, a through hole 16 communicated with the accommodating cavity is formed in the cylinder barrel 11, and the other end of the pressing rod 3 can penetrate out of the cylinder barrel 11 from the through hole 16.
The pressure lever 3 has a connecting end and a pressing end, the connecting end is rotatably connected with the front end of the piston rod 22, and the pressing end can penetrate out of the through hole 16 when the pressure lever 3 swings to act on the to-be-pressed part 7. Here, the pressing end has a pressing surface 31 for contacting the part to be pressed 7, the pressing surface 31 being an arc surface.
In the present embodiment, referring to fig. 3 and 4, the axis of the piston rod 22 is offset from the axis of the piston 21, specifically, the end of the support link 4 is rotatably connected to the front end cap 13 via the rotating shaft 5, and the axis of the piston rod 22 and the rotating shaft 5 are respectively disposed on two opposite sides of the axis of the piston 21. This allows the power arm L1 to be enlarged.
Referring to fig. 3 and 4, the front end cap 13 is detachably mounted in the hollow cavity of the cylinder 11, so that the front-back position of the front end cap 13 in the hollow cavity can be adjusted according to the stroke of the piston rod assembly 2. Specifically, the front end cover 13 is detachably connected with the cylinder 11 through the positioning pins 8 which are uniformly distributed in the circumferential direction, and the outer circumferential part of the front end cover 13 is hermetically connected with the cylinder 11.
A rod cavity is formed between the piston 21 and the front end cover 13, a rodless cavity is formed between the piston 21 and the rear end cover 12, a first gas/liquid channel 131 communicated with the rod cavity is formed in the front end cover 13, and a second gas/liquid channel 121 communicated with the rodless cavity is formed in the rear end cover 12. The inlet and outlet of the reversing valve 6 are respectively communicated with the first gas/liquid channel 131 and the second gas/liquid channel 121, so that gas/liquid can be fed into and discharged from the rod cavity and the rodless cavity. The cylinder 11 is also provided with a port 15 communicated with the first gas/liquid channel 131 for butt joint with a pipeline led out from the reversing valve 6. The lever cylinder in this embodiment is a pneumatic cylinder.
To sum up, the lever built-in lever cylinder of the utility model arranges the rotating fulcrum in the cylinder body 1, the lever part is also arranged in the cylinder body 1, and the compressing end extends out of the cylinder body 1 only when compressing; meanwhile, the central line of the piston rod 21 and the position L of the hinged support are reasonably arranged, the support connecting rods 4 with different lengths can be selected according to different working conditions, and the size of the angle alpha is adjusted, so that the length of the power arm L1 can be changed, and different output forces can be obtained. The structure shortens the distance between the cylinder body 1 and the part to be pressed 7, has simple and compact integral structure, and is suitable for occasions with requirements on space.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (10)
1. The lever cylinder with the built-in lever comprises a cylinder body and a piston rod assembly, and is characterized in that: the cylinder body comprises a cylinder barrel with a hollow inner cavity, a rear end cover fixedly arranged at the rear end of the cylinder barrel, a front end cover fixedly arranged in the hollow inner cavity of the cylinder barrel and an outer end cover fixedly arranged at the front end of the cylinder barrel, the piston rod assembly comprises a piston and a piston rod, the piston is slidably arranged in the hollow inner cavity and is in sealing fit with the hollow inner cavity, a through hole is arranged on the front end cover, the piston rod is axially and slidably arranged in the through hole in a penetrating manner and is in sealing fit with the through hole, an accommodating cavity is formed between the outer end cover and the front end cover, the lever cylinder further comprises a pressure rod and a support connecting rod which are arranged in the accommodating cavity, one end of the pressure rod is rotatably connected to the front end of the piston rod, the support connecting rod is rotatably connected between the front end cover and the pressure rod, and a through hole communicated with the accommodating cavity is arranged on the cylinder, the other end of the pressing rod can penetrate out of the cylinder barrel through the through hole.
2. The lever built-in lever cylinder according to claim 1, characterized in that: the axial lead of the piston rod deviates from the axial lead of the piston.
3. The lever built-in lever cylinder according to claim 2, characterized in that: the end part of the supporting connecting rod is rotationally connected to the front end cover through a rotating shaft, and the axial lead of the piston rod and the rotating shaft are respectively arranged on two different sides of the axial lead of the piston.
4. The lever built-in lever cylinder according to claim 1, characterized in that: the front end cover is arranged in the hollow inner cavity in a position adjustable mode along the front-back direction.
5. The lever built-in lever cylinder according to claim 4, wherein: the front end cover is detachably connected with the cylinder barrel through a positioning pin, and the periphery of the outer side of the front end cover is connected with the cylinder barrel in a sealing mode.
6. The lever built-in lever cylinder according to claim 1, characterized in that: a rod cavity is formed between the piston and the front end cover, a rodless cavity is formed between the piston and the rear end cover, a first gas/liquid channel communicated with the rod cavity is formed in the front end cover, and a second gas/liquid channel communicated with the rodless cavity is formed in the rear end cover.
7. The lever built-in lever cylinder according to claim 6, wherein: and the cylinder barrel is also provided with an interface which is butted with the first gas/liquid channel.
8. The lever built-in lever cylinder according to claim 1, characterized in that: the compression bar is provided with a connecting end and a compressing end, the connecting end is connected with the piston rod, and the compressing end can penetrate out of the through hole when the compression bar swings.
9. The lever built-in lever cylinder according to claim 8, wherein: the pressing end is provided with a pressing surface used for contacting with a piece to be pressed, and the pressing surface is arc-shaped.
10. The lever built-in lever cylinder according to any one of claims 1 to 9, characterized in that: the lever cylinder is a pneumatic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021038209.4U CN212297115U (en) | 2020-06-08 | 2020-06-08 | Lever cylinder with built-in lever |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021038209.4U CN212297115U (en) | 2020-06-08 | 2020-06-08 | Lever cylinder with built-in lever |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212297115U true CN212297115U (en) | 2021-01-05 |
Family
ID=73939360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021038209.4U Active CN212297115U (en) | 2020-06-08 | 2020-06-08 | Lever cylinder with built-in lever |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212297115U (en) |
-
2020
- 2020-06-08 CN CN202021038209.4U patent/CN212297115U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211022 Address after: 215000 No. 95, Caohu Avenue, Caohu street, Xiangcheng District, Suzhou City, Jiangsu Province Patentee after: SUZHOU XINDELI DYNAMO-ELECTRIC TECHNOLOGY Co.,Ltd. Address before: 215000 No.95 Caohu Avenue, Caohu street, Xiangcheng economic and Technological Development Zone, Suzhou City, Jiangsu Province Patentee before: SUZHOU ROARING PRECISION MACHINERY Co.,Ltd. |
|
| TR01 | Transfer of patent right |