CN209742926U

CN209742926U - arch frame clamping arm support

Info

Publication number: CN209742926U
Application number: CN201920441502.6U
Authority: CN
Inventors: 蓝传雯
Original assignee: Individual
Current assignee: Sichuan Lanhai Intelligent Equipment Manufacturing Co Ltd
Priority date: 2019-04-03
Filing date: 2019-04-03
Publication date: 2019-12-06
Anticipated expiration: 2029-04-03

Abstract

The utility model discloses an arch center clamping arm support, which comprises an arm support and an arch center clamping device; the arm support comprises a pitching part pitching in the vertical direction and a main arm pitching in the vertical direction; one end of the main arm is hinged to the pitching part, and the other end of the main arm is provided with an arch frame clamping device; the arch frame clamping device comprises a main beam arranged on a main arm, arch frame clamping mechanisms are arranged at two ends of the main beam, and arch frame supporting frames are arranged on two sides of the main beam. The clamping device can stably and reliably clamp the folding steel arch centering, and guarantees the safety of transportation and erection of the folding steel arch centering in the tunnel. The main arm of the arm support has a large pitching angle, and can flexibly and conveniently lift the arch frame in the tunnel.

Description

Arch frame clamping arm support

Technical Field

The utility model relates to a tunnel construction field refers in particular to an bow member clamping cantilever crane.

Background

Over the years, the underground engineering industry in China has been rapidly developed, and the mechanization has been gradually popularized and applied in engineering technology, and particularly in the field of underground tunnel construction, great progress has been made. At present, in the tunnel construction process, a steel arch needs to be erected on an excavated rock face, the traditional steel arch is heavy, and the arch installation mainly depends on manual construction.

In order to solve the difficult problem that steel bow member exists among the prior art, the manipulator that has appeared using in the arch erecting operation gradually, but present manipulator is all through steel bow member centre gripping equipment, and the while is held a plurality of sections steel bow members, carries out fixed connection such as welding with its junction again, and such operation is same needs more manual work, and the safety can not obtain the guarantee. Therefore, with the development and progress of the technology, the foldable steel arch gradually appears, the steel arch is installed and folded, then is transported into the tunnel, is unfolded and erected and the like, a large amount of operations on the steel arch are left outside the tunnel, and the problems that the steel arch is time-consuming and labor-consuming to erect in the existing tunnel construction are solved.

And the problem of the stable transportation and clamping of the folding steel arch in the tunnel is solved by a good steel arch clamping device in the prior art.

Meanwhile, in order to facilitate the erection of the arch in the tunnel, the arm support is adopted to lift the arch to an installation station in the tunnel. As shown in fig. 1 and 2, the conventional arm support includes a main arm and a base, the main arm is hinged to the base, and the main arm is driven by an oil cylinder to pitch. The pitching angle of the existing arm support is too small, and is within the range of 0-90 degrees, and under many conditions, the pitching angle of the arm support can only reach 0-45 degrees or 0-60 degrees, and because the pitching angle of the existing arm support is too small, the existing arm support cannot flexibly lift the arch and drive the arch to move in the tunnel.

Disclosure of Invention

the utility model aims to provide a: to the problem that above-mentioned exists, provide an bow member clamping device, this clamping device can reliable and stable clamping folding steel bow member, guarantees the safety that folding steel bow member transported and erect in the tunnel. The main arm of the arm support has a large pitching angle, and can flexibly and conveniently lift the arch frame in the tunnel.

the utility model adopts the technical scheme as follows:

An arch center clamping arm support is characterized in that: the device comprises an arm support and an arch frame clamping device;

the arm support comprises a rotating part which rotates horizontally and a pitching part which pitches in the vertical direction

And a main arm that pitches in a vertical direction; one end of the pitching part is hinged to the rotating part, and the other end of the rotating part is hinged to the main arm; an arch frame clamping device is arranged at the other end of the main arm; the arch frame clamping device comprises a main beam arranged on a main arm, arch frame clamping mechanisms are arranged at two ends of the main beam, and arch frame supporting frames are arranged on two sides of the main beam.

Because above-mentioned structure, but every single move of every single move portion, main arm can every single move, then this cantilever crane can carry out the two-stage every single move, compares in current cantilever crane, the utility model discloses a cantilever crane every single move angle is bigger, can make things convenient for the nimble removal bow member that lifts of cantilever crane in the tunnel. Meanwhile, because the existing steel arch is formed by splicing a plurality of independent arc sections, the existing clamping device only clamps a part of the whole arch, namely, the clamping is an arc section. Therefore, the existing steel arch often only has one arch clamping mechanism, and the middle part of the arc-shaped section is often clamped. The arc sections of the folding steel arch are hinged together, so that the whole folding arch can not be clamped by an arch clamping mechanism on the existing clamping device; the stability of the folding steel arch in the transportation process cannot be guaranteed, and the safety of the arch erection process cannot be guaranteed. And the utility model discloses, come to press from both sides tight folding arch centering through two bow member fixture, two bow member support frames of deuterogamying come the auxiliary stay bow member, can effectual assurance folding steel bow member in the stability of transportation and the safety of bow member erection in-process.

Further, the rotating part is hinged on the arm support mounting platform; a horizontal rotating mechanism is arranged between the arm support mounting platform and the rotating part, and the horizontal rotating mechanism drives the rotating part to horizontally rotate relative to the arm support mounting platform;

A pitching mechanism is arranged between the rotating part and the pitching part and drives the pitching part to pitch in the vertical direction relative to the rotating part;

And a main arm pitching mechanism is arranged between the pitching part and the main arm, and the main arm pitching mechanism drives the main arm to pitch in the vertical direction relative to the pitching part.

further, the horizontal rotating mechanism is a horizontal oil cylinder, one end of the horizontal oil cylinder is hinged to the arm support mounting platform, and the other end of the horizontal oil cylinder is hinged to the rotating part;

The pitching mechanism is a pitching oil cylinder, one end of the pitching oil cylinder is hinged to the pitching part, and the other end of the pitching oil cylinder is hinged to the rotating part;

The main arm pitching mechanism is a main arm pitching oil cylinder, one end of the main arm pitching oil cylinder is hinged to the rotating part, and the other end of the main arm pitching oil cylinder is hinged to the main arm; or the main arm pitching mechanism comprises a first connecting rod, a second connecting rod and a main arm pitching oil cylinder; one end of the connecting rod is hinged to the pitching part, the other end of the connecting rod is hinged to one end of the second connecting rod, and the other end of the second connecting rod is hinged to the main arm; the pitching part, the first connecting rod, the second connecting rod and the main arm form a four-bar linkage; one end of the main arm pitching oil cylinder is hinged to the second connecting rod, and the other end of the main arm pitching oil cylinder is hinged to the main arm.

Among the prior art, the main arm drives through an hydro-cylinder for the every single move of base, and the utility model discloses in, the every single move of main arm passes through hydro-cylinder and link mechanism cooperation, can make the every single move angle of main arm carry out one step of increase, the nimble use of cantilever crane of being convenient for.

Furthermore, the distance of the arch center clamping mechanisms at the two ends of the main beam in the axial direction of the main beam is adjustable.

Because the distance between the two arch clamping mechanisms is adjustable, the arch clamping device can clamp arches with different widths, and the application range of the arch clamping device is enlarged.

Furthermore, the main beam comprises a fixed beam and movable beams arranged at two ends of the fixed beam in a sliding manner, and the movable beams are provided with arch frame clamping mechanisms; a telescopic mechanism is arranged between the fixed beam and the movable beam and used for driving the movable beam to slide along the axis direction of the fixed beam.

furthermore, the telescopic mechanism is arranged inside or outside the fixed beam and the movable beam, the telescopic mechanism is an oil cylinder, one end of the oil cylinder is hinged with the fixed beam, and the other end of the oil cylinder is hinged with the movable beam;

or telescopic machanism sets up the outside at fixed beam and walking beam, telescopic machanism is including adjusting a section of thick bamboo, lead screw one and lead screw two, lead screw one end is articulated with the fixed beam, and the other end and an adjustment section of thick bamboo one end threaded connection, two one ends of lead screw and an adjustment section of thick bamboo other end threaded connection, the other end and walking beam are articulated, the screw of lead screw one and lead screw two revolves to opposite.

in the structure, the adjusting cylinder, the first screw rod and the second screw rod form a screw rod nut mechanism, when the telescopic mechanism adopts the screw rod nut mechanism, because the screw thread turning directions of the first screw rod and the second screw rod are opposite, the first screw rod and the second screw rod move towards different directions relative to the adjusting cylinder through manually rotating the adjusting cylinder, so that the movable beam slides relative to the fixed beam, and the distance between the two arch centering clamping mechanisms can be conveniently adjusted.

The arch center clamping mechanism comprises a support plate vertically arranged on the movable beam, an arch center gripper is arranged on the support plate, and an opening and closing mechanism for controlling the opening and closing of the arch center gripper is further arranged on the movable beam.

the utility model discloses in, the bow member tongs is used for snatching the articulated shaft on the folding bow member, and the backup pad is then supported on the articulated shaft. So that the hinged shaft is just positioned at the grabbing position of the arch frame gripper.

the arch frame gripper comprises a driving gripper and a driven gripper, the driving gripper is hinged to the supporting plate through a driving shaft, and the driven gripper is hinged to the supporting plate through a driven shaft; the opening and closing mechanism comprises a clamping oil cylinder, a driving gear and a driven gear; the driving gear and the driven gear are meshed with each other and are correspondingly arranged on the driving shaft and the driven shaft; one end of the clamping oil cylinder is hinged with the driving gripper, and the other end of the clamping oil cylinder is hinged with the movable beam.

In the structure, the clamping oil cylinder drives the driving gripper to rotate, meanwhile, the driving gear rotates due to the fact that the driving gear is coaxial with the driving gripper, and the driven gear rotates along with the driving gear and the driven gear due to the fact that the driving gear is meshed with the driven gear to drive the coaxial driven gripper to rotate, so that the driving gripper and the driven gripper are closed or opened, and the steel arch is gripped or loosened.

Furthermore, the arch support frame is hinged to the main beam, a support frame pitching mechanism is arranged between the main beam and the arch support frame, and the support frame pitching mechanism drives the arch support frame to pitch relative to the main beam.

Because the arch support frame is hinged on the main beam, the arch support frame can rotate around the main beam, so that the folding arch can be unfolded or folded, and the requirements of transportation and installation of the arch under different environments of the tunnel can be flexibly met.

Furthermore, the supporting frame pitching mechanism is a supporting frame pitching oil cylinder, one end of the supporting frame pitching oil cylinder is hinged to the main beam, and the other end of the supporting frame pitching oil cylinder is hinged to the supporting frame;

The bow member support frame is kept away from girder one end and is provided with the baffle, the baffle is used for restricting the steel bow member and removes along girder length direction.

Furthermore, the arch center clamping device is arranged on the main arm through an angle adjusting mechanism; the angle adjusting mechanism comprises a girder rotating mechanism, a girder lifting mechanism and a girder pitching mechanism; the main beam rotating mechanism is arranged below the main beam and used for driving the main beam to rotate, the main beam lifting mechanism is arranged below the main beam rotating mechanism and used for driving the main beam to lift, the main beam lifting mechanism is arranged on the main beam pitching mechanism, the main beam pitching mechanism is arranged on the main arm, and the main beam pitching mechanism drives the main beam to pitch relative to the main arm.

Furthermore, the lifting mechanism comprises a fixed support and a movable support, the upper end of the movable support is fixedly connected with the rotating mechanism, and the lower end of the movable support is connected with the fixed support in a sliding manner; a lifting driving device is arranged between the fixed support and the movable support, and the lifting driving device drives the movable support to move up and down along the vertical direction relative to the fixed support; the fixed support is arranged on the main arm through a girder pitching mechanism.

Furthermore, a lifting device is also arranged on the arch frame clamping device; the lifting device comprises a hoisting motor arranged below the main beam and a pulley block arranged below the arch support frame, and hoisting ropes are wound on the hoisting motor and the pulley block. And the main beam or the fixed support or the movable support is provided with an inclination angle sensor.

due to the structure, when the arch frame is unfolded, the lifting rope can pull the end part of the folding arch frame, and then the folding arch frame is slowly unfolded under the control of the winch, so that the danger caused by sudden opening of the two ends of the folding arch frame under the action of gravity is avoided. Meanwhile, the lifting device can be used for lifting the arch frame, the net piece, other equipment and parts, and is convenient for constructors to obtain needed articles at high altitude. And the inclination angle sensing can detect the inclination angle state of the main beam, so that the main beam is controlled by the main beam pitching mechanism and always kept in a horizontal state.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

the utility model discloses a two-stage every single move can be carried out to the cantilever crane, consequently the utility model discloses a every single move angle of cantilever crane is bigger than the every single move angle of current cantilever crane. Meanwhile, the pitching mechanism of the main arm is matched with the link mechanism through the oil cylinder, so that the pitching angle of the main arm can be further increased. The utility model discloses a cantilever crane can be nimble, convenient lift bow member in the tunnel.

The utility model discloses, come to press from both sides tight folding arch centering through two bow member fixture, can realize folding bow member safety and stability's expansion at two bow member support frames of cooperation and hoist mechanism, can effectual assurance folding steel bow member erect the safety of in-process.

The distance between the two arch clamping mechanisms is adjustable, so that the arch clamping device can clamp arches with different widths, and the application range of the arch clamping device is enlarged.

the arch center support frame is hinged to the main beam, the arch center support frame can rotate around the main beam, the folding arch center can be unfolded or folded, and the transportation and installation requirements of the arch center in different environments of the tunnel are flexibly met.

drawings

Fig. 1 and 2 are diagrams of a boom pitching state in the prior art;

FIGS. 3-5 are overall structural views of the present invention;

Fig. 6-8 are schematic views of the boom pitch angle of the present invention being less than 90 °;

Fig. 9 is a schematic view of the boom pitch angle of the present invention being greater than 90 °;

FIGS. 10-12 are perspective views of the arch clamping device;

FIG. 13 is a left side view of the arch clamping device;

Figures 14-15 are front views of the arch clamping device;

FIGS. 16-17 are schematic views of the collapsed arch being clamped to the arch clamping unit;

Fig. 18-19 are enlarged partial views of the arch clamping mechanism clamped to the hinge axis of the folding arch.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

in order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The arch clamping arm frame of the utility model is mainly suitable for a folding arch, as shown in fig. 16-17, the folding arch comprises a left top arch section 1-1, a right top arch section 1-2, a left arch section one 2-1, a left arch section two 3-1, a right arch section one 2-2 and a right arch section two 3-2; wherein, the left top arch section 1-1 is hinged with the right top arch section 1-2, the left arch section I2-1 is hinged with the left top arch section II 3-1, the left arch section I2-1 is hinged with the left top arch section 1-1, the right arch section I2-2 is hinged with the right arch section II 3-2, and the right arch section I2-2 is hinged with the right top arch section 1-2. The arch sections are hinged together through a hinge shaft, for example, the left top arch section 1-1 and the right top arch section 1-2 are hinged together through a hinge shaft 4-1.

The utility model discloses an arch center clamping arm support, which comprises an arm support I and an arch center clamping device II; the arm support I comprises a rotating part 1, a pitching part 2 and a main arm 3; one end of the pitching part 2 is hinged with the rotating part 1, and the other end of the pitching part is hinged with the rear end of the main arm 3; a pitching mechanism 7 is arranged between the rotating part 1 and the pitching part 2, and the pitching mechanism 7 drives the pitching part 2 to pitch in the vertical direction relative to the rotating part 1; a main arm pitching mechanism is arranged between the pitching part 2 and the main arm 3, the main arm pitching mechanism drives the main arm 3 to pitch in the vertical direction relative to the pitching part 2, and the main arm 3 is a telescopic arm. The arch center clamping device II comprises a main beam, arch center clamping mechanisms are arranged at two ends of the main beam, and arch center supporting frames 12 are arranged on two sides of the main beam. The main beam is arranged at the front end of the main arm through an angle adjusting mechanism.

When the arch center clamping device II is used for clamping the folding steel arch center, the folding arch center can be clamped in a mode shown in figures 16-17. When the folding arch is arranged on the arch clamping device II, the arch clamping mechanism is used for clamping the articulated shafts 4-1 of the left top arch section 1-1 and the right top arch section 1-2; the arch support frame 12 is supported below the left top arch section 1-1 and the right top arch section 1-2.

The pitching mechanism 7 is a pitching oil cylinder, one end of the pitching oil cylinder is hinged on the rotating part 1, and the other end of the pitching oil cylinder is hinged on the pitching part 2.

As shown in fig. 6-8, one end of the pitching part 2 is hinged to the back of the rotating part 1, the hinge point is located in the middle of the rotating part 1, and the piston rod of the pitching cylinder is hinged to the rotating part 1 and is close to the lower part of the rotating part 1; the cylinder body of the pitching oil cylinder is hinged at the lower part of the pitching part 2 and is close to the other end of the pitching part 2.

The main arm pitching mechanism comprises a first connecting rod 6, a second connecting rod 5 and a main arm pitching oil cylinder 4; one end of the first connecting rod 6 is hinged to the pitching part 2, the other end of the first connecting rod is hinged to one end of the second connecting rod 5, and the other end of the second connecting rod 5 is hinged to the main arm 3; the pitching part 2, the first connecting rod 6, the second connecting rod 5 and the main arm 3 form a four-bar linkage; one end of the main arm pitching oil cylinder 4 is hinged to the second connecting rod 5, and the other end of the main arm pitching oil cylinder is hinged to the main arm 3.

As shown in fig. 6-8, one end of the main arm 3 is hinged to the pitching part 2, and is close to the upper part of the pitching part 2, one end of the first connecting rod 6 is hinged to the pitching part 2, the hinged point is located below the hinged point of the main arm 3 and the pitching part 2, the other end of the first connecting rod 6 is hinged to one end of the second connecting rod 5, the other end of the second connecting rod 5 is hinged to the main arm 3, the cylinder body of the main arm pitching cylinder 4 is hinged to the second connecting rod 5, and the piston rod of the main arm pitching cylinder 4.

Meanwhile, in order to enable the main arm 3 to have the largest pitch angle, the hinged point of the pitch cylinder on the connecting rod two 5 is overlapped with the hinged point of the connecting rod one 6 on the connecting rod two 5.

Since the main arm pitch mechanism is constituted by the main arm pitch cylinder 4 and the link mechanism in cooperation, the pitch angle of the main arm 3 can be made larger. As shown in fig. 6 and 9, the every single move angle of main arm 3 can carry out the every single move in 0~180, every single move in 0~90 for current main arm 3, the utility model discloses the flexibility ratio of cantilever crane I is better, can be nimble, convenient lift the bow member in the tunnel.

In practical use, the main arm pitching mechanism can also drive the main arm to pitch by only adopting a main arm pitching cylinder, for example, one end of the main arm pitching cylinder is hinged on the pitching part 2, and the other end is hinged on the main arm 3.

the rotating part 1 is hinged on the arm support mounting platform 9; a horizontal rotating mechanism 8 is arranged between the arm support mounting platform 9 and the rotating part 1, and the horizontal rotating mechanism 8 drives the rotating part 1 to horizontally rotate relative to the arm support mounting platform 9. The arm support mounting platform 9 can be a trolley, a fixed support or a lifting frame and the like.

The horizontal rotating mechanism is a horizontal oil cylinder, one end of the horizontal oil cylinder is hinged on the arm support mounting platform 9, and the other end of the horizontal oil cylinder is hinged on the rotating part 1.

As shown in fig. 6-8, the front of the rotating part 1 is hinged to the arm support mounting platform 9, and can rotate horizontally relative to the arm support mounting platform 9, the cylinder body of the horizontal oil cylinder is hinged to the arm support mounting platform 9, and the piston rod is hinged to the side of the rotating part 1.

The distance of the arch center clamping mechanisms at two ends of a main beam of the arch center clamping device II in the axial direction of the main beam is adjustable to adapt to the widths of different arch centers, so that the arch center clamping mechanisms are clamped on the hinge shafts 4-1 at the left side and the right side of the left top arch section 1-1 and the right top arch section 1-2 of the folding arch center.

In order to enable the distance between the arch center clamping mechanisms to be adjustable, the main beam is a telescopic beam.

The main beam comprises a fixed beam 10 and movable beams 15 arranged at two ends of the fixed beam 10 in a sliding manner, and arch frame clamping mechanisms are arranged on the movable beams 15; a telescopic mechanism 16 is arranged between the fixed beam 10 and the movable beam 15, and the telescopic mechanism 16 is used for driving the movable beam 15 to slide along the axis direction of the fixed beam 10.

the movable beams 15 at the two ends of the fixed beam 10 are inserted into the fixed beam 10, slide in the fixed beam 10 along the axial direction of the fixed beam 10, extend out of or are inserted into the fixed beam 10, and the distance between the two arch clamping mechanisms is adjusted.

The telescopic mechanism 16 is arranged inside or outside the fixed beam 10 and the movable beam 15, the telescopic mechanism 16 is an oil cylinder, one end of the oil cylinder is hinged with the fixed beam 10, and the other end of the oil cylinder is hinged with the movable beam 15; or the telescopic mechanism 16 is arranged outside the fixed beam 10 and the movable beam 15, the telescopic mechanism 16 comprises a regulating cylinder, a first screw rod and a second screw rod, one end of the first screw rod is hinged with the fixed beam 10, the other end of the first screw rod is in threaded connection with one end of the regulating cylinder, one end of the second screw rod is in threaded connection with the other end of the regulating cylinder, the other end of the second screw rod is hinged with the movable beam 15, and the thread turning directions of the first screw rod and the second screw rod are opposite; because the screw thread turning directions of the first screw rod and the second screw rod are opposite, when the adjusting cylinder is manually rotated, the first screw rod and the second screw rod move in different directions, and further the movable beam 15 is driven to extend out of or be inserted into the fixed beam 10.

As shown in fig. 10 to 12, the arch clamping mechanisms on the two movable beams 15 are the same, the arch clamping mechanisms include supporting plates 19 vertically disposed on the two movable beams 15, arch grippers are disposed on the supporting plates 19, and opening and closing mechanisms for controlling the opening and closing of the arch grippers are further disposed on the movable beams 15.

The arch frame gripper comprises a driving gripper 20 and a driven gripper 23, the driving gripper 20 is hinged to the supporting plate 19 through a driving shaft, and the driven gripper 23 is hinged to the supporting plate 19 through a driven shaft; the opening and closing mechanism comprises a clamping oil cylinder 21, a driving gear 22 and a driven gear; the driving gear 22 and the driven gear are meshed with each other and are correspondingly arranged on the driving shaft and the driven shaft; one end of the clamping oil cylinder 21 is hinged with the active gripper 20, and the other end is hinged with the movable beam 15.

The support plate 19 comprises an inner support plate 19 and an outer support plate 19 which are arranged on the movable beam 15; the inner supporting plate 19 and the outer supporting plate 19 are arranged at intervals along the axial direction of the movable beam 15, the interval between the inner supporting plate 19 and the outer supporting plate 19 is larger than or equal to the width of I-steel of the arch centering, so that the I-steel on the edge of the arch centering is positioned between the inner supporting plate 19 and the outer supporting plate 19, the arch centering is limited to move along the axial direction of the main beam, and the clamping stability of the arch centering is ensured. As shown in fig. 10-12, the arch grips are disposed on the outer support plate 19, the arch grips are located on the inner side of the outer support plate 19, and the driving gear 22 and the driven gear are located on the outer side of the outer support plate 19. Meanwhile, a gear housing 24 is arranged outside the driving gear 22 and the driven gear.

The top of the supporting plate 19 is provided with a positioning opening. The articulated shaft on the folding arch is positioned in the positioning opening to position the arch and ensure the stability of the arch clamping. As shown in fig. 10-12 and 18-19, the positioning hole is used for placing the hinge shaft 4-1 of the left top arch section 1-1 and the hinge shaft 4-1 of the right top arch section 1-2, limiting the movement of the hinge shaft 4-1, positioning the hinge shaft 4-1 at the arch grip, and enabling the arch grip to stably clamp the hinge shaft 4-1 hinge of the left top arch section 1-1 and the hinge shaft 4-1 hinge of the right top arch section 1-2.

The arch support frame 12 is hinged to the main beam, a support frame pitching mechanism 14 is arranged between the main beam and the arch support frame 12, and the support frame pitching mechanism 14 drives the arch support frame 12 to pitch relative to the main beam.

The support frame pitching mechanism 14 is a support frame pitching oil cylinder, one end of the support frame pitching oil cylinder is hinged on the main beam, and the other end of the support frame pitching oil cylinder is hinged on the support frame.

the end, far away from the girder, of the arch support frame 12 is provided with a baffle 11, and the baffle 11 is used for limiting the movement of the steel arch along the length direction of the girder.

As shown in fig. 10-12, the arch support frame 12 is of a frame structure, and includes three longitudinal rods, a long cross rod and a short cross rod, one end of each longitudinal rod is hinged to the fixed beam 10, the other end of each longitudinal rod is fixedly connected to the long cross rod, and the short cross rod is connected to the middle of each cross rod; the two ends of the long cross rod are provided with the baffles 11, each end is provided with the inner baffle 11 and the outer baffle 11 at intervals, the distance between the inner baffle 11 and the outer baffle 11 is larger than or equal to the width of the I-steel of the arch centering, so that the I-steel on the edge of the arch centering is positioned between the inner baffle 11 and the outer baffle 11, the movement of the arch centering along the axis direction of the main beam is limited, and the clamping stability of the arch centering is ensured.

The main beam is arranged on the main arm through an angle adjusting mechanism, and the angle adjusting mechanism comprises a main beam rotating mechanism 26, a main beam lifting mechanism and a main beam pitching mechanism 27; the main beam rotating mechanism is arranged below the main beam and used for driving the main beam to rotate, the main beam lifting mechanism is arranged below the main beam rotating mechanism and used for driving the main beam to lift, the main beam lifting mechanism is arranged on the main beam pitching mechanism 27, the main beam pitching mechanism 27 is arranged on the main arm, and the main beam pitching mechanism 27 drives the main beam to pitch relative to the main arm.

The main beam rotating mechanism 26 is a rotating oil cylinder or a rotating motor; the girder pitching mechanism 27 is a rotary cylinder or a rotary motor.

The lifting mechanism comprises a fixed support 18 and a movable support 17, the upper end of the movable support 17 is fixedly connected with the rotating mechanism 26, and the lower end of the movable support 17 is connected with the fixed support 18 in a sliding manner; a lifting driving device is arranged between the fixed support 18 and the movable support 17, and the lifting driving device drives the movable support 17 to move up and down along the vertical direction relative to the fixed support 18; the fixed support 18 is arranged on the main arm by a girder pitch mechanism 27.

The movable support 17 is inserted into the fixed support 18 and moves up and down in the vertical direction in the fixed support 18.

The lifting driving device is arranged inside or outside the fixed support 18 and the movable support 17, the lifting driving device is a lifting oil cylinder, one end of the lifting oil cylinder is connected with the movable support 17, and the fixed support 18 at the other end of the lifting oil cylinder is connected.

As shown in fig. 10-13, the fixed support 18 comprises left and right fixed supports 18, and the movable support 17 comprises left and right movable supports 17; the middle parts of the left and right fixed supports 18 are fixedly connected together through a connecting beam, the tops of the left and right movable supports 17 are connected together through a top beam, and the rotating mechanism 26 is fixedly arranged on the top beam; the left and right movable supports 17 are inserted into the left and right fixed supports 18, respectively, and are extended and retracted in the left and right fixed supports 18.

And a lifting device is further arranged on the arch frame clamping device II. The lifting device can be used for lifting the arch frame, the net piece, other equipment and parts, and is convenient for constructors to obtain required articles at high altitude.

The lifting device comprises a hoisting motor 25 arranged below the main beam and a pulley block 13 arranged below the arch support frame 12, and a lifting rope is wound on the hoisting motor 25 and the pulley block 13. And the main beam or the fixed support or the movable support is provided with an inclination angle sensor.

When the arch is unfolded, the lifting rope can pull the first arch section 2-1 and the first right arch section 2-2 or the second left arch section 3-1 and the second right arch section 3-2, and then the lifting rope is slowly released through the winch to open the arch, so that the danger caused by sudden opening of the two ends of the folding arch under the action of gravity is avoided. Meanwhile, the lifting device can be used for lifting the arch frame, the net piece, other equipment and parts, and is convenient for constructors to obtain needed articles at high altitude. And the inclination angle sensing can detect the inclination angle state of the main beam, so that the main beam is controlled by the main beam pitching mechanism and always kept in a horizontal state.

the above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. An arch center clamping arm support is characterized in that: the device comprises an arm support (I) and an arch frame clamping device (II);

The arm support (I) comprises a rotating part (1) which rotates horizontally and a pitching part (2) which pitches in the vertical direction

And a main arm (3) which is vertically tilted; one end of the pitching part (2) is hinged to the rotating part (1), and the other end of the rotating part is hinged to the main arm (3); an arch frame clamping device (II) is arranged at the other end of the main arm (3); the arch frame clamping device (II) comprises a main beam arranged on a main arm, arch frame clamping mechanisms are arranged at two ends of the main beam, and arch frame supporting frames (12) are arranged on two sides of the main beam.

2. the arch clamping boom of claim 1, wherein: the rotating part (1) is hinged on the arm support mounting platform (9); a horizontal rotating mechanism (8) is arranged between the arm support mounting platform (9) and the rotating part (1), and the horizontal rotating mechanism (8) drives the rotating part (1) to horizontally rotate relative to the arm support mounting platform (9);

A pitching mechanism (7) is arranged between the rotating part (1) and the pitching part (2), and the pitching mechanism (7) drives the pitching part (2) to pitch in the vertical direction relative to the rotating part (1);

A main arm pitching mechanism is arranged between the pitching part (2) and the main arm (3), and the main arm pitching mechanism drives the main arm (3) to pitch in the vertical direction relative to the pitching part (2).

3. The arch clamping boom of claim 2, wherein: the horizontal rotating mechanism (8) is a horizontal oil cylinder, one end of the horizontal oil cylinder is hinged to the arm support mounting platform (9), and the other end of the horizontal oil cylinder is hinged to the rotating part (1);

The pitching mechanism (7) is a pitching oil cylinder, one end of the pitching oil cylinder is hinged to the pitching part (2), and the other end of the pitching oil cylinder is hinged to the rotating part (1);

The main arm pitching mechanism is a main arm pitching oil cylinder, one end of the main arm pitching oil cylinder is hinged to the rotating part (1), and the other end of the main arm pitching oil cylinder is hinged to the main arm (3); or the main arm pitching mechanism comprises a first connecting rod (6), a second connecting rod (5) and a main arm pitching oil cylinder (4); one end of the first connecting rod (6) is hinged to the pitching part (2), the other end of the first connecting rod is hinged to one end of the second connecting rod (5), and the other end of the second connecting rod (5) is hinged to the main arm (3); the pitching part (2), the connecting rod I (6), the connecting rod II (5) and the main arm (3) form a four-bar linkage; one end of the main arm pitching oil cylinder (4) is hinged to the second connecting rod (5), and the other end of the main arm pitching oil cylinder is hinged to the main arm (3).

4. The arch clamping boom according to any one of claims 1 to 3, wherein: the distance of the arch center clamping mechanisms at the two ends of the main beam in the axial direction of the main beam is adjustable.

5. the arch clamping boom of claim 4, wherein: the main beam comprises a fixed beam (10) and movable beams (15) which are arranged at two ends of the fixed beam (10) in a sliding manner, and an arch center clamping mechanism is arranged on each movable beam (15); a telescopic mechanism (16) is arranged between the fixed beam (10) and the movable beam (15), and the telescopic mechanism (16) is used for driving the movable beam (15) to slide along the axis direction of the fixed beam (10).

6. The arch clamping boom of claim 5, wherein: the telescopic mechanism (16) is arranged inside or outside the fixed beam (10) and the movable beam (15), the telescopic mechanism (16) is an oil cylinder, one end of the oil cylinder is hinged with the fixed beam (10), and the other end of the oil cylinder is hinged with the movable beam (15);

Or telescopic machanism (16) sets up the outside at fixed beam (10) and walking beam (15), telescopic machanism (16) are including adjusting a section of thick bamboo, lead screw one and lead screw two, a lead screw one end is articulated with fixed beam (10), the other end and the one end threaded connection of adjusting a section of thick bamboo, two one ends of lead screw and the other end threaded connection of adjusting a section of thick bamboo, the other end is articulated with walking beam (15), the screw of lead screw one and lead screw two revolves to opposite.

7. The arch clamping boom according to claim 1, 2, 3, 5 or 6, characterized in that: the arch center clamping mechanism comprises a supporting plate (19) vertically arranged on the movable beam (15), an arch center gripper is arranged on the supporting plate (19), and an opening and closing mechanism for controlling the arch center gripper to open and close is further arranged on the movable beam (15).

8. The arch clamping boom of claim 7, wherein: the arch frame gripper comprises a driving gripper (20) and a driven gripper (23), the driving gripper (20) is hinged to the supporting plate (19) through a driving shaft, and the driven gripper (23) is hinged to the supporting plate (19) through a driven shaft; the opening and closing mechanism comprises a clamping oil cylinder (21), a driving gear (22) and a driven gear; the driving gear (22) and the driven gear are meshed with each other and are correspondingly arranged on the driving shaft and the driven shaft; one end of the clamping oil cylinder (21) is hinged with the active gripper (20), and the other end of the clamping oil cylinder is hinged with the movable beam (15).

9. the arch clamping boom of claim 1, wherein: the arch support frame (12) is hinged to the main beam, a support frame pitching mechanism (14) is arranged between the main beam and the arch support frame (12), and the support frame pitching mechanism (14) drives the arch support frame (12) to pitch relative to the main beam.

10. The arch clamping boom of claim 9, wherein: the supporting frame pitching mechanism (14) is a supporting frame pitching oil cylinder, one end of the supporting frame pitching oil cylinder is hinged to the main beam, and the other end of the supporting frame pitching oil cylinder is hinged to the supporting frame;

the arch support frame (12) is kept away from girder one end and is provided with baffle (11), baffle (11) are used for restricting the steel arch and remove along girder length direction.

11. The arch clamping boom of claim 1, wherein: the arch center clamping device (II) is arranged on the main arm (3) through an angle adjusting mechanism; the angle adjusting mechanism comprises a main beam rotating mechanism (26), a main beam lifting mechanism and a main beam pitching mechanism (27); the main beam lifting mechanism is arranged below the main beam rotating mechanism and used for driving the main beam to rotate, the main beam lifting mechanism is arranged below the main beam rotating mechanism and used for driving the main beam to lift, the main beam lifting mechanism is arranged on the main beam pitching mechanism (27), the main beam pitching mechanism (27) is arranged on the main arm, and the main beam pitching mechanism (27) drives the main beam to pitch relative to the main arm.

12. The arch clamping boom of claim 11, wherein: the lifting mechanism comprises a fixed support (18) and a movable support (17), the upper end of the movable support (17) is fixedly connected with the rotating mechanism (26), and the lower end of the movable support is connected with the fixed support (18) in a sliding manner; a lifting driving device is arranged between the fixed support (18) and the movable support (17), and the lifting driving device drives the movable support (17) to move up and down along the vertical direction relative to the fixed support (18); the fixed support (18) is arranged on the main arm through a girder pitching mechanism (27).

13. The arch clamping boom of claim 1, wherein: the arch center clamping device (II) is also provided with a lifting device; the lifting device comprises a hoisting motor (25) arranged below the main beam and a pulley block (13) arranged below the arch support frame (12), a lifting rope is wound on the hoisting motor (25) and the pulley block (13), and an inclination angle sensor is arranged on the main beam or the fixed support (18) or the movable support (17).