CN212864035U

CN212864035U - Glass mounting and adjusting device suitable for aerial work platform truck

Info

Publication number: CN212864035U
Application number: CN202022152172.4U
Authority: CN
Inventors: 许树根; 许仲
Original assignee: Zhejiang Dingli Machinery Co Ltd
Current assignee: Zhejiang Dingli Machinery Co Ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-04-02
Anticipated expiration: 2030-09-27

Abstract

The utility model provides a glass installation adjusting device suitable for high altitude construction platform car, includes one-level adjustment mechanism, second grade adjustment mechanism and connects one-level adjustment mechanism with linking arm between the second grade adjustment mechanism, one-level adjustment mechanism include first turn to the subassembly with connect in the second of first subassembly turns to the subassembly, second grade adjustment mechanism includes that the third turns to subassembly, fourth and connects the subassembly with the third turns to the subassembly with the fourth turns to the connecting seat between the subassembly, the rear end of linking arm with the second turns to the subassembly and connects and the front end with the third turns to the subassembly and connects. The utility model discloses can install on high altitude construction platform truck, promote required operation height by high altitude construction platform truck's promotion structure, and itself have a plurality of directions including turning to and the regulation degree of freedom of flexible action, realize accurate automatic positioning, reduce workman's intensity of labour and operating requirement by a wide margin, promoted convenience, security and work efficiency.

Description

Glass mounting and adjusting device suitable for aerial work platform truck

Technical Field

The utility model relates to a glass high altitude installation technical field specifically is a glass installation adjusting device suitable for aerial working platform truck.

Background

Along with the development of the society, the application of the glass curtain wall of the modern high-rise building is more and more extensive, especially, the glass directly replaces the wall of some buildings, and the glass for the existing building outer wall or curtain wall has the problems of thicker, fragility, high carrying difficulty and the like. And to the installation of large-scale glass at present generally be that the manual work installs a plurality of vacuum chuck on an installation frame, then adsorb glass on vacuum chuck back, lift up installation frame and glass together through the loop wheel machine, the rethread manual regulation of carrying out the gradient and controlling the position to the glass position to realize the installation. In the traditional installation process, after glass is moved to an installation wall body, the installation angle and the left and right positions of the glass are basically manually adjusted, the operation requirement of workers is high, and the labor intensity of the workers is high, so that the whole area, weight and length of the glass are limited in order that an operator can effectively control the position of the glass, and particularly when the length of the glass is more than 5m, the existing lifting tool for lifting faces the problem that the glass which is horizontally or laterally placed on the ground cannot be safely rotated to be in a vertical state in the lifting process; in addition, the conventional common lifting appliance for glass lifting has the problems of poor stability, serious influence of wind speed and the like during operation, and the fixed position needs to be frequently adjusted in the operation process, so that the problems of high danger of manually mounting glass by means of a lifting tool, easiness in sunstroke during high-temperature weather operation, high labor intensity, low working efficiency and the like are caused.

Aiming at the defects of the prior art mentioned above, some novel overhead glass installation modes appear at present, for example, the glass installation machine disclosed in patent document with the application number of CN201410835612.2 comprises a moving base, a bottom plate, a lifting platform, a side-shifting platform, a glass inclination angle adjusting platform and a pickup device, wherein the moving base comprises walking wheels and a frame, the walking wheels are installed on the left side and the right side of the frame, the bottom plate is installed on the frame, the lifting platform is fixed on the bottom plate, the side-shifting platform is fixed at the upper end of the lifting platform, the glass inclination angle adjusting platform is fixed on the side-shifting platform, and the pickup device is installed on the glass inclination angle adjusting platform.

SUMMERY OF THE UTILITY MODEL

A technical object of the utility model is to provide a glass installation adjusting device suitable for aerial working platform car solves the workman that exists among the prior art and operates the degree of difficulty height, intensity of labour is big, the stability and the security of installation regulation relatively poor, adjust the problem that structure and function are perfect inadequately.

The utility model discloses a concrete technical scheme as follows: the utility model provides a glass installation adjusting device suitable for high altitude construction platform car, includes one-level adjustment mechanism, second grade adjustment mechanism and connects one-level adjustment mechanism with linking arm between the second grade adjustment mechanism, one-level adjustment mechanism include first turn to the subassembly with connect in the second of first subassembly turns to the subassembly, second grade adjustment mechanism includes that the third turns to subassembly, fourth and connects the subassembly with the third turns to the subassembly with the fourth turns to the connecting seat between the subassembly, the rear end of linking arm with the second turns to the subassembly and connects and the front end with the third turns to the subassembly and connects.

Preferably, the first steering assembly comprises a first mounting seat and a first swing oil cylinder mounted on the first mounting seat; the second steering assembly comprises a second mounting seat and a second swing oil cylinder arranged on the second mounting seat; the mounting base II is connected with the swing oil cylinder I, and the rear end of the connecting arm is connected with the swing oil cylinder II.

Preferably, the rotating plane of the first swing oil cylinder is perpendicular to the rotating plane of the second swing oil cylinder; the first swing oil cylinder is vertically arranged in the first mounting seat in a manner that the rotating shaft faces up and down, and the second swing oil cylinder is horizontally arranged in the second mounting seat in a manner that the rotating shaft faces left and right.

Preferably, the third steering assembly comprises a third mounting seat and a third swing oil cylinder arranged on the third mounting seat; the fourth steering assembly comprises a mounting seat IV and a swing oil cylinder IV arranged on the mounting seat IV; the front end of the connecting arm is connected with the mounting seat III, one side of the connecting seat is connected with the swing oil cylinder III, and the other side of the connecting seat is connected with the mounting seat IV; the connecting seat comprises an upper fixed seat, a lower movable seat and a first pushing oil cylinder, the lower movable seat is connected with the upper fixed seat in a sliding mode and can slide back and forth relative to the upper fixed seat, the first pushing oil cylinder is installed on the upper fixed seat, and the lower movable seat is connected with the output end of the first pushing oil cylinder; the output end of the swing oil cylinder III is connected with the upper fixed seat, and the mounting seat IV is connected to the lower movable seat.

Preferably, the lower surface of the upper fixed seat is provided with a slide bar, the upper surface of the lower movable seat is provided with a sliding groove matched with the slide bar, and the pushing oil cylinder is located between the upper fixed seat and the lower movable seat.

Preferably, the connecting seat further comprises a second pushing oil cylinder, the fourth mounting seat is connected with the lower movable seat in a sliding mode and can slide left and right relative to the lower movable seat, the second pushing oil cylinder is mounted on the lower movable seat, and the output end of the second pushing oil cylinder is connected with the fourth mounting seat.

Preferably, the lower movable seat is provided with a front end face, a sliding strip is arranged on the front end face, a sliding groove matched with the sliding strip is arranged on the mounting seat four, and the pushing oil cylinder two is located between the front end face of the lower movable seat and the mounting seat four.

Preferably, the rotating plane of the swing oil cylinder III is perpendicular to the rotating plane of the swing oil cylinder IV; the swing oil cylinder three is horizontally arranged with a rotating shaft facing front and back relative to the connecting seat, and the swing oil cylinder four is vertically arranged with a rotating shaft facing up and down relative to the connecting seat.

As preferred, the linking arm includes outer fixed arm, interior digging arm and promotion hydro-cylinder three, interior digging arm cover is established can stretch out in the outer fixed arm's the inner chamber and follow outer fixed arm, it installs to promote hydro-cylinder three on the outer fixed arm, the output that promotes hydro-cylinder three with the corresponding connecting portion that set up on the interior digging arm are connected, the rear end of outer fixed arm is equipped with back connecting portion, back connecting portion conduct the rear end of linking arm and with the second turns to the subassembly and connects, the front end of interior digging arm is equipped with preceding connecting portion, preceding connecting portion conduct the front end of linking arm and with the third turns to the subassembly and connects.

As preferred, preceding connecting portion include fixed connector, movable rod one, movable rod two and promotion hydro-cylinder four, fixed connector with the mount pad three-phase is articulated, movable rod one with fixed connector is articulated mutually, two one ends of movable rod with movable rod one is articulated mutually and the other end with the mount pad three-phase is articulated, promotion hydro-cylinder four is installed the front end of interior digging arm, the output of promotion hydro-cylinder four with movable rod one is articulated mutually or with movable rod two-phase is articulated or with the articulated axle of movable rod two is articulated mutually.

The technical advantages of the utility model reside in that glass installation adjusting device can install on high altitude construction platform car, promote required operation height by high altitude construction platform car's promotion structure, and itself have the regulation degree of freedom including turning to and flexible action of a plurality of directions, realize automatic location, the positioning range who provides is enough big and fix a position accurately, the timing requirement of the installation station when satisfying high altitude installation glass, reduce workman's intensity of labour and operating requirement by a wide margin, the convenience has been promoted, security and work efficiency, be worth using widely in this field.

Drawings

Fig. 1 is an angle structure diagram of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of another angle according to the embodiment of the present invention;

FIG. 3 is a schematic sectional view of a partial structure according to an embodiment of the present invention;

the names of the parts corresponding to the numbers in the figure are respectively: 1-mounting seat one, 2-swinging cylinder one, 3-mounting seat two, 4-swinging cylinder two, 5-mounting seat three, 6-swinging cylinder three, 7-mounting seat four, 8-swinging cylinder four, 9-upper fixed seat, 10-lower movable seat, 11-pushing cylinder one, 12-pushing cylinder two, 13-outer fixed arm, 14-inner movable arm, 15-pushing cylinder three, 16-fixed head, 17-movable rod one, 18-movable rod two, 19-pushing cylinder four.

Detailed Description

The invention will be further explained by means of specific embodiments with reference to the drawings, in which:

referring to fig. 1 and 2, an embodiment of a glass installation adjusting device suitable for an aerial work platform truck comprises a primary adjusting mechanism, a secondary adjusting mechanism and a connecting arm connected between the primary adjusting mechanism and the secondary adjusting mechanism, wherein the primary adjusting mechanism comprises a first steering component and a second steering component connected with the first steering component, the secondary adjusting mechanism comprises a third steering component, a fourth steering component and a connecting seat connected between the third steering component and the fourth steering component, the rear end of the connecting arm is connected with the second steering component, the front end of the connecting arm is connected with the third steering component, the primary adjusting mechanism is connected and fixed on the aerial work platform truck, the platform connecting part can be fixedly connected with the platform of the aerial work platform car, and the platform of the aerial work platform car can be optionally removed and directly connected with the platform connecting part of the aerial work platform car.

Regarding the first steering assembly, in particular, the first steering assembly comprises a mounting seat I1 and a swing oil cylinder I2 mounted on the mounting seat I1; the second steering assembly comprises a second mounting seat 3 and a second swing oil cylinder 4 mounted on the second mounting seat 3; the second mounting seat 3 is connected with the first swing oil cylinder 2, and the rear end of the connecting arm is connected with the second swing oil cylinder 4.

Regarding the specific arrangement of the first swing oil cylinder 2 and the swing oil cylinder 2, in this embodiment, the rotation plane of the first swing oil cylinder 2 is perpendicular to the rotation plane of the second swing oil cylinder 4, the first swing oil cylinder 2 is vertically arranged in the first mounting seat 1 in a manner that the rotating shaft faces up and down, and the second swing oil cylinder 4 is horizontally arranged in the second mounting seat 3 in a manner that the rotating shaft faces left and right, that is, the first swing oil cylinder 2 rotates the whole second mounting seat 3 and the structure connected behind the second mounting seat together leftwards or rightwards, while the second swing oil cylinder 4 rotates the whole connecting arm and the structure connected behind the connecting arm together upwards or downwards, and the two swing oil cylinders are used for rapidly moving the glass sucker frame to be connected with the secondary adjusting mechanism within a relatively large space range.

The first mounting seat 1 is a direct connection part with the aerial work platform vehicle, like a scissor-type aerial work platform vehicle in the background art, the first mounting seat 1 can be directly connected to a jacking platform of the aerial work platform vehicle, an intermediate connection structure can also be added, and simply, if a connecting rod transversely connected between the jacking platform and the first mounting seat 1 is selected to be arranged. For example, the head end of the lifting arm of the cantilever-type aerial work platform truck can be directly connected with the first mounting seat 1 or hinged with the first mounting seat 1, meanwhile, the head end of the lifting arm is provided with a pushing oil cylinder, and the output end of the pushing oil cylinder is hinged with the first mounting seat 1, so that connection can be achieved, and upward or downward rotation adjustment of a certain angle can be performed on the first mounting seat 1 through the pushing oil cylinder, namely the whole adjusting device.

As for the third steering assembly, in particular, it includes a mounting seat three 5 and a swing cylinder three 6 mounted on the mounting seat three 5; the fourth steering assembly comprises a mounting seat IV 7 and a swing oil cylinder IV 8 arranged on the mounting seat IV 7; the front end of the connecting arm is connected with a third mounting seat 5, one side of the connecting seat is connected with a third swing oil cylinder 6, and the other side of the connecting seat is connected with a fourth mounting seat 7. The connecting seat comprises an upper fixed seat 9, a lower movable seat 10 and a first pushing oil cylinder 11, the lower movable seat 10 is connected with the upper fixed seat 9 in a sliding mode and can slide back and forth relative to the upper fixed seat 9, the first pushing oil cylinder 11 is installed on the upper fixed seat 9, and the lower movable seat 10 is connected with the output end of the first pushing oil cylinder 11; the output end of the swing oil cylinder III 6 is connected with the upper fixed seat 9, and the mounting seat IV 7 is connected with the lower movable seat 10. The swing oil cylinder is naturally used for steering adjustment, and further, the swing oil cylinder is combined with a telescopic connecting seat to adjust linear extension or retraction, and after the primary adjusting mechanism is roughly adjusted and positioned (generally, glass is moved to the position near an installation position), the primary adjusting mechanism finely adjusts and positions the glass sucker frame in a relatively small space range to find a final accurate installation position.

Regarding the sliding connection manner between the upper fixed seat 9 and the lower movable seat 10, in this embodiment, the lower surface of the upper fixed seat 9 is provided with a left sliding strip and a right sliding strip, the upper surface of the lower movable seat 10 is provided with a sliding groove matched with the sliding strips, the groove type is a dovetail groove, the sliding strips are in an i shape, and the first pushing oil cylinder 11 is located between the upper fixed seat 9 and the lower movable seat 10.

In addition, the connecting seat further comprises a second pushing oil cylinder 12, the fourth mounting seat 7 is also connected with the lower movable seat 10 in a sliding mode and can slide left and right relative to the lower movable seat 10, the second pushing oil cylinder 12 is mounted on the lower movable seat 10, and the output end of the second pushing oil cylinder is connected with the fourth mounting seat 7. Regarding the sliding connection mode, specifically, the lower movable seat 10 has a front end surface, the front end surface is provided with an upper slide bar and a lower slide bar, the mounting seat four 7 is provided with a sliding groove matched with the slide bars, the groove type is also selected as a dovetail groove, the shape of the slide bars is also selected as an 'I' -shaped, and the pushing oil cylinder two 12 is positioned between the front end surface of the lower movable seat 10 and the mounting seat four 7, and is also positioned between the two slide bars.

Regarding the specific arrangement of the swing cylinder three 6 and the swing cylinder four 8, in this embodiment, it is adopted that the rotation plane of the swing cylinder three 6 is perpendicular to the rotation plane of the swing cylinder four 8, the swing cylinder three 6 is a horizontal arrangement in which the rotation axis is oriented forward and backward relative to the connection seat, the swing cylinder four 8 is a vertical arrangement in which the rotation axis is oriented upward and downward relative to the connection seat, that is, the swing cylinder three 6 rotates the whole telescopic connection seat and the structure connected behind the telescopic connection seat leftward or rightward, and the swing cylinder four 8 directly controls the glass sucker frame to rotate around the rotation axis of the swing cylinder four 8.

Therefore, from the detailed explanation of the secondary adjusting mechanism, the two-direction rotary adjustment and the two-direction linear adjustment provide relatively more abundant adjusting contents, and are sufficient supplementary adjustment after the primary adjusting mechanism is operated. Besides the first-stage adjusting mechanism and the second-stage adjusting mechanism, the connecting arm connected between the first-stage adjusting mechanism and the second-stage adjusting mechanism not only plays a connecting role, but also plays an additional adjusting role.

Regarding the connecting arm, specifically, see fig. 3, it includes an outer fixed arm 13, an inner movable arm 14 and a third pushing cylinder 15, the inner movable arm 14 is sleeved in the inner cavity of the outer fixed arm 13 and can extend out from the outer fixed arm 13, the third pushing cylinder 15 is installed on the outer fixed arm 13, the output end of the third pushing cylinder 15 is connected with a corresponding connecting portion provided on the inner movable arm 14, the rear end of the outer fixed arm 13 is provided with a rear connecting portion, the rear connecting portion serves as the rear end of the connecting arm and is connected with the second steering assembly, the front end of the inner movable arm 14 is provided with a front connecting portion, and the front connecting portion serves as the front end of the connecting arm and is connected with the third steering assembly. The inner movable arm 14 sleeved in the outer fixed arm 13 can extend or retract relative to the outer fixed arm 13 by pushing the third oil cylinder 15, so that the whole fine adjusting mechanism connected with the inner movable arm 14 is driven to advance or retract, and a further adjustment degree is provided to meet the requirements of glass installation and positioning.

In addition, the front connecting portion comprises a fixed head 16, a first movable rod 17, a second movable rod 18 and a fourth pushing oil cylinder 19, the fixed connecting head 15 is hinged to the third mounting seat 5, the first movable rod 17 is hinged to the fixed connecting head 15, one end of the second movable rod 18 is hinged to the first movable rod 17, the other end of the second movable rod 18 is hinged to the third mounting seat 5, the fourth pushing oil cylinder 19 is mounted at the front end of the inner movable arm 14, and the output end of the fourth pushing oil cylinder 19 is hinged to the first movable rod 17, hinged to the second movable rod 18, or hinged to the first movable rod 17 and the second movable rod 18. As can be clearly and intuitively understood from the figure, the fixed head 16 is a connecting part with two side plates, the back of the mounting seat III 5 is provided with an upper hinge shaft and a lower hinge shaft, the head ends of the two side plates are hinged with the upper hinge shaft at the back of the mounting seat III 5, and the movable rod II 18 is provided with a left section and a right section and is hinged with the lower hinge shaft at the back of the mounting seat III 5; the joint shaft is arranged at the position close to the rear of the head ends of the two side plates, the first movable rod 17 is provided with a section, one end of the first movable rod is hinged with the joint shaft at the position close to the rear of the head ends of the two side plates, the other end of the first movable rod is hinged with the second movable rod 18 through a further independent joint shaft, and the output end of the fourth pushing oil cylinder 19 is hinged with the further independent joint shaft. The fourth pushing cylinder 19 is fixedly connected to the inner movable arm 14, and in this embodiment, the inner movable arm 14 has an installation cavity, and the fourth pushing cylinder 19 is installed in the installation cavity. The structural design of the front connecting part correspondingly provides an additional degree of adjustment, and the whole structure behind the front connecting part is driven to rotate upwards or downwards within a certain angle range.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The purpose of the utility model is completely and effectively realized. The functional and structural principles of the present invention have been shown and described in the embodiments, and the embodiments of the present invention can be modified or altered without departing from the principles.

Claims

1. The utility model provides a glass installs adjusting device suitable for high altitude construction platform car which characterized in that: including one-level adjustment mechanism, second grade adjustment mechanism and connection one-level adjustment mechanism with linking arm between the second grade adjustment mechanism, one-level adjustment mechanism include first steering assembly and connect in the second of first steering assembly turns to the subassembly, second grade adjustment mechanism includes that the third turns to subassembly, fourth steering assembly and connects the third steering assembly with the fourth turns to connecting seat between the subassembly, the rear end of linking arm with the second turns to the subassembly and connects and the front end with the third turns to the subassembly and connects.

2. The glass mounting and adjusting device suitable for the aerial platform truck as claimed in claim 1, wherein: the first steering assembly comprises a first mounting seat (1) and a first swing oil cylinder (2) mounted on the first mounting seat (1); the second steering assembly comprises a second mounting seat (3) and a second swing oil cylinder (4) mounted on the second mounting seat (3); the second mounting seat (3) is connected with the first swing oil cylinder (2), and the rear end of the connecting arm is connected with the second swing oil cylinder (4).

3. The glass mounting and adjusting device suitable for the aerial platform truck as claimed in claim 2, wherein: the rotating plane of the first swing oil cylinder (2) is vertical to the rotating plane of the second swing oil cylinder (4); the swing oil cylinder I (2) is vertically arranged in the mounting seat I (1) in a manner that the rotating shaft faces up and down, and the swing oil cylinder II (4) is horizontally arranged in the mounting seat II (3) in a manner that the rotating shaft faces left and right.

4. The glass mounting and adjusting device suitable for the aerial platform truck as claimed in claim 1, wherein: the third steering assembly comprises a third mounting seat (5) and a third swing oil cylinder (6) mounted on the third mounting seat (5); the fourth steering assembly comprises a mounting seat four (7) and a swing oil cylinder four (8) mounted on the mounting seat four (7); the front end of the connecting arm is connected with the third mounting seat (5), one side of the connecting seat is connected with the third swing oil cylinder (6), and the other side of the connecting seat is connected with the fourth mounting seat (7); the connecting seat comprises an upper fixed seat (9), a lower movable seat (10) and a first pushing oil cylinder (11), the lower movable seat (10) is connected with the upper fixed seat (9) in a sliding mode and can slide back and forth relative to the upper fixed seat (9), the first pushing oil cylinder (11) is installed on the upper fixed seat (9), and the lower movable seat (10) is connected with the output end of the first pushing oil cylinder (11); the output end of the swing oil cylinder III (6) is connected with the upper fixed seat (9), and the mounting seat IV (7) is connected to the lower movable seat (10).

5. The glass mounting adjustment device suitable for the aerial platform truck as claimed in claim 4, wherein: the lower surface of the upper fixed seat (9) is provided with a sliding strip, the upper surface of the lower movable seat (10) is provided with a sliding groove matched with the sliding strip, and the first pushing oil cylinder (11) is located between the upper fixed seat (9) and the lower movable seat (10).

6. The glass mounting adjustment device suitable for the aerial platform truck as claimed in claim 4, wherein: the connecting seat further comprises a second pushing oil cylinder (12), the fourth mounting seat (7) is connected with the lower movable seat (10) in a sliding mode and can slide left and right relative to the lower movable seat (10), the second pushing oil cylinder (12) is installed on the lower movable seat (10), and the output end of the second pushing oil cylinder is connected with the fourth mounting seat (7).

7. The glass mounting adjustment device suitable for the aerial platform truck as defined in claim 6, wherein: the lower movable seat (10) is provided with a front end face, a sliding strip is arranged on the front end face, a sliding groove matched with the sliding strip is arranged on the fourth mounting seat (7), and the second pushing oil cylinder (12) is located between the front end face of the lower movable seat (10) and the fourth mounting seat (7).

8. The glass mounting adjustment device suitable for the aerial platform truck as claimed in claim 4, wherein: the rotating plane of the swing oil cylinder III (6) is vertical to the rotating plane of the swing oil cylinder IV (8); the swing oil cylinder III (6) is horizontally arranged with a rotating shaft facing front and back relative to the connecting seat, and the swing oil cylinder IV (8) is vertically arranged with a rotating shaft facing up and down relative to the connecting seat.

9. The glass mounting adjustment device suitable for the aerial platform truck as claimed in claim 4, wherein: the linking arm includes outer fixed arm (13), interior digging arm (14) and three (15) of promotion hydro-cylinder, interior digging arm (14) cover is established stretch out in the inner chamber of outer fixed arm (13) and can follow outer fixed arm (13), it installs to promote three (15) of hydro-cylinder outer fixed arm (13) on, the output of promotion hydro-cylinder three (15) with the corresponding connecting portion that set up on interior digging arm (14) are connected, the rear end of outer fixed arm (13) is equipped with back connecting portion, back connecting portion conduct the rear end of linking arm and with the second turns to the subassembly and connects, the front end of interior digging arm (14) is equipped with preceding connecting portion, preceding connecting portion conduct the front end of linking arm and with the third turns to the subassembly and connects.

10. The glass mounting adjustment device for aerial platform trucks of claim 9, wherein: preceding connecting portion include fixed head (16), movable rod (17), movable rod two (18) and promote four (19) of hydro-cylinder, fixed head (16) with mount pad three (5) are articulated mutually, movable rod one (17) with fixed head (16) are articulated mutually, movable rod two (18) one end with movable rod one (17) are articulated mutually and the other end with mount pad three (5) are articulated mutually, promote four (19) of hydro-cylinder and install the front end of interior movable arm (14), the output that promotes four (19) of hydro-cylinder with movable rod one (17) are articulated mutually or with movable rod two (18) are articulated mutually or with movable rod one (17) with the articulated axle of movable rod two (18) is articulated mutually.