Guide machine cantilever mechanism and guide machine

By using conductive slip rings and carbon brushes for electrical connection, the problem of the guide arm's inability to rotate 360° was solved, enabling omnidirectional circuit conduction of the load equipment and improving the equipment's rotation range and reliability.

CN224033470UActive Publication Date: 2026-03-24HEBEI HUIJIN ELECTROMECHANICAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-27
Publication Date
2026-03-24

AI Technical Summary

Technical Problem

The existing guide car boom cannot rotate 360°, which limits its use in situations requiring all-around monitoring or operation.

Method used

The rotating arm and the power base are electrically connected by a conductive slip ring and a carbon brush. The conductive plug of the load device is inserted into the interface and electrically connected to the carbon brush, so as to realize the circuit conduction of the load device.

Benefits of technology

The rotating arm can drive the load equipment to rotate 360°, avoiding wire damage due to stress, ensuring stable current transmission, expanding the application scenarios and improving the reliability and flexibility of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a directional machine cantilever mechanism and a directional machine, which belong to the technical field of directional machines and comprise a power seat, a rotating arm, a conductive slip ring and a carbon brush. According to the cantilever mechanism of the direction machine provided by the utility model, the rotating arm is rotatably arranged on the power seat, the conductive slip ring is sleeved and fixed on the power seat, one side of the rotating arm is provided with the interface, the carbon brush is fixedly arranged in the interface, and the carbon brush is in sliding fit with the conductive slip ring; and the conductive plug is electrically connected with the carbon brush, so that circuit conduction of the load equipment is realized. The rotating arm is electrically connected with the power seat through the conductive slip ring and the carbon brush, so that the rotating arm can drive the load equipment to rotate by 360 degrees without being influenced by a wire.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of road guide machine, more specifically, relate to a road guide machine cantilever mechanism and adopt the road guide machine cantilever mechanism of road guide machine. BACKGROUND

[0002] With the acceleration of urbanization, the city road and building are increasingly complex, and people are easy to lose direction in the unfamiliar environment. Although the existing road guide equipment such as map, navigation software can provide certain help, there is still inconvenience in some cases (such as poor network signal, internal map not open, etc.). Therefore, it has important practical significance to develop an intelligent road guide machine that can provide real-time and accurate route guidance.

[0003] The existing road guide machine includes a support, a cantilever and a load device. The bottom of the support is provided with a power supply device, the cantilever is installed on the support, and the load device is installed on the cantilever. The load device includes an intelligent guide light board, a monitor, a lighting device, etc. The power supply device and the load device are connected by wires. When the rotation angle of the cantilever is too large, the wires are easy to be damaged due to stress. Therefore, the cantilever can only rotate within a limited range, and cannot realize 360° rotation. Therefore, there is a certain limitation in occasions requiring omnidirectional monitoring or operation. SUMMARY

[0004] The utility model aims at providing a road guide machine cantilever mechanism, which aims to solve the problem that the cantilever of the existing road guide machine cannot rotate 360°.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of providing a road guide machine cantilever mechanism, which comprises:

[0006] A power seat is fixedly installed on the support.

[0007] A rotating arm is sleeved on the power seat and rotationally connected with the power seat. One side of the rotating arm is provided with an interface matched with the conductive plug of the load device.

[0008] A conductive slip ring is sleeved and fixed on the power seat, and the conductive slip ring is coaxially arranged with the rotating arm.

[0009] A carbon brush is fixedly installed in the interface and slidingly matched with the conductive slip ring. The carbon brush is used for electrically connecting with the conductive plug of the load device.

[0010] In a possible implementation manner, a support seat is detachably installed in the interface, and the carbon brush is fixedly installed on the support seat.

[0011] In a possible implementation, a pressing plate is installed on the support base, and a conductive sheet is installed on the pressing plate, with the inner side of the conductive sheet in contact with the carbon brush and the outer side of the conductive sheet used to contact the conductive part of the conductive socket of the load device.

[0012] In a possible implementation, a socket is formed on the support base and matched with the carbon brush.

[0013] In a possible implementation, the carbon brush is in sliding fit with the socket, and a compression spring is installed between the carbon brush and the conductive sheet.

[0014] In a possible implementation, an accommodating cavity is arranged inside the power base, a driving motor is fixedly installed in the accommodating cavity, an output shaft of the driving motor extends upward to the outside of the accommodating cavity, a driving gear is fixedly installed on the output shaft, a transmission gear meshing with the driving gear is installed on the top of the power base, and a gear ring meshing with the transmission gear is installed on the rotating arm.

[0015] In a possible implementation, a top cover is installed on the top of the rotating arm.

[0016] In a possible implementation, an annular cavity for avoiding the conductive slip ring is formed on the inner circumferential surface of the rotating arm, and an end cover is installed at the opening of the lower end of the annular cavity.

[0017] In a possible implementation, a threading hole is formed on the side wall of the power base, and the threading hole is used to communicate the accommodating cavity and the annular cavity.

[0018] Compared with the prior art, the scheme shown in the embodiment of the application, the cantilever mechanism of the road pointing machine, the rotating arm is rotatably installed on the power base, the conductive slip ring is sleeved and fixed on the power base, one side of the rotating arm is provided with an interface, the carbon brush is fixedly installed in the interface, the carbon brush is in sliding fit with the conductive slip ring, and the conductive plug of the load device is inserted into the interface, the conductive plug is electrically connected with the carbon brush, so that the circuit of the load device is turned on. Since the electric connection mode of the conductive slip ring and the carbon brush is adopted between the rotating arm and the power base, the rotating arm can drive the load device to rotate by 360 degrees, and the load device is not affected by the wire.

[0019] Another purpose of the utility model is to provide a road pointing machine, the road pointing machine comprises the cantilever mechanism of the road pointing machine of any one of the above.

[0020] Compared with the prior art, the scheme shown in the embodiment of the application has the following beneficial effects: the road guiding machine cantilever mechanism of the road guiding machine adopts a rotating arm rotatingly installed on a power seat, a conductive slip ring is fixedly sleeved on the power seat, an interface is arranged on one side of the rotating arm, a carbon brush is fixedly installed in the interface, the carbon brush is in sliding fit with the conductive slip ring, and after a conductive plug of a load device is inserted into the interface, the conductive plug is electrically connected with the carbon brush, so that the circuit of the load device is turned on. Since the electric connection mode of the conductive slip ring and the carbon brush is adopted between the rotating arm and the power seat, the rotating arm can drive the load device to rotate by 360 degrees, and the load device is not affected by the wire. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0022] Figure 1 A sectional view of the road guiding machine cantilever mechanism provided in the embodiment of the present application is shown in the figure.

[0023] Figure 2 A top view of the road guiding machine cantilever mechanism (with the top cover hidden) provided in the embodiment of the present application is shown in the figure.

[0024] Figure 3 A sectional view of the carbon brush provided in the embodiment of the present application is shown in the figure.

[0025] Figure 4 A sectional view of the pressing plate provided in the embodiment of the present application is shown in the figure.

[0026] Figure 5 A sectional view of the support seat provided in the embodiment of the present application is shown in the figure.

[0027] Figure 6 A three-dimensional view of the power seat provided in the embodiment of the present application is shown in the figure. Figure 1 ;

[0028] Figure 7 A three-dimensional view of the power seat provided in the embodiment of the present application is shown in the figure. Figure 2 .

[0029] In the figure: 1, power seat; 101, containing cavity; 102, driving motor; 103, driving gear; 104, transmission gear; 105, threading hole; 106, large diameter pipe; 107, small diameter pipe; 108, anti-rotation boss; 109, anti-rotation groove; 2, rotating arm; 201, interface; 202, support seat; 203, pressing plate; 204, conductive sheet; 205, bolt; 206, slot; 207, flexible support sleeve; 208, jack; 209, top cover; 210, annular cavity; 211, end cover; 212, gear ring; 213, compression spring; 3, conductive slip ring; 4, carbon brush; 5, limit switch. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical schemes and beneficial effects to be solved by the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and do not limit the utility model.

[0031] Please refer to Figure 1 A road indicating machine cantilever mechanism provided by the utility model will be described. The road indicating machine cantilever mechanism comprises a power seat 1, a rotating arm 2, a conductive slip ring 3 and a carbon brush 4. The power seat 1 is fixedly installed on a support; the rotating arm 2 is sleeved on the power seat 1 and is rotationally connected with the power seat 1, and one side of the rotating arm 2 is provided with an interface 201 matched with a conductive plug of a load device; the conductive slip ring 3 is fixedly sleeved on the power seat 1, and the conductive slip ring 3 is coaxially arranged with the rotating arm 2; and the carbon brush 4 is fixedly installed in the interface 201 and is in sliding cooperation with the conductive slip ring 3, and the carbon brush 4 is used for electrically connecting with the conductive plug of the load device.

[0032] Through the above structural design, when the power seat 1 is fixed and the rotating arm 2 rotates under the driving of external power, the conductive slip ring 3 rotates synchronously, and the carbon brush 4 keeps sliding cooperation with the conductive slip ring 3 in the interface 201. In this way, no matter how the rotating arm 2 rotates, the carbon brush 4 can always keep good electrical connection with the conductive plug of the load device, thereby ensuring stable transmission of current and providing continuous power and electrical energy support for the load device.

[0033] Compared with the prior art, the rotating arm 2 is rotatably installed on the power seat 1, the power seat 1 is sleeved and fixed with the conductive slip ring 3, one side of the rotating arm 2 is provided with the interface 201, the inside of the interface 201 is fixedly installed with the carbon brush 4, the carbon brush 4 is in sliding fit with the conductive slip ring 3, and after the conductive plug of the load equipment is inserted into the interface 201, the conductive plug is electrically connected with the carbon brush 4, so that the circuit of the load equipment is turned on. Since the conductive slip ring 3 and the carbon brush 4 are used for electrically connecting the rotating arm 2 and the power seat 1, the rotating arm 2 can drive the load equipment to rotate by 360 degrees, and is not affected by the wire.

[0034] In some embodiments, referring to Figure 6 and Figure 7 , one end of the power seat 1 in the length direction is provided with the large-diameter pipe 106, the other end of the power seat 1 in the length direction is provided with the small-diameter pipe 107, the outer diameter of the small-diameter pipe 107 is the same as the inner diameter of the large-diameter pipe 106, so the small-diameter pipe 107 of the power seat 1 can be inserted into the large-diameter pipe 106 of another power seat 1, thereby realizing the series connection of multiple road guide machine cantilever mechanisms. Since the rotating arms 2 on each power seat 1 are independent of each other, the load equipment on each rotating arm 2 can independently operate, thereby expanding the use scene. The inner wall of the large-diameter pipe 106 is provided with an anti-rotation boss 108, and the outer wall of the small-diameter pipe 107 is provided with an anti-rotation groove 109 matched with the anti-rotation boss 108. When the small-diameter pipe 107 is inserted into the large-diameter pipe 106, the anti-rotation boss 108 is inserted into the anti-rotation groove 109, thereby preventing the relative rotation of the two power seats 1, and improving the torsional strength and bending strength.

[0035] In some embodiments, referring to Figure 1 and Figure 3 , the support seat 202 is detachably installed in the interface 201, and the carbon brush 4 is fixedly installed on the support seat 202. In the embodiment, the support seat 202 is made of insulating material, and the support seat 202 is fixed on the inner wall of the interface 201 by screws. Since the carbon brush 4 is fixedly installed on the support seat 202, the dismounting operation of the carbon brush 4 is facilitated.

[0036] Meanwhile, the support seat 202 made of insulating material can effectively avoid affecting the internal circuit and other components of the interface 201 due to the conduction of the support seat 202, thereby ensuring the operation safety of the entire system. Moreover, the support seat 202 is fixed by screws, which not only ensures the stability of the installation of the support seat 202, but also enables the operation of the support seat 202 and the carbon brush 4 to be conveniently realized by dismounting the screws when the carbon brush 4 needs to be repaired or replaced, thereby greatly improving the efficiency and convenience of maintenance, and providing a reliable guarantee for the stable operation of the equipment.

[0037] In some embodiments, referring to Figure 1 , Figure 3and Figure 4 The support base 202 is provided with a pressing plate 203, and the pressing plate 203 is provided with a conductive sheet 204. The inner side of the conductive sheet 204 is electrically connected with the carbon brush 4, and the outer side of the conductive sheet 204 is used for electrically connecting with the conductive part of the conductive socket of the load device. In the embodiment, the pressing plate 203 is fixed on the support base 202 through a bolt 205, and the conductive sheet 204 is fixedly installed on the pressing plate 203. The center of the pressing plate 203 is provided with a through hole for installing the conductive sheet 204, and the opposite two side walls of the through hole are provided with a slot 206 matched with the conductive sheet 204. Since the conductive sheet 204 is made of copper-based material, it has a certain elasticity. During the assembly of the conductive sheet 204, the conductive sheet 204 is first bent to facilitate the insertion of the two ends of the conductive sheet 204 into the slot 206. The inner surface of the conductive sheet 204 is connected with the carbon brush 4 through a wire, and the outer surface of the conductive sheet 204 is in contact with the conductive part of the conductive socket of the load device, so as to realize the conduction of the circuit of the load device. The bolt 205 is provided with a flexible support sleeve 207, and the flexible support sleeve 207 is located between the pressing plate 203 and the support base 202. By adjusting the tightness of the bolt 205, the force between the conductive sheet 204 and the carbon brush 4 can be changed.

[0038] When it is necessary to adjust the conduction state of the circuit of the load device, the tightness of the bolt 205 can be adjusted by rotating the bolt 205. With the tightening of the bolt 205, the flexible support sleeve 207 will be subjected to a certain pressure, and then an upward supporting force will be generated on the pressing plate 203, so that the pressing plate 203 is tightly pressed on the conductive sheet 204, thereby increasing the force between the conductive sheet 204 and the carbon brush 4 and ensuring the stability of the conduction of the circuit. Conversely, when the bolt 205 is loosened, the supporting force of the flexible support sleeve 207 decreases, the pressure of the pressing plate 203 on the conductive sheet 204 also decreases, and the force between the conductive sheet 204 and the carbon brush 4 becomes smaller, so that the conduction state of the circuit can be finely adjusted. Such a design can not only ensure the normal conduction of the circuit, but also facilitate flexible adjustment according to actual needs, thereby improving the reliability and adaptability of the whole system.

[0039] In some embodiments, referring to Figure 1 , Figure 3 and Figure 5 , the support base 202 is provided with a socket 208 matched with the carbon brush 4. In the embodiment, the carbon brush 4 is a rectangular piece, and the socket 208 is a rectangular through hole matched with the outer contour of the carbon brush 4. The carbon brush 4 and the socket 208 are in clearance fit, and the socket 208 plays a positioning role on the carbon brush 4, so that the carbon brush 4 can be prevented from shaking.

[0040] In some embodiments, referring to Figure 3The carbon brush 4 is in sliding fit with the jack 208, and a compression spring 213 is arranged between the carbon brush 4 and the conductive sheet 204. In the embodiment, the carbon brush 4 will be abraded during operation, and the compression spring 213 exerts a force on the carbon brush 4 towards the side of the conductive slip ring 3, so that the carbon brush 4 can be kept in good contact with the conductive slip ring 3. The length of the wire connected between the carbon brush 4 and the conductive sheet 204 is greater than the length of the compression spring 213, so that the wire will not be broken when the carbon brush 4 is displaced. In some embodiments, please refer to Figure 1 and Figure 2 The power base 1 is internally provided with a receiving cavity 101, and a driving motor 102 is fixedly arranged in the receiving cavity 101. The output shaft of the driving motor 102 extends upwards to the outside of the receiving cavity 101, and a driving gear 103 is fixedly arranged on the output shaft. A transmission gear 104 is arranged on the top of the power base 1 and engaged with the driving gear 103. A gear ring 212 is arranged on the rotating arm 2 and engaged with the transmission gear 104. In the embodiment, the power base 1 is in cylindrical shape, and the receiving cavity 101 penetrates the power base 1 from top to bottom. The driving motor 102 is arranged in the receiving cavity 101, and the output shaft of the driving motor 102 is coaxially arranged with the power base 1. The output shaft extends upwards to the outside of the receiving cavity 101. The driving gear 103 is arranged on the output shaft of the driving motor 102, the transmission gear 104 is arranged on the top of the power base 1, and the gear ring 212 is arranged on the rotating arm 2. The transmission gear 104 is engaged with the driving gear 103 and the gear ring 212, so that the rotating arm 2 can be driven to rotate by the driving motor 102, thereby facilitating the adjustment of the position of the load device on the rotating arm 2.

[0041] In actual application, when the position of the load device on the rotating arm 2 needs to be adjusted, the driving motor 102 is started, and the output shaft of the driving motor 102 starts to rotate. Since the driving gear 103 is fixedly arranged on the output shaft, the driving gear 103 also rotates. Since the transmission gear 104 is engaged with the driving gear 103, the transmission gear 104 also starts to rotate. Since the gear ring 212 is arranged on the rotating arm 2 and engaged with the transmission gear 104, the rotation of the transmission gear 104 drives the gear ring 212 to rotate, thereby driving the rotating arm 2 to rotate. In this way, the rotation angle and speed of the rotating arm 2 can be accurately controlled, thereby facilitating the adjustment of the position of the load device on the rotating arm 2.

[0042] In some embodiments, please refer to Figure 1 A top cover 209 is arranged on the top of the rotating arm 2. In the embodiment, the top of the rotating arm 2 is in open structure, and the gear ring 212, the transmission gear 104 and the driving gear 103 are arranged inside the open structure. The top cover 209 is used to seal the opening on the top of the rotating arm 2, thereby protecting the gear ring 212, the transmission gear 104 and the driving gear 103 from being exposed.

[0043] The top cover 209 is connected to the top opening of the rotating arm 2 in a relatively tight manner, and is fixed by bolts 205 or welding, etc. to ensure that it will not loosen and fall off during operation of the device due to vibration or other factors. At the same time, some sealing members, such as rubber sealing rings, etc. can also be provided on the top cover 209 to further enhance the protection performance of the internal components, prevent dust, impurities, etc. from entering the working area of the gear ring 212, the transmission gear 104 and the drive gear 103, thereby ensuring the normal operation and service life of these components. In some special environments, such as high temperature, humid or dusty places, the protective effect of the top cover 209 is particularly important, which can effectively isolate the adverse effects of the external environment on the internal components, and provide reliable protection for the stable operation of the device.

[0044] In some embodiments, referring to Figure 1 , an annular cavity 210 for avoiding the conductive slip ring 3 is provided on the inner circumferential surface of the rotating arm 2, and an end cover 211 is installed at the lower end opening of the annular cavity 210. In this embodiment, the annular cavity 210 is provided on the inner wall of the rotating arm 2. The conductive slip ring 3 is located in the annular cavity 210. One end of the carbon brush 4 extends into the annular cavity 210. The lower end of the annular cavity 210 is an open structure, and the conductive slip ring 3 can be disassembled and operated from the bottom of the rotating arm 2. The end cover 211 is fixed to the bottom of the annular cavity 210 by fasteners, thereby sealing the lower end opening of the annular cavity 210, thereby preventing foreign matter from entering the annular cavity 210, and protecting the conductive slip ring 3 and the carbon brush 4.

[0045] In actual application, this structure design has many advantages. When the rotating arm 2 rotates at high speed, due to the sealing effect of the end cover 211, dust, water vapor and other foreign matter can be effectively prevented from entering the annular cavity 210 along the inner circumferential surface of the rotating arm 2, greatly reducing the probability of failure of the conductive slip ring 3 and the carbon brush 4 due to the influence of foreign matter. Moreover, the end cover 211 is fixed to the bottom of the annular cavity 210 by fasteners, which not only ensures the reliability of the sealing, but also facilitates the quick and convenient disassembly of the end cover 211 when the conductive slip ring 3 needs to be maintained or replaced. At the same time, the annular cavity 210 is provided on the inner wall of the rotating arm 2, which reasonably utilizes the space, makes the structure of the entire rotating arm 2 more compact, and does not affect the other functions and performance of the rotating arm 2. This design concept has been widely applied in many high-precision and high-reliability rotating devices, providing a solid guarantee for the stable operation of the device.

[0046] In some embodiments, referring to Figure 1The side wall of the power base 1 is provided with a threading hole 105 for connecting the accommodating cavity 101 and the annular cavity 210. In the embodiment, the conductive slip ring 3 is electrically connected with the power supply device through a wire. The wire can enter the accommodating cavity 101 through the threading hole 105 and then be connected with the power supply device below the power base 1. Since the wire is completely located inside the power base 1 and the rotating arm 2, the appearance is improved and the wire is prevented from being damaged.

[0047] In some embodiments, referring to Figure 1 The outer side wall of the power base 1 is fixedly provided with a limit switch 5, which is a position sensor. After the device is powered off and then powered on, the zero reset operation can be realized.

[0048] The utility model also provides a road sign machine, including any one above-mentioned road sign machine cantilever mechanism. Compared with prior art, the rotating arm 2 is rotatably installed on the power base 1, the power base 1 is sleeved and fixed with the conductive slip ring 3, one side of the rotating arm 2 is provided with the interface 201, the inside fixed mounting of the interface 201 has the carbon brush 4, the carbon brush 4 and the conductive slip ring 3 slide fit, after the conductive plug of load device is inserted into the interface 201, the conductive plug will be electrically connected with the carbon brush 4, thereby realizing the circuit conduction of load device. Since the conductive slip ring 3 and the carbon brush 4 are used as the electrical connection mode between the rotating arm 2 and the power base 1, the rotating arm 2 can drive the load device to rotate 360 DEG, and is not affected by the wire.

[0049] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model, and any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A sign arm suspension mechanism, comprising: The utility model relates to a power seat fixedly installed on a support, a rotating arm sleeved on the power seat and rotationally connected with the power seat, one side of the rotating arm being provided with an interface matched with a conductive plug of a load device, a conductive slip ring sleeved and fixed on the power seat, the conductive slip ring being coaxially arranged with the rotating arm, and a carbon brush fixedly installed in the interface and slidingly matched with the conductive slip ring, the carbon brush being used for electrically connecting with the conductive plug of the load device. A support seat is detachably installed in the interface, and the carbon brush is fixedly installed on the support seat. A pressing plate is installed on the support seat, a conductive sheet is installed on the pressing plate, an inner side of the conductive sheet is electrically connected with the carbon brush, and an outer side of the conductive sheet is used for electrically connecting with a conductive part of a conductive socket of the load device. An insertion hole matched with the carbon brush is formed in the support seat. The carbon brush is slidingly matched with the insertion hole, and a compression spring is installed between the carbon brush and the conductive sheet.

2. A sign arm suspension mechanism as claimed in claim 1, wherein, An accommodating cavity is formed in the power seat, a drive motor is fixedly installed in the accommodating cavity, an output shaft of the drive motor extends upward to an outside of the accommodating cavity, a drive gear is fixedly installed on the output shaft, a transmission gear meshed with the drive gear is installed on a top of the power seat, and a gear ring meshed with the transmission gear is installed on the rotating arm.

3. A sign arm suspension mechanism as claimed in claim 2, wherein, A top cover is installed on a top of the rotating arm.

4. A finger guide machine jib mechanism as claimed in claim 3, wherein, An annular cavity for avoiding the conductive slip ring is formed in an inner circumferential surface of the rotating arm, and an end cover is installed at an opening of a lower end of the annular cavity.

5. A sign arm suspension mechanism as claimed in claim 4, wherein, A threading hole is formed in a side wall of the power seat, and the threading hole is used for communicating the accommodating cavity and the annular cavity.

6. A finger guide machine jib mechanism as claimed in claim 1 wherein, The utility model relates to a power seat fixedly installed on a support, a rotating arm sleeved on the power seat and rotationally connected with the power seat, one side of the rotating arm being provided with an interface matched with a conductive plug of a load device, a conductive slip ring sleeved and fixed on the power seat, the conductive slip ring being coaxially arranged with the rotating arm, and a carbon brush fixedly installed in the interface and slidingly matched with the conductive slip ring, the carbon brush being used for electrically connecting with the conductive plug of the load device.

7. A finger guide machine jib mechanism as claimed in claim 6, wherein, ​ 8. A finger guide machine jib mechanism as claimed in claim 7, wherein, ​ 9. A finger guide machine jib mechanism as claimed in claim 8, wherein, ​ 10. A signpost machine characterized by ​