CN216429601U

CN216429601U - Rock stratum crushing hydraulic device

Info

Publication number: CN216429601U
Application number: CN202122640929.9U
Authority: CN
Inventors: 虞尚均; 叶宇昂; 邓正刚; 叶帮正; 余兴江
Original assignee: Luzhou City Longmatan District Changjiang Hydraulic Parts Co ltd
Current assignee: Luzhou City Longmatan District Changjiang Hydraulic Parts Co ltd
Priority date: 2021-11-01
Filing date: 2021-11-01
Publication date: 2022-05-03
Anticipated expiration: 2031-11-01

Abstract

The utility model discloses a rock stratum crushing hydraulic device, which comprises two arc-shaped shells and a hydraulic cylinder arranged between the two arc-shaped shells, wherein the hydraulic cylinder comprises a cylinder barrel and a cavity stretching oil way arranged in the cylinder barrel, a plurality of parallel piston cavities are arranged in the cylinder barrel, the inner ends of the piston cavities are connected with the cavity stretching oil way, the outer ends of the piston cavities are internally connected with guide sleeves, the piston cavities are internally provided with connected piston rods and pistons in a sliding way, the pistons are respectively positioned at the inner ends of the respective piston cavities, the piston rods respectively pass through the respective guide sleeves in a sliding way, and reset springs are respectively sleeved outside the piston rods between the guide sleeves and the corresponding pistons; the outer circumferences of the two arc-shaped shells are respectively provided with more than two radial grooves, and more than two annular spring rings are arranged in the radial grooves of the two arc-shaped shells. The utility model has the advantages of high impact frequency and long stroke, and can improve the crushing effect.

Description

Rock stratum crushing hydraulic device

Technical Field

The utility model relates to a broken hydraulic means of rock stratum especially is used for the broken hydraulic means of rock stratum of non-excavation push pipe engineering.

Background

At present, when a municipal non-excavation pipe jacking project is excavated by manpower and is not excavated by a pipe jacking machine, a encountered rock layer needs to be excavated, and the existing crushing hydraulic device comprises two arc shells and a hydraulic cylinder arranged between the two arc shells, wherein a plurality of piston rods in the hydraulic cylinder are controlled to extend out or retract through two oil ports on the hydraulic cylinder, the piston rods and the rear end of the cylinder barrel alternately impact the two arc shells, and the two arc shells impact the rock again, so that the aims of shattering and crushing are fulfilled; however, the structure controls the piston rod to retract through the oil port, the response speed is low, the impact frequency is low, the two arc-shaped shells cannot return after being impacted, the next impact stroke is short, and the crushing effect is affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned not enough that prior art exists, provide a broken hydraulic means of rock stratum, it has the advantage that striking frequency is high, the stroke is long, can improve crushing effect.

In order to achieve the purpose, the utility model discloses a rock stratum crushing hydraulic device, including two arc casings, the pneumatic cylinder of arranging between two arc casings, the pneumatic cylinder includes the cylinder, locate stretching the chamber oil circuit in the cylinder, its characterized in that is equipped with several parallel piston chambers in the cylinder, the inner of piston chamber all links with stretching the chamber oil circuit, the outer end of piston chamber all links with the uide bushing in, the piston intracavity is all gliding to be equipped with associative piston rod and piston, the piston all is located the inner of respective piston chamber, the piston rod all glidingly passes respective uide bushing, all overlap the reset spring outside the piston rod between uide bushing and corresponding piston; the outer circumferences of the two arc-shaped shells are respectively provided with more than two radial grooves, and more than two annular spring rings are arranged in the radial grooves of the two arc-shaped shells.

When the device is used, the device is arranged in a pre-drilled hole of a rock stratum, the extending cavity oil way controls each piston rod to extend out, and the piston rods automatically retract by virtue of the return spring, so that the response speed is high, the impact frequency can be improved, meanwhile, the annular spring ring enables the two arc-shaped shells to automatically return after being impacted, the stroke of next impact is improved, and the crushing effect can be improved;

as a further improvement of the utility model, the outer end of each piston rod is a spherical surface; the stress effect during impact can be improved, and the crushing effect is further improved;

as a further improvement of the utility model, the outer circles of the pistons are all provided with ring grooves, and the ring grooves are all internally provided with ultrahigh pressure sealing rings; the leakage is reduced, and the crushing effect is improved;

to sum up, the utility model has the advantages of striking frequency is high, the stroke is long, can improve crushing effect.

Drawings

Fig. 1 is a front view of an embodiment of the present invention.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a left side view of the two arcuate housings of fig. 1.

Fig. 4 is a left side view of fig. 1 with two arcuate outer shells removed.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 4, the rock stratum crushing hydraulic device of the embodiment includes two arc-shaped housings 1 and a hydraulic cylinder 2 disposed in the two arc-shaped housings 1, the hydraulic cylinder 2 includes a cylinder barrel 3, a cavity-extending oil path 4 disposed in the cylinder barrel, and a plurality of parallel piston cavities, inner ends of the piston cavities are connected to the cavity-extending oil path 4, outer ends of the piston cavities are connected to a guide sleeve 5, the piston cavities are slidably provided with a piston rod 6 and a piston 8, the piston rods 8 slidably penetrate through the respective guide sleeves 5, outer ends of the piston rods 6 are spherical surfaces 7, the pistons 8 are disposed at inner ends of the respective piston cavities, an annular groove is disposed on an outer circle of the piston 8, an ultra-high pressure seal ring 9 is disposed in the annular groove, and a return spring 11 is sleeved outside the piston rod 6 between the guide sleeve 5 and the corresponding piston 8; three radial grooves are formed in the outer circumferences of the two arc-shaped shells 1, and the three annular spring rings 12 are arranged in the radial grooves of the two arc-shaped shells 1.

When the crushing device is used, a plurality of holes are pre-drilled in one circle of a rock stratum through a water drill, the two arc-shaped shells 1 with the same size as the water drill are placed in the pre-drilled holes, the extending cavity oil circuit 4 controls the piston rods 6 to extend out, and the piston rods retract automatically by the aid of the return spring 11, so that the response speed is high, the impact frequency can be improved, meanwhile, the two arc-shaped shells 1 automatically return after being impacted by the annular spring ring 12, the stroke of next impact is improved, and the crushing effect can be improved; the spherical surface 7 can improve the stress effect during impact, and the ultrahigh pressure sealing ring 9 reduces leakage and further improves the crushing effect.

Claims

1. A rock stratum crushing hydraulic device comprises two arc-shaped shells and a hydraulic cylinder arranged between the two arc-shaped shells, wherein the hydraulic cylinder comprises a cylinder barrel and a cavity extending oil way arranged in the cylinder barrel; the outer circumferences of the two arc-shaped shells are respectively provided with more than two radial grooves, and more than two annular spring rings are arranged in the radial grooves of the two arc-shaped shells.

2. The hydraulic rock formation breaking device as claimed in claim 1, wherein the outer end of each piston rod is spherical.

3. The hydraulic rock stratum breaking device according to claim 1 or 2, wherein the piston is provided with ring grooves on the outer circumference, and ultrahigh pressure sealing rings are arranged in the ring grooves.