CN218507423U - Back-tilting prevention device for arm support and boom - Google Patents

Abstract

The utility model discloses a hypsokinesis device and jib loading boom are prevented to hoist and mount technical field's cantilever crane aims at solving the cantilever crane among the prior art and prevents that hypsokinesis device interference killing feature is relatively poor, and the steadiness is lower, the not good problem of in-service use effect. The device comprises a backward tilting prevention mechanism and a lateral deviation correction mechanism; the anti-back-tilting mechanism comprises a limiting plate, a supporting tube and a balancing weight, wherein one end of the supporting tube is fixedly connected with the balancing weight through a connecting piece, and the other end of the supporting tube is provided with a sliding rod; the limiting plate is provided with a slide way and a clamping groove, and the clamping groove is in smooth transition connection with the tail end of the slide way; the lateral deviation correcting mechanism comprises a base and an arc-shaped guide plate group arranged on the base, and a cavity is arranged on the connecting piece; the invention is suitable for a crane boom, can achieve the effect of limiting the lateral deviation of the supporting tube, avoiding the influence of the actual working condition, keeping the slide rod aligned with the slide rail all the time, ensuring that the anti-backward-tilting groove can be smoothly formed, ensuring that the anti-backward-tilting function of the device is not invalid, and has strong anti-interference capability, higher stability and good actual use effect.

Description

Back-tilting prevention device for arm support and boom

Technical Field

The utility model relates to a hoist and mount technical field specifically relates to a hypsokinesis device and jib loading boom are prevented to cantilever crane.

Background

The anti-back-tilting device for the auxiliary arm of the crawler crane is a safety guarantee measure for preventing the auxiliary arm from turning back, and the commonly used anti-back-tilting device for the auxiliary arm in the prior art mainly comprises a sleeve pipe type, a hydraulic oil cylinder, a weight hammer type and the like. Since the back-tilting prevention is a device acting between two movable parts of the main arm and the sub-arm, the problem of entering the groove for preventing back-tilting has been an important prerequisite for safe operation of the back-tilting prevention.

However, the back-tilting prevention device for the arm support is prone to being affected by actual working conditions such as vibration and stress in the actual use process and is laterally deviated, so that the back-tilting prevention front end is not aligned with a slide way on the top section arm of the main arm, the back-tilting prevention front end cannot smoothly enter a groove due to the fact that the back-tilting prevention device is caused to finally lose the back-tilting prevention function, the anti-interference capacity of the back-tilting prevention device is poor, the stability is low, the actual use effect is poor, and the back-tilting prevention device is urgently needed to be improved.

Disclosure of Invention

An object of the utility model is to overcome not enough among the prior art, provide a hypsokinesis device and jib loading boom are prevented to cantilever crane, it is relatively poor to solve current cantilever crane and prevent hypsokinesis device interference killing feature, and the steadiness is lower, the not good problem of in-service use effect.

In order to solve the technical problem, the utility model discloses an adopt following technical scheme to realize:

on the one hand, the utility model provides a hypsokinesis device is prevented to cantilever crane, include: a back-tilting prevention mechanism and a lateral deviation correction mechanism;

the anti-back-tilting mechanism comprises a limiting plate, a supporting tube and a balancing weight, wherein one end of the supporting tube is fixedly connected with the balancing weight through a connecting piece, and the other end of the supporting tube is provided with a sliding rod; the limiting plate is provided with a slide way for the slide rod to slide and a clamping groove for locking the slide rod, and the clamping groove is in smooth transition connection with the tail end of the slide way;

the lateral deviation correcting mechanism comprises a base and an arc-shaped guide plate group arranged on the base, a cavity for the arc-shaped guide plate group to penetrate through is formed in the connecting piece, and the width of the cavity is equal to that of the arc-shaped guide plate group.

Further, the supporting tube comprises an outer tube, an inner tube and a locking assembly; one end of the inner pipe is inserted into the outer pipe and can move relative to the outer pipe along the axis direction, and the locking assembly can enable the inner pipe and the outer pipe to be kept relatively fixed.

Furthermore, the locking assembly comprises a bolt and a clip, the clip is detachably connected with the tail end of the bolt, a plurality of first positioning holes are formed in the inner pipe along the axis direction, and second positioning holes corresponding to the first positioning holes are formed in the two sides of the outer pipe respectively.

Furthermore, one end of the supporting tube is provided with a supporting seat, and the connecting piece is fixedly connected with one end of the supporting tube through the supporting seat.

Furthermore, the arc guide plate group comprises a bottom plate and arc plates arranged on the bottom plate, and at least two arc plates are arranged in parallel.

Furthermore, the arc-shaped guide plate group also comprises a sealing plate arranged between the adjacent arc plates.

Furthermore, the bottom plate is connected with the base through an adjusting component;

the adjusting assembly can enable the relative position between the bottom plate and the base to be adjustable, and enables the bottom plate and the base to be kept relatively fixed after adjustment.

Further, the adjusting part comprises a bolt, a nut, a limiting hole formed in the bottom plate and a strip-shaped hole formed in the base, and the bolt is in threaded connection with the nut after penetrating through the limiting hole and the strip-shaped hole.

On the other hand, the utility model provides a jib loading boom, including foretell jib loading boom hypsokinesis device.

Compared with the prior art, the utility model discloses the beneficial effect who reaches is:

1. the utility model can limit the supporting tube from side deviation by enabling the arc-shaped guide plate group to be always positioned in the cavity of the connecting piece, thereby avoiding the supporting tube from being influenced by actual working conditions, enabling the sliding rod to be always aligned with the slide way, ensuring the backward-tilting prevention to be smoothly inserted into the groove, ensuring the backward-tilting prevention function of the device not to lose efficacy, having strong anti-interference capability, higher stability and good actual use effect;

2. the telescopic degree of the inner pipe in the outer pipe can be adjusted, the inner pipe and the outer pipe are kept relatively fixed through the locking component, and the whole length of the supporting pipe is adjusted, so that the minimum included angle between the main arm and the auxiliary arm can be adjusted, the actual use requirement of the crane boom is met, the parts do not need to be disassembled and replaced, time and labor are saved, the maintenance efficiency is improved, and the using effect is good;

3. the utility model discloses a loosen bolt and nut, make bottom plate and base no longer pressed from both sides tightly fixed, again along the position of the orientation fine setting arc deflector group in bar hole, treat to prevent the hypsokinesis by the back of being put in, screw up bolt and nut again, the completion is fixed with the clamp of base and bottom plate, with this can be so that the fault-tolerant rate of the assembly precision of the machining precision of preventing hypsokinesis hinge point and each part obtains improving, can realize preventing the quick setting of hypsokinesis, ensure to prevent the accurate orbit of going into of hypsokinesis, can normally work, the cantilever crane repair rate has been reduced, the debugging has been improved and the arm efficiency is met, and promote user satisfaction and product reliability.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic structural diagram of an anti-back-tilting mechanism in an arm support anti-back-tilting device according to an embodiment of the present invention;

fig. 2 is a schematic structural view of an arc-shaped guide plate group in the boom backward tilting prevention device according to the embodiment of the present invention;

fig. 3 is a schematic structural diagram of a base in an arm support anti-tilting device according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a limiting plate in the anti-tilting device for a boom according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an arm support anti-back-tilting device in an anti-back-tilting dead-top state according to an embodiment of the present invention;

fig. 6 is a schematic structural view of an arm support anti-back-tilting device provided in an embodiment of the present invention at an initial position;

fig. 7 is a schematic structural diagram of an adjusting assembly in an anti-back-tilting device for a boom according to an embodiment of the present invention in a locked state;

in the figure: 1. a limiting plate; 11. a slideway; 12. a card slot; 2. supporting a pipe; 21. an outer tube; 211. a second positioning hole; 22. an inner tube; 221. a first positioning hole; 23. a bolt; 24. a clip; 3. a balancing weight; 4. a connecting member; 41. a cavity; 5. a slide bar; 6. a supporting base; 7. a base; 8. an arc-shaped guide plate group; 81. a base plate; 82. a circular arc plate; 83. closing the plate; 9. an adjustment assembly; 91. a bolt; 92. a nut; 93. a limiting hole; 94. and (4) strip-shaped holes.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "assembled", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The first embodiment is as follows:

as shown in fig. 1-6, an embodiment of the present invention provides a device for preventing arm support from tilting backwards, including: a back-tilting prevention mechanism and a lateral deviation correction mechanism;

the anti-back-tilting mechanism comprises a limiting plate 1, a supporting tube 2 and a balancing weight 3, wherein one end of the supporting tube 2 is fixedly connected with the balancing weight 3 through a connecting piece 4, and the other end of the supporting tube is provided with a sliding rod 5; the limiting plate 1 is provided with a slideway 11 for the sliding rod 5 to slide and a clamping groove 12 for locking the sliding rod 5, and the clamping groove 12 is connected with the tail end of the slideway 11 in a smooth transition way;

the lateral deviation correcting mechanism comprises a base 7 and an arc-shaped guide plate group 8 arranged on the base 7, a cavity 41 for the arc-shaped guide plate group 8 to penetrate through is formed in the connecting piece 4, and the width of the cavity 41 is equal to that of the arc-shaped guide plate group 8.

During assembly, the limiting plate 1 is welded on the top knuckle arm of the main arm, the supporting tube 2 is hinged on the top knuckle arm of the auxiliary arm, the base 7 is welded on the bottom knuckle arm of the auxiliary arm, and the arc-shaped guide plate group 8 penetrates into the cavity 41 on the connecting piece 4. In the process of preventing backward tilting along with the turning of the lifting arm, the arc guide plate group 8 is in an arc shape, and the circle center of the arc guide plate group is concentric with the hole of the backward tilting prevention hinge point, so that the outer contour of the arc guide plate group cannot interfere with the backward tilting prevention mechanism all the time, and the backward tilting prevention turning is ensured to be smooth. Of course, it is also possible to make the two parts non-concentric, but it is necessary to ensure that the anti-tipping device does not interfere with the anti-tipping device during the tipping process by virtue of the arrangement dimensions.

When the anti-back-tipping device is used for resisting back-tipping, the supporting tube 2, the balancing weight 3 and the connecting piece 4 form a whole, the slide rod 5 on one end of the supporting tube 2 is lapped on the slide way 11 of the limiting plate 1 under the action of gravity center shifting, and then the slide rod 5 slides on the slide way 11 along with the relative rotation of the main arm and the auxiliary arm; when the main arm and the auxiliary arm rotate relatively to a certain degree, the sliding rod 5 slides into the clamping groove 12 along the sliding way 11, at the moment, the sliding rod 5 is locked by the clamping groove 12, and accordingly a triangular stable supporting structure is formed among the main arm, the auxiliary arm and the supporting tube 2, so that the auxiliary arm is supported and cannot tilt backwards.

During the lateral deviation correction, the arc guide plate group 8 is always positioned in the cavity 41 from the initial position of the arm connecting process shown in fig. 5 to the backward tilting prevention track and then to the final backward tilting prevention jacking state shown in fig. 5; when the supporting tube 2 is subjected to the action of external factors to generate deviation, the supporting tube 2 drives the connecting piece 4 to synchronously deviate, and at the moment, because the width of the cavity 41 is equal to that of the arc-shaped guide plate group 8, the connecting piece 4 is limited by the arc-shaped guide plate group 8, so that the deviation cannot occur, the supporting tube 2 is limited together, and the sliding rod 5 is always aligned with the sliding way 11.

In this way, can carry out the lateral deviation to stay tube 2 and correct, make it not receive practical work condition's such as vibrations, stress influence in the course of the work, make its slide bar 5 that serves keep all the time with slide 11 alignment, the guarantee prevents hypsokinesis and can go into the groove smoothly, ensures that the hypsokinesis prevention function of device does not become invalid, and its interference killing feature is strong, and the steadiness is higher, and the in-service use effect is good.

As shown in fig. 1, in the present embodiment, the support tube 2 includes an outer tube 21, an inner tube 22 and a locking assembly; one end of the inner tube 22 is inserted into the outer tube 21 and can move relative to the outer tube 21 along the axial direction, and the locking assembly can keep the inner tube 22 and the outer tube 21 relatively fixed.

Specifically, through the expansion degree of adjustment inner tube 22 in outer tube 21, the rethread locking subassembly makes the two keep relatively fixed, the whole length of adjustable stay tube 2 to minimum contained angle between this adjustable main arm and the auxiliary jib has satisfied the in-service use demand of jib loading boom, and does not need the dismouting to change parts, and its labour saving and time saving has improved maintenance efficiency, excellent in use effect.

Preferably, the locking assembly includes a bolt 23 and a clip 24, the clip 24 is detachably connected to the end of the bolt 23, the inner tube 22 is provided with a plurality of first positioning holes 221 along the axial direction, and two sides of the outer tube 21 are respectively provided with second positioning holes 211 corresponding to the first positioning holes 221.

When the locking device is used, the first positioning hole 221 is aligned with the second positioning holes 211 on the two sides, the bolt 23 penetrates through the aligned first positioning hole 221 and the second positioning hole 211 and is detachably connected with the clamp 24, and therefore locking and fixing of the outer tube 21 and the inner tube 22 can be achieved.

It should be noted that there may be a plurality of bolts 23 for locking and fixing, so as to reduce stress concentration and improve the stability of the device, and the specific number is not limited and can be adjusted accordingly.

As shown in fig. 5 and 6, in the present embodiment, a support seat 6 is provided at one end of the support tube 2, and the connecting member 4 is fixedly connected to one end of the support tube 2 through the support seat 6.

Specifically, the support base 6 is hinged to the top knuckle arm of the sub-arm during assembly, which can improve the structural strength of the anti-back-tilting mechanism near the tilt-hinge point and reduce stress concentration, thereby improving the stability of the device.

Example two:

the embodiment provides a back-tilting prevention device for a boom, which is different from the first embodiment in that an arc guide plate group 8 comprises a bottom plate 81 and arc plates 82 arranged on the bottom plate 81, at least two arc plates 82 are arranged in parallel, and the bottom plate 81 is connected with a base 7 through an adjusting assembly 9; the adjustment assembly 9 enables the relative position between the base plate 81 and the base 7 to be adjusted and enables the base plate 81 and the base 7 to remain relatively fixed after adjustment.

The groove is smoothly opened to prevent backward tilting, and the machining precision and the assembling precision of the main and auxiliary arms are tested. Receive processing condition and structural style to influence, the debugging work of preventing the caster often need invest into a large amount of time and carry out manual intervention adjustment to preventing the caster angle to this guarantees that it goes into the groove smoothly, prevents that the caster can normally work, and it wastes time and energy, and efficiency is lower.

Specifically, the relative position of adjustable bottom plate 81 on base 7 when the assembly to through promoting connecting piece 4 with order about stay tube 2 one end slide bar 5 and prevent that back rake hinge point hole carries out slight rotation as the basic point, with this pendulum slide bar 5, make slide bar 5 and limiting plate 1 keep aliging, then utilize adjusting part 9 to make and keep relatively fixed between bottom plate 81 and the base 7, accomplished the debugging work of preventing the back rake in view of the above, guarantee that it goes into the groove smoothly, can normally work.

Through this mode, can make the fault-tolerant rate that prevents the machining precision of hypsokinesis hinge point and the assembly precision of each part obtain improving, through the position of fine setting arc deflector group 8 when the assembly, can realize preventing the quick alignment of hypsokinesis, ensure to prevent hypsokinesis accurate orbit, can normally work, reduced the cantilever crane rate of reprocessing, improved the debugging and connect arm efficiency to promote user satisfaction and product reliability.

Preferably, as shown in fig. 2, fig. 3 and fig. 7, the adjusting assembly 9 includes a bolt 91, a nut 92, a limiting hole 93 disposed on the bottom plate 81, and a strip-shaped hole 94 disposed on the base 7, and the bolt 91 is threaded with the nut 92 after passing through the limiting hole 93 and the strip-shaped hole 94.

It should be noted that the adjusting assemblies 9 may be provided with a plurality of groups and uniformly arranged on the bottom plate 81, so as to improve the connection stability between the bottom plate 81 and the base 7, and the arrangement positions of the specific groups are not limited and can be adjusted accordingly.

When the position is adjusted, the bolt 91 and the nut 92 are loosened, so that the bottom plate 81 and the base 7 are no longer clamped and fixed by the two, at this time, the bolt 91 also passes through the strip-shaped hole 94, so that the bottom plate 81 is limited, the position of the arc-shaped guide plate group 8 can be finely adjusted along the direction of the strip-shaped hole 94, when the arc-shaped guide plate group 8 moves to a proper position, so that the anti-backward-tilting is quickly swung, the bolt 91 and the nut 92 can be tightened again, so that the bottom plate 81 and the base 7 are clamped and fixed by the two and can not move any more. The adjustable adjusting device is simple in structure, convenient to produce and operate, improves adjusting efficiency and is convenient to use.

Preferably, a flat washer and a spring washer may be further sleeved on the bolt 91 to improve the friction force between the nut 92 and the base 7, thereby reducing the probability of loosening and improving the locking effect.

As shown in fig. 2, in the present embodiment, the arc guide plate group 8 further includes a sealing plate 83 disposed between the adjacent arc plates 82.

Specifically, the sealing plate 83 is preferably arranged at the tail end of the circular arc plate 82, so that the circular arc plate 82 is stably supported, stress concentration is reduced, structural strength is improved, and the circular arc plate 82 is prevented from being broken; but not limited to this, the middle portion or other positions of the circular arc plate 82 may also be provided, and this is not limited specifically here.

Example three:

the embodiment provides a boom, which comprises the boom backward tilting prevention device in the first embodiment or the second embodiment.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (9)

1. A back-tilting prevention device for an arm support is characterized by comprising: a back-tilting prevention mechanism and a lateral deviation correction mechanism;

the anti-backward-tilting mechanism comprises a limiting plate (1), a supporting tube (2) and a balancing weight (3), wherein one end of the supporting tube (2) is fixedly connected with the balancing weight (3) through a connecting piece (4), and the other end of the supporting tube is provided with a sliding rod (5); the limiting plate (1) is provided with a slide way (11) for the slide rod (5) to slide and a clamping groove (12) for locking the slide rod (5), and the clamping groove (12) is connected with the tail end of the slide way (11) in a smooth transition manner;

the lateral deviation correction mechanism comprises a base (7) and an arc-shaped guide plate group (8) arranged on the base (7), a cavity (41) for the arc-shaped guide plate group (8) to penetrate through is formed in the connecting piece (4), and the width of the cavity (41) is equal to that of the arc-shaped guide plate group (8).

2. The boom back-tilting prevention device according to claim 1, characterized in that the support tube (2) comprises an outer tube (21), an inner tube (22) and a locking assembly; one end of the inner pipe (22) is inserted into the outer pipe (21) and can move relative to the outer pipe (21) along the axial direction, and the locking assembly can enable the inner pipe (22) and the outer pipe (21) to be kept relatively fixed.

3. The boom backward tilting prevention device of claim 2, wherein the locking assembly comprises a bolt (23) and a clip (24), the clip (24) is detachably connected with the end of the bolt (23), the inner tube (22) is provided with a plurality of first positioning holes (221) along the axial direction, and two sides of the outer tube (21) are respectively provided with a second positioning hole (211) corresponding to the first positioning hole (221).

4. The boom backward tilting prevention device according to claim 1, wherein one end of the support tube (2) is provided with a support seat (6), and the connecting member (4) is fixedly connected with one end of the support tube (2) through the support seat (6).

5. The boom backward tilting prevention device according to claim 1, wherein the arc guide plate group (8) comprises a bottom plate (81) and arc plates (82) arranged on the bottom plate (81), and at least two arc plates (82) are arranged in parallel with each other.

6. The boom back-tilting prevention device according to claim 5, wherein the arc guide plate group (8) further comprises a sealing plate (83) arranged between adjacent arc plates (82).

7. The boom back-tilting prevention device of claim 5, characterized in that the base plate (81) is connected with the base (7) through an adjusting component (9);

the adjusting assembly (9) can enable the relative position between the bottom plate (81) and the base (7) to be adjustable, and enables the bottom plate (81) and the base (7) to be kept relatively fixed after adjustment.

8. The boom backward tilting prevention device according to claim 7, wherein the adjusting component (9) comprises a bolt (91), a nut (92), a limiting hole (93) arranged on the bottom plate (81) and a strip-shaped hole (94) arranged on the base (7), and the bolt (91) passes through the limiting hole (93) and the strip-shaped hole (94) and then is in threaded connection with the nut (92).

9. A boom comprising the boom back tilting prevention device of any one of claims 1 to 8.

Images