CN214036342U

CN214036342U - Worm gear screw rod pressure boost stable form hydro-cylinder

Info

Publication number: CN214036342U
Application number: CN202023109563.4U
Authority: CN
Inventors: 岳会涛
Original assignee: Shijiazhuang Luancheng Xiangtai Technology Co ltd
Current assignee: Shijiazhuang Luancheng Xiangtai Technology Co ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-08-24
Anticipated expiration: 2030-12-22

Abstract

The utility model relates to a pneumatic cylinder technical field especially relates to a worm wheel screw rod pressure boost stable form hydro-cylinder. The oil-feeding type hydraulic lifting device comprises a base, wherein a driving shaft penetrates through a bearing and is connected to one side in the base, a driving groove is formed in the base on one side in the middle of the driving shaft, a gear is arranged in the driving groove, two sets of auxiliary oil ports are formed in one side of the driving groove and are used for driving the gear to rotate, a worm wheel is connected to a key below a main shaft, a worm is arranged in the middle of the driving shaft, a screw rod is arranged above the main shaft, threaded holes are formed in the lower portions of the middle portions of a piston and a hydraulic push rod, the gear is driven to rotate when the auxiliary oil ports are filled with oil, the worm wheel and the main shaft are driven to rotate together through the worm, and the piston and the hydraulic push rod are driven to lift when the main shaft rotates; meanwhile, the piston can be driven to lift through the main oil port, the piston is driven to move by double acting force, the lifting force of the hydraulic cylinder is high, the phenomenon of cylinder explosion cannot occur, and the piston cannot slide down due to pressure load in a static state.

Description

Worm gear screw rod pressure boost stable form hydro-cylinder

Technical Field

The utility model relates to a pneumatic cylinder technical field especially relates to a worm wheel screw rod pressure boost stable form hydro-cylinder.

Background

The pneumatic cylinder ubiquitous has after having used a period, the oil seepage release phenomenon appears, can slide down gradually when the hydro-cylinder receives long-time pressure, compares well crane landing leg hydro-cylinder, and when long-time work, the phenomenon is pressed in the leak that different degrees can appear to four hydro-cylinder landing legs, will make the platform slope to there is certain potential safety hazard.

In addition, the piston rod of the existing hydraulic oil cylinder is controlled to extend out only by driving the piston to lift through hydraulic oil, the internal pressure of the hydraulic cylinder body is high, and the cylinder explosion phenomenon is easy to occur when the hydraulic cylinder body operates under high load.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the technical deficiency exists is directed against, a worm gear screw rod pressure boost stable form hydro-cylinder is provided, including one side of the interior of the base is run through the bearing and is connected with the drive shaft, one side of the middle part of the drive shaft is provided with the driving groove in the interior of the base, the gear is arranged in the driving groove, one side of the driving groove is provided with two sets of auxiliary oil ports for driving the gear to rotate, the key is connected with the worm gear below the main shaft, the middle part of the drive shaft is provided with the worm, the screw rod is arranged above the main shaft, the threaded holes are arranged below the middle parts of the piston and the hydraulic push rod, when the auxiliary oil ports are filled with oil, the gear is driven to rotate, so that the worm gear and the main shaft are driven to rotate together through the worm, and the piston and the hydraulic push rod are driven to lift when the main shaft rotates; meanwhile, the piston can be driven to lift through the main oil port, the piston is driven to move by double acting force, the lifting force of the hydraulic cylinder is high, the phenomenon of cylinder explosion cannot occur, and the piston cannot slide down due to pressure load in a static state.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: comprises a hydraulic cylinder body, a hydraulic push rod and a self-locking hydraulic boosting device; a piston is arranged in the hydraulic cylinder body in a sliding and sealing manner; the bottom of the hydraulic push rod is fixedly arranged on the piston; two groups of main oil ports are arranged on one side of the hydraulic cylinder body and used for driving the piston to move up and down; the self-locking hydraulic boosting device is arranged below the hydraulic cylinder body; the self-locking hydraulic boosting device comprises a base, a gear and a worm wheel; the base is fixedly arranged at the bottom of the hydraulic cylinder body; the worm wheel and the gear are arranged inside the base.

Further optimizing the technical scheme, one side inside the base is connected with a driving shaft through a bearing; sealing covers are arranged on the base at two ends of the driving shaft; a driving groove is formed in the base on one side of the middle of the driving shaft; the gear is arranged in the driving groove; the gear is keyed to the drive shaft.

Further optimizing the technical scheme, one side of the driving groove is provided with two groups of auxiliary oil ports; and the auxiliary oil port is communicated with the driving groove and is used for driving the gear to rotate.

Further optimizing the technical scheme, a sealing seat is hermetically arranged below the middle part of the base; a main shaft is connected to the upper part of the middle part of the sealing seat through a bearing; a worm wheel is connected with the lower key of the main shaft; a worm is arranged in the middle of the driving shaft; the worm wheel and the worm are mutually matched for transmission.

Further optimizing the technical scheme, a screw is arranged above the main shaft; threaded holes are formed in the lower portions of the piston and the hydraulic push rod; the screw rod is in threaded connection inside the threaded hole.

Further optimize this technical scheme, the cross section of piston and hydraulic cylinder body be oval structure.

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

1. when the auxiliary oil port is filled with oil, the gear can be driven to rotate, the worm drives the worm wheel and the main shaft to rotate together, and when the main shaft rotates, the piston and the hydraulic push rod can be driven to lift.

2. Meanwhile, the piston can be driven to lift through the main oil port, the piston is driven to move by double acting force, the lifting force of the hydraulic cylinder is high, and the cylinder explosion phenomenon cannot occur.

3. The hydraulic push rod is driven to lift in an auxiliary mode through the worm gear and the worm and the threaded screw, the transmission mode has certain self-locking performance, and the piston cannot slide down due to pressure load in a static state.

4. The cross sections of the piston and the hydraulic cylinder body are of oval structures, so that the piston can be prevented from rotating in the hydraulic cylinder body.

Drawings

Fig. 1 is a front perspective structural view of a worm gear screw pressurization stable type oil cylinder.

Fig. 2 is a bottom three-dimensional structure diagram of a worm gear screw pressurization stable type oil cylinder.

FIG. 3 is a cross-sectional view of a piston and cylinder body of a worm-gear screw pressurization-stabilized cylinder.

FIG. 4 is a partial cross-sectional view of the internal structure of a base of a worm gear screw pressurization stable cylinder.

Fig. 5 is a partial sectional view of a hydraulic push rod part structure of a worm gear screw pressurization stable type oil cylinder.

In the figure: 1. a hydraulic cylinder block; 101. a main oil port; 2. a hydraulic push rod; 3. a self-locking hydraulic boosting device; 301. a base; 302. a gear; 303. a worm gear; 304. a drive shaft; 305. a sealing cover; 306. a drive slot; 307. an auxiliary oil port; 308. a sealing seat; 309. a main shaft; 310. a worm; 311. a screw; 4. a piston; 5. a threaded bore.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The first embodiment is as follows: as shown in the combined drawings 1-4, the worm gear screw rod supercharging stable oil cylinder is characterized in that: the device comprises a hydraulic cylinder body 1, a hydraulic push rod 2 and a self-locking hydraulic boosting device 3; a piston 4 is arranged in the hydraulic cylinder body 1 in a sliding and sealing manner; the bottom of the hydraulic push rod 2 is fixedly arranged on the piston 4; two groups of main oil ports 101 are formed in one side of the hydraulic cylinder body 1 and used for driving the piston 4 to move up and down; the self-locking hydraulic boosting device 3 is arranged below the hydraulic cylinder body 1; the self-locking hydraulic boosting device 3 comprises a base 301, a gear 302 and a worm gear 303; the base 301 is fixedly arranged at the bottom of the hydraulic cylinder body 1; the worm gear 303 and the gear 302 are disposed inside the base 301.

Preferably, a driving shaft 304 penetrates through one side of the inside of the base 301 and is connected with the bearing; two ends of the driving shaft 304 are provided with sealing covers 305 on the base 301; a driving groove 306 is formed in the base 301 on one side of the middle of the driving shaft 304; the gear 302 is disposed inside the drive slot 306; the gear 302 and drive shaft 304 are keyed.

Preferably, two sets of auxiliary oil ports 307 are arranged on one side of the driving groove 306; the secondary oil port 307 is communicated with the driving groove 306 and is used for driving the gear 302 to rotate.

Preferably, a sealing seat 308 is hermetically arranged below the middle part of the base 301; a main shaft 309 is connected to the upper part of the middle part of the sealing seat 308 through a bearing; a worm gear 303 is connected to a key below the main shaft 309; a worm 310 is arranged in the middle of the driving shaft 304; the worm wheel 303 and the worm 310 are in transmission fit with each other.

Preferably, a screw 311 is arranged above the main shaft 309; a threaded hole 5 is formed below the middle parts of the piston 4 and the hydraulic push rod 2; the screw 311 is screwed inside the threaded hole 5.

Preferably, the cross-section of the piston 4 and the hydraulic cylinder 1 is an elliptical structure.

The working principle, as shown in fig. 1-4, when the main oil port 101 below the hydraulic cylinder 1 supplies oil and the main oil port 101 above the hydraulic cylinder returns oil, the piston 4 slides upwards under the action of the hydraulic oil inside the hydraulic cylinder 1; meanwhile, the auxiliary oil port 307 on the lower side is used for oil feeding, the auxiliary oil port 307 on the upper side is used for oil returning, a driving groove 306 is formed in the base 301 on one side of the middle of the driving shaft 304, the gear 302 is arranged inside the driving groove 306, the gear 302 is connected with the driving shaft 304 in a key mode, two sets of auxiliary oil ports 307 are arranged on one side of the driving groove 306, the auxiliary oil ports 307 are communicated with the driving groove 306 and used for driving the gear 302 to rotate, and therefore the gear 302 rotates clockwise when the auxiliary oil port 307 on the lower side supplies oil, and the driving shaft 304 is driven to rotate together.

Because the sealing seat 308 is arranged below the middle part of the base 301 in a sealing manner, the main shaft 309 is connected to the upper part of the middle part of the sealing seat 308 in a bearing manner, the worm wheel 303 is connected to the lower part of the main shaft 309 in a key manner, the worm 310 is arranged in the middle part of the driving shaft 304, and the worm wheel 303 and the worm 310 are mutually matched for transmission, the driving shaft 304 can drive the worm 310 to rotate together when rotating, and therefore the worm wheel 303 and the main shaft 309 are driven to rotate together through the worm 310.

The main shaft 309 is provided with a screw 311 above, the piston 4 and the hydraulic push rod 2 are provided with a threaded hole 5 below the middle part, the screw 311 is in threaded connection with the inside of the threaded hole 5, and when the main shaft 309 rotates, the screw 311 above is driven to rotate together, so that the piston 4 and the hydraulic push rod 2 are driven to ascend together through the screw 311.

When the auxiliary oil port 307 is filled with oil, the gear 302 is driven to rotate, so that the worm 310 drives the worm wheel 303 and the main shaft 309 to rotate together, and when the main shaft 309 rotates, the piston 4 and the hydraulic push rod 2 are driven to lift; meanwhile, the piston 4 can be driven to lift through the main oil port 101, the piston 4 is driven to move by double acting force, the lifting force of the hydraulic cylinder is large, and the cylinder explosion phenomenon cannot occur.

The cross sections of the piston 4 and the hydraulic cylinder body 1 are of oval structures, so that the piston 4 can be prevented from rotating in the hydraulic cylinder body 1.

The worm gear 303 and the worm 310 and the threaded screw 311 are adopted to drive the hydraulic push rod 2 to ascend and descend in an auxiliary driving mode, the transmission mode has certain self-locking performance, and the piston 4 cannot slide down due to pressure load in a high-pressure static state.

In the same way, when the upper main oil port 101 and the auxiliary oil port 307 feed oil and the lower main oil port 101 and the auxiliary oil port 307 return oil, the hydraulic push rod 2 is recovered.

The utility model discloses a control mode comes automatic control through the controller, and the control circuit of controller can realize through the simple programming of technical staff in this field, belongs to the common general knowledge in this field, and the utility model discloses mainly be used for protecting mechanical device, so the utility model discloses no longer explain control mode and circuit connection in detail.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. The utility model provides a worm gear screw pressure boost stable form hydro-cylinder which characterized in that: comprises a hydraulic cylinder body (1), a hydraulic push rod (2) and a self-locking hydraulic boosting device (3); a piston (4) is arranged in the hydraulic cylinder body (1) in a sliding and sealing manner; the bottom of the hydraulic push rod (2) is fixedly arranged on the piston (4); two groups of main oil ports (101) are formed in one side of the hydraulic cylinder body (1) and are used for driving the piston (4) to move up and down; the self-locking hydraulic boosting device (3) is arranged below the hydraulic cylinder body (1); the self-locking hydraulic boosting device (3) comprises a base (301), a gear (302) and a worm wheel (303); the base (301) is fixedly arranged at the bottom of the hydraulic cylinder body (1); the worm wheel (303) and the gear (302) are arranged inside the base (301).

2. The worm gear and screw rod supercharging stable oil cylinder according to claim 1, characterized in that: a driving shaft (304) penetrates through one side in the base (301) and is connected with the bearing; two ends of the driving shaft (304) are provided with sealing covers (305) on the base (301); a driving groove (306) is formed in the base (301) on one side of the middle of the driving shaft (304); the gear (302) is arranged inside the driving groove (306); the gear (302) is keyed to a drive shaft (304).

3. The worm gear and screw rod supercharging stable oil cylinder according to claim 2, characterized in that: two sets of auxiliary oil ports (307) are arranged on one side of the driving groove (306); the auxiliary oil port (307) is communicated with the driving groove (306) and is used for driving the gear (302) to rotate.

4. The worm gear and screw rod supercharging stable oil cylinder according to claim 2, characterized in that: a sealing seat (308) is hermetically arranged below the middle part of the base (301); a main shaft (309) is connected with the upper part of the middle part of the sealing seat (308) through a bearing; a worm wheel (303) is connected with a key below the main shaft (309); a worm (310) is arranged in the middle of the driving shaft (304); the worm wheel (303) and the worm (310) are in transmission in a matched mode.

5. The worm gear screw pressure boost stable form hydro-cylinder of claim 4, characterized in that: a screw (311) is arranged above the main shaft (309); a threaded hole (5) is formed below the middle parts of the piston (4) and the hydraulic push rod (2); the screw (311) is in threaded connection with the inside of the threaded hole (5).

6. The worm gear and screw rod supercharging stable oil cylinder according to claim 1, characterized in that: the cross sections of the piston (4) and the hydraulic cylinder body (1) are of elliptical structures.