A hydraulic-gas combined breaker with an air intake valve dust-proof structure

Abstract

The utility model relates to the technical field of hydraulic-gas combined breaker hammers, and specifically discloses a hydraulic-gas combined breaker hammer with an air intake valve dustproof structure, including a breaker hammer frame, an accumulator is fixed inside the breaker hammer frame, a hydraulic cylinder is connected to the lower end of the accumulator, a drill rod is fixed to the telescopic end of the hydraulic cylinder, a cleaning mechanism for cleaning the breaker rod is provided at the lower end of the breaker hammer frame, and a filtering mechanism for filtering air is installed on one side of the accumulator; the cleaning mechanism includes a cleaning member, the cleaning member is fixed at the lower end of the breaker hammer frame, mounting tubes are fixed at both ends of the cleaning member, and a compression spring is installed inside the mounting tube. Through the cleaning mechanism, under the action of the elasticity of the compression spring itself, impurities adhered to the outer surface of the drill rod that repeatedly moves vertically are cleaned, which can effectively reduce the impurities from entering the cylinder body and avoid the situation of pulling the cylinder.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid-gas combined breaker hammers, in particular to a liquid-gas combined breaker hammer with an air intake valve dustproof structure. Background Art

[0002] The hydraulic-gas combined breaker combines the power of hydraulic oil and the expansion of the compressed nitrogen at the rear to push the piston to work at the same time. In the return stage, the high-pressure oil quickly flows into the front chamber of the breaker cylinder, exerting a certain pressure on the front face of the piston, causing the piston to start the return movement. During the return process, the piston will continuously compress the nitrogen in the nitrogen chamber to store energy. In the stroke stage, the rear chamber of the cylinder is connected to the high-pressure oil circuit by adjusting the reversing valve. The high-pressure oil exerts a downward force on the piston, and the compressed nitrogen releases the stored energy at the same time. The combined force of these forces is downward, pushing the piston to hit the drill rod to complete the crushing operation.

[0003] The existing hydraulic-gas combined breaker has poor impact resistance, and the drill rod and the inside of the hammer body are easily damaged to varying degrees after long-term operation.

[0004] The existing patent (Announcement No.: CN213204270U) discloses an impact-resistant liquid-gas combined breaker, which includes a breaker bracket and a dust shield, a breaker bolt is arranged on the front side of the breaker bracket, and a locking line is arranged on the surface of the breaker bolt, a through bolt is arranged above the breaker bracket, and a nitrogen chamber is arranged below the through bolt, and an air inlet is opened on the right side of the nitrogen chamber. It can play a certain buffering role while breaking the drill rod through the buffer spring, thereby increasing the impact resistance of the breaker.

[0005] In view of the above problems, although the solution given in the existing patent can play a certain buffering role while breaking the drill rod through the buffer spring, it is unable to clean the impurities adhering to the surface of the drill rod when in use. If these impurities enter the cylinder body, it is easy to cause cylinder pulling, thereby reducing the life of the breaker. Summary of the invention

[0006] The purpose of the utility model is to provide a liquid-gas combined breaker hammer with an air intake valve dustproof structure, which can clean impurities adhered to the outer surface of the drill rod that repeatedly moves vertically under the action of the elasticity of the compression spring itself, and can effectively reduce the impurities from entering the cylinder body to avoid cylinder pulling, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the utility model provides the following technical solutions: a hydraulic-gas combined breaker hammer with an air intake valve dustproof structure, comprising a breaker hammer frame, an accumulator is fixed inside the breaker hammer frame, a hydraulic cylinder is connected to the lower end of the accumulator, a drill rod is fixed to the telescopic end of the hydraulic cylinder, a cleaning mechanism for cleaning the breaker rod is provided at the lower end of the breaker hammer frame, and a filter mechanism for filtering air is installed on one side of the accumulator;

[0008] The cleaning mechanism includes a cleaning piece, which is fixed at the lower end of the inside of the breaker hammer frame. Both ends of the cleaning piece are fixed with mounting tubes, a compression spring is installed inside the mounting tube, the end of the compression spring is abutted and connected with a movable rod, the end of the movable rod passes through the cleaning piece and is fixed with a mounting plate, and a cleaning brush is fixed on the inner wall of the mounting plate.

[0009] Preferably, two sets of fixed bearings are fixed to one end of the breaker hammer frame, and fixing bolts are installed on the outer wall of the breaker hammer frame.

[0010] Preferably, the filtering mechanism comprises a dustproof tube, which is installed on the outer surface of the accumulator, a dustproof piece is threadedly connected to the end of the dustproof tube, and a dustproof net is fixed inside the dustproof piece.

[0011] Preferably, a fixing plate is fixed inside the dustproof tube, and a connecting rod passes through the fixing plate.

[0012] Preferably, a fixing block is fixed to one end of the connecting rod.

[0013] Preferably, a return spring abuttingly connected to the fixing block is sleeved on the outer surface of the connecting rod, and one end of the return spring abuts against the fixing plate.

[0014] Preferably, a limiting current plate is fixed to the other end of the connecting rod, and a through hole is provided inside the fixing plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. Through the cleaning mechanism, the impurities adhering to the outer surface of the drill rod that moves vertically repeatedly can be cleaned under the action of the elasticity of the compression spring, which can effectively reduce the impurities from entering the cylinder body and avoid the situation of pulling the cylinder;

[0017] 2. Through the provided filtering mechanism, the fixed block can be pushed to move during the extension of the reset spring, thereby sealing the through hole to prevent leakage of internal gas, making it easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is the overall structural view of the utility model;

[0020] Figure 2 It is a schematic diagram of a half-section structure of the cleaning element of the utility model;

[0021] Figure 3 For the utility model Figure 2 A magnified view of middle;

[0022] Figure 4 It is a schematic diagram of the half-section structure of the dustproof tube of the utility model.

[0023] Description of reference numerals:

[0024] 1. Hammer frame; 2. Fixed bearing; 3. Fixed bolt; 4. Accumulator; 5. Hydraulic cylinder; 6. Drill rod; 7. Cleaning piece; 71. Mounting tube; 72. Compression spring; 73. Movable rod; 74. Mounting plate; 75. Cleaning brush; 8. Dustproof tube; 81. Dustproof piece; 82. Dustproof net; 83. Fixed plate; 84. Connecting rod; 85. Fixed block; 86. Reset spring; 87. Current limiting plate; 88. Through hole. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The utility model provides a technical solution:

[0027] See also Figures 1 to 4 A hydraulic-gas combined breaker with an air intake valve dustproof structure comprises a breaker frame 1, an accumulator 4 is fixed inside the breaker frame 1, a hydraulic cylinder 5 is connected to the lower end of the accumulator 4, a drill rod 6 is fixed to the telescopic end of the hydraulic cylinder 5, a cleaning mechanism for cleaning the breaker rod is provided at the lower end of the breaker frame 1, and a filtering mechanism for filtering air is installed on one side of the accumulator 4;

[0028] The cleaning mechanism includes a cleaning member 7, which is fixed at the lower end of the inside of the breaker frame 1. Mounting tubes 71 are fixed at both ends of the cleaning member 7. A compression spring 72 is installed inside the mounting tube 71. The end of the compression spring 72 is abutted and connected with a movable rod 73. The end of the movable rod 73 passes through the cleaning member 7 and is fixed with a mounting plate 74. A cleaning brush 75 is fixed to the inner wall of the mounting plate 74. Two sets of fixed bearings 2 are fixed at one end of the breaker frame 1, and a fixing bolt 3 is installed on the outer wall of the breaker frame 1.

[0029] By adopting the above technical scheme, before using the liquid-gas combined breaker hammer with the air intake valve dustproof structure, the breaker hammer frame 1 is first connected to the external driving device, and the fixed bearing 2 is arranged to facilitate the connection and rotation of the breaker hammer frame 1, and the fixing bolt 3 can ensure the strength of the breaker hammer frame 1. When in use, the hydraulic cylinder 5 drives the drill rod 6 to move vertically repeatedly to break the object, and the accumulator 4 arranged can increase the impact force of the drill rod 6. Through the mounting tube 71 arranged on the cleaning part 7, under the action of the elasticity of the compression spring 72 itself, the movable rod 73 can be driven to move horizontally, so that the mounting plate 74 drives the cleaning brush 75 to contact the outer surface of the drill rod 6, and then the impurities adhered to the outer surface of the drill rod 6 that moves vertically repeatedly are cleaned, which can effectively reduce the impurities and then enter the cylinder body to avoid the situation of pulling the cylinder.

[0030] Specifically, Figure 1-Figure 4 As shown, the filtering mechanism includes a dustproof tube 8, which is installed on the outer surface of the accumulator 4. The end of the dustproof tube 8 is threadedly connected with a dustproof part 81, and a dustproof net 82 is fixed inside the dustproof part 81. A fixing plate 83 is fixed inside the dustproof tube 8, and a connecting rod 84 passes through the fixing plate 83. A fixing block 85 is fixed at one end of the connecting rod 84. A return spring 86 that is abutted and connected to the fixing block 85 is sleeved on the outer surface of the connecting rod 84, and one end of the return spring 86 is abutted and connected to the fixing plate 83. A limiting plate 87 is fixed to the other end of the connecting rod 84, and a through hole 88 is opened inside the fixing plate 83.

[0031] By adopting the above technical solution, the dustproof part 81 arranged on the dustproof tube 8 can play a dustproof role in cooperation with the dustproof net 82, thereby preventing dust from entering the interior. When air is taken in, the external gas will push the flow limiting plate 87 to move through the through hole 88 on the fixed plate 83, so that the gas enters the interior through the gap between the flow limiting plate 87 and the dustproof tube 8. After the air intake is completed, during the process of the reset spring 86 extending itself, it pushes the fixed block 85 to move, so that the connecting rod 84 drives the flow limiting plate 87 to reset, and the through hole 88 is sealed to prevent the internal gas from leaking, which is convenient for use.

[0032] Working principle: the hydraulic cylinder 5 drives the drill rod 6 to move vertically repeatedly to break the object, and the accumulator 4 provided can increase the impact force of the drill rod 6. The mounting tube 71 provided on the cleaning member 7 drives the movable rod 73 to move horizontally under the action of the elasticity of the compression spring 72 itself, so that the cleaning brush 75 contacts the outer surface of the drill rod 6 to clean the impurities adhered to the outer surface of the drill rod 6 that moves vertically repeatedly. The dustproof member 81 provided on the dustproof tube 8 can play a dustproof role with the cooperation of the dustproof net 82, thereby preventing dust from entering the interior. During air intake, the external gas will push the flow limiting plate 87 to move through the through hole 88 on the fixed plate 83, so that the gas enters the interior through the gap between the flow limiting plate 87 and the dustproof tube 8. After the air intake is completed, during the process of the reset spring 86 extending itself, the fixed block 85 is pushed to move, so that the connecting rod 84 drives the flow limiting plate 87 to reset and seal the through hole 88.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A hydraulic-gas combined breaker with an air intake valve dustproof structure, comprising a breaker frame (1), characterized in that: An accumulator (4) is fixed inside the breaker hammer frame (1), a hydraulic cylinder (5) is connected to the lower end of the accumulator (4), a drill rod (6) is fixed to the telescopic end of the hydraulic cylinder (5), a cleaning mechanism for cleaning the breaker rod is provided at the lower end of the breaker hammer frame (1), and a filtering mechanism for filtering air is installed on one side of the accumulator (4); The cleaning mechanism comprises a cleaning member (7), wherein the cleaning member (7) is fixed to the lower end inside the breaker hammer frame (1), and mounting tubes (71) are fixed to both ends of the cleaning member (7), a compression spring (72) is installed inside the mounting tube (71), and the end of the compression spring (72) is abutted and connected with a movable rod (73), and the end of the movable rod (73) passes through the cleaning member (7) and is fixed with a mounting plate (74), and a cleaning brush (75) is fixed to the inner wall of the mounting plate (74).

2. A hydraulic-gas combined breaker with an air intake valve dustproof structure according to claim 1, characterized in that: Two sets of fixed bearings (2) are fixed to one end of the breaker hammer frame (1), and fixing bolts (3) are installed on the outer wall of the breaker hammer frame (1).

3. The hydraulic-gas combined breaker with an air intake valve dustproof structure according to claim 1, characterized in that: The filtering mechanism comprises a dustproof pipe (8), the dustproof pipe (8) being mounted on the outer surface of the accumulator (4), the end of the dustproof pipe (8) being threadedly connected to a dustproof piece (81), and a dustproof net (82) being fixed inside the dustproof piece (81).

4. A hydraulic-gas combined breaker with an air intake valve dustproof structure according to claim 3, characterized in that: A fixing plate (83) is fixed inside the dustproof tube (8), and a connecting rod (84) passes through the inside of the fixing plate (83).

5. The hydraulic-gas combined breaker with an air intake valve dustproof structure according to claim 4, characterized in that: A fixing block (85) is fixed to one end of the connecting rod (84).

6. A hydraulic-gas combined breaker with an air intake valve dustproof structure according to claim 5, characterized in that: The outer surface of the connecting rod (84) is sleeved with a return spring (86) that is abutted against the fixing block (85), and one end of the return spring (86) is abutted against the fixing plate (83).

7. The hydraulic-gas combined breaker with an air intake valve dustproof structure according to claim 6, characterized in that: A flow limiting plate (87) is fixed to the other end of the connecting rod (84), and a through hole (88) is provided inside the fixing plate (83).

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