CN204452423U - Self-propelled vehicle and electric motor car mechanical brake type back axle - Google Patents

Self-propelled vehicle and electric motor car mechanical brake type back axle Download PDF

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Publication number
CN204452423U
CN204452423U CN201520046257.0U CN201520046257U CN204452423U CN 204452423 U CN204452423 U CN 204452423U CN 201520046257 U CN201520046257 U CN 201520046257U CN 204452423 U CN204452423 U CN 204452423U
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brake
arm
vehicle
axle
steady brace
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CN201520046257.0U
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Chinese (zh)
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李邦华
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李邦华
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Abstract

The utility model discloses a kind of self-propelled vehicle and electric motor car mechanical brake type back axle, comprise jack shaft, rear bridge tube, braking device, wheel hub, steady brace, steady brace seat, bracket arm and handler, jack shaft is positioned at rear bridge tube, braking device comprises shoe sole, camshaft, brake arm and two brake shoes, brake shoe is positioned on shoe sole, brake shoe is provided with brake facing, camshaft is between two brake shoes, and camshaft and shoe sole are rotationally connected, camshaft and brake arm removably connect, shoe sole is positioned at back axle tube end, steady brace seat is positioned on rear bridge tube, steady brace and steady brace seat hinged, bracket arm and handler hinged, bracket arm and brake arm removably connect, brake arm is provided with multiple connecting bore.There is brake effort, the uncontrollable defect of effective arm of force of brake arm in the back axle that the utility model overcomes the underloading vehicle of prior art.

Description

Self-propelled vehicle and electric motor car mechanical brake type back axle
Technical field
The utility model belongs to the back axle field of underloading vehicle, is specifically related to a kind of self-propelled vehicle and electric motor car mechanical brake type back axle.
Background technology
At present, the brake system of self-propelled vehicle and battery-driven car is divided into propons brake portion and back axle brake portion, this two brake portion generally adopts the brake modes of brake facing friction wheel hub side, and two brake handles namely on handlebar connect propons brake portion and back axle brake portion respectively.During brake, brake handle makes the wheel hub on propons and back axle stop operating by wirerope driving brake sheet.Because the speed of self-propelled vehicle and battery-driven car is fast, weight is large.Usual vehicle rear occupies the main by weight of vehicle, has very large inertia, and the key of car brakeing is as can be seen here back axle brake portion.Back axle braking is divided into oil brake and mechanical braking by brake mode.Oil brake in the plunger shaft in the brake system of back axle, makes piston rod promotion brake shoe that the brake facing on brake shoe is expanded outwardly by the Hydraulic Station on vehicle body for hydraulic oil to brake wheel hub, thus reach the effect of back axle braking.Mechanical braking drives brake arm to rotate by wirerope (or pull bar), thus realize camshaft rotation, and camshaft makes brake shoe expand outwardly thus the brake facing on brake shoe is braked wheel hub.Oil brake needs independent external Hydraulic Station to the hydraulic brake system fuel feeding of back axle, and cost of manufacture is high.In hydraulic brake system, the frequent and maintenance trouble of leakage of oil, removes and installs trouble when changing brake facing after brake facing wearing and tearing.Mechanical braking does not need external Hydraulic Station, and without the need to considering Leakage, when changing brake facing, simple to operation.Therefore common underloading vehicle adopts mechanical braking usually.
Existing underloading vehicle rear axle brake system comprises axle drive shaft, rear bridge tube, shoe sole, brake shoe, steady brace, wheel hub, rear bridge tube welds with shoe sole, brake shoe and shoe sole removably connect, brake shoe is provided with brake facing, wheel hub and axle drive shaft are bolted, and brake facing is positioned at wheel hub.Usually on rear bridge tube, be welded with steel plate seat and steady brace seat, steel plate seat and steel spring are bolted, and rear bridge tube is connected by U-bolt with steel spring.Steel spring is near the end of headstock and vehicle frame sliding block joint, and the vehicle head end of steel spring can be slided in the chute on vehicle frame.Steel spring is near the end of vehicle tail end and vehicle frame and be sliding block joint, and the vehicle tail end of steel spring can slide in the chute on vehicle frame.Steady brace seat on one end of steady brace and rear bridge tube is by pinned connection, and the other end and the vehicle frame of steady brace also pass through pinned connection.Vehicle is when braking, and stretcher drives bracket arm motion, and bracket arm drives brake arm to rotate, and brake arm rotarily drives camshaft and rotates, and camshaft makes brake shoe expand outwardly, thus the brake facing on brake shoe is braked wheel hub.
When vehicle is fully loaded and unloaded, the friction force needed for brake is different.But the length of the brake arm of prior art is fixing, namely in brake process, the arm of force is constant.Vehicle is unloaded and the effective arm of force of at full load is all inconvenient, is inconvenient to use.Chaufeur is when the vehicle that long-duration driving is fully loaded, the dynamics that touches on the brake is larger, but when driving suddenly empty-car, due to the subconsciousness of people, driver empty-car touches on the brake and also can suddenly as during the fully loaded vehicle of driving touch on the brake, now just there will be vehicle suddenly to stop, producing extreme shock can there is safety misadventure.If chaufeur is when the vehicle of long-duration driving zero load, the dynamics that touches on the brake is less, but when driving suddenly fully loaded vehicle, due to the subconsciousness of people, driver is fully loaded with vehicle and touches on the brake and also gently to touch on the brake as during driving empty-car, now just there will be vehicle to stop incessantly, braking distance is long, the accidents such as vehicle rear-end collision may occur.
Because the individual difference of chaufeur in actual life, require to differ to comfort level during brake.Such as: Ms due to foot-operated dynamics less, compare effort when touching on the brake, particularly vehicle heavy duty time, vehicle brake, needs larger braking force.But the length of existing brake arm immobilizes, foot-operated dynamics can only be increased to increase braking force during brake in brake process.Different adjustment cannot be done for different clients.
Vehicle at full load, vehicle frame, because the gravity of goods is to pressing down, makes the vehicle tail end slippage backward of steel spring, and the vehicle head end slippage forward of steel spring, realizes the effect of damping, but is connected with steady brace due to rear bridge tube, stops back axle to move backward.Because steady brace and steady brace seat are hinged, therefore back axle and steady brace can relatively rotate.In the process that vehicle frame presses down, steady brace holds rear bridge tube, and slight twisting occurs rear bridge tube.Due to the bearing pin not conllinear at the axial line of the bearing pin at the vehicle frame end points place of the steady brace of existing underloading vehicle and handler end points (both the end points of bracket arm and the handler hinged place) place of bracket arm.When when vehicle frame presses down, the vehicle frame end points (both the end points of steady brace and vehicle frame hinged place) of steady brace moves downward, by the vehicle frame end points (point of steady brace and vehicle frame junction) of steady brace, the handler end points of bracket arm, four limits that the strong point (both steady brace and steady brace seat hinge-point) of brake arm run-on point (both brake arm be connected with bracket arm point) and steady brace is formed are distorted and are out of shape, the distance between the strong point of steady brace and brake arm run-on point is made to change (both, bridge tube twisted), the angle between brake arm and bracket arm is made to become large, effective arm of force of brake arm is shortened, thus affect the brake distance of vehicle, make brake apart from elongated, affect vehicle safety.
Utility model content
The technical problems to be solved in the utility model is the back axle existence brake effort for the underloading vehicle of prior art, and the defect of brake distance, provides a kind of self-propelled vehicle and electric motor car mechanical brake type back axle, has brake laborsaving, brake apart from short feature.
In order to solve the problems of the technologies described above, the utility model provides following technical scheme: self-propelled vehicle and electric motor car mechanical brake type back axle, comprise jack shaft, rear bridge tube, braking device, wheel hub, steady brace, steady brace seat, bracket arm and handler, described jack shaft is positioned at rear bridge tube, described braking device comprises shoe sole, camshaft, brake arm and two brake shoes, described brake shoe is positioned on shoe sole, described brake shoe is provided with brake facing, described camshaft is between two brake shoes, and camshaft and shoe sole are rotationally connected, camshaft and brake arm removably connect, described shoe sole is positioned at back axle tube end, described steady brace seat is positioned on rear bridge tube, described steady brace and steady brace seat hinged, described bracket arm and handler hinged, described bracket arm and brake arm removably connect, described brake arm is provided with multiple connecting bore.
Adopt self-propelled vehicle and the electric motor car mechanical brake type back axle of technical solutions of the utility model, comprise jack shaft, rear bridge tube, braking device, wheel hub, steady brace, steady brace seat and vehicle-frame seat; Jack shaft provides power to wheel hub, thus wheel hub is rotated.Rear bridge tube and jack shaft empty set, make rear bridge tube not rotate with jack shaft.Described steady brace and steady brace seat hinged, described steady brace and the hinged steady brace of vehicle-frame seat hold after bridge tube, prevent rear bridge tube backward the tailstock move.Shoe sole and brake shoe removably connect, and are convenient for changing the brake facing on brake shoe.Brake arm is provided with multiple connecting bore, the convenient hinge-point position regulating bracket arm and brake arm, thus reaches the effective arm of force changing brake arm, compares labour-saving effect during to reach brake.
Principle of work of the present utility model and beneficial effect are: during concrete this mechanical brake type back axle of use, select the connecting bore on brake arm to be connected with bracket arm according to the concrete service condition of vehicle.If the usual bearing goods of vehicle is comparatively light, when selecting the connecting bore on brake arm, select the connecting bore near rear bridge tube.If when the usual bearing goods of vehicle is heavier, select the connecting bore away from rear bridge tube.During brake, bracket arm drives brake arm to rotate, and brake arm makes camshaft rotate, and camshaft makes brake shoe expand outwardly, thus the brake facing be positioned on brake shoe is expanded outwardly, and brake facing is braked wheel hub.More laborsaving bracket arm is connected large brake during with the connecting bore of diverse location on brake arm, change stretcher comfort level.Existing brake arm only has a connecting bore, and effective arm of force of brake arm is a fixed value, and vehicle is unloaded and the effective arm of force of at full load is all inconvenient, is inconvenient to use.Chaufeur is when the vehicle that long-duration driving is fully loaded, the dynamics that touches on the brake is larger, but when driving suddenly empty-car, due to the subconsciousness of people, driver empty-car touches on the brake and also can suddenly as during the fully loaded vehicle of driving touch on the brake, now just there will be vehicle suddenly to stop, producing extreme shock can there is safety misadventure.If chaufeur is when the vehicle of long-duration driving zero load, the dynamics that touches on the brake is less, but when driving suddenly fully loaded vehicle, due to the subconsciousness of people, driver is fully loaded with vehicle and touches on the brake and also gently to touch on the brake as during driving empty-car, now just there will be vehicle to stop incessantly, braking distance is long, safety misadventure may occur.The brake arm of this kind of structure can regulate effective arm of force of brake arms according to the different demands of client thus reach when pin when meeting vehicle brake to greatest extent steps on brake pedal without the need to too large dynamics, also takes into account the stretcher stroke range that pin can bear simultaneously.The relation between the stroke of stretcher and foot-operated dynamics is solved according to the individual difference actv. of client.Required foot-operated dynamics is reduced by the braking distance increasing stretcher.
Further, the connecting bore on described brake arm is longitudinally evenly distributed.The convenient connection regulating brake arm and bracket arm, avoids occurring large jump when regulating effective arm of force of brake arm.
Further, the connection hole on described brake arm is provided with setscrew nut.Brake arm installs threaded bearing pin without the need to independent mounting nuts when also bracket arm connects, and is install simple and fast more.
Further, also comprise anti-rotational pull bar, anti-rotational drag link bearing and vehicle-frame seat, one end and the anti-rotational drag link bearing of described anti-rotational pull bar are hinged, and the other end and the vehicle-frame seat of anti-rotational pull bar are hinged; Described anti-rotational drag link bearing is positioned on shoe sole.Rear bridge tube, steady brace and anti-rotational pull bar form triangle, anti-rotational pull bar and steady brace combined action prevent shoe sole from rotating, avoid rear bridge tube to twist and make the angle between brake arm and bracket arm become large, shorten effective arm of force of brake arm, thus cause the brake of vehicle apart from increasing.
Further, described anti-rotational drag link bearing is positioned on shoe sole and is positioned on rear bridge tube instead of anti-rotational drag link bearing.For anti-rotational drag link bearing welds with shoe sole, anti-rotational drag link bearing welds convenient with rear bridge tube.
Further, the hinged employing hinge of described anti-rotational pull bar and vehicle-frame seat, bracket arm and the hinged of handler also adopt hinge, and the axial line conllinear of the axial line of anti-rotational pull bar and the hinged bearing pin of vehicle-frame seat and bracket arm and the hinged bearing pin of handler.Vehicle at full load vehicle frame moves down, bracket arm rotates around the hinge-point (brake arm and the hinged point of bracket arm) of brake arm, rear bridge tube, steady brace and anti-rotational pull bar form the hinge-point of triangle around anti-rotational pull bar around vehicle-frame seat (both anti-rotational pull bar and the hinged point of vehicle-frame seat) axial line and rotate, the relative position of the hinge-point of brake arm and the hinge-point of anti-rotational drag link bearing does not change, and both between shoe sole with brake arm, relative twisting does not occur.Avoid self-stopping generation.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, technical solutions of the utility model are further illustrated:
Fig. 1 is the structural representation of the utility model self-propelled vehicle and electric motor car mechanical brake type back axle embodiment;
Fig. 2 is the Facad structure schematic diagram of braking device in Fig. 1;
Fig. 3 is the reverse side schematic diagram of Fig. 2;
Fig. 4 is the structural representation of the utility model self-propelled vehicle and electric motor car mechanical brake type back axle embodiment when being connected with vehicle frame.
Reference numeral in figure: 1-jack shaft, bridge tube after 2-, 3-braking device, 31-shoe sole, 32-brake facing, 33-camshaft, 34-hinged block, 35-brake arm, 36-brake shoe, 37-spring, 4-wheel hub, 5-steady brace group, 51-steady brace, 52-steady brace seat, 53-vehicle-frame seat, 6-bracket arm group, 61-bracket arm, 62-handler, the anti-rotational pull bar group of 7-, the anti-rotational pull bar of 71-, the anti-rotational drag link bearing of 72-, 8-connecting bore, 9-vehicle frame, 10-steel spring, power rail 11.
Detailed description of the invention
As shown in Figure 1, Figure 2, Figure 3, Figure 4, self-propelled vehicle and electric motor car mechanical brake type back axle, comprise jack shaft 1, rear bridge tube 2, shoe sole group 3, wheel hub 4, steady brace group 5, bracket arm group 6 and anti-rotational pull bar group 7.Steady brace group 5 comprises: steady brace 51, steady brace seat 52 and vehicle-frame seat 53.Bracket arm group 6 comprises bracket arm 61 and handler 62, and one end of bracket arm 61 and brake arm 35 are by hinge, and the other end and handler 62 are by hinge, and handler 62 and vehicle frame 9 pass through hinge.Anti-rotational pull bar group 7 comprises anti-rotational pull bar 71 and anti-rotational drag link bearing 72, anti-rotational pull bar 71 passes through hinge with anti-rotational drag link bearing 72, anti-rotational pull bar 71 passes through hinge with vehicle-frame seat 53, vehicle-frame seat 53 welds with vehicle frame 9, and anti-rotational drag link bearing 72 is welded on shoe sole 31.Jack shaft 1 is positioned at rear bridge tube 2, shoe sole group 3 comprises shoe sole 31, brake facing 32, camshaft 33, hinged block 34, brake arm 35 and two arc brake hoof 36, shoe sole 31 is connected by hinged block 34 with brake shoe 36, and brake facing 32 and brake shoe 36 pass through pinned connection.Camshaft 33 is between two brake shoes 36, and camshaft 33 and shoe sole 31 are rotationally connected, and are provided with spring 37 between brake shoe 36.The two ends of spring 37 connect two brake shoes 36 respectively.Camshaft 33 is threaded with brake arm 35, and rear bridge tube 2 welds with shoe sole 31.Steady brace 51 and steady brace seat 52 are by hinge, and steady brace 51 and vehicle-frame seat 53 are by hinge, and vehicle-frame seat 53 is welded on bottom vehicle frame 9, and steady brace seat 52 welds with rear bridge tube 2.The aperture that brake arm 35 is provided with three longitudinal arrangements is the connecting bore 8 of 10 millimeters.
In the specific implementation, the vehicle head end of the steel spring 10 at underloading vehicle rear axle place and vehicle frame 9 sliding block joint, the vehicle tail end of steel spring 10 and vehicle frame 9 sliding block joint.The axial line conllinear of the axial line of the bearing pin that anti-rotational pull bar 71 is hinged with vehicle-frame seat 53 and bracket arm 61 and the hinged bearing pin of handler 62.Regulate bracket arm 61 hinged with the connecting bore 8 of brake arm 35 according to the service condition of vehicle.Anti-rotational drag link bearing 72 is one-body molded with shoe sole 31.Vehicle at full load, vehicle frame 9 increases to pressing down due to weight, and back axle is moved to tailstock direction, but is connected and fixed pull bar 51 bearing and vehicle-frame seat 53 due to steady brace 51, makes steady brace 51 stop back axle to move to tailstock direction.Rear bridge tube 2, steady brace 51 and anti-rotational pull bar 71 form triangle.Due to leg-of-mutton good stability.Therefore when vehicle is fully loaded or unloaded, moving up and down appears in vehicle frame 9, now slides in the chute of two end points of steel spring 10 respectively on vehicle frame 9, steel spring 10 pairs of vehicle frames 9 cushioning effects.
Due to the axial line conllinear of axial line and the bracket arm 61 of the hinged bearing pin of anti-rotational pull bar 71 and vehicle-frame seat 53 and the hinged bearing pin of handler 62.Therefore in the process moved down at vehicle frame 9, bracket arm 61 rotates around the hinge-point (point that brake arm 35 is hinged with bracket arm 61) of brake arm 35, rear bridge tube 2, steady brace 51 and anti-rotational pull bar 71 form triangle and rotate around the hinge-point (point that both anti-rotational pull bar 71 is hinged with vehicle-frame seat 53) of vehicle-frame seat 53, the relative position of the hinge-point of brake arm 35 and the hinge-point of anti-rotational drag link bearing 72 does not change, and both between shoe sole 31 with brake arm 35, relative twisting does not occur.Avoid and make brake arm 35 be in twisted posture because relative twisting occurs for brake arm 35 and shoe sole 31, when causing dubbing brake, occur emergency brake phenomenon, make vehicle produce enormous impact.
During concrete brake, power rail drives handler 62 to rotate, handler 62 drives bracket arm 61 to move thus makes bracket arm 61 pull brake arm 35, relative position between the hinge-point of the hinge-point of brake arm 35 and anti-rotational drag link bearing 72 is changed, brake arm 35 rotates and camshaft 33 is rotated, and camshaft 33 rotates and brake shoe 36 expanded outwardly thus the brake facing 32 on brake shoe 36 is expanded outwardly to formulate wheel hub 4.When after wheel hub 4 end of braking.Releasing of brake handle, makes handler 62, brake arm 35, camshaft 33 return to initial position, and brake shoe 36, by the elastic force of spring 37, is withdrawn into initial condition.
For a person skilled in the art; under the prerequisite not departing from the utility model structure; can also make some distortion and improvement, these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.

Claims (6)

1. self-propelled vehicle and electric motor car mechanical brake type back axle, comprise jack shaft, rear bridge tube, braking device, wheel hub, steady brace, steady brace seat, bracket arm and handler, described jack shaft is positioned at rear bridge tube, described braking device comprises shoe sole, camshaft, brake arm and two brake shoes, described brake shoe is positioned on shoe sole, described brake shoe is provided with brake facing, described camshaft is between two brake shoes, and camshaft and shoe sole are rotationally connected, camshaft and brake arm removably connect, described shoe sole is positioned at back axle tube end, described steady brace seat is positioned on rear bridge tube, described steady brace and steady brace seat hinged, described bracket arm and handler hinged, described bracket arm and brake arm removably connect, it is characterized in that: described brake arm is provided with multiple connecting bore.
2. self-propelled vehicle and electric motor car mechanical brake type back axle as claimed in claim 1, is characterized in that: the connecting bore on described brake arm is longitudinally evenly distributed.
3. self-propelled vehicle and electric motor car mechanical brake type back axle as claimed in claim 2, is characterized in that: the connection hole on described brake arm is provided with setscrew nut.
4. self-propelled vehicle and electric motor car mechanical brake type back axle as claimed in claim 1, it is characterized in that: also comprise anti-rotational pull bar, anti-rotational drag link bearing and vehicle-frame seat, one end and the anti-rotational drag link bearing of described anti-rotational pull bar are hinged, and the other end and the vehicle-frame seat of anti-rotational pull bar are hinged; Described anti-rotational drag link bearing is positioned on shoe sole.
5. self-propelled vehicle and electric motor car mechanical brake type back axle as claimed in claim 4, is characterized in that: described anti-rotational drag link bearing is positioned on shoe sole and is positioned on rear bridge tube instead of anti-rotational drag link bearing.
6. self-propelled vehicle and electric motor car mechanical brake type back axle as described in claim 4 or 5, it is characterized in that: the hinged employing hinge of described anti-rotational pull bar and vehicle-frame seat, bracket arm and the hinged of handler also adopt hinge, and the axial line conllinear of the axial line of anti-rotational pull bar and the hinged bearing pin of vehicle-frame seat and bracket arm and the hinged bearing pin of handler.
CN201520046257.0U 2015-01-23 2015-01-23 Self-propelled vehicle and electric motor car mechanical brake type back axle Withdrawn - After Issue CN204452423U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520046257.0U CN204452423U (en) 2015-01-23 2015-01-23 Self-propelled vehicle and electric motor car mechanical brake type back axle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520046257.0U CN204452423U (en) 2015-01-23 2015-01-23 Self-propelled vehicle and electric motor car mechanical brake type back axle

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CN201520046257.0U Withdrawn - After Issue CN204452423U (en) 2015-01-23 2015-01-23 Self-propelled vehicle and electric motor car mechanical brake type back axle

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104554218A (en) * 2015-01-23 2015-04-29 李邦华 Motor vehicle and mechanical braking rear axle of electric vehicle
CN105179532A (en) * 2015-09-30 2015-12-23 重庆帮桦机械制造有限公司 Tricycle brake disc assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104554218A (en) * 2015-01-23 2015-04-29 李邦华 Motor vehicle and mechanical braking rear axle of electric vehicle
CN105179532A (en) * 2015-09-30 2015-12-23 重庆帮桦机械制造有限公司 Tricycle brake disc assembly

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AV01 Patent right actively abandoned

Granted publication date: 20150708

Effective date of abandoning: 20170822

AV01 Patent right actively abandoned