CN208634284U - A kind of screw conveyor accurate measurement reduction gearbox - Google Patents

Abstract

The utility model provides a kind of screw conveyor accurate measurement reduction gearbox, including drive end bearing bracket and rear end cap, it is bolted between drive end bearing bracket and rear end cap, input gear axle and output shaft pass through bearing respectively and are fixed in drive end bearing bracket and rear end cap, output gear is fixed on output shaft by key, engaged transmission between output gear and input gear axle, input gear axle uses modulus for 1.5, the number of teeth is 11, the helical gear for the small number of teeth of low module that modification coefficient is 0.38, output gear uses modulus for 1.5, the number of teeth is 109, the helical gear that modification coefficient is 0.38, transmission ratio is 1:10.This screw conveyor accurate measurement reduction gearbox uses level-one helical gear slowing-down structure, transmission ratio 1:10, and input gear axle controls whole reduction gearbox appearance profile miniaturization using the helical gear of the small number of teeth of low module, while meeting large transmission ratio necessary requirement again.

Description

A kind of screw conveyor accurate measurement reduction gearbox

Technical field

The utility model relates to a kind of reduction gearboxes, and in particular to a kind of screw conveyor accurate measurement reduction gearbox.

Background technique

For raising concrete mixing quality, need to carry out material amounts in formula accurate weighing, it is defeated in main feeding screw Auxiliary screw conveyer of the machine parallel configuration for accurate feeding is sent, due to the contour structures of auxiliary screw conveyer, power All relatively small, reduction gearbox used in auxiliary screw conveyer is generally level-one spur gear slowing-down structure, the reduction gearbox of adapted Using the transmission ratio of 1:5, when transmission ratio being used to be measured for the reduction gearbox of 1:5, due to reduction gearbox output speed still compared with Height, thus measure and it is inaccurate, if wanting to further increase proportioning accuracy, can start in terms of following two: 1, increase it Its auxiliary body increases accurate measurement, but on the one hand such mode also adds equipment cost, will be on the other hand machinery The installation and debugging of equipment increase difficulty；2, the revolving speed of helical feed machine mandrel is reduced, such mode needs the transmission to reduction gearbox Than being changed, the transmission ratio for increasing reduction gearbox can make the revolving speed of screw conveyor mandrel reduce, but if using two Grade slowing-down structure certainly will will increase reduction gearbox overall volume, be unfavorable for installing in small space, if using primary transmission, The problems such as gear is beated, noise is big, gear is easy to wear is be easy to cause under large transmission ratio.

Utility model content

In view of the deficiencies of the prior art, the utility model proposes a kind of spiral shells using level-one helical gear large transmission ratio structure Revolve conveyer accurate measurement reduction gearbox.

To realize above-mentioned technical proposal, the utility model provides a kind of screw conveyor accurate measurement reduction gearbox, wraps Include: procapsid and back casing are bolted between the procapsid and back casing, and the front end of input gear axle passes through first Bearing is fixed in procapsid, and the rear end of input gear axle is fixed in back casing by second bearing, the output end of output shaft It is fixed in back casing by 3rd bearing, the fixing end of output shaft is fixed in procapsid by fourth bearing, output gear It is fixed on output shaft and between 3rd bearing and fourth bearing by key, between the output gear and input gear axle Engaged transmission, it is characterised in that: the modulus m of the input gear axle₁It is 1.5, number of teeth z₁It is 11, modification coefficient x₁It is 0.38, top Knuckle-tooth thickness s₁For 0.596mm, tip diameter d_a1For 20.78mm, root diameter d_f1For 14.23mm, the output gear Modulus m₂It is 1.5, tooth number Z₂It is 109, modification coefficient X₂It is 0.18, tip circle transverse tooth thickness s₂For 1.219mm, tip diameter d_a2For 169.017mm root diameter d_f2For 162.46mm, transmission ratio 1:10.

Preferably, the output gear and input gear axle are all made of 20CrMoTi carburizing steel material, and tooth face hardness is HRC58~62.

Preferably, input gear axle is located on the procapsid and motor connecting flange is provided with to interface.

Preferably, it is provided with oil filler point at the top of the back casing, is configured with oil filler point nut cap, the rear shell on oil filler point The side end and bottom of body, which are provided with, unloads oilhole, described to unload on oilhole configured with the nut cap of emptying hole.

Preferably, the side end of the back casing is provided with access plate.

A kind of screw conveyor provided by the utility model is with the beneficial effect of accurate measurement reduction gearbox: this spiral transferring Machine accurate measurement reduction gearbox is sent to use mould using level-one helical gear slowing-down structure, transmission ratio 1:10, and input gear axle The helical gear for the small number of teeth of low module for being 0.38 for the 1.5, number of teeth 11, modification coefficient is counted to control whole reduction gearbox shape wheel Guo Miniaturization, while meeting large transmission ratio necessary requirement again, the reduction gearbox for being 1:5 relative to conventional gear can be by helical feed The revolving speed relative reduction of machine 50%, screw conveyor metering precision improves 1 times of raising conveying capacity accurate measurement, reduce Measuring cost.

Detailed description of the invention

Fig. 1 is the schematic perspective view I of the utility model.

Fig. 2 is the schematic perspective view II of the utility model.

Fig. 3 is the cross-sectional view of the utility model.

Fig. 4 is the schematic diagram of internal structure of the utility model.

Fig. 5 is input gear axle and output gear mesh schematic representation in the utility model.

Fig. 6 is the schematic perspective view of input gear axle in the utility model.

In figure: 1, procapsid；2, back casing；3, input gear axle；4, output shaft；5, oil filler point nut cap；6, emptying port lid Cap；7, motor connecting flange；8, access plate；9, bolt；10, sealing cover；11, gear part；12, output gear；13, first Bearing；14, second bearing；15,3rd bearing；16, fourth bearing；17, key.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clear, complete description, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Ordinary people in the field's every other embodiment obtained without making creative work, belongs to The protection scope of the utility model.

A kind of embodiment: screw conveyor accurate measurement reduction gearbox.

Referring to figs. 1 to shown in Fig. 6, a kind of screw conveyor accurate measurement reduction gearbox, including procapsid 1 and back casing 2, It is connected between the procapsid 1 and back casing 2 by bolt 9, before the front end of input gear axle 3 is fixed on by first bearing 13 In shell 1, the rear end of input gear axle 3 is fixed in back casing 2 by second bearing 14, and motor connecting flange 7 is arranged preceding On shell 1 and it is located at input gear axle 3 to interface, motor can be fixed on by motor connecting flange 7 on procapsid 1 and electricity It can be connected by axle sleeve between the output shaft and input gear axle 3 of machine, motor rotation drives input gear axle 3 to rotate；Output shaft 4 Output end be fixed in back casing 2 by 3rd bearing 15, the fixing end of output shaft 4 is fixed on front housing by fourth bearing 16 In body 1,4 output end of output shaft is provided with sealing cover 10 at back casing 2, and input gear axle 3 is arranged in parallel with output shaft 4, Output shaft 4 is connect by axle sleeve with helical feed machine mandrel, and the output revolutions of output shaft 4 is the output of helical feed machine mandrel Revolution, output gear 12 are fixed on output shaft 4 and between 3rd bearing 15 and fourth bearing 16 by key 17, output gear Wheel 12 uses modulus m₂For 1.5, tooth number Z₂For 109, modification coefficient x₂For 0.18, tip circle transverse tooth thickness s₂It is straight for 1.219mm, outside circle Diameter d_a2For 169.017mm, root diameter d_f2For the helical gear of 162.46mm, output gear 12 uses 20CrMoTi carburizing steel Material is cast, tooth face hardness HRC60；Gear part 11 in input gear axle 3 is designed as modulus m₁For 1.5, number of teeth z₁For 11, modification coefficient x₁For 0.38, tip circle transverse tooth thickness s₁For 0.596mm, tip diameter d_a1For 20.78mm, root diameter d_f1For The helical gear of 14.23mm, input gear axle 3 are cast using 20CrMoTi carburizing steel material, tooth face hardness HRC60, institute State engaged transmission between output gear 12 and input gear axle 3, transmission ratio 1:10, since transmission ratio increases, to the tooth of transmission Wheel require it is stringenter, for the drive mechanism requirement for meeting large transmission ratio, in the present embodiment, using 20CrMoTi carburizing steel material So that tooth face hardness is reached HRC60 by heat treatment, make the flank of tooth that there is fabulous wearability, while there is good toughness again and resist Fatigue behaviour, requirement when meeting large transmission ratio transmission to Gear Surface Strength and abrasion.Input gear axle 3 and output gear 12 Design parameter is shown in Table 1:

1 input gear axle of table and output gear parameter list

Input gear axle 3 uses modulus m in the present embodiment₁For 1.5, number of teeth z₁For 11, modification coefficient x₁For 0.38, tip circle Transverse tooth thickness s₁For 0.596mm, tip diameter d_a1For 20.78mm, root diameter d_f1It, can be effective for the helical gear of 14.23mm Whole reduction gearbox shape wheel Guo miniaturization is controlled, while meeting large transmission ratio necessary requirement again, while using modification coefficient x₁For 0.38 diagonal input gear axle 3 and modification coefficient x₂Engaged transmission, two helical teeth between 0.18 diagonal output gear 12 Contact ratio and overlap ratio between wheel reaches 2.076, and much higher than the national standard that ordinary gear registration is 1.3, registration is bigger, table Bright gear-driven continuity and stationarity are better, and the matter each other of the number of gear teeth in input gear axle 3 and output gear 12 Number is conducive to eliminate influence of the gear manufacture error to transmission.

In the present embodiment, using 12 two helical gear engaged transmissions of input gear axle 3 and output gear (referring to Fig. 4 and Fig. 5 It is shown), in helical gear engaged transmission, the contact line of gear is to start to engage and take off with the inclined straight line of Gear axis, gear From being all gradual, thus stable drive, noise are small, while this engagement system decreases foozle to the shadow of transmission It rings；Since Meshing engagement can be good, this reduces the load of each pair of gear, thus the opposite carrying energy for improving gear Power, extends the service life of gear, and makes stable drive, while not generate the minimum teeth number that root is cut more straight for helical teeth master gear Gear is few, therefore uses the available more compact construction of Helical gear Transmission, and in the present embodiment, input gear axle 3 is using small The helical gear of the small number of teeth of modulus minimizes to control whole reduction gearbox shape wheel Guo, while meeting large transmission ratio necessary requirement again, , can be by the revolving speed relative reduction of screw conveyor 50% relative to traditional reduction gearbox, screw conveyor metering precision mentions 1 times of raising conveying capacity accurate measurement has been risen, measuring cost is reduced.

Shown in referring to Figures 1 and 2, the top of the back casing 2 is provided with oil filler point, is configured with oil-hole cover on oil filler point Cap 5, the side end and bottom of the back casing 2, which are provided with, unloads oilhole, described to unload on oilhole configured with emptying hole nut cap 6, institute The side end for stating back casing 2 is additionally provided with access plate 8, when needing to inject lubricating oil, can open oil filler point nut cap 5, leads to It crosses oil filler point and injects lubricating oil into reduction gearbox, when needing replacing lubricating oil, can be unloaded by opening emptying hole nut cap 6 Oil operation can carry out inspection operation to reduction gearbox internal structure by opening access plate 8.

The above be the utility model preferred embodiment, but the utility model should not be limited to the embodiment and Attached drawing disclosure of that is all fallen so all do not depart from the lower equivalent or modification completed of spirit disclosed in the utility model Enter the range of the utility model protection.

Claims (5)

1. a kind of screw conveyor accurate measurement reduction gearbox, comprising: procapsid and back casing, the procapsid and back casing it Between be bolted, the front end of input gear axle is fixed in procapsid by first bearing, and the rear end of input gear axle is logical It crosses second bearing to be fixed in back casing, the output end of output shaft is fixed in back casing by 3rd bearing, and output shaft is consolidated Fixed end is fixed in procapsid by fourth bearing, and output gear is fixed on output shaft by key and is located at 3rd bearing and the Between four bearings, engaged transmission between the output gear and input gear axle, it is characterised in that: the mould of the input gear axle Number m₁It is 1.5, number of teeth z₁It is 11, modification coefficient x₁It is 0.38, tip circle transverse tooth thickness s₁For 0.596mm, tip diameter d_a1For 20.78mm root diameter d_f1For 14.23mm, the modulus m of the output gear₂It is 1.5, tooth number Z₂It is 109, modification coefficient X₂ It is 0.18, tip circle transverse tooth thickness s₂For 1.219mm, tip diameter d_a2For 169.017mm, root diameter d_f2For 162.46mm, pass Dynamic ratio is 1:10.

2. screw conveyor as described in claim 1 accurate measurement reduction gearbox, it is characterised in that: the output gear with it is defeated Enter gear shaft and be all made of 20CrMoTi carburizing steel material, tooth face hardness is HRC58~62.

3. screw conveyor as described in claim 1 accurate measurement reduction gearbox, it is characterised in that: be located on the procapsid Input gear axle is provided with motor connecting flange to interface.

4. screw conveyor as described in claim 1 accurate measurement reduction gearbox, it is characterised in that: the top of the back casing It is provided with oil filler point, is configured with oil filler point nut cap on oil filler point, the side end and bottom of the back casing, which are provided with, unloads oilhole, It is described to unload on oilhole configured with the nut cap of emptying hole.

5. screw conveyor as described in claim 1 accurate measurement reduction gearbox, it is characterised in that: the side of the back casing Portion is provided with access plate.