CN109867217B

CN109867217B - Two-way linkage type crane buffer device

Info

Publication number: CN109867217B
Application number: CN201910242989.XA
Authority: CN
Inventors: 王小虎; 周勇
Original assignee: Wuhan University of Technology WUT
Current assignee: Wuhan University of Technology WUT
Priority date: 2019-03-28
Filing date: 2019-03-28
Publication date: 2020-05-26
Anticipated expiration: 2039-03-28
Also published as: CN109867217A

Abstract

The invention discloses a buffering device for a bidirectional linkage type crane, which comprises two square pipes and a base, wherein the bottoms of the two square pipes are provided with first chutes, the upper ends of supporting rods are respectively hinged with two connecting rods, the two connecting rods are hinged with the same hinged point at the upper end of the supporting rod and are respectively arranged at two sides of the supporting rod, the middle part of one side, opposite to the two connecting rods, is provided with a second spring, two ends of the second spring are respectively and fixedly connected to the connecting rods at two sides, the other ends of the connecting rods are provided with sliding blocks which are connected in the first chutes in a sliding manner, four corners of the base are respectively provided with mounting grooves, the lower ends of the supporting rods are respectively inserted. According to the invention, the buffer mechanism is arranged at the connecting position of the supporting rod and the base, and the problem that the supporting rod is damaged due to rigid connection between the supporting rod and the base is avoided through the magnetism which is generated by electrifying the electromagnet and is the same as that of the permanent magnet.

Description

Two-way linkage type crane buffer device

Technical Field

The invention relates to the technical field of crane buffering devices, in particular to a buffering device for a bidirectional linkage crane.

Background

The crane is a multi-action crane for vertically lifting and horizontally carrying heavy objects within a certain range, and the crane has the working characteristic of intermittent movement, namely corresponding mechanisms for taking materials, transporting, unloading and the like in one working cycle alternately work, so that the crane is more and more widely developed and used in the market. Because the weight is lifted without the supporting legs and the lifted weight is frequently used for driving, the driving speed is higher than that of a crawler crane (crawler crane); the operation is stable, the lifting capacity is large, the lifting can be carried out within a specific range, but the road is required to be smooth and firm, the tire air pressure meets the requirement, and the lifting distance from the ground is not more than 50 CM; long distance walking with load is prohibited.

When the existing crane stacks goods, the self-weight of the crane and the weight of the goods lead to the overlarge load of a frame of the crane, and a buffer device is not arranged at the joint of the frame, so that the damage to the frame and the service life are easily reduced.

Disclosure of Invention

In view of the above problems, the present invention provides a lifting device for a bidirectional linkage type heavy machinery, so as to solve the problems in the background art.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a two-way linkage buffer for hoist, includes two square pipes and base, two square pipe bottom is equipped with first spout, and upper end of the support bar all articulates there are two connecting rods, and two connecting rods articulate same pin joint and the both sides that set up at the bracing piece respectively at upper end of the support bar, and two relative one side middle parts of connecting rod are equipped with the second spring, the second spring both ends are fixed connection respectively on the connecting rod of both sides, the other end of connecting rod is equipped with the slider, slider sliding connection be in first spout, the base four corners all is equipped with the mounting groove, and the lower extreme of bracing piece is pegged graft respectively in the mounting groove, all be provided with buffer gear.

Further, buffer gear includes the sliding plate, and bracing piece bottom outer wall passes through the bolt fastening on sliding plate top outer wall, the second spout has been seted up to the both sides inner wall of mounting groove, the vertical setting of second spout, the sliding plate can slide from top to bottom in the mounting groove, the bottom outer wall of sliding plate is fixed and is equipped with the permanent magnet, mounting groove bottom inner wall is fixed with the electro-magnet, and the both sides inner wall of mounting groove is fixed with same spacing ring, the spacing ring is located between sliding plate and the electro-magnet, two the both ends of base top outer wall all are provided with damper.

Furthermore, damper includes the backup pad, and is equipped with the first through-hole that link up from top to bottom in the backup pad, the bracing piece is pegged graft in the first through-hole, and the bracing piece is fixed form fixed connection with the backup pad in the first through-hole, the backup pad both ends are equipped with the second through-hole, and the second through-hole at both ends uses first through-hole as the symmetry center, all peg graft threaded rod in the second through-hole, the threaded rod with backup pad sliding fit, the bottom of threaded rod is fixed on the base.

Furthermore, the outer wall of the threaded rod is sleeved with a first spring, the first spring is installed between the supporting plate and the base, and the threaded rod penetrates through the second through hole and then is in threaded connection with a nut above the supporting plate.

Furthermore, four limiting discs are fixedly sleeved on the outer circles of the supporting rods, pressure sensors are fixed to the bottoms of the four limiting discs, the limiting discs are located right above the supporting plates, and the output ends of the pressure sensors are connected with a microprocessor through signal lines.

Furthermore, the electromagnet is connected with a switch through a lead, and the switch is connected with the microprocessor through a lead.

Compared with the prior art, the invention has the beneficial effects that:

1. this buffer for two-way coordinated type hoist sets up buffer through the position of connecting at bracing piece and base, through the electro-magnet circular telegram produce with the magnetism that the permanent magnet is the same, cushion the pressure that the bracing piece received through the principle that like poles repel each other, avoid the rigid connection between bracing piece and the base to damage the bracing piece, solved current hoist frame and had not buffer's problem.

2. This buffer for two-way coordinated type hoist through set up coupling mechanism between square pipe and bracing piece, articulates on the bracing piece through two connecting rods and again through set up the effort between second spring comes the buffering square pipe and bracing piece between two connecting rods.

Drawings

FIG. 1 is a schematic side view of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic view of a buffering mechanism according to the present invention;

FIG. 4 is a schematic bottom view of the square tube of the present invention;

in the figure: 1-base, 2-first chute, 3-second chute, 4-threaded rod, 5-supporting plate, 6-supporting rod, 7-first spring, 8-square tube, 9-mounting groove, 10-sliding plate, 11-permanent magnet, 12-spacing ring, 13-electromagnet, 14-nut, 15-connecting rod, 16-second spring, 17-first through hole and 18-second through hole.

Detailed Description

The invention provides a buffer device for a bidirectional linkage type crane. Technical solutions provided by embodiments of the present invention to solve the above technical problems, for better understanding of the above technical solutions, the above technical solutions will be described in detail with reference to the drawings and specific embodiments of the present disclosure.

Example 1:

as shown in fig. 2 and 4, the two-way linkage type buffering device for the crane comprises two square pipes 8 and a base 1, wherein a first chute 2 is arranged at the bottom of each square pipe 8, two connecting rods 15 are hinged to the upper end of each supporting rod 6, the two connecting rods 15 are hinged to the same hinge point at the upper end of each supporting rod 6 and are respectively arranged on two sides of each supporting rod 6, a second spring 16 is arranged in the middle of one side, opposite to each connecting rod 15, of each of the two ends of each second spring 16 is fixedly connected to the corresponding connecting rod 15 on the two sides, a sliding block is arranged at the other end of each connecting rod 15 and is slidably connected to the corresponding first chute 2, mounting grooves 9 are formed in four corners of the base 1, the lower ends of the supporting rods 6 are respectively inserted into.

In the above embodiment, when the crane lifts the heavy object, the square tube 8 is forced to move downwards, and the connecting rod is forced to move downwards, under the action of the pressure, the sliding block at the upper end of the connecting rod 15 slides towards two sides in the first sliding chute 2 at the bottom of the square tube 8, and the second spring 16 is stretched to buffer the acting force.

Example 2:

embodiment 2 is a technical scheme further optimized on the basis of embodiment 1, and embodiment 2 is on the basis of embodiment 1, and a buffer mechanism is further arranged at the bottom of the support rod 6, so that the acting force of the crane in the process of hoisting a heavy object can be further buffered.

As shown in fig. 1 and 3, the buffering mechanism includes a sliding plate 10, the bottom outer wall of the supporting rod 6 is fixed on the top outer wall of the sliding plate 10 through a bolt, the second sliding grooves 3 are formed in the inner walls of the two sides of the mounting groove, the second sliding grooves 2 are vertically arranged, the sliding plate 10 can slide up and down in the mounting groove, the bottom outer wall of the sliding plate 10 is fixedly provided with a permanent magnet 11, the bottom inner wall of the mounting groove 9 is fixedly provided with an electromagnet 13, the inner walls of the two sides of the mounting groove 9 are fixedly provided with a same limiting ring 12, the limiting ring 12 is located between the sliding plate 10 and the electromagnet 13, and two ends of the top outer.

As a further optimized implementation scheme, the damping mechanism comprises a supporting plate 5, a first through hole 17 which is through up and down is formed in the supporting plate 5, the supporting rod 6 is inserted into the first through hole 17, the supporting rod 6 is fixed in the first through hole 17 and fixedly connected with the supporting plate, second through holes 18 are formed in two ends of the supporting plate 5, the first through hole 17 is used as a symmetry center for the second through holes 18 at the two ends, a threaded rod 4 is inserted into each second through hole 18, the threaded rod 4 is in sliding fit with the supporting plate 5, and the bottom of the threaded rod 4 is fixed on the base 1.

In the above embodiment, the outer wall of the threaded rod 4 is sleeved with the first spring 7, the first spring 7 is installed between the support plate 5 and the base 1, and the threaded rod 4 passes through the second through hole 18 and then is in threaded connection with the nut 14 above the support plate. Four fixed the cup jointing has spacing dish on the 6 excircles of bracing piece, and four spacing dish bottoms all are fixed with pressure sensor, spacing dish is located backup pad 5 directly over, pressure sensor's output is connected with microprocessor through the signal line. The electromagnet 13 is connected with a switch through a lead, and the switch is connected with the microprocessor through a lead.

In the above embodiment, when the crane lifts the heavy object, the square tube 8 is forced to move downwards, and the connecting rod is forced to move downwards, under the action of the pressure, the sliding block at the upper end of the connecting rod 15 slides towards two sides in the first sliding chute 2 at the bottom of the square tube 8, and the second spring 16 is stretched to buffer the acting force. When receiving bigger decurrent effort, bracing piece 6 continues the downstream,

backup pad

5 and 6 fixed connection of bracing piece are along with the bracing piece downstream together, backup pad 5 compresses tightly the first spring 7 of both sides this moment, first spring plays, cushion whole device, set up pressure sensor on the bracing piece 6 this moment and monitor the size of bracing piece 6 atress through pressure sensor, pressure sensor feeds back information to microprocessor when the atress reaches certain degree, microprocessor control electro-magnet 13 electrified production and the same magnetism of permanent magnet 11, according to the principle that like poles repel each other, can drive sliding plate 10 upwards slide in second spout 3, thereby give 6 ascending efforts of bracing piece, help buffer pressure. A stop ring between the slide plate 10 and the electromagnet 13 limits the position of the slide plate 10 in its downward movement. The type of the microprocessor used in the above embodiment is ARM9TDMI, but is not limited to ARM9 TDMI.

The present invention has been described in detail with reference to the specific embodiments, but the present invention is only one of the embodiments, and the present invention is not limited to the specific embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are also within the scope of the present invention. Accordingly, equivalent changes and modifications made without departing from the spirit and scope of the present invention should be covered by the present invention.

Claims

1. The utility model provides a two-way coordinated type buffer for hoist, includes two square pipes (8) and base (1), its characterized in that: the bottom parts of the two square pipes (8) are provided with first sliding grooves (2), the upper ends of the supporting rods (6) are hinged with two connecting rods (15), the two connecting rods (15) are hinged at the same hinged point at the upper end of the supporting rods (6) and are respectively arranged at two sides of the supporting rods (6), the middle part of one side, opposite to the two connecting rods (15), is provided with a second spring (16), two ends of the second spring (16) are respectively and fixedly connected to the connecting rods (15) at the two sides, the other end of each connecting rod (15) is provided with a sliding block, the sliding block is slidably connected in the first sliding grooves (2), four corners of the base (1) are respectively provided with mounting grooves (9), the lower ends of the supporting rods (6) are respectively inserted in;

the damping mechanism comprises a sliding plate (10), the bottom outer wall of the supporting rod (6) is fixed on the top outer wall of the sliding plate (10) through bolts, second sliding grooves (3) are formed in the inner walls of the two sides of the mounting groove, the second sliding grooves (3) are vertically arranged, the sliding plate (10) can slide up and down in the mounting groove, a permanent magnet (11) is fixedly arranged on the bottom outer wall of the sliding plate (10), an electromagnet (13) is fixedly arranged on the bottom inner wall of the mounting groove (9), the same limiting ring (12) is fixedly arranged on the inner walls of the two sides of the mounting groove (9), the limiting ring (12) is positioned between the sliding plate (10) and the electromagnet (13), and damping mechanisms are arranged at the two ends of the top outer wall;

four fixed the cup jointing has spacing dish on bracing piece (6) excircle, and four spacing dish bottoms all are fixed with pressure sensor, spacing dish is located backup pad (5) directly over, pressure sensor's output is connected with microprocessor through the signal line.

2. The buffer device for the bidirectional linkage crane according to claim 1, wherein: the damping mechanism comprises a supporting plate (5), a first through hole (17) which is through up and down is formed in the supporting plate (5), the supporting rod (6) is inserted into the first through hole (17), the supporting rod (6) is fixed to the first through hole (17) and fixedly connected with the supporting plate, second through holes (18) are formed in two ends of the supporting plate (5), the first through hole (17) is used as a symmetry center for the second through holes (18) at two ends, a threaded rod (4) is inserted into the second through hole (18), the threaded rod (4) is in sliding fit with the supporting plate (5), and the bottom of the threaded rod (4) is fixed to the base (1).

3. The buffer device for the bidirectional linkage crane according to claim 2, wherein: the outer wall of the threaded rod (4) is sleeved with a first spring (7), the first spring (7) is installed between the supporting plate (5) and the base (1), and the threaded rod (4) penetrates through the second through hole (18) and then is in threaded connection with a nut (14) above the supporting plate.

4. The buffer device for the bidirectional linkage crane according to claim 1, wherein: the electromagnet (13) is connected with a switch through a lead, and the switch is connected with the microprocessor through a lead.