CN206254941U - Two-fold arm turn over type back protection device - Google Patents

Abstract

The utility model discloses a kind of two-fold arm turn over type back protection device, it is bad to solve existing rear protection effect, the problem being easily damaged.Including two fixed arms, two lever arms, upset lockable mechanism and Bumpers, two-phase lock pin blind hole is set on the lever arm, lead-over groove is set between two lock pin blind holes, upset lockable mechanism includes a spring detent, and lever arm passes through spring detent and one section of lock pin blind hole locking, during Bumper throwing over barrier, spring detent is moved along lead-over groove, after waiting to cross, Bumper returns to one section of lock pin blind hole locking with the dynamic spring detent of its own gravity belt, reaches protection purpose.The device can ensure that Vehicle protector performance safety reliability, and decomposable asymmetric choice net absorbs rear car Impact energy, at utmost mitigate the injury loss to personnel and vehicle.

Description

Two-fold arm turn over type back protection device

Technical field

The utility model is related to a kind of truck conspicuity marking tail defense device.

Background technology

The special Large vehicle in current oil field bears the engineering accident to be happened suddenly in oil field production, probing development process Emergency repair and daily production support mission.Long-term field construction operation, because the factors such as cross-country run, road conditions difference influence, often The fixed rear in crossbeam end is unreasonable due to structure design, causes protection unfavorable, and frequent breakage.Protection Because strength of structural materials is big after device damage, maintenance difficult is caused, also increase maintenance cost.

The content of the invention

The purpose of this utility model is to provide a kind of two-fold arm turn over type back protection device, and the device can ensure that Vehicle protector Performance safety reliability, and decomposable asymmetric choice net absorbs rear car Impact energy, at utmost mitigates the injury loss to personnel and vehicle.

For achieving the above object, the technical solution adopted in the utility model is：A kind of two-fold arm turn over type back shield Device, two-fold arm turn over type back protection device, including two fixed arms, two lever arms, upset lockable mechanism and Bumpers, institute Fixed arm is stated, is rectangle steel plate, two fixed arms are bolted to the both sides of crossbeam after car respectively, the lever arm, thereon Portion sets therebetween folding arm axle with the bottom of fixed arm, and limited block is fixed in the side of lever arm, and fixed arm is under limited block Spacing, the lower end of lever arm sets Bumper mounting structures, and Bumper level is welded on mounting structures；The upset locking machine Structure, including pipe and the round end lock pin with handle, one end of the pipe is vertically welded in the side of fixed arm bottom, pipe The other end be welded and fixed back-up ring, in round end lock pin insertion pipe, the insertion end fixation activity back-up ring of round end lock pin, fixed back-up ring Spring is cased with the round end lock pin between movable back-up ring；Pin-and-hole is set on the corresponding fixed arm end face in round end lock pin top, it is living Two lock pin blind holes, respectively one section lock pin blind hole and two sections of lock pin blind holes are correspondingly arranged on swing arm, the two lock pin blind holes Apart from equal, two lock pin blind hole centers are that Bumper maximum is upspring with the angle in folding arm axle axle center in the axle center of center and folding arm axle Angle；Two depth of lock pin blind hole are different, and one section of depth ratio of lock pin blind hole, two sections of depth as shallow of lock pin blind hole, one section of lock pin is blind Lead-over groove is set between hole and two sections of lock pin blind holes, and lead-over groove is gradually deepened from one section of lock pin blind hole to two sections of lock pin blind holes；Just During beginning state, the top of round end lock pin is inserted into one section of lock pin blind hole through pin-and-hole.

Angle preferably at most upspring for 90 °.

The beneficial effects of the utility model：The effect of the application be protect lay equal stress on loss prevention, vehicle run in device according to By the upset lockable mechanism automatic locking of itself in protective position（0 ° of Angle Position）, Bumper touched when scraping obstacle, overturns locking machine Structure stress unilateral is unlocked, and Bumper flexibly overturns the obstacle that jumps, it is ensured that protector itself not damaged.The device after obstacle that jumps exists Protective position is automatically replied under Action of Gravity Field rapidly（0 ° of Angle Position）Locking.Obstacle is met during reversing can optionally overturn Bumper lift Rise and be locked at relevant position, manual round end lock pin handle unblock during decentralization, device returns back to 0 ° of Angle Position certainly under gravity It is dynamic to be locked at protective position.

More importantly this kind of two-fold arm turn over type back protection device, with two-period form energy-absorbing protection safety performance.Pass through Limited block and lock pin is spacing step by step with the two-period form that body part is constituted cracks, torsional deformation is decomposed and absorbs rear car Impact energy, At utmost mitigate the injury loss to personnel and vehicle.

Brief description of the drawings

Fig. 1 is the structural representation of the two-fold arm turn over type back protection device of the utility model.

Fig. 2 is upset lockable mechanism schematic diagram.

Fig. 3 is the structural representation of lever arm.

Specific embodiment

The utility model is described further below in conjunction with the accompanying drawings：

As shown in Fig. 1 combinations Fig. 2, Fig. 3：A kind of two-fold arm turn over type back protection device, including two fixed arms 6, two Lever arm 2, upset lockable mechanism 4 and Bumper 1, the fixed arm 6 is rectangle steel plate, and two difference bolts of fixed arm 6 connect The both sides of crossbeam 7 after car are connected on, the top of the lever arm 2 sets therebetween folding arm axle 5 with the bottom of fixed arm 6, activity Limited block 3 is fixed in the side of arm 2, and fixed arm 6 is the lower limit of limited block 3, and the lower end of lever arm 2 sets Bumper support knot Structure, the level of Bumper 1 is welded on mounting structures；The upset lockable mechanism 4, including pipe 42 and the lock of the round end with handle Pin 41, one end of the pipe 42 is vertically welded in the side of the bottom of fixed arm 6, and the other end of pipe 42 is welded and fixed back-up ring 43, in the insertion pipe 42 of round end lock pin 41, the insertion end fixation activity back-up ring 45 of round end lock pin fixes back-up ring 43 with movable back-up ring Spring 44 is cased with round end lock pin between 45；Pin-and-hole, lever arm are set on the corresponding end face of fixed arm 6 in the top of round end lock pin 41 Two lock pin blind holes, respectively one section lock pin blind hole 21 and two sections of lock pin blind holes 23 are correspondingly arranged on 2, the two lock pin blind holes The axle center of center and folding arm axle 5 apart from equal, two lock pin blind hole centers and the maximum bullet that the angle in folding arm axle axle center is Bumper Angle α is played, the angle α that preferably at most upsprings is 90 °；Two depth of lock pin blind hole are different, one section of depth ratio of lock pin blind hole, two sections of locks The depth as shallow of blind hole is sold, lead-over groove 22 is set between one section of lock pin blind hole and two sections of lock pin blind holes, lead-over groove 22 is from one section of lock pin 21 to two sections of lock pin blind holes 23 of blind hole are gradually deepened；During original state, the top of round end lock pin 41 is inserted into one section through pin-and-hole In lock pin blind hole 21.

In vehicular motion, when two-fold arm turn over type back protection device is with ground obstacle scratching, Bumper will be subject to Power pass to lever arm, lever arm is rotated around folding arm axle, and the plunger of round end lock pin is deviate from and along mistake from one section of lock pin blind hole Aqueduct is moved, and round end lock pin automatic unlocking, Bumper is upspring and surmounted obstacles.

After surmounting obstacles, if Bumper is upspring, angle is upspring angle α less than maximum, and Bumper is because of self gravitation effect, activity Arm opposite direction is rotated, and round end lock pin is re-moved back in one section of lock pin blind hole along lead-over groove, lever arm reset locking.If vehicle is scraped Touch barrier larger, Bumper upspring angle reach maximum upspring angle when, round end lock pin is directly entered two sections of lock pins through lead-over groove In blind hole, now Bumper completes 90 degree of upset lockings.During decentralization, round end lock pin is pulled out from two sections of lock pin blind holes, prevented Shield thick stick is transferred automatically, lever arm reset locking.

During vehicle backing, driver regard road conditions, can manual operation Bumper in relevant position locking, prevent reversing when Damage protector.

Claims (2)

1. a kind of two-fold arm turn over type back protection device, two-fold arm turn over type back protection device, including two fixed arms, two work Swing arm, upset lockable mechanism and Bumper, the fixed arm is rectangle steel plate, and two fixed arms are bolted to car respectively Both sides of crossbeam afterwards, the lever arm, its top sets therebetween folding arm axle with the bottom of fixed arm, and the side of lever arm is consolidated Fixing limit block, fixed arm is the lower limit of limited block, and the lower end of lever arm sets Bumper mounting structures, the welding of Bumper level On mounting structures；It is characterized in that：The upset lockable mechanism, including pipe and the round end lock pin with handle, the circle One end of pipe is vertically welded in the side of fixed arm bottom, and the other end of pipe is welded and fixed back-up ring, round end lock pin insertion pipe Interior, the insertion end fixation activity back-up ring of round end lock pin is cased with spring on the round end lock pin between fixed back-up ring and movable back-up ring；Circle Pin-and-hole is set on the corresponding fixed arm end face in head lock pin top, two lock pin blind holes, respectively one section are correspondingly arranged on lever arm Lock pin blind hole and two sections of lock pin blind holes, the center of the two lock pin blind holes is with the axle center of folding arm axle apart from equal, two lock pin blind holes The angle in center and folding arm axle axle center is that Bumper maximum is upspring angle；Two depth of lock pin blind hole are different, one section of lock pin blind hole Two sections of depth as shallow of lock pin blind hole of depth ratio, lead-over groove, lead-over groove are set between one section of lock pin blind hole and two sections of lock pin blind holes Gradually deepen from one section of lock pin blind hole to two sections of lock pin blind holes；During original state, the top of round end lock pin is inserted into through pin-and-hole In one section of lock pin blind hole.

2. two-fold arm turn over type back protection device according to claim 1, it is characterised in that：Maximum upsprings angle for 90 °.