CN215249161U - Tower crane is with preventing lifting hook dashes top protection device that falls - Google Patents

Abstract

The utility model discloses a tower crane is with preventing lifting hook dashes top protection device that falls, concretely relates to safety device technical field of hoist, including the load trolley frame, load trolley frame below is provided with hook assembly, load trolley frame and hook assembly transmission are connected with hoisting wire rope, hook assembly top surface fixedly connected with base. The utility model discloses a set up the base, at hook assembly top surface fixed connection base, set up the recess at the base top surface, at the inside first spring that sets up of recess, at first spring top fixed connection telescopic link, set up latch mechanism at the telescopic link top surface, at base top surface fixed connection second spring, set up stop gear in load trolley frame bottom surface, at the in-process that hook assembly rose, first spring and second spring provide the cushioning effect, latch mechanism provides the cushioning effect through buffer gear's buffer spring during contact stop gear, avoid hook assembly top and trolley frame bottom to dash the top the collision and cause hoisting wire rope to be broken.

Description

Tower crane is with preventing lifting hook dashes top protection device that falls

Technical Field

The utility model relates to a safety device technical field of hoist, more specifically say, the utility model relates to a tower crane is with preventing lifting hook dashes top protection device that falls.

Background

In recent years, along with the development and the rise of urban modernization, a crane is used as an important device for urban construction to play an extremely important role, a tower crane for horizontal jib load-carrying trolley amplitude variation is collided with the bottom of the load-carrying trolley when a lifting hook is lifted to the highest position, a lifting height limiter is arranged on a lifting mechanism, and according to the regulation of relevant standards, for the tower crane for trolley amplitude variation, when the minimum distance from the top of a lifting hook device to the lowest end of a trolley frame is 800mm, the lifting motion can be immediately stopped.

In the actual operation process of tower machine, there is the hoisting height stopper inefficacy, and the driver can not in time stop the rising motion of lifting hook again, will form the top of hook assembly and the bottom of dolly frame collision promptly and dash the top, and hoisting cable often is broken because of dashing the top, leads to the lifting hook to fall from the eminence together with the heavy object of lifting by crane, and it is very serious to do after that, therefore, exists and can improve the part.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defect of prior art, the embodiment of the utility model provides a tower crane is with preventing that lifting hook dashes top protection device that falls to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a tower crane is with preventing lifting hook dashes top protection device that falls, includes the load trolley frame, the below of load trolley frame is provided with hook assembly, load trolley frame and hook assembly transmission are connected with hoisting wire rope, hook assembly's top surface fixedly connected with base, the top surface of base is seted up flutedly, the inside of recess is provided with first spring, the bottom fixed connection of first spring is in the base, the top fixedly connected with telescopic link of first spring, the top of telescopic link extends to the outside of recess and is provided with latch mechanism, the top surface fixedly connected with second spring of base, the top laminating in latch mechanism's bottom surface of second spring, the circumference lateral wall of telescopic link is located to the second spring package, the bottom surface of load trolley frame is provided with stop gear directly over the base.

In order to fix the fixed plate, the clamping mechanism includes the fixed plate, the bottom surface fixed connection of fixed plate is in the top surface of telescopic link, the bottom surface of fixed plate is laminated on the top of second spring, the joint groove of symmetry, two are seted up to the both sides of fixed plate the inside in joint groove all is provided with the third spring, the one end fixed connection of third spring in fixed plate, the first telescopic link of other end fixedly connected with of third spring, the other end of first telescopic link extends to the outside in joint groove.

In order to provide buffer protection for the fixing plate, the limiting mechanism comprises a buffer mechanism, the buffer mechanism is positioned right above the fixing plate, the buffer mechanism comprises a first fixed plate, the top surface of the first fixed plate is fixedly connected with the bottom surface of the load-carrying trolley frame, two sides of the bottom surface of the first fixing plate are fixedly connected with symmetrical second fixing plates, a partition plate is arranged between the two second fixing plates, two ends of the clapboard are fixedly connected with the second fixing plate, the top surface of the clapboard is provided with a buffer rod, the top surface of the buffer rod is provided with a buffer unit, the top surface of the clapboard is fixedly connected with a buffer spring, the top end of the buffer spring is fixedly connected with the bottom surface of the buffer unit, the buffer spring is wrapped on the circumferential side wall of the buffer rod, the bottom surface of baffle is worn to locate by the bottom of buffer beam extends to the below of baffle, buffer gear's both sides are provided with mirror symmetry's canceling release mechanical system.

In order to limit the movement of the movable plate, the buffer unit comprises the movable plate, the bottom surface of the movable plate is fixedly connected to the top surface of the buffer rod, the bottom surface of the movable plate is fixedly connected to the top end of the buffer spring, two limit sliding grooves are respectively formed in one side, close to each other, of the second fixing plate, and the two ends of the movable plate respectively extend to the inner parts of the limit sliding grooves and are connected to the limit sliding grooves in a sliding mode.

In order to reset the rotating plate, reset mechanism includes the arc, the top of arc articulates in the load trolley frame, the arc recess has been seted up to the bottom surface of arc, the inside of arc recess is provided with reset spring, reset spring's top fixed connection is in the arc, reset spring's bottom fixedly connected with arc body of rod, the bottom of the arc body of rod extends to the outside of arc recess and is provided with the joint unit.

In order to facilitate fixing of the first telescopic rod, the clamping unit comprises a rotating plate, the top end of the rotating plate is hinged to the load trolley frame, one side of the rotating plate is hinged to the tail end of the arc-shaped rod body, the clamping groove is formed in one side, close to the rotating plate, of the rotating plate, the clamping groove is formed in the other side of the rotating plate, the clamping groove is formed in the bottom end of the rotating plate, the elastic blocking piece is fixedly connected with the bottom end of the rotating plate, and the elastic blocking piece is located under the clamping groove respectively.

In order to protect the surface of the hook device, the surface of the hook device is provided with an anticorrosive coating.

The utility model discloses a technological effect and advantage:

1. compared with the prior art, through setting up the base, top surface fixed connection base at hook assembly, set up the recess at the base top surface, inside at the recess sets up first spring, at first spring top fixed connection telescopic link, set up clamping mechanism at the telescopic link top surface, at base top surface fixed connection second spring, set up stop gear in load trolley frame bottom surface, in-process that hook assembly rises, provide cushioning effect through first spring and second spring, and simultaneously, buffer mechanism's buffer spring provides cushioning effect when clamping mechanism contacts stop gear, thereby avoid hook assembly top and trolley frame bottom to dash the top the collision and cause hoisting wire rope to be broken.

2. Compared with the prior art, through setting up canceling release mechanical system, drive latch mechanism and rise to canceling release mechanical system contact elasticity separation blade when hook assembly rises, reset spring through canceling release mechanical system plays cushioning effect, makes latch mechanism's first telescopic link slowly move to two canceling release mechanical system's inside to slow down latch mechanism's rate of motion.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of a partial perspective structure of fig. 1 according to the present invention.

Fig. 3 is the schematic diagram of the internal structure of the groove of the present invention.

Fig. 4 is a schematic diagram of the internal structure of the joint groove of the present invention.

Fig. 5 is a schematic view of the working principle structure of the present invention.

Fig. 6 is an enlarged schematic view of the structure of the buffering mechanism of the present invention.

Fig. 7 is a schematic sectional view of the partition board of the present invention.

Fig. 8 is a schematic view of the structure of the limiting sliding chute of the present invention.

Fig. 9 is the schematic diagram of the internal structure of the arc-shaped groove of the present invention.

The reference signs are: 1. a load-carrying trolley frame; 2. a hook device; 3. a hoisting wire rope; 4. a base; 5. a groove; 6. a first spring; 7. a telescopic rod; 8. a second spring; 9. a clamping mechanism; 10. a fixing plate; 11. a clamping groove; 12. a third spring; 13. a first telescopic rod; 14. a limiting mechanism; 15. a buffer mechanism; 16. a first fixing plate; 17. a second fixing plate; 18. a partition plate; 19. a buffer spring; 20. a buffer unit; 21. a buffer rod; 22. moving the plate; 23. a limiting chute; 24. a reset mechanism; 25. an arc-shaped plate; 26. an arc-shaped groove; 27. a return spring; 28. an arc-shaped rod body; 29. a clamping unit; 30. a rotating plate; 31. a card slot; 32. an elastic baffle plate.

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.

Fig. 1-9 show a tower crane is with preventing lifting hook dashes top protection device that falls, including load trolley frame 1, load trolley frame 1's below is provided with hook assembly 2, load trolley frame 1 and hook assembly 2 transmission are connected with hoisting wire rope 3, hook assembly 2's top surface fixedly connected with base 4, base 4's top surface is seted up flutedly 5, the inside of recess 5 is provided with first spring 6, the bottom fixed connection of first spring 6 is in base 4, the top fixed connection of first spring 6 has telescopic link 7, the top of telescopic link 7 extends to the outside of recess 5 and is provided with latch mechanism 9, base 4's top surface fixedly connected with second spring 8, the top of second spring 8 pastes in latch mechanism 9's bottom surface, the circumference lateral wall of telescopic link 7 is located in the package of second spring 8, the bottom surface of trolley frame 1 is provided with stop gear 14 directly over base 4.

Wherein, as shown in fig. 1, fig. 2, fig. 4 and fig. 5, the clamping mechanism 9 includes a fixing plate 10, the bottom surface of the fixing plate 10 is fixedly connected to the top surface of the expansion link 7, the bottom surface of the fixing plate 10 is attached to the top end of the second spring 8, two sides of the fixing plate 10 are provided with symmetrical clamping grooves 11, the insides of the two clamping grooves 11 are respectively provided with a third spring 12, one end of the third spring 12 is fixedly connected to the fixing plate 10, the other end of the third spring 12 is fixedly connected with a first expansion link 13, the other end of the first expansion link 13 extends to the outside of the clamping groove 11 so as to fix the clamping mechanism 9, the clamping mechanism 9 and the hook device 2 ascend together, when the clamping mechanism 9 contacts the limiting mechanism 14, the two first expansion links 13 are compressed, the two first expansion links 13 respectively compress the third spring 12, the two first expansion links 13 contract towards the insides of the clamping grooves 11, finally, the clamping mechanism 9 is moved into the limiting mechanism 14, so that the clamping mechanism is fixed.

Wherein, as shown in fig. 1, fig. 5, fig. 6, fig. 7, fig. 8 and fig. 9, the limiting mechanism 14 includes a buffer mechanism 15, the buffer mechanism 15 is located right above the fixing plate 10, the buffer mechanism 15 includes a first fixing plate 16, a top surface of the first fixing plate 16 is fixedly connected to a bottom surface of the load-carrying trolley frame 1, two sides of the bottom surface of the first fixing plate 16 are fixedly connected with symmetrical second fixing plates 17, a partition plate 18 is arranged between the two second fixing plates 17, two ends of the partition plate 18 are fixedly connected to the second fixing plates 17, a buffer rod 21 is arranged on a top surface of the partition plate 18, a buffer unit 20 is arranged on a top surface of the buffer rod 21, a buffer spring 19 is fixedly connected to a top surface of the partition plate 18, a top end of the buffer spring 19 is fixedly connected to a bottom surface of the buffer unit 20, the buffer spring 19 is wrapped on a circumferential side wall of the buffer rod 21, a bottom end of the buffer rod 21 is penetrated through the bottom surface of the partition plate 18 and extends to a lower portion of the partition plate 18, the both sides of buffer gear 15 are provided with mirror symmetry's canceling release mechanical system 24 to cushion fixed plate 10, fixed plate 10 removes to stop gear 14 inside contact buffer gear 15, and fixed plate 10 contact buffer rod 21 drives buffer rod 21 and slides, and buffer rod 21 moves and drives the flexible deformation of buffer spring 19 through buffer unit 20, thereby cushions the motion of fixed plate 10, avoids the bottom surface of fixed plate 10 direct contact load trolley frame 1.

As shown in fig. 1, 5, 6 and 8, the buffer unit 20 includes a movable plate 22, a bottom surface of the movable plate 22 is fixedly connected to a top surface of the buffer rod 21, the bottom surface of the movable plate 22 is fixedly connected to a top end of the buffer spring 19, the two second fixing plates 17 are respectively provided with a limiting sliding groove 23 at a side close to each other, two ends of the movable plate 22 respectively extend to an inside of the limiting sliding groove 23 and are slidably connected to the limiting sliding groove 23, so as to limit the movement of the movable plate 22, the two second fixing plates 17 are respectively provided with a limiting sliding groove 23 at a side close to each other, so that two ends of the movable plate 22 respectively extend to the inside of the limiting sliding groove 23 to slide, thereby avoiding the movable plate 22 from shifting during movement.

Wherein, as shown in fig. 1, fig. 5 and fig. 9, canceling release mechanical system 24 includes arc 25, the top of arc 25 articulates in load trolley frame 1, arc recess 26 has been seted up to the bottom surface of arc 25, the inside of arc recess 26 is provided with reset spring 27, reset spring 27's top fixed connection is in arc 25, reset spring 27's bottom fixedly connected with arc body of rod 28, the bottom of arc body of rod 28 extends to the outside of arc recess 26 and is provided with joint unit 29, so as to reset joint unit 29, move to stop gear 14 when joint mechanism and press the arc body of rod 28 through joint unit 29, arc body of rod 28 compression reset spring 27, reset spring 27 provides the reaction force and pushes away joint unit 29 to original position, thereby realize the reset action to joint unit 29.

Wherein, as figure 1, fig. 2, fig. 5 and fig. 9 show, joint unit 29 includes rotor plate 30, rotor plate 30's top articulates in load trolley frame 1, one side of rotor plate 30 articulates in the end of the arc-shaped rod body 28, draw-in groove 31 has all been seted up to one side that two rotor plates 30 are close to each other, the equal fixed connection elasticity separation blade 32 in bottom of two rotor plates 30, two elasticity separation blade 32 are located draw-in groove 31 respectively under, so that slow down the clamping mechanism 9 rate of motion, the ascending contact elasticity separation blade 32 of clamping mechanism 9, separate two elasticity separation blade 32, thereby elasticity separation blade 32 receives the extrusion of the arc-shaped rod body 28 and makes the rate of motion of clamping mechanism 9 reduce.

Wherein, as shown in figure 1, the surface of the lifting hook device 2 is provided with an anticorrosive coating so as to protect the surface of the lifting hook device 2, and the anticorrosive coating is arranged on the surface of the lifting hook device 2 so as to prevent the lifting hook device 2 from being exposed outside for a long time and being corroded and damaged.

The utility model discloses the theory of operation: when the lifting hook device 2 is lifted by the lifting steel wire rope 3, the lifting hook device 2 drives the base 4, the first spring 6, the telescopic rods 7, the second spring 8 and the clamping mechanism 9 to ascend, when the clamping mechanism 9 contacts the limiting mechanism 14, the two first telescopic rods 13 are compressed by the two elastic blocking pieces 32, the two first telescopic rods 13 respectively compress the third spring 12, the two first telescopic rods 13 contract towards the inside of the clamping groove 11, the clamping mechanism 9 moves to the inside of the limiting mechanism 14, the fixed plate 10 of the clamping mechanism 9 moves to the inside of the limiting mechanism 14 to contact the buffer mechanism 15, the fixed plate 10 contacts the buffer rod 21 to drive the buffer rod 21 to slide, the buffer rod 21 drives the movable plate 22 to move, the movable plate 22 drives the buffer spring 19 to expand and contract, meanwhile, the first spring 6 and the second spring 8 deform to buffer the movement of the fixed plate 10, and prevent the fixed plate 10 from directly contacting the bottom surface of the small load-carrying frame 1, finally, the two first telescopic rods 13 of the clamping mechanism 9 respectively extend into the clamping grooves 31 for fixing.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a tower crane is with preventing lifting hook dashes top protection device that falls, includes load trolley frame (1), its characterized in that: the lifting hook device (2) is arranged below the load trolley frame (1), the load trolley frame (1) and the lifting hook device (2) are in transmission connection with a lifting steel wire rope (3), the top surface of the lifting hook device (2) is fixedly connected with a base (4), a groove (5) is formed in the top surface of the base (4), a first spring (6) is arranged inside the groove (5), the bottom end of the first spring (6) is fixedly connected to the base (4), the top end of the first spring (6) is fixedly connected with a telescopic rod (7), the top end of the telescopic rod (7) extends to the outside of the groove (5) and is provided with a clamping mechanism (9), the top surface of the base (4) is fixedly connected with a second spring (8), the top end of the second spring (8) is attached to the bottom surface of the clamping mechanism (9), and the second spring (8) is wrapped on the circumferential side wall of the telescopic rod (7), and a limiting mechanism (14) is arranged on the bottom surface of the load-carrying trolley frame (1) right above the base (4).

2. The lifting hook top-rushing and falling prevention protection device for the tower crane according to claim 1, which is characterized in that: clamping mechanism (9) are including fixed plate (10), the bottom surface fixed connection of fixed plate (10) is in the top surface of telescopic link (7), the bottom surface of fixed plate (10) is laminated in the top of second spring (8), symmetrical joint groove (11), two are seted up to the both sides of fixed plate (10) the inside in joint groove (11) all is provided with third spring (12), the one end fixed connection of third spring (12) is in fixed plate (10), the first telescopic link (13) of other end fixedly connected with of third spring (12), the other end of first telescopic link (13) extends to the outside in joint groove (11).

3. The lifting hook top-rushing and falling prevention protection device for the tower crane according to claim 2, characterized in that: the limiting mechanism (14) comprises a buffer mechanism (15), the buffer mechanism (15) is located right above the fixing plate (10), the buffer mechanism (15) comprises a first fixing plate (16), the top surface of the first fixing plate (16) is fixedly connected to the bottom surface of the load trolley frame (1), two sides of the bottom surface of the first fixing plate (16) are fixedly connected with symmetrical second fixing plates (17), a partition plate (18) is arranged between the two second fixing plates (17), two ends of the partition plate (18) are fixedly connected to the second fixing plates (17), the top surface of the partition plate (18) is provided with a buffer rod (21), the top surface of the buffer rod (21) is provided with a buffer unit (20), the top surface of the partition plate (18) is fixedly connected with a buffer spring (19), and the top end of the buffer spring (19) is fixedly connected to the bottom surface of the buffer unit (20), buffer spring (19) package is located the circumference lateral wall of buffer lever (21), the bottom of buffer lever (21) is worn to locate the bottom surface of baffle (18) and is extended to the below of baffle (18), the both sides of buffer gear (15) are provided with mirror symmetry's canceling release mechanical system (24).

4. The lifting hook top-rushing and falling prevention protection device for the tower crane according to claim 3, characterized in that: buffer unit (20) are including moving plate (22), the bottom surface fixed connection of moving plate (22) is in the top surface of buffer beam (21), the bottom surface fixed connection of moving plate (22) is on the top of buffer spring (19), two spacing spout (23) have been seted up respectively to one side that second fixed plate (17) are close to each other, the both ends of moving plate (22) extend to the inside and sliding connection in spacing spout (23) of spacing spout (23) respectively.

5. The lifting hook top-rushing and falling prevention protection device for the tower crane according to claim 3, characterized in that: reset mechanism (24) include arc (25), the top of arc (25) articulates in load trolley frame (1), arc recess (26) have been seted up to the bottom surface of arc (25), the inside of arc recess (26) is provided with reset spring (27), the top fixed connection of reset spring (27) in arc (25), the bottom fixedly connected with arc body of rod (28) of reset spring (27), the bottom of the arc body of rod (28) extends to the outside of arc recess (26) and is provided with joint unit (29).

6. The lifting hook top-rushing and falling prevention protection device for the tower crane according to claim 5, characterized in that: joint unit (29) are including rotor plate (30), the top of rotor plate (30) articulates in load trolley frame (1), one side of rotor plate (30) articulates in the end of the arc body of rod (28), two draw-in groove (31), two have all been seted up to one side that rotor plate (30) are close to each other the equal fixedly connected with elasticity separation blade (32) in bottom of rotor plate (30), two elasticity separation blade (32) are located draw-in groove (31) respectively under.

7. The lifting hook top-rushing and falling prevention protection device for the tower crane according to claim 1, which is characterized in that: and an anticorrosive layer is arranged on the surface of the lifting hook device (2).

Images