Oil return system for cylinder body of breaking hammer

Abstract

The utility model discloses a breaking hammer cylinder body oil return system, which relates to the related field of breaking hammer cylinders and comprises a cylinder body, a drill rod is slidably mounted in an opening at the front end of the cylinder body, oil inlets and outlets are arranged at the top and the bottom of the cylinder body, and a cleaning device is arranged at the front end of the cylinder body. Dust and broken stones attached to the outer side of the drill rod can be cleaned through a scraping disc and a spray head, so that the dust and the broken stones attached to the outer side face of the drill rod can be conveniently scraped and cleaned, and the scraping disc can be assisted in cleaning through airflow; the defoaming device is arranged at the rear end of a guide pipe connected with an oil inlet and outlet in the top of the cylinder body, impurities and bubbles can be filtered through a filter pressing cloth layer and a filter screen, and therefore hydraulic oil can be conveniently cooled, the flow speed of the hydraulic oil is reduced by making contact with an arc face, and the service life of the hydraulic oil is prolonged. And impurities and bubbles can be filtered and defoamed by using the filter pressing cloth layer and the filter screen.

Description

Technical Field

[0001] The utility model relates to the relevant field of a breaker hammer cylinder, in particular to an oil return system for a breaker hammer cylinder. Background Art

[0002] As the country's safety and environmental protection requirements for construction environments such as road construction, demolition of dangerous buildings, and mining continue to increase, the requirements for the use of explosives are becoming more and more stringent. Therefore, the proportion of excavators equipped with breakers is increasing, and major host manufacturers have launched special breakers.

[0003] When the oil return system of the breaker hammer cylinder in the prior art drives the drill rod to work, a large amount of dust and gravel will adhere to the surface of the drill rod, causing the drill rod 2 to become clogged during use, and dust entering the cylinder can easily cause the oil circuit to be blocked; and the oil return system of the breaker hammer cylinder in the prior art will increase the temperature of the hydraulic oil during operation, and the hydraulic oil is prone to generate bubbles when the flow rate is fast and collides, and the generated bubbles can easily cause damage to the equipment. Utility Model Content

[0004] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a breaker hammer cylinder oil return system.

[0005] The utility model is achieved in that a kind of oil return system of the cylinder body of a breaker hammer is constructed, the device comprises a cylinder body, a drill rod is slidably installed in a hole at the front end of the cylinder body, and oil inlet and outlet are arranged on the top and bottom of the cylinder body; a cleaning device is arranged at the front end of the cylinder body; a defoaming device is arranged at the rear end of a conduit connected to the oil inlet and outlet at the top of the cylinder body; the cleaning device comprises: a fixed sleeve, the front end surface of the cylinder body is fixed with a fixed sleeve by screws; a scraper plate, the front end of the inner side surface of the fixed sleeve is welded and installed with a scraper plate; a nozzle, the front end surface of the fixed sleeve is fixedly connected with the nozzle by a round rod; a mounting pipe, the top and bottom of the cylinder body are respectively bolted with mounting pipes, and the front end through hole of the mounting pipe is connected with the nozzle pipeline by a conduit; a fan, the front end of the inner wall of the mounting pipe is bolted with a fan; an air collecting hopper, the middle end of the inner wall of the mounting pipe is fixed with an air collecting hopper by screws; a one-way valve, the rear end port pipeline of the air collecting hopper is installed with a one-way valve.

[0006] Preferably, the defoaming device comprises: a connecting pipe, the conduit connected to the oil inlet and outlet at the top of the cylinder body is connected to the connecting pipe pipeline; a heat sink, and a heat sink is arranged on the outer side of the connecting pipe.

[0007] Preferably, the defoaming device further comprises: a heat-conducting sleeve, to which the outer side surface of the connecting tube is fixedly connected; and a buffer sheet, to which the front end of the inner wall of the connecting tube is clamped and installed.

[0008] Preferably, the defoaming device further comprises: a filter press cloth layer, which is fixed by bolts at the middle end of the inner wall of the connecting pipe; and a filter screen, which is provided at the rear end of the inner wall of the connecting pipe.

[0009] Preferably, the filter screens arranged at the rear end of the inner wall of the connecting pipe are staggered with each other.

[0010] Preferably, a dustproof net and an activated carbon layer are provided at the rear end of the inner wall of the installation tube.

[0011] Preferably, the outer side of the scraper disc is evenly coated with a wear-resistant layer.

[0012] The utility model has the following advantages: The utility model provides a breaker hammer cylinder oil return system through improvement, which has the following improvements compared with the same type of equipment:

[0013] The utility model discloses a breaker hammer cylinder oil return system, by arranging a cleaning device at the front end of the cylinder body, the dust and gravel attached to the outer side of the drill rod can be cleaned by a scraper and a nozzle, thus it is convenient to scrape and clean the dust and gravel attached to the outer side of the drill rod, avoid the drill rod from being clogged during operation, and avoid dust from entering the cylinder body to cause the oil circuit to be clogged, and the airflow can assist the scraper in cleaning, thereby reducing the possibility of damage to the drill rod.

[0014] The utility model discloses a breaker hammer cylinder oil return system, by arranging a defoaming device at the rear end of the conduit connected to the oil inlet and outlet on the top of the cylinder body, impurities and bubbles can be filtered through the filter cloth layer and the filter net, which helps to conveniently dissipate heat of the hydraulic oil, and reduces the flow rate of the hydraulic oil through contact with the arc surface, reduces the generation of bubbles, and utilizes the filter cloth layer and the filter net to filter and defoam impurities and bubbles, effectively extending the service life of the cylinder body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the cleaning device of the utility model;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the scraper, fan and air collecting bucket of the utility model;

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the cleaning device of the utility model;

[0019] Figure 5 It is a right view structural schematic diagram of the cleaning device of the utility model.

[0020] Among them: cylinder body-1, drill rod-2, oil inlet and outlet-3, cleaning device-4, defoaming device-5, fixed sleeve-41, scraper-42, nozzle-43, installation pipe-44, fan-45, air collecting bucket-46, one-way valve-47, connecting pipe-51, heat sink-52, heat conduction sleeve-53, buffer sheet-54, filter cloth layer-55, filter screen-56. DETAILED DESCRIPTION

[0021] The following is combined with Figures 1 to 5 The principles and features of the present invention are described, and the examples given are only used to explain the present invention, and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0022] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] Embodiment 1:

[0025] See also Figure 1 to Figure 5 The utility model discloses a breaker hammer cylinder oil return system, comprising a cylinder 1, a front end of the cylinder 1 is provided with a hole on which a drill rod 2 is slidably mounted, and the top and bottom of the cylinder 1 are both provided with oil inlets and outlets 3.

[0026] A cleaning device 4 is provided at the front end of the cylinder body 1, and a defoaming device 5 is provided at the rear end of the conduit connected to the oil inlet and outlet 3 at the top of the cylinder body 1. The cleaning device 4 includes a fixed sleeve 41 fixed to the front end face of the cylinder body 1 by screws, and a scraper 42 is welded and installed at the front end of the inner side of the fixed sleeve 41. The dust and gravel attached to the outer side of the drill rod 2 are scraped off and cleaned by the scraper 42. The front end face of the fixed sleeve 41 is fixedly connected to the nozzle 43 through a round rod. The top and bottom of the cylinder body 1 are respectively bolted with mounting pipes 44, and the mounting pipes 44 provide a platform for mounting other components.

[0027] The through hole at the front end of the mounting tube 44 is connected to the nozzle 43 pipeline through a conduit, a fan 45 is installed with bolts at the front end of the inner wall of the mounting tube 44, an air collecting hopper 46 is fixed to the middle end of the inner wall of the mounting tube 44 by screws, and a one-way valve 47 is installed at the rear end port pipeline of the air collecting hopper 46 to prevent the air from escaping directly, a dustproof net and an activated carbon layer are arranged at the rear end of the inner wall of the mounting tube 44 to facilitate filtering of impurities inside the air, and the outer side surface of the scraper 42 is evenly coated with a wear-resistant layer to effectively reduce the wear caused by the scraper 42 contacting with the drill rod 2.

[0028] The working principle of a breaker cylinder oil return system based on Example 1 is:

[0029] First, when using this device, first place the device in the working area, and then connect the device to an external power source to provide the device with the power required for operation;

[0030] Second, when the hammer cylinder 1 drives the drill rod 2 to work, a large amount of dust and gravel will adhere to the surface of the drill rod 2. When the drill rod 2 is reciprocating, the drill rod 2 contacts the scraper 42, and the scraper 42 scrapes off the dust and gravel attached to the outer side surface;

[0031] Third, at the same time, the user starts the fan 45 through the control terminal, and the air is filtered by the dustproof net and the activated carbon layer. The fan 45 extracts the air through the air collecting hopper 46 and the one-way valve 47, and the airflow is sprayed to the drill rod 2 and the scraper 42 through the nozzle 43, thereby assisting the scraper 42 to blow off the outer side of the drill rod 2 and some residual dust and gravel;

[0032] Fourth, prevent the residual dust and gravel from damaging the drill rod 2. This makes it easy to scrape off the dust and gravel attached to the outer side of the drill rod 2 to avoid the drill rod 2 from being blocked during operation, and prevent dust from entering the cylinder 1 to cause oil circuit blockage. The airflow can assist the scraper 42 in cleaning, reducing the risk of damage to the drill rod 2.

[0033] Embodiment 2:

[0034] See also Figure 1 to Figure 5Compared with the first embodiment, the present invention is a hydraulic oil return system for a breaker cylinder. The present embodiment further includes: a debubbling device 5 includes a conduit connected to the oil inlet and outlet 3 at the top of the cylinder 1 and a connecting pipe 51 connected thereto. A heat sink 52 is provided on the outer side of the connecting pipe 51. The connecting pipe 51 provides a platform for installing other components. A heat conducting sleeve 53 is fixedly connected to the outer side of the connecting pipe 51. Part of the heat inside the hydraulic oil is absorbed and discharged by the heat conducting sleeve 53.

[0035] A buffer sheet 54 is clamped and installed at the front end of the inner wall of the connecting pipe 51. The hydraulic oil with a faster flow rate is decelerated after contacting the arc surface of the buffer sheet 54. A filter cloth layer 55 is bolted to the middle end of the inner wall of the connecting pipe 51. A filter screen 56 is arranged at the rear end of the inner wall of the connecting pipe 51. The filter screens 56 arranged at the rear end of the inner wall of the connecting pipe 51 are staggered with each other. Impurities and bubbles can be filtered and defoamed through the filter screens 56.

[0036] In this embodiment:

[0037] First, the hydraulic oil inside the hammer cylinder 1 is prone to generate bubbles at high temperatures and in collision situations. Therefore, when the high-temperature hydraulic oil reaches the connecting pipe 51 through the conduit, part of the heat inside the hydraulic oil is absorbed and discharged by the heat-conducting sleeve 53.

[0038] Second, the heat is then absorbed by the heat sink 52 and dissipated in contact with the air, and the hydraulic oil with a faster flow rate is decelerated after contacting the arc surface of the buffer sheet 54;

[0039] Third, when the hydraulic oil contains impurities or bubbles, the impurities and bubbles can be filtered out through the filter cloth layer 55 and the filter screen 56;

[0040] Fourth, the durability of the equipment is improved, which helps to conveniently dissipate the heat of the hydraulic oil, and reduces the flow rate of the hydraulic oil by contacting the curved surface, reduces the generation of bubbles, and uses the filter cloth layer 55 and the filter mesh 56 to filter and remove bubbles from impurities and bubbles, effectively extending the service life of the cylinder body 1.

[0041] The utility model provides an improved oil return system for a breaker cylinder, wherein a cleaning device 4 is arranged at the front end of the cylinder 1, and dust and gravel attached to the outer side of the drill rod 2 can be cleaned by a scraper 42 and a nozzle 43, so that it is convenient to scrape and clean the dust and gravel attached to the outer side of the drill rod 2, avoid the drill rod 2 from being blocked during operation, and avoid dust from entering the cylinder 1 to cause blockage of the oil circuit, and the scraper 42 can be assisted by airflow to clean, thereby reducing the damage to the drill rod 2; a defoaming device 5 is arranged at the rear end of a conduit connected to the oil inlet and outlet 3 at the top of the cylinder 1, and impurities and bubbles can be filtered by a filter cloth layer 55 and a filter screen 56, so that it is helpful to conveniently dissipate heat for the hydraulic oil, and reduce the flow rate of the hydraulic oil by contacting with the arc surface, reduce the generation of bubbles, and filter and defoam impurities and bubbles by using the filter cloth layer 55 and the filter screen 56, thereby effectively extending the service life of the cylinder 1.

[0042] The above shows and describes the basic principle, main features and advantages of the utility model, and the standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0043] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A breaker hammer cylinder oil return system, comprising a cylinder (1), a front end of the cylinder (1) having a hole on which a drill rod (2) is slidably mounted, and the top and bottom of the cylinder (1) are both provided with oil inlets and outlets (3); Features: It also comprises a cleaning device (4), the front end of the cylinder body (1) being provided with the cleaning device (4); a defoaming device (5), the rear end of a conduit connected to the oil inlet and outlet (3) at the top of the cylinder body (1) being provided with the defoaming device (5); The cleaning device (4) comprises: a fixed sleeve (41), the front end surface of the cylinder body (1) being fixed with the fixed sleeve (41) by means of screws; a scraper (42), the front end of the inner side surface of the fixed sleeve (41) being welded with the scraper (42); a nozzle (43), the front end surface of the fixed sleeve (41) being fixedly connected to the nozzle (43) by means of a round rod; a mounting pipe (44), the top and bottom of the cylinder body (1) being respectively fixed with mounting pipes (44) by means of bolts, the front end through hole of the mounting pipe (44) being connected to the nozzle (43) pipeline by means of a guide tube; a fan (45), the front end of the inner wall of the mounting pipe (44) being fixed with the fan (45) by means of bolts; an air collecting hopper (46), the middle end of the inner wall of the mounting pipe (44) being fixed with the air collecting hopper (46) by means of screws; and a one-way valve (47), the rear end port pipeline of the air collecting hopper (46) being installed with the one-way valve (47).

2. According to claim 1, a breaker cylinder oil return system is characterized by: The defoaming device (5) comprises: a connecting pipe (51), a conduit connected to the oil inlet and outlet (3) at the top of the cylinder body (1) is connected to the connecting pipe (51); and a heat sink (52), a heat sink (52) is provided on the outer side of the connecting pipe (51).

3. According to claim 2, a breaker cylinder oil return system is characterized in that: The defoaming device (5) further comprises: a heat-conducting sleeve (53), to which the outer side surface of the connecting tube (51) is fixedly connected; and a buffer sheet (54), to which the front end of the inner wall of the connecting tube (51) is clamped and mounted.

4. According to claim 3, a breaker cylinder oil return system is characterized in that: The defoaming device (5) further comprises: a filter cloth layer (55), the filter cloth layer (55) being fixed by bolts at the middle end of the inner wall of the connecting tube (51); and a filter screen (56), the filter screen (56) being arranged at the rear end of the inner wall of the connecting tube (51).

5. According to claim 4, a breaker cylinder oil return system is characterized in that: The filter screens (56) arranged on the rear end of the inner wall of the connecting pipe (51) are staggered.

6. The oil return system for a breaker cylinder according to claim 5, characterized in that: The rear end of the inner wall of the installation tube (44) is provided with a dustproof net and an activated carbon layer.

7. The oil return system for a breaker cylinder according to claim 6, characterized in that: The outer side surface of the scraper (42) is evenly coated with a wear-resistant layer.

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