CN218642351U - Two-dimensional double-A-shaped scissor jack - Google Patents
Two-dimensional double-A-shaped scissor jack Download PDFInfo
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- CN218642351U CN218642351U CN202221663179.5U CN202221663179U CN218642351U CN 218642351 U CN218642351 U CN 218642351U CN 202221663179 U CN202221663179 U CN 202221663179U CN 218642351 U CN218642351 U CN 218642351U
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Abstract
The utility model provides a two A shape scissor jack of two dimension, includes the first A font connecting rod spare of two forward settings, and the second A font connecting rod spare of two reverse settings, two first A font connecting rod spare is the setting of falling V-arrangement, two second A font connecting rod spare is the V-arrangement setting, the top of first A font connecting rod spare is articulated through last articulated elements, the shank bottom of first A font connecting rod spare is articulated with the shank top of two second A font connecting rod spares, the bottom of second A font connecting rod spare is articulated through articulated elements down. The legs of the first A-shaped connecting rod piece and the second A-shaped connecting rod piece which are arranged in the positive and negative directions are connected with each other, the combined scissor jack has a two-dimensional vertical double-A shape, the vertical overall static compression-resistant supporting capacity of the jack is improved, and fisheye joint rod end bearings are arranged at the upper end and the lower end of the jack respectively to ensure the stress of an axial lead.
Description
Technical Field
The utility model relates to a lifting machinery technical field especially relates to a two-dimentional two A shape scissor jack.
Background
In recent years, a scissor jack for an automobile is often applied to the field of photovoltaic supports in a photovoltaic power station, as shown in fig. 1 and fig. 2, the existing scissor jack for an automobile is in a one-dimensional olive shape, the front surface of fig. 1 is in an olive shape, the waist stiffness is too large, the redundancy is excessive, and fig. 2 is a side view, a non-olive shape and the waist stiffness is too small and seriously insufficient, so that when the top load of the jack is large and/or an eccentric load exists, the waist portion shown in fig. 2 is very easy to bend laterally and is unstable and damaged.
The jack of the type shown in fig. 1 has a lifting height dimension which is generally smaller than a self width dimension, i.e. an aspect ratio which is smaller than 1, and when in engineering application, the jack often occupies too much space due to too large a width dimension ratio or has insufficient lifting stroke.
In the jack shown in fig. 1, when the screw rod adopts a single thread turning direction in the full length and is jacked to a high position, the length of a cantilever extending out of the screw rod at one end is often longer, and when the jack is horizontally connected in series and linked, the bearing capacity and the stability of the cantilever end of the screw rod are poorer. In the application field of photovoltaic power stations, when two or more scissor jack machines are connected in series horizontally for linkage, the connection part of the screw rod end and the transmission shaft end is complex in working condition and easy to break down, and the safety redundancy of transmission design must be improved.
When the jack is used for a photovoltaic power station, the jack is generally required to be used in series, the end of the screw rod is connected with the transmission shaft, an inscribed hexagon is milled at the end of the screw rod according to the diameter of the root circle, the connection with the universal joint of the transmission shaft is facilitated, the effective area of the root diameter circle is reduced, and the torsion resistance of the screw rod is greatly lost.
In conclusion, the scissor jack in the prior art has the problems of insufficient vertical rigidity, insufficient jacking stroke, too large size width, too long length of a screw rod cantilever, unreasonable transmission connection, inconvenience in field installation and maintenance and the like, so that a new scissor jack is needed to be developed to solve the problems and meet the application of the scissor jack in a photovoltaic power station tracking support.
SUMMERY OF THE UTILITY MODEL
Problem to prior art exists, the utility model provides an improve vertical static supporting ability and dynamic supporting ability, increase bearing height, the two A shape scissor jack of two dimension of being convenient for installation and maintenance.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a two A shape scissor jack of two dimension, includes the first A font connecting rod spare of two forward settings, and the second A font connecting rod spare of two reverse settings, two first A font connecting rod spare is the setting of falling the V-arrangement, two second A font connecting rod spare is the V-arrangement setting, the top of first A font connecting rod spare is articulated through last articulated elements, the shank bottom of first A font connecting rod spare with the shank top of second A font connecting rod spare is articulated, the bottom of second A font connecting rod spare is articulated through articulated elements down.
Furthermore, a screw rod is arranged between the first A-shaped connecting rod piece and the second A-shaped connecting rod piece, and two ends of the screw rod extend outwards.
Furthermore, an inscribed hexagonal section cylinder with a crest circle is milled at the outer end part of the screw rod, so that the loss of the area of the root diameter circle of the screw rod is reduced, the torque transmission capacity of the screw rod is improved, and the dynamic supporting capacity is improved.
Furthermore, the outer end of the screw rod is sleeved with a bushing, an inner flange and an outer flange are welded to the two ends of the bushing respectively, and the bushing penetrates through the inner flange through a screw to be fixed to the outer end of the screw rod. The end part of the screw rod is additionally provided with the bushing, so that the axial slidable adjusting stroke of the steel pipe transmission shaft is lengthened, the field installation, maintenance and operation are convenient, and the processing and manufacturing cost is low.
Further, a steel pipe transmission shaft is sleeved on the periphery of the bushing, the two screw rods are connected in series through the steel pipe transmission shaft, and the transmission shaft can axially slide, adapt to small eccentricity, adapt to small folding angle and transmit torque.
Furthermore, the cantilever end of the screw rod is provided with positive and negative threads, and the middle part of the screw rod is provided with the driving motor assembly, so that the length of the screw rod cantilever is shortened, and the stability and the bearing capacity of the screw rod cantilever are improved.
Furthermore, a reaction arm is arranged at the tail end of the driving motor assembly and is flexibly connected with an adjacent fixture.
Further, the upper hinge part and the lower hinge part are provided with fisheye joint rod end bearings.
Furthermore, a tooth part is arranged at the top end of the first A-shaped connecting rod piece, the first A-shaped connecting rod piece is split and opened at the position 2/3 of the length of the first A-shaped connecting rod piece to form two leg parts, a lacing strip is connected between the two leg parts, and the second A-shaped connecting rod piece is identical to the first A-shaped connecting rod piece in structure.
Furthermore, one or more scissors fork connecting rods are hinged between the first A-shaped connecting rod piece and the second A-shaped connecting rod piece, and two ends of each scissors fork connecting rod are respectively hinged to the legs of the first A-shaped connecting rod piece and the second A-shaped connecting rod piece. One or more scissors fork link mechanisms are superposed in the middle, so that the jacking stroke is greatly increased.
The utility model has the advantages that:
the front and back arranged first A-shaped connecting rod piece and the second A-shaped connecting rod piece are connected with each other through legs, the combined scissor jack is in a two-dimensional vertical double-A shape, the vertical overall static compression-resistant supporting capacity of the jack is improved, and fisheye joint rod end bearings are arranged at the upper end and the lower end of the jack respectively to ensure the stress of an axial lead.
Drawings
FIG. 1 is a front view of a scissor jack according to the background art of the present invention;
FIG. 2 is a side view of a scissor jack according to the background art of the present invention;
FIG. 3 is a front view of the two-dimensional double A-shaped scissor jack of the present invention;
FIG. 4 is a side view of the two-dimensional double A-shaped scissor jack of the present invention;
FIG. 5 is a schematic view of a two-dimensional double-A-shaped scissor jack according to the present invention;
FIG. 6 is a schematic view of the connection between the steel tube transmission shaft and the bush when the two-dimensional double A-shaped scissor jacks of the present invention are connected in series;
FIG. 7 is a schematic structural view of an A-shaped connecting rod of the two-dimensional double A-shaped scissor jack of the present invention;
FIG. 8 is a schematic structural view of another embodiment of the two-dimensional double A-shaped scissor jack of the present invention;
FIG. 9 is a side view of FIG. 8;
in the figure, 1-a first A-shaped connecting rod piece, 2-a second A-shaped connecting rod piece, 3-upper hinge piece, 4-lower hinge piece, 5-tooth part, 6-leg part, 7-lead screw, 8-bush, 9-inner flange, 10-outer flange, 11-steel tube transmission shaft, 12-shaft end flange, 13-cantilever end, 14-driving motor assembly, 15-fisheye joint rod end bearing, 16-lacing bar, 17-scissor fork connecting rod and 18-counter force arm.
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 efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
As fig. 3 and 4, the utility model provides a two A of two dimension shape shear jack, first A font connecting rod spare 1 including two forward settings, and two second A font connecting rod spare 2 of reverse setting, two first A font connecting rod spares 1 are the setting of falling V-arrangement, two second A font connecting rod spares 2 are the setting of V-arrangement, the top of first A font connecting rod spare 1 is articulated through last articulated elements 3, 6 bottoms of the shank of first A font connecting rod spare 1 are articulated with 6 tops of the shank of two second A font connecting rod spares 2, the bottom of second A font connecting rod spare 2 is articulated through articulated elements 4 down. The scissor jack formed by the first A-shaped connecting rod piece 1 and the second A-shaped connecting rod piece 2 has double A-shaped two side surfaces, namely a two-dimensional double A-shaped structure. Because the waist parts on the two sides have enough strength and rigidity, when the load of the top of the jack is large, the waist parts are not easy to bend and damage laterally, the bending resistance of the waist parts is greatly improved, and the classic explanation can be obtained on the general material mechanics compression bar stabilization theory. The utility model discloses two A shape of two dimension are cut formula jack, have improved vertical whole static compressive support ability.
As shown in fig. 3 to 6, a lead screw 7 is disposed between the first a-shaped link member 1 and the second a-shaped link member 2, and two ends of the lead screw 7 are provided with cantilever ends 13 extending outwards. An inscribed hexagon section cylinder with a tooth top circle is milled at the outer end part of the screw rod 7, so that the loss of the tooth bottom diameter circle area of the screw rod 7 is reduced, the torque transmission capacity of the screw rod 7 is improved, and the dynamic supporting capacity is improved. The outer end part of the screw rod 7 is sleeved with a bushing 8, the inner side of the bushing 8 is also arranged to be hexagonal and matched with the hexagonal section column of the cantilever end 13. An inner flange 9 and an outer flange 10 are respectively welded at two ends of the lining 8, and the lining 8 penetrates through the inner flange 9 through a screw to be fixed at the outer end part of the screw rod 7. The end part of the screw rod 7 is added with the bushing 8, the axial slidable adjusting stroke of the steel pipe transmission shaft 11 is lengthened, the field installation, maintenance and operation are convenient, and the processing and manufacturing cost is lower.
When a plurality of screw rods 7 need to be connected in series, the steel pipe transmission shaft 11 is sleeved on the periphery of the bushing 8, the bushing 8 is inserted into the shaft end flange 12 of the steel pipe transmission shaft 11, the two screw rods 7 are connected in series through the steel pipe transmission shaft 11, and the steel pipe transmission shaft 11 can axially slide, adapt to small eccentricity, adapt to small break angle and transmit torque. Because the rotating speed of the screw rod 7 of the scissor jack is generally less than 40 revolutions per minute, the scissor jack belongs to extremely low-speed machinery, and the use requirement of serial linkage of a plurality of scissor jacks can be met by the coupling transmission mode.
The cantilever end 13 of the screw rod 7 is provided with a positive and negative thread, the middle part of the screw rod 7 is provided with a driving motor assembly 14, when the screw rod is jacked to a high position, the lengths of the cantilever ends 13 extending out of the two ends of the screw rod 7 are both shorter, the length of the cantilever end 13 of the screw rod 7 is shortened, and when the jacks are connected in series and linked, the bearing capacity and the stability of the cantilever end 13 of the screw rod 7 are both greatly improved.
Preferably, a reaction arm 18 is disposed at the rear end of the driving motor assembly 14, and the reaction arm 18 is flexibly connected to an adjacent fixture to prevent the driving motor assembly 14 from rotating reversely during operation.
As shown in fig. 3 and 4, the upper hinge part 3 and the lower hinge part 4 are provided with fisheye joint rod end bearings 15, so that bending moment and torque cannot be transmitted, and the vertical stress direction is ensured to be on the vertical axis of the jack, and eccentric vertical load cannot be generated.
As shown in fig. 7, the first a-shaped link member 1 has a tooth portion 5 at the top, and is split and opened at the bottom to an upper length of 2/3 to form two legs 6, and one or more lacing strips 16 are connected between the two legs 6 to form an a-shape. The second A-shaped connecting rod piece 2 has the same structure as the first A-shaped connecting rod piece 1.
As shown in fig. 8 and 9, one or more scissors fork connecting rods 17 are hinged between the first a-shaped connecting rod piece 1 and the second a-shaped connecting rod piece 2, and two ends of the scissors fork connecting rods 17 are respectively hinged to the leg portions 6 of the first a-shaped connecting rod piece 1 and the second a-shaped connecting rod piece 2. One or more scissor fork link mechanisms are superposed in the middle, so that the jacking height is greatly increased under the condition of keeping the width size unchanged, in other words, the width size is greatly reduced under the condition of keeping the jacking height unchanged, the height-to-width ratio can be larger than 2, and the engineering application does not need to occupy too much width space.
The utility model discloses two A of two dimension shape shear type jack has two A of two dimensions shape, has improved shear type jack's vertical static state support ability and dynamic support ability, has increased the support height, and the on-the-spot installation and the maintenance of being convenient for, has improved shear type jack's comprehensive properties, can be applied to photovoltaic power plant and trail the field of support.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A two-dimensional double a-shaped scissor jack, comprising: two forward first A font connecting rod spare that sets up, and two second A font connecting rod spare that reverse set up, two first A font connecting rod spare is the setting of falling V-arrangement, two second A font connecting rod spare is the V-arrangement setting, the top of first A font connecting rod spare is articulated through last articulated elements, the shank bottom of first A font connecting rod spare with the shank top of second A font connecting rod spare is articulated, the bottom of second A font connecting rod spare is articulated through articulated elements down.
2. The two-dimensional double a-shaped scissor jack of claim 1, wherein: and a screw rod is arranged between the first A-shaped connecting rod piece and the second A-shaped connecting rod piece, and two ends of the screw rod extend outwards.
3. The two-dimensional double a-shaped scissor jack of claim 2, wherein: and an inscribed hexagonal section column with a crest circle is milled at the outer end part of the screw rod.
4. The two-dimensional double a-shaped scissor jack of claim 2, wherein: the outer end of the screw rod is sleeved with a bushing, an inner flange and an outer flange are welded to the two ends of the bushing respectively, and the bushing penetrates through the inner flange through a screw to be fixed to the outer end of the screw rod.
5. The two-dimensional double a-shaped scissor jack of claim 4, wherein: the periphery of the bushing is sleeved with a steel pipe transmission shaft, and the two screw rods are connected in series through the steel pipe transmission shaft.
6. The two-dimensional double a-shaped scissor jack of claim 2, wherein: the cantilever end of the screw rod is provided with positive and negative threads, and the middle part of the screw rod is provided with a driving motor assembly.
7. The two-dimensional double a-shaped scissor jack of claim 6, wherein: the tail end of the driving motor assembly is provided with a reaction arm, and the reaction arm is flexibly connected with an adjacent fixture.
8. The two-dimensional double a-shaped scissor jack of claim 1, wherein: the upper hinge part and the lower hinge part are provided with fisheye joint rod end bearings.
9. The two-dimensional double a-shaped scissor jack of claim 1, wherein: the top end of the first A-shaped connecting rod piece is provided with a tooth part, the first A-shaped connecting rod piece is split and opened at the position 2/3 of the length of the first A-shaped connecting rod piece to form two leg parts, a lacing strip is connected between the two leg parts, and the second A-shaped connecting rod piece is identical to the first A-shaped connecting rod piece in structure.
10. The two-dimensional double a-shaped scissor jack of claim 1, wherein: one or more scissors fork connecting rods are hinged between the first A-shaped connecting rod piece and the second A-shaped connecting rod piece, and two ends of each scissors fork connecting rod are hinged to the legs of the first A-shaped connecting rod piece and the second A-shaped connecting rod piece respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221663179.5U CN218642351U (en) | 2022-06-29 | 2022-06-29 | Two-dimensional double-A-shaped scissor jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221663179.5U CN218642351U (en) | 2022-06-29 | 2022-06-29 | Two-dimensional double-A-shaped scissor jack |
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| Publication Number | Publication Date |
|---|---|
| CN218642351U true CN218642351U (en) | 2023-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221663179.5U Active CN218642351U (en) | 2022-06-29 | 2022-06-29 | Two-dimensional double-A-shaped scissor jack |
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| Country | Link |
|---|---|
| CN (1) | CN218642351U (en) |
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- 2022-06-29 CN CN202221663179.5U patent/CN218642351U/en active Active
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