阅读说明：本技术 一种液压破碎锤上调频阀 (Frequency modulation valve on hydraulic breaking hammer ) 是由 张春生 于 2020-12-28 设计创作，主要内容包括：本发明公开了一种液压破碎锤上调频阀,涉及液压破碎锤技术领域,其技术方案要点是包括阀盖,阀盖的底部设有阀杆,阀盖的下方设有阀体,阀杆的底部延伸进阀体的内部,阀体的左右两端分别设有进液口和出液口,阀体的内部设有固定筒,固定筒的底部固定连接有内部为空心结构的底座,固定筒的外围开设有液体口,效果是通过当阀杆向下运动至最低点时,阀杆的外侧壁恰好与固定筒位于液体口底部的内腔贴合,此时的液体口被封住,随着阀杆慢慢向上运动的过程中,阀体内部油液通过的量越来越多,调频阀在使用的过程中,油液直接对连接杆的底部进行冲击,不对阀杆自身造成损坏,故该调频阀无论用多久,都不会影响该调频阀的密封性。(The invention discloses a frequency modulation valve on a hydraulic breaking hammer, which relates to the technical field of hydraulic breaking hammers and has the technical scheme that the frequency modulation valve comprises a valve cover, wherein a valve rod is arranged at the bottom of the valve cover, a valve body is arranged below the valve cover, the bottom of the valve rod extends into the valve body, a liquid inlet and a liquid outlet are respectively arranged at the left end and the right end of the valve body, a fixed cylinder is arranged in the valve body, the bottom of the fixed cylinder is fixedly connected with a base with a hollow structure, and the periphery of the fixed cylinder is provided with a liquid port. Therefore, the sealing performance of the frequency modulation valve can not be influenced no matter how long the frequency modulation valve is used.)

1. The utility model provides a frequency modulation valve on hydraulic pressure quartering hammer, includes valve gap (8), characterized by: the bottom of the valve cover (8) is provided with a valve rod (5), the lower part of the valve cover (8) is provided with a valve body (1), the bottom of the valve rod (5) extends into the inside of the valve body (1), the left end and the right end of the valve body (1) are respectively provided with a liquid inlet (9) and a liquid outlet (2), the inside of the valve body (1) is provided with a fixed cylinder (16), the bottom of the fixed cylinder (16) is fixedly connected with a base (13) which is internally provided with a hollow structure, the periphery of the fixed cylinder (16) is provided with a liquid port (15), the outer side wall of the valve rod (5) is just attached to the inner cavity of the fixed cylinder (16) at the bottom of the liquid port (15), the inside of the valve body (1) is provided with empty grooves (14) which are positioned at two sides of the base (13), wherein one side of the empty grooves (14) are communicated with the liquid, when the valve rod (5) is positioned at the lowest point, the empty grooves (14) on the two sides are blocked.

2. The hydraulic hammer up-rate valve of claim 1, wherein: an elastic piece is arranged inside the valve cover (8), and the bottom of the elastic piece is in contact with the valve rod (5).

3. The hydraulic hammer up-rate valve of claim 2, wherein: the elastic component includes spring (19), valve gap (8) comprises upper and lower two parts, and valve gap (8) about the equal fixedly connected with first connecting piece (7) in one side that two parts peripheries are relative, go up through bolted connection between fixed connection's first connecting piece (7) about valve gap (8) two parts, be located valve gap (8) lower part inner chamber's bottom has placed the top and has been the cylindricality section of thick bamboo (21) of open design, spring (19) are located cylindricality section of thick bamboo (21) and are located between valve gap (8) the first half, the bottom of cylindricality section of thick bamboo (21) contacts with the top of valve rod (5), and the latter half of valve gap (8) is passed to the bottom of valve rod (5).

4. A hydraulic hammer up-rate valve as claimed in claim 3, wherein: the bottom of the inner cavity of the cylindrical barrel (21) and the top of the upper half inner cavity of the valve cover (8) are fixedly connected with limit columns (17), the discs (18) are sleeved on the periphery of the limit columns (17) in a movable mode, the number of the discs (18) is two, protruding columns (20) are fixedly connected between the two opposite sides of the two discs (18), and the springs (19) are movably sleeved on the outer portions of the protruding columns (20).

5. The hydraulic hammer up-rate valve of claim 1, wherein: the bottom of valve gap (8) is equipped with installing frame (6), the bottom fixedly connected with connecting cylinder (4) of installing frame (6), the bottom and the valve body (1) of connecting cylinder (4) are connected, the bottom of valve rod (5) is run through installing frame (6) and connecting cylinder (4) respectively downwards.

6. The hydraulic hammer up-rate valve of claim 5, wherein: the valve is characterized in that one side, opposite to the valve body (1), of the connecting cylinder (4) is fixedly connected with a second connecting piece (3), and the second connecting piece (3) on one side, opposite to the valve body (1), of the connecting cylinder (4) is connected with the second connecting piece (3) through a bolt.

7. The hydraulic hammer up-rate valve of claim 1, wherein: the bottom fixedly connected with connecting rod (12) of valve rod (5), the diameter value of connecting rod (12) is less than the diameter value of valve rod (5), and connecting rod (12) can pass the inside hollow structure of base (13).

8. The hydraulic hammer up-rate valve of claim 1, wherein: valve rod (5) constitute for two parts, and connect through coupling assembling between the two parts of valve rod (5), coupling assembling is located the inside of connecting cylinder (4).

9. The hydraulic hammer up-rate valve of claim 8, wherein: coupling assembling is including changeing cover (11), the equal swing joint in upper and lower both ends of changeing cover (11) has thread bush (10), valve rod (5) two parts are just all offered the screw thread post with thread bush (10) internal thread looks adaptation to one side of thread bush (10).

Technical Field

The invention relates to the technical field of hydraulic breaking hammers, in particular to a frequency modulation valve on a hydraulic breaking hammer.

Background

The power source of the hydraulic breaking hammer is pressure provided by an excavator, a loader or a pump station, and the hydraulic breaking hammer can effectively break stones and rocks in engineering construction and improve the working efficiency.

The hydraulic breaking hammer is characterized in that the valve rod and the drill rod are arranged inside the hydraulic breaking hammer, the valve rod is pushed by oil flowing of the middle cylinder, the oil flow of the middle cylinder is controlled by the frequency modulation valve, when the oil flow is increased or reduced, the frequency of drill rod striking is correspondingly increased or reduced, the oil quantity of the existing frequency modulation valve is controlled by opening and closing a half-opened door, the frequency modulation valve is used for a long time, the door is easy to be impacted by the oil quantity to be worn in the opening and closing processes, the sealing performance of the frequency modulation valve is influenced, and therefore the frequency modulation valve of the type needs to be improved.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the upper frequency-adjusting valve of the hydraulic breaking hammer, which has good sealing performance.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a frequency modulation valve on hydraulic crushing hammer, includes the valve gap, the bottom of valve gap is equipped with the valve rod, the below of valve gap is equipped with the valve body, the bottom of valve rod extends into the inside of valve body, both ends are equipped with inlet and liquid outlet respectively about the valve body, the inside of valve body is equipped with solid fixed cylinder, the inside base that is hollow structure of bottom fixedly connected with of solid fixed cylinder, liquid mouth has been seted up to the periphery of solid fixed cylinder, the lateral wall of valve rod is located the inner chamber laminating of liquid mouth bottom with solid fixed cylinder just, the dead slot that is located the base both sides is seted up to the inside of valve body, one side of them dead slot and inlet intercommunication, opposite side dead slot and liquid outlet intercommunication work as when the valve rod is located the minimum, both sides the dead.

Preferably, the valve cap is internally provided with an elastic member, and the bottom of the elastic member is in contact with the valve rod.

Preferably, the elastic component includes the spring, the valve gap comprises upper and lower two parts, and the equal first connecting piece of fixedly connected with in the peripheral relative one side of two parts about the valve gap, through bolted connection between the first connecting piece of fixedly connected on two parts about the valve gap, be located the cylindrical barrel that the top was the opening design is placed to the bottom of part inner chamber under the valve gap, the spring is located cylindrical barrel and is located between the first half of valve gap, the bottom of cylindrical barrel contacts with the top of valve rod, and the latter half of valve gap is passed to the bottom of valve rod.

Preferably, the bottom of the inner cavity of the cylindrical barrel and the top of the upper half inner cavity of the valve cover are fixedly connected with limiting columns, two discs are movably sleeved on the periphery of the limiting columns, protruding columns are fixedly connected between the opposite sides of the two discs, and the springs are movably sleeved outside the protruding columns.

Preferably, the bottom of valve gap is equipped with the installing frame, the bottom fixedly connected with connecting cylinder of installing frame, the bottom and the valve body of connecting cylinder are connected, the bottom of valve rod is run through installing frame and connecting cylinder respectively downwards.

Preferably, the connecting cylinder and one side opposite to the valve body are fixedly connected with a second connecting sheet, and the connecting cylinder and the second connecting sheet on one side opposite to the valve body are connected through a bolt.

Preferably, the bottom fixedly connected with connecting rod of valve rod, the diameter value of connecting rod is less than the diameter value of valve rod, and the connecting rod can pass the inside hollow structure of base.

Preferably, the valve rod is composed of two parts, and the two parts of the valve rod are connected through a connecting assembly which is positioned inside the connecting cylinder.

Preferably, the connecting assembly comprises a rotating sleeve, the upper end and the lower end of the rotating sleeve are both movably connected with threaded sleeves, and threaded columns matched with threads inside the threaded sleeves are arranged on one sides, opposite to the threaded sleeves, of the two parts of the valve rod.

By adopting the technical scheme, the method has the advantages that,

1. through setting up the connecting rod, a fixed section of thick bamboo and liquid mouth, when valve rod downstream to the minimum, the lateral wall of valve rod is located the inner chamber laminating of liquid mouth bottom with a fixed section of thick bamboo just, the liquid mouth at this moment is sealed, the inside fluid of valve body is blocked, along with the in-process of the slow upward movement of valve rod, the quantity that the inside fluid of valve body passes through is more and more, the in-process of frequency modulation valve using, fluid is direct to strike the bottom of connecting rod, do not lead to the fact the damage to valve rod self, so this frequency modulation valve no matter how long with, can not influence the leakproofness of this frequency modulation valve.

2. Through setting up protruding post, protruding post plays the effect of injecing to the spring, guarantees that the spring is at the in-process of compression, and the top and the bottom of spring are located protruding post's outside always to guarantee that the spring keeps stable at the in-process of compression.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the internal structure of the valve body according to the embodiment of the present invention;

fig. 3 is a schematic view of the internal structure of the valve cover according to the embodiment of the present invention.

1. A valve body; 2. a liquid outlet; 3. a second connecting sheet; 4. a connecting cylinder; 5. a valve stem; 6. installing a frame; 7. a first connecting piece; 8. a valve cover; 9. a liquid inlet; 10. a threaded sleeve; 11. rotating the sleeve; 12. a connecting rod; 13. a base; 14. an empty groove; 15. a liquid port; 16. a fixed cylinder; 17. a limiting column; 18. a disc; 19. a spring; 20. a protruding post; 21. a cylindrical barrel.

Detailed Description

Embodiments of a hydraulic breaker up-frequency valve according to the present invention are further described with reference to fig. 1 to 3.

The utility model provides a frequency modulation valve on hydraulic pressure quartering hammer, see figure 1, including valve gap 8, valve gap 8's bottom is equipped with valve rod 5, valve gap 8's below is equipped with valve body 1, valve rod 5's bottom extends into valve body 1's inside, both ends are equipped with inlet 9 and liquid outlet 2 respectively about valve body 1, valve body 1's inside is equipped with solid fixed cylinder 16, the inside base 13 that is hollow structure of the bottom fixedly connected with of solid fixed cylinder 16, liquid mouth 15 has been seted up to solid fixed cylinder 16's periphery, the lateral wall of valve rod 5 just lies in the inner chamber laminating of liquid mouth 15 bottoms with solid fixed cylinder 16, dead slot 14 that lies in base 13 both sides is seted up to valve body 1's inside, wherein one side dead slot 14 and inlet 9 intercommunication, opposite side dead slot 14 and liquid outlet 2 intercommunication, when valve rod 5 is located. The oil liquid enters the valve body 1 from the liquid inlet 9 and flows out from the liquid outlet 2, the valve rod 5 moves up and down to control the feeding amount of the oil liquid, the valve rod 5 is connected with the driving part, the driving part is a hydraulic cylinder which controls the contraction and stretching of the valve rod 5, when the oil liquid needs to be completely blocked, the valve rod 5 is driven to move down to the lowest position, the outer side wall of the valve rod 5 is just attached to the inner cavity of the fixed cylinder 16 at the bottom of the liquid port 15, the joint between the valve rod 5 and the fixed cylinder 16 is in a sealing state, the valve rod 5 seals the liquid port 15, at the moment, the two empty grooves 14 are separated, when the valve rod 5 moves upwards, the larger the distance between the bottom of the valve rod 5 and the bottom of the liquid port 15 is, the feeding amount of the oil liquid is increased, if the valve rod 5 moves upwards to the highest position, the bottom of the valve rod 5 is coincided with the top of, the flow of fluid is the biggest, and fluid is blocked the in-process that slowly increases, and the frequency that the drill rod was hit is more and more high, and fluid is direct and valve rod 5's bottom contact, and valve rod 5's bottom is strikeed, but the in-process that fluid was blocked, as long as valve rod 5's side and the inner chamber laminating that fixed barrel 16 is located liquid mouth 15 bottoms can block fluid, so no matter how long for this frequency modulation valve is with, can not influence the leakproofness of this frequency modulation valve.

Referring to fig. 3, the valve cap 8 is provided inside with an elastic member, the bottom of which is in contact with the valve stem 5. When the driving piece only needs to drive the valve rod 5 to move upwards, and when the valve rod 5 is positioned at the highest position, the valve rod 5 is driven to move downwards due to the elastic action of the elastic piece, so that energy is saved.

Referring to fig. 1 and 3, the elastic member includes a spring 19, the valve cover 8 is composed of an upper part and a lower part, the first connecting piece 7 is fixedly connected to one side opposite to the periphery of the upper part and the lower part of the valve cover 8, the first connecting piece 7 is fixedly connected to the upper part and the lower part of the valve cover 8 through a bolt, a cylindrical barrel 21 with an open top is placed at the bottom of the inner cavity of the lower part of the valve cover 8, the spring 19 is located between the cylindrical barrel 21 and the upper part of the valve cover 8, the bottom of the cylindrical barrel 21 is in contact with the top of the valve rod 5, and the bottom of the valve rod 5 penetrates through the. When the valve stem 5 moves to the uppermost position, the valve stem 5 is driven to move downward due to the elastic action of the spring 19, thereby achieving the up-and-down reciprocating movement of the valve stem 5.

Referring to fig. 3, the bottom of the inner cavity of the cylindrical barrel 21 and the top of the inner cavity of the upper half part of the valve cover 8 are fixedly connected with a limiting column 17, two disks 18 are movably sleeved on the periphery of the limiting column 17, a protruding column 20 is fixedly connected between the opposite sides of the two disks 18, and a spring 19 is movably sleeved outside the protruding column 20. The limiting column 17 has a limiting effect on the disc 18 to ensure that the disc 18 can be kept stable, and the protruding column 20 has a limiting effect on the spring 19 to ensure that the spring 19 is kept stable in the compression process, so that the stable operation of the device is ensured.

See fig. 1, the bottom of valve gap 8 is equipped with installing frame 6, and the bottom fixedly connected with connecting cylinder 4 of installing frame 6, the bottom and the valve body 1 of connecting cylinder 4 are connected, and installing frame 6 and connecting cylinder 4 are run through respectively downwards in the bottom of valve rod 5.

Referring to fig. 1, the opposite sides of the connecting cylinder 4 and the valve body 1 are fixedly connected with second connecting pieces 3, and the connecting cylinder 4 and the second connecting pieces 3 on the opposite sides of the valve body 1 are connected through bolts. If the frequency modulation valve breaks down, set connecting cylinder 4 and valve body 1 into detachable form, the maintenance of the frequency modulation valve of being convenient for, and the leakproofness and the stability of this kind of connected mode are better.

Referring to fig. 1 and 2, a connecting rod 12 is fixedly connected to the bottom of the valve stem 5, the diameter of the connecting rod 12 is smaller than that of the valve stem 5, and the connecting rod 12 can pass through a hollow structure inside the base 13. Set up connecting rod 12 in the bottom of valve rod 5, when fluid at the in-process of motion, fluid is direct to be strikeed with the bottom of connecting rod 12, avoids valve rod 5's bottom to receive the damage to play the effect of protection to valve rod 5, connecting rod 12 can pass the inside hollow structure of base 13, guarantees that valve rod 5 downstream's in-process connecting rod 12 does not influence valve rod 5's operation.

The valve stem 5, see fig. 2, is made in two parts and the two parts of the valve stem 5 are connected by a connecting assembly, which is located inside the connecting cylinder 4. In the moving process of the valve rod 5, the valve rod 5 positioned in the connecting cylinder 4 is easy to break, so the valve rod 5 is arranged into two parts for connection, and the maintenance of the valve rod 5 is convenient.

See fig. 2, coupling assembling is including changeing cover 11, changes the equal swing joint in both ends have thread bush 10 about cover 11, and the screw thread post with thread bush 10 internal thread looks adaptation is all seted up to the one side that the thread bush 10 is just faced to valve rod 5 two parts. When the valve rod 5 needs to be connected with the rotary sleeve 11, the threaded sleeve 10 is rotated, the threaded sleeves 10 on the two sides of the rotary sleeve 11 are in threaded connection with one side, close to the threaded sleeve 10, of the valve rod 5, and then the valve rod 5 and the rotary sleeve 11 can be fixed firmly.

The working principle is as follows: firstly, oil is introduced into the valve body 1 from the liquid inlet 9, the oil is discharged from the liquid outlet 2, when the oil is not required to be discharged from the liquid outlet 2, the valve rod 5 is driven to move downwards to the lowest position, at the moment, the outer side wall of the valve rod 5 is just attached to the inner cavity of the fixed cylinder 16 positioned at the bottom of the liquid port 15, the joint between the valve rod 5 and the fixed cylinder 16 is in a sealing state, the outlet of the oil entering the liquid outlet 2 is sealed, the oil is blocked, in the upward movement process of the valve rod 5, the distance between the bottom of the valve rod 5 and the bottom of the liquid port 15 is gradually increased, the amount of the oil entering the liquid outlet 2 is increased, when the valve rod 5 moves upwards to the highest position, the bottom of the valve rod 5 is superposed with the top of the liquid port 15, the rising height of the valve rod 5 at the moment is the largest, the flow rate of the oil is the largest, in the process, however, in the process of blocking the oil, as long as the side surface of the valve rod 5 is attached to the inner cavity of the fixed cylinder 16 at the bottom of the liquid port 15, the oil can be blocked, so that the sealing performance of the frequency modulation valve cannot be affected no matter how long the frequency modulation valve is used.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.