CN219931096U

CN219931096U - Damping device for breaking hammer

Info

Publication number: CN219931096U
Application number: CN202321062912.2U
Authority: CN
Inventors: 王磊; 王峥琦; 刘科闰
Original assignee: Ningbo Quanheng Machinery Co ltd
Current assignee: Ningbo Quanheng Machinery Co ltd
Priority date: 2023-05-06
Filing date: 2023-05-06
Publication date: 2023-10-31
Anticipated expiration: 2033-05-06

Abstract

The utility model relates to the technical field of breaking hammers, in particular to a damping device for a breaking hammer. Its technical scheme includes support, spring, fixed plate, hammer block, sleeve, cock stem and piston, the hammer block upper end is provided with the fixed plate, the fixed plate top is provided with the support, all be provided with the spring between support and the fixed plate, both ends all are provided with the mounting panel about the spring, the inside sleeve and the cock stem of being provided with respectively of spring, the cock stem lower extreme is provided with the piston, the inside oil groove that all is provided with in sleeve inside both ends, valve port one and valve port two have been seted up respectively to the piston inside, valve port one inside is provided with check valve one, valve port two inside is provided with check valve two. According to the utility model, the damping device is arranged at the upper end of the breaking hammer, so that the impact force applied to the breaking hammer is reduced, the problem that the breaking hammer directly receives the impact force for a long time and has large loss is solved, the damping component in the damping device is protected, and the use stability is improved.

Description

Damping device for breaking hammer

Technical Field

The utility model relates to the technical field of breaking hammers, in particular to a damping device for a breaking hammer.

Background

When the special skill works, the special skill should deal with the hard ground surface, and the hard objects are impacted and crushed by the breaking hammer.

The search of the publication number CN216787250U belongs to the technical field of engineering machinery application, and particularly discloses a breaking hammer which comprises a breaking hammer body, a drill rod and an obstacle clearing mechanism, wherein the obstacle clearing mechanism is symmetrically distributed on two sides of the breaking hammer body and fixedly connected with shells on two sides of the breaking hammer body. The breaking hammer has the beneficial effects that: 1. in the construction process of the breaking hammer, when more scattered broken stones exist on a construction pavement, the obstacle clearing mechanism starts to work, and a bucket cavity of the bucket can contain a large amount of broken stones, so that effective cleaning of the broken stones on the pavement is realized, and uninterrupted construction is ensured; 2. in the whole process of crushing construction, the obstacle clearing work on the road surface can be completed without other broken stone clearing equipment, and the construction efficiency of the breaking hammer is improved.

The breaking hammer has the advantages when being used in CN216787250U, but the breaking hammer is used for enabling the hammer rod to impact the ground all the time through hydraulic pressure, the breaking hammer is subjected to the reverse impact force of hard ground during impact, the upper end of the breaking hammer of the device is not provided with an effective damping device, the breaking hammer is directly subjected to the reverse impact force, and the use loss is large, so that the damping device for the breaking hammer is provided for solving the existing problems.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a damping device for a breaking hammer.

In order to achieve the above purpose, the present utility model provides the following technical solutions: damping device for quartering hammer, including support, spring, fixed plate, hammer block, sleeve, cock stem and piston, the hammer block upper end is provided with the fixed plate, the fixed plate top is provided with the support, all be provided with the spring between support and the fixed plate, both ends all are provided with the mounting panel about the spring, the inside sleeve and the cock stem of being provided with respectively of spring, the cock stem lower extreme is provided with the piston, the inside oil groove that all is provided with in sleeve inside both ends, valve port one and valve port two have been seted up respectively to the piston inside, valve port one inside is provided with the check valve one, valve port two inside is provided with the check valve two.

When the damping device for the breaking hammer is used, when the hammer body works to impact hard ground, the reverse impact force acts on the hammer body, the reverse impact force acts on the spring, the spring is stressed to shrink, when the spring is contracted, the piston extrudes hydraulic oil, the hydraulic oil is pressurized downwards and enters the oil groove, the space of an oil way in the oil groove is narrow and small, the impact force forms resistance, the one-way valve is opened, part of hydraulic oil passes through the valve port I and is decompressed to the impact force, when the spring is elastically restored, the hydraulic oil is extruded upwards, the hydraulic rod flows to the lower end oil groove opening through the upper end oil groove opening, the single valve II is opened by the impact of the oil pressure, the lubricating oil is output through the valve port II, part of the piston pressure is removed, the general resistance to the impact force forms, the damping effect is achieved, the impact of the impact hard ground is buffered and damped to the hammer body, and the loss of the breaking hammer is reduced

Preferably, the bracket is provided with a mounting hole in the side. The mounting hole is used for being connected with the excavator fixing frame.

Preferably, the mounting plate is connected with the bracket and the fixing plate, and the connecting end is rotationally spliced through bolts. The support and the fixing plate are elastically connected through a spring, and the mounting plate, the support and the fixing plate are fixed together through bolts.

Preferably, the lower end of the sleeve and the upper end of the plug rod are connected with the mounting plate. The sleeve and the plug rod are fixed between the mounting plates.

Preferably, the sealing ring is embedded and installed in the upper end of the sleeve, and the lower end of the plug rod is inserted in the sealing ring in a sliding manner. The piston is slidably mounted in the oil cylinder through a sealing ring.

Preferably, the piston is inserted in the sleeve in a sliding manner, a vibration reduction pad is arranged on the inner wall of the lower end of the sleeve, hydraulic oil is arranged in the sleeve and is filled in two-thirds of the space in the sleeve, and openings at two ends of the oil groove are respectively arranged in the upper end of the sleeve and the lower end of the sleeve. The hydraulic oil is a damping medium, plays a role in lubricating a damping assembly, and the damping pad achieves a damping effect when the piston is in reconnection contact with the bottom of the oil cylinder.

Preferably, the one-way valve I is composed of a first travel rod, an elastic sheet I and a limiting sheet I, the first travel rod is inserted into the first valve port, the limiting sheet I is located at the upper end of the first travel rod, the elastic sheet I is located at the outer side of the first travel rod, the upper end of the elastic sheet is connected with the limiting sheet, the lower end of the elastic sheet is connected with the upper end of the piston, the one-way valve II is composed of a second travel rod, an elastic sheet II and a limiting sheet II, the second travel rod is inserted into the second valve port, the limiting sheet II is located at the lower end of the second travel rod, the elastic sheet II is located at the outer side of the travel rod, the upper end of the elastic sheet II is connected with the lower end of the piston, and the lower end of the elastic sheet II is connected with the upper end of the limiting sheet II. The first limiting piece is closed through the first pair of valve ports of the elastic piece, and is opened when being subjected to pressure from bottom to top, the second pair of valve ports of the limiting piece are closed, the second opening of the lower end of the second pair of valve ports of the limiting piece is elastically closed through the second pair of valve ports of the elastic piece, and the second valve ports are opened when being extruded by longitudinal force.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the plurality of damping devices are arranged at the upper end of the breaking hammer, the damping devices are mainly composed of springs, the damping sleeves are arranged in the damping devices, the forces of extrusion shrinkage and reset stretching are reduced, the reverse impact force generated by impacting the ground is prevented from being completely acted on the breaking hammer, the vibration of the breaking hammer in use is reduced, the effect of protecting the breaking hammer is achieved, and the use loss of the breaking hammer is reduced.

Drawings

FIG. 1 is a schematic diagram of a front view of the present utility model;

FIG. 2 is a schematic diagram of the main cross-sectional structure of the present utility model;

FIG. 3 is a schematic view of the bottom structure of the bracket of the present utility model;

fig. 4 is a schematic view of the main sectional structure of the piston of the present utility model.

Reference numerals: 1. a bracket; 2. a spring; 3. a fixing plate; 4. a hammer body; 5. a mounting plate; 6. a sleeve; 7. a piston rod; 8. an oil groove; 9. a vibration damping pad; 10. a seal ring; 11. a valve port I; 12. a first check valve; 13. a piston; 14. a second check valve; 15. and a valve port II.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

As shown in fig. 1-4, the damping device for the breaking hammer provided by the utility model comprises a bracket 1, a spring 2, a fixed plate 3, a hammer 4, a sleeve 6, a plug rod 7 and a piston 13, wherein the fixed plate 3 is arranged at the upper end of the hammer 4, the bracket 1 is arranged above the fixed plate 3, a mounting hole is formed in the side inner part of the bracket 1, the spring 2 is arranged between the bracket 1 and the fixed plate 3, mounting plates 5 are arranged at the upper end and the lower end of the spring 2, the mounting plates 5 are connected with the bracket 1 and the fixed plate 3, the connecting ends are rotationally inserted through bolts, the sleeve 6 and the plug rod 7 are respectively arranged in the spring 2, the lower end of the sleeve 6 and the upper end of the plug rod 7 are respectively connected with the mounting plates 5, a sealing ring 10 is embedded in the upper end of the sleeve 6, the lower end of the plug rod 7 is slidably inserted in the sealing ring 10, the lower end of the plug rod 7 is provided with the piston 13, the inner wall of the lower end of the sleeve 6 is provided with a damping pad 9, the inner part of the sleeve 6 is internally provided with hydraulic oil, two thirds of the space inside the sleeve 6 is filled with the hydraulic oil, the inner part of the sleeve 6 is internally provided with an oil groove 8 is respectively, and the inner ends 8 of the sleeve 6 are respectively opened at the upper end and the lower end of the sleeve 6 are respectively.

The procedure is based on example 1: the reverse impact force acts on the spring 2, the spring 2 atress shrink, when contracting, piston 13 extrudes hydraulic oil, hydraulic oil pressurizes downwards, and enter into the oil groove 8 inside, oil groove 8 inside oil circuit space is narrow and tiny, form resistance to the impact force, when spring 2 spring self elasticity is reset, hydraulic oil is upwards extruded, the hydraulic rod flows to lower extreme oil groove 8 opening through upper end oil groove 8 opening, general resistance to the impact force formation, play the damping effect, and damping medium is lubricating oil, when buffering the force, the inside damping piece of oil drum is lubricated, use stably, impact the stereoplasm ground to hammer 4 plays buffering cushioning effect, avoid returning the impact force and directly act on the connecting piece between hammer 4 and the fixed of excavator, reduce the loss of connecting piece between hammer 4 and the fixed of excavator.

Example two

As shown in fig. 1 to 4, the damping device for a breaking hammer according to the present utility model further includes, compared to the first embodiment: the piston 13 is internally provided with a first valve port 11 and a second valve port 15 respectively, the first valve port 11 is internally provided with a first check valve 12, the second valve port 15 is internally provided with a second check valve 14, the first check valve 12 is composed of a first stroke rod, a first elastic sheet and a first limit sheet, the first stroke rod is inserted into the first valve port 11, the first limit sheet is positioned at the upper end of the first stroke rod, the first elastic sheet is positioned at the outer side of the first stroke rod, the upper end of the elastic sheet is connected with the first limit sheet, the lower end of the elastic sheet is connected with the upper end of the piston 13, the second check valve 14 is composed of a second stroke rod, a second elastic sheet and a second limit sheet, the second stroke rod is inserted into the second valve port 15, the limit sheet is positioned at the lower end of the second stroke rod, the elastic sheet is positioned at the outer side of the stroke rod, the upper end of the second elastic sheet is connected with the lower end of the piston 13, and the lower end of the second elastic sheet is connected with the upper end of the second limit sheet.

In this embodiment, the impact force of the impact hammer is large, in order to prevent the loss of the piston 13 from striking, a first valve port 11 and a second valve port 15 which are longitudinally distributed and unidirectionally opened and closed are arranged in the piston 13, so that the lubricating oil for lifting or lowering the impact force is decompressed, the loss of the piston 13 is reduced, and the damping device is protected.

The above-described embodiments are merely a few preferred embodiments of the present utility model, and many alternative modifications and combinations of the above-described embodiments will be apparent to those skilled in the art based on the technical solutions of the present utility model and the related teachings of the above-described embodiments.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. Damping device for quartering hammer, including support (1), spring (2), fixed plate (3), hammer block (4), sleeve (6), cock stem (7) and piston (13), its characterized in that: the utility model discloses a hammer block, fixed plate, piston, valve port one (11) and valve port two (15) are all offered to hammer block (4) upper end, fixed plate (3) top is provided with support (1), all be provided with spring (2) between support (1) and the fixed plate (3), both ends all are provided with mounting panel (5) about spring (2), spring (2) inside are provided with sleeve (6) and cock stem (7) respectively, cock stem (7) lower extreme is provided with piston (13), sleeve (6) inside both ends are inside all to be provided with oil groove (8), valve port one (11) and valve port two (15) are offered respectively to piston (13) inside, valve port one (11) inside is provided with check valve one (12), valve port two (15) inside is provided with check valve two (14).

2. The damper for a breaking hammer according to claim 1, wherein: the side of the bracket (1) is internally provided with a mounting hole.

3. The damper for a breaking hammer according to claim 1, wherein: the mounting plate (5) is connected with the bracket (1) and the fixing plate (3), and the connecting end is rotationally spliced through bolts.

4. The damper for a breaking hammer according to claim 1, wherein: the lower end of the sleeve (6) and the upper end of the plug rod (7) are connected with the mounting plate (5).

5. The damper for a breaking hammer according to claim 1, wherein: the sealing ring (10) is embedded and installed in the upper end of the sleeve (6), and the lower end of the plug rod (7) is inserted into the sealing ring (10) in a sliding manner.

6. The damper for a breaking hammer according to claim 1, wherein: the piston (13) is inserted into the sleeve (6) in a sliding manner, a vibration reduction pad (9) is arranged on the inner wall of the lower end of the sleeve (6), hydraulic oil is arranged in the sleeve (6), the hydraulic oil is filled in two-thirds space in the sleeve (6), and openings at two ends of the oil groove (8) are respectively arranged in the upper end and the lower end of the sleeve (6).

7. The damper for a breaking hammer according to claim 1, wherein: the one-way valve I (12) is composed of a travel rod I, an elastic sheet I and a limiting sheet I, the travel rod I is inserted into the valve port I (11), the limiting sheet I is located at the upper end of the travel rod I, the elastic sheet I is located at the outer side of the travel rod I, the upper end of the elastic sheet is connected with the limiting sheet, the lower end of the elastic sheet is connected with the upper end of the piston (13), the one-way valve II (14) is composed of a travel rod II, an elastic sheet II and a limiting sheet II, the travel rod II is inserted into the valve port II (15), the limiting sheet II is located at the lower end of the travel rod II, the elastic sheet II is located at the outer side of the travel rod, the upper end of the elastic sheet II is connected with the lower end of the piston (13), and the lower end of the elastic sheet II is connected with the upper end of the limiting sheet II.