CN113500566A - Knocking hammer used in narrow space - Google Patents
Knocking hammer used in narrow space Download PDFInfo
- Publication number
- CN113500566A CN113500566A CN202110961827.9A CN202110961827A CN113500566A CN 113500566 A CN113500566 A CN 113500566A CN 202110961827 A CN202110961827 A CN 202110961827A CN 113500566 A CN113500566 A CN 113500566A
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- China
- Prior art keywords
- hammer
- rotating roller
- hammer shell
- base body
- shell base
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- 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.)
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- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 230000000694 effects Effects 0.000 claims abstract description 10
- 238000003860 storage Methods 0.000 claims description 20
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 6
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 6
- 241001330002 Bambuseae Species 0.000 claims description 6
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 6
- 239000011425 bamboo Substances 0.000 claims description 6
- 239000010962 carbon steel Substances 0.000 claims description 6
- 230000005389 magnetism Effects 0.000 claims description 4
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 238000004080 punching Methods 0.000 abstract description 3
- 239000002184 metal Substances 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D1/00—Hand hammers; Hammer heads of special shape or materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D1/00—Hand hammers; Hammer heads of special shape or materials
- B25D1/005—Hand hammers; Hammer heads of special shape or materials with nail feeding devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D1/00—Hand hammers; Hammer heads of special shape or materials
- B25D1/02—Inserts or attachments forming the striking part of hammer heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D1/00—Hand hammers; Hammer heads of special shape or materials
- B25D1/04—Hand hammers; Hammer heads of special shape or materials with provision for withdrawing or holding nails or spikes
- B25D1/06—Magnetic holders
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
The invention belongs to the technical field of practical tools, and particularly relates to a knocking hammer for a narrow space. The first roller that changes that its surface set up when bent axle form transmission shaft rotates, the roller is changeed to the second, the roller is changeed to the third and the fourth is changeed the roller and is rotated in proper order to contact with the activity foundation column to the realization carries out the punching press effect on the different vertical height to the activity foundation column, finally fixes the nail completely to the object surface, is difficult to the problem of exerting oneself in narrow and small space to traditional hammer handle is longer, thereby effectual solution is difficult to the problem of inserting the object with the nail in narrow and small space.
Description
Technical Field
The invention belongs to the technical field of practical tools, and particularly relates to a knocking hammer used in a narrow space.
Background
The hammer is a comparatively common processing apparatus, be used for beating or the processing operation of nailing more, the structure is comparatively simple, high durability and convenient use, the hammer is according to service environment or processing material's difference, still extend the hammer of making by different materials, for example, the rubber hammer, nipple point hammer and claw hammer etc. however, current hammer need utilize the hammer handle to strike the object, conveniently exert oneself, however, some narrow and small spaces can appear in the real life, traditional hammer can't be exerted and exerted oneself, the problem that can't fix the nail in narrow environment has been led to.
Disclosure of Invention
To solve the problems set forth in the background art described above. The invention provides a knocking hammer for a narrow space, which solves the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a strike hammer for narrow and small space uses, including hammer shell base member, the notch has been seted up to the periphery of hammer shell base member, the internal fixed surface of notch installs anti-skidding rubber pad, the periphery that anti-skidding rubber pad one side was kept away from to hammer shell base member evenly has seted up four fingers and indicates the groove, the last fixed surface of anti-skidding rubber pad top hammer shell base member installs control switch, the edge fixed mounting on hammer shell base member top has the fixed mounting bed frame, the bottom fixed mounting of fixed mounting bed frame has the motor, the below fixed mounting that hammer shell base member one end was kept away from to the motor has the arc backing plate, the output that the motor is close to hammer shell base member one end passes hammer shell base member and fixed mounting has bent axle form transmission shaft through the flange, the one end that the motor was kept away from to bent axle form transmission shaft is connected with hammer shell base member inner wall rotation.
Preferably, a first rotating roller, a second rotating roller, a third rotating roller and a fourth rotating roller are movably mounted between the left end and the right end of the crankshaft-shaped transmission shaft in sequence, the distances between the respective axial leads of the first rotating roller, the second rotating roller, the third rotating roller and the fourth rotating roller and the axial lead of the crankshaft-shaped transmission shaft are sequentially increased, the included angles formed by the second rotating roller, the third rotating roller and the fourth rotating roller and the vertical direction of the first rotating roller are sequentially increased, a movable base column is arranged under the crankshaft-shaped transmission shaft and is in sliding connection with the inner wall of the hammer shell base body, four arc-shaped convex blocks are fixedly mounted on the upper surface of the movable base column, a main support column is fixedly mounted at the bottom end of the movable base column, a carbon steel pad is fixedly mounted at the bottom end of the main support column, a plurality of springs are arranged on the lower surface of the movable base column around the main support column, the upper end and the lower end of each spring are fixedly connected with the lower surface of the movable base column and the inner bottom surface of the hammer shell base body respectively, the nail storage barrel is arranged under the movable foundation column, a plurality of connecting blocks are uniformly and fixedly mounted on the circumferential surface of the nail storage barrel, the nail storage barrel is fixedly connected with the inner wall of the hammer shell base body through the plurality of connecting blocks, a plurality of arc-shaped magnetic blocks are fixedly mounted on the inner circumferential surface of the nail storage barrel, and an annular conical guide block is arranged under the arc-shaped magnetic blocks.
Preferably, the inside of the hammer shell base body is of a hollow structure, a round through hole is formed in the bottom end of the hammer shell base body, and the hammer shell base body and the movable base column are arranged in a concentric structure.
Preferably, the radius of the top end of the movable foundation column is larger than that of the bottom end of the movable foundation column, and the radius of the top end of the movable foundation column is smaller than that of the hollow structure in the hammer shell base body.
Preferably, the radius of the circular through hole formed in the nail storage cylinder is larger than that of the main support column, and the radius of the bottom end of the carbon steel pad is completely matched with the structural size and position of the radius of the circular through hole formed in the nail storage cylinder in a corresponding mode.
Preferably, the crankshaft-shaped transmission shaft is positioned right above the four arc-shaped convex blocks, and the opening radius of the top end of the annular conical guide block is larger than that of the bottom end of the annular conical guide block.
Compared with the prior art, the invention has the beneficial effects that:
1. the knocking hammer for the narrow space is characterized in that a hammer shell base body, a crankshaft-shaped transmission shaft and a movable base post are arranged, nails to be fixed are placed in a nail storage cylinder, magnetic adsorption and fixation are carried out on metal nails through the magnetism of an arc-shaped magnetic block in the nail storage cylinder, meanwhile, the hammer shell base body is held by a single hand, the bottom end of the hammer shell base body is placed at the position where the nails are needed, a motor is started to rotate at a constant speed through a pressing control switch, the motor rotates to drive the crankshaft-shaped transmission shaft to rotate, a first rotating roller, a second rotating roller, a third rotating roller and a fourth rotating roller which are arranged on the surface of the crankshaft-shaped transmission shaft when the crankshaft-shaped transmission shaft rotates sequentially rotate to be in contact with the movable base post, the punching effect on the movable base post at different vertical heights is achieved, the nails are finally and completely fixed on the surface of an object, and the problem that a traditional hammer handle is long and difficult to exert force in the narrow space is solved, thereby effectual solution is difficult to insert the problem of object with the nail in narrow and small space.
2. This a strike hammer for narrow and small space uses can be when knocking the object surface with the nail through storing up a nail section of thick bamboo, stores up a nail section of thick bamboo bottom and can laminate mutually with the object surface, when the nail received external force and object surface contact, effectually prevents that the nail pointed end from assaulting the problem that causes the piece to splash with the object surface.
3. This a strike hammer for narrow and small space uses leads positive piece through arc magnetic block and cyclic annular toper through the setting, can advance magnetic adsorption to metal nail through using arc magnetic block and use, utilizes cyclic annular toper to lead positive piece simultaneously to be used for leading the effect of just using to the nail bottom, and the effectual nail that prevents produces the bending that the slope caused the nail with the object surface.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic perspective view of a first embodiment of the present invention;
FIG. 2 is a schematic perspective view of a second embodiment of the present invention;
FIG. 3 is a third perspective view of the present invention;
FIG. 4 is a schematic cross-sectional view of a first three-dimensional structure of the present invention;
FIG. 5 is a schematic diagram of a formal cross-sectional structure of the present invention;
FIG. 6 is a schematic view of a portion of the structure shown in FIG. 4A according to the present invention.
Wherein, 1 hammer shell basal body, 2 antiskid rubber pads, 3 finger grooves, 4 control switches, 5 fixed installation bed frames, 6 motors, 7 arc-shaped backing plates, 8 crankshaft-shaped transmission shafts, 9 first rotating rollers, 10 second rotating rollers, 11 third rotating rollers, 12 fourth rotating rollers, 13 movable foundation columns, 14 arc-shaped convex blocks, 15 main support columns, 16 connecting blocks, 17 springs, 18 carbon steel pads, 19 arc-shaped magnetic blocks and 20 annular conical guide blocks; 21 storing the nail barrel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides the following technical solutions: a knocking hammer used in a narrow space comprises a hammer shell base body 1, a notch is formed in the circumferential surface of the hammer shell base body 1, an anti-skidding rubber pad 2 is fixedly installed on the inner surface of the notch, four finger grooves 3 are uniformly formed in the circumferential surface of one side, away from the anti-skidding rubber pad 2, of the hammer shell base body 1, the notch is used for being attached to a palm center when being held by a hand, the anti-skidding rubber pad 2 can effectively achieve the using effect of increasing friction force in an anti-skidding mode, the four finger grooves 3 are used for being attached to fingers of an operator, a control switch 4 is fixedly installed on the upper surface of the hammer shell base body 1 above the anti-skidding rubber pad 2, the control switch 4 controls starting and stopping of a motor 6 through electrical connection, a fixedly installed base frame 5 is fixedly installed at the edge of the top end of the hammer shell base body 1, the motor 6 is fixedly installed at the bottom end of the fixedly installed base frame 5, an arc-shaped backing plate 7 is fixedly installed below one end, away from the hammer shell base body 1, of the motor 6, the arc-shaped backing plate 7 is used for preventing a handheld part from directly contacting with the motor 6, the output end of one end of the motor 6 close to the hammer shell base body 1 penetrates through the hammer shell base body 1 through a flange and is fixedly provided with a crankshaft-shaped transmission shaft 8, one end of the crankshaft-shaped transmission shaft 8 far away from the motor 6 is rotatably connected with the inner wall of the hammer shell base body 1, a first rotating roller 9, a second rotating roller 10, a third rotating roller 11 and a fourth rotating roller 12 are sequentially and movably arranged between the left end and the right end of the crankshaft-shaped transmission shaft 8, the distances between the respective axial leads of the first rotating roller 9, the second rotating roller 10, the third rotating roller 11 and the fourth rotating roller 12 and the axial lead of the crankshaft-shaped transmission shaft 8 are sequentially increased, included angles formed by the second rotating roller 10, the third rotating roller 11 and the fourth rotating roller 12 and the first rotating roller 9 in the vertical direction are sequentially increased, a movable base column 13 is arranged right below the crankshaft-shaped transmission shaft 8, and the inside of the hammer shell base body 1 is of a hollow structure, the bottom end of the hammer shell base body 1 is provided with a circular through hole, the hammer shell base body 1 and the movable base column 13 are arranged in a concentric structure, the movable base column 13 is connected with the inner wall of the hammer shell base body 1 in a sliding mode, the radius of the top end of the movable base column 13 is larger than the radius of the bottom end of the movable base column, the radius of the top end of the movable base column 13 is smaller than the radius of a hollow structure in the hammer shell base body 1, four arc-shaped convex blocks 14 are fixedly installed on the upper surface of the movable base column 13, a crankshaft-shaped transmission shaft 8 is positioned right above the four arc-shaped convex blocks 14, a main support column 15 is fixedly installed at the bottom end of the movable base column 13, a steel pad 18 is fixedly installed at the bottom end of the main support column 15, a plurality of springs 17 are arranged on the lower surface of the movable base column 13 around the main support column 15, the upper ends and the lower ends of the plurality of springs 17 are respectively fixedly connected with the lower surface of the movable base column 13 and the inner bottom surface of the hammer shell base body 1, a nail storage barrel 21 is arranged right below the movable base column 13, the radius of a circular through hole formed in the nail storage barrel 21 is larger than the radius of the main support column 15, the radius of the bottom end of a carbon steel pad 18 is completely matched with the structural size and the position of the radius of the circular through hole formed in the nail storage barrel 21 in a corresponding mode, a plurality of connecting blocks 16 are uniformly and fixedly installed on the circumferential surface of the nail storage barrel 21, the nail storage barrel 21 is fixedly connected with the inner wall of the hammer shell base body 1 through the connecting blocks 16, nails to be fixed are placed in the nail storage barrel 21, the metal nails are magnetically adsorbed and fixed through the magnetism of an arc-shaped magnetic block 19 in the nail storage barrel 21, meanwhile, the hammer shell base body 1 is held by one hand, the bottom end of the hammer shell base body 1 is placed at the position where the nails are to be fixed, the motor 6 is started to rotate at a constant speed through pressing of a control switch 4, the motor 6 rotates to drive a crankshaft-shaped transmission shaft 8 to rotate, and a first rotating roller 9, a second rotating roller, a third rotating roller, a fourth roller, the second rotating roller 10, the third rotating roller 11 and the fourth rotating roller 12 sequentially rotate to be in contact with the movable base column 13, the movable base column 13 is punched at different vertical heights, and finally, nails are completely fixed on the surface of an object, aiming at the problem that a traditional hammer handle is difficult to apply force in a narrow space due to long time, so that the problem that the nails are difficult to insert into the object in a narrow space is effectively solved, a plurality of arc-shaped magnetic blocks 19 are fixedly arranged on the inner circumferential surface of a nail storage cylinder 21, an annular conical guide block 20 is arranged under the arc-shaped magnetic blocks 19, the top opening radius of the annular conical guide block 20 is larger than the bottom opening radius of the annular conical guide block, through arranging the arc-shaped magnetic blocks 19 and the annular conical guide block 20, the metal nails can be magnetically adsorbed and used by using the arc-shaped magnetic blocks 19, and meanwhile, the annular conical guide block 20 is used for guiding and using the bottom ends of the nails, the bending of nail is caused to effectual nail and the object surface production slope of preventing.
The working principle and the using process of the invention are as follows: when the hammer is used, the hammer shell base body 1 is held by one hand, the bottom end of the hammer shell base body 1 is arranged at a position where nails need to be nailed, the motor 6 is started to rotate at a constant speed by pressing the control switch 4, the motor 6 rotates to drive the crank-shaped transmission shaft 8 to rotate, the first rotating roller 9, the second rotating roller 10, the third rotating roller 11 and the fourth rotating roller 12 which are arranged on the surface of the crank-shaped transmission shaft 8 rotate in sequence to be in contact with the movable base column 13 when the crank-shaped transmission shaft 8 rotates, the punching effect on different vertical heights of the movable base column 13 is realized, finally, the nails are completely fixed on the surface of an object, when the nails are placed in the nail storage barrel 21, the arc-shaped magnetic block 19 is arranged, the metal nails can be magnetically adsorbed and used by using the arc-shaped magnetic block 19, and the annular conical guide block 20 is used for guiding and using the bottom end of the nails, so that the nails are effectively prevented from being inclined with the surface of the object to cause the bending of the nails, all the electric equipment in the device are powered by an external power supply.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a strike hammer for narrow and small space uses, includes hammer shell base member (1), its characterized in that: the hammer shell comprises a hammer shell base body (1), and is characterized in that a notch is formed in the circumferential surface of the hammer shell base body (1), an anti-skid rubber pad (2) is fixedly installed on the inner surface of the notch, four finger grooves (3) are uniformly formed in the circumferential surface of one side, away from the anti-skid rubber pad (2), of the hammer shell base body (1), a control switch (4) is fixedly installed on the upper surface of the hammer shell base body (1) above the anti-skid rubber pad (2), a fixedly installed base frame (5) is fixedly installed at the edge of the top end of the hammer shell base body (1), a motor (6) is fixedly installed at the bottom end of the fixedly installed base frame (5), an arc-shaped base plate (7) is fixedly installed below one end, away from the hammer shell base body (1), of the motor (6) close to the output end of the hammer shell base body (1) penetrates through a flange and is fixedly installed with a crankshaft-shaped transmission shaft (8), and one end, away from the motor (6), of the crankshaft-shaped transmission shaft (8), is rotatably connected with the inner wall of the hammer shell base body (1);
the hammer shell is characterized in that a first rotating roller (9), a second rotating roller (10), a third rotating roller (11) and a fourth rotating roller (12) are sequentially and movably mounted between the left end and the right end of the crankshaft-shaped transmission shaft (8), the distances between the respective axial lines of the first rotating roller (9), the second rotating roller (10), the third rotating roller (11) and the fourth rotating roller (12) and the axial line of the crankshaft-shaped transmission shaft (8) are sequentially increased, included angles formed by the second rotating roller (10), the third rotating roller (11) and the fourth rotating roller (12) and the vertical direction of the first rotating roller (9) are sequentially increased, a movable base pillar (13) is arranged under the crankshaft-shaped transmission shaft (8), the movable base pillar (13) is connected with the inner wall of the hammer shell base body (1) in a sliding mode, four arc-shaped protruding blocks (14) are fixedly mounted on the upper surface of the movable base pillar (13), a main support pillar (15) is fixedly mounted at the bottom end of the movable base pillar (13), the bottom fixed mounting of main tributary dagger (15) has carbon steel pad (18), the lower surface of main tributary dagger (15) activity base post (13) all around is equipped with a plurality of spring (17), the upper and lower both ends of a plurality of spring (17) are equallyd divide do not with the lower surface of activity base post (13) and the interior bottom surface fixed connection of hammer shell base member (1), be equipped with storage nail section of thick bamboo (21) under activity base post (13), the even fixed mounting of periphery of storing up nail section of thick bamboo (21) has a plurality of connecting block (16), store up nail section of thick bamboo (21) through a plurality of connecting block (16) and hammer shell base member (1) inner wall fixed connection, the interior global fixed mounting of circle of storing up nail section of thick bamboo (21) has a plurality of arc magnetism piece (19), cyclic annular toper is led and is just seted up under arc magnetism piece (19) and is led piece (20).
2. A rapping hammer for small spaces as claimed in claim 1, wherein: the hammer shell is characterized in that the inside of the hammer shell base body (1) is of a hollow structure, a round through hole is formed in the bottom end of the hammer shell base body (1), and the hammer shell base body (1) and the movable base column (13) are arranged in a concentric structure.
3. A rapping hammer for small spaces as claimed in claim 1, wherein: the radius of the top end of the movable foundation column (13) is larger than that of the bottom end of the movable foundation column, and the radius of the top end of the movable foundation column (13) is smaller than that of a hollow structure in the hammer shell base body (1).
4. A rapping hammer for small spaces as claimed in claim 1, wherein: the radius of a circular through hole formed in the nail storage barrel (21) is larger than that of the main support column (15), and the radius of the bottom end of the carbon steel pad (18) is completely matched with the structural size and the position of the radius of the circular through hole formed in the nail storage barrel (21) in a corresponding mode.
5. A rapping hammer for small spaces as claimed in claim 1, wherein: the crankshaft-shaped transmission shaft (8) is positioned right above the four arc-shaped convex blocks (14), and the opening radius of the top end of the annular conical guide block (20) is larger than that of the bottom end of the annular conical guide block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110961827.9A CN113500566A (en) | 2021-08-20 | 2021-08-20 | Knocking hammer used in narrow space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110961827.9A CN113500566A (en) | 2021-08-20 | 2021-08-20 | Knocking hammer used in narrow space |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113500566A true CN113500566A (en) | 2021-10-15 |
Family
ID=78016536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110961827.9A Pending CN113500566A (en) | 2021-08-20 | 2021-08-20 | Knocking hammer used in narrow space |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113500566A (en) |
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| US20160333542A1 (en) * | 2014-01-23 | 2016-11-17 | Hercules Machinery Corporation | Reciprocating hammer with downward thrust assist |
| CN104590193A (en) * | 2014-12-31 | 2015-05-06 | 徐州工业职业技术学院 | Pneumatic life rescue hammer |
| CN205591093U (en) * | 2016-03-23 | 2016-09-21 | 王丽萍 | Removal equipment is smashed to road |
| CN107336198A (en) * | 2017-07-24 | 2017-11-10 | 苏州艾乐蒙特机电科技有限公司 | A kind of impact electric hammer for becoming stroke |
| CN209453498U (en) * | 2019-01-24 | 2019-10-01 | 黎明职业大学 | A kind of architectural engineering multi-functional hammer |
| CN209669647U (en) * | 2019-02-27 | 2019-11-22 | 宋玉敏 | A kind of subgrade compaction machine |
| CN113001473A (en) * | 2021-03-24 | 2021-06-22 | 深圳市天雄星实业有限公司 | Can hold power carpenter hammer that uses in narrow and small space through pressing |
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