Hydraulic impact mechanism

Abstract

A hydraulic impact mechanism comprises an upper cylinder body, an oil cylinder, a lower cylinder body, a piston, a reversing valve, a guide sleeve, a drill rod pin, a fixing pin, a locking bolt and an oil seal, wherein the oil cylinder is arranged between the upper cylinder body and the lower cylinder body, and the upper cylinder body, the oil cylinder and the lower cylinder body are fixed by locking bolts; a piston hole and a reversing valve hole are processed on the upper end face of the oil cylinder, a frequency conversion valve hole is processed on one side of the oil cylinder, and a safety valve hole is processed on the other side adjacent to the side of the oil cylinder, a frequency conversion valve for adjusting the working frequency of the hydraulic impact mechanism is installed in the frequency conversion valve hole, and a safety valve for controlling the working state of the hydraulic impact mechanism is installed in the safety valve hole; the frequency conversion valve of the present invention realizes the conversion of the working frequency of the mechanism by adjusting the working frequency of the reversing valve through interaction with the oil cylinder and the piston, thereby prolonging the service life and increasing the adaptability to different working conditions and environments; the working state of the mechanism is also controlled by the safety valve, so as to improve the working efficiency and effectively reduce the energy consumption.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering machinery, and in particular relates to a hydraulic impact mechanism. Background Art

[0002] With the continuous development of the global economy, hydraulic impact related application technologies have also been rapidly developed and widely used, especially in the fields of mineral resource development and infrastructure construction. The hydraulic impact mechanism plays a vital role in the operation of mechanical equipment such as excavators and loaders. For example, the hydraulic system is used as the power to output impact energy, thereby crushing stones, concrete, etc.

[0003] As the demands for engineering operations become more and more diversified, the market has put forward higher and higher requirements on the performance of hydraulic impact equipment. In the existing hydraulic impact mechanism, it is usually adopted to combine hydraulic energy and air pressure energy to transmit energy to the working object, and then act on the working object to complete the working purpose, such as crushing ore.

[0004] However, in the above operation process, due to design reasons, the impact frequency and the output state of the controlled energy cannot be adjusted according to different working conditions, so that the same energy is still output for different working conditions, the working conditions do not match, and the "sledgehammer is used to kill a fly" results in poor safety, waste of energy, low work efficiency, inconvenience in use and other problems. Summary of the invention

[0005] The object of the present invention is to provide a hydraulic impact mechanism whose operating frequency can be adjusted according to different working conditions.

[0006] Another object of the present invention is to provide a hydraulic impact mechanism with adjustable working state and high safety.

[0007] In order to solve the above technical problems, the present invention discloses a hydraulic impact mechanism, which is a full hydraulic crushing device used in the field of engineering construction, comprising an upper cylinder body, an oil cylinder, a lower cylinder body, a piston, a reversing valve, a guide sleeve, a drill rod pin, a fixing pin, a pinning bolt and an oil seal, wherein the oil cylinder is arranged between the upper cylinder body and the lower cylinder body, and the upper cylinder body, the oil cylinder and the lower cylinder body are fixed by pinning bolts; a piston hole and a reversing valve hole are processed on the upper end surface of the oil cylinder, a frequency conversion valve hole is processed on one side of the oil cylinder, and a safety valve hole is processed on the other side adjacent to the side of the oil cylinder, a piston is installed on the piston hole, a reversing valve is installed on the reversing valve hole, a frequency conversion valve for adjusting the working frequency of the hydraulic impact mechanism is installed in the frequency conversion valve hole, and a safety valve for controlling the working state of the hydraulic impact mechanism is installed in the safety valve hole.

[0008] Preferably, a drill rod pin hole is processed on the side of the lower cylinder body, a positioning slot is processed on the other side adjacent to the side of the lower cylinder body, a drill rod pin is arranged in the drill rod pin hole, a fixing pin is arranged in the positioning slot, and a guide sleeve is arranged at the bottom of the lower cylinder body.

[0009] Preferably, there are multiple positioning slots, so that the fixing pin has multiple fixing positions; there are multiple drill rod pin holes, so that the drill rod pin has multiple fixing positions.

[0010] Preferably, the frequency conversion valve hole includes two frequency conversion valve holes distributed up and down, and the frequency conversion valve includes an auxiliary frequency conversion valve and a main frequency conversion valve, and the auxiliary frequency conversion valve and the main frequency conversion valve are respectively arranged in the two frequency conversion valve holes.

[0011] Preferably, the frequency conversion valve adjusts the operating frequency of the mechanism by adjusting the operating frequency of the reversing valve through the coordinated action of the cylinder and the piston. When the frequency conversion valve is processing a hard working environment, the flow rate of the hydraulic oil in the frequency conversion valve becomes slower, the piston moves slower, and the stroke becomes larger. When processing a soft working environment, the flow rate of the hydraulic oil in the frequency conversion valve becomes faster, the piston moves faster, and the stroke becomes smaller.

[0012] Preferably, the safety valve is provided with a replaceable valve core, and the safety valve controls the working state of the control mechanism by replacing the valve core, and the working state includes a working mode and a non-working mode of the control mechanism.

[0013] Preferably, a piston ring is provided at the bottom of the upper cylinder body.

[0014] Preferably, a positioning groove is processed at the end of the fixing pin.

[0015] Preferably, it also includes an external housing,

[0016] Preferably, the upper cylinder body is in a stepped shape with a width at the top and a narrowness at the bottom, so as to facilitate assembly with the external housing.

[0017] The hydraulic impact mechanism of the present invention has at least the following advantages:

[0018] The frequency conversion valve of the present invention realizes the conversion of the working frequency of the mechanism by adjusting the working frequency of the reversing valve through interaction with the oil cylinder and the piston, thereby extending the service life and increasing the adaptability to different working conditions and environments; the working state of the mechanism is also controlled by the safety valve to switch it between the working mode and the non-working mode, thereby increasing the convenience and safety of the operation of the hydraulic impact mechanism, improving work efficiency and effectively reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the left view of the mechanism of the present invention

[0020] Figure 2 A top view of the mechanism of the present invention

[0021] Figure 3 It is the right side view of the mechanism of the present invention.

[0022] Figure 4 It is a schematic diagram of the overall structure explosion of the hydraulic impact mechanism of the present invention.

[0023] The numbers in the figure are: 1-upper cylinder body, 101-piston ring, 102-step, 2-oil cylinder, 3-lower cylinder body, 4-piston, 5-reversing valve, 6-frequency conversion valve, 7-safety valve, 701-valve core, 8-guide sleeve, 9-drill rod pin, 901 drill rod pin hole, 10-fixing pin, 1001-positioning groove, 1002-positioning slot hole, 11-pin tightening bolt. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below through examples so that those skilled in the art can implement the invention with reference to the description.

[0025] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0026] like Figure 1-4 As shown, a hydraulic impact mechanism is a full hydraulic crushing device used in the field of engineering construction, comprising an upper cylinder body 1, an oil cylinder 2, a lower cylinder body 3, a piston 4, a reversing valve 5, a frequency conversion valve 6, a safety valve 7, a guide sleeve 8, a drill rod pin 9, a fixing pin 10, a pinning bolt 11 and an oil seal, wherein the oil cylinder 2 is arranged between the upper cylinder body 1 and the lower cylinder body 3, and the upper cylinder body, the oil cylinder and the lower cylinder body are fixed by the pinning bolt 11; a piston hole and a reversing valve hole are processed on the upper end face of the oil cylinder, a frequency conversion valve hole is processed on one side of the oil cylinder, and a safety valve hole is processed on the other side adjacent to the side of the oil cylinder, a piston is installed on the piston hole, a reversing valve is installed on the reversing valve hole, a frequency conversion valve for adjusting the working frequency of the hydraulic impact mechanism is installed in the frequency conversion valve hole, and a safety valve for controlling the working state of the hydraulic impact mechanism is installed in the safety valve hole. The hydraulic impact mechanism of the present invention is mainly used in mining and engineering infrastructure, and is attached to mechanical equipment such as excavators and loaders. It uses the hydraulic system as power to output impact energy to crush the working object and complete the working task.

[0027] A drill rod pin hole 901 is processed on the side of the lower cylinder body, and a positioning slot 1002 is processed on the other side adjacent to the side of the lower cylinder body. A drill rod pin is arranged in the drill rod pin hole, a fixing pin is arranged in the positioning slot, and a guide sleeve is arranged at the bottom of the lower cylinder body.

[0028] There are multiple positioning slots, so that the fixing pin has multiple fixing positions; there are multiple drill rod pin holes, so that the drill rod pin has multiple fixing positions.

[0029] The frequency conversion valve hole includes two holes distributed in an upper and lower manner. The frequency conversion valve includes an auxiliary frequency conversion valve and a main frequency conversion valve. The auxiliary frequency conversion valve and the main frequency conversion valve are respectively arranged in the two frequency conversion valve holes.

[0030] The frequency conversion valve adjusts the working frequency of the reversing valve through the coordinated action of the oil cylinder and the piston, so that the hydraulic impact mechanism can be switched to different working frequencies according to work needs, complete corresponding work tasks, and improve the working efficiency of the mechanism.

[0031] When the frequency conversion valve is used in a hard working environment, the flow rate of the hydraulic oil in the frequency conversion valve slows down, the piston moves slower, the stroke becomes larger, and the working frequency slows down; when it is used in a soft working environment, the flow rate of the hydraulic oil in the frequency conversion valve increases, the piston moves faster, the stroke becomes smaller, and the working frequency increases. For example, when the working environment changes from a soft working environment to a hard working environment (such as a concrete floor), the impact rebound speed of the piston head will increase. This change is fed back to the frequency conversion valve through the flow rate and pressure of the hydraulic oil in the oil hole, forcing the frequency conversion valve to redistribute the flow of the hydraulic oil by adjusting the reversing valve, so that the working frequency and stroke of the piston change.

[0032] The safety valve 7 is provided with a replaceable valve core 701. The safety valve controls the working state of the control mechanism by replacing the valve core. The working state includes a working mode and a non-working mode of the control mechanism.

[0033] A piston ring 101 is disposed at the bottom of the upper cylinder body 1 .

[0034] A positioning groove 1001 is processed at the end of the fixing pin 10 .

[0035] The utility model also comprises an external shell body, and the shell body is used for protecting the upper cylinder body, the oil cylinder and the lower cylinder body.

[0036] Furthermore, the safety valve 7 added by the present invention can achieve the purpose of controlling the working state of the mechanism as needed by replacing different valve cores 701, such as putting the mechanism in working mode or non-working mode, that is, when there is no operation task temporarily or the use of the mechanism needs to be suspended, the mechanism is put in non-working mode, which improves the operating convenience and safety of the mechanism and saves energy consumption.

[0037] Of course, the above-mentioned embodiment of simultaneously installing the frequency conversion valve 6 and the safety valve 7 of the present invention is only a preferred embodiment of the present invention. In actual application, the two can also be installed and applied separately as needed, that is, only the frequency conversion valve 6 is installed to realize that the hydraulic impact mechanism can be converted to different working frequencies. Or only the safety valve 7 is installed to realize that the mechanism can switch between the working mode and the non-working mode.

[0038] In addition, a preferred embodiment of the present invention is that the upper cylinder body 1 can be connected with the piston ring 101, so as to improve the sealing performance of the mechanism and reduce the probability of gas leakage.

[0039] As another preferred embodiment of the present invention, the fixing pin 10 may be fixed by using a fixing pin with a positioning groove 1001, thereby increasing the fastness of the fixing pin and ensuring that the fixing pin is not easy to fall off during use.

[0040] As another preferred embodiment, the upper cylinder body 1 can be connected to the housing through a step 102, thereby increasing the convenience of installation.

[0041] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the embodiments shown and described herein.

Claims

1. A hydraulic impact mechanism, which is a fully hydraulic crushing device used in the field of engineering construction, characterized in that: It includes an upper cylinder body, an oil cylinder, a lower cylinder body, a piston, a reversing valve, a guide sleeve, a drill rod pin, a fixing pin, a pinning bolt and an oil seal. The oil cylinder is arranged between the upper cylinder body and the lower cylinder body, and the upper cylinder body, the oil cylinder and the lower cylinder body are fixed by pinning bolts; the upper end surface of the oil cylinder is processed with a piston hole and a reversing valve hole, a side surface of the oil cylinder is processed with a frequency conversion valve hole, and another side surface adjacent to the side surface of the oil cylinder is processed with a safety valve hole, a piston is installed on the piston hole, a reversing valve is installed on the reversing valve hole, a frequency conversion valve for adjusting the working frequency of the hydraulic impact mechanism is installed in the frequency conversion valve hole, and a safety valve for controlling the working state of the hydraulic impact mechanism is installed in the safety valve hole; The side of the lower cylinder body is processed with a drill rod pin hole, and the other side adjacent to the side of the lower cylinder body is processed with a positioning slot hole, a drill rod pin is arranged in the drill rod pin hole, a fixing pin is arranged in the positioning slot hole, and a guide sleeve is arranged at the bottom of the lower cylinder body; The frequency conversion valve hole includes two holes distributed in an upper and lower direction, and the frequency conversion valve includes an auxiliary frequency conversion valve and a main frequency conversion valve, and the auxiliary frequency conversion valve and the main frequency conversion valve are respectively arranged in the two frequency conversion valve holes; The frequency conversion valve adjusts the working frequency of the reversing valve by the coordinated action of the oil cylinder and the piston to adjust the working frequency of the mechanism. When the frequency conversion valve is used in a hard working environment, the flow rate of the hydraulic oil in the frequency conversion valve slows down, the piston moves slower, and the stroke becomes larger. When the frequency conversion valve is used in a soft working environment, the flow rate of the hydraulic oil in the frequency conversion valve speeds up, the piston moves faster, and the stroke becomes smaller. The safety valve is provided with a replaceable valve core, and the safety valve controls the working state of the control mechanism by replacing the valve core, and the working state includes a working mode and a non-working mode of the control mechanism.

2. The hydraulic impact mechanism according to claim 1, characterized in that: There are multiple positioning slots, so that the fixing pin has multiple fixing positions; there are multiple drill rod pin holes, so that the drill rod pin has multiple fixing positions.

3. The hydraulic impact mechanism according to claim 1, characterized in that: A piston ring is arranged at the bottom of the upper cylinder body.

4. The hydraulic impact mechanism according to claim 1, characterized in that: A positioning groove is processed on the end of the fixing pin.

5. The hydraulic impact mechanism according to claim 1, characterized in that: Also includes an external shell.

6. The hydraulic impact mechanism according to claim 5, characterized in that: The upper cylinder body is in a stepped shape with a width at the top and a narrowness at the bottom, so as to facilitate assembly with the external shell.

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