Overturn-preventing device of single-beam portal crane

Abstract

The utility model discloses an anti-overturning device of a single-beam portal crane, and particularly relates to the technical field of crane overturning prevention, the anti-overturning device of the single-beam portal crane comprises a door beam, and further comprises movable supporting seats, grooves, a telescopic adjusting mechanism and an inclined supporting assembly, the movable supporting seats are telescopically arranged at the two ends of a base, and the grooves are formed in the movable supporting seats; an embedding groove is formed in the upper end face of the movable supporting seat, the groove is formed in the base in the length direction, and telescopic structures are oppositely arranged in the groove; during use, the two gears in the groove can rotate in opposite directions, so that the two racks are moved out, the two movable supporting seats are far away from each other, the grounding range of the bottom end is enlarged, then the supporting block at the output end of the telescopic rod is embedded into the embedding groove, inclined supporting can be carried out, and the working efficiency is improved. The arrangement of the anti-overturning structure can effectively prevent overturning accidents caused by overloading, uneven ground, overlarge wind power and the like in the operation process of the crane.

Description

Technical Field

[0001] The utility model relates to the technical field of crane anti-overturning, in particular to an anti-overturning device for a single-beam gantry crane. Background Art

[0002] Single-girder gantry crane is a commonly used lifting equipment. Single-girder gantry crane is a bridge crane. Its bridge consists of a main beam and two end beams, forming a "gate" shaped structure. An electric hoist or electric trolley is hung under the main beam for lifting and moving heavy objects. It is widely used in factories, warehouses, construction sites and other places.

[0003] Single-girder gantry cranes usually have a large span and height, and are mostly operated in the open air, and are easily affected by external environmental factors (such as wind, changes in ground conditions, etc.). These characteristics make single-girder gantry cranes more prone to overturning accidents than other types of lifting equipment. Secondly, overloading, rapid lifting or lowering, sudden braking, etc. may cause the crane to become unstable, resulting in overturning accidents. Therefore, it is very important to set an anti-overturning structure for the single-girder gantry crane. For this purpose, an anti-overturning device for a single-girder gantry crane is proposed herein. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-overturning device for a single-girder gantry crane to solve the above-mentioned shortcomings in the technology.

[0005] In order to achieve the above object, the present invention provides the following technical solution: an anti-overturning device for a single-girder gantry crane, comprising a gantry beam, wherein the gantry beam is composed of a vertical beam and a horizontal beam, and a base is installed at the bottom end of the vertical beam, and further comprising:

[0006] A movable support, which is telescopically arranged at both ends of the base, and an embedding groove is formed on the upper end surface of the movable support;

[0007] A groove is provided inside the base along the length direction, a telescopic structure is relatively provided inside the groove, and an end of the telescopic structure is connected to the movable support seat;

[0008] A telescopic adjustment mechanism is provided on the base, and the two telescopic structures are synchronously adjusted by the telescopic adjustment mechanism to move the two opposite movable supports closer to or farther away from each other;

[0009] The diagonal bracing assembly is arranged on the vertical beam. The diagonal bracing assembly can be deflected, and the end of the diagonal bracing assembly can be embedded in the embedding groove.

[0010] Preferably, the diagonal support assembly includes a telescopic rod and a deflection motor, a receiving slot is provided on the vertical beam, a connecting block is fixed to the mounting end of the telescopic rod, the output end of the telescopic rod is hinged to the support block, and the deflection motor is connected to the connecting block via a connecting shaft.

[0011] Preferably, the telescopic structure includes a rack arranged at the bottom of the groove, the outer end of the rack is connected to the movable support through a connecting plate, and a third gear is meshed with the rack, and the third gear is connected to a connecting rod extending to the outside of the base.

[0012] Preferably, the telescopic adjustment mechanism includes a second pulley installed on the outer end of one of the connecting rods, a second gear is installed on the outer end of the other connecting rod on the same side, and the outer wall of the base is also rotatably mounted with a first pulley, the outer end of the first pulley is fixed with a first gear, the first gear is meshed and connected to the second gear, a belt is provided between the first pulley and the second pulley, and a servo motor is installed at the end of the second pulley.

[0013] Preferably, the size of the support block is smaller than the size of the embedding groove, and the outer wall of the support block is provided with anti-slip grooves.

[0014] Preferably, a grounding plate is fixed to the lower end surface of the movable support, and a plurality of balls are installed on the lower end surface of the grounding plate.

[0015] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0016] By setting up a telescopic adjustment mechanism, a telescopic structure and a diagonal bracing assembly, when in use, the servo motor can be used to drive the first pulley to rotate, and then the first gear can be used to drive the meshed second gear to rotate, so that the two gears inside the groove can rotate in opposite directions, thereby moving the two racks out, so that the two movable support seats are separated, and the range of the bottom end grounding is increased. Thereafter, by adjusting the diagonal bracing assembly, the support block at the output end of the telescopic rod is embedded in the embedded groove, and diagonal bracing can be performed. The setting of the anti-overturning structure can effectively prevent the crane from overturning accidents caused by overload, uneven ground, excessive wind force, etc. during operation, thereby protecting the safety of the operator and surrounding personnel;

[0017] The outward moving distance of the two movable supports can be flexibly adjusted, and the deflection angle of the telescopic rod can also be adjusted, so that the chrysanthemum family can achieve effective oblique support according to the outward moving distance of different movable supports. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a structural diagram of the vertical beam of the utility model;

[0021] Figure 3 This is a structural diagram of the base, movable support and telescopic adjustment mechanism of the utility model;

[0022] Figure 4 This is a structural diagram of the utility model in which the base and the movable support are separated;

[0023] Figure 5 This is a schematic cross-sectional view of the base of the utility model;

[0024] Figure 6 It is a structural diagram of the movable support and the grounding plate of the utility model.

[0025] Description of reference numerals:

[0026] 1. Door beam; 101. Vertical beam; 102. Horizontal beam; 2. Base; 3. Movable support;

[0027] 4. Telescopic adjustment mechanism; 41. Servo motor; 42. Belt; 43. First pulley; 44. Second pulley; 45. First gear; 46. Second gear;

[0028] 5. Receiving tank;

[0029] 6. Diagonal bracing assembly; 61. Telescopic rod; 62. Support block; 63. Connecting block; 64. Deflection motor;

[0030] 7. Groove; 8. Recess; 9. Ground plate; 10. Rack; 11. Third gear; 12. Ball. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] The utility model provides Figures 1-6The anti-overturning device of the single-beam gantry crane shown in the figure includes a door beam 1, which is composed of a vertical beam 101 and a horizontal beam 102. There are two vertical beams 101, and a base 2 is installed at the bottom end of the vertical beam 101. It also includes a movable support 3, a telescopic adjustment mechanism 4, a diagonal support assembly 6 and a groove 8. The movable support 3 is telescopically arranged at both ends of the base 2, and the upper end surface of the movable support 3 is provided with an embedding groove 7, and the lower end surface of the movable support 3 is fixed with a grounding plate 9, and the lower end surface of the grounding plate 9 is installed with a plurality of balls 12, which are rolled and installed, and the lower end surface of the ball 12 is in contact with the bottom The lower end surface of the seat 2 is flush, and the groove 8 is opened inside the base 2 along the length direction. A telescopic structure is relatively provided inside the groove 8, and the end of the telescopic structure is connected to the movable support seat 3; the telescopic adjustment mechanism 4 is provided on the base 2, and the two telescopic structures are synchronously adjusted through the telescopic adjustment mechanism 4 to make the two relative movable supports 3 closer or farther away. In areas with strong winds, the two movable supports 3 can be adjusted away from each other to increase stability; the diagonal support assembly 6 is provided on the vertical beam 101, the diagonal support assembly 6 can be deflected, and the end of the diagonal support assembly 6 can be embedded in the embedding groove 7.

[0033] Among them, in the specific implementation mode, refer to Figure 2 As shown, the diagonal support assembly 6 includes a telescopic rod 61 and a deflection motor 64. The telescopic rod 61 is preferably a hydraulic telescopic rod or an electric telescopic rod. A receiving slot 5 is provided on the vertical beam 101. The mounting end of the telescopic rod 61 is fixed with a connecting block 63. The output end of the telescopic rod 61 is hinged with a support block 62. The deflection motor 64 is connected to the connecting block 63 through a connecting shaft. The size of the support block 62 is smaller than the size of the embedding slot 7, and the outer wall of the support block 62 is provided with anti-slip grooves. By starting the deflection motor 64 and using the output end of the deflection motor 64 to drive the support block 62 to move, the deflection of the telescopic rod 61 in the receiving slot 5 can be achieved.

[0034] See Figure 5 As shown, the telescopic structure includes a rack 10 arranged at the bottom of the groove 8, the outer end of the rack 10 is connected to the movable support 3 through a connecting plate, and the rack 10 is meshed with a third gear 11, and the third gear 11 is connected to a connecting rod extending to the outside of the base 2.

[0035] See Figure 4 and Figure 5 As shown, the telescopic adjustment mechanism 4 includes a second pulley 44 installed on the outer end of one of the connecting rods, a second gear 46 is installed on the outer end of the other connecting rod on the same side, and a first pulley 43 is also rotatably installed on the outer wall of the base 2. A first gear 45 is fixed to the outer end of the first pulley 43, and the first gear 45 is meshed and connected to the second gear 46. A belt 42 is provided between the first pulley 43 and the second pulley 44, and a servo motor 41 is installed at the end of the second pulley 44.

[0036] Through the above, when used in areas with strong winds, the output end of the servo motor 41 can be used to drive the first pulley 43 to rotate, and then drive the second pulley 44 connected to the belt 42 to rotate, so that the first gear 45 can be used to drive the meshed second gear 46 to rotate, so that the two gears inside the groove 8 can rotate in opposite directions, thereby moving the two racks 10 out to move the two movable supports 3 away from each other, increasing the range of the bottom grounding, and then using the deflection motor 64 to deflect the telescopic rod 61 from the accommodating groove 5, and then start the telescopic rod 61 again, so that the support block 62 at the output end of the telescopic rod 61 is embedded in the embedding groove 7, and diagonal support can be performed to improve the anti-overturning ability.

[0037] The outward moving distances of the two movable supports 3 are adjustable, and the deflection angle of the telescopic rod 61 is also adjustable, so that effective oblique support can be achieved for different outward moving distances of the movable supports 3 .

[0038] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An anti-overturning device for a single-beam gantry crane, comprising a gantry beam (1), wherein the gantry beam (1) is composed of a vertical beam (101) and a horizontal beam (102), and a base (2) is installed at the bottom end of the vertical beam (101), characterized in that: Also included are: A movable support seat (3), wherein the movable support seat (3) is telescopically arranged at both ends of the base (2), and an embedding groove (7) is provided on the upper end surface of the movable support seat (3); A groove (8) is provided inside the base (2) along the length direction, a telescopic structure is relatively provided inside the groove (8), and an end of the telescopic structure is connected to the movable support seat (3); A telescopic adjustment mechanism (4) is provided on the base (2), and the two telescopic structures are synchronously adjusted by the telescopic adjustment mechanism (4) so as to move the two opposite movable supports (3) closer to or farther away from each other; The diagonal bracing assembly (6) is provided on the vertical beam (101); the diagonal bracing assembly (6) is deflectable, and the end of the diagonal bracing assembly (6) is embedded in the embedding groove (7).

2. The anti-overturning device of the single-girder gantry crane according to claim 1, characterized in that: The diagonal support assembly (6) comprises a telescopic rod (61) and a deflection motor (64); a receiving slot (5) is provided on the vertical beam (101); a connecting block (63) is fixed to the mounting end of the telescopic rod (61); an output end of the telescopic rod (61) is hingedly connected to a support block (62); and the deflection motor (64) is connected to the connecting block (63) via a connecting shaft.

3. The anti-overturning device of the single-girder gantry crane according to claim 1, characterized in that: The telescopic structure comprises a rack (10) arranged at the bottom of the groove (8), the outer end of the rack (10) is connected to the movable support (3) via a connecting plate, and a third gear (11) is meshedly connected to the rack (10), and the third gear (11) is connected to a connecting rod extending to the outside of the base (2).

4. The anti-overturning device of the single-girder gantry crane according to claim 3, characterized in that: The telescopic adjustment mechanism (4) includes a second pulley (44) mounted on the outer end of one of the connecting rods, a second gear (46) mounted on the outer end of the other connecting rod on the same side, a first pulley (43) rotatably mounted on the outer wall of the base (2), a first gear (45) fixed to the outer end of the first pulley (43), the first gear (45) meshingly connected to the second gear (46), a belt (42) provided between the first pulley (43) and the second pulley (44), and a servo motor (41) mounted on the end of the second pulley (44).

5. The anti-overturning device of the single-girder gantry crane according to claim 2, characterized in that: The size of the support block (62) is smaller than the size of the embedding groove (7), and the outer wall of the support block (62) is provided with anti-slip grooves.

6. The anti-overturning device of the single-girder gantry crane according to claim 1, characterized in that: A grounding plate (9) is fixed to the lower end surface of the movable support seat (3), and a plurality of balls (12) are installed on the lower end surface of the grounding plate (9).

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