CN105060137A - No-explosionproof valve lifting system of crawler crane - Google Patents

No-explosionproof valve lifting system of crawler crane Download PDF

Info

Publication number
CN105060137A
CN105060137A CN201510479519.7A CN201510479519A CN105060137A CN 105060137 A CN105060137 A CN 105060137A CN 201510479519 A CN201510479519 A CN 201510479519A CN 105060137 A CN105060137 A CN 105060137A
Authority
CN
China
Prior art keywords
valve
pump
hydraulic motor
hydraulic
crawler crane
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.)
Granted
Application number
CN201510479519.7A
Other languages
Chinese (zh)
Other versions
CN105060137B (en
Inventor
任学清
韩志伟
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.)
Pinghu Golden Rabbit Industry Co ltd
Original Assignee
HENAN SANMA HOISTING MACHINERY 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 HENAN SANMA HOISTING MACHINERY CO Ltd filed Critical HENAN SANMA HOISTING MACHINERY CO Ltd
Priority to CN201510479519.7A priority Critical patent/CN105060137B/en
Publication of CN105060137A publication Critical patent/CN105060137A/en
Application granted granted Critical
Publication of CN105060137B publication Critical patent/CN105060137B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/36Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B66C23/38Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes with separate prime movers for crane and vehicle

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

The invention relates to a no-explosionproof valve lifting system of a crawler crane. The lifting system comprises a two-way variable pump, an oil replenishing pump and a hydraulic motor, wherein a main body of the lifting system consists of a closed loop hydraulic system, a lifting frame, an oil replenishing system, a radiating system and a control system; a main body of the closed loop hydraulic system consists of an engine, a two-way variable pump, a hydraulic motor and a detecting system; a main body of the lifting frame consists of a truss mechanism, a speed reducer, a windlass mechanism, a steel wire rope, a pulley set and a lifter; the two-way variable pump is connected with a main pump displacement control valve, an oil replenishing pump, a hydraulic motor, a buffer valve, an oil replenishing overflow valve and an overflow valve A; the oil replenishing pump is connected with a hydraulic oil filter and a brake opening electric control reversing valve; the hydraulic motor is connected with a brake; and the brake opening electric control reversing valve is connected with the buffer valve and the oil replenishing overflow valve. The lifting system has the advantages of performance reliability, safety, lifting smoothness, energy conservation and convenience for operation.

Description

A kind of crawler crane is without the hoisting system of explosion relief valve
Technical field
The invention belongs to hoisting crane technical field, be specifically related to the hoisting system of a kind of crawler crane without explosion relief valve.
Background technology
Hoisting crane is as the elevator machinery in current commercial production, the stability of its hoisting system and safety are particularly important, in hoisting system, the problem larger to safety effects is the anti-fall problem that hoists and the stability problem that hoists under hard service, for solving the problem, therefore need a kind of crawler crane without the hoisting system of explosion relief valve.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, and a kind of dependable performance is provided, safely, hoist the hoisting system of steady, energy-conservation, easy to operate crawler crane without explosion relief valve.
The object of the present invention is achieved like this: a kind of crawler crane is without the hoisting system of explosion relief valve, it comprises two way variable displacement pump, slippage pump, HM Hydraulic Motor, the main body of described hoisting system is made up of closed-loop hydraulic system, elevator platform, oil-supplementing system, cooling system, control system, and the main body of described closed-loop hydraulic system is made up of driving engine, two way variable displacement pump, HM Hydraulic Motor, checking system; The main body of described elevator platform is made up of truss mechanism, reductor, hoisting mechanism, steel rope, assembly pulley, suspender; Described two way variable displacement pump is connected with discharge of main pump control cock, slippage pump, HM Hydraulic Motor, cushion valve, repairing by pass valve, by pass valve A, described slippage pump is connected with hydraulic oil filter, drg opens electric control reversing valve, described HM Hydraulic Motor is connected with drg, and described drg is opened electric control reversing valve and is connected with cushion valve, repairing by pass valve.
Described HM Hydraulic Motor is 2.
2 described HM Hydraulic Motor are fixed together.
The repairing delivery port of described slippage pump is provided with check valve.
The repairing delivery port of described slippage pump is connected with hydraulic oil filter.
Described discharge of main pump control cock is electric proportional control valve.
Described drg is plate disc brake.
Beneficial effect of the present invention: the present invention adopts two way variable displacement pump, discharge of main pump control cock, cushion valve, repairing by pass valve, by pass valve A, hydraulic oil filter, slippage pump, drg unlatching electric control reversing valve, HM Hydraulic Motor, drg to form the hoisting system of a kind of crawler crane without explosion relief valve, has dependable performance, safely, hoist steady, energy-conservation, easy to operate advantage; The closed-loop hydraulic system of setting of the present invention is made up of driving engine, two way variable displacement pump, HM Hydraulic Motor, checking system, has that easy to operate, structure is simple, hoist pulsation-free advantage; Drg of the present invention is plate disc brake, its compact mechanical structure, and weight is little, retro-speed is fast, rapid heat dissipation, and in the situation that load is larger, braking effect is stablized, and improves the performance of hoisting system; The present invention to hoist operating mode in load, because weight is in the process of hoisting, speed is comparatively steady, and not excessive compression shock or vibration, in this process, the size that operator can promote angle by control handle controls the control electric signal of discharge of main pump control cock, and then control discharge of main pump, control the flow of hoisting system, also just control motor rotary speed and load lifting velocity, the two way variable displacement pump that the present invention is arranged, the load meeting hoisting system hoists demand; The present invention is in the temporary transient static operating mode of load, this operating mode will inevitably frequently occur in hoisting process, because the process of lifting can not ensure once success, constantly adjustment just must can reach the requirement of engineering construction, hoisting system does not provide power, weight is still in the air, this is required to drg is reliable, therefore adopts plate disc brake to meet the requirement that hoists of system; The present invention is in load secondary lifting operating mode, load becomes motion from static, its moment produced directly is born by hydraulic efficiency pressure system after drg starts, main pump can not meet the demands at the pressure provided instantaneously and flow, so load will be reversed by motor in tow, is macroscopically just showing as weight downslide out of control; And if the pressure that main pump provides and flow exceed requirement, but drg is not opened in time, hypervelocity and the fluctuation of pressure of HM Hydraulic Motor will be caused in the moment that drg is opened, macroscopically showing as weight vibration, hoisting system instability is subject to, slippage pump, two way variable displacement pump that the present invention is arranged, meet the load secondary lifting demand of hoisting system; The present invention, in overload operation assault phase, opens electric control reversing valve by drg, in the stage of overload operation, supplements oil mass in time and brakes, having the advantage that efficiency is high, structure is simple, effective; Total, the present invention has dependable performance, safely, hoist steady, energy-conservation, easy to operate advantage.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of crawler crane of the present invention without the hoisting system of explosion relief valve.
In figure: 1, two way variable displacement pump 2, discharge of main pump control cock 3, cushion valve 4, repairing by pass valve 5, by pass valve A6, hydraulic oil filter 7, slippage pump 8, drg open electric control reversing valve 9, HM Hydraulic Motor 10, drg.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described further.
Embodiment 1
As shown in Figure 1, a kind of crawler crane is without the hoisting system of explosion relief valve, it comprises two way variable displacement pump 1, slippage pump 7, HM Hydraulic Motor 9, the main body of described hoisting system is made up of closed-loop hydraulic system, elevator platform, oil-supplementing system, cooling system, control system, and the main body of described closed-loop hydraulic system is made up of driving engine, two way variable displacement pump 1, HM Hydraulic Motor 9, checking system; The main body of described elevator platform is made up of truss mechanism, reductor, hoisting mechanism, steel rope, assembly pulley, suspender; Described two way variable displacement pump 1 is connected with discharge of main pump control cock 2, slippage pump 7, HM Hydraulic Motor 9, cushion valve 3, repairing by pass valve 4, by pass valve A5, described slippage pump 7 is connected with hydraulic oil filter 6, drg opens electric control reversing valve 8, described HM Hydraulic Motor 9 is connected with drg 10, and described drg is opened electric control reversing valve 8 and is connected with cushion valve 3, repairing by pass valve 4.
During the invention process, first the main body of hoisting system is made up of closed-loop hydraulic system, elevator platform, oil-supplementing system, cooling system, control system, and the main body of closed-loop hydraulic system is made up of driving engine, two way variable displacement pump, HM Hydraulic Motor, checking system; The main body of elevator platform is made up of truss mechanism, reductor, hoisting mechanism, steel rope, assembly pulley, suspender; Two way variable displacement pump is connected discharge of main pump control cock, slippage pump, HM Hydraulic Motor, cushion valve, repairing by pass valve, by pass valve A, slippage pump is connected hydraulic oil filter, drg opens electric control reversing valve, HM Hydraulic Motor connecting brake, drg is opened electric control reversing valve and connects cushion valve, repairing by pass valve; Can place in operation of the present invention after completing above-mentioned installation, two way variable displacement pump is by driven by engine, for hoisting system provides pressure and flow, drive HM Hydraulic Motor, through reductor, elevator and steel rope, final transmission of power is to weight, the controllable capacity pump of closed system drives two HM Hydraulic Motor, and these two HM Hydraulic Motor force to be consolidated by physical construction, and rotating speed is identical, and the hoisting system of complete machine is made up of 4 groups of closed systems, jointly complete hoisting system task; Total, the present invention has dependable performance, safely, hoist steady, energy-conservation, easy to operate advantage.
Embodiment 2
As shown in Figure 1, a kind of crawler crane is without the hoisting system of explosion relief valve, it comprises two way variable displacement pump 1, slippage pump 7, HM Hydraulic Motor 9, the main body of described hoisting system is made up of closed-loop hydraulic system, elevator platform, oil-supplementing system, cooling system, control system, and the main body of described closed-loop hydraulic system is made up of driving engine, two way variable displacement pump 1, HM Hydraulic Motor 9, checking system; The main body of described elevator platform is made up of truss mechanism, reductor, hoisting mechanism, steel rope, assembly pulley, suspender; Described two way variable displacement pump 1 is connected with discharge of main pump control cock 2, slippage pump 7, HM Hydraulic Motor 9, cushion valve 3, repairing by pass valve 4, by pass valve A5, described slippage pump 7 is connected with hydraulic oil filter 6, drg opens electric control reversing valve 8, described HM Hydraulic Motor 9 is connected with drg 10, and described drg is opened electric control reversing valve 8 and is connected with cushion valve 3, repairing by pass valve 4.
Described HM Hydraulic Motor 9 is 2.
2 described HM Hydraulic Motor 9 are fixed together.
The repairing delivery port of described slippage pump 7 is provided with check valve.
The repairing delivery port of described slippage pump 7 is connected with hydraulic oil filter 6.
Described discharge of main pump control cock 2 is electric proportional control valve.
Described drg 10 is plate disc brake.
During the invention process, first the main body of hoisting system is made up of closed-loop hydraulic system, elevator platform, oil-supplementing system, cooling system, control system, and the main body of closed-loop hydraulic system is made up of driving engine, two way variable displacement pump, HM Hydraulic Motor, checking system; The main body of elevator platform is made up of truss mechanism, reductor, hoisting mechanism, steel rope, assembly pulley, suspender; Two way variable displacement pump is connected discharge of main pump control cock, slippage pump, HM Hydraulic Motor, cushion valve, repairing by pass valve, by pass valve A, slippage pump is connected hydraulic oil filter, drg opens electric control reversing valve, HM Hydraulic Motor connecting brake, drg is opened electric control reversing valve and connects cushion valve, repairing by pass valve; Can place in operation of the present invention after completing above-mentioned installation, two way variable displacement pump is by driven by engine, for hoisting system provides pressure and flow, drive HM Hydraulic Motor, through reductor, elevator and steel rope, final transmission of power is to weight, the controllable capacity pump of closed system drives two HM Hydraulic Motor, and these two HM Hydraulic Motor force to be consolidated by physical construction, and rotating speed is identical, and the hoisting system of complete machine is made up of 4 groups of closed systems, jointly complete hoisting system task; HM Hydraulic Motor of the present invention is 2, and 2 HM Hydraulic Motor are fixed together, and has stable, the connection failure-free advantage that hoists; The repairing delivery port of slippage pump of the present invention is provided with check valve, and the repairing delivery port of slippage pump is connected with hydraulic oil filter, has the advantage that repairing is reliable, stable, efficiency is high; Discharge of main pump control cock of the present invention is electric proportional control valve, and drg is plate disc brake, has the advantage that braking is reliable, structure is simple, cost is low; Total, the present invention has dependable performance, safely, hoist steady, energy-conservation, easy to operate advantage.
The foregoing is only preferred embodiment of the present invention, protection scope of the present invention is not limited thereto, and anyly all belongs within scope based on the equivalent transformation in technical solution of the present invention.

Claims (7)

1. a crawler crane is without the hoisting system of explosion relief valve, it comprises two way variable displacement pump, slippage pump, HM Hydraulic Motor, it is characterized in that: the main body of described hoisting system is made up of closed-loop hydraulic system, elevator platform, oil-supplementing system, cooling system, control system, the main body of described closed-loop hydraulic system is made up of driving engine, two way variable displacement pump, HM Hydraulic Motor, checking system; The main body of described elevator platform is made up of truss mechanism, reductor, hoisting mechanism, steel rope, assembly pulley, suspender; Described two way variable displacement pump is connected with discharge of main pump control cock, slippage pump, HM Hydraulic Motor, cushion valve, repairing by pass valve, by pass valve A, described slippage pump is connected with hydraulic oil filter, drg opens electric control reversing valve, described HM Hydraulic Motor is connected with drg, and described drg is opened electric control reversing valve and is connected with cushion valve, repairing by pass valve.
2. a kind of crawler crane as claimed in claim 1 is without the hoisting system of explosion relief valve, it is characterized in that: described HM Hydraulic Motor is 2.
3. a kind of crawler crane as claimed in claim 2 is without the hoisting system of explosion relief valve, it is characterized in that: 2 described HM Hydraulic Motor are fixed together.
4. a kind of crawler crane as claimed in claim 1 is without the hoisting system of explosion relief valve, it is characterized in that: the repairing delivery port of described slippage pump is provided with check valve.
5. a kind of crawler crane as claimed in claim 1 is without the hoisting system of explosion relief valve, it is characterized in that: the repairing delivery port of described slippage pump is connected with hydraulic oil filter.
6. a kind of crawler crane as claimed in claim 1 is without the hoisting system of explosion relief valve, it is characterized in that: described discharge of main pump control cock is electric proportional control valve.
7. a kind of crawler crane as claimed in claim 1 is without the hoisting system of explosion relief valve, it is characterized in that: described drg is plate disc brake.
CN201510479519.7A 2015-08-03 2015-08-03 A kind of hoisting system of crawler crane without explosion-proof valve Active CN105060137B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510479519.7A CN105060137B (en) 2015-08-03 2015-08-03 A kind of hoisting system of crawler crane without explosion-proof valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510479519.7A CN105060137B (en) 2015-08-03 2015-08-03 A kind of hoisting system of crawler crane without explosion-proof valve

Publications (2)

Publication Number Publication Date
CN105060137A true CN105060137A (en) 2015-11-18
CN105060137B CN105060137B (en) 2017-12-12

Family

ID=54489731

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510479519.7A Active CN105060137B (en) 2015-08-03 2015-08-03 A kind of hoisting system of crawler crane without explosion-proof valve

Country Status (1)

Country Link
CN (1) CN105060137B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107237787A (en) * 2017-04-27 2017-10-10 郑州容大科技股份有限公司 A kind of tobacco harvesting machine of use Closed Hydraulic Driving system
CN116460372A (en) * 2023-06-19 2023-07-21 莱芜泰山煤矿机械有限公司 Cooling structure for gear hobbing machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201942438U (en) * 2011-01-17 2011-08-24 徐州重型机械有限公司 Crane and closed type hydraulic system thereof
CN202657851U (en) * 2012-03-12 2013-01-09 辽宁抚挖重工机械股份有限公司 Mast lifting follow-up control device
JP2014055608A (en) * 2012-09-11 2014-03-27 Hitachi Sumitomo Heavy Industries Construction Crane Co Ltd Hydraulic circuit of construction machine and crane
CN203602273U (en) * 2013-10-09 2014-05-21 中联重科股份有限公司 Hydraulic control system for controlling lifting of luffing mast of crane and crane
CN204873620U (en) * 2015-08-03 2015-12-16 河南省三马起重机械有限公司 Caterpillar crane does not have rising of explosion -proof valve and rises system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201942438U (en) * 2011-01-17 2011-08-24 徐州重型机械有限公司 Crane and closed type hydraulic system thereof
CN202657851U (en) * 2012-03-12 2013-01-09 辽宁抚挖重工机械股份有限公司 Mast lifting follow-up control device
JP2014055608A (en) * 2012-09-11 2014-03-27 Hitachi Sumitomo Heavy Industries Construction Crane Co Ltd Hydraulic circuit of construction machine and crane
CN203602273U (en) * 2013-10-09 2014-05-21 中联重科股份有限公司 Hydraulic control system for controlling lifting of luffing mast of crane and crane
CN204873620U (en) * 2015-08-03 2015-12-16 河南省三马起重机械有限公司 Caterpillar crane does not have rising of explosion -proof valve and rises system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107237787A (en) * 2017-04-27 2017-10-10 郑州容大科技股份有限公司 A kind of tobacco harvesting machine of use Closed Hydraulic Driving system
CN116460372A (en) * 2023-06-19 2023-07-21 莱芜泰山煤矿机械有限公司 Cooling structure for gear hobbing machine
CN116460372B (en) * 2023-06-19 2023-09-05 莱芜泰山煤矿机械有限公司 Cooling structure for gear hobbing machine

Also Published As

Publication number Publication date
CN105060137B (en) 2017-12-12

Similar Documents

Publication Publication Date Title
CN100535454C (en) Energy-store state-liquid driving device of secondary flow-regulation coupling hydraulic energy accumulator
CN202280672U (en) Flywheel energy storage type hydraulic reversing system
CN103613021A (en) Winch hydraulic control system and engineering machinery
WO2013086882A1 (en) Crane, and closed-type hoist negative power control system for use with crane
CN204873620U (en) Caterpillar crane does not have rising of explosion -proof valve and rises system
CN207108329U (en) Rail-mounted gantry container crane lifting mechanism with emergency driving device
CN1657393A (en) Push and pull cylinder variable frequency energy-saving hydraulic elevator system of balancing load by accumulator loop
CN105060137A (en) No-explosionproof valve lifting system of crawler crane
CN212225830U (en) Hydraulic disc brake system of electric cylinder
CN104495586B (en) Pneumatic telescopic elevator
CN104865083A (en) Multi-rope friction hoist load simulation hydraulic loading device
CN206232360U (en) A kind of two-stage brake hydraulic station for distinguishing different loads operating mode
CN207361670U (en) A kind of mine hoist torque-controllable sure brake system
CN114873461B (en) Hydraulic control system for lifting beam of monorail crane and working method of hydraulic control system
CN204823828U (en) Caterpillar crane has explosion -proof valve to play to rise system
CN105819360A (en) Pneumatic hoist
CN204549917U (en) A kind of Electric Chain Blocks
CN101665208A (en) Counterweight driving traction device of machine room-less elevator
CN110921472A (en) Permanent-magnet direct-drive type mine hoist
CN102502414B (en) Overload and lift limiting valve of hose crane
CN202296941U (en) Hoisting hydraulic system for preventing dropping of secondary lifting loads
CN206328089U (en) Tower crane dead electricity rotary braking device
CN111237362B (en) Electric cylinder hydraulic disc brake system and brake method
CN200958021Y (en) Electric hoist with safety brake
CN201405861Y (en) Double-brake storage battery industrial and mining electric locomotive

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20170718

Address after: 510640 Guangdong City, Tianhe District Province, No. five, road, public education building, unit 371-1, unit 2401

Applicant after: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd.

Address before: 453400, Xinxiang County, Henan province Changyuan Zhuang Industrial Park

Applicant before: HENAN SANMA CRANE Co.,Ltd.

CB03 Change of inventor or designer information

Inventor after: Zhang Qinghua

Inventor before: Ren Xueqing

Inventor before: Han Zhiwei

CB03 Change of inventor or designer information
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20170930

Address after: 362400 Fujian province Quanzhou city Anxi County Peach boat Township South pit village south head 33-2

Applicant after: Zhang Qinghua

Address before: 510640 Guangdong City, Tianhe District Province, No. five, road, public education building, unit 371-1, unit 2401

Applicant before: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd.

GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20191010

Address after: 362000 room 604, 2 stairs, building 41, Zhongxin garden, No. 147, Third Ring Road, Luocheng garden, Hui'an County, Fujian Province

Patentee after: Lin Shaozhong

Address before: 362400 Nan Keng No. 33-2, Nan Keng Village, Anxi County, Quanzhou City, Fujian

Patentee before: Zhang Qinghua

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20191223

Address after: Dushan Gang Zhen Xiao Ying tou Cun, Pinghu City, Jiaxing City, Zhejiang Province

Patentee after: Pinghu golden Rabbit Industry Co.,Ltd.

Address before: 362000 room 604, 2 stairs, building 41, Zhongxin garden, No. 147, Third Ring Road, Luocheng garden, Hui'an County, Fujian Province

Patentee before: Lin Shaozhong

TR01 Transfer of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: Lifting system without explosion-proof valve for crawler crane

Effective date of registration: 20211216

Granted publication date: 20171212

Pledgee: Zhejiang Pinghu Rural Commercial Bank Co.,Ltd. Huanggu sub branch

Pledgor: Pinghu golden Rabbit Industry Co.,Ltd.

Registration number: Y2021330002535

PE01 Entry into force of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20230606

Granted publication date: 20171212

Pledgee: Zhejiang Pinghu Rural Commercial Bank Co.,Ltd. Huanggu sub branch

Pledgor: Pinghu golden Rabbit Industry Co.,Ltd.

Registration number: Y2021330002535