Brake pedal for engineering vehicle

Abstract

The present application discloses a brake pedal for an engineering vehicle, comprising a mounting shell, a first rotating unit, a second rotating unit, a first braking unit, a second braking unit, and a third braking unit. The first braking unit can drive the first rotating unit to rotate, the second braking unit can drive the second rotating unit to rotate, and the third braking unit can drive the first rotating unit and the second rotating unit to rotate synchronously. The brake pedal of the present application has a third braking unit, and the third braking unit is protected by a protective shell. Thus, in an emergency, when there are foreign objects on the back of the pedals of the first and second braking units, making it impossible to brake through the pedals, the handle can be used to drive the rotating rod to achieve simultaneous braking of the tracks on both sides. In the absence of braking, the detection structure can detect whether the first braking unit, the second braking unit, and the third braking unit can brake normally.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering vehicles, and more particularly, to a brake pedal for an engineering vehicle. Background Art

[0002] In order to adapt to complex construction scenarios, many engineering vehicles often use tracked vehicles with two tracks. Tracked vehicles usually have two brake pedals, which are used to brake the left and right tracks respectively.

[0003] Existing construction vehicles have a risk of foreign matter being trapped on the back of the pedals. If this occurs, the pedal cannot be pressed properly, preventing the vehicle from braking in time. This poses a safety hazard, particularly in complex or harsh construction environments, significantly increasing the risk of vehicle loss of control and accidents. Furthermore, if the pedal cannot be pressed properly, it is difficult for the driver to detect it in time without braking. Therefore, foreign matter cannot be effectively removed from the pedal, resulting in brake failure. Summary of the Invention

[0004] The present invention aims to overcome the defects of the prior art and provides a brake pedal for an engineering vehicle.

[0005] In order to achieve the above-mentioned objectives, the present invention provides the following technical solutions: a brake pedal, comprising a mounting shell, a first rotating unit, a second rotating unit, a first braking unit, a second braking unit and a third braking unit, the mounting shell comprising a shell and a base plate connected to the shell, a connecting rod fixedly connected to the base plate, the connecting rod fixedly connected to a fixed plate, the first rotating unit and the second rotating unit both comprising a rotating cylinder, a first connecting block connected to the rotating cylinder and a driving block connected to the rotating cylinder, the first connecting blocks of the first rotating unit and the second rotating unit are respectively connected to the two ends of the fixed plate through a first tension spring; the first braking unit can drive the first rotating unit to rotate, the second braking unit can drive the second rotating unit to rotate, and the third braking unit can drive the first rotating unit and the second rotating unit to rotate synchronously.

[0006] Furthermore, the driving block of the first rotating unit is connected to a first connecting rod; and the driving block of the second rotating unit is connected to a second connecting rod.

[0007] The driving block then drives the following components through the connecting rod, thereby achieving the braking of the crawler track.

[0008] Furthermore, the first brake unit and the second brake unit each include a pedal, a connecting plate connected to the pedal, a rotating tube connected to the connecting plate, and a strip protrusion connected to the rotating tube; the inner circumference of the rotating cylinder has an arc groove that cooperates with the strip protrusion; the third brake unit includes a rotating shaft, a rotating rod connected to the rotating shaft, two rotating blocks connected to the rotating shaft, two limiting plates connected to the rotating shaft, a cylindrical block fixedly connected to the rotating shaft, and a driving rod connected to the cylindrical block through the second connecting block, the driving rod being able to simultaneously abut the first connecting block of the first rotating unit and the second rotating unit A connecting block drives the first rotating unit and the second rotating unit to rotate synchronously, a second tension spring is connected between the rotating block and the base plate, both sides of the shell have through holes passed by the rotating shaft, the shell, the connecting plate of the first braking unit and the connecting plate of the second braking unit are all located between the two limit plates; side protrusions are fixed on both sides of the shell, the two side protrusions and the two connecting plates correspond one to one, and a third tension spring is connected between the corresponding side protrusions and the connecting plates; two strip-shaped limit blocks that can respectively abut the driving block of the first rotating unit and the driving block of the second rotating unit are fixedly installed in the shell.

[0009] Furthermore, when the first braking unit, the second braking unit and the third braking unit are not braking, the driving block of the first rotating unit and the driving block of the second rotating unit respectively abut against the two bar-shaped limiting blocks.

[0010] Furthermore, the connecting plate has a semicircular ring for connecting with the third tension spring.

[0011] Furthermore, the rotating tube of the first brake unit passes through the rotating cylinder of the first rotating unit, the rotating tube of the second brake unit passes through the rotating cylinder of the second rotating unit, and the rotating shaft passes through the rotating tube of the first brake unit and the rotating tube of the second brake unit.

[0012] Furthermore, the strip-shaped protrusion at the first braking unit is located in the arc-shaped groove of the first rotating unit; and the strip-shaped protrusion at the second braking unit is located in the arc-shaped groove of the second rotating unit.

[0013] Furthermore, arc-shaped limit blocks are fixed at both ends of the cylindrical block, wherein the end of one arc-shaped limit block faces the end of the rotating cylinder of the first rotating unit, and the end of the other arc-shaped limit block faces the end of the rotating cylinder of the second rotating unit.

[0014] Thus, the two arc-shaped limiting blocks limit the installation of the first rotating unit and the second rotating unit in the axial direction of the rotating shaft.

[0015] Furthermore, the shell includes two side plates, the two through holes are respectively located at the two side plates, and the two side plates are respectively a first side plate and a second side plate.

[0016] Furthermore, the radius of the perforation is equal to the outer diameter of the rotating tube.

[0017] Furthermore, the inner diameter of the rotating tube is equal to the radius of the rotating shaft, and the outer diameter of the rotating tube is equal to the inner diameter of the rotating cylinder.

[0018] Thus, a good fit can be formed between the perforation, the rotating shaft, the rotating tube and the rotating cylinder.

[0019] Furthermore, the distance between one end of the rotating cylinder of the first rotating unit and the first side plate is less than 2 mm, and the distance between the other end and the arc-shaped limit block close to the first side plate is less than 2 mm; the distance between one end of the rotating cylinder of the second rotating unit and the second side plate is less than 2 mm, and the distance between the other end and the arc-shaped limit block close to the second side plate is less than 2 mm.

[0020] Furthermore, the distance between each limiting plate and the corresponding connecting plate is less than 2 mm.

[0021] Therefore, the limiting plate can conveniently limit the installation of the rotating tube of the first brake unit and the rotating tube of the second brake unit from the axis of the rotating shaft.

[0022] Furthermore, a protective shell with an open top is fixed to the base plate, one end of the rotating rod is located in the protective shell, and the top of the protective shell has bristles; the connecting plate of the first braking unit and the connecting plate of the second braking unit both have a first detection through hole, and both sides of the protective shell have a second detection through hole; the base plate is fixedly connected to a first mounting plate and a second mounting plate, the first mounting plate has a first mounting groove, a laser transmitter is installed in the first mounting groove, the second mounting plate is installed with a second mounting groove, and a light receiver is installed in the second mounting groove; when the first braking unit, the second braking unit and the third braking unit are not braking, the light from the laser transmitter can pass through the two second detection through holes and the two first detection through holes and be received by the light receiver.

[0023] Furthermore, abutment blocks capable of abutting the connecting plate are fixedly connected to both sides of the shell.

[0024] Therefore, the two abutment blocks can respectively limit the two connecting plates.

[0025] Furthermore, when the first brake unit, the second brake unit and the third brake unit are not braked, the connecting plate of the first brake unit and the connecting plate of the second brake unit abut against the two abutting blocks respectively.

[0026] Furthermore, the protective shell has an abutting inclined surface capable of abutting against the rotating rod.

[0027] Therefore, when the first braking unit, the second braking unit and the third braking unit are not braking, the rotating rod abuts against the abutting inclined surface, thereby limiting the rotating rod.

[0028] Furthermore, a handle is installed at the end of the rotating rod.

[0029] Thereby, the operation of the rotating rod is facilitated.

[0030] Furthermore, the end of the pedal of the first brake unit has a groove portion, and the end of the second brake unit is connected to an extension plate extending into the groove portion.

[0031] Therefore, by stepping on the middle position, it is possible to step on the pedal of the first brake unit and the pedal of the second brake unit at the same time, thereby achieving simultaneous braking on the left and right sides.

[0032] Furthermore, the pedal is provided with a plurality of anti-slip protrusions.

[0033] This prevents slipping when stepping on the pedal.

[0034] Furthermore, the engineering vehicle is a tracked vehicle.

[0035] Beneficial effects:

[0036] 1. The brake pedal of the present application has a third brake unit, and the third brake unit is protected by a protective shell. In an emergency, when there are foreign objects on the back of the pedals of the first and second brake units and braking cannot be performed through the pedals, the handle can be used to drive the rotating rod to achieve simultaneous braking of the tracks on both sides.

[0037] 2. The brake pedal of the present application has a detection structure. In the absence of braking, the detection structure can detect whether the first brake unit, the second brake unit and the third brake unit can brake normally, thereby ensuring normal braking of the engineering vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a first-person perspective diagram of the brake pedal;

[0039] Figure 2 This is a schematic diagram of the brake pedal from a second perspective;

[0040] Figure 3 This is a third-person perspective diagram of the brake pedal;

[0041] Figure 4 A schematic diagram of pedal braking using the second brake unit;

[0042] Figure 5 A schematic diagram of braking using the rotating rod of the third braking unit;

[0043] Figure 6 This is a first-person perspective diagram of the separated brake pedal components;

[0044] Figure 7 This is a second-perspective diagram of the brake pedal components.

[0045] Explanation of reference numerals: mounting housing 1; housing 1.1; base plate 1.2; connecting rod 1.3; fixing plate 1.4; side projection 1.5; abutment block 1.6; bar-shaped stopper 1.7; rotating cylinder 2.1; arc-shaped groove 2.1.1; first connecting block 2.2; driving block 2.3; first tension spring 2.4; pedal 3.1; connecting plate 3.2; first detection through hole 3.2.1; semicircular ring 3.2.2; rotating tube 3.3; Strip-shaped protrusion 3.4; extension plate 3.5; rotating shaft 4.1; rotating rod 4.2; handle 4.2.1; rotating block 4.3; limiting plate 4.4; cylindrical block 4.5; second connecting block 4.6; driving rod 4.7; second tension spring 4.8; third tension spring 4.9; arc-shaped limiting block 4.10; protective shell 5; bristles 5.1; second detection through hole 5.2; first mounting plate 6; laser emitter 6.1; second mounting plate 7. DETAILED DESCRIPTION

[0046] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0047] As shown in the figure, a brake pedal for an engineering vehicle includes a mounting shell 1, a first rotating unit, a second rotating unit, a first braking unit, a second braking unit and a third braking unit. The mounting shell 1 includes a shell 1.1 and a base plate 1.2 connected to the shell 1.1. A connecting rod 1.3 is fixedly connected to the base plate 1.2, and the connecting rod 1.3 is fixedly connected to a fixed plate 1.4. The first rotating unit and the second rotating unit both include a rotating cylinder 2.1, a first connecting block 2.2 connected to the rotating cylinder 2.1 and a driving block 2.3 connected to the rotating cylinder 2.1. The first connecting blocks of the first rotating unit and the second rotating unit are respectively connected to the two ends of the fixed plate 1.4 through a first tension spring 2.4; the first braking unit can drive the first rotating unit to rotate, the second braking unit can drive the second rotating unit to rotate, and the third braking unit can drive the first rotating unit and the second rotating unit to rotate synchronously.

[0048] The first brake unit and the second brake unit both include a pedal 3.1, a connecting plate 3.2 connected to the pedal 3.1, a rotating tube 3.3 connected to the connecting plate 3.2, and a strip-shaped protrusion 3.4 connected to the rotating tube 3.3; the inner circumference of the rotating cylinder 2.1 is provided with an arc-shaped groove 2.1.1 that cooperates with the strip-shaped protrusion 3.4; the third brake unit includes a rotating shaft 4.1, a rotating rod 4.2 connected to the rotating shaft 4.1, two rotating blocks 4.3 connected to the rotating shaft 4.1, two limiting plates 4.4 connected to the rotating shaft 4.1, a cylindrical block 4.5 fixedly connected to the rotating shaft 4.1, and a driving rod 4.7 connected to the cylindrical block 4.5 through a second connecting block 4.6, wherein the driving rod 4.7 can simultaneously abut the first connecting block of the first rotating unit and the first connecting block of the second rotating unit and To drive the first rotating unit and the second rotating unit to rotate synchronously, a second tension spring 4.8 is connected between the rotating block 4.3 and the base plate 1.2, and both sides of the shell 1.1 have through holes passed by the rotating shaft 4.1. The shell 1.1, the connecting plate of the first braking unit and the connecting plate of the second braking unit are all located between the two limit plates 4.4; side protrusions 1.5 are fixed on both sides of the shell 1.1, and the two side protrusions 1.5 correspond to the two connecting plates 3.2 one by one. A third tension spring 4.9 is connected between the corresponding side protrusions and the connecting plates, and abutment blocks 1.6 that can abut the connecting plates 3.2 are fixedly connected on both sides of the shell 1.1; two bar-shaped limit blocks 1.7 that can respectively abut the driving block of the first rotating unit and the driving block of the second rotating unit are fixedly installed in the shell 1.1.

[0049] An arc-shaped stopper 4.10 is fixed to both ends of the cylindrical block 4.5, wherein the end of one arc-shaped stopper 4.10 faces the end of the rotating cylinder 2.1 of the first rotating unit, and the end of the other arc-shaped stopper 4.10 faces the end of the rotating cylinder 2.1 of the second rotating unit. The housing 1.1 includes two side panels, and two perforations are respectively located on the two side panels, the two side panels being the first side panel and the second side panel; the radius of the perforations is equal to the outer diameter of the rotating tube 3.3. The distance between one end of the rotating cylinder 2.1 of the first rotating unit and the first side panel is less than 2 mm, and the distance between the other end and the arc-shaped stopper 4.10 close to the first side panel is less than 2 mm; the distance between one end of the rotating cylinder 2.1 of the second rotating unit and the second side panel is less than 2 mm, and the distance between the other end and the arc-shaped stopper 4.10 close to the second side panel is less than 2 mm. A protective shell 5 with an open top is fixed to the base plate 1.2. One end of the rotating rod 4.2 is located within the protective shell 5, and the top of the protective shell 5 has bristles 5.1. The connecting plates of the first and second brake units each have a first detection hole 3.2.1, and the protective shell 5 has second detection holes 5.2 on both sides. A first mounting plate 6 and a second mounting plate 7 are fixedly connected to the base plate 1.2. The first mounting plate 6 has a first mounting groove, in which a laser transmitter 6.1 is mounted. The second mounting plate 7 has a second mounting groove, in which a light receiver is mounted. When the first, second, and third brake units are not braking, light from the laser transmitter can pass through the two second detection holes 5.2 and the two first detection holes 3.2.1 and be received by the light receiver. A handle 4.2.1 is mounted at the end of the rotating rod 4.2. The pedal 3.1 of the first brake unit has a groove at the end, and the end of the second brake unit is connected to an extension plate 3.5 that extends into the groove.

[0050] Working principle: Figure 1-3 As shown, under the action of the first tension spring, the second tension spring, the third tension spring, the abutment block, the protective shell and the strip-shaped limit block, the rotating tube, the rotating cylinder, the rotating shaft and the pedal are all in a stable state. Figure 4 As shown, when the pedal of the second brake unit is stepped on, the bar-shaped protrusion on the rotating tube of the second brake unit abuts one side of the arc-shaped groove of the second rotating unit, causing the second rotating unit to rotate, overcoming the tension of the first tension spring connected to the second rotating unit. The drive block of the second rotating unit then drives the connecting rod and other components connected to it, thereby braking one track. The principle of braking the other track using the pedal of the first brake unit is similar. The presence of the third brake unit does not affect the braking operation achieved by the pedals of the first and second brake units.

[0051] In an emergency, when the pedals of the first and second brake units cannot be properly depressed, the handle drives the rotating rod to rotate, thereby driving the rotating shaft to rotate. The driving rod then abuts the two first connecting blocks, driving the two rotating cylinders to rotate synchronously, thereby achieving simultaneous braking of both tracks. Furthermore, because the rotating rod is mounted within a protective housing with bristles on the top to block foreign objects, the situation in which the rotating rod is blocked by foreign objects and cannot rotate is virtually nonexistent. Furthermore, a laser generator and a light receiver are provided to simultaneously detect whether both pedals and the third brake unit are functioning properly when the brakes are not in use. (If there is foreign object on the back of the first brake unit's pedal, or on the back of the second brake unit's pedal, or if there is foreign object obstructing the protective housing, the light receiver is likely to be unable to receive the laser generator's light signal.) The laser emitter and light receiver are connected to the engineering vehicle's control unit. If the light receiver fails to receive the laser generator's light signal when the brakes are not in use, the control unit promptly issues an alarm signal, prompting the driver to conduct an inspection.

[0052] Although the present invention has been illustrated and described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims

1. A brake pedal for an engineering vehicle, characterized in that: The cam is connected to the second rotating shaft by a first spring and a second spring, and the cam is connected to the first rotating shaft by a second spring and a second spring is connected to the first rotating shaft by a second spring. The first and second rotating units rotate synchronously, and a second tension spring is connected between the rotating block and the base plate; a third tension spring is connected between the corresponding side protrusion and the connecting plate, and abutment blocks are fixed on both sides of the shell; two bar-shaped limit blocks that can respectively abut the driving blocks of the first and second rotating units are fixedly installed in the shell; the connecting plates of the first and second braking units both have a first detection through hole, and both sides of the protective shell have a second detection through hole; the base plate is fixed with a first mounting plate with a first mounting groove and a second mounting plate with a second mounting groove, a laser transmitter is installed in the first mounting groove, and a light receiver is installed in the second mounting groove; when the first, second and third braking units are not braked, the light of the laser transmitter can pass through the two second detection through holes and the two first detection through holes and be received by the light receiver; a handle is installed at the end of the rotating rod; the end of the pedal of the first braking unit has a groove portion, and the end of the second braking unit is connected to an extension plate extending into the groove portion.

2. The brake pedal for an engineering vehicle according to claim 1, characterized in that: Arc-shaped limit blocks are fixed at both ends of the cylindrical block, wherein the end of one arc-shaped limit block faces the end of the rotating cylinder of the first rotating unit, and the end of the other arc-shaped limit block faces the end of the rotating cylinder of the second rotating unit.

3. The brake pedal for an engineering vehicle according to claim 1, wherein: The shell includes two side plates, two through holes are respectively located at the two side plates, and the two side plates are respectively a first side plate and a second side plate; the radius of the through hole is equal to the outer diameter of the rotating tube.

4. The brake pedal for an engineering vehicle according to claim 3, wherein: The distance between one end of the rotating cylinder of the first rotating unit and the first side plate is less than 2 mm, and the distance between the other end and the arc-shaped limit block close to the first side plate is less than 2 mm; The distance between one end of the rotating cylinder of the second rotating unit and the second side plate is less than 2 mm, and the distance between the other end and the arc-shaped limiting block close to the second side plate is less than 2 mm.

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