CN212893757U - Three-stage full-free portal frame with four-piece valve oil way assembly - Google Patents
Three-stage full-free portal frame with four-piece valve oil way assembly Download PDFInfo
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- CN212893757U CN212893757U CN202020818047.XU CN202020818047U CN212893757U CN 212893757 U CN212893757 U CN 212893757U CN 202020818047 U CN202020818047 U CN 202020818047U CN 212893757 U CN212893757 U CN 212893757U
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- oil pipe
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- frame
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Abstract
The utility model discloses a tertiary full free portal with four valve oil circuit assemblies, it includes the outer portal, well portal, interior portal, the fork frame, first piece valve oil circuit assembly, second piece valve oil circuit assembly, third piece valve oil circuit assembly, fourth piece valve oil circuit assembly, well door sprocket is installed on the rear end left side upper portion of well portal, the well door chain takes turns to and is equipped with well door chain, first piece valve oil circuit assembly arranges in the rear end right side of well portal, third piece valve oil circuit assembly arranges in the rear end left side of well portal and the width direction middle zone of interior portal, fourth piece valve oil circuit assembly arranges in the right side inner of well portal and the width direction middle zone of interior portal; the advantage is that its fork truck accessory that can assemble and use two sets of oil circuits, and the sight of the width direction middle zone of well portal blocks the degree for a short time.
Description
Technical Field
The utility model relates to a fork truck portal especially relates to a tertiary complete free portal with four piece valve oil circuit assemblies.
Background
The forklift mast is a main working part of the forklift, and at present, more three-stage full-free masts are used.
The existing wide-view-field three-level full-free portal frame mostly adopts a three-piece valve oil path assembly arrangement structure, namely, a first piece of valve oil path assembly, a second piece of valve oil path assembly and a third piece of valve oil path assembly are arranged, a middle door chain wheel used for driving an inner portal frame to move up and down on a middle portal frame and a middle door chain wound on the middle door chain wheel are arranged at the inner end of the right side of the middle portal frame, a first oil pipe roller of the first piece of valve oil path assembly is arranged on the middle door chain wheel, the middle door chain wheel is coaxial with the first oil pipe roller, the axial direction is consistent with the width direction of the middle portal frame, a third oil pipe roller of the third piece of valve oil path assembly is arranged at the inner end of the left side of the middle portal frame, and the third oil pipe roller is. The forklift mast with the structure can only be assembled with forklift accessories using one group of oil ways, and many forklift accessories needing two groups of oil ways cannot be arranged on the forklift mast with the structure, so that the forklift mast with the structure is limited in use and poor in universality; the middle door chain wheel, the first oil pipe roller and the third oil pipe roller in the forklift gantry with the structure are positioned on two sides of the middle area of the middle gantry in the width direction, and the sight of a driver is shielded to a great extent.
Disclosure of Invention
The utility model aims to solve the technical problem that a tertiary full free portal with four valve oil circuit assemblies is provided, its fork truck accessory that can assemble and use two sets of oil circuits, and the width direction middle zone's of well portal sight shelters from the degree for a short time.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a tertiary complete free portal with four piece valve oil circuit assemblies which characterized in that: the forklift truck comprises an outer gantry, a middle gantry, an inner gantry, a fork frame, a first valve oil path assembly, a second valve oil path assembly, a third valve oil path assembly and a fourth valve oil path assembly, wherein the outer gantry is fixedly connected with a forklift truck body, rear oil cylinders are vertically and symmetrically arranged at the two sides of the rear end of the outer gantry, oil cylinder rods of the rear oil cylinders face upwards and are correspondingly connected with the upper parts of the two sides of the rear end of the middle gantry, the telescopic driving of the oil cylinder rods of the rear oil cylinders drives the middle gantry to move up and down on the outer gantry, a middle door chain wheel is installed at the upper part of the left side of the rear end of the middle gantry, a middle door chain is wound on the middle door chain wheel, one end of the middle door chain is connected with the upper part of the left side of the rear end of the outer gantry, the other end of the middle door chain is connected with the lower part of the left side of the rear end of the inner gantry, and the middle door chain wheel drives the inner gantry to move up and down along with the cooperation of the middle door chain The middle portal frame is vertically provided with a front oil cylinder in the middle area in the width direction, an oil cylinder rod of the front oil cylinder faces upwards and is connected with an inner door chain wheel, an inner door chain is wound on the inner door chain wheel, one end of the inner door chain is connected with the middle part of the inner portal frame, the other end of the inner door chain is connected with the middle part of the rear end of the fork frame, the oil cylinder rod of the front oil cylinder is telescopically combined with the inner door chain wheel and the inner door chain to drive the fork frame to move up and down on the inner portal frame to form a movable pulley structure, the three-level full-freedom portal frame can move up and down through the assembly structure of the components, the first sheet valve oil circuit assembly is arranged on the right side of the rear end of the middle portal frame, and the third sheet valve oil circuit assembly is arranged on the left side of the rear end of the middle portal frame and in the width direction of the inner portal frame And the fourth valve oil way assembly is arranged in the middle area of the middle door frame and the middle area of the inner door frame in the width direction.
The top of the oil cylinder rod of the front oil cylinder is also connected with a common oil pipe roller, the third sheet valve oil way assembly consists of a third oil pipe roller, a third outer oil pipe wound on the third oil pipe roller and a third inner oil pipe wound on the common oil pipe roller, the third oil pipe roller is fixed on the middle door chain wheel, one end of the third outer oil pipe is connected with a first steel pipe joint, the first steel pipe joint is fixed on the middle part of the left side of the rear end of the outer door frame, the other end of the third outer oil pipe is connected with a second steel pipe joint, the second steel pipe joint is fixed on the lower part of the left side of the rear end of the middle door frame, one end of the third inner oil pipe is communicated with the third outer oil pipe through the second steel pipe joint, and the other end of the third inner oil pipe is connected with a third steel pipe joint, the third steel pipe joint is fixed at the lower part of the rear end of the fork frame. The third oil pipe roller is coaxially fixed on the middle door chain wheel, and the middle door chain wheel is arranged on the left side of the rear end of the middle door frame, namely the third oil pipe roller is positioned at the rear end of the middle door frame, so that a third outer oil pipe wound on the third oil pipe roller can not shield the working visual field of the middle area in the width direction; the connection steel pipe joints at the two ends of the third outer side oil pipe and the third inner side oil pipe respectively and the fixation of the steel pipe joints both adopt the prior art.
The fourth oil pipe assembly comprises a fourth oil pipe roller, a fourth outer oil pipe wound on the fourth oil pipe roller and a fourth inner oil pipe wound on the common oil pipe roller, the fourth oil pipe roller is fixed at the bottom of a cross beam of the middle door frame and close to the right inner end of the middle door frame, the axial direction of the fourth oil pipe roller is consistent with the width direction of the middle door frame, one end of the fourth outer oil pipe is connected with a fourth steel pipe joint, the fourth steel pipe joint is fixed in the middle of the right side of the rear end of the outer door frame, the other end of the fourth outer oil pipe is connected with a fifth steel pipe joint, the fifth steel pipe joint is fixed on the lower part of the right side of the rear end of the middle door frame, one end of the fourth inner oil pipe is communicated with the fourth outer oil pipe through the fifth steel pipe joint, the other end of the fourth inner side oil pipe is connected with a sixth steel pipe joint, and the sixth steel pipe joint is fixed to the lower portion of the rear end of the fork frame. The fourth oil pipe roller is fixed at the bottom of the cross beam of the middle portal frame and is close to the right inner end of the middle portal frame, and the axis direction of the fourth oil pipe roller is consistent with the width direction of the middle portal frame, so that the fourth oil pipe roller and the fourth outer oil pipe shield the working view of the middle area in the width direction, but the shielding degree is small.
The first sheet valve oil path assembly is composed of a first oil pipe roller and a first oil pipe wound on the first oil pipe roller, the first oil pipe roller is fixed to the upper portion of the right side of the rear end of the middle door frame, one end of the first oil pipe is connected with a seventh steel pipe joint, the seventh steel pipe joint is fixed to the lower portion of the rear end of the inner door frame, the other end of the first oil pipe is connected with an eighth steel pipe joint, and the eighth steel pipe joint is fixed to the lower portion of the rear end of the outer door frame. Because the fourth sheet valve oil way assembly occupies a small space at the inner end of the right side of the middle portal frame, in order to ensure a wide working view, a first oil pipe roller of the first sheet valve oil way assembly is fixed at the upper part of the right side of the rear end of the middle portal frame, and the working view of the middle area in the width direction cannot be shielded.
Compared with the prior art, the utility model has the advantages of:
keeping the arrangement position of the second sheet valve oil path assembly unchanged, arranging the first sheet valve oil path assembly on the right side of the rear end of the middle portal frame, arranging a middle door chain wheel and a middle door chain on the left side of the rear end of the middle portal frame, arranging a third sheet valve oil path assembly on the left side of the rear end, additionally arranging a fourth sheet valve oil path assembly at the inner end of the right side of the middle portal frame, and enabling the three-stage fully-free portal frame to be assembled with a forklift accessory using two groups of oil paths due to the fact that the fourth sheet valve oil path assembly is additionally arranged; because the first valve oil path assembly, the middle door chain wheel, the middle door chain and the third valve oil path assembly do not occupy the working view space in the middle area in the width direction, and the added fourth valve oil path assembly is close to the inner end of the right side of the middle door frame and has little interference on the working view, the sight shielding degree of the middle area in the width direction of the middle door frame is greatly reduced, and the working view is wider.
Drawings
Fig. 1 is a schematic perspective view of a three-level fully-free gantry of the present invention;
fig. 2 is a schematic three-dimensional structure diagram of a three-level fully-free gantry of the present invention;
fig. 3 is a three-dimensional structure schematic diagram of the three-stage fully-free gantry of the present invention;
fig. 4 is a schematic view of the three-dimensional structure of the three-stage fully-free gantry of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
The utility model provides a three-level full-free portal frame with four-piece valve oil circuit assembly, as shown in the figure, it includes outer portal frame 1, middle portal frame 2, inner portal frame 3, fork frame 4, first piece valve oil circuit assembly 5, second piece valve oil circuit assembly (not shown in the figure), third piece valve oil circuit assembly 6, fourth piece valve oil circuit assembly 7, outer portal frame 1 is linked with the fork truck body and is fixed, rear oil cylinder 81 is set up symmetrically and vertically in the rear end both sides of outer portal frame 1, the oil cylinder pole of two rear oil cylinder 81 is up and is connected with the rear end both sides upper portion of middle portal frame 2 correspondingly, the flexible drive of the oil cylinder pole of rear oil cylinder 81 portal frame 2 is in the ascending and descending motion of outer portal frame 1, middle door sprocket 82 is installed on the rear end left side upper portion of middle portal frame 2, middle door sprocket 82 is wound with middle door chain 83, one end of middle door chain 83 is connected with the rear end left side upper portion of outer portal frame 1, the other end of middle door chain 83 is connected with the rear end left side lower part of, the lifting motion of the middle portal frame 2 drives the inner portal frame 3 to lift and descend on the middle portal frame 2 under the coordination of the middle portal chain wheel 82 and the middle portal chain 83 to form a movable pulley structure, a front oil cylinder 84 is vertically arranged on the middle area of the width direction of the inner portal frame 3, an oil cylinder rod of the front oil cylinder 84 faces upwards and is connected with an inner portal chain wheel 85, an inner portal chain 86 is wound on the inner portal chain wheel 85, one end of the inner portal chain 86 is connected with the middle part of the inner portal frame 3, the other end of the inner portal chain 86 is connected with the middle part of the rear end of the fork frame 4, the telescopic combination of the oil cylinder rod of the front oil cylinder 84, the inner portal chain wheel 85 and the inner portal chain 86 drive the fork frame 4 to lift and descend on the inner portal frame 3 to form a movable pulley structure, the lifting motion of the three-level full-free portal frame is realized through the assembly structure of the components, the first sheet valve oil circuit assembly 5 is arranged on the right side of the rear end of the middle portal frame 2, and the third sheet And a fourth valve oil way assembly 7 is arranged at the inner end of the right side of the middle portal frame 2 and the middle area of the width direction of the inner portal frame 3.
In this embodiment, the top of the cylinder rod of the front cylinder 84 is further connected to a common oil pipe roller 87, the third sheet valve oil path assembly 6 is composed of a third oil pipe roller 61, a third outer oil pipe 62 wound on the third oil pipe roller 61, the third inner side oil pipe 63 is wound on the common oil pipe roller 87, the third oil pipe roller 61 is fixed on the middle door chain wheel 82, one end of the third outer side oil pipe 62 is connected with a first steel pipe joint 91, the first steel pipe joint 91 is fixed on the middle portion of the left side of the rear end of the outer gantry 1, the other end of the third outer side oil pipe 62 is connected with a second steel pipe joint 92, the second steel pipe joint 92 is fixed on the lower portion of the left side of the rear end of the middle gantry 2, one end of the third inner side oil pipe 63 is communicated with the third outer side oil pipe 62 through the second steel pipe joint 92, the other end of the third inner side oil pipe 63 is connected with a third steel pipe joint (not shown in the figure), and the third steel pipe joint is. The third oil pipe roller 61 is coaxially fixed on the middle door chain wheel 82, and as the middle door chain wheel 82 is installed on the left side of the rear end of the middle door frame 2, namely the third oil pipe roller 61 is positioned at the rear end of the middle door frame 2, the third outer oil pipe 62 wound on the third oil pipe roller 61 can not shield the working view of the middle area in the width direction; the connection and fixation of the steel pipe joints at the two ends of the third outer oil pipe 62 and the third inner oil pipe 63 are all the prior art.
In this embodiment, the fourth sheet valve oil path assembly 7 is composed of a fourth oil pipe roller 71, a fourth outer oil pipe 72 wound on the fourth oil pipe roller 71, and a fourth inner oil pipe 73 wound on a common oil pipe roller 87, the fourth oil pipe roller 71 is fixed at the bottom of the cross beam of the middle gantry 2 and close to the right inner end of the middle gantry 2, the axial direction of the fourth oil pipe roller 71 is consistent with the width direction of the middle gantry 2, one end of the fourth outer oil pipe 72 is connected with a fourth steel pipe joint 94, the fourth steel pipe joint 94 is fixed on the middle portion of the right side of the rear end of the outer gantry 1, the other end of the fourth outer oil pipe 72 is connected with a fifth steel pipe joint 95, the fifth steel pipe joint 95 is fixed on the lower portion of the right side of the rear end of the middle gantry 2, one end of the fourth inner oil pipe 73 is communicated with the fourth outer oil pipe 72 through the fifth steel pipe joint 95, the other end of the fourth inner oil pipe 73 is connected with a, the sixth steel pipe joint is fixed to the lower rear end of the fork carriage 4. The fourth oil pipe roller 71 is fixed at the bottom of the cross beam of the middle portal frame 2 and close to the right inner end of the middle portal frame 2, and the axial direction of the fourth oil pipe roller 71 is consistent with the width direction of the middle portal frame 2, so that the fourth oil pipe roller 71 and the fourth outer oil pipe 72 shield the working view of the middle area in the width direction, but the shielding degree is small.
In this embodiment, the first sheet valve oil path assembly 5 is composed of a first oil pipe roller 51 and a first oil pipe 52 wound on the first oil pipe roller 51, the first oil pipe roller 51 is fixed on the upper portion of the right side of the rear end of the middle gantry 2, one end of the first oil pipe 52 is connected with a seventh steel pipe joint 97, the seventh steel pipe joint 97 is fixed on the lower portion of the rear end of the inner gantry 3, the other end of the first oil pipe 52 is connected with an eighth steel pipe joint 98, and the eighth steel pipe joint 98 is fixed on the lower portion of the rear end of the outer gantry 1. Because the fourth sheet valve oil path assembly 7 occupies a small space at the inner end of the right side of the middle portal frame 2, in order to ensure a wide working view, the first oil pipe roller 51 of the first sheet valve oil path assembly 5 is fixed at the upper part of the right side of the rear end of the middle portal frame 2, and the working view of the middle area in the width direction cannot be shielded.
In the present embodiment, the rear cylinder 81 and the front cylinder 84 are both conventional cylinders; the middle door chain wheel 82 and the inner door chain wheel 85 both adopt the existing chain wheels; the middle door chain 83 and the inner door chain 86 both adopt the existing chains; the common oil pipe roller 87, the first oil pipe roller 51, the third oil pipe roller 61 and the fourth oil pipe roller 71 all adopt the existing rolling wheels with grooves; the third outer oil pipe 62, the third inner oil pipe 63, the fourth outer oil pipe 72, the fourth inner oil pipe 73 and the first oil pipe 52 are all existing oil pipes; the first steel pipe joint 91, the second steel pipe joint 92, the third steel pipe joint, the fourth steel pipe joint 94, the fifth steel pipe joint 95, the sixth steel pipe joint, the seventh steel pipe joint 97, and the eighth steel pipe joint 98 all adopt existing steel pipe joints.
Claims (4)
1. The utility model provides a tertiary complete free portal with four piece valve oil circuit assemblies which characterized in that: the hydraulic lifting mechanism comprises an outer portal frame, a middle portal frame, an inner portal frame, a fork frame, a first valve oil path assembly, a second valve oil path assembly, a third valve oil path assembly and a fourth valve oil path assembly, wherein rear oil cylinders are symmetrically and vertically arranged on two sides of the rear end of the outer portal frame, oil cylinder rods of the two rear oil cylinders face upwards and are correspondingly connected with the upper parts of two sides of the rear end of the middle portal frame, the oil cylinder rods of the rear oil cylinders stretch to drive the middle portal frame to move up and down on the outer portal frame, a middle portal chain wheel is mounted on the upper part of the left side of the rear end of the middle portal frame, a middle portal chain is wound on the middle portal chain wheel, one end of the middle portal chain wheel is connected with the upper part of the left side of the rear end of the outer portal frame, the other end of the middle portal chain wheel is connected with the lower part of the left side of the rear end of the inner portal frame, and the middle portal chain wheel is matched with the middle portal chain wheel to drive the inner portal frame to move up and down on the middle portal frame along with, a front oil cylinder is vertically arranged on the middle area of the inner gantry in the width direction, an oil cylinder rod of the front oil cylinder is upward and is connected with an inner door chain wheel, an inner door chain is wound on the inner door chain wheel, one end of the inner door chain is connected with the middle part of the inner door frame, the other end of the inner door chain is connected with the middle part of the rear end of the fork frame, the telescopic combination of the oil cylinder rod of the front oil cylinder and the matching of the inner door chain wheel and the inner door chain drives the fork frame to move up and down on the inner door frame, the first valve oil path assembly is arranged on the right side of the rear end of the middle door frame, the third valve oil path assembly is arranged on the left side of the rear end of the middle door frame and the middle area of the inner door frame in the width direction, the fourth valve oil path assembly is arranged at the inner end of the right side of the middle door frame and the middle area of the inner door frame in the width direction.
2. The three-stage fully free portal frame with the four-piece valve oil way assembly according to claim 1, wherein: the top of the oil cylinder rod of the front oil cylinder is also connected with a common oil pipe roller, the third sheet valve oil way assembly consists of a third oil pipe roller, a third outer oil pipe wound on the third oil pipe roller and a third inner oil pipe wound on the common oil pipe roller, the third oil pipe roller is fixed on the middle door chain wheel, one end of the third outer oil pipe is connected with a first steel pipe joint, the first steel pipe joint is fixed on the middle part of the left side of the rear end of the outer door frame, the other end of the third outer oil pipe is connected with a second steel pipe joint, the second steel pipe joint is fixed on the lower part of the left side of the rear end of the middle door frame, one end of the third inner oil pipe is communicated with the third outer oil pipe through the second steel pipe joint, and the other end of the third inner oil pipe is connected with a third steel pipe joint, the third steel pipe joint is fixed at the lower part of the rear end of the fork frame.
3. The three-stage fully free portal frame with the four-piece valve oil way assembly according to claim 2, wherein: the fourth oil pipe assembly comprises a fourth oil pipe roller, a fourth outer oil pipe wound on the fourth oil pipe roller and a fourth inner oil pipe wound on the common oil pipe roller, the fourth oil pipe roller is fixed at the bottom of a cross beam of the middle door frame and close to the right inner end of the middle door frame, the axial direction of the fourth oil pipe roller is consistent with the width direction of the middle door frame, one end of the fourth outer oil pipe is connected with a fourth steel pipe joint, the fourth steel pipe joint is fixed in the middle of the right side of the rear end of the outer door frame, the other end of the fourth outer oil pipe is connected with a fifth steel pipe joint, the fifth steel pipe joint is fixed on the lower part of the right side of the rear end of the middle door frame, one end of the fourth inner oil pipe is communicated with the fourth outer oil pipe through the fifth steel pipe joint, the other end of the fourth inner side oil pipe is connected with a sixth steel pipe joint, and the sixth steel pipe joint is fixed to the lower portion of the rear end of the fork frame.
4. The three-stage fully free portal frame with the four-piece valve oil way assembly according to claim 3, wherein: the first sheet valve oil path assembly is composed of a first oil pipe roller and a first oil pipe wound on the first oil pipe roller, the first oil pipe roller is fixed to the upper portion of the right side of the rear end of the middle door frame, one end of the first oil pipe is connected with a seventh steel pipe joint, the seventh steel pipe joint is fixed to the lower portion of the rear end of the inner door frame, the other end of the first oil pipe is connected with an eighth steel pipe joint, and the eighth steel pipe joint is fixed to the lower portion of the rear end of the outer door frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020818047.XU CN212893757U (en) | 2020-05-15 | 2020-05-15 | Three-stage full-free portal frame with four-piece valve oil way assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020818047.XU CN212893757U (en) | 2020-05-15 | 2020-05-15 | Three-stage full-free portal frame with four-piece valve oil way assembly |
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| Publication Number | Publication Date |
|---|---|
| CN212893757U true CN212893757U (en) | 2021-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020818047.XU Active CN212893757U (en) | 2020-05-15 | 2020-05-15 | Three-stage full-free portal frame with four-piece valve oil way assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212893757U (en) |
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2020
- 2020-05-15 CN CN202020818047.XU patent/CN212893757U/en active Active
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