Lifting driving device of rod piece cross arm and rod piece

Abstract

The utility model discloses a lifting driving device of a rod piece cross arm and a rod piece, the lifting driving device comprises a sliding mechanism and a sliding driving mechanism, the sliding mechanism comprises a sliding sleeve and a sliding guide assembly, and the sliding sleeve is used for being in sliding fit with a guide groove formed in the height direction of a vertical rod through the sliding guide assembly so as to be slidably arranged on the vertical rod in a sleeving mode; the sliding sleeve is configured to be connected with the cross arm; the sliding driving mechanism comprises a sliding power source and a sliding transmission assembly, and the sliding power source is configured to be installed on the vertical rod and connected with the sliding sleeve through the sliding transmission assembly so as to drive the sliding sleeve to slide back and forth between the first stroke position and the second stroke position in the height direction of the vertical rod through the sliding transmission assembly. The sliding power source drives the sliding sleeve to reciprocate in the height direction of the vertical rod through the sliding transmission assembly so as to synchronously drive the cross arm to move, the cross arm can be moved to the height suitable for operation of an operator, the operator does not need to climb to work at the height, construction danger is reduced, and operation of the operator is facilitated.

Description

Technical Field

[0001] This application relates to the field of light pole technology, specifically to a lifting drive device for a pole arm and a pole. Background Technology

[0002] The poles can be of various types, such as street light poles, traffic signal poles, and traffic sign poles. Street lights, traffic signals, and traffic signs all need to be installed on the horizontal arm of the pole. The installation process requires construction workers to work at height, which is dangerous and inconvenient to operate. Utility Model Content

[0003] This application aims to provide a lifting drive device and rod for a crossarm, so as to adjust the height of the crossarm, reduce construction hazards, and facilitate operation.

[0004] According to a first aspect of this application, this application provides a lifting drive device for a lever arm, comprising:

[0005] A sliding mechanism includes a sliding sleeve and a sliding guide assembly. The sliding sleeve is slidably fitted onto the upright by slidingly engaging with a guide groove disposed in the height direction of the upright through the sliding guide assembly. The sliding sleeve is configured to connect a cross arm.

[0006] A sliding drive mechanism includes a sliding power source and a sliding transmission assembly. The sliding power source is configured to be mounted on the upright and connected to the sliding sleeve through the sliding transmission assembly, so as to drive the sliding sleeve to reciprocate between a first stroke position and a second stroke position along the height direction of the upright through the sliding transmission assembly.

[0007] In some embodiments, the sliding guide assembly includes at least one set of guide wheels, each set including two first guide wheels, one second guide wheel, and a mounting bracket. The mounting bracket is fixed to the inner wall of the sliding sleeve. The two first guide wheels are rotatably connected to the mounting bracket at intervals, and the axis of the first guide wheel is perpendicular to the inner wall of the sliding sleeve. The second guide wheel is rotatably connected to the mounting bracket and located between the two first guide wheels, and the axis of the first guide wheel is parallel to the inner wall of the sliding sleeve. The two first guide wheels are rotatably in contact with the sidewall of the guide groove, and the second guide wheel is rotatably in contact with the bottom wall of the guide groove. The sliding transmission assembly is disposed in the guide groove.

[0008] In some embodiments, the sliding transmission assembly includes a driving wheel, a driven wheel, and a transmission element. The driving wheel is coaxially connected to the drive shaft of the sliding power source and extends to the guide groove of the upright. The driven wheel is rotatably mounted in the guide groove of the upright and spaced apart from the driving wheel. The transmission element is sleeved on the driving wheel and the driven wheel, and the transmission element is fixedly connected to the inner wall of the sliding sleeve. The sliding power source is used to output a motion that drives the driving wheel to rotate forward or backward, so as to drive the sliding sleeve to reciprocate between a first stroke position and a second stroke position along the height direction of the upright through the transmission element.

[0009] In some embodiments, the sidewall of the guide groove is formed with a clearance space for avoiding the transmission element.

[0010] In some embodiments, the inner wall of the sliding sleeve is further provided with a misalignment part, which is aligned with the groove of the guide groove; the misalignment part is configured to perform installation alignment when the sliding sleeve is assembled onto the upright.

[0011] In some embodiments, the sliding drive mechanism further includes a first limiting unit and a second limiting unit respectively spaced apart on the upright. Both the first limiting unit and the second limiting unit are electrically connected to the sliding power source. The first limiting unit is configured to control the sliding power source to stop working when the sliding sleeve slides upward along the height direction of the upright to a first stroke position. The second limiting unit is configured to control the sliding power source to stop working when the sliding sleeve slides downward along the height direction of the upright to a second stroke position.

[0012] In some embodiments, the sliding drive mechanism further includes a first buffer unit and a second buffer unit respectively spaced apart on the upright. The first buffer unit is configured to buffer the sliding sleeve when it slides upward along the height direction of the upright to a first stroke position, and the second buffer unit is configured to buffer the sliding sleeve when it slides downward along the height direction of the upright to a second stroke position.

[0013] In some embodiments, a lighting unit is also included, which is configured to be mounted on the top of the pole.

[0014] In some embodiments, a movable base is also included, which is configured to be attached to the bottom of the pole.

[0015] According to a second aspect of this application, this application provides a lever, including a lifting drive device for the lever's cross arm; further comprising:

[0016] A pole, wherein the pole has a guide groove along the height direction on its outer surface;

[0017] A horizontal arm, which is connected to the sliding sleeve.

[0018] According to the above embodiment, the lifting drive device and rod of the cross arm are provided. The sliding sleeve is slidably sleeved on the upright. The sliding power source drives the sliding sleeve to reciprocate along the height direction of the upright through the sliding transmission assembly, so as to synchronously drive the cross arm to move. The cross arm can be moved to a height suitable for the operator to operate. At this height, the operator does not need to climb to work, reducing the construction danger and facilitating the operator to operate. Attached Figure Description

[0019] Figure 1 The three-dimensional rod provided in this application Figure 1 ;

[0020] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle;

[0021] Figure 3 for Figure 1 A magnified view of a portion of point B in the middle;

[0022] Figure 4 Section of the rod provided in this application Figure 1 ;

[0023] Figure 5 for Figure 4 A magnified view of a portion of point C in the middle;

[0024] Figure 6 for Figure 4 A magnified view of a portion of point D in the middle;

[0025] Figure 7 Section of the rod provided in this application Figure 2 ;

[0026] Figure 8 for Figure 7 A magnified view of a portion of point E in the middle;

[0027] Figure 9 for Figure 7 A magnified view of a portion of point F in the middle;

[0028] Figure 10 The three-dimensional rod provided in this application Figure 2 ;

[0029] Figure 11 A perspective view of the sliding sleeve in the sliding mechanism of the rod provided in this application;

[0030] Figure 12 A perspective view of the upright pole provided in this application;

[0031] Figure 13 for Figure 12 A magnified view of a portion of point G in the middle;

[0032] Figure 14 The structural block diagram of the rod provided in this application is controlled by remote control.

[0033] Figure label:

[0034] Upright pole 10, guide groove 11, clearance space 111, sliding mechanism 20, sliding sleeve 21, foolproof part 211, cross arm 22, traffic monitoring equipment 220, sliding guide assembly 23, first guide wheel 231, second guide wheel 232, mounting bracket 233, fixing part 24, cross arm connector 25, sliding drive mechanism 30, sliding power source 31, sliding transmission assembly 32, driving wheel 321, driven wheel 322, transmission element 323, first limit unit 34, second limit unit 35, first buffer unit 36, second buffer unit 37, lighting unit 40, movable base 50, seat body 51, universal wheel 52, positioning assembly 53, handwheel 531, support part 532, remote control switch 60, remote control signal transmitting module 61, remote control signal receiving module 62. Detailed Implementation

[0035] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0036] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0037] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. Unless otherwise specified, the terms "connection" and "linkage" used in this application include both direct and indirect connections (linkages).

[0038] See Figures 1-13 As shown, the rod provided in this application includes a vertical pole 10, a horizontal arm 22, and a lifting drive device for the horizontal arm. The vertical pole 10 has a guide groove 11 on its outer surface along the height direction. The horizontal arm 22 is connected to the sliding sleeve 21 in the lifting drive device for the horizontal arm. The sliding sleeve 21 is slidably connected to the rod 20 through the sliding guide assembly 23 and the sliding engagement with the guide groove 11.

[0039] In this embodiment, the lifting drive device of the cross arm can drive the sliding sleeve 21 to slide back and forth between the first stroke position and the second stroke position along the height direction of the upright 10. The first stroke position is the highest position in which the sliding sleeve 21 drives the traffic control module connected to the cross arm 21 to slide along the height direction of the upright 10. The second stroke position is the lowest position in which the sliding sleeve 21 drives the traffic control module connected to the cross arm 21 to slide along the height direction of the upright 10. At this lowest position, the operator can operate the traffic control module without having to climb to a height.

[0040] The traffic management module includes traffic lights, traffic monitoring equipment, and traffic signs, which can be used to guide traffic participants to pass in an orderly manner, monitor the traffic behavior of traffic participants, and guide traffic participants.

[0041] Of course, lighting units can also be installed on the cross arm 22 to facilitate the inspection, installation, and replacement of the lighting units.

[0042] The lifting drive device for the cross arm provided in this embodiment includes a sliding mechanism 20 and a sliding drive mechanism 30. The sliding mechanism 20 is slidably connected to the upright 10 along the height direction of the upright 10, and the sliding drive mechanism 30 provides power for the reciprocating motion of the sliding mechanism 20 along the height direction of the upright 10.

[0043] The sliding mechanism 20 includes a sliding sleeve 21 and a sliding guide assembly 23. A cross arm 22 is fixed to the outer wall of the sliding sleeve 21 and is configured to connect to a traffic management module or a lighting unit. Figure 1 and Figure 10 The traffic control module shown only includes the traffic monitoring device 220. Of course, in some embodiments, the lighting unit may also be located at the top of the pole 10, as detailed in subsequent embodiments.

[0044] See Figure 11 As shown, the sliding mechanism 20 also includes a cross arm connector 25, which is disposed on the outer wall of the sliding sleeve 21. The cross arm 22 and the cross arm connector 25 are detachably connected, for example, the cross arm 22 and the cross arm connector 25 are connected by a plug-in connection.

[0045] In some embodiments, a cross arm connector 25 is provided on each of the two opposite outer walls of the sliding sleeve 21, so that two cross arms 22 can be installed under suitable working conditions, and the positions of the two cross arms 22 are opposite to each other, which can balance the force state of the sliding sleeve 21.

[0046] The upright pole 10 is the main supporting structure of this member, and it is set vertically. The sliding sleeve 21 is slidably fitted onto the upright pole 10; in other words, the sliding sleeve 21 can reciprocate vertically along the height of the upright pole 10. Simultaneously, it drives the traffic control module to move synchronously via the cross arm 22, lowering the cross arm 22 to a suitable height for operators to operate the traffic management module. At this height, operators do not need to climb, reducing construction hazards and facilitating operation. The operations performed by the operators on the traffic management module include installation, inspection, and replacement.

[0047] The sliding drive mechanism 30 includes a sliding power source 31 and a sliding transmission assembly 32. The sliding power source 31 is fixed to the upright 10. The sliding power source 31 is connected to the sliding sleeve 21 through the sliding transmission assembly 32. The sliding power source 31 is configured to drive the sliding sleeve 21 to slide back and forth along the height direction of the upright 10 through the sliding transmission assembly 32, so that the sliding sleeve 21 can drive the traffic management module installed on the cross arm 22 to slide back and forth synchronously along the height direction of the upright 10.

[0048] In some embodiments, the sliding power source 31 drives the sliding sleeve 21 via the sliding transmission assembly 32, thereby causing the cross arm 22 on which the traffic control module is mounted to move upward along the height direction of the upright 10 to a first stroke position. This first stroke position allows the traffic control module to be at the height required for operation. Figure 1 The sliding sleeve 21 shown drives the cross arm 22 to move along the height direction of the upright 10 to the first stroke position. The height of the first stroke position relative to the ground can be 2.5m-3.5m, or higher than 3.5m, depending on the actual needs.

[0049] The sliding power source 31 can also drive the sliding sleeve 21 via the sliding transmission assembly 32 to move the cross arm 22, on which the traffic control module is mounted, downward along the height direction of the upright 10 to a second stroke position. This second stroke position allows the traffic control module to be positioned at a height for operation by the operator. Figure 10 The sliding sleeve 21 shown drives the horizontal arm 22 to move along the height direction of the upright 10 to the second stroke position. The height of the second stroke position relative to the ground can be 1m-1.5m or less than 1m, which can be selected according to actual needs.

[0050] The sliding sleeve 21 is slidably connected to the upright 10 by means of a sleeve. On the one hand, it can form a sliding fit connection with the upright 10; on the other hand, the sleeve connection method can restrict the radial degree of freedom of the sliding sleeve 21, making the fit between the sliding sleeve 21 and the upright 10 more stable, and preventing radial swaying during the overall sliding process, thus ensuring the stability of the sliding. In contrast to related technologies, the height adjustment of the crossarm is driven by telescopic means. Compared with related technologies, this application uses a sliding sleeve 21 to slidably connect to the upright 10, which results in a relatively simpler structure.

[0051] To ensure that the horizontal arm 21 can slide stably along the height direction of the vertical pole 10, see... Figure 8 and Figures 11-13 As shown, the outer surface of the upright 10 is provided with a guide groove 11 along its height direction, and the sliding guide assembly 23 is disposed on the inner wall of the sliding sleeve 21 and slides in cooperation with the guide groove 11 so that the sliding sleeve 21 can be slidably fitted onto the upright 10.

[0052] In some embodiments, the outer surface of the upright 10 is provided with four guide grooves 11. Correspondingly, the sealing component 20 is provided with four sliding guide components 23 on the inner wall of the sliding sleeve 21. The four sliding guide components 23 are respectively slidably engaged with the four guide grooves 11 to improve the stability of the sliding engagement between the sliding sleeve 21 and the upright 10.

[0053] In this embodiment, the guide groove 11 is a groove-shaped guide groove, and the sliding guide component 23 slides in conjunction with the guide groove.

[0054] In this embodiment, the sliding guide assembly 23 includes at least one set of guide wheels. In a specific embodiment, two sets of guide wheels can be provided, which are arranged sequentially and spaced apart along the height direction on the inner wall of the sliding sleeve 21. Each guide wheel set includes two first guide wheels 231, one second guide wheel 232, and a mounting frame 233. The mounting frame 233 is fixed to the inner wall of the sliding sleeve 21. The two first guide wheels 231 are rotatably connected to the mounting frame 233 at intervals. The second guide wheel 232 is rotatably mounted on the mounting frame 233 and located between the two first guide wheels 231. The axis of the first guide wheel 231 is perpendicular to the inner wall of the sliding sleeve 21, and the axis of the second guide wheel 232 is parallel to the inner wall of the sliding sleeve 21. The two first guide wheels 231 rotatably contact the side wall of the guide groove, and the second guide wheel 232 rotatably contacts the bottom wall of the guide groove. The two first guide wheels 231 cooperate with the side wall of the guide groove to limit the degree of freedom of the sliding sleeve 21 along the side wall of the guide groove. The second guide wheel 232 cooperates with the bottom wall of the guide groove to limit the degree of freedom of the sliding sleeve 21 along the bottom wall of the guide groove. In turn, the degree of freedom of the sliding sleeve 21 along the radial direction of the upright 10 is limited, which prevents the sliding sleeve 21 from swinging in the radial direction of the upright 10 when sliding, and improves the stability of the sliding sleeve 21.

[0055] In this embodiment, the sliding transmission assembly 32 is disposed in the guide groove 11, see [reference]. Figures 4-6 , Figure 9 and Figure 11 As shown, the sliding transmission assembly 32 includes a driving wheel 321, a driven wheel 322, and a transmission element 323. A mounting cavity 12 is formed inside the upright 10. A sliding power source 31 is mounted in the mounting cavity 12, and its drive shaft 311 extends to the guide groove 11. This sliding power source 31 is a motor. The driving wheel 321 is coaxially connected to the drive shaft 311 of the sliding power source 31. The driven wheel 322 is rotatably mounted in the guide groove 11 and spaced apart from the driving wheel 321. The transmission element 323 is sleeved on the driving wheel 321 and the driven wheel 322, and is fixedly connected to the inner wall of the sliding sleeve 31. The sliding power source 31 outputs motion that drives the driving wheel 321 to rotate forward or backward, so that the sliding sleeve 21 can reciprocate along the height direction of the upright 10 via the transmission element 323.

[0056] The driving wheel 321 and driven wheel 322 can be sprockets or pulleys, and the transmission element 323 can be a chain or belt. The sliding power source 31 outputs a forward rotation motion that drives the driving wheel 321, which in turn drives the sliding sleeve 21 upward along the height direction of the upright 10 via the transmission element 323. Conversely, the sliding power source 31 outputs a reverse rotation motion that drives the driving wheel 321, which in turn drives the sliding sleeve 21 downward along the height direction of the upright 10 via the transmission element 323. It can be understood that by controlling the power output of the sliding power source 31, the sliding sleeve 21 can be controlled to move to either the first or second stroke position. For example, by controlling the working time of the sliding power source 31 based on the transmission ratio between the driving wheel 321 and the driven wheel 322, and the output speed of the sliding power source 31, the displacement of the sliding sleeve 21 along the height direction of the upright 10 can be controlled.

[0057] See Figure 11 As shown, a fixing member 24 is provided on the inner wall of the sliding sleeve 21, which is used to fix and connect with the transmission element 323.

[0058] In this embodiment, after the transmission element 323 is fitted onto the driving wheel 321 and the driven wheel 322, the space between the transmission element 323 can accommodate the sliding guide assembly 23. Therefore, the transmission element 323 occupies a large space, resulting in the width of the transmission element 323 being greater than the distance between the two opposing sidewalls of the guide groove 11. See [link to relevant documentation] for details. Figure 9 , Figure 12 and Figure 13 As shown, the guide groove 11 has a clearance space 111 formed on its sidewall, which is used to avoid the transmission element 323. The clearance space 111 is formed recessed in part of the sidewall of the guide groove 11.

[0059] See Figure 9 As shown, the inner wall of the sliding sleeve 21 is also provided with a foolproof part 211. The foolproof part 211 is aligned with the groove of the guide groove 11 and is configured to perform installation alignment when the sliding sleeve 21 is assembled onto the upright 10. In other words, when the sliding sleeve 21 is fitted onto the upright 10, the foolproof part 211 is limited at the groove of the guide groove 11, which can significantly improve assembly efficiency and avoid assembly errors.

[0060] See Figure 2 and Figure 3 As shown, the sliding drive mechanism 30 also includes a first limiting unit 34 and a second limiting unit 35. The first limiting unit 34 and the second limiting unit 35 are respectively arranged at intervals in the guide groove 11 of the upright 10. Both the first limiting unit 34 and the second limiting unit 35 are electrically connected to the sliding power source 31. The first limiting unit 34 is configured to control the sliding power source 31 to stop working when the sliding sleeve 21 slides upward along the height direction of the upright 10 to the first stroke position. The second limiting unit 35 is configured to control the sliding power source 31 to stop working when the sliding sleeve 21 slides downward along the height direction of the upright 10 to the second stroke position, thereby controlling the displacement of the sliding sleeve 21 sliding along the height direction of the upright 10 to the first stroke position or the second stroke position.

[0061] The first limiting unit 34 and the second limiting unit 35 can be limit switches. The first limiting unit 34 and the second limiting unit 35 can be set to a first limit position or a second limit position. When the sliding sleeve 21 moves to the first limit position or the second limit position, it contacts the limit switch and triggers the switch to send a control signal to control the sliding power source 31 to stop working, thereby realizing the control of the sliding power source 31.

[0062] When the sliding sleeve 21 slides to the first or second stroke position, it is prone to vibration due to the relatively long horizontal arm 22. For further details, please refer to [link to relevant documentation]. Figure 2 and Figure 3 As shown, the sliding drive mechanism 30 also includes a first buffer unit 36 ​​and a second buffer unit 37. The first buffer unit 36 ​​and the second buffer unit 37 are respectively arranged at intervals in the guide groove 11 of the upright 10. The first buffer unit 36 ​​is configured to buffer the sliding sleeve 21 when it slides upward along the height direction of the upright 10 to the first stroke position. The second buffer unit 37 is configured to buffer the sliding sleeve 21 when it slides downward along the height direction of the upright 10 to the second stroke position, so as to reduce or even balance the shaking of the cross arm 22.

[0063] See Figure 1 and Figure 10As shown, the pole provided in this application also includes a lighting unit 40, which is installed on the top of the pole 10. The lighting unit 40 enables the pole to have a lighting function, thereby improving the performance of the product.

[0064] It should be noted that when the sliding sleeve 21 moves along the height direction of the upright 10, the lighting unit 40 does not move with the sliding sleeve 21.

[0065] See Figure 1 , Figure 4 and Figure 10 As shown, the rod provided in this application also includes a movable base 50, which is connected to the bottom of the upright 10 and can be moved by an external force (e.g., manual pushing force) to facilitate placing the rod in a suitable position.

[0066] like Figure 1 As shown, the movable base 50 includes a base 51, multiple casters 52, and multiple positioning components 53. The multiple casters 52 are all mounted on the bottom surface of the base 51, and the multiple positioning components 53 are mounted on the base 51. The upright 10 is mounted on the top surface of the base 51. The casters 52 ensure the movement of the movable base 50, and the positioning components 53 position the upright 10 in place.

[0067] See Figure 4 As shown, the positioning component 53 includes a handwheel 531 and a support part 532. The handwheel 531 is located on the top surface of the base 51 and passes through the base 51 and is threadedly connected to the support part 532. By rotating the handwheel 531, the support part 532 can be adjusted to move downward and then contact the ground to support the base 51, thereby positioning the rod that has been moved to the appropriate position.

[0068] For easier control of the lifting and lowering of this member, please refer to [reference needed]. Figure 13 As shown, the pole provided in this application also includes a remote control switch 60, a remote control signal transmitting module 61, and a remote control signal receiving module 62. The remote control signal receiving module 62 is electrically connected to the sliding power source 31, and the remote control signal transmitting module 61 is electrically connected to the remote control switch 60. The remote control signal transmitting module 61 is configured to transmit an upward or downward signal through the remote control switch 60, and the remote control signal receiving module 62 is configured to control the sliding power source 31 to drive the sliding sleeve 21 to slide upward or downward along the height direction of the pole 10 through the upward or downward signal, thereby realizing remote control of the lifting function.

[0069] In summary, in the lifting drive device and rod of the cross arm provided in this application, the sliding sleeve is slidably sleeved on the upright. The sliding power source drives the sliding sleeve to reciprocate along the height direction of the upright through the sliding transmission assembly, so as to synchronously drive the cross arm to move. The cross arm can be moved to a height suitable for the operator to operate. At this height, the operator does not need to climb to work, reducing the construction danger and facilitating the operator to operate.

[0070] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. A lifting drive device for a lever arm, characterized in that, include: A sliding mechanism includes a sliding sleeve and a sliding guide assembly. The sliding sleeve is slidably fitted onto the upright by slidingly engaging with a guide groove disposed in the height direction of the upright through the sliding guide assembly. The sliding sleeve is configured to connect a cross arm. A sliding drive mechanism includes a sliding power source and a sliding transmission assembly. The sliding power source is configured to be mounted on the upright and connected to the sliding sleeve through the sliding transmission assembly, so as to drive the sliding sleeve to reciprocate between a first stroke position and a second stroke position along the height direction of the upright through the sliding transmission assembly.

2. The lifting drive device for the crossarm as described in claim 1, characterized in that, The sliding guide assembly includes at least one set of guide wheels, each set comprising two first guide wheels, one second guide wheel, and a mounting bracket. The mounting bracket is fixed to the inner wall of the sliding sleeve. The two first guide wheels are rotatably connected to the mounting bracket at intervals, and the axis of each first guide wheel is perpendicular to the inner wall of the sliding sleeve. The second guide wheel is rotatably connected to the mounting bracket and located between the two first guide wheels, and the axis of each first guide wheel is parallel to the inner wall of the sliding sleeve. The two first guide wheels are rotatably in contact with the sidewall of the guide groove, and the second guide wheel is rotatably in contact with the bottom wall of the guide groove. The sliding transmission assembly is disposed in the guide groove.

3. The lifting drive device for the crossarm as described in claim 2, characterized in that, The sliding transmission assembly includes a driving wheel, a driven wheel, and a transmission element. The driving wheel is coaxially connected to the drive shaft of the sliding power source and extends to the guide groove of the upright. The driven wheel is rotatably mounted in the guide groove of the upright and spaced apart from the driving wheel. The transmission element is sleeved on the driving wheel and the driven wheel, and the transmission element is fixedly connected to the inner wall of the sliding sleeve. The sliding power source is used to output motion that drives the driving wheel to rotate forward or in reverse, so as to drive the sliding sleeve to reciprocate between a first stroke position and a second stroke position along the height direction of the upright through the transmission element.

4. The lifting drive device for the crossarm as described in claim 3, characterized in that, The guide groove has a clearance space formed on its sidewall, which is used to avoid the transmission element.

5. The lifting drive device for the crossarm as described in claim 2, characterized in that, The inner wall of the sliding sleeve is also provided with a foolproof part, which is aligned with the groove of the guide groove; the foolproof part is configured to perform installation alignment when the sliding sleeve is assembled onto the upright.

6. The lifting drive device for the crossarm as described in claim 1, characterized in that, The sliding drive mechanism further includes a first limiting unit and a second limiting unit respectively spaced apart on the upright. Both the first limiting unit and the second limiting unit are electrically connected to the sliding power source. The first limiting unit is configured to control the sliding power source to stop working when the sliding sleeve slides upward along the height direction of the upright to a first stroke position. The second limiting unit is configured to control the sliding power source to stop working when the sliding sleeve slides downward along the height direction of the upright to a second stroke position.

7. The lifting drive device for the crossarm as described in claim 1, characterized in that, The sliding drive mechanism further includes a first buffer unit and a second buffer unit respectively spaced apart on the upright. The first buffer unit is configured to buffer the sliding sleeve when it slides upward along the height direction of the upright to a first stroke position, and the second buffer unit is configured to buffer the sliding sleeve when it slides downward along the height direction of the upright to a second stroke position.

8. The lifting drive device for the crossarm as described in claim 1, characterized in that, It also includes a lighting unit configured to be mounted on the top of the pole.

9. The lifting drive device for the crossarm as described in claim 1, characterized in that, It also includes a movable base configured to be attached to the bottom of the upright.

10. A rod, characterized in that, The lifting drive device includes the lever arm as described in any one of claims 1-9; and further includes: A pole, wherein the pole has a guide groove along the height direction on its outer surface; A horizontal arm, which is connected to the sliding sleeve.

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