CN218371512U - Scissor fork type lifting mechanism - Google Patents
Scissor fork type lifting mechanism Download PDFInfo
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- CN218371512U CN218371512U CN202222245451.4U CN202222245451U CN218371512U CN 218371512 U CN218371512 U CN 218371512U CN 202222245451 U CN202222245451 U CN 202222245451U CN 218371512 U CN218371512 U CN 218371512U
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- locking
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- scissor
- rack
- push
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Abstract
The utility model discloses a cut fork elevating system, including cutting fork arm, locking board, locking rack and the device of bounceing, cut fork arm one end activity and set up on the base, the locking board rotates the setting and is in the one end of the activity of cutting the fork arm, the locking rack is fixed to be set up on the base, the locking board with locking rack cooperation restriction cut the fork arm and roll back, be connected with on the locking board the device of bounceing, the device of bounceing can to base direction motion is supported the locking board, will the locking board with the separation of locking rack. The locking plate and the locking rack are arranged on the base, when the lifting mechanism ascends or descends to a certain height, the locking plate can be buckled in the locking rack to limit further movement of the lifting mechanism, a relatively fixed static state is kept, and the overall safety performance of the lifting mechanism is guaranteed.
Description
Technical Field
The invention belongs to the technical field of lifting machinery, and particularly relates to a scissor type lifting mechanism.
Background
In the prior art, a scissor lift is common in the use of a lift, an output end is fixedly connected with a scissor fork, and the scissor fork is driven to be supported or laid flat by a driving cylinder, so that a lifting platform is lifted or lowered. As disclosed in patent No. 2020215172622, "a scissor hydraulic lift" pushes inner and outer scissor forks by means of a balance cylinder and a hydraulic cylinder to perform ascending and descending movements of the lift, and further to maintain the stability of the lift. In a comprehensive view, the structure is complex, parts are more, and an independent locking mechanism is not provided to ensure that the lifted elevator can keep a certain height, so that the elevator is convenient for operators to use and the safety of the operators is ensured.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a cut fork elevating system can make things convenient for the locking and the release of elevating system elevating movement, is convenient for to elevating system's use and safety.
Realize the utility model discloses the technical scheme of purpose is: the utility model provides a cut fork elevating system, includes scissors fork arm, locking plate, locking rack and plays the device, scissors fork arm one end activity sets up on the base, the locking plate rotates the setting and is in the one end of the activity of scissors fork arm, the locking rack is fixed to be set up on the base, the locking plate with locking rack cooperation restriction it rolls back to cut the fork arm, be connected with on the locking plate play the device, it can to play the device base direction motion support the locking plate, will the locking plate with the separation of locking rack.
The scissor arms of the scissor type lifting mechanism are formed by cross-hinged support rods. One end of the scissor arm is hinged and fixed on the base to form a hinged end, and the other end of the scissor arm is arranged on the base in a sliding mode to form one end of the movement. And a power mechanism, such as a hydraulic cylinder, an electric lifter and the like, is also arranged on the base, one end of the power mechanism is hinged with the base, and the other end of the power mechanism is hinged with the supporting rod, so that the scissor arm can be conveniently pushed to lift. When the lifting mechanism needs to be lifted, the power mechanism pushes the scissor arm to move, and the movable end of the scissor arm moves towards the hinged end, so that the lifting mechanism is driven to lift; when the scissors are required to fall, the power mechanism drives the movable end of the scissors arm connected with the power mechanism to move towards the direction far away from the hinged end, and the lifting mechanism is driven to fall. When the lifting mechanism rises to a certain height, the locking plate can be buckled in the locking rack to prevent the lifting mechanism from falling, the working height requirement of operators is met, and the integral safety performance of the lifting mechanism can be guaranteed due to the locking state. If the scissor arm needs to be continuously lifted, the power mechanism is only needed to continuously drive the scissor arm to move, if the lifting mechanism needs to be lowered, the bouncing device on the locking plate moves downwards to support the locking plate, so that the locking plate is separated from the locking rack, and as the bouncing device is always kept in a bouncing state, a certain gap distance can be kept between the separated locking plate and the locking rack, and the scissor arm cannot be limited when the scissor arm continues to be lowered.
The ejecting device is a push-pull electromagnet, when the push-pull electromagnet is powered on, the push-pull electromagnet is attracted, an iron core in the push-pull electromagnet moves downwards to support the locking plate, and the locking plate is separated from the locking rack. The push-pull electromagnet 4 is an existing device, so that the working principle is not described in more detail.
The base is provided with a support bar, and the push-pull electromagnet is abutted to the support bar. Because the push-pull electromagnet is smaller and is positioned, the stroke of the iron core of the push-pull electromagnet is shorter, so that the supporting bar is arranged to be abutted to the iron core of the push-pull electromagnet, and the locking plate is effectively pushed to be separated from the locking rack.
The iron core of the push-pull electromagnet is provided with a roller, and the push-pull electromagnet is in rolling butt joint with the supporting bar through the roller. If there is no roller, the iron core of the push-pull electromagnet will slide and abut against the support bar all the time, so as to generate a harsh friction sound, and the roller changes the sliding friction between the iron core and the support bar into rolling friction, thereby reducing abrasion and noise.
The height of the supporting bar is smaller than that of the locking rack, and if the height of the supporting bar is higher than that of the locking rack, the locking plate cannot be buckled in the locking rack. The two locking racks are symmetrically arranged on two sides of the supporting bar. The support bar is located the central point of locking plate below, sets up two locking racks and makes locking plate both sides atress more balanced, prevents to one side skew, and is safer.
The locking rack comprises a plurality of locking teeth, each locking tooth comprises a guide tooth wall and a locking tooth wall, the guide tooth walls are obliquely arranged, the locking tooth walls are vertically arranged, and the opening of each locking tooth is towards the hinged end of the corresponding scissors arm (namely, the height of each guide tooth wall is gradually increased from one movable end to the hinged end). The locking plate can not be limited by the locking teeth due to the existence of the guide tooth wall which is obliquely arranged in the lifting process of the lifting mechanism, and when the lifting mechanism is lifted to a preset height, the locking plate can not move towards the hinged end of the scissor arm any more, and can slide to the inside of the locking teeth under the action of gravity, and the locking tooth wall can not return under the limitation of the locking tooth wall.
The movable end of the scissor fork arm is provided with a connecting shaft, the base is provided with a sliding groove matched with the connecting shaft, the connecting shaft slides in the sliding groove on the base, and the length of the locking rack is not less than that of the sliding groove. The connecting shaft can be used for slidably supporting the scissor fork arm to be locked at the highest position, and the working efficiency of the locking device is improved.
By adopting the technical scheme, the utility model discloses following beneficial effect has: (1) The locking device is formed by matching the locking plate and the locking rack, so that the locking effect can be well achieved when the elevator is lifted; (2) The problem that the locking plate is buckled in the locking rack and is inconvenient to separate is solved by using the function of the push-pull type electromagnet, so that the lifting function of the lifter is better ensured.
Drawings
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which
FIG. 1 is a schematic structural view of a scissor lift with a locking mechanism according to the present invention;
FIG. 2 is a schematic diagram of a push-pull electromagnet of the present invention;
fig. 3 is an enlarged view of fig. 1 at D.
The reference numbers in the drawings are: 1, shearing a fork arm; 2 connecting the shaft; 3, locking a plate; 4, a push-pull electromagnet; 5 locking the rack; 5-1, guiding the tooth wall; 5-2 locking tooth walls; 6, supporting strips; 7, a roller; 8 iron cores; 9 a sliding groove; 10, a base; 11 an active end; 12 a hinged end; 13, a power mechanism; .
Detailed Description
Example (b):
as shown in fig. 1-2, a scissor-fork type lifting mechanism comprises a scissor arm 1, a locking plate 3, a locking rack 5 and a bouncing device, wherein one end of the scissor arm 1 is movably arranged on a base 10, the locking plate 3 is rotatably arranged at one end of the scissor arm 1, the locking rack 5 is fixedly arranged on the base 10, the locking plate 3 and the locking rack 5 are matched to limit the scissor arm 1 to roll back, the bouncing device is connected to the locking plate 3, and the bouncing device can move towards the base 10 to support the locking plate 3, so that the locking plate 3 is separated from the locking rack 5. The scissor arm 1 of the scissor type lifting mechanism is formed by cross-hinged support rods. One end of the scissor arm 1 is hinged and fixed on the base to form a hinged end 12, and the other end is arranged on the base in a sliding manner to form the movable end 11. The base 10 is further provided with a power mechanism 13, such as a hydraulic cylinder, an electric elevator and the like, one end of the power mechanism 13 is hinged with the base 10, and the other end of the power mechanism 13 is hinged with the supporting rod, so that the scissor arm 1 can be conveniently pushed to lift. When the lifting mechanism needs to be lifted, the power mechanism 13 pushes the scissor arm 1 to move, and the movable end 11 of the scissor arm 1 moves towards the hinged end 12, so that the lifting mechanism is driven to lift; when the scissors fork arm 1 needs to descend, the power mechanism 13 drives the movable end 11 of the scissors fork arm 1 connected with the power mechanism to move towards the direction far away from the hinged end 12, and the lifting mechanism is driven to descend. When the lifting mechanism rises to a certain height, the locking plate 3 can be buckled in the locking rack 5 to prevent the lifting mechanism from falling, so that the working height requirement of an operator is met, and the integral safety performance of the lifting mechanism can be ensured in a locked state. If the scissor arm 1 needs to be continuously lifted, the power mechanism 13 is only needed to continuously drive the scissor arm 1 to move, if the lifting mechanism needs to be lowered, the bouncing device on the locking plate 3 moves downwards to support the locking plate 3, so that the locking plate 3 is separated from the locking rack 5, and as the bouncing device is always kept in a bouncing state, a certain gap distance is kept between the separated locking plate 3 and the locking rack 5, and the scissor arm 1 cannot be limited when the scissor arm 1 is continuously lowered.
The bouncing device is a push-pull electromagnet 4, when the push-pull electromagnet 4 is electrified, the push-pull electromagnet 4 is attracted, an iron core 8 positioned in the push-pull electromagnet 4 moves downwards to prop up the locking plate 3, so that the locking plate 3 is separated from the locking rack 5. The push-pull electromagnet 4 is an existing device, so that the working principle is not described in more detail.
A supporting strip 6 is arranged on the base 10, and the push-pull type electromagnet 4 is abutted to the supporting strip 6. Because the push-pull electromagnet 4 is smaller and is positioned, the stroke of the iron core 8 of the push-pull electromagnet 4 is shorter, so that the supporting bar 6 is arranged to be abutted against the iron core 8 of the push-pull electromagnet 4, and the locking plate 3 is effectively pushed to be separated from the locking rack 5. An idler wheel 7 is arranged on an iron core 8 of the push-pull electromagnet 4, and the push-pull electromagnet 4 is abutted to the supporting bars 6 in a rolling mode through the idler wheel 7. If the roller 7 is not provided, the iron core 8 of the push-pull electromagnet 4 always slides and abuts against the supporting strip 6 to generate a harsh friction sound, and the roller 7 changes the sliding friction between the iron core 8 and the supporting strip 6 into rolling friction, so that the abrasion is reduced, and the noise is reduced. The height of the supporting bar 6 is less than that of the locking rack 5, and if the height of the supporting bar 6 is higher than that of the locking rack 5, the locking plate 3 cannot be buckled in the locking rack 5. The number of the locking racks 5 is two, and the two locking racks are symmetrically arranged on two sides of the supporting bar 6. The support bar 6 is located below the central position of the locking plate 3, and the two locking racks 5 are arranged to balance the stress on the two sides of the locking plate, so that the locking plate is prevented from inclining to one side and is safer.
The locking rack 5 comprises a plurality of locking teeth, the locking teeth comprise a guide tooth wall 5-1 and a locking tooth wall 5-2, the guide tooth wall 5-1 is obliquely arranged, the locking tooth wall 5-2 is vertically arranged, and the opening of the locking teeth faces the hinged end 12 of the scissor arm 1 (namely, the height of the guide tooth wall is gradually increased from the movable end A to the hinged end 12). In the lifting process of the lifting mechanism, due to the existence of the guide tooth wall which is obliquely arranged, the locking plate cannot be limited by the locking teeth, when the lifting mechanism is lifted to a preset height, the locking plate 3 cannot move to the hinged end 12 of the scissor arm any more, can slide into the locking teeth under the action of gravity, and cannot return under the limitation of the vertically arranged locking tooth wall 5-2.
The movable end of the scissor arm 1 is provided with a connecting shaft 2, the base 10 is provided with a sliding groove 9 matched with the connecting shaft 2, the connecting shaft 2 slides in the sliding groove 9 on the base 10, and the length of the locking rack 5 is not less than that of the sliding groove 9. The connecting shaft 2 can be used for slidably supporting the scissor arm 1 to be locked at the highest position, and the working efficiency of the locking device is improved.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. The utility model provides a cut fork elevating system which characterized in that: including scissor arm (1), locking board (3), locking rack (5) and bounce the device, scissor arm (1) one end activity sets up on base (10), locking board (3) rotate to set up the one end of scissor arm's (1) activity, locking rack (5) are fixed to be set up on base (10), locking board (3) with locking rack (5) cooperation restriction scissor arm (1) is rolled back, be connected with on locking board (3) bounce the device, bounce the device can to base (10) direction motion supports locking board (3), will locking board (3) with locking rack (5) separation.
2. A scissor lift mechanism according to claim 1, wherein: the bouncing device is a push-pull electromagnet (4).
3. A scissor lift mechanism according to claim 2, wherein: a supporting strip (6) is arranged on the base (10), and the push-pull type electromagnet (4) is abutted to the supporting strip (6).
4. A scissor lift mechanism according to claim 3, wherein: the push-pull electromagnet (4) is provided with a roller (7), and the push-pull electromagnet (4) is in rolling butt joint with the support bar (6) through the roller (7).
5. A scissor lift mechanism according to claim 3, wherein: the height of the supporting strip (6) is smaller than that of the locking rack (5).
6. A scissor lift mechanism according to claim 3, wherein: the number of the locking racks (5) is two, and the two locking racks are symmetrically arranged on two sides of the supporting bar (6).
7. A scissor lift mechanism according to claim 1, wherein: the locking rack (5) comprises a plurality of locking teeth, the locking teeth comprise guide tooth walls (5-1) and locking tooth walls (5-2), the guide tooth walls (5-1) are obliquely arranged, the locking tooth walls (5-2) are vertically arranged, and openings of the locking teeth face to hinged ends (12) of the scissor fork arms (1).
8. A scissor lift mechanism according to claim 1, wherein: one end of the scissor arm (1) is provided with a connecting shaft (2), the base (10) is provided with a sliding groove (9) matched with the connecting shaft (2), the connecting shaft (2) slides in the sliding groove (9) on the base (10), and the length of the locking rack (5) is not less than that of the sliding groove (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222245451.4U CN218371512U (en) | 2022-08-25 | 2022-08-25 | Scissor fork type lifting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222245451.4U CN218371512U (en) | 2022-08-25 | 2022-08-25 | Scissor fork type lifting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218371512U true CN218371512U (en) | 2023-01-24 |
Family
ID=84968582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222245451.4U Active CN218371512U (en) | 2022-08-25 | 2022-08-25 | Scissor fork type lifting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218371512U (en) |
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2022
- 2022-08-25 CN CN202222245451.4U patent/CN218371512U/en active Active
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