CN113636471A

CN113636471A - Portal crane with double-support-rod cooperative buffering structure

Info

Publication number: CN113636471A
Application number: CN202111210051.3A
Authority: CN
Inventors: 王志炎; 于晓菲; 葛新波; 陈鑫袆
Original assignee: Nantong Cosco Heavy Industry Co ltd
Current assignee: Nantong Cosco Shipping Heavy Industry Equipment Co ltd
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2021-11-12
Anticipated expiration: 2041-10-18
Also published as: CN113636471B

Abstract

The invention discloses a portal crane with a double-support-rod cooperative buffering structure, belonging to the field of cranes, and the portal crane with the double-support-rod cooperative buffering structure comprises a pair of portal supports, a horizontal guide rail is connected between the pair of portal supports, two electric sliding tables are slidably connected on the horizontal guide rail, each electric sliding table comprises a shell, the lower ends of the two shells are respectively and rotatably connected with a hinged shaft, a main suspender and a cooperative suspender are respectively connected on the hinged shafts on the two electric sliding tables, a reluctance damper matched with the hinged shaft is fixedly connected on the shell, and a hoisting device main body is fixedly connected at the lower end of the main suspender, so that the hoisting arm can be subjected to micro-displacement after the electric sliding tables are anchored, the hoisting arm still has strong stability when working in strong wind, and can be subjected to buffering protection by the cooperative suspender when being subjected to strong wind, the suspension arm is not easy to shake to a large extent under the action of strong wind.

Description

Portal crane with double-support-rod cooperative buffering structure

Technical Field

The invention relates to the field of cranes, in particular to a portal crane with a double-strut cooperative buffering structure.

Background

Gantry cranes have been developed with the development of harbour utilities. In 1890, a fixed, rotatable jib-type crane with invariable amplitude was first mounted on a running half-portal spanning over a narrow quay, and became an early semi-portal crane for port use. Along with the increase of the width of the wharf, the portal crane and the half portal crane are developed in parallel, and a pitching arm support and a horizontal amplitude-changing system are generally adopted. After world war two times, the portal crane for harbor has developed rapidly for the convenience of multiple cranes to work side by side the same ship, has generally adopted the rotating column portal crane that the rotating part links to each other with the stand (in the development process, portal crane still progressively popularizes and applies to the berth and hydropower station building site etc. that the operating condition is close to the harbour.

At present, some portal cranes are large in span, and crane running mechanisms are mostly driven respectively, so that the situation that the crane runs obliquely to increase resistance and even accidents is avoided. The crane trolley of the gantry crane runs on the bridge, and some crane trolleys are cantilever cranes. However, the gantry crane is easily influenced by the wind force of the harbor when lifting objects at the harbor, so that the steel wire rope on the crane shakes to cause an unstable condition.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide the portal crane with the double-strut cooperative buffering structure, and the scheme can realize the micro-displacement of the suspension arm after the electric sliding table is anchored, so that the suspension arm still has stronger stability when working in strong wind weather, and can buffer and protect the suspension arm through the cooperative suspension rod when being acted by strong wind, so that the suspension arm is not easy to shake to a larger extent under the action of strong wind.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A horizontal guide rail is connected between a pair of the door seat supports, two electric sliding tables are connected on the horizontal guide rail in a sliding manner, each electric sliding table comprises a shell, two pairs of guide wheels matched with the horizontal guide rail are rotatably connected on the inner side of the shell, the lower ends of the two shells are respectively and rotatably connected with a hinged shaft, a main suspender and a cooperative suspender are respectively connected on the hinged shafts on the two electric sliding tables, the main suspender comprises a pull rod main body, an anchoring block is fixedly connected at the lower end of the pull rod main body, a hoisting device main body is fixedly connected at the lower end of the anchoring block, the cooperative suspender comprises a sleeve, an electric pull rod is slidably connected in the sleeve, a pull ring is fixedly connected on the power output end of the electric pull rod, a fixed seat is connected between the pull ring and the outer wall of the pull rod main body, and a vibration alarm matched with the fixed seat is fixedly connected on the outer wall of the pull rod main body, this scheme can realize carrying out the micrometric displacement to the davit behind the electronic slip table of anchor, makes the davit still have stronger stability in the during operation under the strong wind weather, and when receiving the strong wind effect, the accessible is protected the davit in coordination with the jib buffering, makes the davit be difficult for producing rocking by a relatively large margin under the strong wind effect.

Further, the inboard fixedly connected with and the guide pulley assorted pivot of casing, it has the anchor pole to peg graft in the pivot, horizontal guide rail's inner wall upper berth is equipped with the stagnation area, the stagnation area includes the fixed band, sliding connection has the floating band in the fixed band, the middle part fixedly connected with and the floating band assorted damping strip of fixed band, the anchor pole be close to the one end in stagnation area seted up with damping strip assorted triangle slot, install in the casing with anchor pole assorted electric putter, the floating band is pushed down to the anchor pole when electronic slip table needs the location, makes triangle slot and damping strip joint on the anchor pole to make the guide pulley dead by the lock, electronic slip table is anchored.

Further, be connected with the connecting axle between pull ring and the fixing base, the vibration alarm include with connecting axle assorted fixed lid, the inner wall upper berth of fixed lid is equipped with the elasticity and encircles the membrane, the epaxial a plurality of evenly distributed's of fixedly connected with piezoelectricity diaphragm of elasticity ring, install in the pull rod main part with piezoelectricity diaphragm assorted treater, the treater with in coordination jib signal connection, when rocking in coordination the jib, the connecting axle exerts pressure to the elasticity ring membrane, through piezoelectricity diaphragm detection pressure size, according to the spiale to elasticity ring membrane pressure size of exerting pressure, make in coordination the jib brake buffer exert same thrust and give the main jib to this rocking that reduces the main jib.

Further, including a control system, control system is including installing the controller on 2, electronic slip table, main jib, jib and vibration alarm all with controller electric connection in coordination.

Furthermore, a pair of pull rods is connected between the top end of the door seat support and the horizontal guide rail, and a distribution box matched with the controller is installed on the door seat support.

Furthermore, a buffer is connected between the electric pull rod and the bottom end of the inner wall of the sleeve, the buffer comprises a hydraulic cylinder, a compression spring is fixedly connected to the power output end of the hydraulic cylinder, and one end, far away from the hydraulic cylinder, of the compression spring is fixedly connected with the electric pull rod.

Furthermore, a pair of mounting grooves is formed in the outer wall of the electric push rod, the mounting grooves are internally and fixedly connected with electric bayonet locks, and a plurality of clamping grooves matched with the output ends of the electric bayonet locks are formed in the inner wall of the sleeve.

Furthermore, a magnetic resistance damper matched with the hinge shaft is fixedly connected to the shell.

A portal crane with a double-strut cooperative buffering structure comprises the following use processes:

s1, firstly, driving a pair of electric sliding tables to move to a working position;

s2, controlling the lifting device main body at the bottom end of the main suspender to perform lifting work;

s3, stabilizing the main suspender through the cooperative suspender during hoisting work, so that the main suspender is not easy to shake during hoisting heavy objects;

and S4, when the hoisting device main body hoists the object to the lifting limit or needs to slowly lift the heavy object, the technician can drive the electric sliding table connected with the cooperative suspender to move towards the direction far away from the other electric sliding table, and at the moment, the cooperative suspender pulls one end of the main suspender to obliquely lift, so that the heavy object is slowly lifted.

Further, in the step S1, the pair of electric sliding tables keep the same speed when moving, and the distance between the pair of electric sliding tables is in the range of one tenth to one half of the total length of the horizontal guide rail.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme can realize carrying out the micrometric displacement to the davit behind the electronic slip table of anchor, makes the davit still have stronger stability in the during operation under the strong wind weather, and when receiving the strong wind effect, the accessible is protected the davit in coordination with the jib buffering, makes the davit be difficult for producing rocking by a relatively large margin under the strong wind effect.

(2) The inboard fixedly connected with and the guide pulley assorted pivot of casing, it has the anchor pole to peg graft in the pivot, horizontal guide rail's inner wall upper berth is equipped with the stagnation area, the stagnation area includes the fixed band, sliding connection has the floating band in the fixed band, the anchor pole be close to the one end in stagnation area seted up with damping strip assorted triangle slot, install in the casing with anchor pole assorted electric putter, anchor pole pushes down the floating band when electronic slip table needs the location, makes triangle slot and damping strip joint on the anchor pole to make the guide pulley dead by the lock, electronic slip table is anchored.

(3) Be connected with the connecting axle between pull ring and the fixing base, the vibration alarm include with connecting axle assorted fixed lid, the inner wall upper berth of fixed lid is equipped with the elasticity and encircles the membrane, the epaxial a plurality of evenly distributed's of fixedly connected with piezoelectricity diaphragm of elasticity ring, install in the pull rod main part with piezoelectricity diaphragm assorted treater, the treater with in coordination jib signal connection, when rocking in coordination the jib, the connecting axle exerts pressure to the elasticity ring membrane, through piezoelectricity diaphragm detection pressure size, according to the spiale to elasticity ring membrane pressure size of exerting pressure, make in coordination the jib brake buffer exert same thrust and give main jib to this rocking that reduces main jib.

Drawings

FIG. 1 is a front perspective view of the present invention;

FIG. 2 is a rear perspective view of the present invention;

FIG. 3 is a schematic view of the structure at A in FIG. 2;

FIG. 4 is a front cross-sectional view of the present invention after installation of a hook;

FIG. 5 is a schematic view of the structure at B in FIG. 4;

FIG. 6 is a schematic view of the structure at C in FIG. 4;

FIG. 7 is a side cross-sectional view of the present invention;

FIG. 8 is a schematic view of the structure of FIG. 7 at D;

FIG. 9 is a partial cross-sectional view of the anchor rod of the present invention in operation;

fig. 10 is a flow chart of the use of the present invention.

The reference numbers in the figures illustrate:

1 door seat support main body, 2 horizontal guide rails, 3 electric sliding tables, 301 shell, 302 guide wheels, 303 magnetic resistance dampers, 4 main suspension rods, 401 pull rod main body, 402 anchoring blocks, 403 hoisting device main body, 5 cooperative suspension rods, 501 sleeve pipes, 502 electric pull rods, 503 pull rings, 504 fixed seats, 6 vibration alarm, 601 fixed covers, 602 elastic ring membranes, 603 piezoelectric diaphragms, 7 anchoring rods, 8 stagnation belts, 801 fixed belts, 802 floating belts and 803 damping belts.

Detailed Description

In this embodiment 1, the technical solution will be clearly and completely described in conjunction with the disclosed drawings, so that the purpose, technical solution and beneficial effects of the embodiments of the present disclosure will be more clear. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" and similar words are intended to mean that the elements or items listed before the word cover the elements or items listed after the word and their equivalents, without excluding other elements or items. "upper", "lower", "inside", "outside", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Example (b):

referring to fig. 1-4, a portal crane with a double-support-rod cooperative buffering structure comprises a pair of portal supports 1, a horizontal guide rail 2 is connected between the pair of portal supports 1, two electric sliding tables 3 are connected to the horizontal guide rail 2 in a sliding manner, each electric sliding table 3 comprises a shell 301, two pairs of guide wheels 302 matched with the horizontal guide rail 2 are rotatably connected to the inner side of each shell 301, the lower ends of the two shells 301 are respectively rotatably connected with a hinged shaft, a main suspender 4 and a cooperative suspender 5 are respectively connected to the hinged shafts of the two electric sliding tables 3, and a reluctance damper 303 matched with the hinged shaft is fixedly connected to each shell 301.

Referring to fig. 3-5, the main boom 4 includes a main body 401, an anchoring block 402 is fixedly connected to the lower end of the main body 401, a hoisting apparatus main body 403 is fixedly connected to the lower end of the anchoring block 402, the cooperative boom 5 includes a casing 501, an electric pull rod 502 is slidably connected to the casing 501, a pair of mounting grooves is formed on the outer wall of the electric push rod 502, electric locking pins are fixedly connected to the pair of mounting grooves, a plurality of locking grooves are formed on the inner wall of the casing 501, a buffer is connected between the electric pull rod 502 and the bottom end of the inner wall of the casing 501, the buffer includes a hydraulic cylinder, a compression spring is fixedly connected to the power output end of the hydraulic cylinder, one end of the compression spring, which is far away from the hydraulic cylinder, is fixedly connected to the electric pull rod 502, the buffer can increase the compression amount of the compression spring by the action of the hydraulic cylinder, so that the buffering effect is strengthened when the electric pull rod 502 is pushed inwards, when the electric pull rod 502 is stretched outwards, the electric pull rod 502 actively drives the output end to contract inwards to counteract the outward pulling force, when the main suspender 4 tends to swing left and right, the main suspender 4 can be ensured to be vertical and stable by providing a reverse acting force in cooperation with the suspender 5, the power output end of the electric pull rod 502 is fixedly connected with a pull ring 503, a fixed seat 504 is connected between the pull ring 503 and the outer wall of the pull rod main body 401, and a vibration alarm 6 matched with the fixed seat 504 is fixedly connected to the outer wall of the pull rod main body 401;

referring to fig. 3-6, a connecting shaft is connected between the pull ring 503 and the fixing base 504, the vibration alarm 6 includes a fixing cover 601 matching with the connecting shaft, an elastic ring membrane 602 is laid on the inner wall of the fixing cover 601, a plurality of piezoelectric membranes 603 uniformly distributed are fixedly connected to the elastic ring membrane 602, a processor matching with the piezoelectric membranes 603 is installed in the pull rod main body 401, the processor is in signal connection with the cooperative suspension rod 5, when the cooperative suspension rod 5 shakes, the connecting shaft applies pressure to the elastic ring membrane 602, the pressure is detected by the piezoelectric membranes 603, and the pressure is applied to the elastic ring membrane 602 according to the connecting shaft, so that the brake buffer in the cooperative suspension rod 5 applies the same thrust to the main suspension rod 4, thereby reducing the shake of the main suspension rod 4.

Referring to fig. 8-9, a rotating shaft matched with the guide wheel 302 is fixedly connected to the inner side of the housing 301, an anchoring rod 7 is inserted into the rotating shaft, a stagnation belt 8 is laid on the inner wall of the horizontal guide rail 2, the stagnation belt 8 includes a fixing belt 801, a floating belt 802 is slidably connected in the fixing belt 801, a damping strip 803 matched with the floating belt is fixedly connected to the middle of the fixing belt 801, a triangular slot matched with the damping strip 803 is formed in one end, close to the stagnation belt 8, of the anchoring rod 7, an electric push rod matched with the anchoring rod 7 is installed in the housing 301, the anchoring rod 7 presses down the floating belt 802 when the electric slipway 3 needs to be positioned, the triangular slot in the anchoring rod 7 is clamped with the damping strip 803, the guide wheel 302 is locked, and the electric slipway 3 is anchored.

The utility model provides a high pedestal jib crane with two poles buffer structure in coordination, includes a control system, and control system is including installing the controller on 2, and electronic slip table 3, main jib 4, 5 and the vibration alarm 6 all with controller electric connection in coordination. A pair of pull rods is connected between the top end of the door seat support 1 and the horizontal guide rail 2, and a distribution box matched with the controller is installed on the door seat support 1.

s1, firstly, driving the pair of electric sliding tables 3 to move to the working position, keeping the same speed when the pair of electric sliding tables 3 move, and enabling the distance range between the pair of electric sliding tables 3 to be one tenth to one half of the total length of the horizontal guide rail 2;

s2, the lifting operation is performed by controlling the lifting device main body 403 at the bottom end of the main boom 4;

s3, stabilizing the main suspender 4 through the cooperative suspender 5 during hoisting work, so that the main suspender 4 is not easy to shake during hoisting heavy objects;

s4, when the main body 403 lifts the object to the limit of ascending or needs to slowly lift the heavy object, the technician can drive the electric sliding platform 3 connected to the cooperative boom 5 to move in a direction away from the other electric sliding platform 3, and at this time, the cooperative boom 5 pulls one end of the main boom 4 to ascend in an inclined manner, so as to slowly lift the heavy object.

This scheme can realize carrying out the micrometric displacement to the davit behind electronic slip table 3 of anchor, makes the davit still have stronger stability at the during operation under the strong wind weather, and when receiving the strong wind effect, accessible is protected the davit in coordination with jib 5, makes the davit be difficult for producing rocking by a relatively large margin under the strong wind effect.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. A portal crane with a double-support-rod cooperative buffering structure comprises a pair of portal supports (1), and is characterized in that: a horizontal guide rail (2) is connected between the door seat supports (1), two electric sliding tables (3) are connected to the horizontal guide rail (2) in a sliding manner, each electric sliding table (3) comprises a shell (301), two pairs of guide wheels (302) matched with the horizontal guide rail (2) are connected to the inner side of the shell (301) in a rotating manner, the lower ends of the shells (301) are respectively connected with articulated shafts in a rotating manner, a main suspender (4) and a cooperative suspender (5) are respectively connected to the articulated shafts on the two electric sliding tables (3), the main suspender (4) comprises a main rod body (401), an anchoring block (402) is fixedly connected to the lower end of the main rod body (401), a hoisting device main body (403) is fixedly connected to the lower end of the anchoring block (402), the cooperative suspender (5) comprises a sleeve (501), and an electric pull rod (502) is connected to the sleeve (501) in a sliding manner, the power output end of the electric pull rod (502) is fixedly connected with a pull ring (503), a fixed seat (504) is connected between the pull ring (503) and the outer wall of the pull rod main body (401), and a vibration alarm (6) matched with the fixed seat (504) is fixedly connected to the outer wall of the pull rod main body (401).

2. The portal crane with the double-strut cooperative damping structure according to claim 1, wherein: the inboard fixedly connected with and guide pulley (302) assorted pivot of casing (301), it has anchor rod (7) to peg graft in the pivot, the inner wall upper berth of horizontal guide rail (2) is equipped with stagnation area (8), stagnation area (8) are including fixed band (801), sliding connection has floating band (802) in fixed band (801), the middle part fixedly connected with and the floating band assorted damping strip (803) of fixed band (801), anchor rod (7) are close to the one end in stagnation area (8) and seted up with damping strip (803) assorted triangle slot, install in casing (301) with anchor rod (7) assorted electric putter.

3. The portal crane with the double-strut cooperative damping structure according to claim 1, wherein: be connected with the connecting axle between pull ring (503) and fixing base (504), vibration alarm (6) include with connecting axle assorted fixed lid (601), the inner wall upper berth of fixed lid (601) is equipped with elasticity ring membrane (602), a plurality of evenly distributed's of fixedly connected with piezoelectricity diaphragm (603) on elasticity ring membrane (602), install in pull rod main part (401) with piezoelectricity diaphragm (603) assorted treater, the treater with jib (5) signal connection in coordination.

4. The portal crane with the double-strut cooperative damping structure according to claim 1, wherein: including a control system, control system is including installing the controller on horizontal guide rail (2), electronic slip table (3), main jib (4), jib (5) and vibration alarm (6) all with controller electric connection in coordination.

5. The portal crane with the double-strut cooperative damping structure according to claim 1, wherein: a pair of pull rods is connected between the top end of the door seat support (1) and the horizontal guide rail (2), and a distribution box matched with the controller is installed on the door seat support (1).

6. The portal crane with the double-strut cooperative damping structure according to claim 1, wherein: be connected with the buffer between electric pull rod (502) and sleeve pipe (501) inner wall bottom, the buffer includes the pneumatic cylinder, fixedly connected with compression spring on the power take off of pneumatic cylinder, compression spring keeps away from the one end and electric pull rod (502) fixed connection of pneumatic cylinder.

7. The portal crane with the double-strut cooperative damping structure according to claim 1, wherein: the electric power tool is characterized in that a pair of mounting grooves are formed in the outer wall of the electric push rod (502), electric bayonet locks are fixedly connected to the inner wall of each mounting groove, and a plurality of clamping grooves matched with the output ends of the electric bayonet locks are formed in the inner wall of the sleeve (501).

8. The portal crane with the double-strut cooperative damping structure according to claim 1, wherein: and the shell (301) is fixedly connected with a reluctance damper (303) matched with the hinged shaft.

9. The portal crane with the double-strut cooperative damping structure according to claim 1, wherein: the using process comprises the following steps:

s1, firstly, driving a pair of electric sliding tables (3) to move to a working position;

s2, the hoisting operation is carried out by controlling the hoisting device main body (403) at the bottom end of the main suspender (4);

s3, stabilizing the main suspender (4) through the cooperative suspender (5) during hoisting work, so that the main suspender (4) is not easy to shake during hoisting heavy objects;

s4, when the hoisting device main body (403) hoists the object to the lifting limit or needs to slowly lift the heavy object, the technician can drive the electric sliding table (3) connected with the cooperative suspender (5) to move towards the direction far away from the other electric sliding table (3), and at the moment, the cooperative suspender (5) pulls one end of the main suspender (4) to obliquely lift, so that the heavy object is slowly lifted.

10. The portal crane with the double-strut cooperative damping structure according to claim 1, wherein: and in the step S1, the pair of electric sliding tables (3) keep the same speed when moving, and the distance range between the pair of electric sliding tables (3) is one tenth to one half of the total length of the horizontal guide rail (2).