CN111169877A - Double-deep-position hooking fork for stacking machine - Google Patents
Double-deep-position hooking fork for stacking machine Download PDFInfo
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- CN111169877A CN111169877A CN201811329774.3A CN201811329774A CN111169877A CN 111169877 A CN111169877 A CN 111169877A CN 201811329774 A CN201811329774 A CN 201811329774A CN 111169877 A CN111169877 A CN 111169877A
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- fork
- driving
- middle fork
- clamping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G1/00—Storing articles, individually or in orderly arrangement, in warehouses or magazines
- B65G1/02—Storage devices
- B65G1/04—Storage devices mechanical
- B65G1/0407—Storage devices mechanical using stacker cranes
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Abstract
The invention relates to the technical field of automatic warehouse storage flow, in particular to a double-deep-position hooking fork for a stacker, which comprises a driving mechanism and two groups of sliding fork assemblies, wherein each group of sliding fork assemblies comprises a driving end fork, a primary middle fork, a secondary middle fork and a clamping end fork which are sequentially connected in a sliding manner, the driving end fork drives the primary middle fork through a driving gear group and a rack, two first chains fixedly connected with the driving end fork are arranged on the primary middle fork, one first chain is connected with the far end of the secondary middle fork after bypassing the first idler wheel at the near end of the primary middle fork, the other first chain is fixedly connected with the near end of the secondary middle fork after bypassing the first idler wheel at the far end of the primary middle fork, two second chains fixedly connected with the primary middle fork are arranged on the secondary middle fork, one second chain is connected with the far end of the clamping end fork after bypassing the second idler wheel at the near end of the secondary middle fork, the other chain is connected with the near end of the clamping end fork, the front end and the rear end of the clamping end fork are provided with rotatable shifting fingers. The invention doubles the telescopic stroke and has light and handy integral structure.
Description
Technical Field
The invention relates to the technical field of automatic warehouse logistics, in particular to a double-deep-position hooking fork for a stacking machine.
Background
With the rapid development of economy in China, the automatic stereoscopic warehouse is also widely applied to various industries, a stacker is a main machine in stereoscopic warehouse complete equipment, and a fork is the most central component in the stacker and is used for storing and taking goods between a roadway and a sorting conveying line.
Disclosure of Invention
The invention aims to provide a double-deep-position hooking fork for a stacking machine, which adopts a four-stage double-deep-position structure, doubles the telescopic stroke to further realize long-distance extension, adopts a finger-poking hooking mode to pick and place goods, and has a light and handy whole structure and low manufacturing cost.
The purpose of the invention is realized by the following technical scheme:
a double-deep-position hooking fork for a stacking machine comprises a driving mechanism and two groups of sliding fork assemblies, wherein each group of sliding fork assemblies comprises a driving end fork, a first-stage middle fork, a second-stage middle fork and a clamping end fork which are sequentially connected in a sliding manner, a driving gear set is arranged on the driving end fork, the driving gear sets on the driving end forks on two sides are driven by the driving mechanism to synchronously rotate, a rack meshed with the driving gear set is arranged on the upper side of the first-stage middle fork, a first idler and two first chains fixedly connected with the driving end fork are arranged on the first-stage middle fork, one first chain is connected with the far end of the second-stage middle fork after bypassing the first idler positioned at the near end of the first-stage middle fork, the other first chain is fixedly connected with the near end of the second-stage middle fork after bypassing the first idler positioned at the far end of the first-stage middle fork, a second idler and two second chains fixedly connected with the first-stage middle, and one of the second chains is connected with the far end of the clamping end fork after bypassing the second idler wheel positioned at the near end of the second-stage middle fork, the other second chain is connected with the near end of the clamping end fork after bypassing the second idler wheel positioned at the far end of the second-stage middle fork, the front end and the rear end of the clamping end fork are both provided with rotatable shifting fingers, and goods are blocked at the front side and the rear side through the rotation of the shifting fingers on the sliding fork assemblies at the two sides to realize hooking.
The driving gear set is an array and comprises a plurality of driving gears and a plurality of intermediate gears, the driving gears and the intermediate gears are arranged in a staggered mode, the driving gears are meshed with the racks, and any driving gear passes through the driving mechanism to drive and rotate.
The driving mechanism comprises a driving device, a driving shaft and a transmission assembly, the driving shaft is driven to rotate by the driving device, the driving gear sets on the driving end forks at two sides are driven to synchronously rotate by the driving shaft, and the driving shaft transmits torque by the transmission assembly.
The transmission assembly is a synchronous belt transmission assembly, a driving belt wheel in the synchronous belt transmission assembly is installed on an output shaft of the driving device, a driven belt wheel is coaxially and fixedly connected with any driving gear, a synchronous belt bypasses the driving belt wheel and the driven belt wheel, and the synchronous belt is tensioned through a tensioning wheel.
The upper edge of the first-stage middle fork is connected with the driving end fork in a sliding mode, the lower edge of the first-stage middle fork is connected with the upper edge of the second-stage middle fork in a sliding mode, and the lower edge of the second-stage middle fork is connected with the clamping end fork in a sliding mode.
The first-stage middle fork and the clamping end fork are located on the same side of the second-stage middle fork, the driving end fork is provided with a driving fork seat, and the first-stage middle fork, the second-stage middle fork and the clamping end fork move into the driving fork seat when retracting.
The clamping fork plate of the clamping end fork is provided with a shifting finger and a shifting finger driving device at two ends, the shifting finger is vertically arranged on the clamping fork plate and is driven to rotate by the shifting finger driving device at the same end, mechanical stop blocks for limiting the rotating range of the shifting finger are arranged at two ends of the clamping fork plate, and a sensing switch for detecting whether the shifting finger rotates in place is arranged on a mounting seat of any shifting finger driving device.
The invention has the advantages and positive effects that:
1. the invention is suitable for the double-deep storage shelf, the goods form is a cube form, and the invention has the outstanding advantages that a four-stage double-deep structure is adopted, the telescopic stroke is doubled, the long-distance stretching is realized, and the goods can be stored and taken on the single-side double-row shelf in the roadway. The ground utilization rate and the access working efficiency are greatly improved, and meanwhile, the cost can be reduced for users.
2. The invention is different from the plate fork and the finger fork which are adopted at present, the finger hook forms need to extend below goods for taking goods, so the finger hook is suitable for a bracket type goods shelf, the structural strength of the finger hook forms is lower than that of a beam type goods shelf, the finger hook forms the side surface of the goods on the goods shelf for taking and placing the goods, the efficiency is greatly improved compared with the efficiency, and the weight of the goods is not born by each fork body which drives the finger to extend when the finger hook forms the goods, so the whole structure is light, the manufacturing cost is low, and great economic benefits are brought to customers using the stacker.
Drawings
Figure 1 is a perspective view of the present invention,
figure 2 is a front view of the invention of figure 1,
FIG. 3 is a schematic view of the drive end fork and drive mechanism of FIG. 1,
figure 4 is a schematic view of the one-stage mid-fork configuration of figure 1,
figure 5 is a schematic diagram of the two-stage mid-fork configuration of figure 1,
figure 6 is a schematic view of the gripper end fork configuration of figure 1,
fig. 7 is a right side view of the invention of fig. 2.
The device comprises a driving end fork 1, a driving fork seat 101, a driving gear 102, an intermediate gear 103, a goods detecting switch 104, a first-level middle fork 2, a rack 201, a first slide rail 202, a second slide rail 203, a first idler wheel 204, a first chain 205, a second-level middle fork 3, a second idler wheel 301, a second chain 302, a clamping end fork 4, a third slide rail 401, a clamping fork plate 402, an inductive switch 403, a mechanical stop 404, a finger 405, a finger driving device 406, a driving mechanism 5, a driving device 501, a tension wheel 502, a synchronous belt 503 and a driving shaft 504.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 7, the telescopic sliding fork comprises a driving mechanism 5 and two sets of sliding fork assemblies which are arranged in parallel and symmetrically, each set of sliding fork assembly comprises a driving end fork 1, a first-stage middle fork 2, a second-stage middle fork 3 and a clamping end fork 4 which are connected in sequence in a sliding manner, as shown in fig. 3, a driving gear set is arranged on the driving end fork 1, the driving gear sets on the driving end forks 1 at two sides are driven to rotate synchronously by the driving mechanism 5, as shown in fig. 1 and 4, a rack 201 meshed with the driving gear set is arranged on the upper side of the first-stage middle fork 2, and the first-stage middle fork 2 transmits torque through the driving gear set and the rack 201 to realize telescopic movement.
As shown in FIGS. 1-2, the end of each fork near side A is a proximal end, and the end near side B is a distal end. As shown in fig. 1-2 and fig. 4, two first idler wheels 204 and two first chains 205 are arranged on the first-stage middle fork 2, wheel surfaces of the two first idler wheels 204 are parallel to a fork plate of the first-stage middle fork 2 and are arranged in a staggered manner, one end of each of the two first chains 205 is fixedly arranged on the driving end fork 1, the other end of one of the first chains 205 bypasses the first idler wheel 204 at the near end of the first-stage middle fork 2 and then is fixedly connected with the far end of the second-stage middle fork 3, and the other end of the other first chain 205 bypasses the first idler wheel 204 at the far end of the first-stage middle fork 2 and then is fixedly connected with the near end of the second-stage middle fork 3. When the mechanism works, one end of the first chain 205 is fixedly arranged on the driving end fork 1 and does not move, when the first-stage middle fork 2 extends out, the first idle wheel 204 at the far end of the first-stage middle fork 2 moves forwards along with the first idle wheel and drives the near end of the second-stage middle fork 3 to move forwards through the corresponding first chain 205 so as to extend the second-stage middle fork 3, and when the first-stage middle fork 2 retracts, the first idle wheel 204 at the near end of the first-stage middle fork 2 retreats and drives the far end of the second-stage middle fork 3 to move backwards through the corresponding first chain 205 so as to retract the second-stage middle fork.
As shown in fig. 1-2 and 5, two second idler pulleys 301 and two second chains 302 are arranged on the second-stage middle fork 3, wheel surfaces of the two second idler pulleys 301 are parallel to and staggered with a fork plate of the second-stage middle fork 3, one ends of the two second chains 302 are fixedly arranged on the first-stage middle fork 2, the other end of one second chain 302 bypasses the second idler pulley 301 located at the near end of the second-stage middle fork 3 and then is connected with the far end of the clamping end fork 4, and the other end of the other second chain 302 bypasses the second idler pulley 301 located at the far end of the second-stage middle fork 3 and then is connected with the near end of the clamping end fork 4. When the mechanism works, when the second-stage middle fork 3 extends out, the second idle wheel 301 at the far end of the second-stage middle fork 3 moves forwards along with the second idle wheel and drives the near end of the clamping end fork 4 to move forwards through the corresponding second chain 302, and when the second-stage middle fork 3 retracts, the second idle wheel 301 at the near end of the second-stage middle fork 3 retracts along with the second idle wheel and drives the far end of the clamping end fork 4 to retract through the corresponding second chain 302.
As shown in fig. 3, the driving gear sets on the driving end fork 1 are arranged in a line and include a plurality of driving gears 102 and a plurality of intermediate gears 103, the driving gears 102 have a larger diameter than the intermediate gears 103, and the driving gears 102 and the intermediate gears 103 are arranged in a staggered manner. When the mechanism works, all the driving gears 102 can be meshed with the racks 201 on the first-stage middle fork 2, and when the first-stage middle fork 2 extends out completely, at least one driving gear 102 is meshed with the racks 201 to meet the required telescopic stroke, and in addition, a stop block is arranged at the near end of each rack 201 to prevent the first-stage middle fork 2 from being separated from the driving end fork 1.
As shown in fig. 1 and 3, the driving mechanism 5 includes a driving device 501, a driving shaft 504 and a transmission assembly, the driving shaft 504 is driven by the driving device 501 to rotate, the driving gear sets on the two side driving end forks 1 are driven by the driving shaft 504 to rotate synchronously, and the driving shaft 504 transmits torque through the transmission assembly.
As shown in fig. 3, the driving end fork 1 is provided with a driving fork seat 101, and the transmission assembly is provided on the driving fork seat 101, in this embodiment, the driving device 501 is a servo motor with a speed reducer, the transmission assembly is a synchronous belt transmission assembly, a driving pulley in the synchronous belt transmission assembly is mounted on an output shaft of the driving device 501, a driven pulley is coaxially and fixedly connected with any one of the driving gears 102, a synchronous belt 503 bypasses the driving pulley and the driven pulley, and a movably adjustable tension pulley 502 is further provided on the driving fork seat 101 to adjust the tension of the synchronous belt 503. In this embodiment, the driven pulley is coaxially and fixedly connected with the driving gear 102 located in the middle.
As shown in fig. 1 to 2, a first slide rail 202 is disposed at an upper edge of a fork plate of the first-stage middle fork 2, a second slide rail 203 is disposed at a lower edge of the fork plate, a first slide block engaged with the first slide rail 202 is disposed on the driving end fork 1, a second slide block engaged with the second slide rail 203 is disposed at an upper edge of a fork plate of the second-stage middle fork 2, a third slide rail 401 is disposed on the clamping end fork 4, a third slide block engaged with the third slide rail 401 is disposed at a lower edge of a fork plate of the second-stage middle fork 2, and as shown in fig. 7, the first-stage middle fork 2 and the clamping end fork 4 are located on the same side of the second-stage middle fork 2. As shown in fig. 3, the drive end fork 1 is provided with a drive fork base 101, and the primary middle fork 2, the secondary middle fork 3, and the gripper end fork 4 are all moved into the drive fork base 101 when retracted.
Rotatable shifting fingers 405 are arranged at the front end and the rear end of the clamping end fork 4, and when the mechanism works, goods are blocked at the front end and the rear end by the rotation of the shifting fingers 405 on the sliding fork assemblies at the two sides to be hooked. As shown in fig. 6, two ends of a clamping fork plate 402 of the clamping end fork 4 are provided with a finger 405 and a finger driving device 406, the finger 405 is vertically arranged inside the clamping fork plate 402 and one end of the finger is hinged to an end of the clamping fork plate 402, the finger 405 is driven to rotate by the finger driving device 406 at the same end, two ends of the clamping fork plate 402 are provided with mechanical stoppers 404 for limiting a rotation angle of a tail end of the finger 405, a mounting seat of the finger driving device 406 at either end is provided with an inductive switch 403 for detecting whether the finger is rotated in place, and the inductive switch 403 is a technology known in the art. In this embodiment, the finger driving device 406 is a servo motor.
The working principle of the invention is as follows:
when the fork is in operation, the gear set at the upper end of the driving end fork 1 is driven to rotate by the driving mechanism 5, and further the rack 201 at the upper side of the first-stage middle fork 2 drives the first-stage middle fork 2 to move, when the fork is extended, the first-stage middle fork 2 extends out, the first idle wheel 204 at the far end of the first-stage middle fork 2 moves forwards and drives the second-stage middle fork 3 to extend forwards by the corresponding first chain 205, the second idle wheel 301 at the far end of the second-stage middle fork 3 moves forwards and drives the clamping end fork 4 to move forwards by the corresponding second chain 302, when the fork is retracted, the first-stage middle fork 2 retracts, the first idle wheel 204 at the near end of the first-stage middle fork 2 retracts and drives the second-stage middle fork 3 to retract backwards by the corresponding first chain 205, and the second idle wheel 301 at the near end of the second-stage middle fork 3 retracts and drives.
When the clamping end fork 4 extends to the right position, the goods detecting switch 104 on the driving end fork 1 sends a signal to stop the driving device 501 in the driving mechanism 5 after detecting the goods, then, as shown in fig. 6, the finger driving device 406 drives the corresponding finger 405 to rotate and block the two ends of the front and rear sides of the goods, the inductive switch 403 detects that the finger rotates to the position, then the driving device 501 runs reversely to drive the forks to retract and hook the goods to the goods carrying platform, then the stacker runs along the ground rail, after reaching the designated working position, the driving device 501 starts to work, the holding end fork 4 extends to a position to push the goods to a designated position, after the goods detecting switch 104 detects a correct position signal, the driving device 501 stops working, the finger driving device 406 rotates the finger 405 to retract, the inductive switch 403 detects that the finger is rotated in place, the driving device 501 rotates reversely, and each fork retracts to the initial state, thereby completing a working cycle.
When the invention works, the driving device 501 adopts a servo motor as a power source for the movement of each fork and adopts PLC programming for control. According to the on-site condition of the stereoscopic warehouse, the PLC is used for recording the accurate position required by walking and recording, and after the debugging is successful, the full-automatic operation can be realized.
Claims (7)
1. The utility model provides a fork is got with two deep-seated colludes to stacker which characterized in that: comprises a driving mechanism (5) and two groups of sliding fork components, wherein each group of sliding fork components comprises a driving end fork (1), a first-stage middle fork (2), a second-stage middle fork (3) and a clamping end fork (4) which are sequentially connected in a sliding manner, the driving end fork (1) is provided with a driving gear set, the driving gear sets on the driving end forks (1) at two sides are driven to synchronously rotate through the driving mechanism (5), the upper side of the first-stage middle fork (2) is provided with a rack (201) meshed with the driving gear set, the first-stage middle fork (2) is provided with a first idle wheel (204) and two first chains (205) fixedly connected with the driving end fork (1), one first chain (205) is connected with the far end of the second-stage middle fork (3) after bypassing the first idle wheel (204) at the near end of the first-stage middle fork (2), the other chain (205) is fixedly connected with the near end of the second-stage middle fork (3) after bypassing the first idle wheel (204) at the far end of the first-stage middle fork, be equipped with second idler (301) and two second chain (302) that link firmly with one-level middle fork (2) in the second grade in fork (3), and one of them second chain (302) walk around behind second idler (301) that are located second grade middle fork (3) near-end and link to each other with the distal end of centre gripping end fork (4), another second chain (302) walk around behind second idler (301) that are located second grade middle fork (3) distal end and link to each other with the near-end of centre gripping end fork (4) the front and back end of centre gripping end fork (4) all is equipped with rotatable shifting finger (405), and the goods rotate through shifting finger (405) on the slip fork subassembly of both sides and block the front and back side and realize colluding.
2. The stacker of claim 1 further comprising a dual depth hooking fork, wherein: the driving gear set is arranged in a line and comprises a plurality of driving gears (102) and a plurality of intermediate gears (103), the driving gears (102) and the intermediate gears (103) are arranged in a staggered mode, the driving gears (102) are meshed with the racks (201), and any driving gear (102) is driven to rotate through the driving mechanism (5).
3. The stacker of claim 2 further comprising a dual depth hooking fork, wherein: the driving mechanism (5) comprises a driving device (501), a driving shaft (504) and a transmission assembly, the driving shaft (504) is driven to rotate by the driving device (501), the driving gear sets on the driving end forks (1) on the two sides are driven to synchronously rotate by the driving shaft (504), and the driving shaft (504) transmits torque by the transmission assembly.
4. The dual depth hooking fork for a stacker of claim 3 wherein: the transmission assembly is a synchronous belt transmission assembly, a driving pulley in the synchronous belt transmission assembly is installed on an output shaft of the driving device (501), a driven pulley is coaxially and fixedly connected with any one of the driving gears (102), a synchronous belt (503) bypasses the driving pulley and the driven pulley, and the synchronous belt (503) is tensioned through a tensioning wheel (502).
5. The stacker of claim 1 further comprising a dual depth hooking fork, wherein: the upper edge of the first-stage middle fork (2) is connected with the driving end fork (1) in a sliding mode, the lower edge of the first-stage middle fork is connected with the upper edge of the second-stage middle fork (2) in a sliding mode, and the lower edge of the second-stage middle fork (2) is connected with the clamping end fork (4) in a sliding mode.
6. The dual depth hooking fork for a stacker of claim 5 wherein: the one-level middle fork (2) and the clamping end fork (4) are located on the same side of the two-level middle fork (2), the driving end fork (1) is provided with a driving fork seat (101), and the one-level middle fork (2), the two-level middle fork (3) and the clamping end fork (4) move into the driving fork seat (101) when retracting.
7. The stacker of claim 1 further comprising a dual depth hooking fork, wherein: the clamping end fork is characterized in that two ends of a clamping fork plate (402) of the clamping end fork (4) are respectively provided with a shifting finger (405) and a shifting finger driving device (406), the shifting finger (405) is vertically arranged on the clamping fork plate (402) and is driven to rotate by the shifting finger driving device (406) positioned at the same end, two ends of the clamping fork plate (402) are respectively provided with a mechanical stop block (404) for limiting the rotation range of the shifting finger (405), and a mounting seat of any shifting finger driving device (406) is provided with an inductive switch (403) for detecting whether the clamping fork plate rotates in place or not.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811329774.3A CN111169877A (en) | 2018-11-09 | 2018-11-09 | Double-deep-position hooking fork for stacking machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811329774.3A CN111169877A (en) | 2018-11-09 | 2018-11-09 | Double-deep-position hooking fork for stacking machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111169877A true CN111169877A (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811329774.3A Withdrawn CN111169877A (en) | 2018-11-09 | 2018-11-09 | Double-deep-position hooking fork for stacking machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111169877A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111891622A (en) * | 2020-09-08 | 2020-11-06 | 广东博智林机器人有限公司 | Hook-pull access device and stereoscopic warehouse |
| CN112079301A (en) * | 2020-07-23 | 2020-12-15 | 上海宇航***工程研究所 | Integrated two-way flexible fork of comb that blocks |
| CN113044769A (en) * | 2021-04-12 | 2021-06-29 | 劢微机器人科技(深圳)有限公司 | Omnidirectional forklift attachment and forklift |
| CN117416894A (en) * | 2023-11-28 | 2024-01-19 | 浙江中扬立库技术有限公司 | Double-extension clamping type fork |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101648689A (en) * | 2009-06-25 | 2010-02-17 | 上海精星仓储设备工程有限公司 | Superimposed pallet fork |
| CN107055409A (en) * | 2017-03-27 | 2017-08-18 | 太仓爱致递机器人自动化有限公司 | A kind of both arms are double to stretch a pellet fork device |
| CN207748798U (en) * | 2017-12-28 | 2018-08-21 | 广州番禺职业技术学院 | A kind of shuttle for tiered warehouse facility |
-
2018
- 2018-11-09 CN CN201811329774.3A patent/CN111169877A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101648689A (en) * | 2009-06-25 | 2010-02-17 | 上海精星仓储设备工程有限公司 | Superimposed pallet fork |
| CN107055409A (en) * | 2017-03-27 | 2017-08-18 | 太仓爱致递机器人自动化有限公司 | A kind of both arms are double to stretch a pellet fork device |
| CN207748798U (en) * | 2017-12-28 | 2018-08-21 | 广州番禺职业技术学院 | A kind of shuttle for tiered warehouse facility |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112079301A (en) * | 2020-07-23 | 2020-12-15 | 上海宇航***工程研究所 | Integrated two-way flexible fork of comb that blocks |
| CN111891622A (en) * | 2020-09-08 | 2020-11-06 | 广东博智林机器人有限公司 | Hook-pull access device and stereoscopic warehouse |
| CN111891622B (en) * | 2020-09-08 | 2022-02-08 | 广东博智林机器人有限公司 | Hook-pull access device and stereoscopic warehouse |
| CN113044769A (en) * | 2021-04-12 | 2021-06-29 | 劢微机器人科技(深圳)有限公司 | Omnidirectional forklift attachment and forklift |
| CN117416894A (en) * | 2023-11-28 | 2024-01-19 | 浙江中扬立库技术有限公司 | Double-extension clamping type fork |
| CN117416894B (en) * | 2023-11-28 | 2024-07-09 | 浙江中扬立库技术有限公司 | Double-extension clamping type fork |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200519 |
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