CN103769364B - A kind of resonance screens of novel motor synchronizing bi-motor installation form - Google Patents

A kind of resonance screens of novel motor synchronizing bi-motor installation form Download PDF

Info

Publication number
CN103769364B
CN103769364B CN201410027972.XA CN201410027972A CN103769364B CN 103769364 B CN103769364 B CN 103769364B CN 201410027972 A CN201410027972 A CN 201410027972A CN 103769364 B CN103769364 B CN 103769364B
Authority
CN
China
Prior art keywords
motor
plate
web
vibrating
synchronizing
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.)
Active
Application number
CN201410027972.XA
Other languages
Chinese (zh)
Other versions
CN103769364A (en
Inventor
刘挺
蒋毅
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.)
West Of Chengdu Petroleum Equipment Ltd Co
Original Assignee
West Of Chengdu Petroleum Equipment Ltd Co
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 West Of Chengdu Petroleum Equipment Ltd Co filed Critical West Of Chengdu Petroleum Equipment Ltd Co
Priority to CN201410027972.XA priority Critical patent/CN103769364B/en
Publication of CN103769364A publication Critical patent/CN103769364A/en
Application granted granted Critical
Publication of CN103769364B publication Critical patent/CN103769364B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention discloses a kind of resonance screens of novel motor synchronizing bi-motor installation form, it comprises excitor (4), sifting bed (1), main vibration spring (7), isolation spring (2) and two vibrating motors (3), vibrating motor (3) is fixedly installed in motor beam (8), the cross section of motor beam (8) becomes I shape, it is made up of upper plate (9), lower plate (10) and web (11), two vibrating motors (3) are symmetricly set in the both sides of web (11) by multiple connecting bolt (12), the making a concerted effort of vibrating motor (3) be parallel to web (11).The invention has the beneficial effects as follows: while ACU whole height, motor beam is made to meet force request, take full advantage of height space, can the higher i-shaped beams of design height, substantially increase bending strength, but device height is not more than traditional shaker, big-and-middle-sized vibratory sieve application motor synchronizing bi-motor is made to become possibility.

Description

A kind of resonance screens of novel motor synchronizing bi-motor installation form
Technical field
The present invention relates to vibratory sieve technical field, particularly a kind of resonance screens of novel motor synchronizing bi-motor installation form.
Background technology
Since the sixties in last century; owing to finding the inherent characteristic that can utilize vibration in vibrating machine; two by two separately-driven eccentric rotors of motor between realize motor synchronizing; form stable making a concerted effort; drive vibratory sieve linearly track, Circular test or elliptic vibrations, the structure of vibrating machine is obtained and greatly simplifies.Through the development of decades, define the manufacturing industry of ripe vibrating motor eccentric rotor and vibrating motor combined, and be widely used in all kinds of vibrating machine.This technology is in the field of business is called as the second generation method of synchronization, i.e. Vibration Synchronization, or motor synchronizing.The first generation method of synchronization is rigid water hammer, or forcing synchronization, and motor drives vibrator, uses transmission mechanism to ensure run-in synchronism between vibrator.
Self-synchronizing vibrating screen in the market, adopt twin motors exciting mode, it avoid the intermediate transmission mechanism that noise is large, fault rate is high, two symmetrical tiltably-mounteds of shock electric machine are in two sides of sifting bed, the line center of two motors overlaps with sifting bed barycenter, ensure the overall translation of vibratory sieve with this and produce elliptical orbit, the BEN balanced elliptical shale shaker produced as SWACO company of the U.S. is exactly this type.But its weak point is that device volume is comparatively large, need take larger space position; Motor is placed in sifting bed both sides, and the synchronism of connector rigidity, two motors is all poor.
In order to improve the synchronism of two motors, the installing space of two motors should be reduced as much as possible, this just requires that the installation site of motor is as much as possible near the center of sifting bed, but regrettably, for medium-and-large-sized vibratory sieve, because motor beam span is large, if motor to be installed on motor beam central authorities, stressing conditions is by very severe, if the sheet metal thickness of increase motor beam, not only add quality, and this quality increased also brings more load under vibrating conditions.
We know, be motor beam that is I-shaped or rectangle for cross section, its bending resistant section coefficient is:
W Z = BH 3 - bh 3 6 H
That is, its bending strength roughly to square being directly proportional of I-beam or rectangle depth of beam.Traditional installation form is the surface of motor beam steel plate motor or vibrator being installed on I-shaped or square-section, and the direction of making a concerted effort is perpendicular to plate face, and the upper mounting plate of mounted motor will be subject to much bigger stress.So even if by the depth of section of motor beam design get Geng Gao, although integral bending improves, the stressed of upper mounting plate can not improve, meanwhile, the motor beam that depth of section is too high too increases the complete machine height of vibratory sieve.
The common method overcome the above problems is:
The method improving bending strength is installed on vibrating motor or vibrator closer to both sides, instead of the central authorities of motor beam, the significantly less requirement to motor beam bending strength.The cost of this method is, because two vibrating motors or vibrator spacing are far away, is difficult to realize motor synchronizing running.So current large-scale vibrating screen all adopts the mode of forcing synchronization, add and be in transmission connection and bearing, complex structure, add trouble point.
The mode reducing upper mounting plate stress adds the wall thickness of steel plate, increases the reinforcement below upper mounting plate.
In the structure of at home and abroad off-resonance large-scale vibrating screen, substantially do not apply double oscillating electromotor motor synchronizing technology.
In a word, traditional installation form meets with bottleneck on height dimension.Higher bending strength needs height, is installed on by vibrating motor on motor beam and wastes height space again.
For Near resonance oscillating sieve, patent 201210054004.9 " a kind of double mass resonance screens " uses connecting axle to be linked together by multiple electric motors, complex structure.Patent 201220637538.x " a kind of novel double mass resonance screens " uses shaft coupling to be connected motor and vibrator with patent 201220531087.1 " a kind of novel compositions vibrating motor ", strengthen the spacing between vibrator, improve the stressed of motor beam, but do not use general vibrating motor, its structure is more complicated.Patent 201120416481.6 " double mass resonance screens " employs double oscillating electromotor motor synchronizing technology, but employs 3 Heavy Traverses and meet requirement of strength, and uses the motor of custom-made, poor universality.Two motor synchronizing motors are installed on motor beam central authorities by patent 201310366160.3 " the double mass Near resonance oscillating that a kind of screen frame is separated with sifting bed sieves ", although use less vibrating motor relative to off-resonance sieve, the stressed of its motor beam still can be optimized further.
Summary of the invention
The object of the invention is to the shortcoming overcoming prior art, provide a kind of and take full advantage of height space, while not increasing equipment total height, greatly improve the resonance screens of the stressed novel motor synchronizing bi-motor installation form of motor beam.
Object of the present invention is achieved through the following technical solutions: a kind of resonance screens of novel motor synchronizing bi-motor installation form, it comprises excitor, sifting bed, main vibration spring, isolation spring and two vibrating motors, sifting bed is installed on mounting base by the isolation spring that both sides are arranged, main vibration spring is arranged between excitor and sifting bed, motor beam is provided with between the side plate B of excitor, vibrating motor is fixedly installed in motor beam, the cross section of described motor beam becomes I shape, it is by upper plate, lower plate and web are formed, two described vibrating motors are symmetricly set in the both sides of web by multiple connecting bolt, the making a concerted effort of vibrating motor be parallel to web.
Between described main vibration spring and horizontal plane, there is angle, between excitor and sifting bed, be connected with rocking arm.
Described vibrating motor is installed on the central part of motor beam.
Described connecting bolt through after the installing hole of the installing hole on the installing hole of a vibrating motor, web and another vibrating motor, is fixed by the nut check being installed on bolt end successively.
Described motor beam is arch, it is made up of horizontal segment and the tilting section being divided into horizontal segment both sides, its cross section is I shape, horizontal segment is made up of upper plate, lower plate and web, tilting section is made up of oblique upper plate, tiltedly lower plate and skew web plate, web and skew web plate are positioned at same plane, and this plane orthogonal also and between vertical plane has angle in the side plate B of excitor.
Described web is parallel to the axis of main vibration spring.
Described horizontal segment or tilting section are provided with the gusset improving stressing conditions.
Tilting section is that inside height is identical with straightway height, outside height is tubaeform higher than straightway height.
The edge of described tilting section is fixedly connected with installing plate, and tilting section is connected with excitor by installing plate.
Vibrating motor, when installation and removal, uses nonmetal high-strength flexible rope to be bundled in motor beam.
The present invention has the following advantages: aspectant two surfaces being arranged on web of vibrating motor of two motor synchronizings running of the present invention, the making a concerted effort of vibrating motor is parallel to web, substantially improves the stressed of motor cabinet; Because vibrating motor is installed between upper plate and lower plate, take full advantage of height space, can the higher i-shaped beams of design height, substantially increase bending strength, but the motor that its height H exceeding sifting bed top edge is not more than conventional mounting form exceeds the height of sifting bed top edge.The present invention takes full advantage of height space, under the height dimension being not more than traditional structure, achieves highly higher bending resistance square beam design, achieves the design of stressed good arched girder, avoid motor upper mounting plate and be out of shape perpendicular to the excessive stresses in direction, plate face.
The installation form of vibrating motor of the present invention, make the motor beam of arch while not increasing equipment total height, greatly improve the stressed of motor beam, make big-and-middle-sized vibratory sieve application motor synchronizing bi-motor become possibility, alleviate the weight of motor beam, take full advantage of height space.By improvement of the present invention, achieve and double oscillating electromotor motor synchronizing technology is applied to medium-and-large-sized vibratory sieve well, optimize the stressed of motor beam, while ACU whole height, motor beam is made to meet force request, do not use any transmission, bindiny mechanism simultaneously, beyond motor, do not use any bearing, enormously simplify structure.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
Fig. 2 is the structural representation of motor beam of the present invention
Fig. 3 is the left TV structure schematic diagram of motor beam of the present invention
Structural representation when Fig. 4 is vibrating motor of the present invention handling
Left TV structure schematic diagram when Fig. 5 is vibrating motor of the present invention handling
In figure, 1-sifting bed, 2-isolation spring, 3-vibrating motor, 4-excitor, 5-side plate B, 6-isolation spring seat, 7-main vibration spring, 8-motor beam, 9-upper plate, 10-lower plate, 11-web, 12-connecting bolt, the nonmetal high strength cord of 13-, 14-horizontal segment, 15-tilting section, the oblique upper plate of 16-, the oblique lower plate of 17-, 18-skew web plate, 19-gusset, 20-installing plate, 21-rocking arm.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described, and protection scope of the present invention is not limited to the following stated:
As shown in Figure 1, a kind of resonance screens of novel motor synchronizing bi-motor installation form, it comprises excitor 4, sifting bed 1, main vibration spring 7, isolation spring 2 and two vibrating motors 3, in sifting bed 1, compass screen surface is installed, compass screen surface is arranged between the side plate A of sifting bed 1, the isolation spring 2 that sifting bed 1 is arranged by both sides is installed on mounting base, the side plate A of sifting bed 1 is furnished with isolation spring seat 6, isolation spring 2 is installed between isolation spring seat 6 and mounting base, main vibration spring 7 is arranged between excitor 4 and sifting bed 1, tie-beam and motor beam 8 is provided with between the side plate B5 of excitor 4, tie-beam is fixedly connected with the side plate B5 of respective side respectively with the two ends of motor beam 8, vibrating motor 3 is fixedly installed in motor beam 8, as Fig. 2, shown in Fig. 3, the cross section of described motor beam 8 becomes I shape, it is by upper plate 9, lower plate 10 and web 11 are formed, web 11 is fixedly installed between upper plate 9 and lower plate 10, and all perpendicular to upper plate 9 and lower plate 10, upper plate 9 and lower plate 10 bear moment of flexure, two described vibrating motors 3 are symmetricly set in the both sides of web 11, i.e. aspectant two surfaces being arranged on web 11 of vibrating motor 3 of two motor synchronizing runnings, the making a concerted effort of vibrating motor 3 be parallel to web 11, vibrating motor 3 is fixedly installed on web 11 by multiple connecting bolt 12.Through Strength co-mputation, bending resistance square ability meets the formula of bending resistant section coefficient in " background information ".Because vibrating motor 3 is installed between upper plate 9 and lower plate 10, take full advantage of height space, can the higher i-shaped beams of design height, substantially increase bending strength, but the motor that its height H exceeding excitor 4 top edge is not more than conventional mounting form exceeds the height of excitor 4 top edge.Thus make the present invention take full advantage of height space, under the height dimension being not more than traditional structure, achieve highly higher bending resistance square beam design, achieve the design of stressed good arched girder, avoid motor upper mounting plate 20 and be out of shape perpendicular to the excessive stresses in direction, plate face.
As shown in Figure 1, have angle between described main vibration spring 7 and horizontal plane, angle is 45 °, is connected with rocking arm 21 between excitor 4 and sifting bed 1.
As shown in Figure 2 and Figure 3, preferably, vibrating motor 3 is installed on the central part of motor beam 8, and described connecting bolt 12 is successively through after the installing hole of the installing hole on the installing hole of a vibrating motor 3, web 11 and another vibrating motor 3, fixed by the nut check being installed on bolt end, namely vibrating motor 3 uses bolt to penetrate two vibrating motors 3 and web 11 links together.The installing hole that two vibrating motors 3 penetrate two vibrating motors 3 and web 11 by the stay bolt of same set of bolt group links together.As shown in Figure 4, Figure 5, when dismounting and installation vibrating motor 3, nonmetal high strength cord 13 can be used will wherein to bundle by a vibrating motor 3 through the aperture of motor beam 8, operation easy for removal and installation.
As shown in Figure 2 and Figure 3, described motor beam 8 is arch, it is made up of horizontal segment 14 and the tilting section 15 being divided into horizontal segment 14 both sides, its cross section is I shape, horizontal segment 14 is made up of upper plate 9, lower plate 10 and web 11, web 11 is fixedly installed between upper plate 9 and lower plate 10, and all perpendicular to upper plate 9 and lower plate 10; Tilting section 15 is made up of oblique upper plate 16, tiltedly lower plate 17 and skew web plate 18, and skew web plate 18 is fixedly installed between oblique upper plate 16 and oblique lower plate 17, and all perpendicular to oblique upper plate 16 and oblique lower plate 17.Web 11 and skew web plate 18 are positioned at same plane, this plane orthogonal also and between vertical plane has angle in the side plate B5 of excitor 4, and described angle is 0 ~ 80 °, preferably, this angle and main vibration spring 7 consistent with the angle had between horizontal plane, namely web 11 is parallel to the axis of main vibration spring 7.Arched girder has satisfactory texture intensity, but under traditional motor or vibrator installation form, to significantly increase the height of vibratory sieve, for big-and-middle-sized vibratory sieve, the further increase of height dimension will make troubles to transport and installation, and therefore, stressed good arched girder also needs height, limit the application of arched girder on big-and-middle-sized vibratory sieve, the technical scheme that the vibrating motor 3 thus by using arched girder to realize two motor synchronizing runnings is installed on close motor beam 8 central part is also impracticable.The installation form of vibrating motor 3 of the present invention, makes the motor beam 8 of arch while not increasing equipment total height, greatly improves the stressed of motor beam 8.
As shown in Figure 2, described horizontal segment 14 or tilting section 15 are provided with the gusset 19 improving stressing conditions.
The oblique upper plate 16 of the side that described tilting section 15 is connected with straightway and the spacing tiltedly between lower plate 17, i.e. the height of skew web plate 18 is equal with the spacing between lower plate 10 with the upper plate 9 of straightway; The oblique upper plate 16 of the side that tilting section 15 is connected with the side plate B5 of excitor 4 and the spacing tiltedly between lower plate 17, the i.e. height of skew web plate 18, be greater than the spacing between the upper plate 9 of straightway and lower plate 10, thus the tilting section 15 made is formed, and inside height is identical with straightway height, outside height is tubaeform higher than straightway height, what be conducive to stress more to disperse is delivered on the side plate B5 of excitor 4.
The edge of described tilting section 15 is fixedly connected with installing plate 20, and tilting section 15 is connected with excitor 4 by installing plate 20.
By improvement of the present invention, achieve and double oscillating electromotor 3 motor synchronizing technology is applied to medium-and-large-sized vibratory sieve well, optimize the stressed of motor beam 8, while ACU whole height, motor beam 8 is made to meet force request, do not use any transmission, bindiny mechanism simultaneously, beyond motor, do not use any bearing, enormously simplify structure.
Below by analysis data, the invention will be further described:
1, the stressed contrast of motor beam of the present invention and conventional mounting beam:
2, the physical dimension of two kinds of beams of above-mentioned analysis data, unit mm
3, the mechanical condition of above-mentioned analysis data: the static stress analysis being fixed constraint with isolation spring seat
Making a concerted effort of vibrating motor: 400000N, under direction is oblique, the acceleration of overall mass: 40m/s 2, under direction is oblique.
Shown by finite Element Intensity Analysis result, the stress value of motor beam of the present invention and stress distribution are all far superior to traditional beam.

Claims (9)

1. the resonance screens of a novel motor synchronizing bi-motor installation form, it comprises excitor (4), sifting bed (1), main vibration spring (7), isolation spring (2) and two vibrating motors (3), the isolation spring (2) that sifting bed (1) is arranged by both sides is installed on mounting base, main vibration spring (7) is arranged between excitor (4) and sifting bed (1), the side plate B(5 of excitor (4)) between be provided with motor beam (8), vibrating motor (3) is fixedly installed in motor beam (8), it is characterized in that: the cross section of described motor beam (8) becomes I shape, it is by upper plate (9), lower plate (10) and web (11) are formed, two described vibrating motors (3) are symmetricly set in the both sides of web (11) by multiple connecting bolt (12), the making a concerted effort of vibrating motor (3) be parallel to web (11),
Described motor beam (8) is arch, it is made up of horizontal segment (14) and the tilting section (15) that is divided into horizontal segment (14) both sides, its cross section is I shape, horizontal segment (14) is made up of upper plate (9), lower plate (10) and web (11), tilting section (15) is made up of oblique upper plate (16), tiltedly lower plate (17) and skew web plate (18), web (11) and skew web plate (18) are positioned at same plane, and this plane orthogonal is in the side plate B(5 of excitor (4)) and and between vertical plane, there is angle.
2. the resonance screens of a kind of novel motor synchronizing bi-motor installation form according to claim 1, is characterized in that: have angle between described main vibration spring (7) and horizontal plane, be connected with rocking arm (21) between excitor (4) and sifting bed (1).
3. the resonance screens of a kind of novel motor synchronizing bi-motor installation form according to claim 1, is characterized in that: described vibrating motor (3) is installed on the central part of motor beam (8).
4. the resonance screens of a kind of novel motor synchronizing bi-motor installation form according to claim 1, it is characterized in that: described connecting bolt (12) through after the installing hole of the installing hole on the installing hole of a vibrating motor (3), web (11) and another vibrating motor (3), is fixed by the nut check being installed on bolt end successively.
5. the resonance screens of a kind of novel motor synchronizing bi-motor installation form according to claim 1, is characterized in that: described web (11) is parallel to the axis of main vibration spring (7).
6. the resonance screens of a kind of novel motor synchronizing bi-motor installation form according to claim 1, is characterized in that: described horizontal segment (14) or tilting section (15) are provided with the gusset (19) improving stressing conditions.
7. the resonance screens of a kind of novel motor synchronizing bi-motor installation form according to claim 1, is characterized in that: described tilting section (15) is for inside height is identical with straightway height, outside height is tubaeform higher than straightway height.
8. the resonance screens of a kind of novel motor synchronizing bi-motor installation form according to claim 1, it is characterized in that: the edge of described tilting section (15) is fixedly connected with installing plate (20), and tilting section (15) is connected with excitor (4) by installing plate (20).
9. the resonance screens of a kind of novel motor synchronizing bi-motor installation form according to claim 1, is characterized in that: described vibrating motor (3), when installation and removal, uses nonmetal high-strength flexible rope to be bundled in motor beam (8).
CN201410027972.XA 2014-01-21 2014-01-21 A kind of resonance screens of novel motor synchronizing bi-motor installation form Active CN103769364B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410027972.XA CN103769364B (en) 2014-01-21 2014-01-21 A kind of resonance screens of novel motor synchronizing bi-motor installation form

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410027972.XA CN103769364B (en) 2014-01-21 2014-01-21 A kind of resonance screens of novel motor synchronizing bi-motor installation form

Publications (2)

Publication Number Publication Date
CN103769364A CN103769364A (en) 2014-05-07
CN103769364B true CN103769364B (en) 2016-01-20

Family

ID=50562388

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410027972.XA Active CN103769364B (en) 2014-01-21 2014-01-21 A kind of resonance screens of novel motor synchronizing bi-motor installation form

Country Status (1)

Country Link
CN (1) CN103769364B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104889048A (en) * 2015-04-28 2015-09-09 徐州徐工筑路机械有限公司 Elliptical vibrating screen for asphalt mixing plant

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3477572A (en) * 1967-05-22 1969-11-11 Sweco Inc Vibratory separator
CN102671857A (en) * 2011-03-13 2012-09-19 李卓 Two-mass resonance screen
CN202509622U (en) * 2012-03-15 2012-10-31 长沙三远钢结构有限公司 Steel structure supporting beam
CN202921557U (en) * 2012-11-28 2013-05-08 李彦 Novel near resonant double-mass linear vibrating screen
CN103394462A (en) * 2013-08-21 2013-11-20 成都西部石油装备有限公司 Screen frame and screen bed separated double-plastid near resonance screen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100868780B1 (en) * 2008-05-26 2008-11-17 용원기계공업(주) Scalping screen equipment of aggregate production

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3477572A (en) * 1967-05-22 1969-11-11 Sweco Inc Vibratory separator
CN102671857A (en) * 2011-03-13 2012-09-19 李卓 Two-mass resonance screen
CN202509622U (en) * 2012-03-15 2012-10-31 长沙三远钢结构有限公司 Steel structure supporting beam
CN202921557U (en) * 2012-11-28 2013-05-08 李彦 Novel near resonant double-mass linear vibrating screen
CN103394462A (en) * 2013-08-21 2013-11-20 成都西部石油装备有限公司 Screen frame and screen bed separated double-plastid near resonance screen

Also Published As

Publication number Publication date
CN103769364A (en) 2014-05-07

Similar Documents

Publication Publication Date Title
CN103769365B (en) A kind of vibratory sieve of novel motor synchronizing bi-motor installation form
CN202338042U (en) Suspension type anti-vibration partition wall
CN103769364B (en) A kind of resonance screens of novel motor synchronizing bi-motor installation form
CN103352957B (en) Vertical-type plate rack vibration isolation base
CN205798972U (en) A kind of electronic connector side boring grab
CN211018515U (en) Motor shock attenuation mounting bracket
CN203620933U (en) Horizontal vibrating sieve for material sieving
CN210374168U (en) Solar heat pump convenient to installation
CN108915114B (en) Drawknot type buckling-restrained steel-damper support
CN100438993C (en) Plate type static-indeterminant combination bearing beam oversize vibration screen
CN202175903U (en) Road roller and vibration damping device thereof
CN200995190Y (en) Super-large vibration sieve of excited-vibration plated combined bearing beam with double super-static netted beam
CN210358051U (en) Vibration motor vibration-participating beam of linear vibration sieve
CN203737570U (en) Improved resonance type vibrating screen
CN2628161Y (en) Vibrating screen vibration exciter
CN216225274U (en) Circular vibrating screen
CN203565337U (en) Novel linear dewatering vibrating screen
CN214033397U (en) Bridge prestressing force stretch-draw platform of preventing toppling
CN211538500U (en) Novel balanced granulated sugar shale shaker
CN201613224U (en) Improved punchy vibration sieve
CN215859348U (en) Shock-resistant steel structure workshop frame
CN212189962U (en) Seat type dish coupling vibration screening machine
CN111535196B (en) Bridge building templates link for civil engineering
CN212397236U (en) Bridge frame structure double-side complex frequency screen core
CN213727701U (en) Stable structure of screen box of linear vibrating screen of screen side vibration exciter

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
COR Change of bibliographic data
CB02 Change of applicant information

Address after: 610100 Chengdu economic and Technological Development Zone, Liuzhou Road, Sichuan, No. 1355

Applicant after: West of Chengdu petroleum equipment limited company

Address before: 610100 Sichuan city of Chengdu Province Economic and Technological Development Zone, Liuzhou Road No. 1335

Applicant before: Chengdu West Petroleum Equipment Co., Ltd.

C14 Grant of patent or utility model
GR01 Patent grant