CN102555668B - Tyre assembling device - Google Patents

Abstract

The present invention relates to tire fitting devices. The tire assembly device of the present invention comprises: a first unloading frame, provided with a first clip and a first positioning bolt; a second unloading frame, provided with a second clip and a second positioning bolt; an adjustment rod, one end of which is fixedly connected to To the second unloading frame, the other end is lapped on the bottom plate of the first unloading frame; an additional fixing device is used to fix the length of the adjusting rod when it is adjusted to an appropriate length. The first clamping foot and the second clamping foot are used for clamping the lock key groove on the rim, and the first positioning bolt and the second positioning bolt are used for pressing the bead seat. According to the tire assembly device provided by the present invention, the replacement time when the tire is damaged can be greatly shortened, and a large amount of production cost can be saved.

Description

tire assembly device

technical field

The invention relates to a tire assembly device, in particular to a tire assembly device for vehicles such as scrapers

Background technique

The scraper is a machine that can comprehensively complete excavation, soil transportation, soil unloading, filling, and leveling. It is widely used in ground and underground mines, especially in large-scale ground and underground mines.

The scraper tire is the main part of the scraper, and its performance directly affects the safety, stability and economy of the scraper. In the process of use, due to improper methods, the phenomenon of early damage to tires is relatively common. Correct and reasonable use of tires to improve the service life of tires is of great significance to driving safety and reducing costs. The main damage forms of scraper tires are tread wear, loose or broken cords, cord delamination, bulging, debonding of tread and carcass, and carcass rupture caused by the above results.

The main causes of tire damage are as follows:

1. Insufficient air pressure or overloaded tires

Long-term driving of scraper tires under the condition of insufficient air pressure will accelerate the fatigue damage of the carcass, cause the outer carcass to rupture, and cause serious wear of the tread. When the tire pressure is lower than the set value: 550 kPa (5.5 bar) for the front wheel and 350 kPa (3.5 bar) for the rear wheel, the tire will be rolled back and forth, causing the tire bladder to be scratched and the sidewall to deform greatly , so that the contact between the two tire parts will cause friction, and the two sidewalls will bulge, which will eventually lead to tire damage.

2. Improper operation

The difference in the technical proficiency of operators is also the main reason for tire damage. Since the entire weight of the scraper is borne by the tires, if the scraper is loaded incorrectly, the tires will slip, resulting in water accumulation in the roadway, ore lumps, iron filings and other sundries spilled during transportation in the main roadway. Into the tire, eventually causing a flat tire.

3. Poor axle balance

The front axle of the electric scraper is fixed, and the rear axle swings +/-8 degrees. The swing frame is a swing mechanism designed for the scraper to adapt to the uneven road surface of the stope and increase the stability of the machine during loading or transportation. The rear frame is hinged with the swing frame through the pivot device of the swing frame, and there is enough swing space between the rear frame and the rear axle. When the machine passes on an uneven road, the rear axle can swing relative to the rear frame through the swing frame, thereby Allowing the machine to maintain its normal position when the rear axle swings is also the cause of tire damage.

Because the working site is generally narrow, it is difficult to replace the damaged tires, and due to the lack of special equipment, it takes a lot of labor. As a result, the equipment downtime is too long, which affects the entire production schedule. Therefore, when the tire is damaged, it takes a lot of manpower to replace it, which damages the equipment itself and causes a long downtime of the equipment.

Contents of the invention

The present invention is proposed in view of the above problems, and its purpose is to provide a tire assembly device that can replace tires more conveniently and efficiently.

In order to achieve the above object, the tire assembly device provided by the present invention includes: a first unloading frame provided with a first clamping foot and a first positioning bolt; a second unloading frame provided with a second clamping foot and a second positioning bolt; One end of the adjusting rod is fixedly connected to the second unloading frame, and the other end is lapped on the bottom plate of the first unloading frame; an additional fixing device is used to fix the length of the adjusting rod when it is adjusted to an appropriate length. Wherein, the first clamping foot and the second clamping foot are used for clamping the lock key groove on the rim, and the first positioning bolt and the second positioning bolt are used for pressing the bead seat.

Moreover, the first clip and the second clip both include an L-shaped main body and a clip bolt, the L-shaped main body is formed as an L-shaped hook, and a nut is welded on the side of the upper part of the L-shaped main body, and the clip bolt is combined with the nut , parallel to the long side of the L-shaped main body, and through holes are respectively formed on the first unloading frame and the second unloading frame to allow the L-shaped main body to pass through.

And, when the short side of the L-shaped main body is caught in the lock key groove on the rim, the locking bolt is rotated so that the end of the locking bolt presses against the upper surfaces of the first and second unloading brackets.

Moreover, the clamp bolt is divided into a screw rod, a nut part and a thimble from top to bottom.

Moreover, the first unloading frame is provided with a first positioning bolt connection seat formed with a threaded hole, and the second unloading frame is provided with a second positioning bolt connection seat formed with a threaded hole, and the first positioning bolt is connected to the first positioning bolt. A positioning bolt connection seat is threaded, and the second positioning bolt is threaded with the second positioning bolt connection seat.

Moreover, the first positioning bolt and the second positioning bolt respectively include a screw rod, a nut portion and a thimble.

Moreover, the first unloading frame is provided with a first fine-tuning device for fine-tuning the position of the first positioning bolt connection seat, and the second unloading frame is provided with a second fine-tuning device for fine-tuning the position of the second positioning bolt connection seat.

Moreover, the adjusting rod is composed of two or more long rods spaced apart from each other and parallel, or composed of a plate formed with elongated through holes.

Moreover, the additional fixing device includes a lock nut and a fixing bolt, and the fixing bolt protrudes upwards through the bottom plate of the first unloading frame, and passes through the gap between any two long rods or through the length of the adjusting rod. A strip-shaped through hole, the locking nut is threadedly combined with the fixing bolt above the adjusting rod to fix the adjusting rod.

Moreover, a pressure plate is also provided between the locking nut and the adjusting rod.

According to the tire assembly device provided by the present invention, the replacement time when the tire is damaged can be greatly shortened, and a large amount of production cost can be saved.

Description of drawings

The above and other objects and features of the present invention will become more apparent through the following description in conjunction with the accompanying drawings exemplarily showing an example, wherein:

Fig. 1 is the schematic diagram of tire system;

Fig. 2 is the assembly structure drawing of tire;

Fig. 3 is the front view of the assembly state of tire assembly device of the present invention;

Fig. 4 is the plan view of the assembly state of tire assembly device of the present invention;

Fig. 5 is the schematic diagram of positioning bolt;

Figure 6 is a schematic diagram of the pin;

Fig. 7 is the schematic diagram of the first unloading frame, (a) is a longitudinal sectional view, (b) is a top view;

Fig. 8 is the schematic diagram of the second unloading frame, (a) is a longitudinal sectional view, (b) is a top view;

Fig. 9 is a partial sectional view of an assembled state.

Detailed ways

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Fig. 1 is a schematic diagram of the tire system, and Fig. 2 is an assembly structure diagram of the tire. As shown in Figure 1 and Figure 2, the tire system consists of the following components: tire, rim (ie, tire base), rim flange, O-ring, lock key, tire inflation valve, bead seat (also called bead base) , bead seat), locking ring (that is, locking ring).

The most critical thing when assembling the tire is how to install the locking ring into the fixed locking ring groove. This is the center of gravity of the design. Around this center of gravity, using the position of the locking key, consider a pair of clamping feet, which are stuck in the position of the locking key groove, and at the same time Use positioning bolts to press the bead seat ring, and adjust the length of the bolts to achieve compression and loosening, so that the locking ring has a space for assembly, so that the locking ring enters the fixed locking ring groove. According to the position and size of the tire lock key, the basic size of the positioning bolt and the clamping foot can be obtained.

Then, according to the basic dimensions of the positioning bolts and clamping feet, a mechanical structure for fixing the positioning bolts and clamping feet can be designed. The structure can be designed to be of fixed length (the length cannot be adjusted). However, preferably, it can be designed as a scalable structure.

As shown in FIG. 3 and FIG. 4 , the tire assembly device according to the present invention includes a first unloading frame 10 , a second unloading frame 20 , an adjusting rod 30 , clamp feet 40 , positioning bolts 50 and lock nuts 60 .

A locking foot 40 and a positioning bolt 50 are arranged on the first unloading frame 10 . A locking foot 40 and a positioning bolt 50 are also arranged on the second unloading frame 20 .

The adjusting rod 30 connects the first unloading frame 10 and the second unloading frame 20 . The adjusting rod 30 can be fixed (for example, welded) to the first unloading frame 10 and the second unloading frame 20 with a predetermined length, thereby forming a fixed-length tire assembly device. Preferably, one end of the adjusting rod 30 is fixedly connected (for example, welded) to the second unloading frame 20 , and the other end is movably overlapped to the first unloading frame 10 , and its position is fixed by an additional fixing device. The additional fixing device is, for example, a lock nut 60, which will be described later.

FIG. 5 is a schematic diagram of a positioning bolt, and FIG. 6 is a schematic diagram of a clamping foot.

As shown in FIG. 5 , the positioning bolt includes: a screw rod 53 , a nut portion 54 and a thimble 55 . The thimble 55 is used to withstand the bead seat. After the position is adjusted, the tightness of the thimble 55 is adjusted by the nut part 54 and the screw rod 53 .

Referring again to FIG. 3 , the first unloading frame 10 and the second unloading frame 20 are respectively provided with positioning bolt connection seats 90 . The positioning bolt connection seat 90 may include a base 91 and a hex nut 92 welded therewith. Preferably, fine-tuning devices for fine-tuning the position of the positioning bolt connection seat 90 can be respectively provided on the first unloading frame 10 and the second unloading frame 20 . The fine-tuning device can be configured to form a hole or a groove that closely fits with the base 91 on the unloading frame, and the position of the positioning bolt connection seat 90 can be fine-tuned by manually moving the base 91 in the hole or the groove. Of course, the fine-tuning device can also use various known methods such as ball screws, which will not be repeated here.

As shown in FIG. 6 , the clip 40 includes an L-shaped body 41 and a clip bolt 42 . The L-shaped main body 41 is configured as an L-shaped hook and includes a short side 41I and a long side 43II. Preferably, the L-shaped main body 41 may be in the shape of a curved plate. The upper side of the L-shaped main body 41 is welded with a nut 46 , and the clip bolt 42 is combined with the nut 46 and is parallel to the long side 43II of the L-shaped main body 41 . A connecting plate 47 may be welded on the upper side of the long side 41II of the L-shaped main body 41, and a nut 46 may be welded on the connecting plate 47. The snap bolt 42 is divided into a screw rod 43 , a nut portion 44 and a thimble 45 from top to bottom. In conjunction with Fig. 3 again, when the short side 41I of the L-shaped main body 41 is stuck in the lock key groove on the rim, the locking bolt 42 is rotated so that the thimble 45 is pressed against the first unloading frame 10 and the second unloading frame 20. upper surface.

As shown in FIG. 7 , the first unloading frame 10 is in a hollow state. The fixing bolts 70 protrude upward through the bottom plate of the first unloading frame 10 . A through hole 13 is formed on the top plate 12 of the first unloading frame 10 for setting the clamping feet 40 . Specifically, the long side 43II of the L-shaped main body 41 passes through the through hole 13 . Preferably, the through hole 13 is formed as an elongated opening.

As shown in FIG. 8 , the adjusting rod 30 and the second unloading frame 20 are welded as one. In Fig. 8, the adjusting rod 30 is made of four square steels. Preferably, the two ends of the four square steel pieces can be connected into one body through the cover plate 80 respectively. The number of square steel is not limited to four, it can be two, three or more. Moreover, the adjusting rod 30 can also be formed by a steel plate, and a long through hole is formed in the middle.

Referring to FIGS. 3 and 4 again, the free end of the adjusting rod 30 that is not welded to the second unloading frame 20 extends into the inside of the first unloading frame 10 and overlaps on the bottom plate 11 of the first unloading frame 10 . At this time, the aforementioned fixing bolt 70 protrudes through the gap between the two square steels (or the elongated through hole in the middle of the adjusting rod 30 ). The tire assembly device of the present invention is also provided with lock nuts 60 corresponding to the fixing bolts 70 . When the adjustment rod 30 is moved, the lock nut 60 is in a loose state. When adjusted to a suitable length, tighten the locking nut 60 to fix the adjusting rod 30 and the first unloading frame 10 .

Preferably, a pressing plate 90 may also be provided under the locking nut 60 , that is, the pressing plate 90 is located between the locking nut 60 and the adjusting rod 30 , and acts as a washer for more stable fixing.

Next, a method for replacing a tire using the above-mentioned tire fitting device will be described.

When a tire is damaged and needs to be replaced, the tire must first be disassembled. Can be dismantled vertically or horizontally. Before disassembly, the tire inflation valve spool should be removed to fully deflate, and the lock key should be removed. As the tire has been used for a long time, the tire bead and bead bottom ring are bonded together, and the bead seat can only be removed after the rim flange on the side of the rim groove is removed by gas welding, sledgehammer, crowbar and other tools , At this time, care should be taken not to damage the rim flange. Next, remove the locking ring with a suitable tool and remove the O-ring, loosen the rim flange on the back side and remove the tire from the rim.

When installing tires, follow the steps below:

1) First clean up the debris in the tire system (rim flange, rim, bead seat, locking ring, lock key, tire inflation valve, O-ring groove).

2) Use a jack and three to four sleepers to support the rear (two tires on the rear axle) or the front (two tires on the front axle) of the entire car body, and place the sleepers to ensure stability and safety.

3) Assemble the tire inflation valve on the rim, install the rim flange on the side of the frame into the rim, apply No. 3 lithium-based grease to the two bead edges of the tire, and install the outer rim flange and bead seat ring on the tire , The tire system assembly such as the tire, rim flange, bead seat ring, etc. is manually assembled on the rim. At the same time, check that the locking key positions of the bead seat ring and the rim are consistent.

4) Install a new O-ring (do not reuse the old one, it will cause air leakage). Also apply No. 3 lithium base grease, and install the O-ring into the groove. To prevent it from deforming, hold the O-ring tightly with both hands during this operation, and do not turn or twist it when it is inserted into the groove.

5) Using the tire assembly device, according to the diameter of the rim, loosen the lock nut of the tire assembly device, adjust the length of the adjustment rod and then lock it again, so that the two positioning bolts are in contact with the lock key grooves of the bead seat. At this time, the telescopic length of the adjusting rod is adjusted to a degree equivalent to the inner diameter of the rim. At the same time, let the hook of the locking foot catch the groove of the rim lock key. In this state, adjust the nut portion 44 of the clip 40 with a wrench, so that the thimble presses the upper surfaces of the first unloading frame 10 and the second unloading frame 20, thereby fixing the position of the clip 40 and preventing it from loosening. And, adjust the nut part 54 of the set bolt 50 with a wrench, make the thimble 55 of the set bolt 50 press the bead seat, and adjust the set bolt according to the size of the locking ring, when the space between the bead seat and the rim For larger sizes, use a hammer to tap the locking ring into place. Refer to Figure 9 for the final assembly state.

6) Install the lock key into the groove of the rim and bead seat, adjust the tire inflation valve, and check whether the rim is installed correctly before the tire is inflated. Secure the bead tightly to the rim. Inflate the smaller tires to 75PSI and the larger tires to 90PSI, then reduce to the recommended ambient starting pressure.

In the past, tire assembly mainly used crowbars to smash tire bead openings, bead seat rings, locking rings, etc., causing the tires to be leaky and short of air soon. The glue delaminated, causing the tire to rupture. After using the tire assembly device of the present invention, tires can be replaced conveniently and quickly, greatly reducing the cost, and reducing the possibility of tire damage caused by incorrect use of tools by maintenance personnel, greatly improving the service life of each component of the tire system , but also effectively prolong the service life of the tire.

The present invention is not limited to the above-mentioned embodiments, and various variations and modifications can be made without departing from the technical idea of the present invention. For example, the structure and application of the tire assembly device of the present invention have been described above by taking the scraper tire as an example. However, the scope of application of the present invention is not limited thereto, and it can also be applied to trucks, engineering vehicles, large buses, cars, tractors and other various vehicles, as well as other vehicles such as airplanes.

Claims (9)

1. a tyre assembling device, is characterized in that comprising:

First unloads frame, is provided with the first card base and the first dowel bolt;

Second unloads frame, is provided with the second card base and the second dowel bolt;

Adjust bar, its one end is affixed to second and unloads frame, and the other end is overlapped on described first and unloads on the base plate of frame;

Additional fixation device, in the time that the length adjustment of adjust bar is suitable length, is fixed it,

Described the first card base and the second card base are for being stuck in the lock keyway on wheel rim, and described the first dowel bolt and the second dowel bolt are used for compressing tyre bead seat ring,

Described the first card base and the second card base include L-type main body and card base bolt, L-type main body is configured to L-type hook, and the side on L-type main body top is welded with nut, card base bolt is combined with this nut, be parallel to the long limit of L-type main body, and described first unloads frame and second unloads on frame and is formed with respectively through hole, so that described L-type main body is passed.

2. tyre assembling device according to claim 1, is characterized in that in the time that the minor face of described L-type main body is stuck in the lock keyway on wheel rim, rotates described card base bolt, makes card base bolt end compress the first upper surface that unloads frame and second and unload frame.

3. tyre assembling device according to claim 2, is characterized in that described card base bolt is divided into screw rod, nut portion and thimble from top to bottom.

4. tyre assembling device according to claim 1, it is characterized in that described first unloads and set up the first dowel bolt Connection Block that is formed with tapped bore, described second unloads and sets up the second dowel bolt Connection Block that is formed with tapped bore, described the first dowel bolt is threaded with described the first dowel bolt Connection Block, and described the second dowel bolt is threaded with described the second dowel bolt Connection Block.

5. tyre assembling device according to claim 4, is characterized in that described the first dowel bolt and the second dowel bolt comprise respectively screw rod, nut portion and thimble.

6. according to the tyre assembling device described in claim 4 or 5, it is characterized in that described first unloads frame and be provided with the first micromatic setting for finely tuning the first dowel bolt Connection Block position, described second unloads frame is provided with the second micromatic setting for finely tuning the second dowel bolt Connection Block position.

7. according to the tyre assembling device described in claim 1 or 4, it is characterized in that described adjust bar is spaced from each other and parallel stock forms by plural, or formed by the sheet material that is formed with strip through hole.

8. tyre assembling device according to claim 7, it is characterized in that described additional fixation device comprises jam nut and bolt of rear end plate, described bolt of rear end plate runs through described the first base plate that unloads frame and projects upwards, and space through any two stocks or through the strip through hole of adjust bar, described jam nut is combined with described bolt of rear end plate screw thread above described adjust bar, to fix described adjust bar.

9. tyre assembling device according to claim 8, is characterized in that being also provided with pressing plate between described jam nut and described adjust bar.

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