CN201110240Y

CN201110240Y - Built-in type security protection and automatically pressure-reducing device for starting handle of single cylinder diesel engine

Info

Publication number: CN201110240Y
Application number: CNU200720125096XU
Authority: CN
Inventors: 陈万荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-31
Filing date: 2007-08-31
Publication date: 2008-09-03
Anticipated expiration: 2017-08-31

Abstract

The utility model relates to a single cylinder diesel engine handle-starting internal type safety protection and automatic decompressing device, a starting pin is installed on the outer end of a spline shaft, a starting board and a protector gear are sleeved on the inner end, the protector gear and a starting shaft gear are engaged, the starting board can be clutched with the protector gear, the inner end of a shifting fork shaft is connected with the handle portion of a shifting fork, a starting spring is sleeved on the shifting fork shaft, a fork portion on the upper end of the shifting fork is located in a shifting fork groove on the starting board, the tail end of a shifting fork bending part is arranged in a supporting block of a controller, a controller handle is installed on the external end of a controller shaft, the inner end of the controller shaft is fixedly connected with a rotary table of the controller, the rotary table of the controller is connected with a relief cock of a pressure relief valve through a pull wire, and an offsetting spring is arranged between the rotary table of the controller and a box boundary cover of an engine. The decompressing device of the utility model does not produce reaction force without reversal in the process of hand starting, potential safety hazard which is existed in the hand starting of single cylinder diesel engine handle-starting is fundamentally solved, and the decompressing device has the characteristics in that the performance is reliable, the operation is rapid, the versatility is strong and the like.

Description

Built-in safety protection of single cylinder diesel engine handle start-up and automatic pressure-reducing device

Technical field

The utility model belongs to the single cylinder diesel technical field, specifically, relates to built-in safety protection of a kind of single cylinder diesel engine handle start-up and automatic pressure-reducing device.

Background technique

At present, the start mode of single cylinder diesel engine is to adopt crank handle to start manually.Be that reduction valve is installed in the engine housing, the relief cock of reduction valve stretches out engine housing; The starting end of engine start axle stretches out from engine housing limit lid, upwards wears from the footpath in the end of its starting end to start pin.During starting, operating crank insert is started on the pin, pull the relief cock handle of reduction valve, make reduction valve open and buttress, use hand moving operating crank again, make it to drive the rotation of engine start axle by starting pin with hand; When the rotating speed of engine start axle during greater than the operating crank rotating speed, operating crank is thrown off from starting pin, pulls the relief cock handle of reduction valve at this moment immediately with hand, and reduction valve cuts out, and motor could begin proper functioning.Existing handle starter device mainly has the following disadvantages:

1, in the process of starting, can produce bigger reaction force, the staff operates incorrect in addition, injure because of the operating crank counter-rotating personnel that cause easily, consequent security incident, human casualty accident happen occasionally, and do not meet the related request of GB/T2006.1-2006---there is not automatic disengaging gear.

2, because of when starting operating crank directly be connected with the engine start axle, when counter-rotating took place the engine start axle, operating crank can not in time be thrown off, and caused operating crank to rotate synchronously to hurt sb.'s feelings easilier.

3, the starting end of engine start axle is directly exposed outside, accident such as not only cause windings easily, hurt sb.'s feelings, nor meet the mandatory new regulation of country about " do not allow solid of rotation to expose, safety cover must be arranged ".

4, the open and close of reduction valve are realized with the manual control relief cock by operator, do not meet the related request of GB/T20064.1-2006---promptly adopt the single cylinder diesel of handle starter device must be provided with safety installations, this safety installations starting the time need not with hand steered firmly.

5, when throwing off, pin must in time close reduction valve from starting at operating crank, motor could start successfully, because it is relatively poor from the synchronism that starts the pin disengagement manually to close reduction valve and operating crank, needing so often to cause repeatable operation that motor is successfully started, not only bother but also require great effort, the starting performance of motor is unreliable.

The model utility content

Technical problem to be solved in the utility model is to provide a kind of starting convenience, reliable performance, and does not produce the built-in safety protection of single cylinder diesel engine handle start-up and the automatic pressure-reducing device of counter-rotating.

The technical solution of the utility model is as follows: built-in safety protection of a kind of single cylinder diesel engine handle start-up and automatic pressure-reducing device, comprise engine housing limit lid, the engine start axle, start pin and reduction valve, its key is: the starting end at described engine start axle is set with the startup shaftgear, has spacing between the inwall of the end face of engine start axle starting end and engine housing limit lid, cover on the engine housing limit and to be provided with on two, following parallel axle sleeve, wear splined shaft in the described Upper shaft sleeve, the outer end of this splined shaft is installed and is started pin, inner suit protector gear, and the protector gear is meshed with described startup shaftgear, suit starter panel on the splined shaft between the lid of protector gear and engine housing limit, the inner side surface of this starter panel be provided with can with the protector gear starting dog of clutch mutually; In described Lower shaft sleeve, wear declutch shift shaft, the inner of this declutch shift shaft is connected with the shank of shift fork, suit primer spring on the declutch shift shaft between shift fork and the engine housing limit lid, the fork of described shift fork upper end is arranged in the fork slot of offering on the described starter panel circumferential surface, the lower end of shift fork shank is towards the direction distortion bending of engine housing limit lid, at the tail end of bending part the controller support block is set; Be provided with the controller rotating disk on the next door of described shift fork, this controller rotating disk is fixedlyed connected with the inner of controller shaft, engine housing limit lid and installation and control device handle are passed in the outer end of controller shaft, described controller rotating disk is connected with the relief cock of described reduction valve by backguy, this controller rotating disk and described controller support block are spacing mutually, and are provided with Returnning spring between controller rotating disk and engine housing limit lid.

Adopt above technological scheme, before hand starting, starting dog and protector on the starter panel are out of gear, and primer spring is in compressive state, and the controller support block is in the axial direction by the controller rotary disk limitation; With hand rotational controller handle, make it drive controller dial rotation several angle by controller shaft, the controller rotating disk unclamps the restriction to the controller support block, under the elastic force effect of primer spring, shift fork moves to the direction of protector gear, starter panel is synchronized with the movement under the effect of shift fork, and starting dog is engaged with the protector gear; Returnning spring on the controller shaft produces revolution torsion at this moment, and the protector rotating disk is upwards spacing by the controller support block in week.Meanwhile, the controller rotating disk by the relief cock of backguy pulling reduction valve, opens reduction valve in rotation process.

Operating crank is inserted in the startup pin of splined shaft outer end, with hand moving operating crank, operating crank drives the splined shaft rotation by starting pin, the starter panel that connects with the splined shaft spline rotates with splined shaft, starter panel drives the protector gear by starting dog and rotates synchronously, and the protector gear drives the rotation of engine start axle by starting shaftgear again, and this moment, splined shaft was a driving shaft, the engine start axle is a driven shaft, and the rotating speed of splined shaft is greater than the rotating speed of engine start axle; When the rotating speed of engine start axle during greater than hand rotating speed; the driving and driven relation of splined shaft and engine start axle is switched; starting dog on the starter panel automatically and protector be out of gear; starter panel on splined shaft dorsad the protector gear move; and drive shift fork synchronous shift; the revolution that the controller support block is unclamped the controller rotating disk limits; under the elastic force effect of Returnning spring; the revolution of controller rotating disk resets; and drive the relief cock of reduction valve by backguy; moment is closed reduction valve, makes motor begin proper functioning.

In order to guarantee that splined shaft only rotates, prevent splined shaft generation axial motion, on the splined shaft of described Upper shaft sleeve both sides, be set with jump ring, the end face of each jump ring and Upper shaft sleeve corresponding end is fitted.

For simplified structure, be convenient to the protector gear and install, be formed with position-arresting disk in the inner of described splined shaft, the interior edge face of described protector gear is spacing by this position-arresting disk, and the exterior edge face of protector gear is spacing by the jump ring that is sleeved on the splined shaft.

Offer the groove suitable with jump ring on the interior edge face of described starter panel, the degree of depth of this groove equates substantially with the thickness of jump ring.When starter panel and protector gear engagement, jump ring just in time embeds in the groove of starter panel interior edge face, to reach better joint effect.

For convenience of starter panel and protector gear engagement, described starting dog is made of 2-8 the starting tooth of evenly arranging on circumference, offers the positioning hole that adapts with this starting tooth at the protector gear on the end face of starter panel.

The starting tooth of described formation starting dog is arc, passes through the cambered surface transition between the peak of this starting tooth and the minimum point.Starting dog adopts above structure, and engage between starting dog and the protector gear, throw off all and be easy to, and the stability of transmission of power can guarantee hand starting the time.

Described controller level is sleeved on the outer end of controller shaft, and by nut check, controller level and controller shaft adopt and removably connect, and dismounting is all very convenient.

Described Returnning spring is a torsion spring, and an end of this torsion spring is fixed on the engine housing limit and covers, and the other end is fixedlyed connected with the controller rotating disk.Torsion spring matches with the controller rotating disk, can reach open and close reduction valve more accurately, makes the more reliable performance of starting.

For further simplified structure, easy-to-operat, described controller rotating disk is semicircle tabular structure, end at semicircle has the confined planes that matches with the controller support block, the outer rim of the semicircle the other end is provided with journal stirrup, this journal stirrup by via hole and backguy fastens and connects, and the other end of backguy is fixed on the relief cock of reduction valve by locker.

The beneficial effects of the utility model are:

1, directly is not connected owing to operating crank with the engine start axle; starter panel can be thrown off the protector gear automatically in the process of crank handle starting; do not have the reaction force generation like this and do not have counter-rotating, fundamentally solved the potential safety hazard that the single cylinder diesel hand starting exists.

2, in the process of crank handle starting, only need a transcoder controller handle gently, just can make starter panel and protector gear engagement good, reach starting state, significantly reduced manually operated difficulty.

3, the starting end with the engine start axle is arranged in the engine housing, has both prevented the exposed winding that causes of engine start axle, has hurted sb.'s feelings, and has satisfied the mandatory new regulation of country about " do not allow solid of rotation exposed, safety cover must be arranged " again.

4, reduction valve has been realized automatic control, has successfully solved the problem that exists with handling for a long time, and meets the Compulsory Feature of GB/T 20064.1-2006 international standard.

5, owing to adopted the novel controller rotating disk and the coupling of Returnning spring, reached open and close reduction valve more accurately, made the more reliable performance of starting.

6, protector is directly installed on the engine housing limit and covers, need not make the shell of protector separately, make structure more perfect, satisfied national energy-saving and cost-reducing fundamental policy.

7, assembly technology is simple and practical, and highly versatile all is suitable for various types of single cylinder diesels.

8, when satisfying performance, characteristics, make that complete machine is simpler, more reasonable structure, operation is faster, outward appearance is more perfect.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the partial schematic diagram of engine housing limit lid in the utility model.

Fig. 3 is that the utility model middle controller support block is to the circumferential spacing schematic representation of protector rotating disk.

Fig. 4 be in the utility model the protector rotating disk to the schematic representation of controller support block axial limiting.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples:

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, reduction valve 4 is installed in the engine housing, and the relief cock 4a of reduction valve 4 stretches out outside the engine housing 24; Engine start axle 2 also is positioned at engine housing, is set with at the starting end of engine start axle 2 to start shaftgear 5, and the end face of engine start axle 2 starting ends and engine housing limit are covered between 1 the inwall has spacing.Engine housing limit lid 1 is provided with two upper and lower

parallel axle sleeves

6,7, and upper and

lower axle sleeve

6,7 and engine housing limit lid 1 are structure as a whole, and offer the via hole 1a that passes through for controller shaft 16 on the next door of Lower shaft sleeve 7.

As shown in Figure 1, wear splined shaft 8 in Upper shaft sleeve 6, splined shaft 8 can rotate relative to Upper shaft sleeve 6.Be set with jump ring 20 on the splined shaft 8 of Upper shaft sleeve 6 both sides, each jump ring 20 is fitted with the end face of Upper shaft sleeve 6 corresponding end, to guarantee that 8 of splined shafts rotate, prevents that splined shaft 8 from axial motion taking place.Splined shaft 8 is positioned at the polished end in Upper shaft sleeve 6 outsides startup pin 3 is installed, and the two ends that start pin 3 exceed the circumferential surface of splined shaft 8; Splined shaft 8 is positioned at the polished end kink protector gear 10 of Upper shaft sleeve 6 inboards, and protector gear 10 is meshed with described startup shaftgear 5.End in splined shaft 8 the inners is formed with position-arresting disk 21, and the interior edge face of described protector gear 10 is spacing by this position-arresting disk 21, and the exterior edge face of protector gear 10 is spacing by the jump ring 22 that is sleeved on the splined shaft 8.Suit starter panel 11 on the spline segment of splined shaft 8 between protector gear 10 and the engine housing limit lid 1, starter panel 11 can rotate with splined shaft 8, and starter panel 11 can move axially on splined shaft 8.Offer the groove suitable with jump ring 22 on the interior edge face of starter panel 11, the degree of depth of this groove equates substantially with the thickness of jump ring 22.Also be provided with the starting dog 11a that can engage on the inner side surface of described starter panel 11 with protector gear 10; starting dog 11a is made of 2-8 the starting tooth of evenly arranging on circumference, offers the positioning hole that adapts with this starting tooth at protector gear 10 on the end face of starter panel 11.The starting tooth of described formation starting dog 11a is arc; pass through the cambered surface transition between the peak of this starting tooth and the minimum point; engage between starting dog 11a and the protector gear 10 like this, throw off all and be easy to, and the stability of transmission of power can guarantee hand starting the time.In the present embodiment, the number of starting tooth is 3.

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, in Lower shaft sleeve 7, wear declutch shift shaft 12, declutch shift shaft 12 and Lower shaft sleeve 7 Spielpassung, the exterior edge face of declutch shift shaft 12 is concordant with the exterior edge face of Lower shaft sleeve 7, fixedly connected with the shank of shift fork 13 in the inner of declutch shift shaft 12, suit primer spring 14 on the declutch shift shaft 12 between shift fork 13 and the engine housing limit lid 1.The fork of described shift fork 13 upper ends is arranged in the fork slot 11b that offers on described starter panel 11 circumferential surfacies, and the lower end of shift fork 13 shanks is towards the direction distortion bending of engine housing limit lid 1, is formed with controller support block 15 at the tail end of bending part.In the via hole 1a on Lower shaft sleeve 7 next doors, wear controller shaft 16, be provided with controller rotating disk 18 on the next door of described shift fork 13, the plate face of this controller rotating disk 18 is fixedlyed connected with the inner of controller shaft 16, engine housing limit lid 1 is passed in the outer end of controller shaft 16, and at the outer end of controller shaft 16 suit controller level 17, by nut 23 lockings.Controller rotating disk 18 is semicircle tabular structure, end at semicircle has the confined planes 18a that matches with controller support block 15, when the starting dog 11a on the starter panel 11 and protector gear 10 were in disengaged condition, controller support block 15 was in the axial direction by the spacing (see figure 4) of plate face of controller rotating disk 18; When the starting dog 11a on the starter panel 11 and protector gear 10 are in jointing state, the confined planes 18a on the controller rotating disk 18 week upwards by controller support block 15 spacing (see figure 3)s.The outer rim of the described semicircle the other end is formed with journal stirrup 18b, and this journal stirrup 18b by via hole and backguy 9 fastens and connects, and the other end of backguy 9 is fixed on the relief cock 4a of reduction valve 4 by locker.Be set with Returnning spring 19 on the controller shaft 16 between controller rotating disk 18 and the engine housing limit lid 1, this Returnning spring 19 is a torsion spring, and an end of this torsion spring is fixed on the engine housing limit lid 1, and the other end is fixedlyed connected with controller rotating disk 18.

The utility model is work like this:

Before hand starting, the starting dog 11a on the starter panel 11 and protector gear 10 thrown off, and primer spring 14 is in compressive state, and controller support block 15 is in the axial direction by the spacing (see figure 4) of plate face of controller rotating disk 18; With hand rotational controller handle 17, making it drive controller rotating disk 18 by controller shaft 16 turns an angle, the plate face of controller rotating disk 18 unclamps the restriction to controller support block 15, under the elastic force effect of primer spring 14, shift fork 13 moves together with the direction of declutch shift shaft 12 to protector gear 10, starter panel 11 is synchronized with the movement under the effect of shift fork 13, and starting dog 11a is engaged with protector gear 10; Returnning spring on the controller shaft 16 19 produces the revolution torsion at this moment, and the confined planes 18a of protector rotating disk 18 made progress by controller support block 15 spacing (see figure 3)s in week.Meanwhile, controller rotating disk 18 by the relief cock 4a of backguy 9 pulling reduction valve 4, opens reduction valve 4 in rotation process.

Operating crank is inserted in the startup pin 3 of splined shaft 8 outer ends, with hand moving operating crank, operating crank drives splined shaft 8 rotations by starting pin 3, the starter panel that connects with splined shaft 8 splines 11 rotates with splined shaft, starter panel 11 drives protector gear 10 rotation synchronously by starting dog 11a, protector gear 10 drives 2 rotations of engine start axle by starting shaftgear 5 again, this moment, splined shaft 8 was a driving shaft, engine start axle 2 is a driven shaft, and the rotating speed of splined shaft 8 is greater than the rotating speed of engine start axle 2; When the rotating speed of engine start axle 2 during greater than hand rotating speed; the master of splined shaft 8 and engine start axle 2; driven relation is switched; automatic and protector gear 10 disengagements of starting dog 11a on the starter panel 11; starter panel 11 on splined shaft 8 dorsad protector gear 10 move; and drive shift fork 13 and declutch shift shaft 12 synchronous shift; the revolution that controller support block 15 is unclamped controller rotating disk 18 limits; under the elastic force effect of Returnning spring 19; 18 revolutions of controller rotating disk reset; and drive the relief cock 4a of reduction valve 4 by backguy 9; moment is closed reduction valve, makes motor begin proper functioning.

Only as further specifying of the present utility model, protection domain of the present utility model is not subjected to embodiment's restriction to above embodiment.

Claims

1, built-in safety protection of a kind of single cylinder diesel engine handle start-up and automatic pressure-reducing device, comprise engine housing limit lid (1), engine start axle (2), start pin (3) and reduction valve (4), it is characterized in that: the starting end at described engine start axle (2) is set with startup shaftgear (5), has spacing between the inwall of the end face of engine start axle (2) starting end and engine housing limit lid (1), engine housing limit lid (1) is provided with on two, following parallel axle sleeve (6,7), wear splined shaft (8) in the described Upper shaft sleeve (6), the outer end of this splined shaft (8) is installed and is started pin (3), inner suit protector gear (10), and protector gear (10) is meshed with described startup shaftgear (5), splined shaft (8) between protector gear (10) and engine housing limit lid (1) is gone up suit starter panel (11), the inner side surface of this starter panel (11) be provided with can with protector gear (10) starting dog of clutch (11a) mutually; In described Lower shaft sleeve (7), wear declutch shift shaft (12), the inner of this declutch shift shaft (12) is connected with the shank of shift fork (13), declutch shift shaft (12) between shift fork (13) and engine housing limit lid (1) is gone up suit primer spring (14), the fork of described shift fork (13) upper end is arranged in the fork slot of offering on described starter panel (11) circumferential surface (11b), the lower end of shift fork (13) shank is towards the direction distortion bending of engine housing limit lid (1), at the tail end of bending part controller support block (15) is set; Be provided with controller rotating disk (18) on the next door of described shift fork (13), this controller rotating disk (18) is fixedlyed connected with the inner of controller shaft (16), engine housing limit lid (1) and installation and control device handle (17) are passed in the outer end of controller shaft (16), described controller rotating disk (18) is connected with the relief cock (4a) of described reduction valve (4) by backguy (9), this controller rotating disk (18) is spacing mutually with described controller support block (15), and is provided with Returnning spring (19) between controller rotating disk (18) and engine housing limit lid (1).

2, built-in safety protection of single cylinder diesel engine handle start-up according to claim 1 and automatic pressure-reducing device; it is characterized in that: be set with jump ring (20) on the splined shaft (8) of described Upper shaft sleeve (6) both sides, each jump ring (20) is fitted with the end face of Upper shaft sleeve (6) corresponding end.

3, built-in safety protection of single cylinder diesel engine handle start-up according to claim 1 and automatic pressure-reducing device; it is characterized in that: be formed with position-arresting disk (21) in the inner of described splined shaft (8); the interior edge face of described protector gear (10) is spacing by this position-arresting disk (21), and the exterior edge face of protector gear (10) is spacing by the jump ring (22) that is sleeved on the splined shaft (8).

4, built-in safety protection of single cylinder diesel engine handle start-up according to claim 3 and automatic pressure-reducing device; it is characterized in that: offer on the interior edge face of described starter panel (11) and the suitable groove of jump ring (22), the degree of depth of this groove equates substantially with the thickness of jump ring (22).

5, built-in safety protection of single cylinder diesel engine handle start-up according to claim 4 and automatic pressure-reducing device; it is characterized in that: described starting dog (11a) is made of 2-8 the starting tooth of evenly arranging on circumference, offers the positioning hole that adapts with this starting tooth at protector gear (10) on the end face of starter panel (11).

6, built-in safety protection of single cylinder diesel engine handle start-up and automatic pressure-reducing device according to claim 1 or 5; it is characterized in that: the starting tooth of described formation starting dog (11a) is arc, passes through the cambered surface transition between the peak of this starting tooth and the minimum point.

7, built-in safety protection of single cylinder diesel engine handle start-up according to claim 1 and automatic pressure-reducing device is characterized in that: described controller level (17) is sleeved on the outer end of controller shaft (16), is locked by nut (23).

8, built-in safety protection of single cylinder diesel engine handle start-up according to claim 1 and automatic pressure-reducing device; it is characterized in that: described Returnning spring (19) is a torsion spring; one end of this torsion spring is fixed on the engine housing limit lid (1), and the other end is fixedlyed connected with controller rotating disk (18).

9, built-in safety protection of single cylinder diesel engine handle start-up according to claim 1 and automatic pressure-reducing device; it is characterized in that: described controller rotating disk (18) is semicircle tabular structure; end at semicircle has the confined planes (18a) that matches with controller support block (15); the outer rim of the semicircle the other end is provided with journal stirrup (18b); this journal stirrup (18b) by via hole and backguy (9) fastens and connects, and the other end of backguy (9) is fixed on the relief cock (4a) of reduction valve (4) by locker.