CN210029023U - A unloading platform for crest welder - Google Patents
A unloading platform for crest welder Download PDFInfo
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- CN210029023U CN210029023U CN201920794269.XU CN201920794269U CN210029023U CN 210029023 U CN210029023 U CN 210029023U CN 201920794269 U CN201920794269 U CN 201920794269U CN 210029023 U CN210029023 U CN 210029023U
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- conveying platform
- connecting rod
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- 230000007246 mechanism Effects 0.000 claims abstract description 65
- 230000017525 heat dissipation Effects 0.000 claims description 16
- 230000007704 transition Effects 0.000 claims description 13
- 230000009471 action Effects 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000005476 soldering Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract 2
- 230000003028 elevating effect Effects 0.000 abstract 2
- 238000005096 rolling process Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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Abstract
The utility model discloses a unloading platform for crest welder, it includes the mount, first heightening mechanism, the mechanism is heightened to the second, first conveying platform, second conveying platform and conveyer belt, first heightening mechanism and second heightening mechanism are fixed respectively at the both ends of mount, first conveying platform sets up on first heightening mechanism, and make elevating movement under the effect of first heightening mechanism, second conveying platform sets up on the mechanism is heightened to the second, and make elevating movement under the effect of second heightening mechanism, first conveying platform tip is articulated with second conveying platform tip, be equipped with the conveyer belt on first conveying platform and the second conveying platform, first conveying platform is connected with the actuating mechanism of drive conveyer belt motion, the conveyer belt has the bleeder vent, first conveying platform and/or second conveying platform bottom are provided with heat abstractor. Adopt the utility model discloses, realized can with circuit board automatic transport to next processing lines on, save the labour, improve the cooling rate of circuit board.
Description
Technical Field
The utility model relates to a circuit board processing equipment technical field especially relates to an unloading platform for crest welder.
Background
The processing technology of the circuit board comprises the following steps: inserting the components into the corresponding component holes of the circuit board, performing solder joint tinning through a crest welder, detecting solder joint leakage and leakage repairing, and detecting finished products. Generally, the work table top of the crest welder is not on the same horizontal plane as the work table top of the next processing production line, the temperature of the welded circuit board is high, if manual transportation is carried out, the circuit board is easily scalded, so that a blanking table is needed, the transportation between the crest welder and the next processing production line can be realized, and the circuit board can be cooled in the transportation process.
Disclosure of Invention
The utility model aims to solve the technical problem that a blanking platform for crest welder is provided, can save the labour with circuit board automatic transportation to next processing lines on, improve the cooling speed of circuit board.
In order to solve the technical problem, the utility model provides a blanking table for a crest welder, which comprises a fixed frame, a first heightening mechanism, a second heightening mechanism, a first conveying platform, a second conveying platform, a conveying belt and a heat dissipation device, the first heightening mechanism and the second heightening mechanism are respectively fixed at two ends of the fixed frame, the first conveying platform is arranged on the first heightening mechanism, and performs lifting motion under the action of the first heightening mechanism, the second conveying platform is arranged on the second heightening mechanism, and the lifting motion is carried out under the action of a second height-adjusting mechanism, the end part of the first conveying platform is hinged with the end part of the second conveying platform, the first conveying platform and the second conveying platform are provided with conveying belts, the first conveying platform is connected with a driving mechanism for driving the conveying belt to move, the conveying belt is provided with air holes, and the bottom of the first conveying platform and/or the bottom of the second conveying platform are/is provided with a heat dissipation device.
The driving mechanism comprises a driving motor, a driving rolling shaft, a transition rolling shaft, a driven rolling shaft and a compression roller, the driving rolling shaft is connected with the first conveying platform in a rotating mode, the driving rolling shaft is driven by the driving motor to rotate, the transition rolling shaft is arranged at the hinged position of the first conveying platform and the second conveying platform, the driven rolling shaft is connected with the second conveying platform in a rotating mode, the conveying belt is sleeved on the driving rolling shaft, the transition rolling shaft and the driven rolling shaft, and the compression roller is arranged at one end, close to the first conveying platform, of the second conveying platform and used for compressing the conveying belt.
The two sides of the first conveying platform are respectively connected with first connecting blocks in a sliding mode and locked through screws, a first round rod is fixed between the two first connecting blocks and located below the first conveying platform, and the first round rod is connected with a first height adjusting mechanism.
Wherein, first height-adjusting mechanism includes first fly leaf, first mount pad, first screw rod, first connecting rod and second connecting rod, first mount pad is fixed the mount top, first connecting rod one end is articulated with first mount pad, the other end and first fly leaf sliding connection, second connecting rod one end and first mount pad sliding connection, the other end is articulated with first fly leaf, and first connecting rod is articulated with second connecting rod middle part, first screw rod and first mount pad threaded connection, first screw rod end and second connecting rod are connected and are makeed the contained angle grow or diminish between first connecting rod and the second connecting rod when making first screw rod rotate, first fly leaf top is fixed with two first fixing bases, first round bar rotates with first fixing base to be connected.
The two sides of the second conveying platform are respectively connected with second connecting blocks in a sliding mode and locked through screws, a second round rod is fixed between the two second connecting blocks and located below the second conveying platform, and the second round rod is connected with a second height adjusting mechanism.
The second height-adjusting mechanism comprises a second movable plate, a second mounting seat, a second screw, a third connecting rod and a fourth connecting rod, the second mounting seat is fixed to the top of the fixing frame, one end of the third connecting rod is hinged to the second mounting seat, the other end of the third connecting rod is connected with the second movable plate in a sliding mode, one end of the fourth connecting rod is connected with the second mounting seat in a sliding mode, the other end of the fourth connecting rod is hinged to the second movable plate, the third connecting rod is hinged to the middle of the fourth connecting rod, the second screw is connected with the second mounting seat in a threaded mode, one end of the second screw is connected with the fourth connecting rod, so that an included angle between the third connecting rod and the fourth connecting rod is increased or decreased when the second screw rotates, two second fixing seats are fixed to the top of the second movable plate, and a second round rod is connected with the second.
The heat dissipation device comprises a support and a heat dissipation fan, the support is of a U-shaped structure, the first conveying platform and/or the second conveying platform are/is in sliding connection with the support and locked through screws, and the heat dissipation fan is mounted on the support.
Implement the utility model has the advantages that: be provided with first mechanism and the second mechanism of increaseing, can adjust first conveying platform and second conveying platform's height and inclination for the blanking platform can be with crest welder, next processing lines perfect adaptation, does benefit to circuit board ground and carries, and simultaneously, the conveyer belt has the bleeder vent and the conveyer belt below is provided with heat abstractor, realizes improving circuit board cooling speed at the conveying circuit board in-process.
Drawings
Fig. 1 is a front view of a blanking table for a crest welder according to the present invention;
FIG. 2 is a view A-A of FIG. 1;
fig. 3 is a schematic view illustrating an installation of a first conveying platform and a first fixing seat in a blanking table of a crest welder according to the present invention;
fig. 4 is a side view of a blanking table for a wave soldering machine according to the present invention;
fig. 5 is a top view of the blanking table for the crest welder of the present invention.
In the figure: 1. a fixed mount; 2. a first height adjustment mechanism; 21. a first movable plate; 22. a first mounting seat; 23. a first screw; 24. a first link; 25. a second link; 26. a first fixed end slide rail; 27. a first slider; 28. a first fixed seat; 29. a first hand wheel; 3. a second height adjustment mechanism; 31. a second movable plate; 32. a second mounting seat; 33. a second screw; 34. a third link; 35. a fourth link; 36. a second fixed end slide rail; 37. a second slider; 38. a second fixed seat; 39. a second hand wheel; 4. a first conveying platform; 41. a first connection block; 42. a first round bar; 5. a second conveying platform; 51. a second connecting block; 52. a second round bar; 6. a conveyor belt; 61. air holes are formed; 7. a heat sink; 71. a support; 72. a heat radiation fan; 8. a drive mechanism; 81. a drive motor; 82. a driving roller; 83. a transition roller; 84. a driven roller; 85. and (4) pressing the rolls.
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 some embodiments of the present invention, not all embodiments.
Referring to fig. 1-5, the utility model relates to a blanking table for crest welder, which comprises a fixed frame 1, a first heightening mechanism 2, a second heightening mechanism 3, a first conveying platform 4, a second conveying platform 5, a conveying belt 6 and a heat dissipating device 7, wherein the first heightening mechanism 2 and the second heightening mechanism 3 are respectively fixed at two ends of the fixed frame 1, the first conveying platform 4 is arranged on the first heightening mechanism 2 and performs lifting motion under the action of the first heightening mechanism 2, the second conveying platform 5 is arranged on the second heightening mechanism 3 and performs lifting motion under the action of the second heightening mechanism 3, the end part of the first conveying platform 4 is hinged with the end part of the second conveying platform 5, the conveying belt 6 is arranged on the first conveying platform 4 and the second conveying platform 5, the first conveying platform 4 is connected with a driving mechanism 8 for driving the conveying belt 6 to move, the conveying belt 6 is provided with air holes 61, and the bottoms of the first conveying platform 4 and the second conveying platform 5 are provided with heat dissipation devices 7. The height of the first height-adjusting mechanism 2 is adjusted, the first conveying platform 4 is inclined along with the first conveying platform, one end of the first conveying platform 4 is equal to the height of the outlet end of the crest welder, the height of the second height-adjusting mechanism 3 is adjusted, the second conveying platform 5 is inclined along with the second conveying platform, one end of the second conveying platform 5 is equal to the height of the initial end of the next processing production line, the driving mechanism 8 is started, the driving mechanism 8 drives the conveying belt 6 to operate so as to transport the circuit board from the crest welder to the next processing production line, in the transportation process, the heat dissipation device 7 generates air flow, the air flow is accelerated, and the purpose of cooling the circuit board is achieved.
Preferably, referring to fig. 1, the driving mechanism 8 includes a driving motor 81, a driving roller 82, a transition roller 83, a driven roller 84 and a pressing roller 85, the driving roller 82 is rotatably connected to the first conveying platform 4 through a bearing seat, the driving motor 81 is fixed at the bottom of the first conveying platform 4, an output end of the driving motor 81 drives the driving roller 82 to rotate through a transmission mechanism, specifically, the transmission mechanism includes a driving wheel, a driven wheel and a synchronous belt, an output shaft of the driving motor 81 is connected to the driving wheel, the driving roller 82 is connected to the driven wheel, the synchronous belt is sleeved on the wheel surfaces of the driving wheel and the driven wheel, the transition roller 83 is disposed at the hinged position of the first conveying platform 4 and the second conveying platform 5 through the bearing seat, the driven roller 84 is rotatably connected to the second conveying platform 5 through the bearing seat, and the conveyer belt 6 is sleeved on, The transition roller 83 and the driven roller 84, and the pressing roller 85 is arranged at one end of the second conveying platform 5 close to the first conveying platform 4 and used for pressing the conveyer belt 6. And starting the driving motor 81, driving the driving roller 82 to rotate by the driving motor 81, and enabling the conveyer belt 6 to rotate by the cooperation of the driving roller 82, the transition roller 83 and the driven roller 84, so as to realize the conveying of the circuit board from the first conveying platform 4 to the second conveying platform 5.
Preferably, referring to fig. 1, 2 and 5, the first conveying platform 4 is two parallel section bars, the left ends of the two section bars are rotatably connected to the driving roller 82, the right ends of the two section bars are rotatably connected to the transition roller 83, and the right ends of the two section bars are hinged to the second conveying platform 5 (the right end here is referred to as fig. 1), specifically, the axis of the hinged shaft is coaxial with the axis of the transition roller 83, the two section bars are respectively slidably connected to the first connecting blocks 41 and locked by screws, the first round bar 42 is fixed between the two first connecting blocks 41, the first round bar 42 is located below the first conveying platform 4, and the first round bar 42 is connected to the first height-adjusting mechanism 2. In the process of adjusting the first height-adjusting mechanism 2, the first conveying platform 4 rotates around the axis of the first round bar 42, so as to change the inclination angle of the first conveying platform 4.
Preferably, referring to fig. 2 and 3, the first height-adjusting mechanism 2 includes a first movable plate 21, a first mounting seat 22, a first screw 23, a first connecting rod 24 and a second connecting rod 25, the first mounting seat 22 is fixed on the top of the fixed frame 1, the first mounting seat 22 is connected to a first fixed end slide rail 26, one end of the first connecting rod 24 is hinged to the first mounting seat 22, the other end of the first connecting rod is slidably connected to the bottom of the first movable plate 21, one end of the second connecting rod 25 is hinged to a first sliding block 27, the first sliding block 27 is slidably connected to the first fixed end slide rail 26, the first screw 23 is in threaded connection with the first mounting seat 22, one end of the first screw 23 is connected to the first sliding block 27 and enables the first sliding block 27 to move along the direction of the first fixed end slide rail 26, the other end is fixed to a first hand wheel 29, the other end of the second connecting rod 25 is hinged to the bottom of the first movable plate 21, the first connecting rod 24 is, two first fixed seats 28 are fixed on the top of the first movable plate 21, the first fixed seat 28 is of a U-shaped structure, the end of the first fixed seat has a screw lock, the first round rod 42 is sleeved in the two first fixed seats 28, and after the first conveying platform 4 rotates to a proper angle around the first round rod 42 in the process of adjusting the height, the screw on the first fixed seat 28 is screwed tightly. When the height of the first conveying platform 4 is adjusted, an operator rotates the first screw 23 by rotating the first hand wheel 29, the first screw 23 drives the first slider 27 to move along the direction of the first fixed end slide rail 26, so that the second connecting rod 25 swings, and the second connecting rod 25 cooperates with the first connecting rod 24 to make the first movable plate 21 perform a lifting motion, that is, the first conveying platform 4 performs a lifting motion.
Preferably, referring to fig. 1, 4 and 5, the second conveying platform 5 is two parallel sectional materials, the left ends of the two sectional materials are hinged to the first conveying platform 4, the right ends of the two sectional materials are rotatably connected to the driven roller 84, the two sectional materials are respectively and slidably connected to the second connecting blocks 51 and locked by screws, the second round rod 52 is fixed between the two second connecting blocks 51, the second round rod 52 is located below the second conveying platform 5, and the second round rod 52 is connected to the second height-adjusting mechanism 3. In the process of adjusting the second height-adjusting mechanism 3, the second conveying platform 5 rotates around the axis of the second round bar 52, so as to change the inclination angle of the second conveying platform 5.
Preferably, referring to fig. 4, the second height-adjusting mechanism 3 includes a second movable plate 31, a second mounting seat 32, a second screw 33, a third connecting rod 34 and a fourth connecting rod 35, the second mounting seat 32 is fixed on the top of the fixed frame 1, the second mounting seat 32 is connected with a second fixed-end slide rail 36, one end of the third connecting rod 34 is hinged with the second mounting seat 32, the other end is slidably connected with the bottom of the second movable plate 31, one end of the fourth connecting rod 35 is hinged with a second sliding block 37, the second sliding block 37 is slidably connected with the second fixed-end slide rail 36, the second screw 33 is in threaded connection with the second mounting seat 32, one end of the second screw 33 is connected with the second sliding block 37 and enables the second sliding block 37 to move along the direction of the first fixed-end slide rail 26, the other end is fixed with a second hand wheel 39, the other end of the fourth connecting rod 35 is hinged with the bottom of the second movable plate 31, the third connecting rod 34 is hinged with, the top of the second movable plate 31 is fixed with two second fixed seats 38, the second fixed seats 38 are U-shaped structures, the end portions of the second fixed seats are locked by screws, the second round rod 52 is sleeved in the two second fixed seats 38, and the second conveying platform 4 rotates around the second round rod 52 to a proper angle in the process of adjusting the height, and then the screws on the second fixed seats 38 are screwed tightly. When the height of the second conveying platform 5 is adjusted, the operator rotates the second screw 33 by rotating the second hand wheel 39, the second screw 33 drives the second slider 37 to move along the direction of the second fixed end slide rail 36, so that the fourth link 35 swings, and the fourth link 35 cooperates with the third link 34 to make the second movable plate 31 perform a lifting motion, that is, the second conveying platform 5 performs a lifting motion.
Preferably, referring to fig. 1, the heat dissipation device 7 includes a bracket 71 and a heat dissipation fan 72, the bracket 71 is of a U-shaped structure, the first conveying platform 4 and the second conveying platform 5 are slidably connected with the bracket 71 and locked by screws, and the heat dissipation fan 72 is mounted on the bracket 71. The operator can increase or decrease the number of the heat dissipation devices 7 as required, and the air flow around the circuit board is accelerated by the heat dissipation fan 72, thereby cooling the circuit board.
The working principle is as follows: an operator firstly rotates the first hand wheel 29 to adjust the height of the first conveying platform 4, and simultaneously the first conveying platform 4 rotates by an angle around the axial lead of the first round bar 42 in the process of adjusting the height (namely the inclination angle of the first conveying platform 4 is passively adjusted), so that one end of the first conveying platform 2 is as high as the working platform of the crest welder; then, the operator rotates the second hand wheel 39 to adjust the second conveying platform 5, and simultaneously the second conveying platform 5 rotates around the axis of the second round bar 52 by an angle in the process of adjusting the height (i.e. the inclination angle of the second conveying platform 5 is passively adjusted), so that one end of the second conveying platform 2 is as high as the working platform of the next processing production line (with reference to fig. 1, the first conveying platform 4 and the second conveying platform 5 are both inclined towards the lower right direction), then the driving mechanism 8 is started to enable the conveying belt 6 to convey the circuit board, and then the heat dissipation device 7 is started to dissipate heat of the circuit board. Adopt the utility model discloses, can save the labour with circuit board automatic transport to next processing lines on, improve the cooling rate of circuit board.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. A blanking table for a crest welder is characterized by comprising a fixed frame (1), a first heightening mechanism (2), a second heightening mechanism (3), a first conveying platform (4), a second conveying platform (5), a conveying belt (6) and a heat dissipation device (7), wherein the first heightening mechanism (2) and the second heightening mechanism (3) are respectively fixed at two ends of the fixed frame (1), the first conveying platform (4) is arranged on the first heightening mechanism (2) and performs lifting motion under the action of the first heightening mechanism (2), the second conveying platform (5) is arranged on the second heightening mechanism (3) and performs lifting motion under the action of the second heightening mechanism (3), the end part of the first conveying platform (4) is hinged with the end part of the second conveying platform (5), the conveying belt (6) is arranged on the first conveying platform (4) and the second conveying platform (5), first conveying platform (4) are connected with actuating mechanism (8) of drive conveyer belt (6) motion, conveyer belt (6) have bleeder vent (61), first conveying platform (4) and/or second conveying platform (5) bottom are provided with heat abstractor (7).
2. The blanking table for a wave soldering machine according to claim 1, wherein the driving mechanism (8) comprises a driving motor (81), a driving roller (82), a transition roller (83), a driven roller (84) and a pressing roller (85), the driving roller (82) is rotationally connected with the first conveying platform (4), the driving motor (81) drives the driving roller (82) to rotate, the transition roller (83) is arranged at the hinged position of the first conveying platform (4) and the second conveying platform (5), the driven roller (84) is rotationally connected with the second conveying platform (5), the conveying belt (6) is sleeved on the driving roller (82), the transition roller (83) and the driven roller (84), and the compression roller (85) is arranged at one end of the second conveying platform (5) close to the first conveying platform (4) and used for compressing the conveying belt (6).
3. The blanking table for the crest welder as recited in claim 1, characterized in that the first conveying platform (4) is connected with first connecting blocks (41) at two sides respectively in a sliding manner and locked by screws, a first round bar (42) is fixed between the two first connecting blocks (41), the first round bar (42) is located below the first conveying platform (4), and the first round bar (42) is connected with the first height-adjusting mechanism (2).
4. The blanking table for the crest welder as recited in claim 3, wherein the first height-adjusting mechanism (2) comprises a first movable plate (21), a first mounting seat (22), a first screw (23), a first connecting rod (24) and a second connecting rod (25), the first mounting seat (22) is fixed on the top of the fixed frame (1), one end of the first connecting rod (24) is hinged with the first mounting seat (22), the other end is slidably connected with the first movable plate (21), one end of the second connecting rod (25) is slidably connected with the first mounting seat (22), the other end is hinged with the first movable plate (21), the first connecting rod (24) is hinged with the middle of the second connecting rod (25), the first screw (23) is in threaded connection with the first mounting seat (22), one end of the first screw (23) is connected with the second connecting rod (25) so that an included angle between the first connecting rod (24) and the second connecting rod (25) is increased or decreased when the first screw (23) rotates, two first fixed seats (28) are fixed on the top of the first movable plate (21), and the first round rod (42) is rotatably connected with the first fixed seats (28).
5. The blanking table for the crest welder as recited in claim 1, wherein the second conveying platform (5) is connected with second connecting blocks (51) at two sides respectively in a sliding manner and locked by screws, a second round bar (52) is fixed between the two second connecting blocks (51), the second round bar (52) is located below the second conveying platform (5), and the second round bar (52) is connected with the second height-adjusting mechanism (3).
6. The blanking table for the crest welder as recited in claim 5, wherein the second height-adjusting mechanism (3) comprises a second movable plate (31), a second mounting seat (32), a second screw (33), a third connecting rod (34) and a fourth connecting rod (35), the second mounting seat (32) is fixed on the top of the fixed frame (1), one end of the third connecting rod (34) is hinged with the second mounting seat (32), the other end is slidably connected with the second movable plate (31), one end of the fourth connecting rod (35) is slidably connected with the second mounting seat (32), the other end is hinged with the second movable plate (31), the third connecting rod (34) is hinged with the middle of the fourth connecting rod (35), the second screw (33) is in threaded connection with the second mounting seat (32), one end of the second screw (33) is connected with the fourth connecting rod (35) so that the included angle between the third connecting rod (34) and the fourth connecting rod (35) is increased or decreased when the second screw (33) rotates, two second fixed seats (38) are fixed on the top of the second movable plate (31), and the second round rod (52) is rotatably connected with the second fixed seats (38).
7. The blanking table for the crest welder as recited in claim 1, wherein the heat sink (7) comprises a bracket (71) and a heat dissipation fan (72), the bracket (71) is of a U-shaped structure, the first conveying platform (4) and/or the second conveying platform (5) are/is slidably connected with the bracket (71) and locked by screws, and the heat dissipation fan (72) is mounted on the bracket (71).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920794269.XU CN210029023U (en) | 2019-05-29 | 2019-05-29 | A unloading platform for crest welder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920794269.XU CN210029023U (en) | 2019-05-29 | 2019-05-29 | A unloading platform for crest welder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210029023U true CN210029023U (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920794269.XU Expired - Fee Related CN210029023U (en) | 2019-05-29 | 2019-05-29 | A unloading platform for crest welder |
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| Country | Link |
|---|---|
| CN (1) | CN210029023U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113184473A (en) * | 2021-05-10 | 2021-07-30 | 山东交通学院 | A reform transform device that is used for median concrete barrier of highway |
-
2019
- 2019-05-29 CN CN201920794269.XU patent/CN210029023U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113184473A (en) * | 2021-05-10 | 2021-07-30 | 山东交通学院 | A reform transform device that is used for median concrete barrier of highway |
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Granted publication date: 20200207 |