CN208731087U - A kind of track takeup and caterpillar machinery - Google Patents

Abstract

The utility model relates to crawler belt machinery field, a kind of track takeup and caterpillar machinery are disclosed, wherein track takeup includes: strainer and oil cylinder；The strainer includes piston rod, piston, cylinder and elastic element；One end of the piston rod is connected with the piston and is arranged in the cylinder, and the cylinder is divided into rod chamber room and rodless cavity room；The piston rod stretches out outside the cylinder far from one end of the piston to be connected with tensioning wheel；The elastic element is arranged in the rodless cavity room；The oil cylinder is equipped with pouring orifice, and the pouring orifice is communicated with the rodless cavity room.Track takeup provided by the utility model pushes piston rod to travel forward the passive tension for driving tensioning wheel to realize to crawler belt by the pretightning force of elastic element；And in conjunction with hydraulic oil to the thrust of piston rod, so that tensioning wheel be driven to realize the active adjustment effect to crawler belt tighting degree.

Description

A kind of track takeup and caterpillar machinery

Technical field

The utility model relates to crawler belt machinery fields, more particularly to a kind of track takeup and caterpillar machinery.

Background technique

It is especially rough in order to overcome severe open work environment and changeable road conditions in engineering machinery Road and the effect place on rubble ground etc., engineering machinery generally use caterpillar walking mechanism, such as crawler crane, Crawler-mounted excavator and crawler dozer etc., and caterpillar walking mechanism is usually provided with the hydraulic track of fluid pressure type Tight device.Hydraulic track tensioner device is the important component of caterpillar walking mechanism, it is desirable that it is more to can adapt to complexity The road conditions of change and the driving status of engineering machinery, performance quality have very big shadow to the driving performance of caterpillar engineering machinery It rings.

Currently, track takeup is there are many form, existing crawler tensioning equipment is mainly by two tensioning hydro-cylinders and more A valve composition, wherein the two tensioning hydro-cylinders are interconnected by pipeline, and are connect by other pipeline with valve, Locking oil cylinder is fixed in the rack of crawler type walking mechanism, and, the guide wheel of crawler type walking mechanism is supported on tensioning hydro-cylinder On piston rod, it is characterized in that: it is parallel to tensioning hydro-cylinder and connects a soft elastic element (i.e. accumulator), so, in crawler tensioning When equipment starts load, lesser pressure increase is only generated in tensioning hydro-cylinder.

Since some engineering machinery have certain requirement in transhipment or scheduling process to the bounded qualification of crawler belt, that is, exist There is certain requirement to the longitudinal cross-section height of crawler belt when transhipment, but requires the performance of crawler belt again when in use and cause crawler belt whole Body size cannot it is too small in the case where；This engineering machinery in transhipment or scheduling process, crawler belt be easier occur pendency or It is excessively tight, it is therefore desirable to the tightness of crawler belt is adjusted according to the actual situation.

Utility model content

(1) technical problems to be solved

The purpose of the utility model is to provide a kind of track takeups, it is intended at least the solution prior art or the relevant technologies Present in one of technical problem.

Another purpose of the utility model is to provide a kind of caterpillar machinery, it is intended at least the solution prior art or correlation One of technical problem present in technology.

(2) technical solution

In order to solve the above-mentioned technical problem, the utility model provides a kind of track takeup, comprising: strainer and oil Cylinder；The strainer includes piston rod, piston, cylinder and elastic element；One end of the piston rod is connected with the piston And be arranged in the cylinder, the cylinder is divided into rod chamber room and rodless cavity room；The piston rod is far from the piston One end stretch out that the cylinder is outer to be connected with tensioning wheel；The elastic element is arranged in the rodless cavity room；On the oil cylinder Equipped with pouring orifice, the pouring orifice is communicated with the rodless cavity room.

Wherein, the track takeup, further includes: straight-bar；The end that the piston rod is connected with the piston to Sunken inside forms the first cavity；The piston has through-hole, so that the rodless cavity room is communicated with first cavity；It is described straight Bar is inserted into the elastic element, and one end of the elastic element is connected with the rodless cavity room, and the other end passes through described logical Hole is connected with first cavity；One end of the straight-bar is connected with the rodless cavity room, and the other end passes through the through-hole and institute The first cavity is stated to be connected.

Wherein, the track takeup, further includes: crankshaft；The piston rod one end and institute far from the piston The middle part for stating crankshaft is connected, and the tensioning wheel is connected with the end of the crankshaft.

Wherein, the vertical sectional shape of the oil cylinder is U-shaped, and the cylinder protrudes into the sunk area of the oil cylinder, and institute Rodless cavity room is stated to be connected with the bottom of the sunk area.

Wherein, first cavity is arranged in the piston rod along the axial direction of the piston rod, the through-hole edge The axial direction of the piston is arranged in the piston.

Wherein, one end that the straight-bar is connected with the rodless cavity room stretches out the rodless cavity room and is located at the oil cylinder It is interior.

Wherein, it is equipped at least one first annular groove around the outer surface of the piston, is set in the first annular groove There is sealing ring, so as to form sealing between the outer surface of the piston and the inner surface of the cylinder.

Wherein, the inner surface around the cylinder close to the end of the piston rod is equipped at least one second annular groove, Sealing ring is equipped in the second annular groove, so as to be formed between the outer surface of the piston rod and the barrel end close Envelope.

The utility model also provides a kind of caterpillar machinery, comprising: above-mentioned track takeup.

(3) beneficial effect

Track takeup and caterpillar machinery provided by the utility model push piston by the pretightning force of elastic element Bar travels forward the passive tension for driving tensioning wheel to realize to crawler belt；And piston rod is pushed away in conjunction with hydraulic oil Power, so that tensioning wheel be driven to realize the active adjustment effect to crawler belt tighting degree.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of a preferred embodiment of the utility model track takeup；

Fig. 2 is the structural schematic diagram of a preferred embodiment of the utility model caterpillar machinery；

In figure, 1- pouring orifice；2- rodless cavity room；3- piston；4- piston rod；5- elastic element；6- straight-bar；7- crankshaft；8- Tensioning wheel；The first cavity of 9-；10- through-hole；11- rod chamber room；12- oil cylinder；13- tensioning apparatus.

Specific embodiment

With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below Example is not intended to limit the scope of the present invention for illustrating the utility model.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.

Fig. 1 shows a preferred embodiment of the utility model track takeup, as shown in Figure 1, the crawler tensioning Device includes: strainer and oil cylinder 12；Strainer includes piston rod 4, piston 3, cylinder and elastic element 5；Piston rod 4 One end is connected with piston 3 and is arranged in cylinder, and cylinder is divided into rod chamber room 11 and rodless cavity room 2；Piston rod 4 is far from living One end of plug 3 is stretched out outside cylinder to be connected with tensioning wheel 8；Elastic element 5 is arranged in rodless cavity room 2；Oil cylinder 12 is equipped with oiling Mouth 1, pouring orifice 1 is communicated with rodless cavity room 2.

Specifically, the effect of track takeup is the tightness for adjusting crawler belt, so that crawler belt is unlikely to pendency or mistake In tight etc..The track takeup includes: strainer and oil cylinder 12；The strainer includes: piston rod 4, piston 3, cylinder Body and elastic element 5, that is, the strainer includes cylinder and elastic element 5, for example, the vertical sectional shape of cylinder be it is round or Rectangle etc.；Correspondingly, the vertical sectional shape of piston 3 is matched circle or rectangle etc..For example, the vertical of piston rod 4 cuts Face shape is round or rectangle etc., then cylinder is equipped with the opening of respective shapes, so that piston rod 4 stretches out cylinder.For example, piston 3 with the connection type of piston rod 4 be fixedly connected or be detachably connected；Alternatively, piston 3 and the integrated molding of piston rod 4 etc..It will Connected piston rod 4 and piston 3 are arranged in cylinder, and the inside of cylinder is divided into rod chamber room 11 and rodless cavity room 2 two Point；That is, can move in cylinder when piston 3 is by external force, and then drive piston rod 4 mobile.

Elastic element 5 is arranged in rodless cavity room 2, that is, one end and rodless cavity room 2 of elastic element 5 are close to piston 3 End is connected, and the other end is connected with rodless cavity room 2 far from the end of piston 3；I.e. elastic element 5 is horizontally installed on rodless cavity room 2 Interior, certain elastic element 5 can also be slightly askew arranged in rodless cavity room 2.And the one end of piston rod 4 far from piston 3 with Bearing up pulley 8 is connected, for example, the end of piston rod 4 is fixedly connected or is detachably connected with tensioning wheel 8, for example, the connection relationship of the two To be detachably connected, then more conveniently piston rod 4 and tensioning wheel 8 can be separated, to be cleaned, to be repaired to piston rod 4 or Replacement etc..

When being tensioned using the track takeup to crawler belt, since crawler belt is wound around on tensioning wheel 8, and tensioning wheel 8 are connected with piston rod 4；Then under normal use operating condition, since crawler belt has certain pressure to tensioning wheel 8, then 8 pairs of work of tensioning wheel Stopper rod 4 also has certain pressure；It, can be to the elastic element 5 (for example, spring) in rodless cavity room 2 when piston rod 4 is under pressure Generate certain pressure；At this point, spring generates a reaction force to piston rod 4, the reaction force and tensioning wheel 8 are to piston rod 4 pressure direction is on the contrary, then make spring that piston rod 4 be pushed to move along the direction of reaction force, that is, passes through the pretightning force of spring It pushes piston rod 4 to move along the direction of reaction force, and then tensioning wheel 8 is driven to realize the tension to crawler belt.

Alternatively, need by limit or need to eliminate crawler belt pendency the problems such as when, need at this time to crawler belt apply compared with Big power then can inject hydraulic oil into oil cylinder 12 by pouring orifice 1, so that hydraulic oil enters the rodless cavity room of cylinder In 2, then hydraulic oil can generate certain pressure to piston 3, and piston 3 can generate certain pressure to piston rod 4；That is, in bullet On the basis of the pretightning force of spring pushes piston rod 4 to move, in addition thrust of the hydraulic oil to piston rod 4, reaches increase to piston rod 4 Thrust purpose, and then increase to the thrust of tensioning wheel 8, so that tensioning wheel 8 can generate biggish tensioning to crawler belt Power enables crawler belt by limit or eliminates the pendency problem etc. of crawler belt.

In the utility model embodiment, piston rod 4 is pushed to travel forward to drive by the pretightning force of elastic element 5 Tensioning wheel 8 realizes the passive tension to crawler belt；And in conjunction with hydraulic oil to the thrust of piston rod 4, to drive tensioning wheel 8 realize the active adjustment effect to crawler belt tighting degree.

Further, track takeup further include: straight-bar 6；The end that piston rod 4 is connected with piston 3 is recessed inwardly The first cavity 9 is formed, piston 3 has axially disposed through-hole 10, so that rodless cavity room 2 is communicated with the first cavity 9；Straight-bar 6 It is inserted into elastic element 5, and one end of elastic element 5 is connected with rodless cavity room 2, the other end sequentially passes through through-hole 10 and the first sky Chamber 9 is connected；One end of straight-bar 6 is connected with rodless cavity room 2, and the other end sequentially passes through through-hole 10 and is connected with the first cavity 9.

Specifically, the end that piston rod 4 is connected with piston 3 is recessed inwardly to form the first cavity 9, for example, first cavity 9 It is in a certain angle with the axis of piston rod 4；Alternatively, the first cavity 9 is located at the direction where the axis of piston rod 4, i.e., first is empty Chamber 9 is tiltably arranged in piston rod 4, and setting that can also be horizontal is in piston rod 4.Correspondingly, piston 3 has through-hole 10, for example, the through-hole 10 and the axis of piston 3 are in a certain angle；Alternatively, the through-hole 10 is located at the side where the axis of piston 3 To that is, through-hole 10 is tiltably arranged in piston 3, and setting that can also be horizontal is in piston 3, as long as can be by rodless cavity room 2 It is connected to the first cavity 9.

Straight-bar 6 is inserted into elastic element 5, for example, elastic element 5 is helical spring, then straight-bar 6 is inserted into the helical spring Interior, i.e., spiral spring cover is outside straight-bar 6；And it is cased with 6 one end of straight-bar and end of the rodless cavity room 2 far from piston 3 of helical spring Be connected, the other end is connected with the first cavity 9 far from the end of piston 3, that is, helical spring and straight-bar 6 and meanwhile from rodless cavity room 2 according to In secondary insertion through-hole 10 and the first cavity 9.Then the straight-bar 6 can play the role of support elastic element 5, that is, elastic element 5 with Compressive state is set in outside straight-bar 6, and elastic element 5 is arranged in rodless cavity room 2, through-hole 10 and along the axial direction of straight-bar 6 In the section that one cavity 9 is constituted, so that elastic element 5 in the pressure by tensioning wheel 8, can preferably utilize it certainly The elastic reaction of body applies reaction force to piston rod 4, so that elastic element 5 is relatively steady to the reaction force of piston rod 4 It is fixed, improve the reliability of entire tensioning apparatus.

Further, track takeup further include: crankshaft 7；In the one end of piston rod 4 far from piston 3 and crankshaft 7 Portion is connected, and tensioning wheel 8 is connected with the end of crankshaft 7.That is, piston rod 4 is connected by crankshaft 7 with tensioning wheel 8；Then realizing tensioning It when taking turns the tension of 8 pairs of crawler belts, either pushes piston rod 4 to move using the pretightning force of elastic element 5, or combines hydraulic Oil pushes piston rod 4 to move together, and first band dynamic crankshaft 7 is mobile for piston rod 4, then drives tensioning wheel 8 to move by crankshaft 7, And then achieve the purpose that adjust crawler belt tighting degree.

Further, the vertical sectional shape of oil cylinder 12 is U-shaped, and cylinder protrudes into the sunk area of oil cylinder 12, and rodless cavity Room 2 is connected with the bottom of sunk area.It, can also be by the transversal of oil cylinder 12 if the cross-sectional shape of cylinder and piston 3 is circle Face shape is set as circular ring shape, so that cylinder can more conveniently be placed on the sunk area of oil cylinder 12, and make the outer wall of cylinder with The inner wall of oil cylinder 12 is bonded, and reduces the space occupied of tensioning apparatus.And the setting of the cross section of oil cylinder 12 is U-shaped, then cylinder can It more conveniently protrudes into the sunk area of oil cylinder 12, that is, so that cylinder is in contact with oil cylinder 12；And rodless cavity room 2 is set to The bottom of sunk area, that is, so that the oil circuit between rodless cavity room 2 and oil cylinder 12 is shorter, then the hydraulic oil in oil cylinder 12 can It is faster to flow into rodless cavity room 2, so that hydraulic oil can push piston rod 4 mobile faster, improve entire tensioning The efficiency of device.

Further, the first cavity 9 is arranged in piston rod 4 along the axial direction of piston rod 4, and through-hole 10 is along piston 3 Axial direction is arranged in piston 3.Then the first cavity 9 along piston rod 4 axial direction processing, and the machining path of the first cavity 9 compared with It is short, so that the process of the first cavity 9 is more convenient and rapid.Through-hole 10 is processed along the axial direction of piston 3, and through-hole 10 Machining path is shorter, then makes the process in entire channel more convenient and convenient.Then the first cavity 9 and through-hole 10 constitute one Along the channel of piston rod 4 axially arranged, then have elastic component 5 straight-bar 6 of set is made to be also at axial direction；For example, elastic Element 5 is helical spring, that is, the helical spring compressed is in axial direction arranged, then can accordingly reduce the compression of elastic element 5 Amount, and the corresponding length for reducing elastic element 5, achieve the purpose that save the cost.

Further, one end that straight-bar 6 is connected with rodless cavity room 2 is stretched out rodless cavity room 2 and is located in oil cylinder 12.That is, oily Cylinder 12 is recessed inwardly to form a groove close to the side of rodless cavity room 2, and straight-bar 6 stretches out nothing close to the end of rodless cavity room 2 Rod cavity room 2 and be located at the groove in；Oil cylinder can be simplified by the positional relationship of straight-bar 6 fixed oil cylinder 12 and strainer Connection relationship between 12 and strainer.

Further, it is equipped at least one first annular groove around the outer surface of piston 3, is equipped in first annular groove close Seal, so as to form sealing between the outer surface of piston 3 and the inner surface of cylinder.For example, there are three setting around the outer surface of piston 3 First annular groove, for example, the cross-sectional shape of first annular groove is rectangle or circle etc.；Correspondingly, sealing ring is transversal Face shape is also rectangle or circle etc..It is equipped at least one first annular groove around the outer surface of piston 3, and first annular at this It is respectively provided with sealing ring in groove, then also improves the sealing effect between piston 3 and cylinder.It certainly, can also will be each first annular The cross-sectional shape of groove all sets not identical, then is stuck in the cross-sectional shape of the sealing ring in first annular groove also each not phase Together.

Further, the inner surface around the cylinder close to the end of the piston rod 4 is equipped at least one second annular Groove, the second annular groove is interior to be equipped with sealing ring, so that shape between the outer surface of the piston rod 4 and the barrel end At sealing.For example, the inner surface around the end of cylinder is set, there are four second annular grooves, and four second annular grooves are close to cylinder The end setting that body is connected with piston rod 4；For example, the cross-sectional shape of second annular groove is rectangle or circle etc.；Correspondingly, The cross-sectional shape of sealing ring is also rectangle or circle etc..For example, first and the 4th in four second annular grooves Cross-sectional shape is rectangle, and second is circle with a cross-sectional shape of third；Correspondingly, first and the 4th are stuck in The cross-sectional shape of sealing ring in second ring groove is rectangle, the sealing being stuck in second and third second annular groove The cross-sectional shape of circle is circle.Certainly, also the cross-sectional shape of second annular groove can be set as other shapes, sealing ring Select corresponding shape.Inner surface around cylinder close to the end of piston rod 4 is equipped at least one second annular groove, and at this It is respectively provided with sealing ring in second annular groove, then also improves the sealing effect between piston rod 4 and cylinder.

As shown in Fig. 2, the utility model embodiment also provides a kind of caterpillar machinery, which includes above-mentioned Track takeup 13.For example, the caterpillar machinery is creeper truck, then the track takeup 13 is mounted on two sides in creeper truck The end of crawler belt, that is, crawler belt is wound around outside tensioning wheel 8, and piston rod 4 is connected with tensioning wheel 8；Also oil cylinder 12 can be fixed on shoe On vehicle frame with vehicle.The technical effect that the caterpillar machinery has is identical as 13 bring technical effect of track takeup, This no longer has stating.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims (9)

1. a kind of track takeup characterized by comprising strainer and oil cylinder；

The strainer includes piston rod, piston, cylinder and elastic element；One end of the piston rod is connected with the piston And be arranged in the cylinder, the cylinder is divided into rod chamber room and rodless cavity room；

The piston rod stretches out outside the cylinder far from one end of the piston to be connected with tensioning wheel；The elastic element setting exists In the rodless cavity room；The oil cylinder is equipped with pouring orifice, and the pouring orifice is communicated with the rodless cavity room.

2. track takeup according to claim 1, which is characterized in that further include: straight-bar；

The end that the piston rod is connected with the piston is recessed inwardly to form the first cavity；The piston has through-hole, so that The rodless cavity room is communicated with first cavity；

The straight-bar is inserted into the elastic element, and one end of the elastic element is connected with the rodless cavity room, the other end It is connected across the through-hole with first cavity；One end of the straight-bar is connected with the rodless cavity room, and the other end passes through institute Through-hole is stated to be connected with first cavity.

3. track takeup according to claim 1, which is characterized in that further include: crankshaft；The piston rod is far from institute The one end for stating piston is connected with the middle part of the crankshaft, and the tensioning wheel is connected with the end of the crankshaft.

4. track takeup according to claim 1, which is characterized in that the vertical sectional shape of the oil cylinder is U-shaped, institute It states cylinder to protrude into the sunk area of the oil cylinder, and the rodless cavity room is connected with the bottom of the sunk area.

5. track takeup according to claim 2, which is characterized in that axis of first cavity along the piston rod It is arranged in the piston rod to direction, the through-hole is arranged in the piston along the axial direction of the piston.

6. track takeup according to claim 2, which is characterized in that the straight-bar is connected with the rodless cavity room The rodless cavity room is stretched out in one end, and is located in the oil cylinder.

7. track takeup according to claim 1-6, which is characterized in that the outer surface around the piston is set There is at least one first annular groove, sealing ring is equipped in the first annular groove, so that the outer surface of the piston and institute It states and forms sealing between the inner surface of cylinder.

8. track takeup according to claim 7, which is characterized in that around the cylinder close to the end of the piston rod The inner surface in portion is equipped at least one second annular groove, sealing ring is equipped in the second annular groove, so that the piston Sealing is formed between the outer surface of bar and the barrel end.

9. a kind of caterpillar machinery characterized by comprising the described in any item track takeups of claim 1-8.