CN205755554U - Combination type automatic calabash seed cropper - Google Patents

Combination type automatic calabash seed cropper Download PDF

Info

Publication number
CN205755554U
CN205755554U CN201620430485.2U CN201620430485U CN205755554U CN 205755554 U CN205755554 U CN 205755554U CN 201620430485 U CN201620430485 U CN 201620430485U CN 205755554 U CN205755554 U CN 205755554U
Authority
CN
China
Prior art keywords
unit
motor
threshing
stationary knife
combination type
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.)
Expired - Fee Related
Application number
CN201620430485.2U
Other languages
Chinese (zh)
Inventor
陈铁
达布
任剑波
王成都
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.)
BAOTOU HARVEST MECHANICAL & ELECTRICAL HYDRAULIC EQUIPMENT Co Ltd
Original Assignee
BAOTOU HARVEST MECHANICAL & ELECTRICAL HYDRAULIC EQUIPMENT 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 BAOTOU HARVEST MECHANICAL & ELECTRICAL HYDRAULIC EQUIPMENT Co Ltd filed Critical BAOTOU HARVEST MECHANICAL & ELECTRICAL HYDRAULIC EQUIPMENT Co Ltd
Priority to CN201620430485.2U priority Critical patent/CN205755554U/en
Application granted granted Critical
Publication of CN205755554U publication Critical patent/CN205755554U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Harvester Elements (AREA)

Abstract

The utility model discloses a kind of combination type automatic calabash seed cropper, it is included in tool car dead ahead rack-mounted to start unit, dynamic stationary knife unit, remove weeds unit, pickup unit, it is arranged on the control unit that the conveyer unit on the car body crossbeam of right side, threshing unit, fragmentation cell, the hydraulic power source unit being arranged on car body crossbeam and operator are indoor.It is characterized by: hydraulic power source unit controls to start motor by drive control valve group, roguing mare reaches, dynamic stationary knife motor, conveying motor, threshing motor, crusher motor operate, and drive respectively and start, dynamic stationary knife, go weeds, conveyer, broken, threshing cell operation.Compared with prior art, this utility model is separate unit fabricated structure, and driven separately, running speed are adjustable, band overload protection, has the features such as operating rate high, loading capacity is big, the suitability good, security performance is high, failure rate is low.

Description

Combination type automatic calabash seed cropper
Technical field
This utility model relates to agricultural machinery technological field, a kind of combination type automatic calabash seed cropper of design.
Background technology
The calabash seed cropper used on the market at present, most by the realization of tractor-drawn running gear walking and calabash automatically Reed melon is picked up and is taken seed work.It is primarily present problems with: one, poor practicability, work efficiency is relatively low.Show themselves in that flat-bottomed land is adopted Plucking can be properly functioning, can not run continuously to each part device of hilly country cropper.It is primarily due to pick-up mechanism, The power source of broken seed extractor structure and other devices all takes from tool car engine mission output shaft, and output shaft passes through tooth Wheel, belt, chain drive drive each mechanism branch transmission, and machinery branch driven Design is complicated, the drive path length of each mechanism, make Mechanical efficiency is low, fault rate is high, potential safety hazard is big for one-tenth.Two, complete machine does not have speed-regulating function, and each mechanism branch actuating device belongs to Definite proportion transmission, it is impossible to according to actual condition speed governing, reduces yield rate.Three, complete machine does not have overload protection function, easily causes chain Wheel, the another part of tooth axle damage, and the spare part process-cycle is long, and fault rate is high, affects optimal harvest time.It is therefore proposed that a kind of unit group Box-like structure, driven separately, running speed are adjustable, band overload pressure adjusting means, have that operating rate is high, loading capacity big, be suitable for The combination type automatic calabash seed cropper of the property feature such as good, security performance is high, failure rate is low.
Summary of the invention
The purpose of this utility model is to provide one, and layout is simple, moment of torsion is big, efficiency is high, security performance is high, the suitability is strong Combination type automatic calabash seed cropper, solve structure complexity that existing calabash seed cropper generally exists, poor stability, work Efficiency is on the low side, fault rate is high, and the problem that production cost is high.
This utility model include tool car select 30 loaders as power source and running gear, including starting unit, going Weeds unit, dynamic stationary knife unit, broken and threshing unit, including picking up and conveyer unit, including hydraulic power supply and control Unit.
Duplex hydraulic pump, duplex electro hydraulic reversal valve, flow speed control valve, overload pressure is included as improving described hydraulic power source unit Power relief valve, hydraulic motor.Tool car engine mission output shaft is coupled with duplex hydraulic pump by power takeoff, hydraulic pump by Pressure duct and corresponding duplex electro hydraulic reversal valve couple, go weeds, dynamic stationary knife, start, threshing and corresponding the driving of fragmentation cell Dynamic element roguing mare reaches, moves stationary knife motor, starts motor, conveying motor, threshing motor, crusher motor high-pressure hose with right Flow speed control valve, the overload pressure answered regulate valve, multiple directional control valve couples.
Above-mentioned duplex electro hydraulic reversal valve includes 3 roads or 6 road electro-hydraulic reversing valves.
Described control unit includes the most individually multi-channel control and the electronic key operation of push button, is furnished with scram button.
Described hydraulic power supply is fixed on tool car body crossbeam 1, and control unit is fixed on operator room, it is simple to Driving process is handled.
Described start unit, go weeds unit, dynamic stationary knife unit, pickup unit, conveyer unit to be separately fixed at frame 2 On, threshing and fragmentation cell, finished product conveyer unit are arranged on the right side of tool car on car body crossbeam 1.
Above-mentioned unit of starting is by starting motor, driving shaft, drive sprocket, starting frame, start bar A, start bar B, passive Axle, start wheel composition.During actually used, being one-level Chain conveyer owing to starting wheel, rotating speed of transmission shaft is fast, causes bottle gourd heap Long-pending and weeds are wrapped in driving shaft, cause chain to disconnect, and rate of breakdown is high.
As improvement, above-mentioned start unit and be operated alone by starting motor, can move integrally, can be according to actual melon patch Landform adjusts starts speed, it is to avoid follow-up broken process putty and mechanical breakdown.
Described go weeds unit to be reached by frame, stationary knife, moving knife, movable arbor, roguing mare, motor bearing, adjustment screw rod group Become.
As improvement, above-mentioned go weeds unit can move integrally, change, hydraulic motor be operated alone, can basis Bottle gourd and weed density adjust operator axle speed;Can be according to the moving knife of the differently configured quantity of type, ledger-plate number;Move simultaneously Cutter, ledger-plate are installed for combination, and non-solder is on operator axle, and scene is changed convenient.
Described dynamic stationary knife unit by frame, dynamic stationary knife motor, sprocket wheel, broken grass moving knife, movable arbor, moving knife guard shield, stationary knife axle, Broken grass stationary knife composition.
As improvement, above-mentioned dynamic stationary knife unit can move integrally, change, and is operated alone by dynamic stationary knife motor, is adjusted speed Degree, according to moving knife, the ledger-plate number of the differently configured quantity of type.Can according to the running and fixed blade number of the differently configured quantity of type and Dynamic stationary knife unit block;Moving knife, ledger-plate are installed for combination simultaneously, and non-solder is on operator axle, and scene is changed convenient.
As improvement, above-mentioned dynamic stationary knife unit can configure 5 or 7 groups and moves stationary knife axle, improves working performance.
Described pickup unit is arranged in tool car dead ahead, and improving needle roller structure is external nut locking, it is simple to change peace Dress;Improving former vehicle wheel spoke formula structure is integrally closed core structure, reduces weeds and is wound around fault rate.
Described conveyer unit is by carrying frame, conveying motor, front conveying axis, rear conveying axis, carrier chain, sprocket wheel, scraper plate And housing composition.
As improvement, above-mentioned conveyer unit can move integrally, change, hydraulic motor adjustable speed is operated alone.
Described threshing unit is by threshing motor, connection bearing, cutter shaft sprocket wheel, one-level threshing axle, upper shell, two grades of threshing axles And lower house composition.
As improvement, threshing motor band overload pressure regulation valve, safeguard protection pressure, adjustable speed can be set, can basis Bottle gourd moisture content is how many, suitably adjusts threshing speed and obtains clean surface Semen Benincasae.
Described fragmentation cell is by housing, one-level broken shaft, cutter group sprocket wheel, two-stage crushing axle, crusher motor and bracing frame group Become.
As improvement, crusher motor band overload pressure regulation valve, safeguard protection pressure, adjustable speed can be set, when broken list When being mixed with the foreign body increase broken shaft torsion such as stone in unit, crusher motor was opened with overload protection valve moment, reduced broken shaft Fracture defect, improves service life.
This utility model combination type automatic calabash seed cropper, during actual job, tool car 14 makes to pick up by lifting arm 7 Unit 8 and start unit 3 entirety and land, along with tool car is pushed ahead, bottle gourd is by starting the unit calabash wheel dead ahead In the range of reed puts between-wheel spacing, pickup unit 8 rotates clockwise, needle roller run into bottle gourd by bottle gourd sting in, and along with Bottle gourd is taken on comb arm 6 by the rotation of pickup unit 8, and bottle gourd is taken to weeds unit 5, roguing mare by comb arm 6 Reaching 35 drivings operator axle 34 quick rotation, weeds are cut off and orderly bottle gourd take dynamic stationary knife unit 4 to by dynamic stationary knife, dynamic fixed Cutter unit 4 completes secondary and goes weeds action and bottle gourd is sequentially sent into supply unit 9, and bottle gourd is delivered to crush by carrier chain 57 Unit 11 crushes, and carries out melon pulp then into threshing unit 12 and Semen Benincasae separate, and isolated calabash seed is defeated by finished product Go out device 10 to be spread across in storage bin hopper 13.
Compared with prior art, this utility model is separate unit fabricated structure, assembled unit driven separately, operating speed Spend adjustable, band scalable overload protection, have that rational and compact, automaticity are high, strong by performance, loading capacity big, can The advantages such as, job area wide, failure rate is low, security performance height, service life length high by property.
Accompanying drawing explanation
Fig. 1 is present configuration front view.
Fig. 2 is to start unit front view.
Fig. 3 is weeds unit front views.
Fig. 4 is stationary knife unit front view and sectional view.
Fig. 5 is supply unit front view and top view.
Fig. 6 is fragmentation cell left view.
Fig. 7 is threshing unit rearview.
Description of reference numerals: 1 is car body crossbeam, and 2 is frame, and 3 is to start unit, 4 are stationary knife unit, and 5 is weeds Unit, 6 is comb arm, and 7 is lifting arm, and 8 is pickup unit, and 9 is supply unit, and 10 is finished product output device, and 11 is broken single Unit, 12 is threshing unit, and 13 is storage bin hopper, and 14 is tool car, and 15 is hydraulic power source unit, and 16 is control unit, and 17 is to drive Sailing room, 21 is to start motor, and 22 is driving shaft, and 23 is drive sprocket, and 24 is to start frame, and 25 is to start bar A, and 26 is to start bar B, 27 is driven axle, and 28 is to start wheel, and 31 is underframe, and 32 is stationary knife, and 33 is moving knife, and 34 is operator axle, and 35 is that roguing mare reaches, 36 is motor bearing, and 37 is to adjust screw rod, and 41 is bracing frame, and 42 are stationary knife motor, and 43 is sprocket wheel, and 44 is broken grass moving knife, 45 Being movable arbor, 46 is moving knife guard shield, and 47 is stationary knife axle, and 48 is broken grass stationary knife, and 51 is conveying frame, and 52 is conveying motor, and 53 are Front conveying axis, 54 is housing, and 55 is scraper plate, and 56 is sprocket wheel, and 57 is carrier chain, and 58 is rear conveying axis, and 61 is upper shell, and 62 is one Level broken shaft, 63 is cutter shaft sprocket wheel, and 64 is crusher motor, and 65 is bracing frame, and 66 is two-stage crushing axle, and 67 is lower house, and 71 are Threshing motor, 72 is to connect bearing, and 73 is cutter shaft sprocket wheel, and 74 is one-level threshing axle, and 75 is upper shell, and 76 is two grades of threshing axles, 77 is lower house.
Detailed description of the invention
Embodiment 1: a kind of combination type automatic calabash seed cropper, installs as it is shown in figure 1, be included in tool car 14 dead ahead Starting unit 3, dynamic stationary knife unit 4, remove weeds unit 5, comb arm 6, pickup unit 8 in frame 2, is arranged on tool car 14 Supply unit 9 on the car body crossbeam 1 of right side, threshing unit 12, fragmentation cell 11, finished product output device 10, be arranged on car body horizontal Hydraulic power source unit 15 on beam 1 and be arranged on the control unit 16 that operator is indoor.Frame 2 be fixed on car body Lifting arm 7 couple.Engine mission output shaft on tool car 14 is coupled with duplex hydraulic pump by power takeoff, hydraulic pump Coupled by pressure duct and corresponding duplex electro hydraulic reversal valve, go weeds, dynamic stationary knife, start, conveyer, threshing and fragmentation cell Corresponding roguing mare reaches, moves stationary knife motor, starts motor, conveying motor, threshing motor, crusher motor high-pressure hose with right Flow speed control valve, the overload pressure answered regulate valve, multiple directional control valve couples.
Hydraulic pump controls to start motor 21 by control valve, roguing mare reaches 35, dynamic stationary knife motor 42, conveying motor 52, Threshing motor 71, crusher motor 64 operate, start motor, roguing mare reaches, dynamic stationary knife motor, conveying motor, threshing motor, broken Broken motor independently drives to be started unit 3, dynamic stationary knife unit 4, removes weeds unit 5, conveyer unit 9, fragmentation cell 11, de- Grain unit 12 works.
Above-mentioned tool car is 30 excavators or more high-power 50 excavator.
Above-mentioned hydraulic power supply includes that duplex hydraulic pump, duplex electro hydraulic reversal valve, flow speed control valve, overload pressure regulate valve, liquid Pressure motor.
Above-mentioned duplex electro hydraulic reversal valve includes 3 road electro-hydraulic reversing valves or 6 road electro-hydraulic reversing valves.
Above-mentioned control unit includes the most individually multi-channel control and the electronic key operation of push button, is furnished with scram button.
Embodiment 2: with reference to shown in Fig. 2, start unit 3 and include that starting motor 21 drives 22 turns of driving shaft by shaft coupling Dynamic, to start bar A25 and start bar B26 and be screwed and starting on wheel 28, driving shaft 22 and driven axle 27 are solid by bearing block Being scheduled on and start in frame 24, drive sprocket 23 is rotated by chain-driving driven axle 27, drives and starts wheel 28 rotation, completes calabash Melon is put.
It is characterized by: starting unit 3 can move integrally, be operated alone by starting motor 21, can be according to actual melon patch Landform adjusts starts speed, it is to avoid follow-up broken process putty and mechanical breakdown.
Embodiment 3: with reference to shown in Fig. 3, roguing mare reaches 35 and turns at motor bearing 36 by bolt peace to go weeds unit 5 to include On, drive operator axle 34 to rotate by shaft coupling, stationary knife 32 and moving knife 33, are adjusted every being arranged on operator axle 34 by shaft room Screw rod 37 is fixed by bolts on underframe 31, for adjusting the gap between stationary knife 32 and moving knife 33.
It is characterized by: go weeds unit 5 can move integrally, change, roguing mare reach 35 and be operated alone, can basis Bottle gourd and weed density adjust operator axle 34 speed;Can be according to the moving knife of the differently configured quantity of type, ledger-plate number;Simultaneously Moving knife, ledger-plate are installed for combination, and non-solder is on operator axle, and scene is changed convenient.
Embodiment 4: with reference to shown in Fig. 4, dynamic stationary knife unit 4 includes that dynamic stationary knife motor 42 drives 5 groups of moving knife by sprocket wheel 43 Axle 45 rotates, and broken grass moving knife 44 and broken grass stationary knife 48 nut of varying number are fastened on movable arbor 45 and stationary knife axle 47, dynamic Cutter guard shield 46 bolt is arranged on bracing frame 41, weeds can be avoided to be wound on power transmission shaft, cause shutdown.
It is characterized by: dynamic stationary knife unit 4 can move integrally, change, and is operated alone by dynamic stationary knife motor 42, is adjusted speed Degree, can be according to the moving knife of the differently configured quantity of type, ledger-plate number.Can be according to dynamic, the stationary knife of the differently configured quantity of type Shaft assembly;Moving knife, ledger-plate are installed for combination simultaneously, and non-solder is on operator axle, and scene is changed convenient.
As improvement, this utility model configures 5 groups and moves stationary knife shaft assembly, improves working performance.
Embodiment 5: with reference to shown in Fig. 5, conveyer unit 9 includes that carrying frame 51, housing 54 and conveying motor 52 passes through Shaft coupling couples with front conveying axis 53, and after sprocket wheel 56 is driven by carrier chain 57, conveying axis 58 rotates, and is fixed on carrier chain 57 Scraper plate 55 make bottle gourd be sent into fragmentation cell 11.
It is characterized by: supply unit 9 can move integrally, change, conveying motor 52 adjustable speed is operated alone.
Embodiment 6: with reference to shown in Fig. 6, fragmentation cell 11 includes upper shell 61, one-level broken shaft 62, cutter shaft sprocket wheel 63, breaks Broken motor 64, bracing frame 65, two-stage crushing axle 66 and lower house 67.Crusher motor 64 is fixed by bolts on bracing frame 65, logical Crossing shaft coupling drives two-stage crushing axle 66 to rotate, and cutter shaft sprocket wheel 63 is rotated by chain-driving one-level broken shaft 62, and bracing frame 65 is used Bolt is arranged on car body crossbeam 1.
It is characterized by: when being mixed with the foreign body such as stone in fragmentation cell 11 and increasing broken shaft torsion, crusher motor 64 with Overload protection valve can be opened moment, reduces broken shaft fracture defect, improves service life.Fragmentation cell 11 can move integrally, Change;Crusher motor 64 is operated alone adjustable speed, can set overload pressure.
Embodiment 7: with reference to shown in Fig. 7, threshing unit 12 includes threshing motor 71, connects bearing 72, cutter shaft sprocket wheel 73, Level threshing axle 74,75, two grades of threshing axles 76 of upper shell and lower house 77.Threshing motor 71 is fixed by bolts to connect bearing 72 On, drive two grades of threshing axles 76 to rotate by shaft coupling, cutter shaft sprocket wheel 73 is rotated by chain-driving one-level threshing axle 74, connects and props up Seat 72 is arranged on car body crossbeam 1 with bolt.
It is characterized by: threshing motor 71 adjustable speed, can be how many according to bottle gourd moisture content, suitably adjust threshing axle and rotate Speed, it is thus achieved that clean surface Semen Benincasae.Threshing unit 12 can move integrally, change;Threshing motor 71, with overload protection, can set Determine overload pressure.

Claims (7)

1. a combination type automatic calabash seed cropper, is characterized by: is included in tool car (14) dead ahead and is arranged on frame (2) On start unit (3), dynamic stationary knife unit (4), remove weeds unit (5), pickup unit (8), be arranged on tool car (14) right side Conveyer unit (9) on car body crossbeam (1), threshing unit (12), fragmentation cell (11), be arranged on car body crossbeam (1) Hydraulic power source unit (15) and be arranged on the control unit (16) that operator is indoor.
Combination type the most according to claim 1 automatic calabash seed cropper, is characterized in that: hydraulic power source unit (15) wraps Including duplex hydraulic pump, duplex electro hydraulic reversal valve, flow speed control valve, overload pressure relief valve, described duplex electro hydraulic reversal valve is that 6 roads are electro-hydraulic Reversal valve.
Combination type the most according to claim 1 automatic calabash seed cropper, is characterized in that: described control unit (16) includes The most individually multi-channel control and the electronic key operation of push button, be furnished with scram button.
Combination type the most according to claim 1 automatic calabash seed cropper, is characterized in that: starting unit (3) can be overall Mobile, replacing, is operated alone by starting motor, adjustable speed.
Combination type the most according to claim 1 automatic calabash seed cropper, is characterized in that: moves stationary knife unit (4), go weeds Unit (5) can move integrally, change, and is reached be operated alone by dynamic stationary knife motor, roguing mare respectively, adjustable speed.
Combination type the most according to claim 1 automatic calabash seed cropper, is characterized in that: conveyer unit (10) can be whole Body moves, changes, conveying motor be operated alone, adjustable speed.
Combination type the most according to claim 1 automatic calabash seed cropper, is characterized in that: fragmentation cell (11), threshing list Unit (12) can move integrally, change, and is operated alone by with the overload pressure regulation threshing motor of valve, crusher motor respectively, Adjustable speed.
CN201620430485.2U 2016-05-13 2016-05-13 Combination type automatic calabash seed cropper Expired - Fee Related CN205755554U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620430485.2U CN205755554U (en) 2016-05-13 2016-05-13 Combination type automatic calabash seed cropper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620430485.2U CN205755554U (en) 2016-05-13 2016-05-13 Combination type automatic calabash seed cropper

Publications (1)

Publication Number Publication Date
CN205755554U true CN205755554U (en) 2016-12-07

Family

ID=57409101

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620430485.2U Expired - Fee Related CN205755554U (en) 2016-05-13 2016-05-13 Combination type automatic calabash seed cropper

Country Status (1)

Country Link
CN (1) CN205755554U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019231415A1 (en) * 2018-05-31 2019-12-05 Selmaksan Selçuk Maki̇na Zi̇raat Aletleri̇ İmalat Ve Pazarlama Sanayi̇ Ve Ti̇caret Li̇mi̇ted Şi̇rketi̇ Enhanced adjusting mechanism for paddles in cleaning chambers of pumpkin harvesting machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019231415A1 (en) * 2018-05-31 2019-12-05 Selmaksan Selçuk Maki̇na Zi̇raat Aletleri̇ İmalat Ve Pazarlama Sanayi̇ Ve Ti̇caret Li̇mi̇ted Şi̇rketi̇ Enhanced adjusting mechanism for paddles in cleaning chambers of pumpkin harvesting machines

Similar Documents

Publication Publication Date Title
CN102812817B (en) Sugarcane harvester
CN103814698A (en) Working component power transmission mechanism of combine harvester
KR102403975B1 (en) Horizontal grinder with engine fuel consumption control
CN103814679A (en) Bridge of combine harvester and combine harvester with bridge
CN202697266U (en) Harvester for silages and yellow corn silages
KR101278431B1 (en) The all driving four-wheel steering system equipped with rear-wheel self-propelled baylor
CN205755554U (en) Combination type automatic calabash seed cropper
CN201107915Y (en) Harvester for corn
CN107306677A (en) Collect pick up, feeding, smash and cut into slices in branch processor of an organic whole
CN103718740A (en) Sugarcane harvester
CN203748278U (en) Working part power transmission mechanism of combine-harvester and combine-harvester
CN212278889U (en) Crawler-type shrub harvester
CN204034810U (en) Packaged type twig crushing machine
CN2699647Y (en) Double cylinder green fodder harvester
WO2006012869A1 (en) Device for cutting branches
CN204146033U (en) The supporting straw baler of wheeled harvester
CN103828546A (en) Combine harvester and working part power transmission mechanism thereof
CN202068766U (en) Traction type straw harvester
US10792666B2 (en) Combined mulcher and chipper attachment
EP1852011A1 (en) Self-propelled chaff cutter
CN104056701B (en) A kind of suspension type brush disintegrating mechanism
CN201304676Y (en) Plant-stalks crusher capable of automatic gripper feed
CN104984784A (en) Grain crushing device for forage harvester
CN112740901A (en) A equipment that is used for castration of high-stalk crop and clout to retrieve blue or green storage
CN103814680A (en) Operation machine

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20161207

Termination date: 20210513

CF01 Termination of patent right due to non-payment of annual fee