CN114147478A - Intermittent type formula knocking mechanism of cam linkage arm of force - Google Patents
Intermittent type formula knocking mechanism of cam linkage arm of force Download PDFInfo
- Publication number
- CN114147478A CN114147478A CN202111237157.2A CN202111237157A CN114147478A CN 114147478 A CN114147478 A CN 114147478A CN 202111237157 A CN202111237157 A CN 202111237157A CN 114147478 A CN114147478 A CN 114147478A
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- knocking
- plate
- cam
- arm
- mounting plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/10—Aligning parts to be fitted together
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
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Abstract
The invention discloses an intermittent type knocking mechanism with cam linkage force arms, which comprises an installation bottom plate, wherein two knocking force arms are arranged on the installation bottom plate and are controlled and positioned by a force arm positioning control mechanism respectively, a cam driving mechanism is also arranged on the installation bottom plate, the cam driving mechanism intermittently knocks the two knocking force arms to swing in a manner of controlling rotation of a cam, the two knocking force arms are intermittently knocked by the cam, and the other ends of the two knocking force arms are intermittently knocked on a product needing to be provided with screws in turn. According to the invention, the product (transformer) is intermittently knocked by the other ends of the two knocking force arms in a mode that the motor drives the cam to knock the two knocking force arms, so that gaps between magnetic cores and gaps between the magnetic cores and coils in the product are adjusted in the process of screwing and knocking the product, and the inductance value reaches the qualified range.
Description
Technical Field
The invention relates to transformer inductance value adjusting equipment, in particular to a cam linkage force arm intermittent knocking mechanism.
Background
At present, the screw assembly of product is fixed and has mostly adopted mechanical automatic assembly's mode, and mechanical automatic assembly's mode can replace manual assembly, improves assembly efficiency, reduce cost. In particular, the assembly of products such as electronic components and the like needs to be more precise, the inductance value of the transformer needs to be within a qualified value range by adjusting the gap between the coil and the magnetic core, and in the process of assembly and tightening, if the gap between the coil and the magnetic core can be more and more uniform, the inductance value of the transformer is more standard, and the qualification rate is higher.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide an intermittent knocking mechanism with a cam linkage force arm.
The purpose of the invention is realized by the following technical scheme: the utility model provides a cam linkage arm of force intermittent type formula knocking mechanism, includes mounting plate, the last two arm of forces that strike that are equipped with of mounting plate, two strike the arm of force and are controlled the location by an arm positioning control mechanism respectively, still be equipped with cam drive mechanism on the mounting plate, cam drive mechanism strikes two through control cam pivoted mode intermittent type formula strike the arm of force swing, two strike the arm of force and receive the intermittent type formula of cam is strikeed, two strike on the product that needs the assembly screw of striking of the other end of the arm of force can be in turn intermittent type formula.
The arm positioning control mechanism comprises a linear slide rail, a positioning cylinder seat and a linear slide block assembled with the linear slide rail, wherein an L-shaped connecting plate is arranged on the linear slide block, a positioning cylinder is arranged on the positioning cylinder seat, the piston rod end of the positioning cylinder is connected to one end of the connecting plate, and the connecting plate is connected to the knocking arm through a spring.
As an improvement of the cam linkage force arm intermittent type knocking mechanism, a bearing mounting block is arranged at a corner of the connecting plate, a bearing is arranged on the bearing mounting block, and the bearing and the knocking force arm are separated when the positioning cylinder returns to the original position.
The intermittent type knocking mechanism is characterized in that the knocking force arm is provided with a bending part, a guide shaft penetrates through the bending part and is positioned by a pressing cover and a bearing seat, one end of the knocking force arm is a knocking end, a deep groove ball bearing is arranged on the knocking end, the cam is intermittently knocked on the deep groove ball bearing, the other end of the knocking force arm is a connecting end, the connecting end is connected with an L-shaped supporting plate, and a cam follower is further arranged on the connecting end.
As an improvement of the intermittent type knocking mechanism with the cam linkage force arm, a strip-shaped hole is formed in the L-shaped supporting plate, a first rack is installed on the L-shaped supporting plate through the strip-shaped hole, a second rack is installed on the first rack, the tooth surfaces of the first rack and the second rack are meshed and connected, and a knocking block is arranged at the end of the second rack.
As an improvement of the intermittent cam linkage force arm type knocking mechanism, the cam is connected to the cam driving mechanism through a flange, the cam driving mechanism comprises a knocking motor mounting plate, a knocking motor is arranged on the knocking motor mounting plate, a supporting plate is arranged at the bottom of the knocking motor mounting plate, and the supporting plate is fixed on the mounting base plate through screw locking.
The intermittent type knocking mechanism with the cam linkage force arm further comprises a detection jig mechanism, wherein the detection jig mechanism is installed on a lifting mechanism, and the lifting mechanism is installed on an installation bottom plate.
The detection jig mechanism comprises a forward pushing cylinder mounting plate, a forward pushing cylinder is arranged on the forward pushing cylinder mounting plate, a piston rod end of the forward pushing cylinder is provided with a power testing cylinder, the power testing cylinder controls two power testing clamping jaws to perform clamping action, insulating pressing sheets are arranged on the two power testing clamping jaws, and copper wire induction bars are arranged on the two insulating pressing sheets;
an upper mounting plate is arranged at the upper end of the forward pushing cylinder, a blocking strip is arranged on the upper mounting plate, a blocking handle is arranged at one end of the blocking strip, and a butterfly nut is arranged on the blocking handle;
the bottom of the forward-push cylinder mounting plate is connected to the slide rail through a slide block, and guide rail limiting blocks are arranged at two ends of the slide rail respectively.
As an improvement of the cam linkage force arm intermittent type knocking mechanism, the lifting mechanism comprises a lifting mounting plate, linear bearings are arranged at four corners of the lifting mounting plate, each linear bearing penetrates through a guide shaft, the lower end of each guide shaft is mounted on a mounting bottom plate, the upper end of each guide shaft is connected to a fixing plate, an extending plate horizontally extends from the same side of the lifting mounting plate, the fixing plate and the mounting bottom plate, and a lifting adjusting assembly is mounted on each extending plate.
As an improvement of the cam linkage force arm intermittent type knocking mechanism, the lifting adjusting assembly comprises a trapezoidal screw rod, a trapezoidal screw rod nut is sleeved at the position, connected to one of the extension plates, of the trapezoidal screw rod, the trapezoidal screw rod nut is installed on the extension plate of the lifting installation plate, a trapezoidal screw rod fixing part is arranged at the upper end of the trapezoidal screw rod in a penetrating mode, a hand wheel is arranged at the upper end of the trapezoidal screw rod, and lifting adjustment can be achieved by rotating the trapezoidal screw rod and the lifting installation plate through the hand wheel.
The invention has the beneficial effects that: according to the invention, the product (transformer) is intermittently knocked by the other ends of the two knocking force arms in a mode that the motor drives the cam to knock the two knocking force arms, so that gaps between magnetic cores and gaps between the magnetic cores and coils in the product are adjusted in the process of screwing and knocking the product, and the inductance value reaches the qualified range. The positioning of the two knocking force arms adopts a force arm positioning control mechanism. Arm of force positioning control mechanism can utilize the elasticity of spring to make two strike the arm of force and strike the back and reset, adopts the locating action cooperation linear slide rail gliding characteristic of cylinder return stroke moreover, makes two strike the arm of force and strike the in-process and can provide and strike the cushion force.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is an exploded schematic view of the present invention;
fig. 3 is a rear view of the present invention.
Fig. 4 is a perspective view of the inspection jig mechanism of the present invention.
Fig. 5 is a partial structure schematic diagram of the knocking force arm of the invention.
The reference signs are:
1. mounting a bottom plate;
2. knocking the force arm; 21. the device comprises a bending part 22, a gland 23, a bearing seat 24, a knocking end 25, a deep groove ball bearing 26, a connecting end 27, an L-shaped supporting plate 28, a cam follower 271, a strip-shaped hole 272, a first rack 273, a second rack 274 and a knocking block;
3. a moment arm positioning control mechanism; 31. the linear slide rail 32, the positioning cylinder seat 33, the linear slide block 34, the connecting plate 35, the positioning cylinder 36, the spring 37, the bearing mounting block 38 and the bearing;
4. a cam driving mechanism; 41. the knocking motor mounting plate 42, the knocking motor 43 and the supporting plate;
5. a cam;
6. a detection jig mechanism; 61. the device comprises a forward pushing cylinder mounting plate 62, a forward pushing cylinder 63, a test electricity cylinder 64, a test electricity clamping jaw 65, an insulating pressing sheet 66, a copper wire induction bar 67, an upper mounting plate 68, a blocking bar 69, a blocking handle 60, a butterfly nut 601, a sliding block 602, a sliding rail 603 and a guide rail limiting block;
7. a lifting mechanism; 71. a lifting mounting plate 72, a linear bearing 73, a guide shaft 74, a fixing plate 75 and a protruding plate;
8. a lift adjustment assembly; 81. a trapezoidal screw 82, a trapezoidal screw nut 83, a trapezoidal screw fixing part 84 and a hand wheel.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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 of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and back) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
As shown in figures 1-5, the cam linkage force arm intermittent type knocking mechanism comprises a mounting base plate 1, two knocking force arms 2 are arranged on the mounting base plate 1, the two knocking force arms 2 are controlled and positioned by a force arm positioning control mechanism 3 respectively, a cam driving mechanism 4 is further arranged on the mounting base plate 1, the cam driving mechanism 4 intermittently knocks the two knocking force arms 2 to swing in a mode of controlling rotation of a cam 5, the two knocking force arms 2 are knocked by the cam 5 intermittently, and the other ends of the two knocking force arms 2 can knock on a product needing screw assembly intermittently in turn. The product is intermittently knocked by the two knocking force arms 2 to generate micro vibration, so that the gap between the screw and the hole position is more uniform, and the screw is more smoothly assembled.
Preferably, the force arm positioning control mechanism 3 comprises a linear slide rail 31, a positioning cylinder seat 32 and a linear slide block 33 assembled with the linear slide rail 31, wherein an L-shaped connecting plate 34 is arranged on the linear slide block 33, the positioning cylinder seat 32 is provided with a positioning cylinder 35, the piston rod end of the positioning cylinder 35 is connected to one end of the connecting plate 34, and the connecting plate 34 is connected to the knocking force arm 2 through a spring 36.
Preferably, a bearing mounting block 37 is arranged at a corner of the connecting plate 36, a bearing 38 is arranged on the bearing mounting block 37, and when the positioning cylinder 35 returns to the original position, the bearing 38 and the knocking force arm 2 are in a separated state.
Preferably, the knocking force arm 2 is provided with a bending part 21, the bending part 21 is provided with a guide shaft 73 in a penetrating mode and is positioned by the pressing cover 22 and the bearing seat 23, one end of the knocking force arm 2 is a knocking end 24, the knocking end 24 is provided with a deep groove ball bearing 25, the cam 5 is knocked on the deep groove ball bearing 25 in an intermittent mode, the other end of the knocking force arm 2 is a connecting end 26, the connecting end 26 is connected with an L-shaped supporting plate 27, and the connecting end 27 is further provided with a cam follower 28.
Preferably, a strip-shaped hole 271 is formed in the L-shaped support plate 27, a first rack 272 is mounted on the L-shaped support plate 27 through the strip-shaped hole 271, a second rack 273 is mounted on the first rack 272, the tooth surfaces of the first rack 272 and the second rack 273 are meshed and connected, and a knocking block 274 is arranged at the end of the second rack 273.
Preferably, the cam 5 is connected to the cam driving mechanism 4 through a flange 51, the cam driving mechanism 4 comprises a knocking motor mounting plate 41, the knocking motor mounting plate 41 is provided with a knocking motor 42, the bottom of the knocking motor mounting plate 41 is provided with a supporting plate 43, and the supporting plate 43 is fixed on the mounting base plate 1 through screw locking.
Preferably, the device further comprises a detection jig mechanism 6, wherein the detection jig mechanism 6 is installed on the lifting mechanism 7, and the lifting mechanism 7 is installed on the installation bottom plate 1. The detection jig mechanism 6 utilizes the copper wire induction bar on the electricity-testing clamping jaw to sense and test the electrical property of a product (transformer).
Preferably, the detection jig mechanism 6 comprises a forward pushing cylinder mounting plate 61, a forward pushing cylinder 62 is arranged on the forward pushing cylinder mounting plate 61, a piston rod end of the forward pushing cylinder 62 is provided with a test electric cylinder 63, the test electric cylinder 63 controls two test electric clamping jaws 64 to perform clamping action, two test electric clamping jaws 64 are respectively provided with an insulating pressing sheet 65, and two insulating pressing sheets 65 are respectively provided with a copper wire induction bar 66;
an upper mounting plate 67 is arranged at the upper end of the forward pushing cylinder 62, a blocking strip 68 is arranged on the upper mounting plate 67, a blocking handle 69 is arranged at one end of the blocking strip 68, and a butterfly nut 60 is arranged on the blocking handle 69;
the bottom of the forward-push cylinder mounting plate 61 is connected to the slide rail 602 through a slide block 601, and two ends of the slide rail 602 are respectively provided with a guide rail limiting block 603.
Preferably, the lifting mechanism 7 includes a lifting mounting plate 71, four corners of the lifting mounting plate 71 are provided with linear bearings 72, each linear bearing 72 is provided with a guide shaft 73 in a penetrating manner, the lower end of each guide shaft 73 is mounted on the mounting base plate 1, the upper end of each guide shaft 73 is connected to a fixing plate 74, the same side of the lifting mounting plate 71, the same side of the fixing plate 74 and the mounting base plate 1 horizontally extends to form an extending plate 75, and the extending plate 75 is provided with the lifting adjusting assembly 8.
Preferably, the lifting adjusting assembly 8 includes a trapezoidal screw 81, a trapezoidal screw nut 82 is sleeved on a position of the extension plate 75, where the trapezoidal screw 81 is connected to the lifting mounting plate 71, a trapezoidal screw fixing part 83 is penetrated through the upper end of the trapezoidal screw 81, a hand wheel 84 is arranged on the upper end of the trapezoidal screw 81, and the lifting adjustment can be realized by rotating the trapezoidal screw 81 and the lifting mounting plate 71 through the hand wheel 84. The lifting adjusting component 8 can drive the detection jig mechanism 6 to lift and adjust the position test product through the lifting mounting plate 71.
According to the invention, the product (transformer) is intermittently knocked by the other ends of the two knocking force arms in a mode that the motor drives the cam to knock the two knocking force arms, so that gaps between magnetic cores and gaps between the magnetic cores and coils in the product are adjusted in the process of screwing and knocking the product, and the inductance value reaches the qualified range. The positioning of the two knocking force arms adopts a force arm positioning control mechanism. Arm of force positioning control mechanism can utilize the elasticity of spring to make two strike the arm of force and strike the back and reset, adopts the locating action cooperation linear slide rail gliding characteristic of cylinder return stroke moreover, makes two strike the arm of force and strike the in-process and can provide and strike the cushion force.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and arrangements of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a cam linkage arm of force intermittent type formula knocking mechanism, includes mounting plate, its characterized in that, the last two arm of forces that strike that are equipped with of mounting plate, two strike the arm of force by an arm positioning control mechanism control location respectively, the last cam drive mechanism that still is equipped with of mounting plate, cam drive mechanism strikes two through control cam pivoted mode intermittent type formula strike the swing of the arm of force, two strike the arm of force and receive the intermittent type formula of cam is strikeed, two strike on the product that needs the assembly screw of the other end of the arm of force can intermittent type formula in turn.
2. The cam linkage force arm intermittent knocking mechanism is characterized in that the force arm positioning control mechanism comprises a linear slide rail, a positioning cylinder seat and a linear slide block assembled with the linear slide rail, an L-shaped connecting plate is arranged on the linear slide block, a positioning cylinder is mounted on the positioning cylinder seat, the piston rod end of the positioning cylinder is connected to one end of the connecting plate, and the connecting plate is connected to the knocking force arm through a spring.
3. The cam linkage force arm intermittent knocking mechanism as claimed in claim 2, wherein a bearing mounting block is arranged at a corner of the connecting plate, a bearing is arranged on the bearing mounting block, and the bearing and the knocking force arm are separated when the positioning cylinder returns to the original position.
4. The cam linkage force arm intermittent knocking mechanism is characterized in that the knocking force arm is provided with a bending portion, a guide shaft is arranged in the bending portion in a penetrating mode and located through a pressing cover and a bearing seat, one end of the knocking force arm is a knocking end, a deep groove ball bearing is arranged on the knocking end, the cam is intermittently knocked on the deep groove ball bearing, the other end of the knocking force arm is a connecting end, the connecting end is connected with an L-shaped supporting plate, and a cam follower is further arranged on the connecting end.
5. The cam linkage arm intermittent knocking mechanism as claimed in claim 4, wherein a strip-shaped hole is formed in the L-shaped support plate, a first rack is mounted on the L-shaped support plate through the strip-shaped hole, a second rack is mounted on the first rack, tooth surfaces of the first rack and the second rack are meshed and connected, and a knocking block is arranged at the end of the second rack.
6. The intermittent cam linkage arm knocking mechanism as claimed in claim 1, wherein the cam is connected to the cam driving mechanism through a flange, the cam driving mechanism comprises a knocking motor mounting plate, a knocking motor is arranged on the knocking motor mounting plate, a supporting plate is arranged at the bottom of the knocking motor mounting plate, and the supporting plate is fixed on the mounting base plate through screw locking.
7. The cam linkage arm intermittent knocking mechanism of claim 1, further comprising a detection jig mechanism, wherein said detection jig mechanism is mounted on a lifting mechanism, and said lifting mechanism is mounted on said mounting base plate.
8. The cam linkage force arm intermittent knocking mechanism according to claim 7, wherein the detection jig mechanism comprises a forward pushing cylinder mounting plate, a forward pushing cylinder is arranged on the forward pushing cylinder mounting plate, a piston rod end of the forward pushing cylinder is provided with a test cylinder, the test cylinder controls two test clamping jaws to perform clamping action, an insulating pressing sheet is arranged on each of the two test clamping jaws, and a copper wire induction bar is arranged on each of the two insulating pressing sheets;
an upper mounting plate is arranged at the upper end of the forward pushing cylinder, a blocking strip is arranged on the upper mounting plate, a blocking handle is arranged at one end of the blocking strip, and a butterfly nut is arranged on the blocking handle;
the bottom of the forward-push cylinder mounting plate is connected to the slide rail through a slide block, and guide rail limiting blocks are arranged at two ends of the slide rail respectively.
9. The cam linkage arm intermittent knocking mechanism according to claim 7, wherein the lifting mechanism comprises a lifting mounting plate, four corners of the lifting mounting plate are provided with linear bearings, each linear bearing is provided with a guide shaft in a penetrating manner, the lower end of each guide shaft is mounted on the mounting bottom plate, the upper end of each guide shaft is connected to a fixing plate, the same side of the lifting mounting plate, the fixing plate and the mounting bottom plate is horizontally extended with an extension plate, and a lifting adjusting assembly is mounted on the extension plate.
10. The intermittent cam linkage arm knocking mechanism according to claim 9, wherein the lifting adjusting assembly comprises a trapezoidal screw rod, the trapezoidal screw rod is connected to one of the protruding plates, a trapezoidal screw rod nut is sleeved at a position on the protruding plate, the trapezoidal screw rod nut is installed on the protruding plate of the lifting mounting plate, a trapezoidal screw rod fixing part is arranged at the upper end of the trapezoidal screw rod in a penetrating mode, a hand wheel is arranged at the upper end of the trapezoidal screw rod, and the lifting adjusting can be achieved through the hand wheel rotating the trapezoidal screw rod and the lifting mounting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111237157.2A CN114147478B (en) | 2021-10-22 | 2021-10-22 | Intermittent type formula knocking mechanism of cam linkage arm of force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111237157.2A CN114147478B (en) | 2021-10-22 | 2021-10-22 | Intermittent type formula knocking mechanism of cam linkage arm of force |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114147478A true CN114147478A (en) | 2022-03-08 |
| CN114147478B CN114147478B (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111237157.2A Active CN114147478B (en) | 2021-10-22 | 2021-10-22 | Intermittent type formula knocking mechanism of cam linkage arm of force |
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| Country | Link |
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| CN (1) | CN114147478B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3259223A (en) * | 1964-09-21 | 1966-07-05 | Ibm | Impression control apparatus employing two sets of stops |
| CN203861543U (en) * | 2014-05-28 | 2014-10-08 | 苏州经贸职业技术学院 | Cam type intermittent beating mechanism |
| CN109540448A (en) * | 2018-11-30 | 2019-03-29 | 安徽威成精密铸造有限公司 | A kind of filter quality detection percussion test device |
| CN111150968A (en) * | 2020-01-19 | 2020-05-15 | 浙江理工大学 | Massage machine for pushing, rubbing and walking for old people |
| CN112388574A (en) * | 2020-11-09 | 2021-02-23 | 福州经济技术开发区顺福昌电子科技有限公司 | A manual prospecting hammer that is used for can strike automatically and collect on perpendicular cliff |
-
2021
- 2021-10-22 CN CN202111237157.2A patent/CN114147478B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3259223A (en) * | 1964-09-21 | 1966-07-05 | Ibm | Impression control apparatus employing two sets of stops |
| CN203861543U (en) * | 2014-05-28 | 2014-10-08 | 苏州经贸职业技术学院 | Cam type intermittent beating mechanism |
| CN109540448A (en) * | 2018-11-30 | 2019-03-29 | 安徽威成精密铸造有限公司 | A kind of filter quality detection percussion test device |
| CN111150968A (en) * | 2020-01-19 | 2020-05-15 | 浙江理工大学 | Massage machine for pushing, rubbing and walking for old people |
| CN112388574A (en) * | 2020-11-09 | 2021-02-23 | 福州经济技术开发区顺福昌电子科技有限公司 | A manual prospecting hammer that is used for can strike automatically and collect on perpendicular cliff |
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| Publication number | Publication date |
|---|---|
| CN114147478B (en) | 2022-11-01 |
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