CN111377370A

CN111377370A - Engineering machine and supporting leg box assembly thereof

Info

Publication number: CN111377370A
Application number: CN201811638499.3A
Authority: CN
Inventors: 楚金甫; 周东晓; 尹腾飞; 柴术和; 许红飞; 王闯; 夏旭东
Original assignee: Henan Senyuan Heavy Industry Co Ltd
Current assignee: Henan Senyuan Heavy Industry Co Ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2020-07-07

Abstract

The invention relates to the field of engineering machinery, in particular to engineering machinery and a supporting leg box assembly thereof. The engineering machinery comprises a chassis and a leg box assembly, wherein the leg box assembly comprises a box body, a vertical oil cylinder and a leg seat connected to a ball head at the lower end of the vertical oil cylinder, the leg seat comprises a push-pull chute matched with the ball head, bearing arms are arranged on two sides of the push-pull chute in the groove width direction, a bearing seat is arranged on the box body, or the bearing arms are arranged on the box body, and bearing seats are arranged on two sides of the push-pull chute in the groove width direction; the bearing arm can be inserted into the bearing seat and is matched with the bearing seat in a guiding way; in the moving direction of the support base matched with the ball head in a sliding way along the push-pull sliding chute, the support base is in a retracted state separated from the ball head and hung on the box body by the matching of the bearing arm and the bearing base. The supporting leg box assembly in the engineering machinery can solve the problems that the retraction distance of the supporting leg seat is small and the adjusting effect is limited in the prior art, so that the engineering machinery has the advantage of high trafficability after the supporting leg seat is retracted.

Description

Engineering machine and supporting leg box assembly thereof

Technical Field

The invention relates to the technical field of engineering machinery, in particular to engineering machinery and a supporting leg box assembly thereof.

Background

In order to maintain the stability of the engineering machine during working, a leg box assembly is usually installed on a chassis. The supporting leg box assembly comprises a vertical oil cylinder and a supporting leg seat, the vertical oil cylinder plays a driving role, the supporting leg seat is connected with the vertical oil cylinder, a ball head is arranged at the lower end of the vertical oil cylinder and is in butt joint with the supporting leg seat through the ball head, and the supporting leg seat is used for being supported on the ground.

In order to further improve the stability of the engineering machine, the position of the leg box assembly is usually set at the outermost position where the engineering machine can be installed, and the size of the leg base is designed to be relatively large, which results in that the distance between the outer edges of the leg bases at two sides of the engineering machine becomes the widest size of the engineering machine, so that the potential safety hazard is brought to other vehicles or pedestrians when the leg base is too far outside during driving of the engineering machine, and the trafficability of the engineering machine is poor, so that the leg base can be taken back into the interior of the engineering machine when the engineering machine does not work when the leg box assembly is designed.

The utility model discloses a chinese utility model patent that the bulletin number of granting is CN201002939Y discloses a plug-type leg disc, this plug-type leg disc is installed in the bottom of perpendicular hydro-cylinder, its concrete structure includes the leg disc structure of direct and ground contact, be equipped with the push-and-pull spout on the leg disc structure, the push-and-pull spout is close to the one end in the outside and is set up and constitute the blind end, lean on the uncovered setting of one end in the inside, be provided with first fixed orifices from outer to interior interval on the cell wall of push-and-pull spout, second fixed orifices and third fixed orifices, wherein the leg disc that corresponds between second fixed orifices and the third fixed orifices is structural be equipped with the contact roof pressure structure with the bulb adaptation of perpendicular hydro-cylinder. When the engineering machinery works, the ball head of the vertical oil cylinder extends into the push-pull sliding chute, is positioned between the second fixing hole and the third fixing hole, and is locked relative to the support leg disc through the positioning pins inserted in the second fixing hole and the third fixing hole; when the engineering machinery does not work, the positioning pins inserted in the second fixing hole and the third fixing hole are pulled out, the supporting leg disc is pushed inwards until the closed end of the push-pull sliding groove is contacted with the ball head, the positioning pin is inserted into the first fixing hole, and the ball head is locked between the closed end of the push-pull sliding groove and the first fixing hole.

Although the structure of the push-pull type support leg disc can enable the support leg disc to be inwards retracted when the engineering machinery does not work, so that potential safety hazards caused to other vehicles or pedestrians due to the fact that the support leg seat is too far outside when the engineering machinery runs are avoided to a certain extent, the passing performance of the engineering machinery is improved, when the support leg disc is inwards retracted to a limit state, the outermost side of the support leg disc is still located on the outer side of the ball head of the vertical oil cylinder, the widest size of the engineering machinery is still the distance between the outer edges of the support leg discs on two sides of the engineering machinery, and therefore the passing performance of the engineering machinery still has an optimized space.

Disclosure of Invention

The invention aims to provide a supporting leg box assembly which is used for solving the problems of small retraction distance and limited adjusting effect of a supporting leg plate in the prior art; the invention also provides an engineering machine using the supporting leg box assembly, so that the engineering machine has the advantage of high trafficability after the supporting leg plate in the supporting leg box assembly is retracted.

In order to achieve the purpose, the supporting leg box assembly adopts the following technical scheme: the supporting leg box assembly comprises a box body, a vertical oil cylinder arranged on the box body and a supporting leg seat connected to a ball head at the lower end of the vertical oil cylinder, wherein the supporting leg seat comprises a push-pull chute matched with the ball head; the bearing arm can be inserted into the bearing seat and is matched with the bearing seat in a guiding way; in the moving direction of the support base matched with the ball head in a sliding way along the push-pull sliding chute, the support base is in a retracted state separated from the ball head and hung on the box body by the matching of the bearing arm and the bearing base.

The supporting leg box assembly has the beneficial effects that: this landing leg case assembly bears the seat through setting up on the box, set up the bearing arm on the leg seat or set up the bearing arm on the box, set up the mode that bears the seat on the leg seat, make the leg seat can break away from the cooperation with the bulb and hang on the box, because the length of bearing the position of seat and bearing arm all is adjustable, so the leg seat can remove distance far for the bulb, and then make the control range of landing leg case assembly great, the trafficability characteristic of engineering machine who has improved the use this landing leg case assembly.

Furthermore, the box body is provided with a guide pillar for forming a bearing arm, and two sides of the push-pull chute in the width direction of the chute are provided with guide sleeves for forming a bearing seat. The matching structure of the guide pillar and the guide sleeve is simple, and the processing is convenient.

Furthermore, a sleeve is fixedly arranged on the bottom surface of the box body, the guide pillar is movably arranged in the sleeve along the axial direction of the sleeve, and the guide pillar has enough length so that the corresponding end of the guide pillar can extend out of the guide sleeve when the support foot seat and the vertical oil cylinder are coaxially arranged. The guide pillar is movably arranged, the movement in the sleeve is very flexible, and the guide pillar is pushed more labor-saving than the support foot seat in the process that the guide pillar is inserted into the guide sleeve; in addition, the matching part of the guide column and the sleeve forms a fulcrum for supporting the guide column, and when the support foot seat penetrates into the guide column, the guide column can support the support foot seat by means of the fulcrum.

Furthermore, one end of the guide post, which is back to the support foot seat, is provided with a limit structure used for being matched with the inner end of the sleeve in a stop way. This arrangement prevents the guide post from moving too far and disengaging from the sleeve.

Furthermore, a stopping structure used for being matched with the outer end of the guide sleeve or the outer end of the sleeve in a stopping mode is arranged at one end, extending out of the guide sleeve, of the guide column, a sleeve limiting pin hole for enabling the lock pin to be inserted into the guide column so that the lock pin and the inner end of the sleeve are matched in a stopping mode is further formed in the guide column, and the distance between the sleeve limiting pin hole and the stopping structure corresponds to the axial size of the sleeve. The stop structure and the sleeve limiting pin hole are arranged, and the lock pin is inserted into the sleeve limiting pin hole, so that the guide pillar can be prevented from freely moving relative to the sleeve, and the guide pillar can be conveniently locked.

Furthermore, the guide post is provided with a support foot seat fixing pin hole for the insertion of the lock pin so that the lock pin and the inner end of the sleeve form stop matching, and the distance between the support foot seat fixing pin hole and the stop structure corresponds to the sum of the axial size of the sleeve and the axial size of the guide sleeve. The stopping structure and the supporting foot seat fixing pin hole are arranged, and the locking pin is inserted into the supporting foot seat fixing pin hole, so that the supporting foot seat can be fixed on the sleeve and further fixed on the box body, and the supporting foot seat is prevented from returning to the original position.

Further, the stopper structure is composed of a stopper pin hole into which the lock pin is inserted and a lock pin inserted into the stopper pin hole. The stop pin holes are formed in the guide columns, so that the machining is simple; the stop pin hole is matched with the lock pin to form a stop structure, the lock pin is convenient to assemble and disassemble, and the support foot seat is convenient to fold.

The engineering machinery adopts the following technical scheme: the engineering machinery comprises a chassis and a leg box assembly connected to the chassis, wherein the leg box assembly comprises a box body, a vertical oil cylinder arranged on the box body and a leg seat connected to a ball head at the lower end of the vertical oil cylinder, the leg seat comprises a push-pull chute matched with the ball head, bearing arms are arranged on two sides of the push-pull chute in the width direction of the chute, a bearing seat is arranged on the box body, or the bearing arms are arranged on the box body, and bearing seats are arranged on two sides of the push-pull chute in the width direction of the chute; the bearing arm can be inserted into the bearing seat and is matched with the bearing seat in a guiding way; in the moving direction of the support base matched with the ball head in a sliding way along the push-pull sliding chute, the support base is in a retracted state separated from the ball head and hung on the box body by the matching of the bearing arm and the bearing base.

The engineering machine has the beneficial effects that: this landing leg case assembly among engineering machine tool is through setting up on the box and bearing the seat, set up the bearing arm on the footing seat or set up the bearing arm on the box, set up the mode that bears the seat on the footing seat, make the footing seat can break away from the cooperation with the bulb and hang on the box, because the position that bears the seat and the length of bearing arm are all adjustable, so the footing seat can move distance far for the bulb, and then makes the control range of landing leg case assembly great, has improved the trafficability characteristic of this engineering machine tool.

Drawings

FIG. 1 is a schematic illustration of a leg box assembly of a preferred embodiment of a work machine according to the present disclosure;

FIG. 2 is a schematic structural diagram of a housing of a leg box assembly of a preferred embodiment of a work machine according to the present invention;

FIG. 3 is a schematic illustration of a leg assembly of a leg box assembly of a preferred embodiment of a work machine according to the present disclosure;

FIG. 4 is a schematic diagram of a leg rest of a leg box assembly according to a preferred embodiment of the present disclosure;

FIG. 5 is a schematic diagram illustrating the connection between a vertical cylinder and a foot rest in a leg box assembly according to a preferred embodiment of the present invention;

FIG. 6 is a schematic diagram of a spring pin of a leg box assembly of a preferred embodiment of a work machine according to the present disclosure;

FIG. 7 is a schematic diagram of a guide post of a leg box assembly of a preferred embodiment of the construction machine of the present invention;

FIG. 8 is a schematic diagram illustrating a state where a guide post of the leg box assembly of the preferred embodiment of the construction machine is inserted into a guide sleeve;

FIG. 9 is a schematic view of a leg box assembly of the preferred embodiment of the construction machine according to the present invention, after the guide post is inserted into the guide sleeve and the positioning pin is removed;

fig. 10 is a schematic view illustrating a state where the leg rest is retracted in the leg box assembly according to the preferred embodiment of the construction machine of the present invention.

In the drawings: 1-box, 2-leg assembly, 3-leg seat, 4-guide column, 5-positioning pin, 6-spring pin, 11-box body, 12-connecting plate, 13-sleeve, 21-leg box, 22-vertical oil cylinder, 31-leg disc, 32-supporting seat, 33-bending plate, 34-guide sleeve, 41-guide column body, 42-guide column flange, 43-first guide column hole, 44-second guide column hole, 45-third guide column hole, 61-contact pin, 62-lock hook, 111-installation cavity, 221-ball head, 321-supporting groove, 331-positioning hole and 3211-notch.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings.

In a preferred embodiment of the present disclosure, a work machine includes a chassis and a plurality of leg box assemblies coupled to the chassis. As shown in fig. 1, the leg box assembly comprises a box body 1, the box body 1 serves as a mounting base of the whole leg box assembly, a leg assembly 2 is mounted in the box body 1, a leg base 3 is connected to the bottom of the leg assembly 2, and the leg assembly 2 and the leg base 3 are supported on the ground together to enable the engineering machinery to be more stable during operation.

As shown in fig. 2, the box body 1 includes a box body 11, the box body 11 is formed by assembling various plates, the box body 11 has a mounting cavity 111 for mounting the leg assembly 2, two sleeves 13 are mounted on the lower portion of the bottom plate of the mounting cavity 111 through two parallel connecting plates 12, the two sleeves 13 are arranged in parallel at intervals, and the sleeves 13 are circular tube structures; since the final foot rest 3 is suspended from the sleeve 13, the structural strength of the web 12 and the sleeve 13 is sufficient.

As shown in fig. 3, the leg assembly 2 includes a leg box 21, the leg box 21 is formed by assembling a plurality of plates, a mounting hole for mounting the vertical oil cylinder 22 is formed at one end of the leg box 21, the vertical oil cylinder 22 is mounted in the mounting hole and perpendicular to the ground, a ball 221 is disposed at the bottom of the vertical oil cylinder 22, and the ball 221 is used for connecting with the leg base 3.

As shown in fig. 4, the leg base 3 includes a circular leg plate 31, and in order to make the work machine more stable during operation, the size of the leg plate 31 is generally designed to be larger; the supporting seat 32 is installed in the middle of the supporting leg plate 31, the supporting seat 32 is of a cylindrical structure, a supporting groove 321 matched with the ball head 221 is formed in the supporting seat 32, and when the supporting leg plate is used, the ball head 221 of the vertical oil cylinder 22 is pressed in the supporting groove 321.

As shown in fig. 4, two parallel bending plates 33 are further mounted on the support seat 32, the two bending plates 33 are bent oppositely to form a channel, the channel forms a push-pull chute, the bending plate 33 has a fixing portion and a bending portion, the fixing portion is fixed to the support seat 32, and the bending portion is used for being in stop fit with the ball head 221 after the ball head 221 is loaded into the push-pull chute so as to prevent the foot stand 3 from falling off from the ball head 221 in the up-down direction; two positioning holes 331 are formed in the fixing portions of the two bending plates 33, and the positioning holes 331 in the two bending plates 33 are correspondingly formed.

As shown in fig. 4, the groove wall of the support groove 321 in the length direction of the push-pull chute is provided with a notch 3211, and the notch 3211 has a concave surface adapted to the shape of the ball 221, and the concave surface ensures that the ball 221 can freely pass through the notch 3211 of the support seat 32 when moving in the push-pull chute.

As shown in fig. 4, two guide sleeves 34 are further mounted on the leg plate 31 and on two sides of the supporting seat 32, each guide sleeve 34 is of a circular tube structure, the two guide sleeves 34 are arranged in parallel, and the extending direction of the two guide sleeves 34 is the same as the extending direction of the bending plate 33, when the leg plate 3 needs to be folded, the axis of each guide sleeve 34 coincides with the axis of the sleeve 13 on the box body 1, and this can be achieved by adjusting the size and shape of the connecting plate 12 on the box body 1 for mounting the sleeve 13.

As shown in fig. 5, the vertical cylinder 22 and the leg base 3 are connected by the matching of the ball 221 and the push-pull chute, the ball 221 can enter from one side of the push-pull chute and is finally placed at a corresponding position of the support slot 321, at this time, two positioning holes 331 on the bending plate 33 are respectively located at two sides of the ball 221, the ball 221 and the bending portion of the bending plate 33 are blocked to realize the connection of the vertical cylinder 22 and the leg base 3 in the up-down direction, then, the two positioning pins 5 are inserted into the positioning holes 331 on the bending plate 33, and the positioning pins 5 are locked by the spring pins 6, one end of the positioning pin 5 is provided with a flange, the other end is provided with a positioning pin hole, the spring pin 6 is inserted into the positioning pin hole, and the two positioning pins 5 limit the relative movement of the ball 221.

As shown in fig. 6, the spring pin 6 includes a pin 61 and a latch hook 62, and the pin 61 passes through the positioning pin hole of the positioning pin 5 and is then latched by the latch hook 62.

As shown in fig. 1 and 7, a guide post 4 is installed in each of two sleeves 13 on the box body 1, the guide post 4 can move in the sleeve 13 along the axial direction of the sleeve 13, the guide post 4 has a sufficient length to allow a corresponding end of the guide post 4 to protrude from a guide sleeve 34 when the support base 3 is coaxially arranged with the vertical cylinder 22; the guide post 4 comprises a guide post body 41, one end of the guide post body 41, which is far away from the support foot seat 3, is provided with a guide post flange 42, the guide post flange 42 forms a limiting structure, and the guide post flange 42 can prevent the guide post 4 from being separated from the sleeve 13 due to excessive movement in the process of moving to the support foot seat 3; a first guide hole 43, a second guide hole 44, and a third guide hole 45 are provided in the guide body 41 at a distance from the end where the guide flange 42 is not provided.

The supporting leg box assembly of the engineering machinery is used as follows:

first, as shown in fig. 1, before the support base 3 is retracted, the support base 3 is connected to the vertical cylinder 22, the guide sleeve 34 and the sleeve 13 are coaxial, the guide post 4 is installed in the sleeve 13, the sleeve 13 is located between the first guide post hole 43 and the second guide post hole 44 of the guide post 4, and guide post positioning pins (not shown) are respectively inserted into the first guide post hole 43 and the second guide post hole 44, so as to lock the guide post 4 in the sleeve 13; the guide post positioning pin constitutes a lock pin, the first guide post hole 43 constitutes a stop pin hole, the first guide post hole 43 and the guide post positioning pin inserted into the first guide post hole 43 together constitute a stop structure, and the second guide post hole 44 constitutes a sleeve limit pin hole.

Next, as shown in fig. 8, when the leg base 3 needs to be retracted into the construction machine, the guide post positioning pins inserted into the first guide post hole 43 and the second guide post hole 44 of the guide post 4 are pulled out, the guide post 4 is moved toward the leg base 3 until the guide post 4 passes through the guide bush 34 on the leg base 3, and then the guide post positioning pins are inserted into the first guide post hole 43, thereby connecting the leg base 3 and the guide post 4.

Then, as shown in fig. 9, the positioning pin 5 attached to the bent plate 33 of the leg base 3 is removed, and the position of the ball 221 of the vertical cylinder 22 and the leg base 3 in the longitudinal direction of the push-pull chute is released.

Finally, as shown in fig. 10, the supporting foot seat 3 is pushed, the supporting foot seat 3 and the guide post 4 move together towards the direction of the sleeve 13, in the moving process, the ball head 221 gradually separates from the push-pull chute, and finally the supporting foot seat 3 is hung on the guide post 4 after the ball head 221 separates from the push-pull chute so as to realize the support of the supporting foot seat 3; continuing to push the supporting foot seat 3, when the guide sleeve 34 contacts the sleeve 13, stopping the supporting foot seat 3 by the sleeve 13, extending the third guide post hole 45 on the guide post 4 out of one end of the sleeve 13 far away from the supporting foot seat 3, inserting a guide post positioning pin into the third guide post hole 45 to fix the supporting foot seat 3 relative to the sleeve 13, namely, the retracting state of the supporting foot seat 3, wherein the outermost edge of the supporting foot seat 3 is positioned on the inner side of the outermost edge of the ball head 221 in the retracting state; when the state is retracted, the third guide post hole 45 forms a support base fixing pin hole, and the guide post positioning pin forms a locking pin inserted into the support base fixing pin hole.

In the process, the positions of the first guide post hole, the second guide post hole and the third guide post hole on the guide post and the length of the guide post are set according to actual conditions, so long as the process can be realized.

In the above preferred embodiment, the bearing arm is a guide pillar arranged on the box body, and the bearing seat is a guide sleeve arranged on the support foot seat. In other embodiments, the bearing arm can also be a structure similar to a guide pillar and arranged on the support foot seat, the bearing seat is a structure similar to a guide sleeve and arranged on the box body, and the bearing arm and the bearing seat are mutually matched to realize the folding of the support foot seat and meet the requirements.

In the preferred embodiment, the bearing arm is a guide post, and the bearing seat is a guide sleeve. In other embodiments, the bearing arm and the bearing seat can also adopt other forms, for example, a sliding groove is arranged on the box body, and a sliding block is arranged on the supporting foot seat, which also meets the requirements.

In the preferred embodiment described above, the guide post is slidably mounted within the sleeve. In other embodiments, the guide post may also be a structure fixed on the box body, and when the leg base needs to be folded, after the positioning pin is detached, the operator pushes the leg base to approach the guide post and finally make the guide sleeve sleeved on the guide post through the guiding and supporting effects of the ball head and the push-pull chute.

In the preferred embodiment, the sleeve is fixed to the bottom plate of the mounting cavity of the box body. In other embodiments, the sleeve may also be fixed to other panels of the box body, and it is only necessary to ensure that the guide post finally installed in the sleeve can be guided and engaged with the guide sleeve on the leg base.

In the preferred embodiment, the guide post is provided with a guide post flange at one end of the guide post away from the support base to prevent the guide post from moving too far in the direction of the support base and separating from the sleeve. In other embodiments, the ends of the guide posts may not be provided with guide post flanges.

In the above preferred embodiment, the guide pillar and the sleeve or the guide sleeve are relatively fixed by arranging three guide pillar holes on the guide pillar and matching with the guide pillar positioning pin. In other embodiments, the guide pillar and the sleeve or the guide sleeve may be fixed relatively by other methods, for example, threaded holes are formed in the sleeve and the guide sleeve, a jackscrew is installed in the threaded hole in a matching manner, a corresponding blind hole is formed in the guide pillar, and after the guide pillar moves in place, the jackscrew is screwed into the blind hole to fix the guide pillar and the sleeve or the guide sleeve relatively.

In the above preferred embodiment, the leg plate is a circular plate, and in other embodiments, the leg plate may be a plate with other shapes, such as a square, a regular hexagon, and the like.

The invention also provides a supporting leg box assembly, and the structure of the supporting leg box assembly is the same as that of the supporting leg box assembly in the engineering machinery, so the details are not repeated.

Claims

1. The supporting leg box assembly comprises a box body, a vertical oil cylinder arranged on the box body and a supporting leg seat connected to a ball head at the lower end of the vertical oil cylinder, wherein the supporting leg seat comprises a push-pull chute matched with the ball head; the bearing arm can be inserted into the bearing seat and is in guide fit with the bearing seat; in the moving direction of the support base matched with the ball head in a sliding way along the push-pull sliding chute, the support base is in a retracted state separated from the ball head and hung on the box body by the matching of the bearing arm and the bearing base.

2. The leg box assembly as claimed in claim 1, wherein the box body is provided with a guide post for forming a bearing arm, and guide sleeves for forming a bearing seat are provided on both sides of the push-pull chute in the width direction.

3. The leg box assembly as claimed in claim 2, wherein a sleeve is fixed on the bottom surface of the box body, the guide post is movably disposed in the sleeve along the axial direction of the sleeve, and the guide post has a length sufficient to allow a corresponding end of the guide post to protrude from the guide sleeve when the leg base is coaxially disposed with the vertical cylinder.

4. The leg box assembly as claimed in claim 3, wherein the end of the guide post facing away from the leg base is provided with a limit structure for stop-engaging with the inner end of the sleeve.

5. The leg box assembly as claimed in claim 4, wherein the guide post has a stop structure at an end thereof for extending out of the guide sleeve, and a sleeve stop pin hole for inserting the lock pin to form a stop fit with the inner end of the sleeve, and the distance between the sleeve stop pin hole and the stop structure corresponds to the axial dimension of the sleeve.

6. The leg box assembly as claimed in claim 5, wherein the guide post has a leg fixing pin hole for insertion of the lock pin to form a stop fit with the inner end of the sleeve, and the distance between the leg fixing pin hole and the stop structure corresponds to the sum of the axial dimension of the sleeve and the axial dimension of the guide sleeve.

7. The leg box assembly as claimed in claim 5 or 6, wherein the stopper structure is composed of a stopper pin hole into which a lock pin is inserted and a lock pin inserted into the stopper pin hole.

8. Engineering machinery, comprising a chassis and a leg box assembly connected to the chassis, wherein the leg box assembly is the leg box assembly of any one of claims 1-7.