CN114622741A - Hydraulic hammer with dustproof function - Google Patents

Hydraulic hammer with dustproof function Download PDF

Info

Publication number
CN114622741A
CN114622741A CN202011453902.2A CN202011453902A CN114622741A CN 114622741 A CN114622741 A CN 114622741A CN 202011453902 A CN202011453902 A CN 202011453902A CN 114622741 A CN114622741 A CN 114622741A
Authority
CN
China
Prior art keywords
seat
valve body
hydraulic hammer
drill rod
reversing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202011453902.2A
Other languages
Chinese (zh)
Inventor
温从字
李耀华
徐强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ma'anshan Shengfan Zhirong Information Technology Co ltd
Original Assignee
Ma'anshan Shengfan Zhirong Information Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ma'anshan Shengfan Zhirong Information Technology Co ltd filed Critical Ma'anshan Shengfan Zhirong Information Technology Co ltd
Priority to CN202011453902.2A priority Critical patent/CN114622741A/en
Publication of CN114622741A publication Critical patent/CN114622741A/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/08Wrecking of buildings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D47/00Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06Spray cleaning
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F5/00Dredgers or soil-shifting machines for special purposes
    • E02F5/30Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Electrochemistry (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Valves (AREA)
  • Pipe Accessories (AREA)

Abstract

The invention discloses a hydraulic hammer with a dustproof function, which comprises a hydraulic hammer drill rod, a mounting clamping plate, a hydraulic hammer side plate, an energy accumulator, a high-frequency reversing valve, a reversing valve body, a reversing hammer core, a drill rod mounting seat and a damping mounting seat, wherein the drill rod is connected with the hydraulic hammer drill rod through the mounting clamping plate; the drill rod of the hydraulic hammer is installed in the drill rod installation seat, the drill rod installation seat is connected with the reversing valve body, the reversing valve body and the drill rod installation seat are fixedly installed in the two hydraulic hammer side plates through bolts of the installation clamping plates, the reversing hammer core is installed in the reversing valve body, the energy accumulator and the high-frequency reversing valve are installed above the reversing valve body, the energy absorption assembly installation seat is installed at the top of the reversing valve body, and the energy absorption assembly installation seat, the drill rod installation seat and the reversing valve body are fixedly connected through the screw rod assembly. The invention has the advantages that: need not one set of water jet equipment of extra increase on hydraulic hammer's basis, practice thrift use cost, can play the cushioning effect to hydraulic hammer when solving hydraulic hammer raise dust problem.

Description

Hydraulic hammer with dustproof function
Technical Field
The invention relates to a hydraulic hammer, in particular to a hydraulic hammer with a dustproof function.
Background
The hydraulic breaking hammer is widely applied to the construction fields of metallurgy, mines, railways, highways, buildings and the like, can carry out operations such as mining, breaking, dismantling and the like on hard objects such as rocks, cement pavements, old buildings and the like, and can be used for specific operations such as riveting, derusting, vibrating, tamping, piling and the like by changing a drill rod. The hydraulic hammer is mainly used for dismantling and crushing engineering and the like during working, and cannot avoid generating a large amount of dust, for example, an integral hydraulic crushing hammer disclosed by CN201220228657.X cannot solve the problem of dust during working; in order to solve the raise dust problem, the CN201520909754.9 a building that prior art disclosed removes dust collector includes: the fixing system comprises a fixing disc, and the fixing disc is fixed on a hydraulic hammer of an excavator; the dust removal system comprises a dust removal water pipe and a spray head, wherein the dust removal water pipe is fixed on the fixed disc, and the spray head is arranged on the water pipe; the water supply system comprises a water tank, a pressure pump, a water supply pipe and an electronic control valve, wherein the water supply pipe is communicated with the dedusting water pipe, the pressure pump is communicated with the water supply pipe and the water tank, and the electronic control valve is arranged on the water supply pipe; and the control system is connected with the electronic control valve and the pressure pump in a control way. This technique has adopted pressure pump, electronic control valve, control system etc. additionally to increase one set of water jet equipment on hydraulic hammer's basis, great increase use cost can't play the cushioning effect to hydraulic hammer moreover.
Disclosure of Invention
Aiming at the defects of the existing product, the invention provides the hydraulic hammer with the dustproof function. The technical problem to be solved by the invention is as follows: the hydraulic hammer dust-raising problem is solved, and the hydraulic hammer can be damped to prolong the service life of the hydraulic hammer.
The invention relates to a hydraulic hammer with a dustproof function, which comprises a hydraulic hammer drill rod, a mounting clamping plate, a hydraulic hammer side plate, an energy accumulator, a high-frequency reversing valve, a reversing valve body, a reversing hammer core, a drill rod mounting seat and a damping mounting seat, wherein the drill rod is arranged on the hydraulic hammer drill rod; the hydraulic hammer drill rod is arranged in a drill rod mounting seat, the drill rod mounting seat is connected with a reversing valve body, the reversing valve body and the drill rod mounting seat are fixedly arranged in two hydraulic hammer side plates through bolts of mounting clamping plates, a reversing hammer core is arranged in the reversing valve body, an energy accumulator and a high-frequency reversing valve are arranged above the reversing valve body, an energy-absorbing assembly mounting seat is arranged at the top of the reversing valve body, and the energy-absorbing assembly mounting seat, the drill rod mounting seat and the reversing valve body are fixedly connected through a screw assembly;
the end of the reversing hammer core is provided with an energy absorption assembly, the energy absorption assembly is provided with a transducer, the transducer is connected with a sprinkling seat through a water outlet pipe, and the sprinkling seat is fixedly arranged on the drill rod mounting seat.
Further, the energy absorption assembly comprises a damping base, a damping rod, a spring, a damping cylinder, a spring adjusting seat, an inflation valve, a connecting pipe and a damping top seat; the energy absorption assembly comprises a damping cylinder body, a reversing hammer core, a spring adjusting seat, a spring, an energy absorption assembly mounting seat, a connecting pipe, an inflation valve, a reversing hammer core, a reversing hammer, a spring adjusting seat, a spring, a damping top seat, an energy absorption assembly mounting seat, an inflation valve, a connecting pipe and a connecting pipe, wherein the damping base is fixedly connected with the top end of the reversing hammer core; the connecting pipe is communicated with the energy converter.
Furthermore, the energy converter comprises a first shell, an elastic diaphragm plate, a second shell, a first liquid inlet valve and a second liquid outlet valve; the first shell and the second shell are in sealing fit through a bolt assembly, the elastic diaphragm plate is arranged in the middle of the first shell and the second shell, and the elastic diaphragm plate and the first shell form a first inner cavity; the second shell of the elastic diaphragm plate forms a second inner cavity, the first inner cavity is communicated with the connecting pipe, a port B of the second inner cavity is communicated with a water inlet pipeline through a first liquid inlet valve, the water inlet pipeline is communicated with the water storage tank, and a port C of the second inner cavity is communicated with a water outlet pipe through a second liquid outlet valve.
Further, the first liquid inlet valve and the second liquid outlet valve are identical in structure and comprise a valve body, a first guide seat, a sealing plate, a first step part, a second guide seat, a sealing shaft, a liquid inlet valve spring, an adjusting cam assembly and an adjusting handle; the adjustable sealing valve is characterized in that a first step part and a second step part are arranged on the inner wall of the valve body, the first step part is in contact and sealed connection with the sealing plate, the sealing plate is fixedly connected with the sealing shaft, a liquid inlet valve spring is arranged on the sealing plate, a first guide seat is arranged at the top of the liquid inlet valve spring, the first guide seat is clamped at the second step part, the top of the sealing shaft is inserted into the first guide seat, the lower end of the sealing shaft is inserted into the second guide seat, the second guide seat is fixedly connected with the inner wall of the valve body, an adjusting cam assembly is arranged above the first guide seat, the adjusting cam assembly comprises a cam part and a connecting rod, the cam part is fixedly installed on the connecting rod, the cam part is in contact connection with the first guide seat, the connecting rod penetrates through the valve body and is connected with an adjusting handle, and a locking nut is further arranged on the connecting rod outside the valve body.
The invention has the beneficial effects that: need not one set of water jet equipment of extra increase on hydraulic hammer's basis, practice thrift use cost, can play the cushioning effect to hydraulic hammer when solving hydraulic hammer raise dust problem, the energy-absorbing subassembly, the displacement vibration that absorbed hydraulic hammer such as rotary energy ware produced at the course of the work is strikeed, and change the gaseous volume change of shock attenuation barrel with vibration energy conversion, and then make hydraulic hammer can prevent the raise dust at its front end water spray at the during operation, can play the cushioning effect to hydraulic hammer when solving hydraulic hammer during operation raise dust problem, protect adapting unit, prolong its life.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a top view of the present invention.
Fig. 3 is a schematic connection diagram of the transducer of the present invention.
Fig. 4 is a schematic structural diagram of the energy converter of the present invention.
Fig. 5 is a schematic structural diagram of the first liquid inlet valve of the present invention.
Fig. 6 is a sectional view of a first inlet valve of the present invention.
Fig. 7 is a schematic view of the structure of the adjustment cam assembly of the present invention.
In the figure: the hydraulic hammer drill rod comprises a hydraulic hammer drill rod 1, a mounting clamping plate 2, a hydraulic hammer side plate 3, an energy accumulator 4, a high-frequency reversing valve 5, a reversing valve body 6, a reversing hammer core 7, a drill rod mounting seat 8 and a damping mounting seat 9;
the energy absorption device comprises an energy absorption assembly 100, a shock absorption base 101, a shock absorption rod 102, a spring 103, a shock absorption cylinder 104, a spring adjusting seat 105, an inflation valve 106, a connecting pipe 107, a shock absorption top seat 108, a switch 109, a sprinkling seat 110 and a water outlet pipe 111;
the energy converter comprises an energy converter 200, a first shell 201, an elastic diaphragm 202, a second shell 203, a first liquid inlet valve 204 and a second liquid outlet valve 205;
the valve comprises a valve body 241, a first guide seat 242, a sealing plate 243, a first step portion 244, a second guide seat 245, a sealing shaft 246, an inlet valve spring 247, an adjusting cam assembly 248, an adjusting handle 249 and a second step portion 250.
Detailed Description
The present invention will be further described with reference to the following examples.
The invention relates to a hydraulic hammer with a dustproof function, which mainly comprises a hydraulic hammer drill rod 1, a mounting clamping plate 2, a hydraulic hammer side plate 3, an energy accumulator 4, a high-frequency reversing valve 5, a reversing valve body 6, a reversing hammer core 7, a drill rod mounting seat 8 and a damping mounting seat 9;
the hydraulic hammer drill rod 1 is installed in a drill rod installation seat 8, the drill rod installation seat 8 is connected with a reversing valve body 6, the reversing valve body 6 and the drill rod installation seat 8 are fixedly installed in two hydraulic hammer side plates 3 through bolts of an installation clamping plate 2, a reversing hammer core 7 is installed in the reversing valve body 6, an energy accumulator 4 and a high-frequency reversing valve 5 are installed above the reversing valve body 6, an energy absorption assembly installation seat is installed at the top of the reversing valve body 6, and the energy absorption assembly installation seat, the drill rod installation seat 8 and the reversing valve body 6 are fixedly connected through a screw assembly;
the end part of the reversing hammer core 7 is provided with an energy absorption assembly 100, the energy absorption assembly 100 is provided with a transducer 200, the transducer 200 is connected with a sprinkling seat 110 through a water outlet pipe 111, and the sprinkling seat 110 is fixedly arranged on a drill rod mounting seat 8;
the energy absorption assembly 100 comprises a shock absorption base 101, a shock absorption rod 102, a spring 103, a shock absorption cylinder 104, a spring adjusting seat 105, an inflation valve 106, a connecting pipe 107 and a shock absorption top seat 108; the shock absorption assembly comprises a shock absorption base 101, a reversing hammer core 7, a spring adjusting seat 105, a spring 103, an energy absorption assembly mounting seat, a connecting pipe 107, a transducer 200, an inflation valve 106, an inflation valve 10 and a connecting pipe 107, wherein the shock absorption base 101 is fixedly connected with the top end of the reversing hammer core 7; the connection pipe 107 is communicated with the transducer 200.
The energy absorbing assembly 100 functions to absorb vibration generated during operation of the hydraulic hammer and convert the vibration energy into a change in the volume of the gas in the shock tube 104, thereby generating mechanical energy.
The spring adjusting seat 105 is used for adjusting the elastic variable of the spring 103, so as to adjust the change amplitude of the shock absorption rod 102 and simultaneously enable the shock absorption rod to be rapidly reset.
The function of the inflation valve 106 is to inflate gas into the shock tube 104 through the connector, sealing the entire chamber after the pressure is reached.
The energy converter 200 comprises a first shell 201, an elastic diaphragm 202, a second shell 203, a first liquid inlet valve 204 and a second liquid outlet valve 205; the first shell 201 and the second shell 203 are in sealing fit through a bolt assembly, the elastic diaphragm plate 202 is installed at the middle position of the first shell 201 and the second shell 203, and the elastic diaphragm plate 202 and the first shell 201 form a first inner cavity; the second shell 203 of the elastic diaphragm 202 forms a second inner cavity, the first inner cavity is communicated with the connecting pipe 107, a port B of the second inner cavity is communicated with a water inlet pipeline through a first liquid inlet valve 204, the water inlet pipeline is communicated with the water storage tank, and a port C of the second inner cavity is communicated with the water outlet pipe 111 through a second liquid outlet valve 205; the role of the transducer 200 is to vary the volume of the energy absorbing assembly 100 through the elastomeric diaphragm 202 to vary the volume of the second chamber and thereby draw or force fluid in.
The first liquid inlet valve 204 and the second liquid outlet valve 205 have the same structure, and comprise a valve body 241, a first guide seat 242, a sealing plate 243, a first step portion 244, a second guide seat 245, a sealing shaft 246, a liquid inlet valve spring 247, an adjusting cam assembly 248 and an adjusting handle 249; a first step 244 and a second step 250 are arranged on the inner wall of the valve body 241, the first step 244 is in contact sealing connection with a sealing plate 243, the sealing plate 243 is fixedly connected with a sealing shaft 246, a liquid inlet valve spring 247 is arranged on the sealing plate 243, a first guide seat 242 is arranged at the top of the liquid inlet valve spring 247, the first guide seat 242 is clamped at the second step 250, the top of the sealing shaft 246 is inserted into the first guide seat 242, the lower end of the sealing shaft 246 is inserted into the second guide seat 245, the second guide seat 245 is fixedly connected with the inner wall of the valve body 241, an adjusting cam assembly 248 is arranged above the first guide seat 242, the adjusting cam assembly 248 comprises a cam part and a connecting rod, the cam part is fixedly arranged on the connecting rod, the cam part is in contact connection with the first guide seat 242, the connecting rod penetrates through the valve body 241 and an adjusting handle 249, a locking nut is further arranged on the connecting rod outside the valve body 241, the adjusting handle 249 is used for adjusting the opening pressure value of the liquid inlet valve spring 247 and locking the liquid inlet valve spring.
When the hydraulic hammer drill rod device is used, the reversing hammer core 7 moves back and forth in the reversing valve body 6 to hit the hydraulic hammer drill rod 1 at the front end, the shock absorption rod 102 of the energy absorption assembly 100 moves along with the reversing hammer core 7 to generate displacement in the working process of the hydraulic hammer, so that gas in the shock absorption cylinder 104 generates repeated volume expansion and reduction changes, the elastic membrane plate 202 of the energy converter 200 can also generate vertical pumping along with the volume change of the shock absorption cylinder 104, the second liquid outlet valve 205 is closed when the elastic membrane plate 202 moves upwards, the first liquid inlet valve 204 is opened, and liquid is sucked into an inner cavity from a port B of the second inner cavity; when the elastic diaphragm 202 is compressed downwards, the first liquid inlet valve 204 is closed, the second liquid outlet valve 205 is pushed open, and the liquid in the second shell 203 is extruded out of the port C of the second inner cavity and enters the sprinkling base 110 through the water outlet pipe 111; the sprinkler head 110 sprays water to the front end when the hydraulic hammer is in operation to prevent dust from rising during operation, and the energy absorbing assembly 100 can absorb shock to the hydraulic hammer.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (4)

1. A hydraulic hammer with a dustproof function comprises a hydraulic hammer drill rod, a mounting clamping plate, a hydraulic hammer side plate, an energy accumulator, a high-frequency reversing valve, a reversing valve body, a reversing hammer core, a drill rod mounting seat and a damping mounting seat; the hydraulic hammer drill rod installation seat is characterized in that a drill rod installation seat of the hydraulic hammer is installed in a drill rod installation seat, the drill rod installation seat is connected with a reversing valve body, the reversing valve body and the drill rod installation seat are fixedly installed in two hydraulic hammer side plates through bolts of installation clamping plates, a reversing hammer core is installed in the reversing valve body, an energy accumulator and a high-frequency reversing valve are installed above the reversing valve body, an energy absorption assembly installation seat is installed at the top of the reversing valve body, and the energy absorption assembly installation seat, the drill rod installation seat and the reversing valve body are fixedly connected through a screw assembly;
the end of the reversing hammer core is provided with an energy absorption assembly, the energy absorption assembly is provided with a transducer, the transducer is connected with a sprinkling seat through a water outlet pipe, and the sprinkling seat is fixedly arranged on the drill rod mounting seat.
2. The hydraulic hammer with the dust-proof function as claimed in claim 1, wherein the energy-absorbing assembly comprises a shock absorption base, a shock absorption rod, a spring, a shock absorption cylinder body, a spring adjusting seat, an inflation valve, a connecting pipe and a shock absorption top seat; the energy-absorbing assembly is characterized in that the damping base is fixedly connected with the top end of the reversing hammer core, the damping base is fixedly connected with one end of the damping rod, the other end of the damping rod is movably and hermetically connected in the damping cylinder body, a threaded section is arranged on the outer side of the damping cylinder body, a spring adjusting seat is mounted on the threaded section, a spring is arranged between the spring adjusting seat and the damping base, the upper end of the damping cylinder body is fixedly connected with the upper end of the damping top seat, the damping top seat is fixedly connected with the top of an inner cavity of the energy-absorbing assembly mounting seat, the inner cavities of the damping cylinder bodies are connected in series through connecting pipes, the connecting pipes are connected with the energy converter, an inflation valve is mounted on the energy-absorbing assembly mounting seat, and the inflation valve is communicated with the connecting pipes; the connecting pipe is communicated with the energy converter.
3. The hydraulic hammer with the dustproof function of claim 1, wherein the energy converter comprises a first shell, an elastic diaphragm plate, a second shell, a first liquid inlet valve and a second liquid outlet valve; the first shell and the second shell are in sealing fit through a bolt assembly, the elastic diaphragm plate is arranged in the middle of the first shell and the second shell, and the elastic diaphragm plate and the first shell form a first inner cavity; the second shell of the elastic diaphragm plate forms a second inner cavity, the first inner cavity is communicated with the connecting pipe, a port B of the second inner cavity is communicated with a water inlet pipeline through a first liquid inlet valve, the water inlet pipeline is communicated with the water storage tank, and a port C of the second inner cavity is communicated with a water outlet pipe through a second liquid outlet valve.
4. The hydraulic hammer with the dustproof function of claim 3, wherein the first liquid inlet valve and the second liquid outlet valve are of the same structure and comprise a valve body, a first guide seat, a sealing plate, a first step part, a second guide seat, a sealing shaft, a liquid inlet valve spring, an adjusting cam assembly and an adjusting handle; the adjustable sealing valve is characterized in that a first step part and a second step part are arranged on the inner wall of the valve body, the first step part is in contact and sealed connection with the sealing plate, the sealing plate is fixedly connected with the sealing shaft, a liquid inlet valve spring is arranged on the sealing plate, a first guide seat is arranged at the top of the liquid inlet valve spring, the first guide seat is clamped at the second step part, the top of the sealing shaft is inserted into the first guide seat, the lower end of the sealing shaft is inserted into the second guide seat, the second guide seat is fixedly connected with the inner wall of the valve body, an adjusting cam assembly is arranged above the first guide seat, the adjusting cam assembly comprises a cam part and a connecting rod, the cam part is fixedly installed on the connecting rod, the cam part is in contact connection with the first guide seat, the connecting rod penetrates through the valve body and is connected with an adjusting handle, and a locking nut is further arranged on the connecting rod outside the valve body.
CN202011453902.2A 2020-12-12 2020-12-12 Hydraulic hammer with dustproof function Withdrawn CN114622741A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011453902.2A CN114622741A (en) 2020-12-12 2020-12-12 Hydraulic hammer with dustproof function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011453902.2A CN114622741A (en) 2020-12-12 2020-12-12 Hydraulic hammer with dustproof function

Publications (1)

Publication Number Publication Date
CN114622741A true CN114622741A (en) 2022-06-14

Family

ID=81895468

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011453902.2A Withdrawn CN114622741A (en) 2020-12-12 2020-12-12 Hydraulic hammer with dustproof function

Country Status (1)

Country Link
CN (1) CN114622741A (en)

Similar Documents

Publication Publication Date Title
CN114622613A (en) Multi-angle dust-reducing hydraulic stone breaking hammer
CN214467005U (en) Self-protection water hammer eliminator
CN210769641U (en) Novel buffering hydraulic cylinder
KR101924701B1 (en) Damping device for a percussion device, percussion device and rock drilling machine
CN202691432U (en) Piston-type water-hammer arrestor
CN210134471U (en) Hydraulic stone crushing equipment for road and bridge engineering
CN216642002U (en) Device for rapidly drilling hard rock
CN114622741A (en) Hydraulic hammer with dustproof function
EP1513986A1 (en) A device producing hammering
CN111173884A (en) Vibration suppression device of heading machine
CN114622742A (en) A broken manipulator of dustproof shock attenuation for demolising robot
CN215486552U (en) Fracturing pump valve box, fracturing pump and fracturing truck
CN210104738U (en) Novel hydraulic hammer for piling engineering
CN212506495U (en) Hydraulic breaking hammer with buffering structure
CN114618612A (en) Multistage damping dustproof fixed hydraulic crushing manipulator
CN2906023Y (en) Hydraulic lung-shape valve type jet impacter
CN208618480U (en) A kind of lesser hydraulic breaking hammer of noise
CN212271070U (en) Cylinder structure for hydraulic breaking hammer
KR20060113167A (en) An accumulator of hydraulic-hammer
CN201953306U (en) Hydraulic impactor with adjustable frequency for jumbolter
CN101655178A (en) Water hammer eliminator
CN206175556U (en) Mechanical engineering equips and uses damping device
KR200391032Y1 (en) An Accumulator of Hydraulic-Hammer
CN112575831B (en) Excavator shock attenuation connecting rod and excavator
CN217715539U (en) Vertical siphon type liquid storage device for refrigeration equipment

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20220614