CN216577942U - Electric screw rod telescopic arm device - Google Patents
Electric screw rod telescopic arm device Download PDFInfo
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- CN216577942U CN216577942U CN202123131936.2U CN202123131936U CN216577942U CN 216577942 U CN216577942 U CN 216577942U CN 202123131936 U CN202123131936 U CN 202123131936U CN 216577942 U CN216577942 U CN 216577942U
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Abstract
The utility model provides an electric screw rod telescopic arm device, and aims to solve the problems that the peripheral equipment of a driving unit of a lifting device in the prior art is easy to damage, and the occupied space is large in the lifting process. The electric screw rod telescopic arm device comprises a fixed arm, wherein the middle part of the fixed arm is provided with a sliding through hole; the telescopic arm is sleeved in the sliding through hole of the fixed arm in a sliding manner, and the middle part of the telescopic arm is provided with an installation through hole; the nut is arranged at one end of the telescopic arm and is connected with the wall of the installation through hole; the screw is sleeved in the nut; one end of the sliding through hole extends into the mounting through hole, and the other end of the sliding through hole extends into the sliding through hole; the switching mechanism is arranged in the sliding through hole and connected with the screw rod; the force increasing mechanism is connected with the conversion mechanism; and the driving motor is connected with the force increasing mechanism. The driving mechanism of the telescopic rod is arranged in the telescopic wall, so that the driving mechanism is prevented from being directly damaged when collision occurs, and meanwhile, the driving mechanism is arranged in the telescopic wall, so that the size of the whole telescopic device can be reduced.
Description
Technical Field
The utility model relates to the technical field of electric extension, in particular to an electric screw rod telescopic arm device.
Background
In the production process, heavy work piece mostly all can adopt flexible arm to go up and down, and the drive unit setting of current flexible arm structure is in flexible arm outside, and drive unit receives the damage easily, and flexible arm needs great activity space at the lift in-process, just can accomplish and go up and down.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems that the driving unit of the lifting device in the prior art is easy to damage, and the occupied space is large in the lifting process, and provides an electric screw rod telescopic arm device.
The technical scheme adopted by the utility model is as follows:
an electric screw telescopic arm device, comprising:
the middle part of the fixed arm is provided with a sliding through hole;
the telescopic arm is sleeved in the sliding through hole of the fixed arm in a sliding manner, and the middle part of the telescopic arm is provided with an installation through hole;
the nut is arranged at one end of the telescopic arm and is connected with the wall of the installation through hole;
the screw rod is sleeved in the nut; one end of the sliding through hole extends into the mounting through hole, and the other end of the sliding through hole extends into the sliding through hole;
the switching mechanism is arranged in the sliding through hole and is connected with the screw;
the force increasing mechanism is connected with the conversion mechanism;
and the power output end of the driving motor is connected with the force increasing mechanism.
Optionally, the electric screw rod telescopic arm device further comprises:
the stop block is arranged at one end, located in the mounting through hole, of the screw rod, and the outer diameter of the stop block is larger than the diameter of the screw hole of the nut.
Optionally, the electric screw rod telescopic arm device further comprises:
and the position sensor is arranged at one end of the switching mechanism close to the nut.
Optionally, the electric screw rod telescopic arm device further comprises:
the signal output end of the controller is connected with the signal input end of the driving motor; and the signal input end of the controller is connected with the signal output end of the position sensor.
Optionally, the conversion mechanism further comprises:
and the nut is connected with the inner ring of the joint bearing, and the outer ring of the joint bearing is connected with the hole wall of the mounting through hole.
Optionally, the conversion mechanism comprises:
the engine body is provided with a through hole in the middle;
a first bearing mounted in the through hole;
the second bearing is arranged in the through hole and is positioned on one side of the first bearing;
the first thrust bearing is arranged in the through hole and is positioned on one side, far away from the second bearing, of the first bearing;
the second thrust bearing is arranged in the through hole and is positioned on one side, far away from the first bearing, of the second bearing;
one end of the rotating shaft is connected with the power output end of the force increasing mechanism, and the other end of the rotating shaft penetrates through the first thrust bearing, the first bearing, the second bearing and the second thrust bearing in sequence and then is connected with the screw;
the front cover is arranged at one end of the first thrust bearing, which is far away from the first bearing;
and the tail cover is arranged at one end of the second thrust bearing, which is far away from the second bearing.
Optionally, the conversion mechanism further comprises:
a first baffle plate disposed between the first bearing and the first thrust bearing; and
a second baffle disposed between the second bearing and the second thrust bearing.
Optionally, the conversion mechanism further comprises:
a first seal mounted between the front cover and the first thrust bearing; and
a second seal mounted between the tail cap and the second thrust bearing.
Optionally, the first connecting piece is arranged on each of the opposite side walls in the sliding through hole of the fixing arm; and a second connecting piece matched with the first connecting piece is arranged on the outer side wall of the machine body, and the first connecting piece and the second connecting piece are connected through a pin.
Optionally, the rotating shaft is stepped, the diameter of the middle part of the rotating shaft is larger than the diameters of the two ends of the rotating shaft, and the first bearing and the first thrust bearing are mounted at one end of the rotating shaft; the second bearing and the second thrust bearing are mounted at the other end.
Compared with the prior art, the utility model has the beneficial effects that:
1. related driving mechanisms are placed in the telescopic arms, so that the related driving mechanisms and components can be fully protected from being damaged by impact, and the space is saved.
2. The conversion mechanism is arranged, and the technical problem that large rotation torque is converted into linear thrust is solved. The torque of the motor and the force increasing mechanism can be fully exerted.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of an electric screw telescopic arm device.
Fig. 2 is a schematic structural diagram of a switching mechanism of an electric screw rod telescopic arm device.
Reference numerals:
1. a drive motor; 2. a force increasing mechanism; 3. a switching mechanism; 4. a pin shaft; 5. a nut; 6. a knuckle bearing; 7. a screw; 8. a fixed arm; 9. a telescopic arm; 10. a stopper; 11. a position sensor; 12. a first bearing; 13. a first thrust bearing; 14. a body; 15. a second thrust bearing; 16. a rotating shaft; 17. a tail cover; 18. a second bearing; 19. a first separator; 20. a second separator; 21. a front cover; 22. a first seal member; 23. a second seal member; 24. and a controller.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate an orientation or positional relationship based on that shown in the drawings, or the orientation or positional relationship conventionally used in the use of the products of the present invention, or the orientation or positional relationship conventionally understood by those skilled in the art, are merely for convenience and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the utility model. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the present invention provides an electric screw telescopic arm device, including: the device comprises a fixed arm 8, a telescopic arm 9, a nut 5, a screw 7, a conversion mechanism 3, a force-increasing mechanism 2 and a driving motor 1, wherein the middle part of the fixed arm 8 is provided with a sliding through hole; the telescopic arm 9 is sleeved in the sliding through hole of the fixed arm in a sliding manner, and the middle part of the telescopic arm 9 is provided with an installation through hole; the nut 5 is arranged at one end of the telescopic arm 9 and is connected with the wall of the installation through hole; the screw 7 is sleeved in the nut 5; one end of the sliding through hole extends into the mounting through hole, and the other end of the sliding through hole extends into the sliding through hole; the switching mechanism 3 is arranged in the sliding through hole and is connected with the screw 7; the force increasing mechanism 2 is connected with the switching mechanism 3; the power output end of the driving motor 1 is connected with the force-increasing mechanism 2.
When the device is used, the driving motor 1 rotates to drive the force increasing mechanism 2 to move, the force increasing mechanism 2 transmits power to the conversion mechanism 3, the conversion mechanism 3 is connected with the screw 7, the nut 5 is driven to move along the axis of the screw 7 through rotation of the screw 7, the nut 5 is connected with the telescopic arm 9, and the nut 5 drives the telescopic arm 9 to extend out of the fixed arm 8 or retract into the telescopic arm 9 in the moving process. Related driving mechanisms are placed inside the telescopic arms 9, so that related power units and components can be fully protected from being damaged by impact, and space is saved. The switching mechanism 3 is arranged, so that the technical problem of converting large rotation torque into linear thrust is solved. The full play of the torque of the motor and the force increasing mechanism 2 is facilitated.
In another embodiment, as shown in fig. 1, to avoid the nut 5 from coming off the screw 7 during the movement, a stop 10 is provided at the end of the screw 7, the stop 10 having an outer diameter greater than the diameter of the threaded hole of said nut 5.
In another embodiment, as shown in fig. 1, in order to facilitate detection of the distance between the nut 5 and the shift mechanism 3, a position sensor 11 is mounted on the outer sidewall of the shift mechanism 3.
In another embodiment, as shown in fig. 1, in order to conveniently control the extending length of the telescopic arm 9, a controller 24 is provided, and a signal output end of the controller 24 is connected with a signal input end of the driving motor 1; a signal input of the controller 24 is connected to a signal output of the position sensor 11.
In another embodiment, as shown in fig. 1, in order to fix the nut 5 to the telescopic arm 9, the knuckle bearing 6 is provided in the mounting through hole of the telescopic arm 9, and the nut 5 is fixed in the inner ring of the knuckle bearing 6.
In another embodiment, as shown in fig. 1 and 2, the technical problem of converting large rotation torque into linear thrust is solved. The conversion mechanism 3 is beneficial to the full exertion of the torque of the motor and the force-increasing mechanism 2, and comprises: a machine body 14, a first bearing 12, a second bearing 18, a first thrust bearing 13, a second thrust bearing 15, a rotating shaft 16, a front cover 21 and a tail cover 17; the middle part of the machine body 14 is provided with a through hole; a first bearing 12 is mounted in the through hole; a second bearing 18 is arranged in the through hole and is positioned at one side of the first bearing 12; a first thrust bearing 13 is arranged in the through hole and is positioned on one side of the first bearing 12 far away from the second bearing 18; a second thrust bearing 15 is mounted in the through hole and is positioned on the side of the second bearing 18 away from the first bearing 12; one end of the rotating shaft 16 is connected with the power output end of the force increasing mechanism 2, and the other end of the rotating shaft passes through the first thrust bearing 13, the first bearing 12, the second bearing 18 and the second thrust bearing 15 in sequence and then is connected with the screw 7; a front cover 21 is arranged at one end of the first thrust bearing 13 far away from the first bearing 12; a tail cap 17 is mounted on the end of the second thrust bearing 15 remote from the second bearing 18.
In another embodiment, as shown in fig. 2, in order to avoid friction between the bearing and the thrust bearing, a first baffle is provided between the first bearing 12 and the first thrust bearing 13; a second baffle is provided between the second bearing 18 and the second thrust bearing 15.
In another embodiment, as shown in fig. 2, in order to avoid the rapid outflow of the lubricant in the machine body 14, a first sealing member 22 is provided between the front cover 21 and the first thrust bearing 13; a second seal 23 is provided between the tail cap 17 and the second thrust bearing 15. The first seal 22 and the second seal 23 are sealing rings of known design.
In another embodiment, as shown in fig. 2, in order to connect the body 14 to the fixing arm 8, first connecting members are provided on opposite side walls in the sliding through hole of the fixing arm 8; and a second connecting piece matched with the first connecting piece is arranged on the outer side wall of the machine body 14, and the first connecting piece and the second connecting piece are connected through a pin.
In another embodiment, as shown in fig. 2, in order to facilitate the spacing of the first bearing 12 and the second bearing 18, the rotating shaft 16 is stepped, the diameter of the middle part is larger than that of the two ends, and the first bearing 12 and the first thrust bearing 13 are installed at one end; the second bearing 18 and the second thrust bearing 15 are mounted at the other end.
The specific working principle is as follows:
the driving motor 1 is fixedly connected with the force increasing mechanism 2 through a key; the force increasing mechanism 2 is fixedly connected with a front cover 21 of the conversion joint through a key. The adapter is connected with the fixing arm 8 through a pin shaft 4. The nut 5 is connected with the telescopic arm 9 through a joint bearing 6; the screw 7 is fixedly connected with the rotating shaft 16 through a key. The stop block 10 is fixedly connected with the screw 7. And the screw 7 is in threaded connection with the nut 5. And can be moved linearly by rotation. The sensor is arranged on the conversion joint and used for detecting the relative position change relation between the nut 5 and the conversion joint; the driving motor 1 and the sensor are connected with the controller 24 through cables.
The first thrust bearing 13 and the second thrust bearing 15 are installed on both sides of the shoulder of the rotating shaft 16, and the inner key end of the rotating shaft 16 is installed into the machine body 14 toward the front cover 21 end; the first partition plate 19 and the first bearing 12 are fitted into the body 14 in this order from the inner key end of the rotary shaft 16; the first sealing element 22 is arranged on the inner side surface of the front cover 21, and the inner side surface of the front cover 21 faces the machine body 14, is matched with the rotating shaft 16 and is fixedly connected with the end surface of the machine body 14; similarly, a second partition 20 and a second bearing 18 are sequentially installed in the body 14 at the other end of the rotary shaft 16. Then, the second sealing element 23 is installed inside the tail cover 17, and the tail cover 17 is matched with the rotating shaft 16 and fixedly connected with the end face of the machine body 14. During assembly, the inner cavity of the housing 14 is filled with a certain amount of grease, thereby reducing mechanical wear and increasing the service life of the components.
After the controller 24 sends out length data of the telescopic arm 9 to be stretched out, the driving motor 1 is started, the force-increasing mechanism 2 and the adapter are sequentially driven to start working, and the adapter drives the screw 7 to start rotating; the screw 7 and the nut 5 are assembled together through threads, and the nut 5 and the telescopic arm 9 are pinned together through the joint bearing 6. The relative movement of the screw 7 and the nut 5 is also converted into a linear movement of the telescopic arm 9. The size of the extension length of the telescopic arm 9 is judged by detecting the change of the size of the relative position data between the nut 5 and the conversion joint by the position sensor 11.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an electronic screw rod telescopic arm device which characterized in that includes:
the middle part of the fixed arm is provided with a sliding through hole;
the telescopic arm is sleeved in the sliding through hole of the fixed arm in a sliding manner, and the middle part of the telescopic arm is provided with an installation through hole;
the nut is arranged at one end of the telescopic arm and is connected with the wall of the installation through hole;
the screw rod is sleeved in the nut; one end of the sliding through hole extends into the mounting through hole, and the other end of the sliding through hole extends into the sliding through hole;
the switching mechanism is arranged in the sliding through hole and is connected with the screw;
the force increasing mechanism is connected with the conversion mechanism;
and the power output end of the driving motor is connected with the force increasing mechanism.
2. The electric screw telescopic arm device according to claim 1, further comprising:
the stop block is arranged at one end, located in the mounting through hole, of the screw rod, and the outer diameter of the stop block is larger than the diameter of the screw hole of the nut.
3. The electric screw telescopic arm device according to claim 1, further comprising:
and the position sensor is arranged at one end of the switching mechanism close to the nut.
4. The electric screw telescopic arm device according to claim 3, further comprising:
the signal output end of the controller is connected with the signal input end of the driving motor; and the signal input end of the controller is connected with the signal output end of the position sensor.
5. The electric screw telescopic arm device according to claim 1, wherein the conversion mechanism further comprises:
and the nut is connected with the inner ring of the joint bearing, and the outer ring of the joint bearing is connected with the hole wall of the mounting through hole.
6. The electric screw telescopic arm device according to claim 1, wherein the conversion mechanism comprises:
the engine body is provided with a through hole in the middle;
a first bearing mounted in the through hole;
the second bearing is arranged in the through hole and is positioned on one side of the first bearing;
the first thrust bearing is arranged in the through hole and is positioned on one side, far away from the second bearing, of the first bearing;
the second thrust bearing is arranged in the through hole and is positioned on one side, far away from the first bearing, of the second bearing;
one end of the rotating shaft is connected with the power output end of the force increasing mechanism, and the other end of the rotating shaft penetrates through the first thrust bearing, the first bearing, the second bearing and the second thrust bearing in sequence and then is connected with the screw;
the front cover is arranged at one end of the first thrust bearing, which is far away from the first bearing;
and the tail cover is arranged at one end of the second thrust bearing, which is far away from the second bearing.
7. The electric screw telescopic arm device according to claim 6, wherein the conversion mechanism further comprises:
a first baffle plate disposed between the first bearing and the first thrust bearing; and
a second baffle disposed between the second bearing and the second thrust bearing.
8. The electric screw telescopic arm device according to claim 6, wherein the conversion mechanism further comprises:
a first seal mounted between the front cover and the first thrust bearing; and
a second seal mounted between the tail cap and the second thrust bearing.
9. The electric screw rod telescopic arm device according to claim 6, wherein the first connecting piece is arranged on each of the opposite side walls in the sliding through hole of the fixing arm; and a second connecting piece matched with the first connecting piece is arranged on the outer side wall of the machine body, and the first connecting piece and the second connecting piece are connected through a pin.
10. The electric screw telescopic arm device according to claim 6, wherein the rotating shaft is stepped, the diameter of the middle part is larger than the diameters of the two ends, and the first bearing and the first thrust bearing are mounted at one end; the second bearing and the second thrust bearing are mounted at the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123131936.2U CN216577942U (en) | 2021-12-14 | 2021-12-14 | Electric screw rod telescopic arm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123131936.2U CN216577942U (en) | 2021-12-14 | 2021-12-14 | Electric screw rod telescopic arm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216577942U true CN216577942U (en) | 2022-05-24 |
Family
ID=81612094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123131936.2U Active CN216577942U (en) | 2021-12-14 | 2021-12-14 | Electric screw rod telescopic arm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216577942U (en) |
-
2021
- 2021-12-14 CN CN202123131936.2U patent/CN216577942U/en active Active
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