CN108130899A - A kind of Municipal Engineering Construction impacting type soil compression equipment - Google Patents

A kind of Municipal Engineering Construction impacting type soil compression equipment Download PDF

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Publication number
CN108130899A
CN108130899A CN201711160091.5A CN201711160091A CN108130899A CN 108130899 A CN108130899 A CN 108130899A CN 201711160091 A CN201711160091 A CN 201711160091A CN 108130899 A CN108130899 A CN 108130899A
Authority
CN
China
Prior art keywords
magnet
fixedly connected
cover body
gear
engineering construction
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.)
Pending
Application number
CN201711160091.5A
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Chinese (zh)
Inventor
祖象欢
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.)
Shenzhen Sheng Xiang Intellectual Property Ltd
Original Assignee
Shenzhen Sheng Xiang Intellectual Property 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 Shenzhen Sheng Xiang Intellectual Property Ltd filed Critical Shenzhen Sheng Xiang Intellectual Property Ltd
Priority to CN201711160091.5A priority Critical patent/CN108130899A/en
Publication of CN108130899A publication Critical patent/CN108130899A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02Improving by compacting
    • E02D3/046Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
    • E02D3/068Vibrating apparatus operating with systems involving reciprocating masses

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Agronomy & Crop Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Soil Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The invention discloses a kind of Municipal Engineering Construction impacting type soil compression equipment, including bottom plate, rack, cover body, connecting pole and soil hammer, the top of the bottom plate is fixedly connected with organic frame, the end of rack is fixedly connected with cover body, being internally provided with for cover body rotates disk, the lower part for rotating disk is provided with shock plate, shock plate is connected with disk is rotated by elastic telescopic device, the mobile lower surface for going to disk is fixedly connected with a pair of first magnet, the south magnetic pole of a pair of first magnet and magnetic north extreme direction are opposite, the upper surface of the shock plate is fixedly connected with a pair of second magnet;By the shock plate abrupt release of the elastic potential energy of the repulsive force and the first helical spring of the first magnet and the second magnet, soil hammer, which moves down, impacts soil, complete the suppressing action to soil, pressing force is larger, it is with obvious effects to soil packing, it improves to soil packing efficiency, saves the construction time, therefore this equipment has wide duration prospect.

Description

A kind of Municipal Engineering Construction impacting type soil compression equipment
Technical field
The present invention relates to municipal works field of mechanical technique, the impacting type soil compression of specifically a kind of Municipal Engineering Construction Equipment.
Background technology
Soil compression equipment is commonly used in building field, and with holding meanss, at the holding meanss, soil compression Equipment can be kept by user and movement.Holding meanss usually carry out elasticity by rubber torsion sleeve relative to top quality Buffering.Accordingly, for being grasped for the holding meanss of frame, generate and transported up and down by the parallel-moving type of soil compaction device The superimposed motion that the rotational motion of pivot center dynamic and around torsionspring is formed.This movement is corresponded approximately to around base The rotation of point, the basic point are located at the immediate vicinity of holding meanss.If grasping position of the center of gravity far from user, this is being used The large magnitude of holding meanss is generated at the practical grasping position of person.
Existing soil compression equipment, it is larger due to vibrating, make user more laborious when helping, and due to knot Limitation on structure, the impact force of compacting is smaller, is restricted efficiency of compaction, reduces construction efficiency.
Invention content
The purpose of the present invention is to provide a kind of Municipal Engineering Construction impacting type soil compression equipment, to solve the above-mentioned back of the body The problem of being proposed in scape technology.
To achieve the above object, the present invention provides following technical solution:
A kind of Municipal Engineering Construction impacting type soil compression equipment, including bottom plate, rack, cover body, connecting pole and soil hammer, The top of the bottom plate is fixedly connected with organic frame, and the end of rack is fixedly connected with cover body, and cover body is internally provided with mobile turn Moving plate, the lower part for rotating disk are provided with shock plate, and shock plate is connected with disk is rotated by elastic telescopic device, move The lower surface of turn to disk is fixedly connected with a pair of first magnet, south magnetic pole and the magnetic north extreme direction of a pair of first magnet on the contrary, The upper surface of the shock plate is fixedly connected with a pair of second magnet, a pair of south magnetic pole of second magnet and magnetic north extreme direction phase Instead, the upside wall body of the cover body is rotatably connected to hollow cylinder, and being passed through in hollow cylinder has shaft, the surface of shaft and hollow cylinder Inner wall is connected by flat key with keyway, and intermittent drive device is equipped on the cover body, and the output terminal of intermittent drive device is consolidated Surely the first Rotational Cylindrical is connected with, the top of the shaft is provided with cam, and first Rotational Cylindrical passes through the mounting hole of cam, and First Rotational Cylindrical is fixedly connected with the first drive bevel gear and the second drive bevel gear, and the engagement of the first drive bevel gear is connected with the One driven wheel of differential, is fixedly connected with driven gear on the hollow cylinder, and driven gear engagement is connected with driving gear, first from Dynamic bevel gear is connected by transmission shaft with driving gear, and the engagement of the second drive bevel gear is connected with the second driven wheel of differential, institute The circumferencial direction activity of faceshield side wall is stated through there are several limited posts, the end of the limited post outside cover body is fixedly connected with Third magnet is rotatably connected to turning set on the surface of cover body, and third magnet is located in turning set, the magnetic of adjacent third magnet The South Pole and magnetic north extreme direction are on the contrary, the inner wall of turning set is fixedly connected with several positions and corresponding 4th magnetic of third magnet Iron, the south magnetic pole of the 4th adjacent magnet and magnetic north extreme direction unwrapping wire, the circumferential end surfaces of turning set integrally formed with circumference straight-tooth, The engagement of circumference straight-tooth is connected with spur gear, and second driven wheel of differential is mutually fixedly connected by transmission shaft with spur gear, described The lower surface of shock plate is fixedly connected with connecting pole, and the bottom end of connecting pole is fixedly connected with soil hammer.
As further embodiment of the present invention:The elastic telescopic device includes the set for being fixedly connected on shock plate upper surface Cylinder, the first helical spring for being arranged on sleeve inner, the piston plate positioned at sleeve inner and the first helical spring top, fixed company It is connected on piston plate upper face and activity runs through the portable pillar of sleeve, the top of portable pillar is with rotating disk mutually fixed company It connects.
As further scheme of the invention:The intermittent drive device includes the protection being fixedly connected on cover body Case, the motor on cover body, is fixedly connected on outside geneva mechanism output terminal at the outside geneva mechanism being arranged on inside protective housing Gear wheel and the pinion gear that is engaged with gear wheel, the output terminal of motor be mutually fixedly connected with the input terminal of outside geneva mechanism, greatly The number of teeth of gear is twice of the number of teeth of pinion gear, and extended outside protective housing is fixedly connected in the mounting hole of pinion gear One Rotational Cylindrical.
As further scheme of the invention:Ring is fixedly connected with positioned at the surface of the cover body of turning set upper and lower sides Shape limiting plate.
As further scheme of the invention:The second helical spring, the second helical spring are socketed on the gag lever post Two connecting pins be in contact respectively with third magnet and cover body.
As further scheme of the invention:The length of the keyway is more than flat key length.
As further scheme of the invention:First magnet and the second magnet are ndfeb magnet.
As further scheme of the invention:The hollow cylinder is by being passed through the installation of the bearing on cover body Hole.
As further scheme of the invention:The third magnet and the 4th magnet are ndfeb magnet.
As further scheme of the invention:The lower surface of the bottom plate is equipped with the castor with brake.
Compared with prior art, the beneficial effects of the invention are as follows:By the first magnet and the repulsive force and of the second magnet The shock plate abrupt release of the elastic potential energy of one helical spring, soil hammer, which moves down, impacts soil, completes the pushing to soil Effect, pressing force is larger, with obvious effects to soil packing, improves to soil packing efficiency, saves the construction time, because This this equipment has wide duration prospect.
Description of the drawings
Fig. 1 is a kind of structure diagram of Municipal Engineering Construction impacting type soil compression equipment;
Fig. 2 is the appearance schematic diagram of the Municipal Engineering Construction impacting type soil compression equipment described in Fig. 1;
Schematic cross-sectional views of the Fig. 3 for line A-A in the Municipal Engineering Construction impacting type soil compression equipment described in Fig. 1;
Schematic cross-sectional views of the Fig. 4 for line A-A in the Municipal Engineering Construction impacting type soil compression equipment described in Fig. 1;
Structure diagrams of the Fig. 5 for telescopic device elastic in the Municipal Engineering Construction impacting type soil compression equipment described in Fig. 1.
Specific embodiment
The technical solution of this patent is described in more detail With reference to embodiment.
- 5 are please referred to Fig.1, a kind of Municipal Engineering Construction impacting type soil compression equipment, including bottom plate 1, rack 2, cover body 4th, connecting pole 31 and soil hammer 32, the top of the bottom plate 1 are fixedly connected with organic frame 2, and the end of rack 2 is fixedly connected with cover Body 4, being internally provided with for cover body 4 rotate disk 13, and the lower part for rotating disk 13 is provided with shock plate 14,14 He of shock plate It rotates disk 13 by elastic telescopic device to be connected, the mobile lower surface for going to disk 13 is fixedly connected with a pair of first magnet 15, the south magnetic pole of a pair of first magnet 15 and magnetic north extreme direction are on the contrary, the upper surface of the shock plate 14 is fixedly connected with a pair Second magnet 16, south magnetic pole and the magnetic north extreme direction of a pair of second magnet 16 are on the contrary, the upside wall body rotation connection of the cover body 4 There is hollow cylinder 21, being passed through in hollow cylinder 21 has shaft 22, and 22 surfaces of shaft and the inner wall of hollow cylinder 21 pass through flat key and keyway It is connected, intermittent drive device is installed on the cover body 4, the output terminal of intermittent drive device is fixedly connected with the first Rotational Cylindrical 10, the top of the shaft 22 is provided with cam 23, and first Rotational Cylindrical 10 passes through 23 mounting holes of cam, and the first rotation Column 10 is fixedly connected with the first drive bevel gear 11 and the second drive bevel gear 24, and the engagement of the first drive bevel gear 11 is connected with the One driven wheel of differential 12, driven gear 20 is fixedly connected on the hollow cylinder 21, and the engagement of driven gear 20 is connected with driving tooth Wheel 19, the first driven wheel of differential 11 is connected by transmission shaft with driving gear 19, and the engagement of the second drive bevel gear 24 is connected with Second driven wheel of differential 25, the circumferencial direction activity of 4 side wall of cover body, which runs through, several limited posts 26, outside cover body 4 The end of limited post 26 be fixedly connected with third magnet 28, cover and be rotatably connected to turning set 27, third magnet on the surface of 4 bodies 28 are located in turning set 27, and south magnetic pole and the magnetic north extreme direction of adjacent third magnet 28 are on the contrary, the inner wall of turning set 27 is fixed It is connected with several positions and 28 corresponding 4th magnet 29 of third magnet, the south magnetic pole and magnetic north pole of the 4th adjacent magnet 29 Direction unwrapping wire, for the circumferential end surfaces of turning set 27 integrally formed with circumference straight-tooth, the engagement of circumference straight-tooth is connected with spur gear 30, described Second driven wheel of differential 25 is fixedly connected by transmission shaft with 30 phase of spur gear, and the lower surface of the shock plate 14 is fixedly connected with Connecting pole 31, the bottom end of connecting pole 31 are fixedly connected with soil hammer 32.
The elastic telescopic device includes being fixedly connected on the sleeve 17 of 14 upper surface of shock plate, be arranged on inside sleeve 17 The first helical spring, positioned at the inside of sleeve 17 and the first helical spring top piston plate, be fixedly connected on piston plate top Surface and activity run through the portable pillar 18 of sleeve, and the top of portable pillar 18 is fixedly connected with rotating 13 phase of disk.
The intermittent drive device include be fixedly connected on cover body 4 protective housing 6, be arranged on protective housing 6 inside outside Geneva mechanism 7, the motor 5 on cover body 4, the gear wheel 8 and and gear wheel for being fixedly connected on 4 output terminal of outside geneva mechanism The pinion gear 9 of 8 engagements, the output terminal of motor 5 are mutually fixedly connected with the input terminal of outside geneva mechanism 7, and the number of teeth of gear wheel 8 is small Twice of the number of teeth of gear 9 is fixedly connected with the first Rotational Cylindrical 10 extended outside protective housing 6 in the mounting hole of pinion gear 9.
Annular stop plate 33 is fixedly connected with positioned at the surface of the cover body 4 of 27 upper and lower sides of turning set.
Be socketed with the second helical spring on the gag lever post 26, two connecting pins of the second helical spring respectively with third magnet 28 and cover body 4 be in contact.
The length of the keyway is more than flat key length.
First magnet, 15 and second magnet 16 is ndfeb magnet.
The hollow cylinder 21 is by being passed through the mounting hole of the bearing on cover body 4.
28 and the 4th magnet 29 of third magnet is ndfeb magnet.
The lower surface of the bottom plate 1 is equipped with the castor 3 with brake.
Operation principle:After motor driving, by the effect of outside geneva mechanism 7, the intermittent rotary that gear wheel 8 is made to do 90 °, and Pinion gear 9 carries out 180 ° of intermittent rotary afterwards, by the first drive bevel gear 11, the first driven wheel of differential 12, driving gear 19 and the gearing of driven gear 20, the intermittent rotary that hollow cylinder 21 is made to do 180 ° rotates disk 13 and does so as to drive 180 ° of intermittent rotary, at the same time, cam 23 equally do 180 ° of intermittent rotary, due to the effect of elastic telescopic device, turn Axis 22 is reciprocal to be moved up and down, therefore during primary intermittent rotary, is produced and is rotated 180 ° of the rotation of disk 13 The process also moved down simultaneously, the at this time south magnetic pole of corresponding first magnet 15 and the magnetic of magnetic north pole and the second magnet 16 up and down The South Pole and magnetic north extreme direction on the contrary, and in elastic telescopic device the first helical spring compression, therefore rotate disk 13 and punching It hits between plate 14 and has saved bit by bit the repulsive force of the first magnet 15 and the second magnet 16 and the elastic potential energy of the first helical spring, and at this Secondary intermittent rotary started into the time of completion, and limited post 26 has carried out following action:When intermittent rotary starts, at this time relatively Therefore the south magnetic pole for the third magnet 28 answered and the south magnetic pole and magnetic north extreme direction of magnetic north pole and the 4th magnet 29 are on the contrary, mutually arrange Reprimand, so as to which limited post persistently limits shock plate 14, when intermittent rotary completes the moment of contact, at this time corresponding third magnet 28 south magnetic pole and the south magnetic pole of magnetic north pole and the 4th magnet 29 are identical with magnetic north extreme direction, 28 and the 4th magnet 29 of third magnet It attracts each other, limited post 26 is made to be retracted back in turning set 27, at this point, by the first magnet 15 and the repulsive force of the second magnet 15 With the shock plate abrupt release of the elastic potential energy of the first helical spring, soil hammer 32, which moves down, impacts soil, completes to soil Suppressing action, pressing force is larger, with obvious effects to soil packing, improves to soil packing efficiency, saves construction Time, therefore this equipment has wide duration prospect, and when intermittent rotary completes a process again, the tip court of cam 23 To upside, and the first magnet 15 and the second magnet 16 attract each other, and shock plate 14, which resets, is located at upside, and limited post 26 resets, soil Earth hammer 32 resets, to treat next impact cycle.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " setting ", " phase Even " and " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected; It can be directly connected, can also be indirectly connected by intermediary, can be the connection inside two elements.For this field Those of ordinary skill for, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
It is obvious to a person skilled in the art that the present invention is not limited to the details of above-mentioned exemplary embodiment, Er Qie In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power Profit requirement rather than above description limit, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims Variation is included within the present invention, and any reference numeral in claim should not be considered as to the involved claim of limitation.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in each embodiment can also be properly combined, forms those skilled in the art The other embodiment being appreciated that.

Claims (8)

1. a kind of Municipal Engineering Construction impacting type soil compression equipment, including bottom plate, rack, cover body, connecting pole and soil pressure Hammer, which is characterized in that the top of the bottom plate is fixedly connected with organic frame, and the end of rack is fixedly connected with cover body, cover body it is interior Portion, which is provided with, rotates disk, and the lower part for rotating disk is provided with shock plate, shock plate and rotates disk and is stretched by elasticity Compression apparatus is connected, and the mobile lower surface for going to disk is fixedly connected with a pair of first magnet, the south magnetic pole of a pair of first magnet and Magnetic north extreme direction is on the contrary, the upper surface of the shock plate is fixedly connected with a pair of second magnet, the south magnetic pole of a pair of second magnet With magnetic north extreme direction on the contrary, the upside wall body of the cover body is rotatably connected to hollow cylinder, being passed through in hollow cylinder has shaft, shaft Surface is connected with the inner wall of hollow cylinder by flat key with keyway, and intermittent drive device, intermittent driving are equipped on the cover body The output terminal of device is fixedly connected with the first Rotational Cylindrical, and the top of the shaft is provided with cam, and first Rotational Cylindrical passes through The mounting hole of cam, and the first Rotational Cylindrical is fixedly connected with the first drive bevel gear and the second drive bevel gear, the first initiative taper Gear engagement is connected with the first driven wheel of differential, and driven gear, driven gear engagement connection are fixedly connected on the hollow cylinder There is driving gear, the first driven wheel of differential is connected by transmission shaft with driving gear, and the engagement of the second drive bevel gear is connected with Second driven wheel of differential, the circumferencial direction activity of the faceshield side wall, which runs through, several limited posts, the limiting outside cover body The end of column is fixedly connected with third magnet, and turning set is rotatably connected on the surface of cover body, and third magnet is located in turning set, South magnetic pole and the magnetic north extreme direction of adjacent third magnet are on the contrary, the inner wall of turning set is fixedly connected with several positions and third magnetic Corresponding 4th magnet of iron phase, the south magnetic pole of the 4th adjacent magnet and magnetic north extreme direction unwrapping wire, the circumferential end surfaces one of turning set Body formed to have circumference straight-tooth, the engagement of circumference straight-tooth is connected with spur gear, and second driven wheel of differential passes through transmission shaft and straight-tooth Wheel is mutually fixedly connected, and the lower surface of the shock plate is fixedly connected with connecting pole, and the bottom end of connecting pole is fixedly connected with soil pressure Hammer;The elastic telescopic device includes being fixedly connected on the sleeve of shock plate upper surface, being arranged on the first spiral of sleeve inner Spring, positioned at sleeve inner and the first helical spring top piston plate, be fixedly connected on piston plate upper face and activity is passed through The portable pillar of sleeve is pierced by, the top of portable pillar is mutually fixedly connected with rotating disk;The intermittent drive device includes fixing The protective housing that is connected on cover body, the motor on cover body, is fixedly connected the outside geneva mechanism being arranged on inside protective housing Gear wheel and the pinion gear that is engaged with gear wheel in outside geneva mechanism output terminal, the output terminal of motor and outside geneva mechanism it is defeated Enter end to be mutually fixedly connected, the number of teeth of gear wheel is twice of the number of teeth of pinion gear, is fixedly connected with and prolongs in the mounting hole of pinion gear Stretch out the first Rotational Cylindrical outside protective housing.
2. Municipal Engineering Construction according to claim 1 impacting type soil compression equipment, which is characterized in that positioned at rotation The surface for covering the cover body of upper and lower sides is fixedly connected with annular stop plate.
3. Municipal Engineering Construction according to claim 1 impacting type soil compression equipment, which is characterized in that the limiting The second helical spring is socketed on bar, two connecting pins of the second helical spring are in contact respectively with third magnet and cover body.
4. Municipal Engineering Construction according to claim 1 impacting type soil compression equipment, which is characterized in that the keyway Length be more than flat key length.
5. Municipal Engineering Construction according to claim 1 impacting type soil compression equipment, which is characterized in that described first Magnet and the second magnet are ndfeb magnet.
6. Municipal Engineering Construction according to claim 1 impacting type soil compression equipment, which is characterized in that described hollow Cylinder is by being passed through the mounting hole of the bearing on cover body.
7. Municipal Engineering Construction according to claim 1 impacting type soil compression equipment, which is characterized in that the third Magnet and the 4th magnet are ndfeb magnet.
8. Municipal Engineering Construction according to claim 1 impacting type soil compression equipment, which is characterized in that the bottom plate Lower surface be equipped with brake castor.
CN201711160091.5A 2017-11-20 2017-11-20 A kind of Municipal Engineering Construction impacting type soil compression equipment Pending CN108130899A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711160091.5A CN108130899A (en) 2017-11-20 2017-11-20 A kind of Municipal Engineering Construction impacting type soil compression equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711160091.5A CN108130899A (en) 2017-11-20 2017-11-20 A kind of Municipal Engineering Construction impacting type soil compression equipment

Publications (1)

Publication Number Publication Date
CN108130899A true CN108130899A (en) 2018-06-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711160091.5A Pending CN108130899A (en) 2017-11-20 2017-11-20 A kind of Municipal Engineering Construction impacting type soil compression equipment

Country Status (1)

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CN (1) CN108130899A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111804042A (en) * 2020-07-20 2020-10-23 宋卫校 Sewage pretreatment equipment for sewage treatment plant

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2792554A1 (en) * 1999-04-22 2000-10-27 Vibrachoc Sa Vibration generator for motor vehicle has main mass and spring and auxiliary mass and spring to provide double resonant frequency
CN101067296A (en) * 2007-05-24 2007-11-07 张文彦 Magnetic beater
CN202139583U (en) * 2011-05-30 2012-02-08 黄道兴 Electromagnet rammer compactor
CN107296735A (en) * 2017-07-26 2017-10-27 袁润栋 A kind of medical condition prophylactic treatment unidirectional drive manual massage device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2792554A1 (en) * 1999-04-22 2000-10-27 Vibrachoc Sa Vibration generator for motor vehicle has main mass and spring and auxiliary mass and spring to provide double resonant frequency
CN101067296A (en) * 2007-05-24 2007-11-07 张文彦 Magnetic beater
CN202139583U (en) * 2011-05-30 2012-02-08 黄道兴 Electromagnet rammer compactor
CN107296735A (en) * 2017-07-26 2017-10-27 袁润栋 A kind of medical condition prophylactic treatment unidirectional drive manual massage device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111804042A (en) * 2020-07-20 2020-10-23 宋卫校 Sewage pretreatment equipment for sewage treatment plant

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Application publication date: 20180608

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