CN212315348U

CN212315348U - Tower crane transfinites and prevents device that topples

Info

Publication number: CN212315348U
Application number: CN202021616871.3U
Authority: CN
Inventors: 张言华; 张剑; 张璐; 张熠晖
Original assignee: Anshun Zhongan Installation Engineering Co ltd
Current assignee: Anshun Zhongan Installation Engineering Co ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-01-08
Anticipated expiration: 2030-08-06

Abstract

The utility model provides a tower crane overlimit anti-overturning device, include pendant, base and all set up amplification mechanism and the monitoring switch on the base, the base sets up on the tower crane and follows the tower crane and take place the slope together, the pendant is connected with amplification mechanism and the pendant all the time with the direction of gravity syntropy, and relative motion between base and the pendant carries out the motion through amplification mechanism and enlargies to actuating mechanism touching monitoring switch through in the amplification mechanism realizes the early warning of overlimit through monitoring switch. The utility model utilizes the relative movement between the base and the pendant to further realize the detection of the verticality deviation of the tower body, solves the problem that the torque limiter can not detect the inclination of the tower body caused by the settlement of the foundation, the loosening of the bolt and the abrasion of the mechanism, and makes up the short plate existing in the traditional torque limiter; through the utility model discloses a tower crane transfinites and prevents the slope that device can detect tower crane upper portion and tower crane lower part emergence effectively, realizes comprehensive detection tower crane slope.

Description

Tower crane transfinites and prevents device that topples

Technical Field

The utility model relates to a tower crane technical field, concretely relates to tower crane transfinites anti-overturning device.

Background

For the perpendicularity detection of the tower crane, a common technical means in the prior art is to detect the moment borne by the tower crane by adopting a moment limiter, to timely perform early warning, and to prevent the tower crane from the accident of overturning the tower crane caused by the out-of-limit perpendicularity. Because the moment limiter detects the metal deformation of the upper part (namely the part above the crane arm) of the tower crane, the moment limiter can not be effectively detected under the following conditions.

(1) When the foundation of the tower crane has uneven settlement, the tower crane inclines towards the side with large settlement. When the crane arm transfers and transports objects on the inclined side, the tower crane is inclined to cause the verticality deviation of the center point of the tower body, so that the moment is increased.

(2) The standard section connecting bolt of the tower crane is loosened, and when the tower crane hangs objects in the opposite direction of the loosened bolt, the tower crane generates serious inclination to cause the moment load to exceed the standard.

(3) Some mechanisms of the tower crane determining the perpendicularity deviation of the tower crane are abraded, so that the perpendicularity of the tower crane is seriously exceeded when the tower crane lifts objects.

Because the conventional torque limiter for the three situations cannot effectively detect the three situations, and the situations also have potential safety hazards of overturning of the tower crane, the effective detection of the torque limiter is very necessary.

In conclusion, an over-limit and overturn-preventing device for a tower crane is urgently needed to solve the problems in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a tower crane transfinites anti-overturning device, concrete technical scheme as follows:

the utility model provides a tower crane ultralimit anti-overturning device, includes pendant, base and all sets up amplification mechanism and the monitoring switch on the base, the base sets up on the tower crane and follows the tower crane and take place the slope together, the pendant is connected with amplification mechanism and the pendant all the time with the direction of gravity syntropy, and relative motion between base and the pendant carries out the motion through amplification mechanism and enlargies to reach the monitoring switch through the actuating mechanism touching in the amplification mechanism, realize ultralimit early warning through monitoring switch.

Preferably, in the above technical scheme, the amplification mechanism comprises at least two stages of rotating shafts, and adjacent rotating shafts are transmitted through a gear and amplify the relative motion between the base and the pendant; the pendant is connected with the rotating shaft at the bottommost layer of the motion amplification direction, and the rotating shaft at the bottommost layer is driven to rotate by the relative motion between the base and the pendant.

Preferred among the above technical scheme, mechanism of amplification is including all rotating first pivot, second pivot and the third pivot of setting up on the base, and third pivot, first pivot and second pivot set gradually from bottom to top, the third pivot is connected with the pendant, through fourth gear and third gear engagement transmission between third pivot and the first pivot, through first gear and second gear engagement transmission between first pivot and the second pivot.

Preferably, in the above technical solution, the fourth gear is disposed on a third rotating shaft, the third gear and the first gear are both disposed on the first rotating shaft, and the second gear is disposed on the second rotating shaft; the reference circle diameter of the fourth gear is larger than that of the third gear, and the reference circle diameter of the first gear is larger than that of the second gear.

Preferably in the above technical scheme, the fourth gear is arranged at the end of the third rotating shaft, the pendant comprises a first pendant and a second pendant, the second pendant is connected with the fourth gear, and the first pendant is connected with one end of the third rotating shaft, which is far away from the fourth gear.

Preferably, in the above technical scheme, the executing mechanism includes a touch ring, the touch ring is arranged on the rotating shaft at the topmost layer in the motion amplification direction and rotates along with the rotating shaft, a section of protrusion is arranged on the outer contour of the touch ring, and the protrusion touches the monitoring switch, so that early warning is realized; the touch ring can be movably arranged relative to the rotating shaft at the topmost layer in the motion amplification direction, so that the stroke between the adjusting protrusion and the monitoring switch is realized.

Preferably, in the above technical solution, the executing mechanism further includes an executing rotating wheel and a positioning bolt, the executing rotating wheel is disposed on the rotating shaft at the top layer in the motion amplifying direction, the touch ring is movably sleeved on the outer contour of the executing rotating wheel, and the touch ring and the executing rotating wheel are positioned by the positioning bolt.

Preferably in the above technical scheme, the execution rotating wheel is a gear, a threaded hole for positioning is formed in the touch ring, and the positioning bolt penetrates through the threaded hole and is inserted into the tooth groove of the execution rotating wheel to realize positioning.

Preferred among the above technical scheme, the pivot both ends of motion amplification direction top layer all set up actuating mechanism, monitoring switch corresponds the setting with actuating mechanism, and protruding dislocation set on the touching circle in two actuating mechanism realizes carrying out the two-stage early warning to the tower crane slope through two actuating mechanism.

Preferably, in the above technical solution, the rotation shaft at the topmost layer in the motion amplification direction is a second rotation shaft; the monitoring switch is a touch switch; the anti-overturning device is arranged at the top of the tower crane.

Use the technical scheme of the utility model, following beneficial effect has:

(1) the utility model discloses a tower crane overrun anti-overturning device, including mechanism of amplification, monitoring switch and the pendant that is syntropy with the direction of gravity all the time, the tower crane overrun anti-overturning device of the utility model is arranged at the top of the tower crane, utilizes the relative motion between base and pendant and then realizes detecting the verticality deviation of the tower body, solves the problem that the moment limiter can't detect the tower body slope because of foundation settlement, bolt looseness and mechanism wear, remedies the short slab that the traditional moment limiter exists; through the utility model discloses a tower crane transfinites and prevents device that topples can detect the slope that tower crane upper portion (above the jib loading boom) and tower crane lower part (below the jib loading boom) take place effectively, realizes comprehensive detection tower crane slope, stops the tower crane and appears the possibility that the slope transfinites.

(2) The utility model discloses a tower crane transfinites anti-overturning device, amplification mechanism include at least two-stage pivot, carry out the transmission and move the relative motion between base and the pendant through the gear between the adjacent pivot and enlarge, realize enlargiing the slight motion between pendant and base (the tower crane promptly) through gear drive, the precision that detects is high, the straightness deviation that hangs down that accurate reaction tower body appears, and the transmission is reliable simultaneously.

(3) The utility model discloses a tower crane transfinites anti-overturning device, actuating mechanism include touching circle, execution runner and positioning bolt, and on the outline of execution runner was located to the touching snare, positioning bolt realized will touching circle and execution runner between fix a position, and the touching circle can be according to different tower crane equipment, and stroke between different mounted position adjusted and the monitoring switch satisfies in the trade or the standard requirement of national standard to the detection of the tower crane straightness that hangs down.

(4) The utility model discloses a tower crane overtime anti-overturning device all sets up actuating mechanism at the pivot both ends of motion amplification direction top layer, sets up the second grade early warning, and the first order early warning can be used for the suggestion operation personnel tower crane slope to be about to transfinite, and the second grade early warning can be used for between cut off the power of tower crane, prevents the occurence of failure effectively.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:

fig. 1 is a schematic structural view of a first viewing angle of the overturn preventing device of the present invention;

fig. 2 is a schematic structural view of the anti-overturning device according to the present invention at a second viewing angle;

the device comprises a base 1, a base 2, a first pendant 3, a first gear 4, a first rotating shaft 5, a second gear 6, a touch ring 7, an execution rotating wheel 8, a touch switch 9, a second rotating shaft 10, a third gear 11, a fourth gear 12, a third rotating shaft 13, a second pendant 14 and a positioning bolt.

Detailed Description

The embodiments of the invention will be described in detail hereinafter with reference to the accompanying drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.

Example 1:

referring to fig. 1-2, a tower crane overrun anti-overturning device, includes pendant, base 1 and all sets up mechanism of amplification and the monitoring switch on base 1, base 1 sets up on the tower crane and follows the tower crane and take place the slope together, the pendant is connected with mechanism of amplification and the pendant all the time with the direction of gravity syntropy, and the relative motion between base 1 and the pendant is enlarged through mechanism of amplification motion to touching the monitoring switch through the actuating mechanism among the mechanism of amplification, realize overrun early warning through the monitoring switch.

The amplification mechanism comprises at least two stages of rotating shafts, and adjacent rotating shafts are transmitted through gears and amplify the relative motion between the base and the pendant; the pendant is connected with the rotating shaft at the bottommost layer of the motion amplification direction, and the rotating shaft at the bottommost layer is driven to rotate by the relative motion between the base and the pendant.

Amplification mechanism sets up first pivot 4, second pivot 9 and third pivot 12 on base 1 including all rotating, and third pivot 12, first pivot 4 and second pivot 9 set gradually by lower up, third pivot 12 is connected with the pendant, through fourth gear 11 and the meshing transmission of third gear 10 between third pivot 12 and the first pivot 4, through the meshing transmission of first gear 3 and second gear 5 between first pivot 4 and the second pivot 9.

The fourth gear 11 is arranged on a third rotating shaft 12, the third gear 10 and the first gear 3 are both arranged on the first rotating shaft 4, and the second gear 5 is arranged on the second rotating shaft 9; the pitch circle diameter of the fourth gear 11 is larger than that of the third gear 10, the pitch circle diameter of the first gear 3 is larger than that of the second gear 5, and the gear modules which are meshed with each other are the same.

The fourth gear 11 is arranged at the end of the third rotating shaft 12, the pendant comprises a first pendant 2 and a second pendant 13, the second pendant 13 is connected with the fourth gear 11, and one end of the first pendant 2, which is far away from the fourth gear 11, is connected with one end of the third rotating shaft 12.

The actuating mechanism comprises a touch ring 6, the touch ring 6 is arranged on a rotating shaft at the top layer of the motion amplification direction and rotates along with the rotating shaft, a section of protrusion is arranged on the outer contour of the touch ring 6, and therefore early warning is achieved through protruding a touch monitoring switch. The touch ring 6 can be movably arranged relative to the rotating shaft at the topmost layer in the motion amplification direction, so that the stroke between the adjusting protrusion and the monitoring switch is realized.

Furthermore, the executing mechanism further comprises an executing rotating wheel 7 and a positioning bolt 14, the executing rotating wheel 7 is arranged on the rotating shaft at the top layer in the motion amplifying direction, the touch ring 6 is movably sleeved on the outer contour of the executing rotating wheel 7, and the executing rotating wheel 7 and the touch ring are positioned through the positioning bolt 14.

In this embodiment, the execution rotating wheel 7 is preferably a gear, the touch ring 6 is provided with a threaded hole for positioning, and the positioning bolt 14 penetrates through the threaded hole and is inserted into the tooth groove of the execution rotating wheel to realize positioning.

The pivot both ends of motion amplification direction top layer all set up actuating mechanism, monitoring switch corresponds the setting with actuating mechanism, and the protruding dislocation set on the touching circle 6 among two actuating mechanism realizes carrying out the two-stage early warning to the tower crane slope through two actuating mechanism.

The two-stage early warning can require to set up according to this area to the tower crane gradient, and wherein the first order early warning needs attention for suggestion operation personnel tower crane slope has reached the setting value, and the second level early warning is for if operation personnel do not notice on the basis of first order early warning has transfinited, directly falls the power of tower crane when the gradient reaches the maximum value, prevents accident's emergence.

Referring to fig. 1, it can be seen that the protrusions on the two touch rings in the drawing are arranged in a staggered manner, when the protrusion on the left touch ring in fig. 1 triggers the monitoring switch, the first-level early warning trigger is triggered, and the monitoring switch is always in an alarm state along with the increase of the inclination; when the touch ring on the right side in the figure 1 triggers the corresponding monitoring switch, the second-stage early warning is triggered, and at this time, the power supply of the tower crane can be directly cut off.

The embodiment provides a setting method of two-stage early warning, the first-stage early warning is set as the corresponding inclination when the tower crane lifting moment reaches 90% of the rated moment, and the second-stage early warning is set as the corresponding inclination when the tower crane lifting moment reaches 110% of the rated moment. Of course, the setting can be performed by those skilled in the art according to the industry specification or the corresponding national standard.

In this embodiment, the rotation shaft at the top layer in the motion amplification direction is preferably the second rotation shaft 9; the monitoring switch is a touch switch 8, and the touch switch is preferably a normally open switch.

The installation and positioning of each gear on the rotating shaft in the embodiment can adopt a common mode in the mechanical field, for example: the retainer ring is arranged or a positioning pin shaft (positioning bolt) is adopted, or a key connection is adopted.

The technical scheme of the embodiment is specifically as follows:

the anti-overturning device is arranged at the top of the tower crane, is adjusted according to the actual condition of the tower crane, and adjusts the position of the touch ring through the positioning bolt, so that the actuating mechanisms on the two sides respectively correspond to the first-stage early warning and the second-stage early warning; if the tower crane is inclined beyond the limit (no matter the upper part of the tower crane or the standard knot at the lower part of the tower crane is inclined), the first pendant and the second pendant can drive the touch ring to move to trigger the corresponding monitoring switch.

The overturn prevention device in the embodiment can be used together with the moment limiter in the prior art, the overturn prevention device and the moment limiter cannot influence each other, and the overturn prevention device in the embodiment can make up for the defects of the moment limiter. Certainly, the anti-overturning device in the embodiment can be used independently, and the requirement on the detection of the perpendicularity of the tower crane is met.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a tower crane transfinites and prevents device that topples, a serial communication port, include pendant, base (1) and all set up mechanism of amplification and the monitoring switch on base (1), base (1) sets up on the tower crane and follows the tower crane and take place the slope together, the pendant is connected with mechanism of amplification and the pendant all the time with the direction of gravity syntropy, and relative motion between base (1) and the pendant carries out the motion through mechanism of amplification and enlargies to actuating mechanism touching monitoring switch through in the mechanism of amplification realizes transfinites the early warning through the monitoring switch.

2. The tower crane overrun anti-overturn device according to claim 1, wherein the amplification mechanism comprises at least two stages of rotating shafts, and adjacent rotating shafts are driven by gears to amplify the relative movement between the base and the pendant; the pendant is connected with the rotating shaft at the bottommost layer of the motion amplification direction, and the rotating shaft at the bottommost layer is driven to rotate by the relative motion between the base and the pendant.

3. The tower crane overrun anti-overturning device according to claim 2, wherein the amplifying mechanism comprises a first rotating shaft (4), a second rotating shaft (9) and a third rotating shaft (12) which are rotatably arranged on the base (1), the third rotating shaft (12), the first rotating shaft (4) and the second rotating shaft (9) are sequentially arranged from bottom to top, the third rotating shaft (12) is connected with the pendant, the third rotating shaft (12) is in meshing transmission with the first rotating shaft (4) through a fourth gear (11) and a third gear (10), and the first rotating shaft (4) is in meshing transmission with the second rotating shaft (9) through a first gear (3) and a second gear (5).

4. The tower crane overrun anti-overturning device according to claim 3, wherein the fourth gear (11) is arranged on a third rotating shaft (12), the third gear (10) and the first gear (3) are both arranged on the first rotating shaft (4), and the second gear (5) is arranged on the second rotating shaft (9); the pitch circle diameter of the fourth gear (11) is larger than that of the third gear (10), and the pitch circle diameter of the first gear (3) is larger than that of the second gear (5).

5. The tower crane overrun anti-overturning device according to claim 4, characterized in that the fourth gear (11) is arranged at the end of the third rotating shaft (12), the pendant comprises a first pendant (2) and a second pendant (13), the second pendant (13) is connected with the fourth gear (11), and one end of the first pendant (2) and the third rotating shaft (12), which is far away from the fourth gear (11), is connected.

6. The tower crane overrun anti-overturning device according to any one of claims 3 to 5, wherein the actuating mechanism comprises a touch ring (6), the touch ring (6) is arranged on a rotating shaft at the topmost layer in the motion amplification direction and rotates along with the rotating shaft, a section of protrusion is arranged on the outer contour of the touch ring (6), and the protrusion touches a monitoring switch to realize early warning; the touch ring (6) can be movably arranged relative to the rotating shaft at the topmost layer in the motion amplification direction, so that the stroke between the adjusting protrusion and the monitoring switch is realized.

7. The tower crane overrun anti-overturn device according to claim 6, wherein the executing mechanism further comprises an executing rotating wheel (7) and a positioning bolt (14), the executing rotating wheel (7) is arranged on a rotating shaft at the topmost layer in the motion amplification direction, the touch ring (6) is movably sleeved on the outer contour of the executing rotating wheel (7) and positioned between the executing rotating wheel and the touch ring through the positioning bolt (14).

8. The tower crane overrun anti-overturning device according to claim 7, wherein the execution rotating wheel (7) is a gear, a threaded hole for positioning is formed in the touch ring (6), and the positioning bolt (14) penetrates through the threaded hole and is inserted into a tooth groove of the execution rotating wheel to realize positioning.

9. The tower crane overrun anti-overturn device according to claim 8, wherein two ends of the rotating shaft at the topmost layer in the motion amplification direction are provided with actuating mechanisms, the monitoring switch and the actuating mechanisms are correspondingly arranged, and the two actuating mechanisms are used for realizing two-stage early warning on the inclination of the tower crane due to the staggered arrangement of the protrusions on the touch ring (6).

10. The tower crane overrun anti-overturning device according to claim 9, wherein the rotation shaft at the topmost layer in the motion amplification direction is a second rotation shaft (9); the monitoring switch is a touch switch (8); the anti-overturning device is arranged at the top of the tower crane.