CN215287708U

CN215287708U - Crane heightening device

Info

Publication number: CN215287708U
Application number: CN202120897494.3U
Authority: CN
Inventors: 张晓伟; 盛永刚
Original assignee: Dalian Sanhuan Hoisting Machinery Factory
Current assignee: Dalian Sanhuan Hoisting Machinery Factory
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2021-12-24
Anticipated expiration: 2031-04-28

Abstract

The utility model discloses a hoist heightening device, which comprises a housin, the inside division of casing has the work groove, casing side wall fixed mounting has a pair of first motor, first motor output is connected with the split threaded rod, the split threaded rod run through in casing side wall, split threaded rod both ends have connect a pair of internal thread sleeve soon, casing both sides wall all is equipped with feed mechanism, the feed mechanism outside is connected with stop gear, the casing bottom is equipped with a pair of hold-down mechanism. The utility model relates to a hoist technical field, this device compact structure makes the portal realize rising and the function that descends through the mechanism of two pairs of first motor cooperation diagonal rod and connecting rod to press spacing wedge through the briquetting, and carry on spacingly in the race of entering pulley lateral wall face, spacing wedge makes the pulley can not take place the slip phenomenon, from the security of having guaranteed whole device, gives people and has brought the convenience.

Description

Crane heightening device

Technical Field

The utility model relates to a hoist technical field specifically is a hoist heightening device.

Background

A portal crane, also called portal crane, is a deformation of bridge crane, mainly used for the loading and unloading operation of outdoor goods yard, stock yard goods, bulk cargo, its metal structure looks like the portal frame, bear and mount two stabilizer blades under the girder, can walk on the orbit on the ground directly, the girder both ends can have overhanging cantilever beam, have high, operation range large, adaptive wide, strong characteristics such as the universality of the field utilization rate.

In the working process of the portal crane, the height of the portal crane needs to be adjusted to adapt to working environments with different heights, and a utility model with the publication number of CN204823725U provides a crane heightening device which comprises a lifting platform, a portal frame, supporting legs and supporting rods, wherein the portal frame is arranged on the supporting legs, the supporting rods are arranged on two sides of the portal frame, the other section of the supporting rod is connected with a main beam, the bottom of the main beam is provided with the lifting platform, the bottom of the lifting platform is provided with a supporting platform, two sides of the main beam are provided with idler wheels, the connecting part of the idler wheels and the portal frame is provided with a slide rail, the top of the main beam is provided with a rail clamping device, the main beam is provided with a threaded hole, the supporting rods are provided with threaded holes, and the connecting part of the supporting rods and the portal frame is provided with a pin shaft; in summary, the utility model has the advantages of rational structure, stable and safe lifting and increasing the lifting height. However, although the device can lift the crane, the device is not provided with a stable limiting mechanism of the crane, and the safety is low.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a hoist heightening device has solved the problem that does not possess the stable stop gear of hoist.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a crane heightening device comprises a shell, wherein a working groove is formed in the shell, a pair of first motors is fixedly mounted on one side wall surface of the shell, the output ends of the first motors are connected with a split threaded rod, the split threaded rod penetrates through the side wall surface of the shell, one end of the split threaded rod is movably connected to the inner wall surface of the working groove, a pair of threads with opposite rotating directions are arranged at two ends of the split threaded rod, a pair of internal threaded sleeves are rotatably connected at two ends of the split threaded rod, connecting rods are hinged to the tops of the internal threaded sleeves, connecting seats are arranged at the tops of the connecting rods, the tops of the connecting rods are hinged to two sides of the connecting seats, sliding plates are fixedly mounted at the tops of the connecting seats, first sliding pins are arranged at two sides of the working groove, first sliding grooves are formed in two side wall surfaces of the working groove, and are slidably connected in the first sliding grooves, the improved sliding device is characterized in that a portal is fixedly mounted at the top of the sliding plate, a sliding frame is fixedly mounted at the bottom of the internal thread sleeve, a connecting plate is arranged at the bottom of the sliding frame, two pairs of rollers are arranged at the bottom of the connecting plate, a second sliding pin is arranged at the center of the bottom of the connecting plate, a pair of second sliding grooves are formed in the bottom of the working groove, the second sliding pin is connected in the second sliding grooves in a sliding mode, the rollers roll on the lower wall surface in the working groove, two pairs of pulley seats are fixedly mounted at the bottom of the shell, pulleys are arranged in the pulley seats, feeding mechanisms are arranged on the side wall surfaces of the two sides of the shell, limiting mechanisms are connected to the outer sides of the feeding mechanisms, and a pair of pressing mechanisms are arranged at the bottom of the shell.

Preferably, the feeding mechanism comprises a pair of second motors, the second motors are fixedly installed on two outer side wall surfaces of the shell, the output ends of the second motors are connected with threaded rods, limiting plates are arranged on two sides of the bottom of the shell, the bottom of each threaded rod is movably connected into the corresponding limiting plate, an internal thread connecting block is screwed on each threaded rod, and the inner wall surface of each internal thread connecting block slides on the side wall surface of the shell.

Preferably, the limiting mechanism comprises a limiting seat hinged to the outer side wall of the internal thread connecting block, a third sliding groove is formed in the bottom of the limiting seat, two pairs of limiting wedges are arranged at the bottom of the limiting seat, third sliding pins are arranged on the side wall surfaces of the limiting wedges, the third sliding pins are connected in the third sliding groove in a sliding mode, a pair of springs is arranged in the third sliding groove, and the pair of springs is connected between the third sliding groove and the pair of third sliding pins.

Preferably, the pressing mechanism comprises a pair of air cylinders fixedly embedded at the bottom of the shell, and the driving ends of the air cylinders are connected with pressing blocks;

inclined planes are arranged on the inner wall surface of the limiting wedge and two sides of the bottom of the pressing block.

Preferably, the top of the internal thread connecting block is provided with an internal thread connecting plate, the top of the limiting seat is provided with a limiting groove, an internal thread groove is arranged in the limiting groove, and the internal thread connecting plate is connected with the internal thread groove through a bolt.

Preferably, the pulley side wall surface is provided with a pulley groove.

Advantageous effects

The utility model provides a hoist heightening device, following beneficial effect is possessed, this device compact structure, the mechanism through two pairs of first motor cooperation diagonal rod and connecting rod makes the portal realize the function that rises and descend, and support the diagonal rod through a pair of carriage, the intensity to the diagonal rod has been protected again when making it realize the function of rising, the gyro wheel that makes the casing bottom through feed mechanism and stop gear obtains spacingly, and press spacing wedge through the briquetting, spacing wedge slides in spacing seat, and carry on spacingly in advancing the race of pulley lateral wall face, spacing wedge makes the pulley can not take place the slip phenomenon, from the security of having guaranteed whole device, give people and brought the convenience.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic side view of the limiting mechanism of the present invention.

In the figure: 1. a housing; 2. a working groove; 3. a first motor; 4. oppositely pulling the threaded rod; 5. an internally threaded sleeve; 6. a connecting rod; 7. a connecting seat; 8. a sliding plate; 9. a first slide pin; 10. a gantry; 11. a carriage; 12. a connecting plate; 13. a second slide pin; 14. a pulley seat; 15. a pulley; 16. a second motor; 17. a threaded rod; 18. a limiting plate; 19. an internal thread connecting block; 20. a limiting seat; 21. a limiting wedge; 22. a third slide pin; 23. a cylinder; 24. briquetting; 25. an internal thread connecting plate; 26. a wheel groove; 27. a limiting groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, a crane heightening device comprises a casing 1, a working slot 2 is formed in the casing 1, a pair of first motors 3 is fixedly installed on one side wall surface of the casing 1, output ends of the first motors 3 are connected with a split threaded rod 4, the split threaded rod 4 penetrates through the side wall surface of the casing 1, one end of the split threaded rod is movably connected to the inner wall surface of the working slot 2, two ends of the split threaded rod 4 are provided with a pair of threads with opposite rotation directions, two ends of the split threaded rod 4 are rotatably connected with a pair of internal threaded sleeves 5, the top of each internal threaded sleeve 5 is hinged with a connecting rod 6, the top of each connecting rod 6 is provided with a connecting seat 7, the top of each connecting rod 6 is hinged to two sides of the connecting seat 7, the top of each connecting seat 7 is fixedly provided with a sliding plate 8, two sides of each sliding plate 8 are provided with first sliding pins 9, and two side wall surfaces in the working slot 2 are provided with first sliding slots, the first sliding pin 9 is connected in a sliding manner in the first sliding groove, the top of the sliding plate 8 is fixedly provided with a portal frame 10, the bottom of the internal thread sleeve 5 is fixedly provided with a sliding frame 11, the bottom of the sliding frame 11 is provided with a connecting plate 12, the bottom of the connecting plate 12 is provided with two pairs of rollers, the center of the bottom of the connecting plate 12 is provided with a second sliding pin 13, the bottom of the working groove 2 is provided with a pair of second sliding grooves, the second sliding pin 13 is connected in the second sliding grooves in a sliding manner, the rollers roll on the lower wall surface in the working groove 2, the bottom of the shell 1 is fixedly provided with two pairs of pulley bases 14, pulleys 15 are arranged in the pulley bases 14, the two side wall surfaces of the shell 1 are both provided with a feeding mechanism, the outer side of the feeding mechanism is connected with a limiting mechanism, the bottom of the shell 1 is provided with a pair of pressing mechanisms, and the feeding mechanism comprises a pair of second motors 16, the pair of second motors 16 are fixedly installed on two outer side wall surfaces of the shell 1, the output end of each second motor 16 is connected with a threaded rod 17, limiting plates 18 are arranged on two sides of the bottom of the shell 1, the bottom of each threaded rod 17 is movably connected into the corresponding limiting plate 18, an internal thread connecting block 19 is screwed on the threaded rod 17, the inner wall surface of the internal thread connecting block 19 slides on the side wall surface of the shell 1, each limiting mechanism comprises a limiting seat 20 hinged on the outer side wall of the internal thread connecting block 19, a third sliding groove is formed in the bottom of the limiting seat 20, two pairs of limiting wedges 21 are arranged at the bottom of the limiting seat 20, a third sliding pin 22 is arranged on the side wall surface of each limiting wedge 21, the third sliding pin 22 is slidably connected into the third sliding groove, a pair of springs are arranged in the third sliding groove, and a pair of springs are connected between the third sliding groove and the pair of third sliding pins 22, the pressing mechanism comprises a pair of air cylinders 23 fixedly embedded at the bottom of the shell 1, and the driving ends of the air cylinders 23 are connected with pressing blocks 24;

inclined planes are arranged on the inner wall surface of the limiting wedge 21 and two sides of the bottom of the pressing block 24, an internal thread connecting plate 25 is arranged on the top of the internal thread connecting plate 19, a limiting groove 27 is arranged on the top of the limiting seat 20, an internal thread groove is arranged in the limiting groove 27, the internal thread connecting plate 25 is connected with the internal thread groove through a bolt, and a wheel groove 26 is formed in the side wall surface of the pulley 15.

Example (b): when the portal frame 10 is lifted, firstly, the output ends of a pair of first motors 3 are simultaneously controlled to rotate, the opposite pull threaded rods 4 are simultaneously controlled to rotate, a pair of internal threaded sleeves 5 relatively move, at the moment, the tops of a pair of connecting rods 6 move upwards, a connecting seat 7 moves upwards, a sliding plate 8 moves upwards, a first sliding pin 9 slides upwards in a first sliding groove, the portal frame 10 moves upwards, a pair of sliding frames 11 relatively move along with the internal threaded sleeves 5 while sliding, a connecting plate 12 at the bottoms of the sliding frames 11 relatively move, a second sliding pin 13 moves in a second sliding groove, the opposite pull threaded rods 4 are supported, in order to prevent the pulley 15 from sliding in the lifting process, a bolt is screwed out from a limiting groove 27 and an internal threaded connecting plate 25, the output ends of second motors 16 are controlled to rotate, the threaded rods 17 rotate, and the internal threaded connecting blocks 19 slide up and down on the side wall of the shell 1, in the sliding process, the limiting seat 20 is turned over, the limiting wedge 21 enters between the pair of pulleys 15 in a turning mode, when the side wall surface of the limiting seat 20 is completely contacted with the ground, the second motor 16 stops rotating, the driving end of the control cylinder 23 extends, the pressing block 24 presses the limiting wedge 21, the inclined surface at the bottom of the pressing block 24 and the inclined surface of the side wall surface of the limiting wedge 21 are extruded and slide, the third sliding pin 22 of the side wall surface of the limiting wedge 21 moves towards the direction of the pulleys 15 along the third sliding groove and enters the pulley groove 26 to limit the pulleys 15, and convenience is brought to people.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The crane heightening device comprises a shell (1) and is characterized in that a working groove (2) is formed in the shell (1), a pair of first motors (3) is fixedly mounted on one side wall surface of the shell (1), the output ends of the first motors (3) are connected with a counter-pulling threaded rod (4), the counter-pulling threaded rod (4) penetrates through the side wall surface of the shell (1), one end of the counter-pulling threaded rod is movably connected to the inner wall surface of the working groove (2), a pair of threads with opposite rotating directions are arranged at the two ends of the counter-pulling threaded rod (4), a pair of internal thread sleeves (5) are screwed at the two ends of the counter-pulling threaded rod (4), a connecting rod (6) is hinged to the top of each internal thread sleeve (5), a pair of connecting rods (7) are arranged at the tops of the connecting rods (6), and the tops of the connecting rods (6) are hinged to the two sides of the connecting rods (7), the top of the connecting seat (7) is fixedly provided with a sliding plate (8), two sides of the sliding plate (8) are provided with first sliding pins (9), two side wall surfaces inside the working groove (2) are respectively provided with a first sliding groove, the first sliding pins (9) are connected in the first sliding grooves in a sliding manner, the top of the sliding plate (8) is fixedly provided with a portal frame (10), the bottom of the internal thread sleeve (5) is fixedly provided with a sliding frame (11), the bottom of the sliding frame (11) is provided with a connecting plate (12), the bottom of the connecting plate (12) is provided with two pairs of idler wheels, the center of the bottom of the connecting plate (12) is provided with a second sliding pin (13), the bottom of the working groove (2) is provided with a pair of second sliding grooves, the second sliding pins (13) are connected in the second sliding grooves in a sliding manner, the idler wheels roll on the inner lower wall surface of the working groove (2), and the bottom of the shell (1) is fixedly provided with two pairs of pulley seats (14), be equipped with pulley (15) in pulley seat (14), casing (1) both sides lateral wall face all is equipped with feed mechanism, the feed mechanism outside is connected with stop gear, casing (1) bottom is equipped with a pair of hold-down mechanism.

2. The crane heightening device according to claim 1, wherein the feeding mechanism comprises a pair of second motors (16), the second motors (16) are fixedly mounted on two outer side wall surfaces of the casing (1), a threaded rod (17) is connected to an output end of each second motor (16), limiting plates (18) are arranged on two sides of the bottom of the casing (1), the bottom of each threaded rod (17) is movably connected into the corresponding limiting plate (18), an internal thread connecting block (19) is screwed onto each threaded rod (17), and the inner wall surface of each internal thread connecting block (19) slides on the side wall surface of the casing (1).

3. The heightening device of a crane according to claim 2, wherein the limiting mechanism comprises a limiting seat (20) hinged to the outer side wall of the female screw connecting block (19), a third sliding groove is formed in the bottom of the limiting seat (20), two pairs of limiting wedges (21) are arranged at the bottom of the limiting seat (20), a third sliding pin (22) is arranged on the side wall surface of each limiting wedge (21), the third sliding pin (22) is slidably connected into the third sliding groove, a pair of springs is arranged in the third sliding groove, and the pair of springs is connected between the third sliding groove and the pair of third sliding pins (22).

4. A crane heightening device according to claim 3, wherein the pressing mechanism comprises a pair of cylinders (23) fixedly embedded at the bottom of the housing (1), and a pressing block (24) is connected to the driving ends of the cylinders (23);

inclined planes are arranged on the inner wall surface of the limiting wedge (21) and two sides of the bottom of the pressing block (24).

5. A crane heightening device according to claim 3, wherein an internal thread connecting plate (25) is arranged at the top of the internal thread connecting block (19), a limiting groove (27) is arranged at the top of the limiting seat (20), an internal thread groove is arranged in the limiting groove (27), and the internal thread connecting plate (25) is connected with the internal thread groove through a bolt.

6. A crane heightening device as defined in claim 1, wherein the side wall surface of said pulley (15) is grooved (26).