CN204567622U - Self-tightening type emergency brake arrangement is suppressed in two screw thread bush end face friction - Google Patents

Abstract

Self-tightening type emergency brake arrangement is suppressed in two screw thread bush end face friction, comprises and is sleeved on a wheel male thread inner sleeve on axletree, wheel shaft thread jacket cylinder, a mobile screw thread inner sleeve and a mobile thread jacket cylinder; It is characterized in that: wheel male thread inner sleeve is fixedly mounted on axletree, the outside face of wheel male thread inner sleeve has outside thread, wheel shaft thread jacket jacket casing is screwed on the outside thread of wheel male thread inner sleeve, and the right side of wheel shaft thread jacket cylinder is provided with wheel shaft thread jacket cylinder friction carrier ring and wheel shaft thread jacket cylinder flow ring successively; There is a mobile screw thread inner sleeve ring friction on the right side of wheel shaft thread jacket cylinder flow ring, and mobile screw thread inner sleeve ring friction is fixedly mounted on mobile screw thread inner sleeve friction carrier ring; A brute spring is installed with between the right side of mobile thread jacket cylinder and the left gear wheel of revolving wheel, bearing external extension sleeve, the left gear wheel of revolving wheel, revolving wheel, have a long bearing between the right gear wheel of revolving wheel and axletree, the inner ring of long bearing is fixedly mounted on the outside face of axletree.

Description

Self-tightening type emergency brake arrangement is suppressed in two screw thread bush end face friction

Technical field

The present invention relates to two screw thread bush end face friction and suppress self-tightening type emergency brake arrangement, be applicable to the brake of all automobiles, belong to technical field of vehicle safety.

Background technology

We often hear many automobiles particularly large-scale autotruck, due to brake failure generation grave accident, because the hydraulic coupling that the present braking automobile of one side needs driving engine to run mostly or atmospheric pressure brake, the brake system long-time running of automobile uses on the other hand, likely to break down or malfunctioning, therefore, ensure that the most important brake of safety does not have stand-by system particularly not have emergency braking system to be irrational; And the parking brake of nearly all automobile not too works for real brake, particularly automobile is when running at high speed or in descending brake failure or under the unexpected off position of driving engine, and parking brake does not have any effect.

Domestic and international research, the achievement of production and invention automobile brake system, report and system and device quite a lot, and it is quite a few for the emergency braking system of automobile, but these system and device great majority all more complicated, and mostly all will by means of the hydraulic pressure of engine operation or pressure system during brake, the patent of invention of Wei Baiqing " 201510233734.9: two screw thread bush end face friction self-tightening type emergency brake bag " achieves not by means of hydraulic pressure or atmospheric pressure, insurance, pure machinery, without the need to the Manual braking system of engine power, but the foregoing invention hard thrust that screw thread rotation moves generation when braking easily is destroyed brake facing and even may be damaged brake system, the present invention is that the brake that makes carrying out improving on the basis of foregoing invention has the self-tightening type emergency brake of certain elastic behavior.

Summary of the invention

The object of this invention is to provide and a kind ofly the axostylus axostyle rotary power of automobile can be utilized mutually to be rubbed by two screw thread bushs and two screw thread bush end faces screw thread bush being rotated produce a kind of internal force to make the friction of brake increasing rub and suppress self-tightening type emergency brake arrangement.

Self-tightening type emergency brake arrangement is suppressed in two screw thread bush end face friction, comprises and is sleeved on a wheel male thread inner sleeve on axletree, wheel shaft thread jacket cylinder, a mobile screw thread inner sleeve and a mobile thread jacket cylinder; It is characterized in that:

1, wheel male thread inner sleeve is fixedly mounted on axletree, wheel male thread inner sleeve and axletree coaxial inner conductor rotate, the outside face of wheel male thread inner sleeve has outside thread, wheel shaft thread jacket jacket casing is screwed on the outside thread of wheel male thread inner sleeve, the inside face of wheel shaft thread jacket cylinder has negative thread, the outside thread of wheel male thread inner sleeve and the negative thread of wheel shaft thread jacket cylinder match, namely take turns male thread inner sleeve to rotate forward on the negative thread of wheel shaft thread jacket cylinder and wheel shaft thread jacket cylinder is moved right on the outside thread of wheel male thread inner sleeve or contrarotation is moved to the left, rotate forward as being seen as clickwise from the right side in figure left, wheel shaft thread jacket cylinder rotates forward and wheel shaft thread jacket cylinder is moved to the left on the outside thread of wheel male thread inner sleeve on the outside thread of wheel male thread inner sleeve in other words, the contrarotation on the outside thread of wheel male thread inner sleeve of wheel shaft thread jacket cylinder makes wheel shaft thread jacket cylinder move right on the outside thread of wheel male thread inner sleeve, the high order end of wheel male thread inner sleeve has a left set collar of left spring, a left spring is installed with between the right flank of the left set collar of left spring and the left side of wheel shaft thread jacket cylinder, the effect of left spring makes the negative thread high order end of wheel shaft thread jacket cylinder screw the outside thread high order end of top to wheel male thread inner sleeve, and after wheel male thread inner sleeve rotates forward i.e. dextrorotation relative to wheel shaft thread jacket cylinder then makes wheel shaft thread jacket cylinder move right on the outside thread of wheel male thread inner sleeve, when external force disappears, left spring can make wheel shaft thread jacket cylinder on the outside thread of wheel male thread inner sleeve, be moved to the left the negative thread high order end being returned to wheel shaft thread jacket cylinder and screw the state of top to the outside thread high order end of wheel male thread inner sleeve, the right side of wheel shaft thread jacket cylinder is installed with the external diameter wheel shaft thread jacket cylinder friction carrier ring larger than wheel shaft thread jacket cylinder, the right flank of wheel shaft thread jacket cylinder friction carrier ring is installed with a wheel shaft thread jacket cylinder flow ring, the external diameter of wheel shaft thread jacket cylinder friction carrier ring is equally large with the external diameter of wheel shaft thread jacket cylinder flow ring, the right flank of wheel shaft thread jacket cylinder flow ring is the wearing face of brake friction, there is a mobile screw thread inner sleeve ring friction on the right side of wheel shaft thread jacket cylinder flow ring, the right flank of mobile screw thread inner sleeve ring friction is fixedly mounted on mobile screw thread inner sleeve friction carrier ring, the external diameter of mobile screw thread inner sleeve ring friction, the external diameter of mobile screw thread inner sleeve friction carrier ring is equally large with the external diameter of wheel shaft thread jacket cylinder flow ring, mobile screw thread inner sleeve friction carrier ring is fixedly mounted on the high order end of mobile screw thread inner sleeve, the bore inner diameter of mobile screw thread inner sleeve is larger than the external diameter of axletree, and mobile screw thread inner sleeve and axletree are coaxial inner conductor installs, the endoporus of mobile screw thread inner sleeve does not contact with axletree, the outside face of mobile screw thread inner sleeve has outside thread, the outside thread of the outside face of mobile screw thread inner sleeve screws mobile thread jacket cylinder, the endoporus of mobile thread jacket cylinder has negative thread, the negative thread of mobile thread jacket cylinder and the outside thread of mobile screw thread inner sleeve match, and the outside thread of mobile screw thread inner sleeve can contrarotation make mobile screw thread inner sleeve be moved to the left on the negative thread of mobile thread jacket cylinder on the negative thread of mobile thread jacket cylinder, that is the negative thread moving thread jacket cylinder is contrary with the negative thread hand of spiral of wheel shaft thread jacket cylinder, the outside thread of mobile screw thread inner sleeve is contrary with the outside thread hand of spiral of wheel male thread inner sleeve, the low order end of mobile screw thread inner sleeve is installed with a right spring, the right-hand member of right spring is fixedly mounted on a right set collar of right spring, the cylindrical of the right set collar of right spring is fixed on the inside face of mobile thread jacket cylinder, the effect of right spring is the negative thread low order end making the outside thread low order end of mobile screw thread inner sleeve abut in mobile thread jacket cylinder all the time, and after the contrarotation on the negative thread of mobile thread jacket cylinder of mobile screw thread inner sleeve makes mobile screw thread inner sleeve be moved to the left on the negative thread of mobile thread jacket cylinder, the outside thread low order end that right spring can make mobile screw thread inner sleeve be returned to mobile screw thread inner sleeve on the negative thread of mobile thread jacket cylinder when external force disappears abuts in the negative thread low order end state of mobile thread jacket cylinder, the outer foil shoulder of multiple mobile thread jacket cylinder is had outside mobile thread jacket cylinder, in the brake outsourcing that the outer foil shoulder of mobile thread jacket cylinder is fastened in brake outsourcing medial surface in foil groove, the phase that matches the outer foil shoulder of mobile thread jacket cylinder and foil groove in brake outsourcing " engages ", make mobile thread jacket cylinder only in ahead running wheel shaft sway, and can not rotate around axletree, inside the right-hand member of mobile thread jacket cylinder, drum internal fixtion is provided with foil shoulder in multiple mobile thread jacket cylinder, in mobile thread jacket cylinder, foil shoulder is fastened in the outer foil groove of bearing external extension sleeve of the bearing external extension sleeve of mobile thread jacket cylinder right-hand member, in mobile thread jacket cylinder, the outer foil groove of foil shoulder and the bearing external extension sleeve phase that matches " engages ", to make in mobile thread jacket cylinder foil shoulder only with sway on the outer foil groove of bearing external extension sleeve, half section, the right side of bearing external extension sleeve is set on the left gear wheel of revolving wheel, revolving wheel, between the annular space between the right gear wheel of revolving wheel and long bearing, half section, the right side outer round surface of bearing external extension sleeve has outside thread, the internal circular surfaces of revolving wheel has negative thread, the phase that matches outside thread and the negative thread of revolving wheel of bearing external extension sleeve " engages ", rotating forward revolving wheel can make bearing external extension sleeve be moved to the left, the left gear wheel of revolving wheel and the right gear wheel of revolving wheel are fixed on the inwall of brake outsourcing, the effect of the left gear wheel of revolving wheel and the right gear wheel of revolving wheel limits revolving wheel to rotate around axletree and can not move the direction of axis line of ahead running wheel shaft, a brute spring is installed with between the right side of mobile thread jacket cylinder and the left gear wheel of revolving wheel, when the effect of brute spring is when brute spring is subject to the mobile thread jacket cylinder crimp to the right that brute spring left end is connected or brute spring is subject to the left gear wheel of the revolving wheel crimp to the right that brute spring right-hand member is connected or when being subject to left and right crimp simultaneously, brute spring can produce spring-return power and revolt this crimp effect, bearing external extension sleeve, the left gear wheel of revolving wheel, revolving wheel, between the right gear wheel of revolving wheel and axletree, there is a long bearing, the inner ring of long bearing is fixedly mounted on the outside face of axletree, the outer shroud of long bearing and the left gear wheel of revolving wheel, the right gear wheel of revolving wheel fix, brake outsourcing is fixed on vehicle frame, revolving wheel there is a revolving wheel draw bull stick, revolving wheel draws bull stick to stretch out brake outsourcing by the brake outsourcing arc opening of outsourcing of braking, and revolving wheel draws the brake bracing wire on bull stick top to be connected with parking brake bracing wire by multiple track adjusting wheel.

2, when automobile moves forward in process, when needing to pull emergency brake to pack tightly sudden stop, pull brake bracing wire to the right, driven rotary wheel rotates forward and bearing external extension sleeve is moved to the left, bearing external extension sleeve is moved to the left extruding brute spring and promotes mobile thread jacket cylinder and is moved to the left together with mobile screw thread inner sleeve, the right flank making the left surface of the mobile screw thread inner sleeve ring friction of mobile screw thread inner sleeve left end abut in wheel shaft thread jacket cylinder flow ring produces friction, because automobile is in the process of moving forward, the axletree of automobile rotates forward namely to see that axletree is clickwise from right to left, again because the wheel male thread inner sleeve be fixed on axletree can not do sway, can not rotate around axletree with bearing external extension sleeve and mobile thread jacket cylinder, so after the right flank abutting in wheel shaft thread jacket cylinder flow ring at the left surface of mobile screw thread inner sleeve ring friction produces friction, this is just equivalent to wheel shaft thread jacket cylinder and does contrarotation relative to axletree and wheel male thread inner sleeve, thus wheel shaft thread jacket cylinder is rotated on the outside thread of wheel male thread inner sleeve move right, maintain static because brake bracing wire hauls after revolving wheel rotates, so, wheel shaft thread jacket cylinder is rotated on the outside thread of wheel male thread inner sleeve move right, the movement to the right of wheel shaft thread jacket cylinder pushes mobile thread jacket cylinder and mobile screw thread inner sleeve moves right and extrudes brute spring, elastic-restoring force effect due to brute spring makes the mutual friction of mobile screw thread inner sleeve ring friction and wheel shaft thread jacket cylinder flow ring have certain elasticity and damping characteristics, wheel shaft thread jacket cylinder more moves right, the power promoting extruding brute spring is larger, make the mutual friction of mobile screw thread inner sleeve ring friction and wheel shaft thread jacket cylinder flow ring also larger simultaneously, thus the left surface making mobile screw thread inner sleeve ring friction more tightly, the right flank more effectively abutting in wheel shaft thread jacket cylinder flow ring produces the friction of larger friction, and then produce larger axletree brake weight, the friction of this larger friction impels again wheel shaft thread jacket cylinder to move right further on the outside thread of wheel male thread inner sleeve, and extruding brute spring makes brute spring produce larger screen resilience further, wheel shaft thread jacket cylinder moves right and extrudes brute spring and produces larger screen resilience, the friction of mobile screw thread inner sleeve ring friction and wheel shaft thread jacket cylinder flow ring is made to become increasing, this increasing friction constantly acts on again axletree and brakes to axletree, to the last move screw thread inner sleeve ring friction " to be engaged " with the friction of wheel shaft thread jacket cylinder flow ring axletree is stopped the rotation, complete the emergency brake under automobile forward travel state.

3, when automobile falls back in driving process backward, when needing to pull emergency brake to pack tightly sudden stop, pull brake bracing wire to the right, driven rotary wheel rotates forward and bearing external extension sleeve is moved to the left, bearing external extension sleeve is moved to the left extruding brute spring and promotes mobile thread jacket cylinder and is moved to the left together with mobile screw thread inner sleeve, the right flank making the left surface of the mobile screw thread inner sleeve ring friction of mobile screw thread inner sleeve left end abut in wheel shaft thread jacket cylinder flow ring produces friction, because automobile is falling back in driving process backward, the axletree of automobile is that namely contrarotation sees that axletree is left-hand revolution from right to left, because the wheel male thread inner sleeve be fixed on axletree can not do sway, can not rotate around axletree with bearing external extension sleeve and mobile thread jacket cylinder, so after the right flank abutting in wheel shaft thread jacket cylinder flow ring at the left surface of mobile screw thread inner sleeve ring friction produces friction, this is just equivalent to wheel shaft thread jacket cylinder and does contrarotation relative to axletree and wheel male thread inner sleeve, thus wheel shaft thread jacket cylinder is rotated on the outside thread of wheel male thread inner sleeve move right, this just makes the friction of mobile screw thread inner sleeve ring friction and wheel shaft thread jacket cylinder flow ring by the left-hand revolution transmission of power of axletree to mobile screw thread inner sleeve ring friction and mobile screw thread inner sleeve, mobile screw thread inner sleeve is made to do left-hand revolution in the negative thread of mobile thread jacket cylinder, thus mobile screw thread inner sleeve is moved to the left in the negative thread of mobile thread jacket cylinder, maintain static because brake bracing wire hauls after revolving wheel rotates, so, mobile screw thread inner sleeve is moved to the left in the negative thread of mobile thread jacket cylinder, mobile screw thread inner sleeve is moved to the left and makes mobile thread jacket cylinder produce movement to the right and extrude brute spring in the negative thread of mobile thread jacket cylinder, elastic-restoring force effect due to brute spring makes the mutual friction of mobile screw thread inner sleeve ring friction and wheel shaft thread jacket cylinder flow ring have certain elasticity and damping characteristics, mobile screw thread inner sleeve is got over rotation and is moved to the left, just produce mobile thread jacket cylinder more to move right, thus it is larger to produce the power promoting extruding brute spring, make the mutual friction of mobile screw thread inner sleeve ring friction and wheel shaft thread jacket cylinder flow ring also larger simultaneously, thus the left surface making mobile screw thread inner sleeve ring friction more tightly, the right flank more effectively abutting in wheel shaft thread jacket cylinder flow ring produces the friction of larger friction, and then produce larger axletree brake weight, the friction of this larger friction impels again mobile screw thread inner sleeve to be moved to the left further in the negative thread of mobile thread jacket cylinder thus produces mobile thread jacket cylinder and further moves right, and extruding brute spring makes brute spring produce larger screen resilience further, mobile thread jacket cylinder constantly moves right and extrudes brute spring and produces larger screen resilience, the friction of mobile screw thread inner sleeve ring friction and wheel shaft thread jacket cylinder flow ring is made to become increasing, this increasing friction constantly acts on again axletree and brakes to axletree, to the last move screw thread inner sleeve ring friction " to be engaged " with the friction of wheel shaft thread jacket cylinder flow ring axletree is stopped the rotation, complete the emergency brake under automobile forward travel state.

4, axletree can be major axis, also can be semiaxis.

the present invention compared with prior art has the following advantages:

1, the effect that brake of the present invention make use of brute spring makes brake have certain damping characteristics.

2. the present invention be unpowered under emergency brake arrangement, do not need engine power, electric-powered, the outer power such as hydraulic power, Pneumatic pressure power.

3, the present invention is arranged on the wheel axostyle of automobile, does not affect existing brake gear, takes up room little.

4. emergency brake of the present invention does not form locking and the drift produced causes accident.

5. the present invention makes simply, and braking effect is good, and particularly emergency brake is effective.

6, the present invention as auxiliary brake, also can replace existing hand brake device.

Accompanying drawing explanation

Fig. 1 is the axial section structural representation of the embodiment of the present invention;

Fig. 2 is A-A radial section schematic diagram embodiment illustrated in fig. 1;

Fig. 3 is B-B radial section schematic diagram embodiment illustrated in fig. 1;

Fig. 4 is C-C radial section schematic diagram embodiment illustrated in fig. 1;

Fig. 5 is D-D radial section schematic diagram embodiment illustrated in fig. 1.

In Fig. 1-5: 1, axletree 2, the left set collar 3 of left spring, left spring 4, wheel shaft thread jacket cylinder 5, wheel male thread inner sleeve 6, wheel shaft thread jacket cylinder friction carrier ring 7, wheel shaft thread jacket cylinder flow ring 8, mobile screw thread inner sleeve ring friction 9, mobile screw thread inner sleeve friction carrier ring 10, mobile screw thread inner sleeve 11, the outer foil shoulder 12 of mobile thread jacket cylinder, mobile thread jacket cylinder 13, right spring 14, the right set collar 15 of right spring, foil shoulder 16 in mobile thread jacket cylinder, the outer foil groove 17 of bearing external extension sleeve, bearing external extension sleeve 18, brute spring 19, brake outsourcing 20, revolving wheel 21, the left gear wheel 22 of revolving wheel, the right gear wheel 23 of revolving wheel, long bearing 24, bearing bead 25, foil groove 26 in brake outsourcing, brake outsourcing arc opening 27, revolving wheel draws bull stick 28, brake bracing wire 29, revolving wheel draws bull stick to draw a turn ultimate attainment position.

Detailed description of the invention

In the embodiment shown in Fig. 1-5: self-tightening type emergency brake arrangement is suppressed in two screw thread bush end face friction, comprise of being sleeved on axletree 1 and take turns male thread inner sleeve 5, wheel shaft thread jacket cylinder 4, mobile screw thread inner sleeve 10 and a mobile thread jacket cylinder 12, it is characterized in that: wheel male thread inner sleeve 5 is fixedly mounted on axletree 1, wheel male thread inner sleeve 5 rotates with axletree 1 coaxial inner conductor, the outside face of wheel male thread inner sleeve 5 has outside thread, wheel shaft thread jacket cylinder 4 cover is screwed on the outside thread of wheel male thread inner sleeve 5, the inside face of wheel shaft thread jacket cylinder 4 has negative thread, the outside thread of wheel male thread inner sleeve 5 and the negative thread of wheel shaft thread jacket cylinder 4 match, namely take turns male thread inner sleeve 5 to rotate forward on the negative thread of wheel shaft thread jacket cylinder 4 and wheel shaft thread jacket cylinder 4 is moved right on the outside thread of wheel male thread inner sleeve 5 or contrarotation is moved to the left, rotate forward as being seen as clickwise from the right side in figure left, wheel shaft thread jacket cylinder 4 rotates forward and wheel shaft thread jacket cylinder 4 is moved to the left on the outside thread of wheel male thread inner sleeve 5 on the outside thread of wheel male thread inner sleeve 5 in other words, wheel shaft thread jacket cylinder 4 contrarotation on the outside thread of wheel male thread inner sleeve 5 makes wheel shaft thread jacket cylinder 4 move right on the outside thread of wheel male thread inner sleeve 5, the high order end of wheel male thread inner sleeve 5 has a left set collar 2 of left spring, a left spring 3 is installed with between the right flank of the left set collar 2 of left spring and the left side of wheel shaft thread jacket cylinder 4, the effect of left spring 3 makes the negative thread high order end of wheel shaft thread jacket cylinder 4 screw the outside thread high order end of top to wheel male thread inner sleeve 5, and after wheel male thread inner sleeve 5 rotates forward i.e. dextrorotation relative to wheel shaft thread jacket cylinder 4 then makes wheel shaft thread jacket cylinder 4 move right on the outside thread of wheel male thread inner sleeve 5, when external force disappears, left spring 3 can make wheel shaft thread jacket cylinder 4 on the outside thread of wheel male thread inner sleeve 5, be moved to the left the negative thread high order end being returned to wheel shaft thread jacket cylinder 4 and screw the state of top to the outside thread high order end of wheel male thread inner sleeve 5, the right side of wheel shaft thread jacket cylinder 4 is installed with the external diameter wheel shaft thread jacket cylinder friction carrier ring 6 larger than wheel shaft thread jacket cylinder 4, the right flank of wheel shaft thread jacket cylinder friction carrier ring 6 is installed with a wheel shaft thread jacket cylinder flow ring 7, the external diameter of wheel shaft thread jacket cylinder friction carrier ring 6 is equally large with the external diameter of wheel shaft thread jacket cylinder flow ring 7, the right flank of wheel shaft thread jacket cylinder flow ring 7 is the wearing face of brake friction, there is a mobile screw thread inner sleeve ring friction 8 on the right side of wheel shaft thread jacket cylinder flow ring 7, the right flank of mobile screw thread inner sleeve ring friction 8 is fixedly mounted on mobile screw thread inner sleeve friction carrier ring 9, the external diameter of mobile screw thread inner sleeve ring friction 8, the external diameter of mobile screw thread inner sleeve friction carrier ring 9 is equally large with the external diameter of wheel shaft thread jacket cylinder flow ring 7, mobile screw thread inner sleeve friction carrier ring 9 is fixedly mounted on the high order end of mobile screw thread inner sleeve 10, the bore inner diameter of mobile screw thread inner sleeve 10 is larger than the external diameter of axletree 1, and mobile screw thread inner sleeve 10 with axletree 1 for coaxial inner conductor is installed, the endoporus of mobile screw thread inner sleeve 10 does not contact with axletree 1, the outside face of mobile screw thread inner sleeve 10 has outside thread, the outside thread of the outside face of mobile screw thread inner sleeve 10 screws mobile thread jacket cylinder 12, the endoporus of mobile thread jacket cylinder 12 has negative thread, the negative thread of mobile thread jacket cylinder 12 and the outside thread of mobile screw thread inner sleeve 10 match, and the outside thread of mobile screw thread inner sleeve 10 can contrarotation make mobile screw thread inner sleeve 10 be moved to the left on the negative thread of mobile thread jacket cylinder 12 on the negative thread of mobile thread jacket cylinder 12, that is the negative thread moving thread jacket cylinder 12 is contrary with the negative thread hand of spiral of wheel shaft thread jacket cylinder 4, the outside thread of mobile screw thread inner sleeve 10 is contrary with the outside thread hand of spiral of wheel male thread inner sleeve 5, the low order end of mobile screw thread inner sleeve 10 is installed with a right spring 13, the right-hand member of right spring 13 is fixedly mounted on a right set collar 14 of right spring, the cylindrical of the right set collar of right spring 14 is fixed on the inside face of mobile thread jacket cylinder 12, the effect of right spring 13 is the negative thread low order ends making the outside thread low order end of mobile screw thread inner sleeve 10 abut in mobile thread jacket cylinder 12 all the time, and after the contrarotation on the negative thread of mobile thread jacket cylinder 12 of mobile screw thread inner sleeve 10 makes mobile screw thread inner sleeve 10 be moved to the left on the negative thread of mobile thread jacket cylinder 12, the outside thread low order end that right spring 13 can make mobile screw thread inner sleeve 10 be returned to mobile screw thread inner sleeve 10 on the negative thread of mobile thread jacket cylinder 12 when external force disappears abuts in the negative thread low order end state of mobile thread jacket cylinder 12, the outer foil shoulder 11 of multiple mobile thread jacket cylinder is had outside mobile thread jacket cylinder 12, in the brake outsourcing that the outer foil shoulder 11 of mobile thread jacket cylinder is fastened in brake outsourcing 19 medial surface in foil groove 25, the phase that matches the outer foil shoulder 11 of mobile thread jacket cylinder and foil groove 25 in brake outsourcing " engages ", make mobile thread jacket cylinder 12 only in ahead running wheel shaft 1 sway, and can not rotate around axletree 1, inside the right-hand member of mobile thread jacket cylinder 12, drum internal fixtion is provided with foil shoulder 15 in multiple mobile thread jacket cylinder, in mobile thread jacket cylinder, foil shoulder 15 is fastened in the outer foil groove 16 of bearing external extension sleeve of the bearing external extension sleeve 17 of mobile thread jacket cylinder 12 right-hand member, in mobile thread jacket cylinder, the outer foil groove 16 of foil shoulder 15 and the bearing external extension sleeve phase that matches " engages ", to make in mobile thread jacket cylinder foil shoulder 15 only with sway on the outer foil groove 16 of bearing external extension sleeve, half section, the right side of bearing external extension sleeve 17 is set on the left gear wheel 21 of revolving wheel, revolving wheel 20, between the annular space between the right gear wheel 22 of revolving wheel and long bearing 23, half section, the right side outer round surface of bearing external extension sleeve 17 has outside thread, the internal circular surfaces of revolving wheel 20 has negative thread, the phase that matches outside thread and the negative thread of revolving wheel 20 of bearing external extension sleeve 17 " engages ", rotating forward revolving wheel 20 can make bearing external extension sleeve 17 be moved to the left, the left gear wheel of revolving wheel 21 and the right gear wheel 22 of revolving wheel are fixed on the inwall of brake outsourcing 19, the effect of the left gear wheel of revolving wheel 21 and the right gear wheel 22 of revolving wheel limits revolving wheel 20 to rotate around axletree 1 and can not move the direction of axis line of ahead running wheel shaft 1, a brute spring 18 is installed with between the right side of mobile thread jacket cylinder 12 and the left gear wheel 21 of revolving wheel, when the effect of brute spring 18 is when brute spring 18 is subject to mobile thread jacket cylinder 12 crimp to the right that brute spring 18 left end is connected or brute spring 18 is subject to left gear wheel 21 crimp to the right of revolving wheel that brute spring 18 right-hand member is connected or when being subject to left and right crimp simultaneously, brute spring 18 can produce spring-return power and revolt this crimp effect, bearing external extension sleeve 17, the left gear wheel 21 of revolving wheel, revolving wheel 20, a long bearing 23 is had between the right gear wheel 22 of revolving wheel and axletree 1, the inner ring of long bearing 23 is fixedly mounted on the outside face of axletree 1, the outer shroud of long bearing 23 and the left gear wheel 21 of revolving wheel, the right gear wheel 22 of revolving wheel fixes, brake outsourcing 19 is fixed on vehicle frame, revolving wheel 20 there is a revolving wheel draw bull stick 27, revolving wheel draws bull stick 27 to stretch out brake outsourcing 19 by the brake outsourcing arc opening 26 of brake outsourcing 19, revolving wheel draws the brake bracing wire 28 on bull stick 27 top to be connected with parking brake bracing wire by multiple track adjusting wheel.

When automobile moves forward in process, when needing to pull emergency brake to pack tightly sudden stop, pull brake bracing wire 28 to the right, driven rotary wheel 20 rotates forward and bearing external extension sleeve 17 is moved to the left, bearing external extension sleeve 17 is moved to the left extruding brute spring 18 and promotes mobile thread jacket cylinder 12 and is moved to the left together with mobile screw thread inner sleeve 10, the right flank making the left surface of the mobile screw thread inner sleeve ring friction 8 of mobile screw thread inner sleeve 10 left end abut in wheel shaft thread jacket cylinder flow ring 7 produces friction, because automobile is in the process of moving forward, the axletree 1 of automobile rotates forward namely to see that axletree 1 is for clickwise from right to left, again because the wheel male thread inner sleeve 5 be fixed on axletree 1 can not do sway, can not rotate around axletree 1 with bearing external extension sleeve 17 and mobile thread jacket cylinder 12, so after the right flank abutting in wheel shaft thread jacket cylinder flow ring 7 at the left surface of mobile screw thread inner sleeve ring friction 8 produces friction, this is just equivalent to wheel shaft thread jacket cylinder 4 and does contrarotation relative to axletree 1 and wheel male thread inner sleeve 5, thus wheel shaft thread jacket cylinder 4 is rotated on the outside thread of wheel male thread inner sleeve 5 move right, maintain static because brake bracing wire 28 hauls after revolving wheel 20 rotates, so, wheel shaft thread jacket cylinder 4 is rotated on the outside thread of wheel male thread inner sleeve 5 move right, wheel shaft thread jacket cylinder 4 movement to the right pushes mobile thread jacket cylinder 12 and mobile screw thread inner sleeve 10 moves right and extrudes brute spring 18, elastic-restoring force effect due to brute spring 18 makes mobile screw thread inner sleeve ring friction 8 have certain elasticity and damping characteristics with the mutual friction of wheel shaft thread jacket cylinder flow ring 7, wheel shaft thread jacket cylinder 4 more moves right, the power promoting extruding brute spring 18 is larger, make mobile screw thread inner sleeve ring friction 8 also larger with the mutual friction of wheel shaft thread jacket cylinder flow ring 7 simultaneously, thus the left surface making mobile screw thread inner sleeve ring friction 8 more tightly, the right flank more effectively abutting in wheel shaft thread jacket cylinder flow ring 7 produces the friction of larger friction, and then produce larger axletree 1 brake weight, the friction of this larger friction impels again wheel shaft thread jacket cylinder 4 to move right further on the outside thread of wheel male thread inner sleeve 5, and extruding brute spring 18 makes brute spring 18 produce larger screen resilience further, wheel shaft thread jacket cylinder 4 moves right and extrudes brute spring 18 and produces larger screen resilience, mobile screw thread inner sleeve ring friction 8 is made to become increasing with the friction of wheel shaft thread jacket cylinder flow ring 7, this increasing friction constantly acts on again axletree 1 pair of axletree 1 and brakes, to the last move screw thread inner sleeve ring friction 8 " to be engaged " with the friction of wheel shaft thread jacket cylinder flow ring 7 axletree 1 is stopped the rotation, complete the emergency brake under automobile forward travel state.

When automobile falls back in driving process backward, when needing to pull emergency brake to pack tightly sudden stop, pull brake bracing wire 28 to the right, driven rotary wheel 20 rotates forward and bearing external extension sleeve 17 is moved to the left, bearing external extension sleeve 17 is moved to the left extruding brute spring 18 and promotes mobile thread jacket cylinder 12 and is moved to the left together with mobile screw thread inner sleeve 10, the right flank making the left surface of the mobile screw thread inner sleeve ring friction 8 of mobile screw thread inner sleeve 10 left end abut in wheel shaft thread jacket cylinder flow ring 7 produces friction, because automobile is falling back in driving process backward, the axletree 1 of automobile is that namely contrarotation sees that axletree 1 is for left-hand revolution from right to left, because the wheel male thread inner sleeve 5 be fixed on axletree 1 can not do sway, can not rotate around axletree 1 with bearing external extension sleeve 17 and mobile thread jacket cylinder 12, so after the right flank abutting in wheel shaft thread jacket cylinder flow ring 7 at the left surface of mobile screw thread inner sleeve ring friction 8 produces friction, this is just equivalent to wheel shaft thread jacket cylinder 4 and does contrarotation relative to axletree 1 and wheel male thread inner sleeve 5, thus wheel shaft thread jacket cylinder 4 is rotated on the outside thread of wheel male thread inner sleeve 5 move right, this just makes the friction of mobile screw thread inner sleeve ring friction 8 and wheel shaft thread jacket cylinder flow ring 7 by the left-hand revolution transmission of power of axletree 1 to mobile screw thread inner sleeve ring friction 8 and mobile screw thread inner sleeve 10, mobile screw thread inner sleeve 10 is made to do left-hand revolution in the negative thread of mobile thread jacket cylinder 12, thus mobile screw thread inner sleeve 10 is moved to the left in the negative thread of mobile thread jacket cylinder 12, maintain static because brake bracing wire 28 hauls after revolving wheel 20 rotates, so, mobile screw thread inner sleeve 10 is moved to the left in the negative thread of mobile thread jacket cylinder 12, mobile screw thread inner sleeve 10 is moved to the left and makes mobile thread jacket cylinder 12 produce movement to the right and extrude brute spring 18 in the negative thread of mobile thread jacket cylinder 12, elastic-restoring force effect due to brute spring 18 makes mobile screw thread inner sleeve ring friction 8 have certain elasticity and damping characteristics with the mutual friction of wheel shaft thread jacket cylinder flow ring 7, mobile screw thread inner sleeve 10 is got over rotation and is moved to the left, just produce mobile thread jacket cylinder 12 more to move right, thus it is larger to produce the power promoting extruding brute spring 18, make mobile screw thread inner sleeve ring friction 8 also larger with the mutual friction of wheel shaft thread jacket cylinder flow ring 7 simultaneously, thus the left surface making mobile screw thread inner sleeve ring friction 8 more tightly, the right flank more effectively abutting in wheel shaft thread jacket cylinder flow ring 7 produces the friction of larger friction, and then produce larger axletree 1 brake weight, the friction of this larger friction impels again mobile screw thread inner sleeve 10 to be moved to the left further in the negative thread of mobile thread jacket cylinder 12 thus produces mobile thread jacket cylinder 12 and further moves right, and extruding brute spring 18 makes brute spring 18 produce larger screen resilience further, mobile thread jacket cylinder 12 constantly moves right and extrudes brute spring 18 and produces larger screen resilience, mobile screw thread inner sleeve ring friction 8 is made to become increasing with the friction of wheel shaft thread jacket cylinder flow ring 7, this increasing friction constantly acts on again axletree 1 pair of axletree 1 and brakes, to the last move screw thread inner sleeve ring friction 8 " to be engaged " with the friction of wheel shaft thread jacket cylinder flow ring 7 axletree 1 is stopped the rotation, complete the emergency brake under automobile forward travel state.

Axletree 1 can be major axis, also can be semiaxis.

Claims (1)

1. self-tightening type emergency brake arrangement is suppressed in pair screw thread bush end face friction, comprises and is sleeved on wheel male thread inner sleeve (5) on axletree (1), wheel shaft thread jacket cylinder (4), a mobile screw thread inner sleeve (10) and a mobile thread jacket cylinder (12), it is characterized in that: wheel male thread inner sleeve (5) is fixedly mounted on axletree (1), wheel male thread inner sleeve (5) and axletree (1) coaxial inner conductor rotate, the outside face of wheel male thread inner sleeve (5) has outside thread, wheel shaft thread jacket cylinder (4) cover is screwed on the outside thread of wheel male thread inner sleeve (5), the high order end of wheel male thread inner sleeve (5) has a left set collar of left spring (2), a left spring (3) is installed with between the right flank of the left set collar of left spring (2) and the left side of wheel shaft thread jacket cylinder (4), the right side of wheel shaft thread jacket cylinder (4) is installed with wheel shaft thread jacket cylinder friction carrier ring (6), the right flank of wheel shaft thread jacket cylinder friction carrier ring (6) is installed with wheel shaft thread jacket cylinder flow ring (7), there is a mobile screw thread inner sleeve ring friction (8) on the right side of wheel shaft thread jacket cylinder flow ring (7), the right flank of mobile screw thread inner sleeve ring friction (8) is fixedly mounted on mobile screw thread inner sleeve friction carrier ring (9), mobile screw thread inner sleeve friction carrier ring (9) is fixedly mounted on the high order end of mobile screw thread inner sleeve (10), the endoporus of mobile screw thread inner sleeve (10) does not contact with axletree (1), and the outside face of mobile screw thread inner sleeve (10) has outside thread, there is the outer foil shoulder (11) of multiple mobile thread jacket cylinder in mobile thread jacket cylinder (12) outside, in the brake outsourcing that the outer foil shoulder (11) of mobile thread jacket cylinder is fastened in brake outsourcing (19) medial surface in foil groove (25), the phase that matches the outer foil shoulder (11) of mobile thread jacket cylinder and foil groove (25) in brake outsourcing " engages ", bearing external extension sleeve (17), the left gear wheel of revolving wheel (21), revolving wheel (20), a long bearing (23) is had between the right gear wheel of revolving wheel (22) and axletree (1), the inner ring of long bearing (23) is fixedly mounted on the outside face of axletree (1), the outer shroud of long bearing (23) and the left gear wheel of revolving wheel (21), the right gear wheel of revolving wheel (22) fixes, brake outsourcing (19) is fixed on vehicle frame.