CN210237020U - Screw nut transmission hoisting system - Google Patents
Screw nut transmission hoisting system Download PDFInfo
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- CN210237020U CN210237020U CN201920514438.XU CN201920514438U CN210237020U CN 210237020 U CN210237020 U CN 210237020U CN 201920514438 U CN201920514438 U CN 201920514438U CN 210237020 U CN210237020 U CN 210237020U
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- gantry
- screw
- chain
- motor
- fork
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Abstract
The utility model discloses a screw nut transmission hoisting system, which comprises an outer portal frame, an inner portal frame and a fork frame, the inner gantry is connected with the outer gantry in an up-and-down sliding manner, the fork frame is connected with the inner gantry in an up-and-down sliding manner, a screw rod transmission part for driving the inner door frame to slide up and down is arranged between the outer door frame and the inner door frame, a chain transmission part for driving the fork frame to slide up and down is arranged between the outer door frame and the fork frame, the inner gantry is driven by the motor and the lead screw nut to slide up and down on the outer gantry, the whole system has simple structure, and no hydraulic pipeline is needed to be arranged, so that the phenomenon of oil leakage or oil seepage can not occur, the stability of the forklift is improved, and the pollution to the surrounding environment is avoided, and the chain wheel and chain transmission system has simple structure, small occupied space and easy maintenance.
Description
Technical Field
The utility model relates to a fork truck portal technical field specifically is a screw-nut transmission hoisting system.
Background
The lifting system is a direct working device for the forklift to carry out loading and unloading operation, and the unloading and stacking of goods are finally completed by the lifting system, so that the lifting system is the most important component of the forklift. The existing forklift hoisting system mainly comprises a wrapped portal frame and an oil cylinder for driving the portal frame to move, wherein the portal frame system mainly comprises an outer portal frame and an inner portal frame, the three portal frames also comprise a middle portal frame, the outer hoisting portal frame is fixedly connected with a forklift body in the vertical direction, and the inner portal frame slides up and down on the outer portal frame by taking a hydraulic cylinder as power, so that goods can be lifted or lowered.
Because the power supply of the work of fork is the pneumatic cylinder, therefore need arrange a plurality of pneumatic cylinders and hydraulic piping system, at the in-service use in-process, because fork truck negative pressure is great, great to hydraulic system's pressure, therefore the phenomenon of oil leak, oil impregnate often can appear, not only cause the influence to fork truck's work, under the operational environment that requires the environment to be higher moreover, still can cause the pollution to operational environment, like food, medicine, biotechnology and so on the higher work occasion of environmental requirement.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a screw-nut transmission hoisting system to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a screw nut transmission hoisting system comprises an outer gantry, an inner gantry and a fork frame, wherein the inner gantry is connected with the outer gantry in a vertical sliding manner, the fork frame is connected with the inner gantry in a vertical sliding manner, a screw transmission part for driving the inner gantry to slide vertically is arranged between the outer gantry and the inner gantry, and a chain transmission part for driving the fork frame to slide vertically is arranged between the outer gantry and the fork frame;
the screw rod transmission part comprises a screw rod which is rotationally connected to the outer gantry, a nut is sleeved on the screw rod and fixedly arranged on the inner gantry, and a power mechanism for driving the screw rod to rotate is arranged on the outer gantry;
the chain transmission part comprises a chain wheel and a chain, the chain wheel is located at the top end of the inner gantry, the chain bypasses the top end of the inner gantry, the chain is meshed with the chain wheel, and two ends of the chain are fixedly connected with the outer gantry and the fork frame respectively.
As a further aspect of the present invention: the outer gantry is provided with a screw rod connecting seat, and the screw rod is rotatably connected to the screw rod connecting seat.
As a further aspect of the present invention: the installation direction of the screw rod is parallel to the sliding direction of the inner door frame on the outer door frame.
As a further aspect of the present invention: the power mechanism is a motor and a speed reducer in power connection with the motor, and the output end of the speed reducer is in power connection with the screw rod.
As a further aspect of the present invention: the two parallel screw rods are arranged, the motor is a double-shaft motor, output shafts at two ends of the motor are both connected with speed reducers, and the two screw rods are both in power connection with the motor through the speed reducers.
As a further aspect of the present invention: the top end of the outer gantry is provided with a motor support, and the motor and the speed reducer are fixedly arranged at the upper ends of the motor and the motor.
As a further aspect of the present invention: the screw rod is at least connected with a nut through threads, and the nut is fixedly connected to the lower portion of the inner door frame.
As a further aspect of the present invention: the outer gantry is provided with an outer gantry connecting seat, the outer gantry connecting seat is fixedly connected with one end of the chain, the fork frame is provided with a fork frame connecting seat, and the fork frame connecting seat is fixedly connected with the other end of the chain.
As a further aspect of the present invention: the outer gantry connecting seat and the fork frame connecting seat are both located below the chain wheel.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the lead screw transmission system is arranged, the inner gantry is driven to slide up and down on the outer gantry through the motor and the lead screw nut, the whole lead screw transmission system is simple in structure, and a hydraulic pipeline is not required to be arranged, so that the phenomenon of oil leakage or oil seepage is avoided, the stability of the forklift is improved, and the pollution to the surrounding environment is avoided;
2. this application is through setting up sprocket chain drive system, transmits the motion of interior portal to the fork frame through the chain, and then can drive the fork frame through interior portal and carry out the up-and-down motion to the completion is to the work of lifting and transferring of goods, sprocket chain drive system simple structure moreover, occupation space is less, easy to maintain and maintenance moreover.
Drawings
FIG. 1 is a front view of the present invention;
fig. 2 is a side view of the present invention.
In the figure: the automatic fork-lift truck comprises an outer gantry 1, an inner gantry 2, a fork frame 3, a motor support 4, a motor 5, a motor 6, a speed reducer 7, a screw rod 8, a nut 8, a screw rod mounting seat 9, a chain wheel 10, a chain 11, an outer gantry connecting seat 12 and a fork frame connecting seat 13.
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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, in an embodiment of the present invention, a screw nut transmission hoisting system includes an outer gantry 1, an inner gantry 2, and a fork carriage 3, wherein the inner gantry 2 is connected to the outer gantry 1 in a vertical sliding manner, the fork carriage 3 is connected to the inner gantry 2 in a vertical sliding manner, a screw transmission portion for driving the inner gantry 2 to slide vertically is disposed between the outer gantry 1 and the inner gantry 2, and a chain transmission portion for driving the fork carriage 3 to slide vertically is disposed between the outer gantry 1 and the fork carriage 3;
the screw rod transmission part comprises a screw rod 7 which is rotationally connected to the outer gantry 1, at least one screw rod 7 is arranged, in the embodiment, two screw rods 7 are arranged in parallel, a screw rod connecting seat 9 is arranged on the outer gantry 1, the screw rods 7 are rotationally connected to the screw rod connecting seat 9, the screw rods 7 are vertically arranged, nuts 8 are sleeved on the screw rods 7, at least one nut 8 is sleeved on each screw rod 7, in the embodiment, one nut 8 is arranged on each screw rod 7, the nuts 8 are in threaded connection with the screw rods 7, the nuts 8 are fixedly connected to the lower part of the inner gantry 2, further, the inner gantry 2 can be driven to slide on the outer gantry 1 by rotating the screw rods 7, a power mechanism for driving the screw rods 7 to rotate is arranged on the outer gantry 1, a motor support 4 is arranged at the top end of the outer gantry 1, the power mechanism comprises a motor 5, in the embodiment, the two speed reducers 6 are respectively connected with the two screw rods 7, so that the two screw rods 7 can be driven by the double-shaft motor to move in the same rotating speed and the same rotating direction, the inner gantry 2 can stably slide up and down on the two parallel screw rods 7, and the double-shaft motor and the two speed reducers 6 are fixedly connected to the upper end of the motor support 4;
the chain transmission part comprises a chain wheel 10 and a chain 11, the chain wheel 10 is positioned at the top end of the inner gantry 2, the chain 11 winds around the chain wheel 10, two ends of the chain 11 which winds around the chain wheel 10 are respectively fixedly connected with the outer gantry 1 and the fork frame 3, and then a similar movable pulley system is formed by a chain 11, a chain wheel 10, an outer door frame 1 and an inner door frame 2, the chain wheel 10 arranged at the top end of the inner door frame 2 is equivalent to a movable pulley, an outer door frame connecting seat 12 is arranged on the outer door frame 1, the outer door frame connecting seat 12 is fixedly connected with one end of the chain 11, a fork frame connecting seat 13 is arranged on the fork frame 3, the fork frame connecting seat 13 is fixedly connected with the other end of the chain 11, meanwhile, the outer gantry connecting seat 12 and the fork frame connecting seat 13 are both positioned below the chain wheel 10, thus, as the inner mast 2 moves the sprocket 10 upwardly, the outer mast attachment sockets 12 remain stationary and the sprocket 10 moves upwardly, thereby moving the fork carriage attachment sockets 13 and the fork carriage 3 upwardly.
When the utility model is used, when the fork frame 3 and the forks on the fork frame 3 need to move upwards, the double-shaft motor is started, the lead screw 7 is driven to rotate by the double-shaft motor and the reducer 6, the nut 8 moves upwards on the lead screw 7 by the rotation of the lead screw 7, and then the inner gantry 2 can be driven to slide upwards relative to the outer gantry 1, the chain wheel 10 can be driven to move upwards simultaneously in the process of the upward movement of the inner gantry 2, the outer gantry connecting seat 12 is fixed because the chain wheel 10 moves upwards, so that the distance between the chain wheel 10 and the outer gantry connecting seat 12 is increased, the chain wheel 10 can rotate towards the direction of the outer gantry connecting seat 12, the distance between the fork frame connecting seat 13 and the chain wheel 10 is shortened, and the sum of the distance between the outer gantry connecting seat 12 and the chain wheel 10 and the distance between the chain wheel 10 and the fork frame connecting seat 13 is always the same as, thereby driving the fork frame 3 to ascend; when it is required that the fork carriage 3 and the forks on the fork carriage 3 move downward, the lifter dual-shaft motor rotates in the opposite direction, so that the inner mast 2 can be slid downward on the outer mast 1, and the sprocket 10 is moved downward by the downward sliding of the inner mast 2, thereby allowing the fork carriage 3 to move downward.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. A screw nut transmission hoisting system comprises an outer gantry (1), an inner gantry (2) and a fork frame (3), wherein the inner gantry (2) is connected with the outer gantry (1) in a vertical sliding manner, and the fork frame (3) is connected with the inner gantry (2) in a vertical sliding manner, and is characterized in that a screw transmission part for driving the inner gantry (2) to slide vertically is arranged between the outer gantry (1) and the inner gantry (2), and a chain transmission part for driving the fork frame (3) to slide vertically is arranged between the outer gantry (1) and the fork frame (3);
the screw rod transmission part comprises a screw rod (7) which is rotationally connected to the outer gantry (1), a nut (8) is sleeved on the screw rod (7), the nut (8) is fixedly arranged on the inner gantry (2), and a power mechanism for driving the screw rod (7) to rotate is arranged on the outer gantry (1);
chain drive portion includes sprocket (10) and chain (11), sprocket (10) are located interior portal (2) top, chain (11) are walked around interior portal (2) top sprocket (10) just chain (11) both ends respectively with outer portal (1), fork frame (3) fixed connection.
2. A screw nut transmission hoisting system according to claim 1, characterized in that the outer gantry (1) is provided with a screw connecting base (9), and the screw (7) is rotatably connected to the screw connecting base (9).
3. Screw nut transmission lifting system according to claim 1, characterised in that the mounting direction of the screw (7) is parallel to the sliding direction of the inner gantry (2) on the outer gantry (1).
4. A screw nut transmission hoisting system according to claim 1, characterized in that the power mechanism is an electric motor (5) and a speed reducer (6) in power connection with the electric motor (5), and the output end of the speed reducer (6) is in power connection with the screw (7).
5. The screw-nut transmission hoisting system according to claim 4, wherein two screw rods (7) are arranged in parallel, the motor (5) is a double-shaft motor, output shafts at two ends of the motor (5) are both connected with a speed reducer (6), and the two screw rods (7) are both in power connection with the motor (5) through the speed reducer (6).
6. A screw nut transmission hoisting system according to claim 4 or 5, characterized in that a motor bracket (4) is arranged at the top end of the outer gantry (1), and the motor (5) and the reducer (6) are both fixedly arranged at the upper end of the motor bracket (4).
7. A screw nut driven hoisting system as claimed in claim 4, characterized in that each of said screws (7) is at least threadedly connected with a nut (8), said nut (8) being fixedly connected to the lower part of said inner gantry (2).
8. A screw nut driven hoisting system as claimed in claim 1, characterized in that the outer gantry (1) is provided with an outer gantry connecting seat (12), the outer gantry connecting seat (12) is fixedly connected to one end of the chain (11), the fork carriage (3) is provided with a fork carriage connecting seat (13), and the fork carriage connecting seat (13) is fixedly connected to the other end of the chain (11).
9. Feed screw nut driven hoisting system according to claim 8, characterized in that the outer gantry connection base (12), the fork carriage connection base (13) are located below the chain wheel (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920514438.XU CN210237020U (en) | 2019-04-16 | 2019-04-16 | Screw nut transmission hoisting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920514438.XU CN210237020U (en) | 2019-04-16 | 2019-04-16 | Screw nut transmission hoisting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210237020U true CN210237020U (en) | 2020-04-03 |
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ID=69967200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920514438.XU Active CN210237020U (en) | 2019-04-16 | 2019-04-16 | Screw nut transmission hoisting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210237020U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109970000A (en) * | 2019-04-16 | 2019-07-05 | 安徽合力股份有限公司 | A kind of screw nut driving tackling system |
-
2019
- 2019-04-16 CN CN201920514438.XU patent/CN210237020U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109970000A (en) * | 2019-04-16 | 2019-07-05 | 安徽合力股份有限公司 | A kind of screw nut driving tackling system |
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