CN108869226A - A kind of hand pump - Google Patents
A kind of hand pump Download PDFInfo
- Publication number
- CN108869226A CN108869226A CN201811020127.4A CN201811020127A CN108869226A CN 108869226 A CN108869226 A CN 108869226A CN 201811020127 A CN201811020127 A CN 201811020127A CN 108869226 A CN108869226 A CN 108869226A
- Authority
- CN
- China
- Prior art keywords
- frame
- adjustable shelf
- engaging portion
- protective frame
- buckle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000001681 protective effect Effects 0.000 claims abstract description 46
- 238000010586 diagram Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/14—Pumps characterised by muscle-power operation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a kind of hand pump, including the pump housing and rack, rack includes fixed frame and adjustable shelf, and adjustable shelf rotates with fixed frame and connect, and the pump housing is mutually fixedly connected with adjustable shelf；The fixed frame includes protective frame and falls and set frame, fall set frame with protective frame is perpendicular is fixedly connected, the adjustable shelf is set the one end of frame far from protective frame and is mutually rotatablely connected admittedly with falling, and after adjustable shelf is rotated towards the direction close to protective frame, the pump housing is between protective frame and adjustable shelf；It is described fall to set positioning component is equipped between frame and the adjustable shelf, adjustable shelf is rotated towards the direction close to the protective frame to after parallel with protective frame, and positioning component can limit adjustable shelf and rotate towards the direction close to or far from protective frame；It is an advantage of the current invention that rack can be supported fixed and protection to the pump housing, and it is easy to operate and laborsaving, convenient for storage and carry.
Description
Technical field
The present invention relates to pump technical fields, and in particular to a kind of hand pump.
Background technique
Hand pump is usually piston type, mainly includes ontology, piston rod, entrance and exit, and fluid (such as oil or water) passes through
Pipeline is connected with entrance, and reciprocating sliding piston rod can make the pressure of inlet keep below the pressure in exit, holds fluid
It is continuous to enter ontology from entrance and flow out ontology from outlet, realize the function of being pumped to fluid.
In general, hand pump piston stroke is bigger, the pump housing is set as long tubular, in the course of work, it usually needs by the pump housing
It is fixed using special clamp or is manually held with hand steered, the mode fixed with fixture is complicated for operation, artificial to help fixed need
At least two people are wanted to work at the same time (another person pushes and pulls piston rod), operation is laborious.
Summary of the invention
The embodiment of the present invention is designed to provide a kind of hand pump, difficult during the work time to solve existing hand pump
With fixed problem.
To achieve the above object, the technical solution of the embodiment of the present invention is：
A kind of hand pump, including the pump housing and rack, rack include fixed frame and adjustable shelf, and adjustable shelf rotates with fixed frame
Connection, the pump housing are mutually fixedly connected with adjustable shelf.
The embodiment of the present invention is further arranged to：The fixed frame includes protective frame and falls and set frame, falls and sets frame and protective frame
Perpendicular to be fixedly connected, the adjustable shelf is set the one end of frame far from protective frame and is mutually rotatablely connected admittedly with falling, and adjustable shelf is towards close to anti-
After the direction of retaining frame rotates, the pump housing is between protective frame and adjustable shelf.
The embodiment of the present invention is further arranged to：Described fall is set between frame and the adjustable shelf equipped with positioning component, activity
Frame is rotated towards the direction close to the protective frame to after parallel with protective frame, and positioning component can limit adjustable shelf towards far from protection
The direction of frame rotates.
The embodiment of the present invention is further arranged to：The positioning component includes the first buckle and the second buckle, the first buckle
It is mutually fixedly connected with the adjustable shelf, the second buckle rotates with the fixed frame to be connect；The is fixedly connected on first buckle
One engaging portion is fixedly connected with the second engaging portion on the second buckle, adjustable shelf towards the direction close to the protective frame rotate to
After protective frame is parallel, the first engaging portion is interlockingly connected with the second engaging portion.
The embodiment of the present invention is further arranged to：The positioning component further includes elastic component, wherein one end of elastic component with
The second buckle elastic connection, the other end of elastic component and the fixed frame phase elastic connection, second engaging portion is towards taking off
Direction from first engaging portion rotates post-tensioning elastic component.
The embodiment of the present invention is further arranged to：Lifting rod is fixedly connected on second buckle, the second buckle is opposite
It is located between lifting rod and second engaging portion in the rotation center of the fixed frame.
The embodiment of the present invention is further arranged to：The positioning component further includes locating piece, locating piece and the fixed frame
It is mutually fixedly connected, after first engaging portion is interlockingly connected with second engaging portion, the first fastening position is in the second engaging portion
Between locating piece, when the adjustable shelf continues rotation towards the direction close to the protective frame, locating piece and the first engaging portion phase
It abuts.
The embodiment of the present invention is further arranged to：Be rotatably connected to wind on the piston rod of hand pump, wind its
Middle one end is rotatably connected to crank, and the one end of crank far from wind rotates with the pump housing to be connect, wind and piston rod
The center of central axis and crank and pump housing relative rotation that central axis, wind and the crank of relative rotation relatively rotate
Axis is parallel to each other.
The embodiment of the present invention is further arranged to：It is detachable in the rack to be fixedly connected with splicing handle, splice hand
Wherein one end of handle can be plugged with the wind far from one end of the crank.
The embodiment of the present invention is further arranged to：The splicing handle includes L shape handle and T-handle, L shape handle and T
Shape handle respectively with the rack plug fixing.
The embodiment of the present invention has the following advantages that：
1, it when working, falls to set frame and fall and set on the ground or on workbench, towards the direction rotary moveable frame far from protective frame, make
Adjustable shelf is rotated to setting that frame is parallel, and adjustable shelf is abutted against with ground or table surface with falling, and fixed frame can carry out the pump housing
Support is fixed, and when by hand handle push-pull piston rod, the pump housing is less likely to occur to topple over, and does not need using additional fixture to the pump housing
It is fixed, does not also need to hold the pump housing, easy to operate, stable working with hand steered；
2, adjustable shelf is rotated to after parallel with protective frame, and for the pump housing between protective frame and adjustable shelf, protective frame can be right
The pump housing is protected, and prevents external object from colliding with the pump housing, convenient for being stored and being carried to the pump housing；
3, splicing handle can increase the torque arm length of wind after mutually splicing with wind, push and pull piston rod in the process more
It is laborsaving；
4, L shape handle and T-handle can increase the length of the wind arm of force, T shape hand respectively with wind plug fixing
Handle holds convenient for two hands；
5, when using hand pump on soil ground, L shape handle can be inserted into ground, compresses the bending part of L shape handle
It is set above frame falling, raising, which is fallen, sets frame and fall the stationarity set on the ground.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the status diagram embodied after the relatively fixed frame rotary expansion of adjustable shelf in the embodiment of the present invention；
Fig. 3 is the schematic diagram that rack construction is embodied in the embodiment of the present invention；
Fig. 4 is the schematic diagram that positioning component structure is embodied in the embodiment of the present invention；
Fig. 5 is the schematic diagram that wind and crank structure are embodied in the embodiment of the present invention.
Wherein,
1, the pump housing；11, wind；12, crank；13, piston rod；
2, rack；
21, fixed frame；211, protective frame；212, it falls and sets frame；
22, adjustable shelf；221, splice handle；2211, L shape handle；2212, T-handle；
23, positioning component；231, the first buckle；2311, the first engaging portion；232, the second buckle；2321, the second snapping
Portion；233, elastic component；234, lifting rod；235, locating piece.
Specific embodiment
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..
Embodiment
A kind of hand pump, as shown in Figure 1, including the pump housing 1 and rack 2, rack 2 includes fixed frame 21 and adjustable shelf 22, is lived
Moving frame 22 rotates with fixed frame 21 and connect, and the pump housing 1 is fixedly connected with 22 phase of adjustable shelf.Fixed frame 21 can prop up the pump housing 1
Support fix, do not need additional fixture fix or it is hand steered hold fixation, easy to operate, adjustable shelf 22 is rotated relative to fixed frame 21
The piston direction of changeable hand pump, convenient for operation.
In conjunction with Fig. 2, fixed frame 21 includes protective frame 211 and falls and set frame 212, falls that set frame 212 perpendicular solid with protective frame 211
Fixed connection, adjustable shelf 22 and falls and sets the one end of frame 212 far from protective frame 211 and be mutually rotatablely connected admittedly, and adjustable shelf 22 is towards close to protecting
After the direction of frame 211 rotates, the pump housing 1 is between protective frame 211 and adjustable shelf 22.Protective frame 211 can prevent the pump housing 1
Shield, stops other objects to collide with the pump housing 1, convenient for the pump housing 1 is saved and carried.
It when work, falls to set frame 212 and fall and set on ground or workbench, rotate mutual moving frame towards the direction far from protective frame 211
To adjustable shelf 22 with fall that set frame 212 parallel, fall set frame 212 and adjustable shelf 22 it is in the same plane and with ground or workbench
Surface abuts against, and the pump housing 1 is located at 22 top of adjustable shelf, and the pump housing 1 compresses adjustable shelf 22 on the ground under self gravitation effect,
Upward, during pushing piston rod 13, adjustable shelf 22 can increase the contact surface between the pump housing 1 and ground to the piston rod 13 of hand pump
Product, adjustable shelf 22 are supported the pump housing 1, improve the stationarity of the pump housing 1.During lifting piston rod 13, adjustable shelf 22 and solid
The self gravity for determining frame 21 can draw downwards the pump housing 1, improve the pump housing 1 and ground connective stability (can prevent the pump housing 1 by from
Lift on ground).
Positioning component 23 is equipped between frame 212 and adjustable shelf 22 as shown in figure 3, falling and setting, in conjunction with Fig. 4, positioning component 23 is wrapped
The first buckle 231 and the second buckle 232 are included, the first buckle 231 is fixedly connected with 22 phase of adjustable shelf, and second buckles 232 and fix
Frame 21 rotates connection, and the central axis and adjustable shelf 22 that the second buckle 232 is rotated relative to fixed frame 21 are relative to fixed frame
The central axis of 21 rotations is parallel；The first engaging portion 2311 is fixedly connected on first buckle 231, second buckles on 232 admittedly
Surely it is connected with the second engaging portion 2321, adjustable shelf 22 is rotated towards the direction close to protective frame 211 to parallel with protective frame 211
Afterwards, the first engaging portion 2311 is interlockingly connected with the second engaging portion 2321.
Positioning component 23 further includes elastic component 233, and elastic component 233 can be used spring or elastic string, in the present embodiment preferably
Using tension spring, wherein one end of elastic component 233 and the second 232 elastic connections of buckle, the second buckle 232 with fall that set frame 212 opposite
The central axis of rotation is located between elastic component 233 and the second 232 junctions of buckle and the second engaging portion 2321, elastic component
233 other end and 21 phase elastic connection of fixed frame, the second engaging portion 2321 are rotated towards the direction for being detached from the first engaging portion 2311
Post-tensioning elastic component 233.
First engaging portion 2311 and the second engaging portion 2321 are barb-like and direction on the contrary, the first engaging portion 2311 and
During the mutual snapping of two engaging portion 2321, the first engaging portion 2311 is first mutually abutted and is pushed away with the back side of the second engaging portion 2321
Dynamic second buckle, 232 rotation, meanwhile, elastic component 233 is gradually stretched, the second buckle 232 with fall set 212 relative rotation of frame until
After second engaging portion 2321 crosses the first engaging portion 2311, elastic component 233 is gradually recovered elastic deformation and shortens the second card of drive
232 revolution of button resets, and makes the first engaging portion 2311 and the mutual snapping of the second engaging portion 2321.
Second buckle 232 and the first buckle 231 are respectively provided with a pair, are equipped with lifting rod between two second buckles 232
234, the both ends of lifting rod 234 are fixedly connected with two second 232 phases of buckle respectively, and the second buckle 232 is relative to fixed frame 21
Rotation center be located between lifting rod 234 and the second engaging portion 2321.It can after the direction lifting for setting frame 212 towards separate fall with hand
It drives the second buckle 232 to rotate relative to fixed frame 21, is mutually disengaged the second engaging portion 2321 with the first engaging portion 2311.
Positioning component 23 further includes locating piece 235, and locating piece 235 is fixedly connected with 21 phase of fixed frame, the first engaging portion
2311 and second engaging portion 2321 be interlockingly connected after, the first engaging portion 2311 be located at the second engaging portion 2321 and locating piece 235 it
Between, when adjustable shelf 22 continues rotation towards the direction close to protective frame 211, locating piece 235 is abutted against with the first engaging portion 2311, limit
Adjustable shelf 22 processed continues to rotate towards the direction close to protective frame 211, after the first engaging portion 2311 is abutted against with locating piece 235,
Adjustable shelf 22 is parallel with protective frame 211.
As shown in figure 5, wind 11 is rotatably connected on the piston rod 13 of hand pump, wherein one end rotation of wind 11
It is connected with crank 12, the one end of crank 12 far from wind 11 rotates with the pump housing 1 to be connect, and wind 11 and piston rod 13 are opposite
Central axis and crank 12 and 1 relative rotation of the pump housing that central axis, wind 11 and the crank 12 of rotation relatively rotate
Central axis is parallel to each other, and wind 11, crank 12, the pump housing 1 and piston rod 13 constitute 12 slide block mechanism of crank (piston rod 13
Have the function of sliding block in 12 slide block mechanism of crank), hold with a hand the one end of wind 11 far from crank 12 and towards close or remote
Direction from the pump housing 1 pushes and pulls wind 11, and piston rod 13 can be driven to move back and forth the function for realizing pumping fluid relative to the pump housing 1
Energy.
Detachable in rack 2 to be fixedly connected with splicing handle 221, wherein one end of splicing handle 221 can be with wind
11 one end far from crank 12 plug.After splicing handle 221 is disassembled from rack 2, by splicing handle 221 and hand
Rocking handle 11 plugs, and increases the length of wind 11, increases the arm of force of wind 11, makes more to save during pushing and pulling wind 11
Power.
Splicing handle 221 includes L shape handle 2211 and T-handle 2212, and L shape handle 2211 and T-handle 2212 are distinguished
With 22 plug fixing of adjustable shelf.T-handle 2212 holds convenient for two hands, can be by L when using hand pump on soil ground
Shape handle 2211 is inserted into ground, and the bending part of L shape handle 2211 is made to be pressed on to fall and set above frame 212, and raising, which is fallen, sets frame 212 on ground
The stationarity set is fallen on face.
Preferably, protective frame 211, fall and set frame 212 and adjustable shelf 22 has hollow tube to be welded and fixed to connect and compose, protect
Frame 211 is rectangular frame structure, can reduce the overall weight of hand pump, reduces consumptive material, easy to carry.The rotation of adjustable shelf 22 to it is anti-
After retaining frame 211 is parallel, protective frame 211 falls and sets the rectangular parallelepiped structure that frame 212 and adjustable shelf 22 constitute hollow out, and the pump housing 1
On the inside of the rectangular parallelepiped structure of the hollow out, convenient for being stored and being carried to hand pump.
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements (as rack 2 is not limited to the pipe stated in attached drawing or in specification
Shape is rectangular box-like, can also use plate structure), this will be apparent to those skilled in the art.Therefore, not
These modifications or improvements on the basis of deviation spirit of that invention, fall within the scope of the claimed invention.
Claims (10)
1. a kind of hand pump, it is characterized in that：Including the pump housing (1) and rack (2), rack (2) includes fixed frame (21) and adjustable shelf
(22), adjustable shelf (22) rotates with fixed frame (21) and connect, and the pump housing (1) is mutually fixedly connected with adjustable shelf (22).
2. a kind of hand pump according to claim 1, it is characterized in that：The fixed frame (21) include protective frame (211) and
Fall and set frame (212), fall set frame (212) with protective frame (211) is perpendicular is fixedly connected, the adjustable shelf (22) and fall and set frame
(212) one end far from protective frame (211) is mutually rotatablely connected admittedly, and adjustable shelf (22) is rotated towards the direction close to protective frame (211)
Afterwards, the pump housing (1) is located between protective frame (211) and adjustable shelf (22).
3. a kind of hand pump according to claim 2, it is characterized in that：Described fall sets frame (212) and the adjustable shelf (22)
Between be equipped with positioning component (23), adjustable shelf (22) towards close to the protective frame (211) direction rotate to protective frame (211)
After parallel, positioning component (23) can limit adjustable shelf (22) and rotate towards the direction far from protective frame (211).
4. a kind of hand pump according to claim 3, it is characterized in that：The positioning component (23) includes the first buckle
(231) with second buckle (232), first buckle (231) is mutually fixedly connected with the adjustable shelf (22), second buckle (232) and
The fixed frame (21) rotates connection；It is fixedly connected with the first engaging portion (2311) on first buckle (231), the second buckle
(232) be fixedly connected on the second engaging portion (2321), adjustable shelf (22) towards close to the protective frame (211) direction rotate to
After parallel with protective frame (211), the first engaging portion (2311) is interlockingly connected with the second engaging portion (2321).
5. a kind of hand pump according to claim 4, it is characterized in that：The positioning component (23) further includes elastic component
(233), wherein one end of elastic component (233) and it is described second buckle (232) elastic connection, the other end of elastic component (233) with
Fixed frame (21) the phase elastic connection, second engaging portion (2321) is towards the direction for being detached from first engaging portion (2311)
It rotates post-tensioning elastic component (233).
6. a kind of hand pump according to claim 4, it is characterized in that：It is fixedly connected with and mentions on second buckle (232)
Pull rod (234), the second buckle (232) are located at lifting rod (234) and described the relative to the rotation center of the fixed frame (21)
Between two engaging portion (2321).
7. a kind of hand pump according to claim 4, it is characterized in that：The positioning component (23) further includes locating piece
(235), locating piece (235) is mutually fixedly connected with the fixed frame (21), first engaging portion (2311) and second button
After socket part (2321) is interlockingly connected, the first engaging portion (2311) is between the second engaging portion (2321) and locating piece (235), institute
When rotation is continued in the direction for stating adjustable shelf (22) towards close the protective frame (211), locating piece (235) and the first engaging portion
(2311) it abuts against.
8. a kind of hand pump according to claim 1, it is characterized in that：Hand is rotatably connected on the piston rod (13) of hand pump
Rocking handle (11), wherein one end of wind (11) are rotatably connected to crank (12), the one end of crank (12) far from wind (11)
Rotate and connect with the pump housing (1), central axis that wind (11) and piston rod (13) relatively rotate, wind (11) with
The central axis and crank (12) and the central axis of the pump housing (1) relative rotation that crank (12) relatively rotates are parallel to each other.
9. a kind of hand pump according to claim 8, it is characterized in that：It is detachable on the rack (2) to be fixedly connected with
Splice handle (221), the wherein one end for splicing handle (221) can be with the one end of the wind (11) separate the crank (12)
It plugs.
10. a kind of hand pump according to claim 9, it is characterized in that：The splicing handle (221) includes L shape handle
(2211) it is plugged respectively with the rack (2) admittedly with T-handle (2212), L shape handle (2211) and T-handle (2212)
It is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811020127.4A CN108869226B (en) | 2018-09-03 | 2018-09-03 | Light folding hand pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811020127.4A CN108869226B (en) | 2018-09-03 | 2018-09-03 | Light folding hand pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108869226A true CN108869226A (en) | 2018-11-23 |
| CN108869226B CN108869226B (en) | 2024-04-19 |
Family
ID=64322812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811020127.4A Active CN108869226B (en) | 2018-09-03 | 2018-09-03 | Light folding hand pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108869226B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4430924A (en) * | 1981-08-28 | 1984-02-14 | Hydrowell Sa | Petroleum pumping unit |
| CN2386211Y (en) * | 1999-07-29 | 2000-07-05 | 柳盛今 | Support lever type pedal inflator |
| CN201963514U (en) * | 2011-01-28 | 2011-09-07 | 成都万荣科技有限责任公司 | Portable folding inflator |
| CN202381275U (en) * | 2011-12-30 | 2012-08-15 | 中国人民解放军总后勤部油料研究所 | Portable type manual oil feeding pump |
| WO2013190287A1 (en) * | 2012-06-19 | 2013-12-27 | Hutton Technologies Ltd | Pump |
| CN203411315U (en) * | 2013-08-28 | 2014-01-29 | 北京三兴汽车有限公司 | Movable-type hand-operated oiling machine |
| CN104100515A (en) * | 2013-04-12 | 2014-10-15 | 中国人民解放军总后勤部油料研究所 | Foldable hand pump |
| CN209012007U (en) * | 2018-09-03 | 2019-06-21 | 北京神州港俄机电设备有限公司 | A kind of light collapsible hand pump |
-
2018
- 2018-09-03 CN CN201811020127.4A patent/CN108869226B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4430924A (en) * | 1981-08-28 | 1984-02-14 | Hydrowell Sa | Petroleum pumping unit |
| CN2386211Y (en) * | 1999-07-29 | 2000-07-05 | 柳盛今 | Support lever type pedal inflator |
| CN201963514U (en) * | 2011-01-28 | 2011-09-07 | 成都万荣科技有限责任公司 | Portable folding inflator |
| CN202381275U (en) * | 2011-12-30 | 2012-08-15 | 中国人民解放军总后勤部油料研究所 | Portable type manual oil feeding pump |
| WO2013190287A1 (en) * | 2012-06-19 | 2013-12-27 | Hutton Technologies Ltd | Pump |
| CN104100515A (en) * | 2013-04-12 | 2014-10-15 | 中国人民解放军总后勤部油料研究所 | Foldable hand pump |
| CN203411315U (en) * | 2013-08-28 | 2014-01-29 | 北京三兴汽车有限公司 | Movable-type hand-operated oiling machine |
| CN209012007U (en) * | 2018-09-03 | 2019-06-21 | 北京神州港俄机电设备有限公司 | A kind of light collapsible hand pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108869226B (en) | 2024-04-19 |
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