Anti-collision device for telescopic arm of window-cleaning machine

Abstract

Disclosed in the present invention is an anti-collision device for a telescopic arm of a window-cleaning machine. The anti-collision device comprises a base arm and a telescopic arm, wherein the telescopic arm is connected to the base arm; the telescopic arm comprises a first telescopic arm, a second telescopic arm and a third telescopic arm; a rope winding device is provided on the front side of the base arm; a base arm guide bracket is provided at the front side end of the base arm; a first guide bracket is provided at the front side end of the first telescopic arm; a second guide bracket is provided at the front side end of the second telescopic arm; a pulley yoke is provided at the top end of the third telescopic arm; a pulley and a tension sensor are provided on the pulley yoke; a steel wire rope is wound around the rope winding device; and the front end of the steel wire rope sequentially passes through the base arm guide bracket, the first guide bracket and the second guide bracket, bypasses the pulley, and is then connected to the tension sensor.

Description

A telescopic arm anti-collision device of window cleaning machine TECHNICAL FIELD

[0001] The present application relates to a kind of window cleaning machine components, specifically a telescopic arm anti-collision device of window cleaning machine. BACKGROUND

[0002] The existing window cleaning machine includes rack, rotary support arranged on the rack, large arm arranged on the rotary support, the large arm includes base arm and telescopic arm, the telescopic arm is sleeved in the base arm.When the window cleaning machine works, the telescopic arm of window cleaning machine needs to rotate left and right to meet the operation needs of operator.The telescopic arm of existing window cleaning machine collides with building during left and right rotation, cannot stop rotating and effectively reverse in time, not only affects the normal work of window cleaning machine, but also may damage the building.

[0003] SUMMARY

[0004] The present application provides a kind of telescopic arm anti-collision device of window cleaning machine.

[0005] The purpose of the present application is to solve the problems that the telescopic arm of existing window cleaning machine cannot stop and effectively reverse in time when it collides with building, affects the normal work of window cleaning machine and may damage the building.

[0006] The technical scheme adopted by the present application to solve the technical problem is: a telescopic arm anti-collision device of window cleaning machine, including base arm and telescopic arm, the telescopic arm is connected with the base arm;The telescopic arm includes first telescopic arm, second telescopic arm and third telescopic arm;The front side of the base arm is provided with a rope collecting device, the front end of the base arm is provided with a base arm guide bracket, the front end of the first telescopic arm is provided with a first guide bracket, and the front end of the second telescopic arm is provided with a second guide bracket;The top end of the third telescopic arm is provided with a pulley bracket, and a pulley and a tension sensor are arranged on the pulley bracket;The pulley bracket, the base arm guide bracket, the first guide bracket and the second guide bracket are arranged in sequence in a straight line;A steel wire rope is wound around the rope collecting device, the front end of the steel wire rope passes through the base arm guide bracket, the first guide bracket and the second guide bracket in sequence, and is connected with the tension sensor after passing through the pulley.

[0007] Preferably, a mechanical limiting device is arranged on the pulley bracket, the mechanical limiting device includes spring, spring rod and limit switch, and the two ends of the spring rod are provided with lower end piece and upper end piece;First limit piece and second limit piece are arranged on the pulley bracket, first limit hole and second limit hole are respectively arranged on the first limit piece and the second limit piece, and the spring rod is sleeved in the first limit hole and the second limit hole;The spring is sleeved on the spring rod, and one end of the spring is tightly pressed on the lower end piece of the spring rod, and the other end is tightly pressed on the bottom of the first limit piece;The upper end piece of the spring rod is connected with the tension sensor, and the spring is connected with the limit switch.

[0008] Preferably, the rope collecting device comprises a winding drum, a speed reducer and a rope collecting frame, the winding drum is connected with the speed reducer, the steel wire rope is wound on the winding drum, and the rope collecting frame is installed on the base arm.

[0009] Preferably, the base arm guide support comprises a base arm guide pipe and a base arm telescopic rod, the base arm guide pipe is installed on the front side of the base arm, the base arm telescopic rod is sleeved into the base arm guide pipe, the end of the base arm telescopic rod is provided with a base arm rope hole, and the steel wire rope is passed through the base arm rope hole; the first guide support and the second guide support are the same in structure as the base arm guide support; the first guide support comprises a first guide pipe and a first telescopic rod, the first guide pipe is installed on the front side of the first telescopic arm, the first telescopic rod is sleeved into the first guide pipe, and the end of the first telescopic rod is provided with a first rope hole, and the steel wire rope is passed through the first rope hole; the second guide support comprises a second guide pipe and a second telescopic rod, the second guide pipe is installed on the front side of the second telescopic arm, the second telescopic rod is sleeved into the second guide pipe, and the end of the second telescopic rod is provided with a second rope hole, and the steel wire rope is passed through the first rope hole; the base arm rope hole, the first rope hole, the second rope hole and the third rope hole and the pulley are located on the same horizontal line, and the front end of the steel wire rope is connected with the tension sensor after passing through the base arm rope hole, the first rope hole, the second rope hole and the third rope hole and the pulley in sequence.

[0010] Preferably, an electrical box is arranged on the base arm, a control module is arranged in the electrical box, and the control module is electrically connected with the tension sensor and the limit switch; the control module receives and processes the tension sensor signal and the limit switch signal, and transmits a control signal, and the control signal is used for controlling the rotation of the slewing bearing of the window cleaning machine and controlling the winding and unwinding of the rope collecting device.

[0011] The application has the advantages that the application prevents the telescopic arm from colliding with the building during rotation, and realizes the effect of long-distance anti-collision; when the telescopic arm encounters the building during rotation, the tension sensor and / or the limit switch can timely receive the steel wire rope tension change signal, the control module can timely stop the slewing action of the current telescopic arm and slewing in the opposite direction according to the tension change signal, the normal work of the window cleaning machine is better ensured, the work efficiency is improved, and the telescopic arm is timely stopped when encountering the building, so that the damage to the building is effectively prevented. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 is a structural schematic view of the application.

[0013] Fig. 2 is a partial enlarged schematic view of Fig. 1.

[0014] Fig. 3 is a structural schematic view of a mechanical limiting device.

[0015] Figure 4 is a schematic diagram of the rope collecting device.

[0016] Figure 5 is a schematic diagram of the base arm guiding support. DETAILED DESCRIPTION

[0017] The application will be further described below in conjunction with the drawings and examples.

[0018] As shown in the drawings, the window cleaning machine telescopic arm anti-collision device comprises a base arm 1 and a telescopic arm, and the telescopic arm is connected with the base arm 1. The telescopic arm comprises a first telescopic arm 2, a second telescopic arm 3 and a third telescopic arm 4. The front side of the base arm 1 is provided with a rope collecting device 12. The front end of the base arm 1 is provided with a base arm guiding support 10. The front end of the first telescopic arm 2 is provided with a first guiding support 9. The front end of the second telescopic arm 3 is provided with a second guiding support 8. The top end of the third telescopic arm 4 is provided with a pulley frame 7. The pulley frame 7 is provided with a pulley 19 and a tension sensor 6. The pulley frame 7, the base arm guiding support 10, the first guiding support 9 and the second guiding support 8 are arranged in a straight line in sequence. The rope collecting device 12 is wound with a steel wire rope 11. The front end of the steel wire rope 11 passes through the base arm guiding support 10, the first guiding support 9 and the second guiding support 8 in sequence, and is connected with the tension sensor 6 after passing through the pulley 19.

[0019] The pulley frame 7 is provided with a mechanical limiting device. The mechanical limiting device comprises a spring 5, a spring rod 17 and a limiting switch (not shown in the drawing). The spring rod 17 is provided with a lower end piece 16 and an upper end piece 14 at two ends. The pulley frame 7 is provided with a first limiting piece 18 and a second limiting piece 15. The first limiting piece 18 and the second limiting piece 15 are respectively provided with a first limiting hole and a second limiting hole. The spring rod 17 is sleeved in the first limiting hole and the second limiting hole. The spring 5 is sleeved on the spring rod 17, and one end of the spring 5 is tightly pressed against the lower end piece 16 of the spring rod, and the other end of the spring 5 is tightly pressed against the bottom of the first limiting piece 18. The upper end piece 14 of the spring rod 17 is connected with the tension sensor 6. The spring 15 is connected with the limiting switch.

[0020] The rope collecting device 12 comprises a winding drum 21, a speed reducer 22 and a rope collecting frame 20. The winding drum 21 is connected with the speed reducer 22. The steel wire rope 11 is wound on the winding drum 21. The rope collecting frame 20 is installed on the base arm 1.

[0021] The base arm guiding support 10 comprises a base arm guiding tube 25 and a base arm telescopic rod 23, the base arm guiding tube 25 is installed on the front side of the base arm 1, the base arm telescopic rod 23 is sleeved into the base arm guiding tube 25, the base arm telescopic rod 23 can be telescoped forward and backward in the base arm guiding tube 25, the base arm telescopic rod 23 is provided with a base arm rope hole 24 at the end, the steel wire rope 11 is sleeved into the base arm rope hole 24. The first guiding support and the second guiding support have the same structure as the base arm guiding support 10; the first guiding support comprises a first guiding tube and a first telescopic rod, the first guiding tube is installed on the front side of the first telescopic arm 2, the first telescopic rod is sleeved into the first guiding tube, the first telescopic rod can be telescoped forward and backward in the first guiding tube, the first telescopic rod is provided with a first rope hole at the end, the steel wire rope 11 is sleeved into the first rope hole. The second guiding support comprises a second guiding tube and a second telescopic rod, the second guiding tube is installed on the front side of the second telescopic arm 4, the second telescopic rod is sleeved into the second guiding tube, the second telescopic rod can be telescoped forward and backward in the second guiding tube, the second telescopic rod is provided with a second rope hole at the end, the first rope hole is sleeved into the first rope hole. The base arm rope hole 24, the first rope hole, the second rope hole and the third rope hole and the pulley 19 are located on the same horizontal line, the front end of the steel wire rope 11 is connected with the tension sensor 6 after passing through the base arm rope hole 24, the first rope hole, the second rope hole and the third rope hole and the pulley 19 in turn.

[0022] The base arm 1 is provided with an electrical box 13, the electrical box 13 is provided with a control module. The control module is electrically connected with the tension sensor 6 or / and the limit switch; the function of the control module is to receive and process the signal of the tension sensor 5 or / and the signal of the limit switch, and transmit a control signal, the control signal is used for controlling the operation of the slewing bearing of the window cleaning machine, so that the base arm 1 connected with the slewing bearing rotates, the control signal is also used for controlling the winding and unwinding of the rope winding device 12.

[0023] The working principle of the present application is: when the telescopic arm extends outward, the rope collecting device 12 synchronously releases the rope outward, after the telescopic arm extends, the rope collecting device 12 starts to collect the rope, the force is measured by the tension sensor 6 and transmitted to the control module, after reaching the rated pre-tightening force, the control module sends a signal to stop the rope collecting device 12 from collecting the rope and lock it. When the telescopic arm starts to rotate, if a collision with the building occurs, at least one of the base arm telescopic rod 23, the first telescopic rod and the first telescopic rod on the front side of the telescopic arm is collided and the corresponding telescopic rod is retracted into the respective guide pipe, at this time the steel wire rope 11 is pulled and the tension of the steel wire rope 11 increases, thereby changing the force of the tension sensor 6 connected with the steel wire rope 11, the tension sensor 6 transmits the force change signal to the control module, when the increased tension change value exceeds the set rated value, the control module controls the slewing bearing to stop the rotation, if necessary, reverse rotation operation is performed. Similarly, when the telescopic arm rotates and collides with the building, at least one of the base arm telescopic rod 23, the first telescopic rod and the first telescopic rod on the front side of the telescopic arm is collided and retracted into the respective guide pipe, the tension of the steel wire rope 11 increases, pulls the spring rod 17, the spring 5 is compressed, triggers the limit switch, the signal of the limit switch is transmitted to the control module, the control module controls the slewing bearing to stop the rotation, if necessary, reverse rotation operation is performed.

Claims

1. A collision avoidance device for a telescopic arm of a window cleaning machine, comprising a base arm and a telescopic arm, the telescopic arm and the base arm being connected, characterized in that The telescopic arm comprises a first telescopic arm, a second telescopic arm and a third telescopic arm; the front side of the base arm is provided with a rope winding device; the end of the front side of the base arm is provided with a base arm guide support; the end of the front side of the first telescopic arm is provided with a first guide support; the end of the front side of the second telescopic arm is provided with a second guide support; the top end of the third telescopic arm is provided with a pulley frame; the pulley frame is provided with a pulley and a tension sensor; the pulley frame, the base arm guide support, the first guide support and the second guide support are arranged in a straight line in sequence; the rope winding device is wound with a steel wire rope; the front end of the steel wire rope passes through the base arm guide support, the first guide support and the second guide support in sequence, and is connected with the tension sensor after passing through the pulley.

2. A collision avoidance device for a telescopic boom of a window cleaning machine according to claim 1, characterised in that The pulley frame is provided with a mechanical limiting device; the mechanical limiting device comprises a spring, a spring rod and a limiting switch; the two ends of the spring rod are provided with a lower end piece and an upper end piece; the pulley frame is provided with a first limiting piece and a second limiting piece; the first limiting piece and the second limiting piece are respectively provided with a first limiting hole and a second limiting hole; the spring rod is sleeved in the first limiting hole and the second limiting hole; the spring is sleeved on the spring rod, and the one end of the spring is tightly pressed against the lower end piece of the spring rod, and the other end of the spring is tightly pressed against the bottom of the first limiting piece; the upper end piece of the spring rod is connected with the tension sensor; the spring is connected with the limiting switch.

3. The anti-collision device for the telescopic arm of the window-cleaning robot according to claim 1, characterized in that The rope winding device comprises a winding drum, a speed reducer and a rope winding frame; the winding drum is connected with the speed reducer; the steel wire rope is wound on the winding drum; the rope winding frame is installed on the base arm.

4. The collision avoidance apparatus for a telescoping arm of a window washing machine of claim 1 wherein The base arm guide support comprises a base arm guide tube and a base arm telescopic rod; the base arm guide tube is installed on the front side of the base arm; the base arm telescopic rod is sleeved in the base arm guide tube; the end of the base arm telescopic rod is provided with a base arm rope hole; the base arm rope hole is penetrated with the steel wire rope; the first guide support and the second guide support have the same structure as the base arm guide support; the first guide support comprises a first guide tube and a first telescopic rod; the first guide tube is installed on the front side of the first telescopic arm; the first telescopic rod is sleeved in the first guide tube; the end of the first telescopic rod is provided with a first rope hole; the first rope hole is penetrated with the steel wire rope; the second guide support comprises a second guide tube and a second telescopic rod; the second guide tube is installed on the front side of the second telescopic arm; the second telescopic rod is sleeved in the second guide tube; the end of the second telescopic rod is provided with a second rope hole; the first rope hole is penetrated with the steel wire rope; the base arm rope hole, the first rope hole, the second rope hole and the third rope hole are located on the same horizontal line; the front end of the steel wire rope passes through the base arm rope hole, the first rope hole, the second rope hole and the third rope hole in sequence, and is connected with the tension sensor after passing through the pulley.

5. The collision avoidance apparatus for a window cleaning machine telescopic boom according to claim 1, wherein The base arm is provided with an electrical box; the electrical box is provided with a control module; the control module is electrically connected with the tension sensor and the limiting switch; the function of the control module is to receive and process the tension sensor signal and the limiting switch signal, and transmit a control signal; the control signal is used for controlling the operation of the slewing bearing of the window cleaning machine and controlling the winding and unwinding of the rope winding device.

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