阅读说明：本技术 一种装卸木材用防倾斜紧固抓木机 (Anti-tilting fastening wood grabbing machine for loading and unloading wood ) 是由 常海 于 2021-08-24 设计创作，主要内容包括：本发明涉及装卸设备技术领域,且公开了一种装卸木材用防倾斜紧固抓木机,包括吊臂,所述吊臂的底端活动连接有横杆,所述横杆的两端固定连接有活塞筒,所述活塞筒的底端活动连接有活塞杆,所述活塞杆的底端固定连接有辅助爪,所述横杆的两端固定安装有抓斗轴,且通过抓斗轴活动安装有抓斗,所述抓斗弧形外凸面的中间固定连接有固定块,所述固定块顶端固定连接有伸缩杆,所述横杆的中间开设有平衡腔。本发明通过利用两侧辅助爪顶端活塞筒内的气压差来自动调整木材的中心位置,使其始终处于吊臂的下方,从而保证了吊臂始终处于木材的中间位置,使抓木机司机在向运输车内下放木材时保证装车的居中性,避免因装车倾斜而产生安全隐患。(The invention relates to the technical field of loading and unloading equipment, and discloses an anti-tilting fastening log grab machine for loading and unloading wood, which comprises a suspension arm, wherein the bottom end of the suspension arm is movably connected with a cross rod, two ends of the cross rod are fixedly connected with piston cylinders, the bottom end of each piston cylinder is movably connected with a piston rod, the bottom end of each piston rod is fixedly connected with an auxiliary claw, two ends of the cross rod are fixedly provided with grab bucket shafts, grab buckets are movably arranged through the grab bucket shafts, the middle of the arc-shaped outer convex surfaces of the grab buckets is fixedly connected with a fixed block, the top ends of the fixed blocks are fixedly connected with telescopic rods, and the middle of the cross rod is provided with a balance cavity. According to the invention, the central position of the timber is automatically adjusted by utilizing the air pressure difference in the piston cylinders at the top ends of the auxiliary claws at the two sides, so that the timber is always positioned below the suspension arm, the suspension arm is always positioned in the middle position of the timber, the centering performance of loading is ensured when a driver of a wood grab puts the timber into a transport vehicle, and the potential safety hazard caused by the inclination of the loading vehicle is avoided.)

1. The utility model provides a loading and unloading timber is with preventing fastening log grab that inclines, includes davit (1), the bottom swing joint of davit (1) has horizontal pole (2), its characterized in that: the device comprises a cross rod (2), piston cylinders (3) are fixedly connected to two ends of the cross rod (2), a piston rod (4) is movably connected to the bottom of the piston cylinder (3), auxiliary claws (5) are fixedly connected to the bottom of the piston rod (4), grab bucket shafts (6) are fixedly mounted to two ends of the cross rod (2), grab buckets (7) are movably mounted through the grab bucket shafts (6), fixed blocks (8) are fixedly connected to the middles of the arc-shaped outer convex surfaces of the grab buckets (7), movable shafts are fixedly mounted to the top ends of the fixed blocks (8) and movably connected with telescopic rods (9) through the movable shafts, the telescopic rods (9) are movably connected with the cross rod (2), a balance cavity (10) is formed in the middle of the cross rod (2), an air valve (11) is fixedly connected to the top ends of the piston rod (4) and is connected with an air pump through the air valve (11), and a moving port is formed in the top end of the middle of the balance cavity (10), and a balance plug (12) is movably connected at the moving port, and wood (13) is movably connected in the middle of the grab bucket (7).

2. The anti-tipping fastening log grab machine for loading and unloading logs as claimed in claim 1, wherein: the auxiliary claw (5) is arc-shaped with a high center and two low sides, and can move up and down along the piston cylinder (3) under the drive of the piston rod (4).

3. The anti-tipping fastening log grab machine for loading and unloading logs as claimed in claim 1, wherein: and two ends of the balance cavity (10) are communicated with the interior of the piston rod (4).

4. The anti-tipping fastening log grab machine for loading and unloading logs as claimed in claim 1, wherein: two ends of the balance plug (12) extend into the balance cavity (10), and the top end of the middle of the balance plug is connected with the suspension arm (1).

5. The anti-tipping fastening log grab machine for loading and unloading logs as claimed in claim 1, wherein: the piston cylinders (3) are arranged at two ends of the outer side of the grab bucket (7), and the distance between the two auxiliary claws (5) is larger than the width of the grab bucket (7).

Technical Field

The invention relates to the technical field of loading and unloading equipment, in particular to an anti-tilting fastening wood grabbing machine for loading and unloading wood.

Background

The wood grabbing machine is a timber grabbing machine, generally developed by a hydraulic excavator, and the greatest difference between the wood grabbing machine and a common excavator is the difference of a front end working device, namely the difference of working purposes, and the front end of the wood grabbing machine is a wood grabbing machine which is mainly used for loading, unloading and carrying wood, timber, reed, straw and various strip-shaped materials.

The common grab bucket of the log grab machine has the advantages that wood can move in a loading and unloading process due to disorder when the wood is stacked, so that grabbing is not facilitated, if a grabbing point is not located in the middle of the wood in an operation process, the wood can incline, a driver of the log grab machine can misjudge a loading position, the loading position is neutral when the log grab machine is placed down, and potential safety hazards are caused due to the fact that the loading is inclined; due to the fact that ground woods are placed in disorder and the wood alignment degree is poor, when the existing wood grabbing machine grabs the ground woods, the center positions of a plurality of woods are not easy to find and clamp simultaneously, the wood clamping directions of different clamped positions are inconsistent in disorder after the woods are grabbed, the grab bucket is damaged due to long-term pressing of the inclined woods, and the service life of the grab bucket is influenced; the anterior segment log grab of log grab is cyclic annular when snatching timber, forms great space in the middle of the tongs in order to snatch more timber, but when the operation later stage ground timber surplus is less, the log grab of major diameter snatchs the difficulty to scattered a small amount of timber on ground, need rely on artifical transport remaining a small amount of timber this moment, has the problem of loading and unloading later stage inefficiency.

Disclosure of Invention

Aiming at the defects of the prior art in the use process of the existing wood grabbing machine, the invention provides the anti-inclination fastening wood grabbing machine for loading and unloading wood, which has the advantages of stable wood grabbing, convenience in adjusting the wood grabbing amount and automatic adjustment of the gravity center position to prevent inclination, and solves the technical problems that the wood inclination in the prior art has potential safety hazards, scattered wood grabbing is difficult and the like.

The invention provides the following technical scheme: an anti-tilting fastening wood grabbing machine for loading and unloading wood comprises a suspension arm, the bottom end of the suspension arm is movably connected with a cross rod, the two ends of the cross rod are fixedly connected with piston cylinders, the bottom ends of the piston cylinders are movably connected with piston rods, the bottom end of the piston rod is fixedly connected with an auxiliary claw, two ends of the cross rod are fixedly provided with a grab shaft, a grab bucket is movably arranged through a grab bucket shaft, a fixed block is fixedly connected in the middle of the arc-shaped outer convex surface of the grab bucket, a movable shaft is arranged at the top end of the fixed block, and is movably connected with a telescopic rod through a movable shaft, the telescopic rod is movably connected with a cross rod, the middle of the cross rod is provided with a balance cavity, the top end of the piston rod is fixedly connected with an air valve, and an air pump is connected through an air valve, a moving opening is formed in the top end in the middle of the balance cavity, a balance plug is movably connected to the moving opening, and wood is movably connected to the middle of the grab bucket.

Preferably, the auxiliary claw is in an arc shape with a high center and two low sides, and can move up and down along the piston cylinder under the driving of the piston rod.

Preferably, both ends of the balance cavity are communicated with the interior of the piston rod.

Preferably, two ends of the balance plug extend into the balance cavity, and the top end of the middle of the balance plug is connected with the suspension arm.

Preferably, the piston cylinder is arranged at two ends of the outer side of the grab bucket, and the distance between the two auxiliary claws is larger than the width of the grab bucket.

The invention has the following beneficial effects:

1. the invention automatically adjusts the center position of the wood by utilizing the air pressure difference in the piston cylinders at the top ends of the auxiliary claws at two sides to enable the wood to be always positioned below the suspension arm, when the wood grabber grabs the wood and does not grab the center position of the wood, the belt is lifted and transferred, the strength difference of the auxiliary claws at two sides is generated by pushing the inclined wood upwards, the degree of pushing the auxiliary claw upwards by the inclined wood is large, the pressure in the balance cavity at the side and the piston cylinder is high, and the balance plug in the balance cavity and the suspension arm in the middle of the balance cavity are pushed to move towards the center side of the wood, so that the suspension arm is always positioned at the middle position of the wood, the centering of loading is ensured when the wood grabber driver puts the wood into the transport vehicle, and the potential safety hazard caused by the inclination of the loading vehicle is avoided.

2. According to the invention, the auxiliary claws controlled by the air pump are arranged on the two sides of the grab bucket, after the wood grabber falls to grab the wood, the air pump is controlled to charge air into the piston cylinder to press the auxiliary claws downwards, so that the wood in the grab bucket is supported by the original single point force at the bottom end of the grab bucket, and the three points of the downward pressure of the auxiliary claws above the bottom end of the grab bucket and the two sides of the grab bucket have a common clamping effect, so that the process of lifting and transferring the wood is safer and more reliable, meanwhile, for the small amount of scattered wood left on the ground in the later loading and unloading period, the large space in the grab bucket can be reduced through the process of pressing the auxiliary claws, so that the processes of grabbing and transferring the small amount of wood can be stably carried out, and the problem that the scattered wood in the later loading and unloading period is difficult to carry is avoided.

3. According to the invention, the auxiliary claws at the two sides of the grab bucket are utilized to limit the grab bucket to the inclined wood, so that the auxiliary claws reversely press the upward inclined side of the wood under the action of the air pressure in the balance cavity, the damage to the bottom of the grab bucket caused by the further upward inclination of the inclined wood is prevented, the damage caused by the inclination of the wood when the grab bucket grabs messy wood is reduced, and the service life of the grab bucket of the log grab machine is prolonged.

Drawings

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

FIG. 2 is a side schematic view of the grab bucket configuration of the present invention;

fig. 3 is a schematic diagram of the self-adjusting principle of the present invention.

In the figure: 1. a suspension arm; 2. a cross bar; 3. a piston cylinder; 4. a piston rod; 5. an auxiliary claw; 6. a grab shaft; 7. a grab bucket; 8. a fixed block; 9. a telescopic rod; 10. a balancing chamber; 11. an air valve; 12. a balance plug; 13. wood.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, an anti-tilt fastening log grabbing machine for loading and unloading logs comprises a boom 1, a cross rod 2 is movably connected to the bottom end of the boom 1, piston cylinders 3 are fixedly connected to the two ends of the cross rod 2, piston rods 4 are movably connected to the bottom ends of the piston cylinders 3, auxiliary claws 5 are fixedly connected to the bottom ends of the piston rods 4, the auxiliary claws 5 are in an arc shape with a high center and two low sides, and can move up and down along the piston cylinders 3 under the driving of the piston rods 4, so that after a log grabbing tool grabs logs 13, the piston rods 4 drive the auxiliary claws 5 to press downwards to reduce and tighten a large space in the middle, so that the logs 13 are supported by a single-point force of a grab bucket 7 at the bottom of the middle of the log grabbing tool, and downward pressing forces of the auxiliary claws 5 are received by the two sides above the logs, so that the logs 13 are acted by three symmetrical point forces and are more stable and difficult to fall off, and safety problems caused by shaking of the logs 13 when the logs are grabbed and carried, meanwhile, when the small amount of scattered wood 13 on the ground at the later stage is grabbed, the large space in the middle of the grabber is pressed down and reduced by the auxiliary claws 5 at the two sides after the grabber is tightened, so that the size of the central space of the grabber can be freely adjusted when the small amount of scattered wood 13 is grabbed downwards, and the problem that the small amount of scattered wood 13 is difficult to clamp and is difficult to transport when the small amount of wood 13 is grabbed is solved;

referring to fig. 2, two ends of a cross bar 2 are fixedly provided with grab shafts 6, grab buckets 7 are movably mounted through the grab shafts 6, the grab buckets 7 are in an arc shape recessed towards the center, the middle of the arc-shaped outer convex surface of each grab bucket 7 is fixedly connected with a fixed block 8, the top ends of the fixed blocks 8 are fixedly provided with movable shafts, the movable shafts are movably connected with telescopic rods 9 through the movable shafts, the telescopic rods 9 are movably connected with the cross bar 2, the grab buckets 7 are controlled to open and close by controlling the telescopic rods 9 to control the grab buckets 7 to grab, carry, lower and the like the wood 13 on the ground, when the wood 13 on the ground is grabbed, the two grab buckets 7 are in an open shape and fall towards the wood 13, when the wood 13 is positioned between the two grab buckets 7, the telescopic rods 9 are controlled to extend to push the grab buckets 7 to be closed inwards, the wood 13 is clamped in an annular space formed by the grab buckets 7, and is inflated into a piston cylinder 3 through an air pump, the piston rod 4 is controlled to move downwards to push the auxiliary claw 5 out, so that the auxiliary claw 5 presses the wood 13 downwards on two sides of the wood 13, the wood 13 is prevented from shaking in a large space formed by the grab bucket 7, and the wood 13 is stably and safely loaded and unloaded;

referring to fig. 3, a balance cavity 10 is formed in the middle of a cross bar 2, two ends of the balance cavity 10 are communicated with the inside of a piston rod 4, the top end of the piston rod 4 is fixedly connected with an air valve 11, the air pump is connected with the air valve 11, the top end of the middle of the balance cavity 10 is provided with a moving port, a balance plug 12 is movably connected at the moving port, two ends of the balance plug 12 extend into the balance cavity 10, the top end of the middle of the balance plug is connected with a suspension arm 1, when a timber 13 is grabbed, if the lower grabbing position deviates from the central position of the timber 13, the timber 13 inclines due to deviation of the grabbing point in the process of moving upwards and lifting, one side of the timber 13 is lower and the other side is higher, the piston rod 4 on the higher side is squeezed upwards by the timber 13, meanwhile, an auxiliary claw 5 on the other side moves downwards along with the descending timber 13, and the air pump pumps enough air into the balance cavity 10 and the piston rod 4 on both sides through the air valve 11 before the grapple of the grapple is lifted, space size changes in the in-process both sides that the log grab lifts up, the atmospheric pressure that leads to in the balanced chamber 10 in right side increases and the atmospheric pressure in the balanced chamber 10 in left side reduces, thereby promote balanced chamber 10 in swing joint's balanced stopper 12 to the left side removal, put the direction to timber 13 central point promptly and remove, thereby make the position of davit 1 move back to timber 13's center department, make the log grab driver can easily judge timber 13 central point when putting timber 13 down and loading, take place the skew and lead to the problem of loading slope when avoiding grabbing because of timber 13.

The using method of the invention has the following working principle:

before use, the air pump controls the auxiliary claw 5 to retract to the highest position, the telescopic rod 9 retracts to drive the grab buckets 7 to rotate along the rotating shaft 6 and open towards two sides, the two grab buckets 7 fall towards the position of the timber 13 in an opening shape, when the timber 13 is positioned between the two grab buckets 7, the telescopic rod 9 is controlled to extend to push the grab buckets 7 to close inwards, so as to clamp the timber 13 in the annular space formed by the grab bucket 7, then the air pump inflates the piston cylinders 3 at the two sides simultaneously through the air valves 11 at the two sides, the piston rod 4 is controlled to move downwards to push out the auxiliary claw 5, the auxiliary claw 5 presses the timber 13 downwards at the two sides of the timber 13, the timber 13 is supported by the single point force of the grab bucket 7 at the bottom of the middle part, the two sides above the wood 13 are respectively subjected to downward clamping pressure of the auxiliary claws 5, and the wood 13 is subjected to the combined action of three symmetrical forces so as to ensure that the wood is safer and more stable in the subsequent upward lifting and carrying process; meanwhile, when a small amount of wood 13 is left on the ground, the downward moving distance of the auxiliary claw 5 is controlled to change the size of the space between the two grab buckets 7, so that the wood grabbing device of the wood grabbing machine is suitable for grabbing work of different amounts of wood 13, and the problem that the wood grabbing device is difficult to clamp and is difficult to carry when a small amount of wood 13 is grabbed is solved; the air pump is closed after the wood 13 is grabbed by the wood grabber, so that the auxiliary claw 5 is pushed downwards by keeping positive pressure in the balance cavity 10 and the piston cylinder 3 to be tightly attached to the wood 13, the wood grabber starts to move upwards to lift the wood 13, in the process, if the position of the wood grabbed by the wood grabber 13 deviates, and the grabbing point is not in the central position of the wood 13, the wood 13 inclines under the gravity, the wood 13 on the lighter side inclines upwards to push the auxiliary claw 5 to move upwards to squeeze the gas in the piston cylinder 3, and the wood 13 on the other side downwards inclines to loosen the piston cylinder 3 on the side, because the piston cylinders 3 on the two sides are communicated with the balance cavity 10 and the balance plug 12 is movably connected in the middle of the balance cavity 10, the high-pressure gas squeezed in the piston cylinder 3 on the upwards inclining side pushes the balance plug 12 to move towards the other side, namely towards the central position of the wood 13, the suspension arm 1 is ensured to be always in the middle position of the wood 13, the driver of the log grab can easily judge the lowering position of the wood 13 in the process of dropping the wood 13 for loading, the central judgment difficulty in lowering and loading caused by the deviation of the wood 13 during grabbing is avoided, the central position of the wood 13 is always positioned at the bottom end of the suspension arm 1, and therefore safety accidents caused by the inclination of loading are avoided; when the log grab grabs and carries the logs 13 with low ground alignment degree, the grab bucket 7 falls to the position where the plurality of logs 13 are close to the center, because the position of the grabbing point is unique and fixed, and the grabbing points of a single wood deviate in different directions, the pushing-up degree of the auxiliary claws 5 at two sides is controlled according to the quantity of the upward-inclined wood 13 at the left side and the right side of the grabbed wood 13, so that the gas in the balance cavities 10 at two sides pushes the balance plugs 12 to move to the low-pressure side again, thereby maintaining the whole gravity center point to be positioned under the suspension arm 1, and simultaneously due to the arrangement of the auxiliary claws 5 at the two sides of the grab bucket 7, pressing the auxiliary jaw 5 downward by the air pressure in the cylinder 3 prevents the wood 13 from further tilting to a large extent due to the deviation of the gripping point, thereby reducing the abrasion of the grab bucket 7 caused by the deviation of the wood when grabbing the messy wood 13, and further prolonging the service life of the grab bucket 7.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.