CN216153757U - Tail hook mechanism for rubber-tyred vehicle arresting system - Google Patents

Abstract

The utility model provides a tail hook mechanism for a rubber-tyred vehicle arresting system, which is arranged on a crossbeam of a rubber-tyred vehicle, and comprises a hook ear plate, a big hook, a unhooking mechanism, a tail hook fixing ring, a hanging plate and two crossbeam fixing plates, wherein the two crossbeam fixing plates are symmetrically and fixedly arranged on the crossbeam; the unhooking mechanism is connected with the big hook through the hanging plate. When the rubber-tyred vehicle runs for some reason, the tail hook mechanism controls the tail hook to fall and lift the blocking rope in the roadway, so that the tail hook hooks the blocking rope, and the blocking rope is connected with the buffer energy absorber, so that the impact energy of the descending vehicle is absorbed to stop the vehicle, and the rubber-tyred vehicle and the personnel on the vehicle are protected.

Description

Tail hook mechanism for rubber-tyred vehicle arresting system

Technical Field

The utility model belongs to the technical field of rubber-tyred vehicles, and particularly relates to a tail hook mechanism for a rubber-tyred vehicle arresting system.

Background

Trackless rubber-tyred cars are now used in large numbers in many modern large mines. However, in the using process, the phenomenon of runaway of the rubber-tyred vehicle caused by overspeed driving, brake failure, sudden symptoms of a driver or failed gear engagement often occurs, once the runaway accident of the rubber-tyred vehicle occurs, serious personnel injury and property loss are often caused, and the rubber-tyred vehicle becomes a great hidden danger of mine safety.

The mine enterprise that uses the rubber-tyred car transportation at present mainly solves this type sports car accident countermeasure through two kinds of modes:

1) and accumulating waste tires along two sides of the roadway wall in different sections of the roadway, and enabling a driver to continuously adjust the driving direction to generate friction between the vehicle body and the waste tires so as to reduce the speed of the vehicle in case of the running accident that the speed of the vehicle is out of control. However, the control mode is related to the speed of the vehicle, the driving level of a driver and the like, the subjective factor is strong, the vehicle rollover is easy to happen, the use effect is very unreliable, and the hidden danger and the interception effect are extremely poor.

2) A section of mountain climbing blind roadway is arranged at the tail end of the roadway, and a large number of stones (similar to the continuous downhill road section on the expressway) are paved on the floor of the roadway. Every certain distance is provided with an uphill road section. When the vehicle brake fails and the speed is out of control, the vehicle can manually drive down the last road section by a driver to achieve the purposes of speed reduction and braking), and when the rubber-tyred vehicle has the speed out-of-control emergency conditions such as brake failure, gear engagement failure and the like, the driver drives the vehicle to directly drive into the roadway to achieve the effects of speed reduction and braking. However, since similar mountain blind roadways are limited in number, once missed, there is no effective control over the vehicle. And the roadways are arranged in the roadway construction, the roadways are often far away from the roadways, the speed of the vehicles is continuously accelerated when the vehicles run, the vehicles cannot drive in according to an ideal state, and serious accidents of vehicle damage and people death are easily caused.

Therefore, chinese patent CN103786694A discloses a speed runaway protection system for trackless rubber-tyred vehicle, which comprises a drag hook, often called tail hook because it is arranged at the tail of the frame of the trackless rubber-tyred vehicle. One end of the draw hook is a hook head, the other end of the draw hook is connected with a corresponding base through a pin shaft, so that the draw hook can rotate around the pin shaft, wherein the base is used for installing the draw hook on a trackless rubber-tyred vehicle. At one end provided with the hook head, the hook head is usually locked by a locking mechanism, and when the blocking is needed, the locking mechanism is unlocked to release the draw hook, so that the draw hook rotates around the pin shaft to enable the hook head to fall. It will be appreciated that the arresting rope for arresting the draw hook is intended to be positioned in front of the current position of the trackless rubber-tyred vehicle when the draw hook is released, so that the draw hook is already in contact with the roadway floor, for example, before entering the arresting position. The roadway is different from a flat road surface, the ground is often uneven, scattered stones, coal slag and other obstacles exist, the tail hook jumps along with the trackless rubber-tyred vehicle in the advancing process, if the tail hook jumps right when running to the position near the blocking rope, the tail hook possibly cannot catch the blocking rope to cause blocking failure, and the success rate of blocking is reduced on the whole.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems and the defects of the prior art, the utility model aims to provide a tail hook mechanism for a rubber-tyred vehicle arresting system.

In order to achieve the above purpose of the present invention, the present invention adopts the following technical scheme:

a tail hook mechanism for a rubber-tyred vehicle arresting system is mounted on a crossbeam of a rubber-tyred vehicle and comprises a hook lug plate, a big hook, a unhooking mechanism, a tail hook fixing ring, a hanging plate and two crossbeam fixing plates;

the two cross beam fixing plates are symmetrically and fixedly arranged on the crossbeam, a hook cross beam is connected between the two cross beam fixing plates, a hook lug seat is fixed on the hook cross beam, a big hook is hinged on the hook lug seat, and a tail hook fixing ring is sleeved on the big hook and can slide back and forth; the unhooking mechanism is fixed on the unhooking mounting plate and is connected with the big hook through the hanging plate.

As further preferred scheme, couple ear seat includes the bottom plate and locates two parallel otic placodes on the bottom plate, the bottom plate passes through U type bolt fastening on the couple crossbeam, and two otic placodes weld on the bottom plate perpendicularly and at intervals, and be provided with the tail hook stopper on the outer edge of two otic placodes, the big hook pivot is located between two otic placodes, the tail hook stopper is highly restricted the whereabouts of big hook at big hook whereabouts in-process.

Furthermore, the hook comprises a hook fixing ring, a hook handle, an adjusting connecting rod and a hook head which are connected in sequence;

the hook fixing ring is hinged to the hook lug seat through a pin shaft, the adjusting connecting rod is provided with a tension spring adjusting seat, two groups of tension springs are arranged between the hook lug seat and the tension spring adjusting seat, and the two groups of tension springs are arranged in parallel and are respectively positioned on two sides of the adjusting connecting rod.

Preferably, the hook fixing ring is in threaded connection with the hook handle and is reinforced through a rib plate.

As a further preferable scheme, one end of the adjusting connecting rod is fixedly connected with the hook handle through a first locking nut, and the other end of the adjusting connecting rod penetrates through the tension spring adjusting seat and is fixedly connected with the hook head through a second locking nut.

As a further preferable scheme, a hanging plate fixing ring is sleeved on the straight handle of the hook head, the hanging plate fixing ring can slide on the straight handle of the hook head, and the hanging plate fixing ring is connected with the tail hook fixing ring through a bolt.

Furthermore, the hanging plate comprises hanging rings, hanging ring fixing seats, hanging ring adjusting rods and fixing ring connecting blocks, the upper ends of the hanging rings are connected with the unhooking mechanism, the lower ends of the hanging rings are welded on the hanging ring fixing seats, and the hanging ring fixing seats are in threaded connection with one ends of the hanging ring adjusting rods and are locked through small locking nuts; the other end of the hanging ring adjusting rod is in threaded connection with one end of the fixing ring connecting block and locked by the small locking nut, and the other end of the fixing ring connecting block is connected with the hanging plate fixing ring.

Further, the extension spring adjusting seat comprises an extension spring hook, a clamp spring and an adjusting nut, the extension spring hook is sleeved on the adjusting nut, a clamp spring groove is formed in the adjusting nut, the clamp spring is installed in the clamp spring groove, and axial movement of the extension spring hook is limited by shaft shoulders on the clamp spring and the adjusting nut.

As a further preferred scheme, two ends of the tension spring hook are provided with semicircular notches, one end of the tension spring is hung at the semicircular notches, and the other end of the tension spring is fixed on the hook ear seat.

Preferably, the unhooking mechanism is fixed on the girder through a unhooking mounting plate and a unhooking cross beam.

The utility model has the following beneficial effects:

1. the limiting block is arranged at the position of the hook lug seat, so that the bouncing of the tail hook is avoided to a great extent, and the two tension springs are further arranged on the two sides of the adjusting rod to slow down the bumping and the vibration of the tail hook during the running of a vehicle, so that the ground clearance of the tail hook can be controlled within a safe range, and the reliability of the tail hook for hooking the arresting rope is improved.

2. The big hook is composed of a hook handle, an adjusting connecting rod and a hook head, wherein the hook head and the hook handle are standard parts, and the big hook can be installed only by adjusting the length of the connecting rod according to the actual size of a vehicle on site; and moreover, the hanging plate is fixed on the hanging plate fixing ring, the hanging plate fixing ring can slide on the hook head to adjust the position, and the position is locked by a screw after being adjusted properly. Therefore, the hanging plate can be ensured to be positioned under the opening of the unhooking mechanism, so that the unhooking is more stable and reliable, and the manual hooking is easier.

3. The hanging plate comprises hanging rings, hanging ring fixing seats, hanging ring adjusting rods and fixing ring connecting blocks, and the structure of the hanging plate can be adjusted through the hanging ring adjusting rods, so that the actual height requirement of a field vehicle is met.

4. According to the utility model, the two sides of the adjusting connecting rod are respectively provided with the tension springs, one ends of the tension springs are fixed at the hook ear seats, the other ends of the tension springs are fixed at the tension spring adjusting seats, and the tension of the springs is adjustable. Therefore, the size of the spring tension can be adjusted according to the length of the tail hook and the difference of the ground condition. The tail hook vibration bounce caused by road conditions and the reason of the vehicle itself when the tail hook moves to the distance of the arresting rope along with the vehicle after falling is reduced.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to clearly understand the technical solutions of the present invention and to implement the technical solutions according to the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

The present invention will be described in further detail with reference to specific examples.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other designs and drawings without creative efforts.

FIG. 1 is a schematic structural view of a tail hook mechanism for the rubber-tyred vehicle arresting system;

FIG. 2 is a front view of the tail hook mechanism;

FIG. 3 is a top view of the tail hook mechanism;

FIG. 4 is a side view of the tail hook mechanism;

FIG. 5 is a schematic view of the construction of a hook;

FIG. 6 is a front view of the tension spring adjustment seat;

FIG. 7 is a sectional view taken along line A-A of FIG. 6;

FIG. 8 is a top view of the tension spring adjustment block;

FIG. 9 is a front view of the hanging plate;

fig. 10 is a side view of the peg board.

Description of reference numerals:

1. a rubber-tyred vehicle; 2. a girder; 3. a tail hook mechanism; 4. a hook ear plate; 4.1, a bottom plate; 4.2, ear plates; 4.3, a tail hook limiting block; 5. a big hook; 6. a unhooking mechanism; 7. a tail hook fixing ring; 8. hanging the plate; 9. a tension spring; 10. a beam fixing plate; 11. unhooking the cross beam; 12. a hook fixing ring; 13. a rib plate; 14. a hook handle; 15. adjusting the connecting rod; 16. a tension spring adjusting seat; 17. a first lock nut; 18. a hanging plate fixing ring; 19. a hook head; 20. a second lock nut; 21. a clamp spring; 22. adjusting the nut; 23. hanging a ring; 24. a hanging ring fixing seat; 25. a hanging ring adjusting rod; 26. locking the small nut; 27. fixing a ring connecting block; 28. a hook beam; 29. a tension spring hook; 30. unhooking and mounting plate.

Detailed Description

The technical scheme of the utility model is clearly and completely described in the following with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are used in a broad sense, 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the coupling/connection relationships mentioned herein do not mean that the components are directly connected, but mean that a better coupling structure can be formed by adding or reducing coupling accessories according to specific implementation conditions. All technical characteristics in the utility model can be interactively combined on the premise of not conflicting with each other.

Example 1:

the embodiment provides a tail hook mechanism for a rubber-tyred vehicle arresting system, as shown in fig. 1, the tail hook mechanism 3 is mounted on a crossbeam 2 of a rubber-tyred vehicle 1, as shown in fig. 2 and 3, the tail hook mechanism 3 comprises a hook ear plate 4, a big hook 5, a unhooking mechanism 6, a tail hook fixing ring 7, a hanging plate 8 and two crossbeam fixing plates 10; the two cross beam fixing plates 10 are symmetrically and fixedly arranged on the cross beam 2, the hook cross beam 28 is connected between the two cross beam fixing plates 10, the hook lug seat 4 is fixed on the hook cross beam 28, the large hook 5 is hinged on the hook lug seat 4, and the tail hook fixing ring 7 is sleeved on the large hook 5 and can slide back and forth; the unhooking mechanism 6 is connected with the big hook 5 through a hanging plate 8.

The tail hook mechanism is mainly used in a rubber-tyred vehicle arresting system and is generally mounted on a crossbeam of a vehicle and close to the tail of the vehicle. When the rubber-tyred vehicle runs for some reason, the tail hook mechanism is controlled to fall and lift the arresting rope in the roadway (see patent CN211075849U for details), so that the arresting rope is hooked by the tail hook mechanism, and the impact energy of the descending vehicle is absorbed by the arresting rope and the buffer energy absorber (see patent CN207535902U for details), so that the vehicle is stopped. The function of protecting the vehicle and the personnel on the vehicle is achieved.

Example 2:

repeated experiments show that: when the vehicle is in stall and advances, the contact between the tail hook and the ground is the main reason for the bounce of the tail hook and the failure of the hook to block the rope. Therefore, on the basis of embodiment 1, as shown in fig. 4, the hook ear seat 4 includes a bottom plate 4.1 and two parallel ear plates 4.2 disposed on the bottom plate 4.1, the bottom plate 4.1 is fixed on the hook beam 28 through U-shaped bolts, the two ear plates 4.2 are vertically welded on the bottom plate 4.1 at intervals, tail hook limit blocks 4.3 are disposed on the outer edges of the two ear plates 4.2, the hook 5 is pivoted between the two ear plates 4.2, and the tail hook limit blocks 4.3 limit the falling height of the hook 5 in the falling process of the hook 5, so that the hook is not contacted with the ground as much as possible after falling, thereby largely avoiding the bounce of the hook.

Example 3:

as shown in fig. 5, specifically, the hook 5 includes a hook fixing ring 12, a hook handle 14, an adjusting link 15 and a hook head 19 which are connected in sequence, further, the hook fixing ring 12 is hinged on the hook ear seat 4 through a pin shaft, and the fixing ring 12 and the pin shaft connected with the hook ear seat 4 are made of stainless steel to prevent rusting in a wet environment in the pit and influence normal hook falling. Further, the adjusting connecting rod 15 is provided with a tension spring adjusting seat 16, two groups of tension springs 9 are arranged between the hook ear seat 4 and the tension spring adjusting seat 16, and the two groups of tension springs 9 are arranged in parallel and are respectively located on two sides of the adjusting connecting rod 15. On the basis of the embodiment 2, the tension springs are respectively arranged on the two sides of the adjusting connecting rod 15, so that the bumping and the shaking of the tail hook during the running of the vehicle are relieved, and the height of the tail hook from the ground can be controlled within a safe range; and the rope skipping mechanism controls the lifting height of the blocking rope, so that the probability that the tail hook catches the blocking rope is greatly improved.

As a further preferable scheme, after the hook fixing ring 12 and the hook handle 14 are connected by screw threads, the hook fixing ring 12, the hook handle 14 and the rib plate 13 are welded together by the rib plate 13, and the fixing ring 12, the hook handle 14 and the rib plate 13 form a part of the hook.

Preferably, one end of the adjusting link 15 is fixedly connected with the hook handle 14 through a first lock nut 17, and the other end of the adjusting link 15 passes through the tension spring adjusting seat 16 and is fixedly connected with the hook head 19 through a second lock nut 20. Note that, in order to ensure the strength adjustment link 15 is a high-strength screw of 10.9 steps.

As a further preferable scheme, the hanging plate fixing ring 18 is sleeved on the straight shank of the hook head 19 and can slide on the straight shank of the hook head 19 to adjust the position, and the position is properly adjusted and then is tightly pressed by a screw.

The large hook 5 is of a split structure, namely the large hook 5 consists of a hook head, an adjusting connecting rod and a hook handle, the hook head and the hook handle are standard parts, and the connecting rod can be installed by adjusting the length of the connecting rod according to the actual size of a vehicle on site. It is worth mentioning that the hanging plate is fixed on the hanging plate fixing ring, the hanging plate fixing ring can slide on the hook head to adjust the position, and the position is locked by a screw after being adjusted properly. Therefore, the hanging plate can be ensured to be positioned under the opening of the unhooking mechanism, so that the unhooking is more stable and reliable, and the manual hooking is easier.

Example 4:

due to the limitation of the installation position of the field vehicle, the hanging plates are different in length, and the hanging plates are not easy to be made into flexible connection for meeting the requirement of quick hooks. Therefore, as a further preferable scheme, as shown in fig. 9 and 10, the hanging plate 8 includes a hanging ring 23, a hanging ring fixing seat 24, a hanging ring adjusting rod 25 and a fixing ring connecting block 27, the upper end of the hanging ring 23 is connected with the unhooking mechanism 6, the lower end of the hanging ring 23 is welded on the hanging ring fixing seat 24, and the hanging ring fixing seat 24 is in threaded connection with one end of the hanging ring adjusting rod 25 and is locked by a small locking nut 26; the other end of the hanging ring adjusting rod 25 is in threaded connection with one end of the fixing ring connecting block 27 and locked by the small locking nut 26, and the other end of the fixing ring connecting block 27 is connected with the hanging plate fixing ring 18 through a pin shaft. The hanging plate is made into an adjustable structure, so that the actual height requirement of a field vehicle is met.

Example 5:

as shown in fig. 6, 7 and 8, further, the tension spring adjusting seat 16 includes a tension spring hook 29, a clamp spring 21 and an adjusting nut 22, the tension spring hook 29 is sleeved on the adjusting nut 22, a clamp spring groove is formed in the adjusting nut 22, the clamp spring 21 is installed in the clamp spring groove, and shoulders on the clamp spring 21 and the adjusting nut 22 limit axial movement of the tension spring hook 29, but do not limit rotation around the central shaft.

As a further preferable scheme, two ends of the tension spring hook 29 are provided with semicircular notches, and the tension spring 9 can be pre-tightened by rotating the adjusting nut 22 with a wrench on site; furthermore, one end of the tension spring 9 is hung at the semicircular gap, and the other end of the tension spring 9 is fixed on the hook ear seat 4.

One end of the tension spring is fixed at the hook ear seat, the other end of the tension spring is fixed at the tension spring adjusting seat, and the tension of the spring is adjustable. Therefore, the size of the spring tension can be adjusted according to the length of the tail hook and the difference of the ground condition. The tail hook vibration bounce caused by road conditions and the reason of the vehicle itself when the tail hook moves to the distance of the arresting rope along with the vehicle after falling is reduced.

Example 6:

in addition to the above embodiment, the unhooking mechanism 6 is fixed to the girder 2 through the unhooking mounting plate 30 and the unhooking cross beam 11, specifically, as shown in fig. 3, the unhooking cross beam 11 is fixed to the girder 2, the unhooking mounting plate 30 is mounted on the unhooking cross beam 11, and the unhooking mechanism 6 is fixed to the unhooking mounting plate 30. The specific structure of the unhooking mechanism is described in detail in patent CN 110667534A.

When the unhooking mechanism 6 acts, the hanging plate 8 is separated from the unhooking mechanism 6. At this time, the hanging plate 8 and the tail hook fixing ring 7 rotate clockwise with the big hook under the action of gravity and fall. When falling to a certain height, the tail hook is clamped by the tail hook limiting block 4.3 and can not fall. The hook 5 is pressed on the tail hook limiting block 4.3 under the action of the tension spring 9. The vehicle moves forward as it advances until the check rope is caught.

When in use: the installation method of the tail hook mechanism 3 is as follows: the beam fixing plate 10 is clamped on the vehicle beam 2 by a U-shaped clamp and is welded on the beam sometimes according to the vehicle condition; the hook ear seat 4 is fixed on the hook beam 28 by a U-shaped clip, and the hook beam 28 is connected with the beam fixing plate 10. The big hook 5 is hinged on the hook ear seat 4 by a pin shaft; the tail hook fixing ring 7 is sleeved on the big hook 5 and can slide back and forth, and two fastening screws are arranged on the tail hook fixing ring 7 and can fix the tail hook fixing ring 7 at a certain position of the big hook 5; the unhooking mechanism 6 is fixed at the vehicle girder 2 through an unhooking mounting plate 30 and an unhooking cross beam 11; the unhooking mechanism 6 is connected with the big hook 5 through a hanging plate 8.

Example 7:

the embodiment provides a rubber-tyred vehicle arresting system which comprises a control device, a tail hook mechanism, a rope skipping mechanism, an alarm device, an energy absorber arranged on the ground in a roadway and a speed measuring sensor arranged on a rotating shaft of a rubber-tyred vehicle; the speed measuring sensor, the tail hook mechanism and the rope skipping mechanism are respectively electrically connected with the control device, and the energy absorber is connected with the rope skipping mechanism; the alarm device is respectively and electrically connected with the speed measuring sensor and the control device.

When the rubber-tyred vehicle runs, the speed measuring sensor sends a signal, the alarm device sends an alarm, at the moment, a driver presses the big hook release button, the alarm device sends a signal to the control device, the control device controls the tail hook mechanism and the rope skipping mechanism to act, the tail hook mechanism hooks the rope skipping mechanism, and the rope skipping mechanism drives the energy absorber to work, so that the rubber-tyred vehicle is decelerated, the rubber-tyred vehicle is blocked, and the purpose of protecting the running vehicle is achieved;

when the rubber-tyred vehicle runs, the speed measuring sensor sends a signal, the alarm device sends an alarm, if a driver does not press the tail hook release button for some reason, when the vehicle speed exceeds a set speed, the speed measuring sensor sends a signal to the control device, the control device controls the tail hook mechanism and the rope skipping mechanism to act, the tail hook mechanism hooks the rope skipping mechanism, and the rope skipping mechanism drives the energy absorber to work, so that the rubber-tyred vehicle decelerates, blocks the rubber-tyred vehicle, and the purpose of protecting the running vehicle is achieved.

The rope skipping mechanism, the control device, the energy absorber and the alarm device are all in the prior art and are not described in detail herein.

The tail hook mechanism is a basic component of a rubber-tyred vehicle arresting system, when the rubber-tyred vehicle runs for some reason, the tail hook is controlled to fall and lift the arresting rope in a roadway, so that the tail hook catches the arresting rope, and the arresting rope is connected with the buffer energy absorber, so that the impact energy of the downward movement of the vehicle is absorbed, and the vehicle stops. The function of protecting the vehicle and the personnel on the vehicle is achieved.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the utility model as set forth in the claims appended hereto.

Claims (10)

1. The utility model provides a rubber-tyred car is tail hook mechanism for arresting system, this tail hook mechanism install on the girder of rubber-tyred car its characterized in that: the tail hook mechanism comprises a hook ear plate, a big hook, a unhooking mechanism, a tail hook fixing ring, a hanging plate and two cross beam fixing plates;

the two cross beam fixing plates are symmetrically and fixedly arranged on the crossbeam, a hook cross beam is connected between the two cross beam fixing plates, a hook lug seat is fixed on the hook cross beam, a big hook is hinged on the hook lug seat, and a tail hook fixing ring is sleeved on the big hook and can slide back and forth; the unhooking mechanism is connected with the big hook through the hanging plate.

2. The tail hook mechanism for the rubber-tyred vehicle arresting system according to claim 1, wherein: couple ear seat includes the bottom plate and locates two parallel otic placodes on the bottom plate, the bottom plate passes through U type bolt fastening on the couple crossbeam, and two otic placodes weld on the bottom plate perpendicularly and at the interval, and the outer edge of two otic placodes is provided with the tail hook stopper, the big hook pivot is located between two otic placodes, the tail hook stopper is highly restricted the whereabouts of big hook at the big hook whereabouts in-process.

3. The tail hook mechanism for the rubber-tyred vehicle arresting system according to claim 1, wherein: the big hook comprises a big hook fixing ring, a hook handle, an adjusting connecting rod and a hook head which are connected in sequence;

the hook fixing ring is hinged to the hook lug seat through a pin shaft, the adjusting connecting rod is provided with a tension spring adjusting seat, two groups of tension springs are arranged between the hook lug seat and the tension spring adjusting seat, and the two groups of tension springs are arranged in parallel and are respectively positioned on two sides of the adjusting connecting rod.

4. The tail hook mechanism for the rubber-tyred vehicle arresting system according to claim 3, wherein: the hook fixing ring and the hook handle) are in threaded connection and are reinforced through a rib plate.

5. The tail hook mechanism for the rubber-tyred vehicle arresting system according to claim 3, wherein: one end of the adjusting connecting rod is fixedly connected with the hook handle through a first locking nut, and the other end of the adjusting connecting rod penetrates through the tension spring adjusting seat and is fixedly connected with the hook head through a second locking nut.

6. The tail hook mechanism for the rubber-tyred vehicle arresting system according to claim 3, wherein: the straight shank of gib head has cup jointed the link plate and has fixed the ring, the link plate is fixed the ring and can be slided on the straight shank of gib head, and this link plate is fixed the ring and is passed through bolted connection with the fixed ring of tail hook.

7. The tail hook mechanism for the rubber-tyred vehicle arresting system according to claim 6, wherein: the hanging plate comprises hanging rings, hanging ring fixing seats, hanging ring adjusting rods and fixing ring connecting blocks, the upper ends of the hanging rings are connected with the unhooking mechanism, the lower ends of the hanging rings are welded on the hanging ring fixing seats, and the hanging ring fixing seats are in threaded connection with one ends of the hanging ring adjusting rods and are locked through small locking nuts; the other end of the hanging ring adjusting rod is in threaded connection with one end of the fixing ring connecting block and locked by the small locking nut, and the other end of the fixing ring connecting block is connected with the hanging plate fixing ring through a pin shaft.

8. The tail hook mechanism for the rubber-tyred vehicle arresting system according to claim 3, wherein: the extension spring adjusting seat comprises an extension spring hook, a clamp spring and an adjusting nut, the extension spring hook is sleeved on the adjusting nut, a clamp spring groove is formed in the adjusting nut, the clamp spring is installed in the clamp spring groove, and the axial movement of the extension spring hook is limited by a shaft shoulder on the clamp spring and the adjusting nut.

9. The tail hook mechanism for the rubber-tyred vehicle arresting system according to claim 3, wherein: the two ends of the tension spring hook are provided with semicircular notches, one end of the tension spring is hung at the semicircular notches, and the other end of the tension spring is fixed on the hook ear seat.

10. The tail hook mechanism for the rubber-tyred vehicle arresting system according to claim 1, wherein: the unhooking mechanism is fixed on the crossbeam through the unhooking mounting plate and the unhooking crossbeam.

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