CN210313249U - Anti-tipping device of tower crane - Google Patents
Anti-tipping device of tower crane Download PDFInfo
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- CN210313249U CN210313249U CN201921210672.XU CN201921210672U CN210313249U CN 210313249 U CN210313249 U CN 210313249U CN 201921210672 U CN201921210672 U CN 201921210672U CN 210313249 U CN210313249 U CN 210313249U
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Abstract
The utility model discloses a tower crane's anti-tilt device, including just to the base that sets up, connecting seat fixed connection is passed through respectively at the both ends of two bases, encloses between two bases and two connecting seats and establishes formation pointer activity district, and the interpolation is equipped with the pointer guide arm in the pointer activity district, and the horizontal axis is worn to be equipped with in the pointer guide arm to fix, the both ends of horizontal axis respectively with two base sliding connection, the pointer guide arm is the motion of swaing in the pointer activity district, is equipped with at least one stroke stopper on the base, pointer guide arm and stroke stopper intermittent type swing contact. Compared with the prior art, the utility model provides a tower crane's anti-tilt device becomes width of cloth through pointer guide arm and jib loading boom and moves in step, and pointer guide arm realizes the braking with the touch switch contact of stroke limiter, and elastic buffer spare makes the jib loading boom become width of cloth in-process and reduces the resistance, reduces load inertia, prevents that the jib loading boom from turning over backward and avoiding taking place the rigidity between jib loading boom and the top of the tower and strikeing becoming the width of cloth in-process.
Description
Technical Field
The utility model relates to a luffing jib tower crane technical field, in particular to tower crane's anti-tilt device.
Background
The swing arm type tower crane has the structural characteristics of large change of the depression angle of the cargo boom, small tail turning radius, good overall stability and the like; but also has the performance characteristics of large lifting capacity, large lifting height, high lifting speed and the like. The method is the best choice for modern tower group construction operation, narrow space construction operation, urban building dense area construction operation and super high-rise building construction operation. In a working state, due to the action of inertia load and wind load, the crane arm can generate impact with high rigidity with the tower top or tip backwards in the amplitude variation process; at present, in order to prevent a boom from tipping backwards in the amplitude variation process and solve the problem of rigid impact between the boom and a tower top, a backward tilting prevention structure is generally installed in a boom tower crane.
The existing anti-back-tipping structure of the luffing jib tower crane is generally a mechanical spring type anti-back-tipping structure arranged on an A-shaped frame of the luffing jib tower crane, when a jib of the luffing jib tower crane is tipped to a maximum angle, the jib is gradually compressed in the contact process with the anti-back-tipping structure, the anti-back-tipping structure plays a buffering role by virtue of the elasticity of the anti-back-tipping structure and prevents the jib from further tipping backwards, so that the jib is buffered and finally stopped, the jib can be prevented from tipping backwards in the amplitude-variable process, and meanwhile, rigid impact between the jib and the tower top can be avoided. However, in the actual operation process, due to the fatigue problem of the spring, the retroversion angle of the boom sometimes exceeds a set value, so that the retroversion angle is controlled inaccurately, and potential safety hazards are brought to the boom tower crane.
SUMMERY OF THE UTILITY MODEL
For solving above technical problem, the utility model provides a tower crane's anti-tilt device has solved not only can reduce load inertia, prevents that the jib loading boom from toppling backward at the amplitude of change in-process, avoids again having the problem of rigidity impact between jib loading boom and the top of the tower.
The utility model adopts the technical scheme as follows:
the utility model provides an anti-tilt device of tower crane, the key lies in: the device comprises a base which is opposite to the setting, two ends of the base are respectively fixedly connected through connecting seats, two pointer moving areas are formed by enclosing between the base and the two connecting seats, pointer guide rods are inserted in the pointer moving areas, horizontal shafts are fixedly arranged in the pointer guide rods in a penetrating mode, two ends of each horizontal shaft are respectively connected with the two bases in a sliding mode, the pointer guide rods are arranged in the pointer moving areas in a swinging mode, at least one stroke limiter is arranged on the base, and the pointer guide rods are in intermittent swinging contact with the stroke limiters.
The effect of the above scheme is that the pointer type guide rod and the crane boom are connected in the same straight line, so that the amplitude of the swinging motion of the pointer type guide rod in the pointer active area is synchronous with the amplitude variation motion of the crane boom, when the retroversion angle of the crane boom reaches a set value, the pointer type guide rod is contacted with the touch switch of the stroke limiter, the power supply of the amplitude variation mechanism is cut off and the motion is stopped, the retroversion angle of the crane boom is controlled more easily, and the safety is improved.
Preferably, an arc-shaped guide groove is horizontally formed in the inner wall of the base, and two ends of the horizontal shaft respectively extend into the arc-shaped guide grooves which are close to the inner wall of the base and are connected with groove walls of the arc-shaped guide grooves through elastic buffering parts.
The technical scheme has the effects that the elasticity of the mechanical spring is used for buffering and preventing the crane arm from further inclining backwards to exceed a set value, so that the back inclination angle is not well controlled, and the potential safety hazard of the luffing jib tower crane is further reduced.
Preferably, elastic buffer includes that arc guide arm and activity wear to establish globular slider on the arc guide arm, the both ends of arc guide arm respectively with the both sides cell wall fixed connection of arc guide slot, the both ends of horizontal axis respectively with be close to globular slider fixed connection, the cover is equipped with two sections reset spring on the arc guide arm, two sections reset spring is located respectively the both sides of globular slider, two sections reset spring respectively with globular slider with be close to the cell wall fixed connection of arc guide slot.
The double-spring type crane boom has the advantages that the double-spring arrangement can reduce the resistance of the amplitude of the crane boom, reduce the load inertia, prevent the crane boom from tipping backwards in the amplitude changing process, and simultaneously avoid the rigid impact between the crane boom and the tower top.
Preferably, the number of the stroke limiters is two, and the two stroke limiters are respectively arranged on two sides of the pointer type guide rod.
The effect of this scheme can make the jib loading boom be located maximum amplitude of fluctuation and minimum amplitude of fluctuation, all can cut off the amplitude of fluctuation mechanism power and stop action through the stroke stopper, improves the security.
Preferably, the base is an arc square base, the two stroke limiters are arranged on the inner arc surface of the arc square base, the lower part of the pointer type guide rod is just provided with switch starting pieces, and the two switch starting pieces are respectively arranged corresponding to the touch parts of the two stroke limiters and an arc line.
The effect of this scheme is can be unanimous with jib loading boom amplitude variation direction of motion, improves the sensitivity.
Preferably, the inner arc surface of the arc-shaped square seat is provided with arc-shaped guide rails, the two arc-shaped guide rails are provided with the same guide sliding block in a sliding manner, and the guide sliding block is fixedly connected with the lower part of the pointer type guide rod.
The effect of this scheme is that the stability of pointer-type guide arm along with the jib loading boom does the amplitude of fluctuation motion process is improved.
Preferably, the number of the guide sliding blocks is two, the inner side surfaces of the two guide sliding blocks are respectively and fixedly connected with the two side walls of the pointer type guide rod, and the outer side surfaces of the two guide sliding blocks are respectively arranged towards the touch parts of the two stroke limiters.
The effect of this scheme is through the direction slider and the touch switch contact realization braking of stroke stopper, simplifies the structure, realizes the function optimum.
Preferably, the outer wall of the arc square seat is connected with an arc side plate.
The anti-tipping device has the advantages that the anti-tipping device can bear wind load pressure, the influence of the interior of the anti-tipping device is avoided, the service life is prolonged, and the safety performance is improved.
Has the advantages that: compared with the prior art, the utility model provides a tower crane's anti-tilt device becomes width of cloth through pointer type guide arm and jib loading boom and moves in step, reach maximum value and jib loading boom retroversion angle and become when becoming the level, pointer type guide arm realizes the braking with the touch switch contact of stroke stopper, make jib loading boom retroversion angle control more easily, setting through elastomeric buffer, make the jib loading boom become the resistance that the amplitude of cloth in-process reduces the jib loading boom and become the amplitude, reduce load inertia, prevent that the jib loading boom from turning over backward at the amplitude of cloth in-process, can avoid taking place the rigidity impact between jib loading boom and the top of the tower simultaneously, it brings the potential safety hazard to reduce swing arm tower crane, and.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a bottom view of FIG. 1;
fig. 3 is a schematic structural diagram of another embodiment of the present invention;
FIG. 4 is a bottom view of FIG. 2;
FIG. 5 is a schematic view of the present invention mounted on a luffing jib tower crane;
fig. 6 is a right side view of fig. 5.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in detail with reference to the attached tables and the detailed description.
Example 1
As shown in fig. 1, 2, 5 or 6, an anti-tipping device of a tower crane comprises a base 1 which is arranged just right, the base 1 is an arc square seat, the outer wall of the arc square seat is connected with an arc side plate 11, two ends of the two arc square seats are fixedly connected through connecting seats respectively, a pointer moving area 2 is formed between the two arc square seats and the two connecting seats in an enclosing manner, a pointer type guide rod 3 is inserted in the pointer moving area 2, the pointer type guide rod 3 performs a swinging motion in the pointer moving area 2, a horizontal shaft 6 is fixedly penetrated in the pointer type guide rod 3, an arc guide groove 5 is horizontally arranged on the inner wall of the base 1, two ends of the horizontal shaft 6 respectively extend into the arc guide groove 5 which is close to and are connected with the groove wall of the arc guide groove 5 through an elastic buffer 7, and the inner arc surface of the arc square seat is provided with two stroke limiters 4, the two stroke limiters 4 are respectively arranged at two sides of the pointer type guide rod 3, the inner arc surface of the arc-shaped square seat is provided with an arc-shaped guide rail 9, two guide sliders 10 are slidably mounted on the two arc-shaped guide rails 9, the inner side surfaces of the two guide sliders 10 are respectively fixedly connected with two side walls of the pointer type guide rod 3, and the outer side surfaces of the two guide sliders 10 are respectively arranged towards the touch parts of the two stroke limiters 4;
Example 2
As shown in fig. 3, 4, 5 or 6, an anti-tipping device of a tower crane comprises a base 1 which is arranged rightly, the base 1 is an arc-shaped square seat, the outer wall of the arc-shaped square seat is connected with an arc-shaped side plate 11, two ends of the two arc-shaped square seats are fixedly connected through connecting seats respectively, a pointer moving area 2 is formed between the two arc-shaped square seats and the two connecting seats in an enclosing manner, a pointer type guide rod 3 is inserted in the pointer moving area 2, the pointer type guide rod 3 performs a swinging motion in the pointer moving area 2, a horizontal shaft 6 is fixedly penetrated in the pointer type guide rod 3, an arc-shaped guide groove 5 is horizontally arranged on the inner wall of the base 1, two ends of the horizontal shaft 6 respectively extend into the arc-shaped guide groove 5 which is close to and are connected with the groove wall of the arc-shaped guide groove 5 through an elastic buffer 7, and a switch starting part 8 is right, the inner arc surface of the arc-shaped square seat is provided with two stroke limiters 4, the two stroke limiters 4 are respectively arranged at two sides of the pointer type guide rod 3, and the two switch starting pieces 8 are respectively arranged corresponding to the touching parts of the two stroke limiters 4 in the same arc line;
When in use, the utility model is arranged at the lower end of the jib of the luffing jib tower crane, two ends of the arc square base are respectively fixedly connected with the rotary table, the upper part of the pointer type guide rod 3 is fixedly connected with the jib, the pointer type guide rod synchronously performs amplitude variation motion in the pointer active area 2 along with the jib, in the amplitude variation process, the pointer type guide rod 3 drives the horizontal shaft 6 to move in the arc guide groove 5, and two sections of reset springs 73 positioned at two sides of the horizontal shaft 6 are respectively compressed and stretched, so that the jib is buffered by double elasticity, and the jib is prevented from further tilting backwards in the amplitude variation process, rigid impact between the jib and the tower top can be avoided, when the jib of the luffing jib tower crane is raised to the maximum angle, the switch starting part 8 or the guide slide block 10 is contacted with the touch switch of the stroke limiter 4, and the amplitude variation mechanism is, the crane boom can be further prevented from tipping backwards in the amplitude variation process, and the safety is high.
Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and that those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.
Claims (8)
1. An anti-tipping device of a tower crane is characterized in that: including just to base (1) that sets up, two the both ends of base (1) are respectively through connecting seat fixed connection, two enclose between base (1) and two connecting seats and establish and form pointer activity district (2), pointer guide arm (3) are inserted in pointer activity district (2), fixed horizontal axis (6) of wearing to be equipped with in pointer guide arm (3), the both ends of horizontal axis respectively with two base (1) sliding connection, pointer guide arm (3) are in do the motion of swaying in pointer activity district (2), be equipped with at least one stroke stopper (4) on base (1), pointer guide arm (3) with stroke stopper (4) intermittent type sways the contact.
2. The anti-tipping device for a tower crane according to claim 1, wherein: arc guide slot (5) have been seted up to the level on the inner wall of base (1), the both ends of horizontal axis (6) stretch into respectively and are close to in arc guide slot (5), and with the cell wall of arc guide slot (5) passes through elastic buffer spare (7) and connects.
3. The anti-tipping device for a tower crane according to claim 2, wherein: elastic buffer spare (7) include arc guide arm (71) and the activity wears to establish globular slider (72) on arc guide arm (71), the both ends of arc guide arm (71) respectively with the both sides cell wall fixed connection of arc guide slot (5), the both ends of horizontal axis (6) respectively with be close to globular slider (72) fixed connection, the cover is equipped with two sections reset spring (73) on arc guide arm (71), two sections reset spring (73) are located respectively the both sides of globular slider (72), two sections reset spring (73) respectively with globular slider (72) and being close to the cell wall fixed connection of arc guide slot (5).
4. The anti-tipping device for a tower crane according to any one of claims 1 to 3, wherein: the number of the stroke limiters (4) is two, and the two stroke limiters (4) are respectively arranged on two sides of the pointer type guide rod (3).
5. The anti-tipping device for a tower crane according to claim 4, wherein: base (1) is arc square seat, two stroke limiter (4) all set up the intrados of arc square seat, the lower part of pointer guide arm (3) is just being equipped with switch starting member (8), two switch starting member (8) correspond the setting with the arc line with the portion that touches of two stroke limiter (4) respectively.
6. The anti-tipping device for a tower crane according to claim 5, wherein: the inner arc surface of the arc-shaped square seat is provided with arc-shaped guide rails (9), two arc-shaped guide rails (9) are provided with the same guide sliding block (10) in a sliding manner, and the guide sliding block (10) is fixedly connected with the lower part of the pointer type guide rod (3).
7. The anti-tipping device for a tower crane according to claim 6, wherein: the number of the guide sliding blocks (10) is two, the inner side faces of the two guide sliding blocks (10) are fixedly connected with the two side walls of the pointer type guide rod (3) respectively, and the outer side faces of the two guide sliding blocks (10) are arranged towards the touch parts of the two stroke limiters (4) respectively.
8. The anti-tipping device for a tower crane according to any one of claims 5 to 7, wherein: the outer wall of the arc square seat is connected with an arc side plate (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921210672.XU CN210313249U (en) | 2019-07-30 | 2019-07-30 | Anti-tipping device of tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921210672.XU CN210313249U (en) | 2019-07-30 | 2019-07-30 | Anti-tipping device of tower crane |
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| Publication Number | Publication Date |
|---|---|
| CN210313249U true CN210313249U (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921210672.XU Active CN210313249U (en) | 2019-07-30 | 2019-07-30 | Anti-tipping device of tower crane |
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| CN (1) | CN210313249U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115419731A (en) * | 2022-09-20 | 2022-12-02 | 奥工阀门有限公司 | Multifunctional leak-proof forged steel ball valve |
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2019
- 2019-07-30 CN CN201921210672.XU patent/CN210313249U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115419731A (en) * | 2022-09-20 | 2022-12-02 | 奥工阀门有限公司 | Multifunctional leak-proof forged steel ball valve |
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