CH715557A2 - Bras téléscopique et machine de nettoyage de vitres. - Google Patents

Abstract

The invention concerns a telescopic bras and a machine de nettoyage de vitres, comprenant deux bras à gaine coulissante et a mechanisme de guidage. Le mechanisme de guidage comprend a premier composant de guidage (4) and a second composant de guidage. Le premier composant de guidance et le second composant de guidance correspond respectively to des deux extremes de chaque bras à gaine coulissante. Le premier composant de guidage est couple de manière fixe au bras extérieur des deux bras à gaine coulissante, et le deuxième composant de guidage est couple de manière fixe au bras intérieur des deux bras à gaine coulissante. Le premier composant de guidage comprend une pluralité d'ensembles d'éléments de guidage disposés sur le bras extérieur, chaque élément de guidage comprenant un siège de montage (422) et a roue de guidage rotative (421) disposée sur le siège de montage, the roue de guidance étant en contact roulant avec the surface extérieure du bras intérieur ; le second composant de guidage comprend deux mecanismes de guidage opposés. Chaque mécanisme de guidage comprend une poutre de montage et deux guides de basculement disposés respectivelyment à deux extremes de la poutre de montage, chaque guide de basculement étant pourvu d'une première roue et d'une seconde roue dont les axes sont perpendiculaires entre eux. Les deux roues sont en contact de roulement avec la surface interne du bras extérieur, L'invention garantit que le bras intérieur se déplace droit par rapport au bras extérieur, améliorant ainsi la stabilité du mouvement.

Description

Technical area

The invention relates to the technical field of window cleaners, in particular a telescopic arm and a window cleaner.

Prior art

The window cleaner is a new type of mechanical product developed in recent years due to the proliferation of high-rise buildings. Due to the diversification of construction styles and large-span construction scale, window cleaners should be used with greater height and larger size. Currently, the window cleaner generally includes a cart, the cart including a cart moving motor, the cart including a column turntable, the column turntable including a column, the column including a column rotary motor, and the upper end of the column with an arrow. One end of the boom is equipped with a basket and the basket is equipped with a weight detection limiter for the basket. A small boom is arranged between one end of the boom and the basket, the two ends of the small boom are each equipped with a height detection limiter for the basket. The limiter has a hoisting machine room on one side of the column, and a hoisting system is provided in the hoisting machine room, which is provided with a spool, one end of the spool is provided with a motor which rotates the coil. The motor is provided with a motor brake, the small boom is provided with a gondola swing motor for the gondola. However, the reach of the boom is limited, making it difficult to work over long distances.

[0003] Therefore, there is a need for a telescopic arm which is retractable and guided, which can increase the working surface of the window cleaner.

Invention Summary

[0004] In view of the aforementioned disadvantages of the prior art, an object of the present invention is to provide a telescopic arm and a window cleaner to solve the problem of the limited working range of the prior art window cleaners.

[0005] To achieve the above objectives and other related objects, the present invention provides a telescopic arm comprising two sliding sleeve arms and a guide mechanism. The guide mechanism includes a first guide component and a second guide component. The first guide component and the second guide component respectively correspond to both ends of each sliding sleeve arm. The first guide component is fixedly coupled to the outer arm of the two sliding sleeve arms, and the second guide component is fixedly coupled to the inner arm of the two sliding sleeve arms. The first guide component includes a plurality of sets of guide members disposed on the outer arm, each guide member including a mounting seat and a rotatable guide wheel disposed on the mounting seat, the guide wheel being rolling contact with the outer surface of the inner arm; the second guide component includes two opposing guide mechanisms. Each guide mechanism comprises a mounting beam and two tilting guides disposed respectively at two ends of the mounting beam, each tilting guide being provided with a first wheel and a second wheel whose axes are mutually perpendicular. Both wheels are in rolling contact with the inner surface of the outer arm.

[0006] Preferably, the outer arm and the inner arm of the two sliding sleeve arms are square tubular. The guide elements are divided into six groups, and every two groups are arranged with an inner arm face. The two guide mechanisms are arranged in correspondence of the two opposite faces of the outer arm, and the first wheel and the second wheel are respectively in contact with different faces of the outer arm.

[0007] Preferably, the mounting seat is provided with a rotating shaft. Both ends of the rotating shaft are respectively fixed to the support plate on the outer arm by an eccentric sleeve.

[0008] Preferably, the first guide component further comprises a clamp attached to the outer arm. The clamp is in contact with an outer surface of the inner arm.

[0009] Preferably, in the same tilting guide, the second wheel is a single wheel which rotates in a horizontal plane, the first wheel grouping together several wheels which are symmetrically distributed on both sides of the second wheel and which rotate in a vertical plane; two second wheels of the same guide mechanisms are respectively in rolling contact with opposite faces of the outer arm.

[0010] Preferably, the mounting beam is mounted to the base by a mounting shaft, the base being fixedly coupled to the inner arm.

[0011] Preferably, the mounting shaft is an eccentric shaft.

[0012] Preferably, the telescopic arm comprises at least three sleeved arms in a sliding manner, in which the guide mechanism is arranged between the two connected arms.

The present invention also provides a window cleaner comprising a support arm and a lifting mechanism coupled to the support arm, the support arm being a telescopic arm as described above.

[0014] As described above, the telescopic arm and the window cleaner of the present invention have the following beneficial effects: a guide mechanism is provided between the two sliding sleeve arms, and the inner arm is relatively opposed by the arrangement of the first guide component and the second guide component. The straight line of the arm ensures the stability of the expansion and contraction of the inner arm, so that the complete telescopic arm can be transformed into a multi-section arm, thus increasing the telescopic stroke and increasing the working area of the cleaner. windows.

Description of the drawings

[0015] Figure 1 shows a schematic view of a telescopic arm of the present invention. Figure 2 shows a side view of the telescopic arm of the present invention. Figure 3 shows a schematic view of a first guide component of the present invention. Figure 4 shows a schematic view of two guide elements in a first guide component of the present invention. Fig. 5 is a view showing the state of use of the second guide component of the present invention. Figure 6 shows a schematic view of the second guide component of the present invention.

Detailed Description of Preferred Embodiments

Embodiments of the present invention are described below by way of specific embodiments, and those skilled in the art can easily understand other advantages and functions of the present invention from the description.

[0017] With reference to figures 1 to 6, it should be understood that the structures, the proportions, the sizes which are illustrated in the drawings, are simply used to facilitate understanding and reading by those skilled in the art and are not intended to limit the practice of the present invention. Since the conditions are limited, any modification of the structure, proportional relationship or size adjustment shall remain in the present invention without affecting the effects and attainable objects of the present invention within the scope of the technical content disclosed. . In the meantime, the terms "upper", "lower", "left", "right", "intermediate", and "one/one", used herein, are also for convenience of description and are not not intended to limit the present. The scope of the invention can be implemented, and changing or adjusting the relative relationship is considered to be within the scope of the invention.

As shown in Figure 1 and Figure 2, the present invention provides a telescopic arm comprising two sliding sleeve arms and a guide mechanism. The guide mechanism includes a first guide component 4 and a second guide component 5. The first guide component 4 and the second guide component 5 respectively correspond to both ends of each sliding sleeve arm. The first guide component 4 is fixedly coupled to the outer arm of the two sliding sleeve arms, and the second guide component 5 is fixedly coupled to the inner arm of the two sliding sleeve arms. In this embodiment, two sliding sleeve arms can be the first section arm 3 and the second section arm 1 or the second section arm 1 and the third section arm 2 of Figure 1. As shown in Figures 3 and 4, the first guide component 4 includes a plurality of sets of guide members 42 disposed on the outer arm, each guide member 42 including a mounting seat 422 and a rotatable guide wheel 421 disposed on the mounting seat, the guide wheel 421 both in rolling contact with the outer surface of the inner arm (see the third section arm 3 in the figure); as shown in Figures 5 and 6, the second guide component 5 comprises two opposing guide mechanisms. Each guide mechanism comprises a mounting beam 52 and two tilting guides 51 disposed respectively at two ends of the mounting beam, each tilting guide 51 being provided with a first wheel 511 and a second wheel 513 whose axles are perpendicular to each other. The first wheel 511 and the second wheel 513 wheels are in rolling contact with the inner surface of the outer arm (see the first section arm 3 in the figure).

[0019] The present invention ensures that the inner arm (see the second section arm 1 in the figure) protrudes or retracts from the outer arm (see the first section arm 1 in the figure) by providing the first component guide 4 and the second guide component 5. In motion, the first guide component 4 ensures that the front end of the inner arm (the inner arm extends in the forward direction), when extended or retracted, the outer surface of the inner arm is always in rolling contact with the guide wheel 421, and all the guide wheels 421 are wrapped around the inner arm so that the inner arm is not tilted in the axial direction and the plurality of wheels guide 421 can reduce the deformation of the inner arm; in addition, when the rear end of the inner arm is extended or retracted, it is always in contact with the wall of the outer arm through the second guide component 5, so that the first wheel 511 and the second wheel 513 of the second guide assembly are always in rolling contact with the outer arm, reducing surface area requirements of the outer arm wall; in addition, the front and rear ends of the inner arm are in rolling contact, which reduces the friction of the telescopic arm when telescoping and improves the stability of the movement.

[0020] The telescopic arm comprises at least two sliding sleeve arms, and a guide mechanism is arranged between two sliding sleeve arms. That is, the aforementioned telescopic arm is made of two sections, respectively the first section arm 3 and the second section arm 1 in the figure, the first section arm 3 is an outer arm and the second section 1 is an inner arm; it can also be three sections, respectively the first section arm 3, the second section arm 1 and the third section arm 2 in the figure. The two sliding sleeve arms can be the first section arm 3 and the second section arm 1 or the second section arm and the third section arm 2 in figure 1, i.e. the first section 3 is the outer arm of the second section arm 1, the second section arm 1 is the inner arm of the first section arm 3, and the second section arm 1 is the outer arm of the third section arm, the third section 2 is the inner arm of the second section arm 1. It may also be an arm with four or more sections, and two of the radially adjacent arms may be the two sliding sleeve arms between which is deposited a mechanism guide above.

[0021] This embodiment is described in detail a telescopic arm in three sections, Figures 1 and 3 showing the first guide component 4 placed between the second section arm 1 and the third section arm 2, and Figures 1 and 5 representing the second guide component 5 which is placed between the first section arm 3 and the second section arm 1.

[0022] To improve stability and structural strength, in this embodiment, the outer arm and the inner arm are square tubular, i.e. it is a set of concentric rectangles, and the segments are chained sequentially between the arms, and the space is the same, as shown in Fig. 3 and Fig. 4. As shown, the guide members 42 are divided into six groups, and every two groups correspond to one side of the inner arm (ie the third section arm 2); the two guide mechanisms correspond to the two opposite sides of the outer arm (ie the first section arm 3). The arrangement of faces is shown in Figures 5 and 6, and the first wheel 511 and the second wheel 513 are in contact with different faces of the outer arm (i.e. the first section arm 3). This embodiment surrounds the inner arm (see third section arm 2) circumferentially by six groups of guide members 42 to provide stability to the front end of the inner arm when extended or retracted, and is ensured by two guiding mechanisms. The rear end of the inner arm is in rolling contact with the inner wall of the outer arm to provide stability to the rear end of the inner arm when extended or retracted.

[0023] The first guide component: As shown in Figures 3 and 4, the guide elements 42 are divided into six groups and each two groups correspond to one side of the corresponding inner arm (i.e. the third section arm) to increase the contact surface between the guide element 42 and the third section arm (i.e. the inner arm). As shown in Figure 4, each guide member is provided with four guide wheels 421. That is, the first guide component has a total of twenty-four guide wheels, all of which are in rolling contact with the outer surface of the third section arm 3, and that all the guide wheels 421 of each guide element are arranged along the axis of the third section arm 3.

[0024] In order to ensure that all of the guide wheels 421 are in rolling contact with the third section arm 3, as shown in Fig. 4, in the embodiment, the mounting base 422 is provided with a rotating shaft 423 and the two ends of the rotary shaft 423 are fixed respectively through the eccentric sleeve 424 and a support plate (not shown) on the outer arm (i.e. the second section arm 1). The eccentric sleeve 424 is provided with a plurality of mounting holes, and all the mounting holes are distributed around the circumference arranged eccentrically. Mounting holes can be selected as needed during installation to ensure that the guide wheel 421 of the guide member is in contact with the outer surface of the third section arm 3.

[0025] As shown in Figure 3, the first guide component 4 in this embodiment may further comprise a clamp 43 fixedly connected to the outer arm (the second section arm 1). Clamp 43 contacts the outer surface of the inner arm (the third section arm described above). The clamp 43 is arranged to cooperate with the above-mentioned guide member 42 located under the inner arm to provide stable expansion and contraction of the inner arm in the upward and downward directions.

[0026] The first guide component 4 further includes a fixing sleeve 41 attached to the outer arm, and the fixing sleeve 41 is used to fix the mounting seat 422. In this embodiment, the fixing sleeves 41 are used to facilitate the attachment of all guide elements and all guide wheels have a diameter. There are no upward jumps to roll it into contact with the third section arm 3. Additionally, the attachment sleeve 41 acts as a reinforcing force to the outer arm.

[0027] The second guide component: As shown in Figures 5 and 6, the second guide component 5 comprises two guide mechanisms, and two guide mechanisms are arranged in correspondence with the opposite faces of the outer arm (i.e. the arm of first section 3), and each guide mechanism is provided with two tilting guides 51 and the tilting guides 51 can rotate around the end shaft of the mounting beam 52; each of the tilting guides 51 includes a base 512, the first wheel 511 and the second wheel 513 arranged on the base 512. In the same tilting guide 51, the second wheel 513 is a single wheel and rotates in a horizontal plane, and the first wheel 511 groups several wheels which are symmetrically distributed on both sides of the second wheel 513 in a vertical plane. In rotation, two wheels of the second guide wheel 513 are in rolling contact with the opposite faces of the outer arms (i.e. the first section arm 3). In this embodiment, in each of the tilting guides, the second wheel 513 on the left side is in contact with the left side wall surface of the outer arm, the second wheel 513 on the right side is in contact with the side wall surface right of the outside arm (the right of first section 3). The first wheel 511 of the upper tilt guide contacts the upper wall surface of the outer arm, the first wheel 511 of the lower tilt guide contacts the lower wall surface of the outer arm (i.e. the first section arm 3) so that the rear end of the inner arm (ie the second section arm 1) is moved stably.

[0028] In the embodiment, the mounting beam 52 is mounted to the base 54 via a mounting shaft 53, as shown in Figure 2 and Figures 5 and 6, the base 54 is fixedly connected with the inner arm (the second section arm 1) through the support frame 11. In order to ensure that the two tilt guides are in rolling contact with the outer arm, the mounting shaft 53 in this embodiment is a eccentric shaft, which can achieve relative tilting of the two tilting guides.

[0029] When the arm is to be extended, the second section arm is extended by the drive mechanism of the peripheral device, and the outer surface of the second section arm is in rolling contact with the first guide component at the end front of the first section arm, and the rear end of the second section arm of the second guide component is in rolling contact with the surface of the wall of the first section arm. When the second section arm extends, the third section arm also extends, and the outer surface of the third section arm is in rolling contact with the first guide component located at the forward end of the second section arm. section. The second guide component at the rear end of the third section arm is in rolling contact with the wall surface of the first section arm to ensure stable movement of the second section arm and the third section arm.

The present invention also provides a window cleaner comprising a support arm and a lifting mechanism coupled to the support arm, the support arm being a telescopic arm as described above. The support arm is generally a four-section telescopic arm, that is, the front ends of the first section, second section and third section arm are provided with the first guide component, the rear ends of the arm second section, third section and fourth section are provided with the second guide component. The stable movement of the second section, third section and fourth section arm is ensured by the arrangement of the first guide component and the second guide component.

In summary, the telescopic arm and the window cleaner of the present invention are provided with a guide mechanism located between the two sliding sheath arms. The first guide component and the second guide component are arranged to ensure the straight line of the inner arm with respect to the outer arm. The step ensures the stability of the expansion and contraction of the inner arm, so that the whole telescopic arm can be transformed into a multi-section arm, thus increasing the telescopic stroke and increasing the working area of the window cleaner. Therefore, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utility value.

The embodiments described above merely illustrate the principles of the invention and its effects and are not intended to limit the invention. Modifications or variants of the embodiments described above can be made by those skilled in the art without departing from the spirit and the scope of the invention. Therefore, all equivalent modifications made by those skilled in the art without departing from the spirit and scope of the invention should always be covered by the appended claims.

Claims (9)

1. A telescopic arm characterized in that it comprises two slidably installed arm segments and a guide mechanism, said guide mechanism comprising a first guide component and a second guide component, the two guide components corresponding to the two ends of the respective arm segment, the first guide component being fixedly coupled to the outer arm of the two arm segments, and the second guide component being fixedly coupled to the inner arm of the two arm segments, the first component guide including a plurality of sets of guide members disposed around the outer arm, each guide member including a mounting base and rotatable guide wheels disposed on the mounting base, the guide wheel being in rolling contact with the outer surface of the inner arm; the second guide component comprises two opposed guide mechanisms, each guide mechanism comprising a mounting bracket and two oscillating guide elements rotatably disposed at the two respective ends of the mounting bracket, each oscillating guide member being provided with a first wheel and a second wheel whose axes are mutually perpendicular, the first wheel and the second wheel being in rolling contact with the inner surface of the outer arm. 2. The telescopic arm according to claim 1, characterized in that the outer arm and the inner arm of the two arm segments have the shape of square tubes, the guide elements being divided into six groups and each two groups corresponding to a face of inner arm; the two guide mechanisms correspond to the two opposite faces of the outer arm, and the first wheel and the second wheel are respectively in contact with different faces of the outer arm. 3. The telescopic arm according to claim 1, characterized in that a rotary shaft is fixed on the mounting base, and both ends of the rotary shaft are respectively fixed to a support plate on the outer arm by sleeves eccentric lock. 4. The telescopic arm according to claim 1, characterized in that the first guide component further comprises a press block attached to the outer arm, and the press block is in contact with the outer surface of the inner arm. 5. The telescopic arm according to claim 1, characterized in that, in the same oscillating guide element, there is a single second wheel which rotates in a horizontal plane, and a plurality of said first wheels, which rotate in a vertical plane , are distributed symmetrically on the two sides of the second wheel; the two second wheels in the same guide mechanism are respectively in rolling contact with the opposite faces of the outer arm. 6. The telescopic arm according to claim 1, characterized in that the mounting bracket is mounted on the base by a mounting shaft, the base being fixedly connected to the inner arm. 7. The telescopic arm according to claim 6, characterized in that the mounting shaft is an eccentric axis. 8. The telescopic arm according to claim 1, characterized in that the telescopic arm comprises at least three arm segments slidably installed and the guide mechanism is arranged between the two connected arm segments. 9. A window cleaning machine, characterized in that the window cleaning machine comprises a support arm and a lifting mechanism connected to the support arm, and the support arm is the telescopic arm according to any of claims 1 to 8.