CN214036341U

CN214036341U - Screw rod boosting type hydraulic oil cylinder

Info

Publication number: CN214036341U
Application number: CN202023109530.XU
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 screw rod boosting formula hydraulic cylinder. The hydraulic cylinder is characterized in that a driving groove is formed in the lower portion of the inner portion of the base, a gear bearing is connected to the inner portion of the driving groove, two sets of auxiliary oil pipes are arranged on the base on two sides of the gear, a connecting pipe is arranged at one end of each auxiliary oil pipe, the auxiliary oil pipe on the left side is communicated with a main oil pipe through the connecting pipe, the auxiliary oil pipe on the right side is communicated with the main oil pipe through the connecting pipe, when oil returns from the main oil pipe above the oil inlet of the main oil pipe below, a piston rises, hydraulic oil passes through the driving groove simultaneously, so that the gear rotates, a screw rod is arranged above the gear, a threaded hole is formed in the inner portion below the hydraulic push rod, the screw rod is driven to rotate through the rotation of the gear, so that the hydraulic push rod is pushed to stretch out, a double-acting force driving hydraulic rod stretches out, the thrust force of the hydraulic cylinder is large, and the hydraulic pressure is small; the screw rod is matched with the piston to have a certain self-locking effect, so that the piston can be prevented from sinking due to leakage of hydraulic oil.

Description

Screw rod boosting type hydraulic oil cylinder

Technical Field

The utility model relates to a pneumatic cylinder technical field especially relates to a screw rod boosting formula hydraulic 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 defects exist are overcome, and the screw rod boosting type hydraulic oil cylinder is provided, which comprises a driving groove arranged below the inner part of a base, a gear bearing is connected inside the driving groove, two sets of auxiliary oil pipes are arranged on the base at two sides of a gear, one end of each auxiliary oil pipe is provided with a connecting pipe, the auxiliary oil pipe at the left side is communicated with a main oil pipe through the connecting pipe, the auxiliary oil pipe at the right side is communicated with the main oil pipe through the connecting pipe, when the main oil pipe above the oil inlet of the main oil pipe at the lower side returns oil, a piston rises, hydraulic oil passes through the driving groove at the same time, so that a driving gear rotates, a screw rod is arranged above the gear, a threaded hole is arranged inside the lower part of a hydraulic push rod, the screw rod is driven to rotate through the gear rotation, thereby the hydraulic push rod is pushed to extend, a hydraulic rod is driven to extend by double acting force, the thrust force of the hydraulic cylinder is larger, and the hydraulic pressure is small; the screw rod is matched with the piston to have a certain self-locking effect, so that the piston can be prevented from sinking due to leakage of hydraulic oil.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: comprises a hydraulic cylinder body, a piston and a self-locking boosting device; the upper end and the lower end of the hydraulic cylinder body are provided with fixed seats; one side of each fixed seat is provided with a main oil pipe for driving the piston to move up and down; a hydraulic push rod is arranged above the piston; the self-locking boosting device is arranged at the bottom of the lower fixed seat; the self-locking boosting device comprises a base and a gear; the base is fixedly arranged at the bottom of the lower fixed seat; the gear is arranged inside the base.

Further optimizing the technical scheme, a driving groove is arranged below the inner part of the base; the gear bearing is connected inside the driving groove; and a sealing end cover is arranged at the bottom of the driving groove.

The technical scheme is further optimized, two groups of auxiliary oil pipes are arranged on the base at two sides of the gear and are used for driving the gear to rotate; the auxiliary oil pipe is communicated with the driving groove.

Further optimizing the technical scheme, one end of the auxiliary oil pipe is provided with a connecting pipe; the auxiliary oil pipe on the left side is communicated with the main oil pipe through a connecting pipe; the auxiliary oil pipe on the right side is communicated with the main oil pipe through a connecting pipe.

Further optimizing the technical scheme, a screw is arranged above the gear; the screw rod and the bottom of the lower fixed seat are sealed; a threaded hole is formed in the lower inner part of the hydraulic push rod; the upper part of the threaded hole is closed; and the upper part of the screw rod is in threaded connection with the inside of the threaded hole.

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

1. when the lower main oil pipe takes oil and the upper main oil pipe returns oil, the piston rises, hydraulic oil passes through the driving groove simultaneously, so that the driving gear rotates, the screw rod is arranged above the gear, the threaded hole is formed in the inner part below the hydraulic push rod, the screw rod is driven to rotate through the rotation of the gear, and the hydraulic push rod is pushed to stretch out.

2. When the lower main oil pipe returns oil, and the upper main oil pipe enters oil, the piston descends, and when hydraulic oil flows through the driving groove, the gear rotates in the reverse direction, so that the screw rod is pushed to rotate in the reverse direction to drive the piston and the hydraulic push rod to retract.

3. The double acting force drives the hydraulic rod to extend, the thrust force of the hydraulic cylinder is large, the hydraulic pressure is small, and the hydraulic cylinder is stable in operation.

4. The screw rod is matched with the piston to have a certain self-locking effect, so that the piston can be prevented from sinking due to leakage of hydraulic oil.

Drawings

Fig. 1 is a schematic external structural view of a screw-assisted hydraulic cylinder.

FIG. 2 is a partial cross-sectional view of an internal mounting structure for a screw assisted hydraulic ram.

FIG. 3 is a partial sectional view of the internal structure of the gear mounting portion of a screw assisted hydraulic ram.

In the figure: 1. a hydraulic cylinder block; 2. a piston; 201. a hydraulic push rod; 202. a threaded hole; 3. a self-locking boosting device; 301. a base; 302. a gear; 303. a drive slot; 304. sealing the end cap; 305. an auxiliary oil pipe; 306. a connecting pipe; 307. a screw; 4. a fixed seat; 401. a main oil pipe.

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: referring to fig. 1-3, a screw boosting hydraulic cylinder is characterized in that: comprises a hydraulic cylinder body 1, a piston 2 and a self-locking boosting device 3; the upper end and the lower end of the hydraulic cylinder body 1 are both provided with a fixed seat 4; one side of the fixed seat 4 is provided with a main oil pipe 401 for driving the piston 2 to move up and down; a hydraulic push rod 201 is arranged above the piston 2; the self-locking boosting device 3 is arranged at the bottom of the lower fixed seat 4; the self-locking boosting device 3 comprises a base 301 and a gear 302; the base 301 is fixedly arranged at the bottom of the lower fixed seat 4; the gear 302 is disposed inside the base 301.

Preferably, a driving groove 303 is arranged below the inner part of the base 301; the gear 302 is in bearing connection with the inside of the driving groove 303; the bottom of the driving groove 303 is provided with a sealing end cover 304.

Preferably, two sets of auxiliary oil pipes 305 are arranged on the base 301 at two sides of the gear 302 and are used for driving the gear 302 to rotate; the sub oil pipe 305 communicates with the driving groove 303.

Preferably, one end of the auxiliary oil pipe 305 is provided with a connecting pipe 306; the left side auxiliary oil pipe 305 is communicated with the main oil pipe 401 through a connecting pipe 306; the right side sub oil pipe 305 and main oil pipe 401 are communicated through a connection pipe 306.

Preferably, a screw 307 is arranged above the gear 302; the screw 307 and the bottom of the lower fixed seat 4 are sealed; a threaded hole 202 is formed in the lower inner part of the hydraulic push rod 201; the upper part of the threaded hole 202 is closed; the screw 307 is screwed into the threaded hole 202.

The working principle, as shown in fig. 1-3, when oil enters the main oil pipe 401 below the hydraulic cylinder 1, hydraulic oil enters from below the hydraulic cylinder 1, so as to push the piston 2 and the hydraulic push rod 201 to rise, and the main oil pipe 401 above returns oil; since the connection pipe 306 is provided at one end of the sub oil pipe 305, the left sub oil pipe 305 and the main oil pipe 401 are connected through the connection pipe 306, and the right sub oil pipe 305 and the main oil pipe 401 are connected through the connection pipe 306, a part of the hydraulic oil introduced from the main oil pipe 401 enters the right sub oil pipe 305 through the connection pipe 306.

Base 301 inside below is provided with driving groove 303, gear 302 bearing connection is inside driving groove 303, driving groove 303 bottom is provided with end cover 304, gear 302 both sides are provided with two sets of vice oil pipe 305 on base 301 for drive gear 302 rotates, vice oil pipe 305 and driving groove 303 intercommunication, the vice oil pipe 305 on another part hydraulic oil follow the right side enters into driving groove 303 right side, then discharges from left vice oil pipe 305 through driving groove 303, enters into the main oil pipe 401 of top through connecting pipe 306 at last and carries out the oil return.

When hydraulic oil passes through the driving groove 303, the gear 302 is pushed to rotate anticlockwise, because the screw 307 is arranged above the gear 302, the screw 307 is sealed with the bottom of the lower fixed seat 4, the threaded hole 202 is arranged inside the lower portion of the hydraulic push rod 201, the upper portion of the threaded hole 202 is sealed, and the upper portion of the screw 307 is in threaded connection with the inside of the threaded hole 202, the screw 307 is driven to rotate anticlockwise together when the gear 302 rotates anticlockwise, so that the piston 2 and the hydraulic push rod 201 are pushed to move upwards under the action of the screw 307.

The double acting force drives the hydraulic push rod 201 to extend out, the thrust force of the hydraulic cylinder is high, the hydraulic pressure is low, the screw 307 is adopted to assist in driving the hydraulic push rod 201 to extend out, and the hydraulic cylinder is stable in operation; the screw 307 has a certain self-locking effect in cooperation, and when oil supply is stopped, the piston 2 can be prevented from sinking due to leakage of hydraulic oil.

Similarly, when the upper main oil pipe 401 supplies oil, hydraulic oil pushes the piston 2 to move downwards, the lower main oil pipe 401 returns oil, and simultaneously hydraulic oil flows in the driving groove 303 in the reverse direction, so that the gear 302 is pushed to rotate in the reverse direction, and the gear 302 rotates in the reverse direction to drive the piston 2 and the hydraulic push rod 201 to retract through the screw 307.

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 screw rod boosting formula hydraulic cylinder which characterized in that: comprises a hydraulic cylinder body (1), a piston (2) and a self-locking boosting device (3); the upper end and the lower end of the hydraulic cylinder body (1) are provided with fixed seats (4); one side of each fixed seat (4) is provided with a main oil pipe (401) for driving the piston (2) to move up and down; a hydraulic push rod (201) is arranged above the piston (2); the self-locking boosting device (3) is arranged at the bottom of the lower fixed seat (4); the self-locking boosting device (3) comprises a base (301) and a gear (302); the base (301) is fixedly arranged at the bottom of the lower fixed seat (4); the gear (302) is arranged inside the base (301).

2. The screw-assisted hydraulic ram of claim 1, wherein: a driving groove (303) is arranged below the inner part of the base (301); the gear (302) is in bearing connection with the inside of the driving groove (303); and a sealing end cover (304) is arranged at the bottom of the driving groove (303).

3. The screw-assisted hydraulic ram of claim 2, wherein: two groups of auxiliary oil pipes (305) are arranged on the base (301) at two sides of the gear (302) and are used for driving the gear (302) to rotate; the auxiliary oil pipe (305) is communicated with the driving groove (303).

4. The screw-assisted hydraulic ram of claim 3, wherein: one end of the auxiliary oil pipe (305) is provided with a connecting pipe (306); the left auxiliary oil pipe (305) is communicated with the main oil pipe (401) through a connecting pipe (306); the right auxiliary oil pipe (305) and the main oil pipe (401) are communicated through a connecting pipe (306).

5. The screw-assisted hydraulic ram of claim 1, wherein: a screw (307) is arranged above the gear (302); the screw (307) and the bottom of the lower fixed seat (4) are sealed; a threaded hole (202) is formed in the lower inner part of the hydraulic push rod (201); the threaded hole (202) is closed above; the upper part of the screw rod (307) is in threaded connection with the inside of the threaded hole (202).