CN107298409B - Fork with flexible function - Google Patents
Fork with flexible function Download PDFInfo
- Publication number
- CN107298409B CN107298409B CN201710491710.2A CN201710491710A CN107298409B CN 107298409 B CN107298409 B CN 107298409B CN 201710491710 A CN201710491710 A CN 201710491710A CN 107298409 B CN107298409 B CN 107298409B
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- China
- Prior art keywords
- fork
- oil
- piston
- assembly
- oil channel
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/12—Platforms; Forks; Other load supporting or gripping members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/12—Platforms; Forks; Other load supporting or gripping members
- B66F9/122—Platforms; Forks; Other load supporting or gripping members longitudinally movable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
Abstract
The invention discloses a fork with a telescopic function. The fork body assembly is a structure that a vertical section and a horizontal section are combined into a right-angle shape, two parallel piston channels are arranged in the horizontal section, a piston body assembly is connected in each piston channel, the fork sleeve assembly is sleeved on the horizontal section of the fork body assembly, the piston body assembly pushes the fork sleeve assembly to move back and forth in a telescopic mode, and then the effective length of the extending end of the fork is adjusted. The invention is usually a pair of forks to use, can carry on the length of the synchronous adjustment fork when using two groups of oil circuits to control, have and stretch forward and retract the function. The invention has simple and reliable structure, easy realization, convenient installation and maintenance and lower cost.
Description
Technical Field
The invention belongs to the technical field of forklift design, and particularly relates to a fork with a telescopic function.
Background
The existing forklift basically uses more forks, so the forks are main loading and unloading tools. The length is fixed during use because the forks are forged. However, in daily loading and unloading operations, the shape and size of the goods are changed frequently, and if the length of the fork needs to be changed for loading and unloading goods with different sizes, the goods are inconvenient to change, the efficiency is low, and the operation is affected. The pallet fork can not be stretched, and is troublesome especially in the use process of a warehouse. On the other hand, the user needs to prepare the forks with different series lengths for use according to the needs, so that the use cost and the maintenance cost are increased for the client.
Disclosure of Invention
The invention mainly aims to solve the problems and provide a fork with a telescopic function.
A fork with a telescopic function comprises a fork body assembly 1, a piston body assembly 2 and a fork sleeve assembly 3. The fork body assembly 1 is a structure that a vertical section and a horizontal section are combined into a right-angle shape, an oil duct is arranged in the fork body assembly 1, two parallel piston channels are arranged in the horizontal section of the fork body assembly 1, and a piston body assembly 2 is connected in each of the two piston channels; the fork sleeve assembly 3 is sleeved on the horizontal section of the fork body assembly 1, and the piston body assembly 2 pushes the fork sleeve assembly 3 to move back and forth in a telescopic mode, so that the effective length of the extending end of the fork is adjusted.
The technical scheme for further limiting is as follows:
fork body assembly 1 includes the fork body 11, the fork body 11 makes up into the structure of right angle shape by vertical section and horizontal segment, the vertical section upper end tip of the fork body 11 is equipped with guard plate 12, guard plate 12 with the intermediate position of vertical section upper end tip is equipped with triangle-shaped strengthening rib 13, the vertical section upper portion of the fork body 11 is equipped with couple 15, the vertical section lower part of the fork body 11 is equipped with down couple 16. The end part of the horizontal section of the cargo fork body 11 is provided with two parallel sliding block fixing blocks 14, the outer side surfaces of the sliding block fixing blocks 14 are flush with the outer side surfaces of the end parts of the horizontal section of the cargo fork body 11, the side surface of the horizontal section of the cargo fork body 11 is provided with a plug 17, and the plug 17 is close to the joint of the vertical section and the horizontal section.
The cargo fork body 11 is provided with oil ducts in the vertical section and the horizontal section, the vertical section is provided with a first oil duct 111 and a second oil duct 112, and the two oil ducts are parallel to each other and arranged in the vertical direction. The first oil passage 111 extends to a rear end position inside the horizontal section, and the second oil passage 112 extends to a front end position inside the horizontal section. The two parallel piston channels are a third oil channel 113 and a fourth oil channel 114 longitudinally arranged on the horizontal section of the fork body 11, the third oil channel 113 and the fourth oil channel 114 are parallel to each other and are positioned between the first oil channel 111 and the second oil channel 112, the third oil channel 113 and the fourth oil channel 114 and the front end face of the horizontal section of the fork body 11 are provided with openings, and a guide sleeve 4 is arranged at the openings; the rear ends of the first oil channel 111, the third oil channel 113 and the fourth oil channel 114 are provided with transverse through oil channels, and the front end of the second oil channel, the front ends of the third oil channel 113 and the fourth oil channel 114 are provided with transverse through oil channels; the third oil passage 113 and the fourth oil passage 114 are each enclosed in one piece of the piston body assembly 2.
The piston body assembly 2 comprises a piston rod 21, a connecting lug 22, a piston 23, a supporting ring 24 and a sealing ring 25. The piston rod 21 is an elongated cylindrical rod, the front end of the piston rod 21 is provided with a connecting ear ring 22, the piston rod 21 is connected with the fork sleeve assembly 3 through the connecting ear ring 22, the rear part of the piston rod 21 is provided with a piston 23, and the piston 23 is connected with a support ring 24 and a sealing ring 25.
Goods fork cover assembly 3 is the box-like fork cover body 31 of one end open-ended cuboid, the open-ended one end of the fork cover body 31 is equipped with curb plate strengthening rib 32 and bottom plate strengthening rib 33, the other end of the fork cover body 31 is equipped with flat head 34 and two connecting pins 5, two connecting pin 5 both ends through connection are on the upper and lower plane of the fork cover body 31, the intermediate position of two connecting pins 5 is connected connecting earrings 22.
The sliding block fixing block 14 is provided with a guide movable block 6 made of nylon material.
The top of the vertical oil duct of the fork assembly 1 is provided with a straight joint 115, and the straight joint 115 is communicated with a forklift hydraulic oil path.
The upper and lower hooks 15 and 16 are connected to the fork carriage 8 on the forklift mast 7, respectively, and can be moved left and right.
The beneficial technical effects of the invention are as follows:
(1) The invention usually uses a pair of forks in a matched mode, can synchronously adjust the length of the forks when being controlled by two groups of oil ways and has the functions of extending forwards and retracting.
(2) The strength requirement of the fork is met, and loading, unloading and carrying of goods can be carried out according to the bearing requirement of the fork truck as common forks.
(3) The structure is simple and reliable, the realization is easy, the installation and the maintenance are convenient, and the cost is lower.
Drawings
FIG. 1 is a sectional view of the structure of the present invention.
FIG. 2 is a schematic view of the fork assembly of the present invention.
FIG. 3 is a schematic view of a fork sleeve assembly of the present invention.
FIG. 4 is a schematic view of a piston body assembly of the present invention.
FIG. 5 is a schematic view of a vertical section oil circuit according to the present invention.
FIG. 6 is a schematic diagram of the horizontal section of the oil circuit of the present invention.
FIG. 7 is a schematic view of the invention in an extended state.
FIG. 8 is a schematic view of the present invention in use.
Number in the figure:
the fork assembly comprises a fork body assembly 1, a fork body 11, a first oil channel 111, a second oil channel 112, a third oil channel 113, a fourth oil channel 114, a through joint 115, a protection plate 12, a reinforcing rib 13, a sliding block fixing block 14, an upper hook 15, a lower hook 16 and a plug 17; the piston comprises a piston body assembly 2, a piston rod 21, a connecting earring 22, a piston 23, a support ring 24 and a sealing ring 25;
the cargo fork sleeve assembly 3, the fork sleeve body 31, the side plate reinforcing ribs 32, the bottom plate reinforcing ribs 33 and the flat head 34;
the guide sleeve 4, the connecting pin 5, the guide slide block 6, the portal frame 7 and the fork frame 8.
Detailed Description
The invention will be further described by way of examples with reference to the accompanying drawings.
Examples
Referring to fig. 1, a fork with a telescopic function comprises a fork body assembly 1, a piston body assembly 2, a fork sleeve assembly 3, a guide sleeve 4, a connecting pin 5 and a guide sliding block 6.
Referring to fig. 2, the fork body assembly 1 includes a fork body 11, the fork body 11 is a right-angle structure formed by combining a vertical section and a horizontal section, a protection plate 12 is arranged at an upper end of the vertical section of the fork body 11, a triangular reinforcing rib 13 is arranged between the protection plate 12 and the upper end of the vertical section, an upper hook 15 is arranged at an upper portion of the vertical section of the fork body 11, and a lower hook 16 is arranged at a lower portion of the vertical section of the fork body 11. The tip of the horizontal segment of the freight fork body 11 is equipped with two parallel arrangement's slider fixed block 14, the lateral surface of slider fixed block 14 with the lateral surface parallel and level of the tip of the horizontal segment of the freight fork body 11, slider fixed block 14 is equipped with the direction loose piece 6 of making with the nylon materials. The sliding block 6 made of nylon material is arranged between the fork sleeve and the fork body, so that the frictional resistance is reduced, the pressure of a hydraulic system is also reduced, and the fork is safer and more reliable. The side surface of the horizontal section of the fork body 11 is provided with a plug 17, and the plug 17 is close to the joint of the vertical section and the horizontal section. The plug 17 is required by the oil duct processing technology and has the functions of discharging and cleaning the oil duct.
Referring to fig. 5 and 6, oil passages are provided inside the vertical and horizontal sections of the fork body 11, and the vertical section is provided with a first oil passage 111 and a second oil passage 112, which are parallel to each other and arranged in a vertical direction. The first oil passage 111 extends to a rear end position inside the horizontal section, and the second oil passage 112 extends to a front end position inside the horizontal section. The two parallel piston channels are a third oil channel 113 and a fourth oil channel 114 longitudinally arranged on the horizontal section of the fork body 11, the third oil channel 113 and the fourth oil channel 114 are parallel to each other and are positioned between the first oil channel 111 and the second oil channel 112, the third oil channel 113 and the fourth oil channel 114 and the front end face of the horizontal section of the fork body 11 are provided with openings, and a guide sleeve 4 is arranged at the openings; the rear ends of the first oil channel 111, the third oil channel 113 and the fourth oil channel 114 are provided with transverse through oil channels, and the front ends of the second oil channel, the third oil channel 113 and the fourth oil channel 114 are provided with transverse through oil channels; the third oil passage 113 and the fourth oil passage 114 are each enclosed in one piece of the piston body assembly 2. The top of the vertical oil passage of the fork assembly 1 is provided with a straight joint 115, and the straight joint 115 is communicated with a hydraulic oil path of the forklift.
Referring to fig. 3, the cargo fork sleeve assembly 3 is a box-shaped fork sleeve body 31 with an open end, the open end of the fork sleeve body 31 is provided with a side plate reinforcing rib 32 and a bottom plate reinforcing rib 33, the other end of the fork sleeve body 31 is provided with a flat head 34 and two connecting pins 5, two ends of each connecting pin 5 are connected to the upper plane and the lower plane of the fork sleeve body 31 in a penetrating manner, and the middle positions of the two connecting pins 5 are connected with the connecting ear rings 22.
Referring to fig. 4, the piston body assembly 2 includes a piston rod 21, a connecting lug 22, a piston 23, a support ring 24 and a seal ring 25. The piston rod 21 is an elongated cylindrical rod, the front end of the piston rod 21 is provided with a connecting ear ring 22, the piston rod 21 is connected with the fork sleeve assembly 3 through the connecting ear ring 22, the rear part of the piston rod 21 is provided with a piston 23, and the piston 23 is connected with a support ring 24 and a sealing ring 25. The piston body assembly 2 is provided with a support ring 24 and a seal ring 25, the support ring 24 can ensure the stability of the piston, and the seal rings 25 are arranged on the left side and the right side of the piston, so that two independent oil cavities are formed in the front and the back of the third oil channel and the fourth oil channel respectively, and oil can be introduced into the two sides of the third oil channel and the fourth oil channel, so that the double-acting oil cylinder is formed.
Referring to fig. 6 and 7, in use, when the first oil passage 111 enters hydraulic oil, the rear oil cavity of the piston body assembly 2 enters the hydraulic oil, and the second oil passage 112 is an oil return oil passage, at this time, the piston body assembly 2 pushes the fork sleeve assembly 3 to move forwards and extend. On the contrary, when the second oil passage 112 enters hydraulic oil, the front oil cavity of the piston body assembly 2 enters the hydraulic oil, and the first oil passage is an oil return oil passage, at this time, the piston body assembly 2 pushes the fork sleeve assembly 3 to move backwards and retract.
Referring to fig. 8, the upper and lower hooks 15 and 16 are coupled to the fork carriage 8 of the forklift mast 7, respectively, and can be moved left and right. The pair of forks are used in pairs, the length of the forks can be synchronously adjusted when the forks are controlled by two groups of oil ways, and the fork type hydraulic fork has the functions of extending forwards and retracting.
The above description is not intended to limit the present invention in any way on the structure and shape thereof. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are still within the scope of the technical solution of the present invention.
Claims (5)
1. The utility model provides a fork with flexible function which characterized in that: the fork comprises a fork body assembly (1), a piston body assembly (2) and a fork sleeve assembly (3); the cargo fork assembly (1) is a right-angle structure formed by combining a vertical section and a horizontal section, an oil duct is arranged in the cargo fork assembly (1), two parallel piston channels are arranged in the horizontal section of the cargo fork assembly (1), and a piston body assembly (2) is connected in each piston channel; the goods fork sleeve assembly (3) is sleeved on the horizontal section of the goods fork body assembly (1), the piston body assembly (2) pushes the goods fork sleeve assembly (3) to move back and forth in a telescopic mode, and then the effective length of the extending end of the goods fork is adjusted;
the cargo fork body assembly (1) comprises a cargo fork body (11), the cargo fork body (11) is formed by combining a vertical section and a horizontal section into a right-angle structure, a protection plate (12) is arranged at the upper end part of the vertical section of the cargo fork body (11), a triangular reinforcing rib (13) is arranged in the middle of the protection plate (12) and the upper end part of the vertical section, an upper hook (15) is arranged at the upper part of the vertical section of the cargo fork body (11), and a lower hook (16) is arranged at the lower part of the vertical section of the cargo fork body (11); two sliding block fixing blocks (14) which are arranged in parallel are arranged at the end part of the horizontal section of the cargo fork body (11), the outer side surface of each sliding block fixing block (14) is flush with the outer side surface of the end part of the horizontal section of the cargo fork body (11), a plug (17) is arranged on the side surface of the horizontal section of the cargo fork body (11), and the plug (17) is close to the joint of the vertical section and the horizontal section;
oil ducts are arranged in the vertical section and the horizontal section of the cargo fork body (11), the vertical section is provided with a first oil duct (111) and a second oil duct (112), and the two oil ducts are parallel to each other and are arranged in the vertical direction; the first oil channel (111) extends to the rear end position in the horizontal section, and the second oil channel (112) extends to the front end position in the horizontal section; the two parallel piston channels are a third oil channel (113) and a fourth oil channel (114) which are longitudinally arranged at the horizontal section of the fork body (11), the third oil channel (113) and the fourth oil channel (114) are parallel to each other and are positioned between the first oil channel (111) and the second oil channel (112), the third oil channel (113) and the fourth oil channel (114) and the front end face of the horizontal section of the fork body (11) are provided with openings, and guide sleeves (4) are arranged at the openings; the rear ends of the first oil channel (111), the third oil channel (113) and the fourth oil channel (114) are provided with transverse through oil channels, and the front end of the second oil channel, the front ends of the third oil channel (113) and the fourth oil channel (114) are provided with transverse through oil channels; a piston body assembly (2) is respectively arranged in the third oil channel (113) and the fourth oil channel (114);
the piston body assembly (2) comprises a piston rod (21), a connecting lug ring (22), a piston (23), a support ring (24) and a sealing ring (25); the fork sleeve assembly is characterized in that the piston rod (21) is a long and thin cylindrical rod, a connecting lug ring (22) is arranged at the front end of the piston rod (21), the piston rod (21) is connected with the fork sleeve assembly (3) through the connecting lug ring (22), a piston (23) is arranged at the rear part of the piston rod (21), and a support ring (24) and a sealing ring (25) are connected to the piston (23).
2. The fork with telescopic function as claimed in claim 1, wherein: fork cover assembly (3) are the box-like fork cover body (31) of one end open-ended cuboid, the fork cover body (31) open-ended one end is equipped with curb plate strengthening rib (32) and bottom plate strengthening rib (33), the other end of the fork cover body (31) is equipped with flat head (34) and two connecting pin (5), two connecting pin (5) both ends through connection are on the upper and lower plane of the fork cover body (31), the intermediate position of two connecting pin (5) is connected connect earrings (22).
3. The fork with telescopic function as claimed in claim 1, wherein: the sliding block fixing block (14) is provided with a guide movable block (6) made of a nylon material.
4. The fork with telescopic function as claimed in claim 1, wherein: the top position of the vertical oil duct section of the fork assembly (1) is provided with a straight joint (115) which is communicated with a hydraulic oil path of the forklift through the straight joint (115).
5. The fork with telescopic function as claimed in claim 1, wherein: the upper hook (15) and the lower hook (16) are respectively connected with a fork frame (8) on a forklift gantry (7) and can move left and right.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710491710.2A CN107298409B (en) | 2017-06-20 | 2017-06-20 | Fork with flexible function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710491710.2A CN107298409B (en) | 2017-06-20 | 2017-06-20 | Fork with flexible function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107298409A CN107298409A (en) | 2017-10-27 |
| CN107298409B true CN107298409B (en) | 2023-03-14 |
Family
ID=60134989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710491710.2A Active CN107298409B (en) | 2017-06-20 | 2017-06-20 | Fork with flexible function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107298409B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108313936A (en) * | 2018-03-12 | 2018-07-24 | 安徽工程大学 | It is a kind of that there is the stacker device turned to big stroke pallet fork |
| US11365103B2 (en) | 2019-03-27 | 2022-06-21 | Hyster-Yale Group, Inc. | Modular fork assembly for a material-handling vehicle |
| CN110723691A (en) * | 2019-09-26 | 2020-01-24 | 广西贺州市华鸿新材料有限公司 | Novel fork mechanism of fork truck for calcium carbonate production |
| KR20220144391A (en) | 2020-02-21 | 2022-10-26 | 크라운 이큅먼트 코포레이션 | Illuminated floor on side of material handling vehicle indicating restricted or non-restricted area |
| CN112551445A (en) * | 2020-12-28 | 2021-03-26 | 湖州南浔军友叉车有限公司 | Extensible forklift fork |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0499988A2 (en) * | 1991-02-21 | 1992-08-26 | ACHAMMER-TRITTHART-PARTNER ARCHITEKTEN & INGENIEURE | Fork lift truck |
| CN1737382A (en) * | 2005-09-09 | 2006-02-22 | 郝安阶 | Dust-proof type hydraulic ram |
| CN202124451U (en) * | 2011-05-17 | 2012-01-25 | 青岛港（集团）有限公司 | Frozen product thruster |
| CN203006869U (en) * | 2013-01-10 | 2013-06-19 | 辽宁鑫丰矿电设备制造有限公司 | Special buffer telescopic fork device for bracket mounting forklift |
| CN204628145U (en) * | 2015-01-09 | 2015-09-09 | 巢湖学院 | A kind of integrated oil cylinders |
| CN104986691A (en) * | 2015-08-06 | 2015-10-21 | 遂宁市长丰机械科技有限公司 | Combined-fork-arm type fork truck |
-
2017
- 2017-06-20 CN CN201710491710.2A patent/CN107298409B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0499988A2 (en) * | 1991-02-21 | 1992-08-26 | ACHAMMER-TRITTHART-PARTNER ARCHITEKTEN & INGENIEURE | Fork lift truck |
| CN1737382A (en) * | 2005-09-09 | 2006-02-22 | 郝安阶 | Dust-proof type hydraulic ram |
| CN202124451U (en) * | 2011-05-17 | 2012-01-25 | 青岛港（集团）有限公司 | Frozen product thruster |
| CN203006869U (en) * | 2013-01-10 | 2013-06-19 | 辽宁鑫丰矿电设备制造有限公司 | Special buffer telescopic fork device for bracket mounting forklift |
| CN204628145U (en) * | 2015-01-09 | 2015-09-09 | 巢湖学院 | A kind of integrated oil cylinders |
| CN104986691A (en) * | 2015-08-06 | 2015-10-21 | 遂宁市长丰机械科技有限公司 | Combined-fork-arm type fork truck |
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| Publication number | Publication date |
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| CN107298409A (en) | 2017-10-27 |
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