CN210398189U - Self-positioning lifting frame - Google Patents
Self-positioning lifting frame Download PDFInfo
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- CN210398189U CN210398189U CN201921206877.0U CN201921206877U CN210398189U CN 210398189 U CN210398189 U CN 210398189U CN 201921206877 U CN201921206877 U CN 201921206877U CN 210398189 U CN210398189 U CN 210398189U
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Abstract
The utility model discloses a can be from crane of line location, include: the first support can move relative to the second support, the first elastic device is arranged between the first support and the second support, the four-bar linkage mechanism is arranged on the second support, the second support is provided with a limiting assembly capable of limiting the deformation shape of the four-bar linkage mechanism, the first support is connected to the four-bar linkage mechanism, the first support and the second support can drive the four-bar linkage mechanism to deform when moving relative to each other, the second elastic device is arranged between the second support and the four-bar linkage mechanism and can generate an elastic force capable of preventing the four-bar linkage mechanism from deforming for the four-bar linkage mechanism, the elasticity generated by the first elastic device and the elasticity generated by the second elastic device are balanced at the four-bar linkage mechanism, so that the relative position of the first support and the second support is maintained, and self-positioning is realized, the adjustment is convenient and fast.
Description
Technical Field
The utility model relates to a crane equipment field, in particular to but crane from line location.
Background
In some mounting brackets commonly used such as TV mounting bracket, display screen mounting bracket or show grillage etc. for convenient use, be provided with the structure of liftable usually, at present, the elevating system of this type of mounting bracket all need rely on artifical locking location when removing to the assigned position, uses very inconveniently.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a but the crane of self-align, the position of the equipment of lift regulation installation on the crane that can be convenient.
The utility model provides a technical scheme that its technical problem adopted is:
self-positionable crane comprising: the device comprises a first bracket, a second bracket, a first elastic device, a four-bar linkage mechanism and a second elastic device, wherein the first bracket can move relative to the second bracket, the first elastic device is arranged between the first bracket and the second bracket and can provide an elastic force pointing to the second bracket for the first bracket, and the elastic force generated by the first elastic device is larger than the force loaded by the first bracket, the four-bar linkage is arranged on the second bracket, the second bracket is provided with a limiting component capable of limiting the deformed shape of the four-bar linkage mechanism, the first bracket is connected to the four-bar linkage mechanism, the first support and the second support can drive the four-bar linkage mechanism to deform when moving relatively, and the second elastic device is arranged between the second support and the four-bar linkage mechanism and can generate elastic force capable of preventing the four-bar linkage mechanism from deforming.
One of the above technical solutions has at least one of the following advantages or beneficial effects: when the four-bar mechanism is pulled to move downwards to a certain position, the four-bar mechanism deforms due to the movement of the first support, and at the moment, the elasticity generated by the first elastic device and the elasticity generated by the second elastic device reach balance at the four-bar mechanism, so that the relative positions of the first support and the second support are kept, self-positioning is realized, and the adjustment is convenient and fast.
Preferably, the four-bar linkage is a diamond structure, and it includes last pin joint, lower pin joint, left pin joint, right pin joint, first support is connected to last pin joint, second resilient means is connected to pin joint down, left pin joint and right pin joint are respectively to the spacing subassembly, realize the force balance through the deformation of the four-bar linkage of control diamond structure.
Preferably, the first support is arranged on the second support in a sliding mode through a matching structure of a sliding rail and a pulley, so that sliding fluency is guaranteed.
Preferably, the first support is provided with a mounting rack for mounting a television or a display screen, and the second support is mounted on the wall body through a hanging plate, so that the embodiment can be used for mounting the television or the display screen and adjusting the lifting.
Preferably, the limiting assembly is a limiting rail group in a splayed structure, the left hinge point and the right hinge point are respectively abutted to the inner side of the limiting rail group in the splayed structure, and deformation of the four-bar linkage mechanism is controlled through the limiting rail group in the splayed structure.
Preferably, the left hinge point and the right hinge point are respectively provided with a roller to ensure the smoothness of the sliding of the left hinge point, the right hinge point and the limit rail set.
Preferably, the upper portion of spacing rail group is provided with the location rail portion that is the type of eight characters of falling, when not removing the state, left side pin joint, right pin joint are located location rail portion department, need the first support of pulling this moment to remove and need overcome earlier the protruding position of the type of eight characters of falling and the type of eight characters department of meeting, need operating personnel to use great pulling force side to enable first support and take place to remove, the relative position state of first support and second support when keeping not the application of force that can be better, avoid the mistake to touch or touch carelessly and just make first support remove, it is troublesome to reduce unnecessary, convenience and reliability in the improvement use.
Preferably, be provided with the concave position of location on the location rail portion, first support takes place to reciprocate when can avoiding not applying force through this concave position of location, makes things convenient for the stability that the load on the first support was placed.
Preferably, the lower end of the limit rail group of the splayed structure is provided with a lower positioning concave position so as to position the maximum relative distance between the first bracket and the second bracket, and the position of the maximum relative distance between the first bracket and the second bracket can be kept in a relatively stable state through the principle similar to the above, so that the splayed structure is convenient to use.
Preferably, the first elastic device is a tension spring mechanism, which includes a first tension spring having two ends connected to the first bracket and the second bracket, respectively, and generates a relative elastic tension between the first bracket and the second bracket by the first tension spring.
Preferably, the first elastic device further comprises a first adjusting rod arranged on the second support, the first adjusting rod is provided with a first adjusting piece in a sliding mode, one end of the first tension spring is connected to the first adjusting piece, the other end of the first tension spring is connected to the first support, and the first adjusting piece can adjust the tension of the first tension spring so as to adjust the elastic force according to different loads and improve the application range.
Preferably, the first adjusting part adjusts the position of the first adjusting rod through a thread structure, so as to realize tension adjustment.
Preferably, the second elastic device is a tension spring mechanism, which includes a second tension spring having two ends connected to the four-bar linkage mechanism and the second bracket, respectively, and generates an elastic tension between the four-bar linkage mechanism and the second bracket through the second tension spring.
Preferably, the second elastic device further comprises a second adjusting rod arranged on the second support, the second adjusting rod is provided with a second adjusting piece in a sliding mode, one end of a second tension spring is connected to the second adjusting piece, the other end of the second tension spring is connected to the four-bar mechanism, and the second adjusting piece can adjust the tension of the second tension spring so as to adjust the elastic force according to different loads and improve the application range.
Preferably, the second adjusting part adjusts the position of the second adjusting rod through a thread structure, so as to realize tension adjustment.
Preferably, the first support lower extreme is provided with connects the plate, first extension spring disposes two sets ofly, and the lower extreme of two sets of first extension springs is connected respectively in the both sides of connecting the plate to realize the relation of connection between first extension spring and the first support.
Preferably, the lower hinge point is provided with a balance plate, the second tension springs are provided with two groups, and the lower ends of the two groups of second tension springs are respectively connected to two sides of the balance plate so as to realize the connection relationship between the second tension springs and the four-bar linkage.
Preferably, the second support is provided with a baffle plate capable of shielding the four-bar linkage mechanism, so that the attractiveness of the lifting frame is improved, meanwhile, sundries and dust can be prevented from falling into the four-bar linkage mechanism, and the reliability and the stability of the action of the four-bar linkage mechanism are kept.
Preferably, a cover plate is arranged at the lower part of the second support, and an air spring which is correspondingly arranged with the first support is arranged on the cover plate, so that the impact force of the first support to the second support is reduced, the reliability and the stability of the mechanism are improved, and the noise can be reduced.
Preferably, the pulley is disposed on the cover plate, and the slide rail is disposed inside the first bracket.
Drawings
The present invention will be further described with reference to the accompanying drawings and examples;
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an exploded view of an embodiment of the present invention;
fig. 3 is a schematic view of the internal structure of a second bracket according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a four-bar linkage according to an embodiment of the present invention;
fig. 5 is a diagram illustrating a motion analysis of the four-bar linkage according to the embodiment of the present invention.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
As shown in fig. 1, 2 and 3, the self-positioning crane comprises: the device comprises a first bracket 1, a second bracket 2, a first elastic device 3, a four-bar linkage 5 and a second elastic device 4, wherein the first bracket 1 can move relative to the second bracket 2, the first elastic device 3 is arranged between the first bracket 1 and the second bracket 2, the first elastic device 3 can provide an elastic force pointing to the second bracket 2 for the first bracket 1, and the elastic force generated by the first elastic device 3 is larger than the force loaded by the first bracket 1, the four-bar linkage 5 is arranged on the second bracket 2, the second bracket 2 is provided with a limit component capable of limiting the deformation shape of the four-bar linkage 5, the first bracket 1 is connected to the four-bar linkage 5, and the first bracket 1 and the second bracket 2 can drive the four-bar linkage 5 to deform when moving relatively, the second elastic device 4 is arranged between the second bracket 2 and the four-bar linkage 5, and is capable of generating an elastic force to the four-bar linkage 5 capable of preventing the four-bar linkage 5 from being deformed.
When the device is used, the first support 1 is used for placing loads such as a television and a display screen, the second support 2 is fixedly installed, when the device is in a static state, the elastic force generated by the first elastic device 3 is larger than the force loaded by the first support 1, so that the relative positions of the first support 1 and the second support 2 can be kept, when the first support 1 is pulled to move downwards to a certain position, the four-bar mechanism 5 deforms due to the movement of the first support 1, at the moment, the elasticity generated by the first elastic device 3 and the elasticity generated by the second elastic device 4 reach balance at the four-bar mechanism 5, the relative positions of the first support 1 and the second support 2 are kept, self-positioning is realized, and the adjustment is convenient and quick.
In the embodiment, the limiting component can control the deformed shape of the four-bar linkage 5 along with the movement of the first bracket 1, so as to realize a state that the elasticity generated by the first elastic device 3 and the elasticity generated by the second elastic device 4 are approximately balanced at the four-bar linkage 5 at different stop positions of the first bracket 1, thereby meeting the self-positioning function.
Preferably, as shown in fig. 3 and 4, in some embodiments, the four-bar linkage 5 is a diamond structure, and includes an upper hinge point 51, a lower hinge point 52, a left hinge point 53 and a right hinge point 54, the first bracket 1 is connected to the upper hinge point 51, the second elastic device 4 is connected to the lower hinge point 52, the left hinge point 53 and the right hinge point 54 are respectively abutted to the limiting component, and the force balance is achieved by controlling the deformation of the four-bar linkage 5 with the diamond structure.
Preferably, as shown in fig. 2, in some embodiments, the first bracket 1 is slidably disposed on the second bracket 2 through a matching structure of a sliding rail 91 and a pulley 92, so as to ensure the smoothness of sliding.
Preferably, as shown in fig. 2, in some embodiments, the first bracket 1 is provided with a mounting rack 94 for mounting a television or a display screen, and the second bracket 2 is mounted on a wall through a hanging plate 93, so that the embodiment can be used for mounting and adjusting the television or the display screen.
Preferably, as shown in fig. 3, in some embodiments, the position-limiting component is a position-limiting rail set 6 in a splayed structure, and the left hinge point 53 and the right hinge point 54 respectively abut against the inner side of the position-limiting rail set 6 in the splayed structure, and the deformation of the four-bar linkage 5 is controlled by the position-limiting rail set 6 in the splayed structure.
Specifically, as shown in fig. 5, the angle change of the angle a in the four-bar linkage 5 is controlled by the position-limiting rail group 6 having the splay structure, as shown in fig. 5, the elastic force F1 generated by the first elastic device 3 minus the gravity G of the load acts on the upper hinge point 51 on the four-bar linkage 5 as F, the elastic force of the second elastic device 4 on the lower hinge point 52 of the four-bar linkage 5 as F2, F pulls the upper hinge point 51 upward to move, due to the limitation of the position-limiting rail group 6 having the splay structure, the angle a tends to decrease, and at the same time, F2 pulls the lower hinge point 52 upward to increase the angle a, i.e., F tends to narrow the four-bar linkage 5, and F2 tends to widen the four-bar linkage 5, so that the two reach a balanced state, thereby satisfying the self-positioning.
In the process, the limit rail group 6 with the splayed structure controls the variation trend of the four-bar linkage mechanism 5, and can balance the elastic force of each stretching position to achieve the self-positioning effect.
Preferably, as shown in fig. 3 and 4, in some embodiments, rollers 55 are respectively disposed on the left hinge point 53 and the right hinge point 54 to ensure the smoothness of sliding between the left hinge point 53 and the right hinge point 54 and the position-limiting rail set 6.
Preferably, as shown in fig. 3, in some embodiments, the upper portion of the position-limiting rail set 6 is provided with a positioning rail portion 61 in an inverted-v shape, when the position-limiting rail set is not moved, the left hinge point 53 and the right hinge point 54 are located at the positioning rail portion 61, at this time, the first bracket 1 needs to be pulled to move, the protruding position of the junction between the inverted-v shape and the inverted-v shape needs to be overcome, an operator needs to use a larger pulling force to move the first bracket 1, that is, the relative position state of the first bracket 1 and the second bracket 2 when the force is not applied can be better maintained, the first bracket 1 is prevented from being moved by touching the first bracket 1 by mistake or carelessly, unnecessary troubles are reduced, and convenience and reliability in use are improved.
Preferably, as shown in fig. 3, in some embodiments, the positioning rail portion 61 is provided with a positioning concave portion, through which the first bracket 1 can be prevented from moving up and down when no force is applied, so as to facilitate the stability of the load on the first bracket 1.
Preferably, as shown in fig. 3, in some embodiments, the lower end of the position-limiting rail set 6 of the splayed structure is provided with a lower positioning concave 60 to position the maximum relative distance between the first bracket 1 and the second bracket 2, and by using a principle similar to that described above, a relatively stable state can be maintained at the position of the maximum relative distance between the first bracket 1 and the second bracket 2, which is convenient for use.
Preferably, as shown in fig. 3, in some embodiments, the first elastic device 3 is a tension spring mechanism including a first tension spring 31 having two ends respectively connected to the first bracket 1 and the second bracket 2, and the first tension spring 31 generates a relative elastic tension between the first bracket 1 and the second bracket 2.
Of course, in the specific implementation process, the elastic pulling force can also be generated by using an elastic rubber strip, which is not described in detail herein. In addition, in the specific implementation process, the first tension spring 31 may be configured with one or more groups, and in this embodiment, two groups are preferably adopted and symmetrically distributed on two sides, so as to achieve left-right balance.
Preferably, as shown in fig. 3, in some embodiments, the first elastic device 3 further includes a first adjusting lever 32 disposed on the second bracket 2, the first adjusting lever 32 is slidably disposed with a first adjusting member 33, one end of the first tension spring 31 is connected to the first adjusting member 33, and the other end of the first tension spring 31 is connected to the first bracket 1, and the tension of the first tension spring 31 can be adjusted by the first adjusting member 33, so as to adjust the elastic force according to different loads, thereby improving the application range.
Preferably, in some embodiments, the first adjusting member 33 adjusts the position of the first adjusting rod 32 by a screw structure to achieve the tension adjustment, and of course, in the implementation, the first adjusting member 33 can also achieve the position adjustment by a detent or a latch, etc., which will not be described in detail herein.
Preferably, as shown in fig. 3, in some embodiments, the second elastic device 4 is a tension spring mechanism, which includes a second tension spring 41 connected to the four-bar linkage 5 and the second bracket 2 at two ends, respectively, and the elastic tension between the four-bar linkage 5 and the second bracket 2 is generated by the second tension spring 41.
Of course, in the specific implementation process, the elastic pulling force can also be generated by using an elastic rubber strip, which is not described in detail herein. In addition, in the specific implementation process, the second tension spring 41 may be configured with one or more groups, and in this embodiment, two groups are preferably adopted and symmetrically distributed on two sides, so as to achieve left-right balance.
Preferably, as shown in fig. 3, in some specific embodiments, the second elastic device 4 further includes a second adjusting lever 42 disposed on the second bracket 2, the second adjusting lever 42 is slidably disposed with a second adjusting member 43, one end of the second tension spring 41 is connected to the second adjusting member 43, and the other end thereof is connected to the four-bar linkage 5, and the tension of the second tension spring 41 can be adjusted by the second adjusting member 43, so as to adjust the elastic force according to different loads, thereby improving the application range.
Preferably, in some embodiments, the second adjusting member 43 adjusts the position of the second adjusting rod 42 through a screw structure to achieve the tension adjustment, and of course, the second adjusting member 43 can also achieve the position adjustment through a detent or a latch, etc. in the implementation process, which will not be described in detail herein.
Preferably, as shown in fig. 3, in some embodiments, the lower end of the first bracket 1 is provided with a connecting plate 11, the first extension springs 31 are configured in two groups, and the lower ends of the two groups of first extension springs 31 are respectively connected to two sides of the connecting plate 11, so as to realize the connection relationship between the first extension springs 31 and the first bracket 1.
Preferably, as shown in fig. 3, in some embodiments, the first bracket 1 is connected to the upper hinge point 51 by a connecting rod 12, and the connecting rod 12 passes through the lower hinge point 52, and the connecting rod 12 and the lower hinge point 52 are relatively movable.
Preferably, as shown in fig. 3, in some embodiments, a balance plate 521 is disposed at the lower hinge point 52, two sets of the second extension springs 41 are disposed, and the lower ends of the two sets of the second extension springs 41 are respectively connected to two sides of the balance plate 521, so as to realize the connection relationship between the second extension springs 41 and the four-bar linkage 5.
Preferably, as shown in fig. 3, in some embodiments, the second support 2 is provided with a baffle 21 capable of shielding the four-bar linkage 5, so as to improve the aesthetic property of the crane, and at the same time, prevent impurities and dust from falling into the four-bar linkage 5, and maintain the reliability and stability of the action of the four-bar linkage.
Preferably, as shown in fig. 3, in some embodiments, a cover plate 22 is disposed at the lower portion of the second bracket 2, and a buffer device disposed corresponding to the first bracket 1 is disposed on the cover plate 22 to reduce the impact force of the first bracket 1 to the second bracket 2, improve the reliability and stability of the mechanism, and reduce noise.
Preferably, as shown in fig. 3, in some embodiments, the buffer device is a gas spring 23, but of course, the buffer device may also be a compression spring during the implementation process, which is not described in detail herein.
Preferably, as shown in fig. 3, in some embodiments, the pulley 92 is disposed on the cover plate 22, and the slide rail 91 is disposed inside the first bracket 1.
It is readily understood by those skilled in the art that the above-described preferred modes can be freely combined and superimposed without conflict.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (10)
1. Can be from crane of location, its characterized in that includes:
a first bracket (1);
a second carriage (2), the first carriage (1) being movable relative to the second carriage (2);
the first elastic device (3) is arranged between the first support (1) and the second support (2), the first elastic device (3) can provide an elastic force pointing to the second support (2) for the first support (1), and the elastic force generated by the first elastic device (3) is greater than the force loaded by the first support (1);
the four-bar linkage mechanism (5) is arranged on the second support (2), a limiting component capable of limiting the deformation shape of the four-bar linkage mechanism (5) is arranged on the second support (2), the first support (1) is connected to the four-bar linkage mechanism (5), and the four-bar linkage mechanism (5) can be driven to deform when the first support (1) and the second support (2) move relatively;
and the second elastic device (4) is arranged between the second bracket (2) and the four-bar linkage mechanism (5), and can generate an elastic force capable of preventing the four-bar linkage mechanism (5) from deforming on the four-bar linkage mechanism (5).
2. A self-positionable crane according to claim 1,
the four-bar mechanism (5) is of a diamond structure and comprises an upper hinge point (51), a lower hinge point (52), a left hinge point (53) and a right hinge point (54), the first support (1) is connected to the upper hinge point (51), the second elastic device (4) is connected to the lower hinge point (52), and the left hinge point (53) and the right hinge point (54) are respectively abutted to the limiting assembly.
3. A self-positionable crane according to claim 2,
the limiting assembly is a limiting rail group (6) of a splayed structure, and the left hinge point (53) and the right hinge point (54) are respectively abutted to the inner side of the limiting rail group (6) of the splayed structure.
4. A self-positionable crane according to claim 2 or 3,
and the left hinge point (53) and the right hinge point (54) are respectively provided with a roller (55).
5. A self-positionable crane according to claim 3,
and a positioning rail part (61) in an inverted splayed shape is arranged at the upper part of the limiting rail group (6).
6. A self-positionable crane according to claim 5,
the positioning rail part (61) is provided with a positioning concave position.
7. A self-positionable crane according to claim 1,
the first elastic device (3) is a tension spring mechanism, and comprises a first tension spring (31) with two ends connected to the first support (1) and the second support (2) respectively.
8. A self-positionable crane according to claim 7,
the first elastic device (3) further comprises a first adjusting rod (32) arranged on the second support (2), the first adjusting rod (32) is provided with a first adjusting piece (33) in a sliding mode, one end of the first tension spring (31) is connected to the first adjusting piece (33), the other end of the first tension spring is connected to the first support (1), and the tension of the first tension spring (31) can be adjusted through the first adjusting piece (33).
9. A self-positionable crane according to claim 1,
the second elastic device (4) is a tension spring mechanism, and comprises a second tension spring (41) with two ends respectively connected to the four-bar mechanism (5) and the second support (2).
10. A self-positionable crane according to claim 9,
the second elastic device (4) further comprises a second adjusting rod (42) arranged on the second support (2), the second adjusting rod (42) is provided with a second adjusting piece (43) in a sliding mode, one end of a second tension spring (41) is connected to the second adjusting piece (43), the other end of the second tension spring is connected to the four-bar mechanism (5), and the tension of the second tension spring (41) can be adjusted through the second adjusting piece (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921206877.0U CN210398189U (en) | 2019-07-26 | 2019-07-26 | Self-positioning lifting frame |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921206877.0U CN210398189U (en) | 2019-07-26 | 2019-07-26 | Self-positioning lifting frame |
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| CN210398189U true CN210398189U (en) | 2020-04-24 |
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| CN201921206877.0U Active CN210398189U (en) | 2019-07-26 | 2019-07-26 | Self-positioning lifting frame |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375160A (en) * | 2019-07-26 | 2019-10-25 | 中山市宜高机电科技有限公司 | Crane that can be self-positioning |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375160A (en) * | 2019-07-26 | 2019-10-25 | 中山市宜高机电科技有限公司 | Crane that can be self-positioning |
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