WO2014079248A1

WO2014079248A1 - Skid-proof support leg apparatus and mobile machinery

Info

Publication number: WO2014079248A1
Application number: PCT/CN2013/082414
Authority: WO
Inventors: 程磊; 王子铭; 陆文杰; 陈宝磊; 牛满钝; 魏玉宏
Original assignee: 徐州徐工随车起重机有限公司
Priority date: 2012-11-26
Filing date: 2013-08-28
Publication date: 2014-05-30
Also published as: BR112015012157A2; RU2015124585A; CN103832410A; CN103832410B; ZA201504667B; RU2610895C2; BR112015012157B1

Abstract

A skid-proof support foot apparatus and a mobile machinery, related to the technical field of engineering machineries. Solved is the technical problem found in the prior art of support foots being prone to skidding. The skid-proof support foot apparatus comprises a base (61), a support foot (62), a fastener (63), and a slide rail structure. The slide rail structure is arranged between the support foot (62) and the base (61). The support foot (62) is allowed to slide along a predetermined direction on the base (61) via the slide rail structure. The fastener (63) is arranged on the base (61) and on the support foot (62). When the support foot (62) slides along the predetermined direction on the base (61) via the slide rail structure to a predetermined lock position, the fastener (63) is allowed to lock the support foot (62) onto the base (61). The mobile machinery comprises a fixed frame, A-shaped support legs, a telescoping power mechanism, and the skid-proof support foot apparatus, for use in increasing the skid-proof performance of the support legs.

Description

Anti-skid foot device and walking machine

The invention relates to the technical field of engineering machinery, in particular to an anti-skid foot device and a walking machine provided with the anti-slip foot device. Background technique

Many mobile machines (for example: wreckers) are equipped with front and rear leg devices. The front and rear leg devices provide stability support during walking machinery, preventing over-loading and overturning.

Taking the wrecker as an example, the wrecker is a special vehicle for cleaning and hoisting. The leg is the main component, and it plays an important role in the work process. On the one hand, the performance of the legs directly affects the lifting of the boom and the lifting of the supporting arm; on the other hand, the supporting legs are a protective barrier for stability and safety during the clearing operation.

At present, the front legs of most heavy-duty wreckers at home and abroad are A-type or H-type, among which:

The A-type leg has a large span, compact structure and small footprint; the H-shaped leg has a simple structure, but the span of the leg is small, which is not applicable to the special heavy-duty wrecker.

When the wrecker is working, especially when the boom is hoisted and dragged from a long distance on the side, due to the large mass of the working mechanism and the weight and the long arm, a large tilting moment is generated, especially for the dragging. When you are in a hurry, you will be subjected to a large inertia shock, so that the vehicle is in danger of tipping over. In order to improve the safety during operation, the A-type leg is generally used in the wrecker to increase the span and improve the stability of the vehicle.

The prior art has at least the following technical problems:

1. The existing A-type legs will have side slip phenomenon during the working process, which has a large impact load on the whole vehicle, which directly affects the stability of the whole vehicle. In serious cases, it will lead to safety accidents. The whole nature is worrying;

2. When the leg is working, the leg is deformed greatly and the force is not good;

3. During the process of the side legs sliding, the foot plate at the bottom of the leg is more damaged to the ground;

4. In order to reduce the phenomenon of ground damage caused by side slip, the truck must carry the skid and put the mat on the ground, which increases the labor intensity of the operator and at the same time reduces the efficiency of the obstacle. Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to provide an anti-skid foot device and a traveling machine provided with the anti-slip foot device, which solves the technical problem that the leg is prone to side slip in the prior art. In addition, the preferred technical solution of the present invention also solves the technical problem that the legs are deformed greatly and the stress is not good, and has the advantages that it is not easy to cause damage to the ground, and the operator has low labor intensity.

To achieve the above object, the present invention provides the following technical solutions:

The anti-skid foot device provided by the embodiment of the invention comprises a base, a leg, a locker and a slide rail structure, wherein:

The slide rail structure is disposed between the leg and the base, and the leg can slide on the base in a predetermined direction through the slide rail structure;

The tightener is disposed on the base and the leg, and the lock can be slid by the slide rail structure on the base in the predetermined direction to a predetermined locking position, the locker can The leg is locked to the base.

In a preferred or alternative embodiment, the legs are bottom plate-shaped leg plates, and the slide rail structure includes two oppositely disposed guide plates fixed to the base, and the two guide plates are Two guiding grooves are formed between the bases, and two opposite edges of the bottom of the leg plate are respectively embedded in the two guiding grooves, and the length direction of the two guiding grooves is opposite to the predetermined direction. Consistent.

In a preferred or alternative embodiment, the slide rail structure includes a track groove disposed on the base and a guide fixed to the bottom of the leg plate, the guide The member is embedded in the track groove and slidable along the length direction of the track groove, and the length direction of the track groove coincides with the predetermined direction.

In a preferred or alternative embodiment, the locker includes a limit post, a resilient structure, and a limiting hole disposed on the base, wherein:

The axial direction of the limiting post is perpendicular to the direction in which the leg slides; the elastic structure is disposed between the leg and the limiting post; the leg passes through the sliding rail structure at the base When the upper sliding direction is in the predetermined direction to the predetermined locking position, the limiting post is embedded in the limiting hole by the elastic force of the elastic structure.

In a preferred or alternative embodiment, the resilient structure includes a sleeve, an elastic member, and a gripping member, wherein

One end of the sleeve is fixedly connected to the leg, and the other end of the sleeve is provided with a retaining edge integrally connected with the sleeve and having an inner diameter smaller than an inner diameter of the sleeve;

The limiting post includes an end head having an outer diameter larger than the embedding portion, and an embedding portion embedded in the sleeve and the embedding portion extending out of the sleeve and The portion of the detachment preventing edge is provided with the gripping member for grasping by a human hand;

The elastic members are disposed in the sleeve and respectively abut against the retaining edge and the end portion.

In a preferred or alternative embodiment, the elastic member is a spring sleeved on the embedded portion of the limiting post, and the gripping member extends out of the sleeve with the embedded portion And a pull ring or handle connected to the portion of the detachment preventing edge.

In a preferred or alternative embodiment, the anti-slip foot device further includes at least one of a retaining plate, a wear pad, and a limit member, wherein:

The retaining plate is fixedly connected to the edge of the base, and the longitudinal direction of the retaining plate is perpendicular to the direction in which the leg slides; When the leg slides to the predetermined locking position on the base in the predetermined direction by the sliding rail structure, the leg abuts against the anti-off plate;

The number of the wear pads is at least two, and is evenly distributed on the bottom surface of the base and fixedly connected to the bottom surface of the base;

The limiting member is fixedly connected to the base, and when the leg slides on the base in the predetermined direction by the sliding rail structure to a predetermined stowed position, the leg is opposite to the limiting member Pick up.

In a preferred or alternative embodiment, a handle is also attached to the retaining plate.

The traveling machine provided by the embodiment of the present invention includes a fixing frame, an A-type leg, a stretching power mechanism, and an anti-skid foot device provided by any technical solution of the embodiment of the present invention, wherein:

The A-type leg includes a left telescopic leg and a right telescopic leg, and the left telescopic leg and the right telescopic leg each include a basic leg and a hinged joint with the fixing frame The movable leg of the basic leg sliding connection;

The telescopic power mechanism is disposed between the movable leg of the left telescopic leg and the right telescopic leg and the fixed frame, and the telescopic power mechanism can drive the movable leg relative to the Rotating the holder to extend or retract relative to the base leg slidably coupled to the movable leg;

The leg of the anti-slip foot device is hinged to the bottom of the movable leg. In a preferred or alternative embodiment, the left telescopic leg and the right telescopic leg each further comprise at least one of a linkage, a limit stop, and a slider, wherein:

The link mechanism includes a first link and a second link;

The telescopic power mechanism is disposed between each of the left telescopic leg and the right telescopic leg, and the telescopic power mechanism includes a telescopic cylinder and a variable amplitude cylinder; One of a cylinder barrel and a piston rod of the telescopic cylinder is connected to the fixing frame, and a cylinder of the telescopic cylinder and a piston rod are connected to the movable leg; the first connecting rod and the One end of each of the second connecting rods is hinged with one of the cylinder and the piston rod of the variable amplitude cylinder;

The other end of the first link is hinged to the base leg;

The cylinder of the luffing cylinder and the other end of the piston rod and the other end of the second link are respectively hinged at different positions of the fixing frame, and the position of the luffing cylinder is between the a link between the link and the second link;

The base leg of each of the left telescopic leg and the right telescopic leg is fixed with the limiting baffle, and the bottom of the limiting baffle is provided with a concave portion, the leg The top portion is fixed with a convex portion, and the telescopic power mechanism can drive the movable leg and the leg to move to a position where the convex portion is embedded in the concave portion;

The slider is disposed between the left leg of the left telescopic leg and the right telescopic leg and the movable leg, and the basic leg passes the slider and the movable leg Form a sliding connection.

Based on any of the foregoing technical solutions, the embodiment of the present invention can at least produce the following technical effects:

According to the anti-skid foot device provided by the embodiment of the present invention, the leg can slide in the predetermined direction on the base through the slide rail structure, and the leg can slide in the predetermined direction on the base by the slide rail structure to a predetermined locking position, the locker can The leg is locked on the base. Therefore, when the anti-slip foot device is applied to the A-type leg of the traveling machine, the process of automatically changing the leg span and the position of the leg during the sliding process of the leg on the base is smooth and shock-free. At the same time, the locker can better realize the positioning of the legs and the legs connected thereto, so that the occurrence of the side slip phenomenon is avoided, so that the technical problem that the legs are prone to side slip is solved in the prior art. Since the problem of skidding is solved and the transition of the legs is smooth and shock-free, it is not easy to cause damage to the ground and deformation of the legs. Small, relatively uniform force, better structural reliability, thus ensuring the stability and safety of the entire walking machine (such as the wrecker), and at the same time, no need for operators to carry and install the skid, so the labor intensity of the operator Smaller.

Compared with the prior art, the preferred technical solution of the present invention has at least the following advantages:

1. The invention solves the safety hazard brought by the side slip of the A-type leg in the prior art, avoids the occurrence of an accident, improves the stability of the whole vehicle, and improves the stress condition of the A-type leg.

2. The A-type leg provided by the invention can realize automatic adjustment of the leg span, smooth transition without impact, can meet the needs of various working conditions, and has stronger adaptability.

3. When the existing A-type legs are supported, in order to reduce the damage to the ground, it is necessary to carry the bedding with the vehicle, which is cumbersome to operate, labor-intensive, and low-efficiency. The present invention does not require a skid, structure. Compact, easy to operate, and more user-friendly, the working efficiency of the traveling machine (for example, the wrecker) of the present invention is greatly improved. DRAWINGS

The drawings described herein are intended to provide a further understanding of the present invention, and are intended to be a part of the invention, and the invention is not intended to be construed as limiting the invention. In the drawing:

1 is a schematic view showing a three-dimensional structure of an anti-skid foot device according to an embodiment of the present invention;

2 is a schematic view showing a process of setting a type A leg of a traveling machine of the non-slip foot device provided by the embodiment of the present invention from a retracted state to an extended state;

Figure 3 is a partial cross-sectional enlarged view showing the structure of the leg and the anti-slip foot device of Figure 2 in the area I;

4 is a partial cross-sectional view showing a locker of an anti-skid foot device according to an embodiment of the present invention; 5 is a perspective schematic view of a base of an anti-skid foot device according to an embodiment of the present invention;

6 is a schematic cross-sectional view showing a base of a non-slip foot device according to an embodiment of the present invention;

7 is a schematic longitudinal cross-sectional view of a base of an anti-skid foot device according to an embodiment of the present invention;

8 is a schematic view showing the three-dimensional structure of a base of an anti-skid foot device according to an embodiment of the present invention;

Figure 9 is a top plan view showing the A-type leg of the traveling machine provided with the anti-slip foot device provided by the embodiment of the present invention in an extended state;

Figure 10 is a front elevational view showing the A-type leg of the traveling machine provided with the anti-slip foot device according to the embodiment of the present invention in a retracted state;

Figure 11 is a schematic view showing the three-dimensional structure of the A-type leg of the traveling machine provided with the anti-slip foot device according to the embodiment of the present invention in an extended state;

Figure 12 is a schematic view showing the process of automatically adjusting the span on the anti-skid foot device of the left telescopic leg of the A-type leg of the traveling machine provided with the anti-slip foot device provided by the embodiment of the present invention;

Figure 13 is a schematic view showing the structure of the anti-skid leg device when the left telescopic leg of the A-type leg of the traveling machine of the non-slip foot device provided by the embodiment of the present invention is in a retracted state;

Figure 14 is a side elevational view showing a traveling machine provided with an anti-skid foot device according to an embodiment of the present invention;

Figure 15 is a top plan view showing a traveling machine provided with an anti-skid foot device according to an embodiment of the present invention;

Fig. 16 is a rear elevational view showing a traveling machine provided with an anti-skid foot device according to an embodiment of the present invention.

Marked in the figure: 1, basic legs; 2, movable legs; 3, pin shaft; 4, pin shaft; Anti-skid foot device; 6, limit baffle; 11, pin; 12, pin; 15, pin; 16, pin; 18, pin; 7, slider; 8, first link; Variable amplitude cylinder; 10, second connecting rod; 13, telescopic cylinder; 14, basic leg; 17, baffle; 50, chassis; 51, A-type leg; 52, winch mechanism; 53, slewing mechanism; 55; rear leg; 56, arm; 57, front axle; 58, rear axle; 60, guide groove; 61, base; 62, foot plate; 63, locker; 631, grasping parts; 633, elastic member; 634, sleeve; 635, fixing plate; 64, wear pad; 65, handle; 66, screw; 67, screw; 68, screw; 69, track groove; Limit hole; 71, guide plate; 72, anti-off plate. detailed description

The technical solutions (including preferred technical solutions) of the present invention will be further described in detail below with reference to the accompanying drawings in Figs. 1 to 16 and some alternative embodiments of the present invention. It should be noted that: any technical feature in the embodiment (the technical features may be separated by any punctuation such as a comma, a period, a comma or a semicolon), and any technical solution is a plurality of optional technical features or One or more of the optional technical solutions, in order to describe the need for succinctness, all the alternative technical features and alternative technical solutions of the present invention cannot be exhausted in this document, and the implementation of each technical feature is not convenient. It is emphasized that it is one of the various embodiments that are optional, so those skilled in the art should know that any technical features and any technical solutions in this embodiment do not limit the scope of protection of the present invention, and the scope of protection of the present invention should include Those skilled in the art will not be able to devise any alternative technical solutions that can be conceived by creative labor.

The embodiment of the invention provides a walking device capable of preventing the legs from slipping, having small deformation during the leg operation, uniformly distributing the legs, and not easily causing damage to the ground, and setting the anti-slip device. mechanical.

The technical solutions provided by the present invention are described in more detail below with reference to FIG. 1 to FIG. 16 , and any technical means provided by the present invention is replaced or the present invention is proposed. The technical solutions obtained by combining two or more technical means with each other should be within the protection scope of the present invention.

As shown in FIG. 1 to FIG. 16 , the anti-skid foot device 5 according to the embodiment of the present invention includes a base (preferably a chute base provided with a chute) 61, a leg (preferably a leg plate 62 shown in FIG. 1), The locker 63 and the slide rail structure, wherein:

The slide rail structure is disposed between the leg and the base 61, and the leg can slide on the base 61 in a predetermined direction (the predetermined direction can include both the forward direction and the reverse direction) through the slide rail structure. The tightener is disposed on the base 61 and the legs. When the legs are slid in the predetermined direction on the base 61 by the slide rail structure to the predetermined locking position, the locker 63 can lock the legs to the base 61.

The leg can dry the force on the leg connected thereto by sliding the slide rail structure in the predetermined direction on the base 61, thereby automatically adjusting the span of the leg, and when the leg slides to a predetermined locking position, the locker 63 locks the foot while also locking the leg.

The sliding rail structure can be implemented in various forms, and the preferred embodiments provided by the present invention are described in detail below, but the preferred embodiments do not constitute a limitation of the scope of the present invention.

In this embodiment, the leg is preferably a plate-shaped leg plate 62. The slide rail structure includes two guide plates 71 fixed to the base 61. The two guide plates 71 and the base 61 are oppositely disposed. Two guiding grooves 60, two opposite edges of the bottom plate 62 are respectively embedded in the two guiding grooves 60, and the longitudinal directions of the two guiding grooves 60 are consistent with the predetermined direction.

In this embodiment, a ball, a roller or the like may be added between the leg plate 62 and the base 61 or the guide groove 60, or a structure such as a long hole or an oil guiding groove may be added in the base 61 or the guide groove 60 to reduce the sliding of the leg plate 62. Friction during the process.

As another embodiment of the slide rail structure or the embodiment adopted at the same time as the slide rail structure, the slide rail structure in this embodiment may include a rail groove 69 disposed on the base 6 and a guide member fixed to the bottom of the leg tray 62. , the guide is embedded in the track slot The inside of 69 can slide along the longitudinal direction of the track groove 69, and the longitudinal direction of the track groove 69 coincides with the predetermined direction.

Of course, it is also within the scope of the present invention to provide the track groove 69 on the leg plate 62, the technical solution in which the guide member is disposed on the base 61, and the configuration in which the structure of the leg plate 62 is other shapes.

In this embodiment, the locker 63 includes a limiting post 632, a resilient structure, and a limiting hole 70 disposed on the base 61. The axial direction of the limiting post 632 is perpendicular to the direction in which the legs slide. The elastic structure is disposed between the legs and the limiting posts 632. When the leg slides in the predetermined direction on the base 61 by the slide rail structure to the predetermined locking position, the limit post 632 is embedded in the limiting hole 70 by the elastic force of the elastic structure. The resilient structure can provide a limit for the limit post 632 to engage the limit post 632 in the stop hole 70.

Of course, it is also within the scope of the present invention to provide a technical solution that does not provide a resilient structure (the limit post 632 is embedded in the limiting hole 70 by its own gravity) or a configuration that uses other structures instead of the elastic structure.

The elastic structure in this embodiment includes a sleeve 634, a resilient member 633, and a gripping member 631, wherein: the resilient member 633 is preferably a spring that is sleeved on the embedded portion of the limiting post 632.

One end of the sleeve 634 is fixedly coupled to the leg, preferably one end of the sleeve 634 is welded to the fixing plate 635, and then the sleeve 634 and the fixing plate 635 are fixedly coupled to the leg by a screw 67 extending through the fixing plate 635. The other end of the sleeve 634 is provided with a detachment preventing edge which is preferably integral with the sleeve 634 and has an inner diameter smaller than the inner diameter of the sleeve 634.

The limiting post 632 includes an end portion and an embedding portion. The outer diameter of the end portion is larger than the embedding portion. The embedding portion is embedded in the sleeve 634 and the embedding portion extends out of the sleeve 634 and the portion of the anti-detaining edge is provided for gripping by a human hand. Grab the part 631. The gripping member 631 is preferably a tab or handle 65 that is connected to a portion of the embedding portion that extends out of the detachment preventing edge, Shown in the middle as a pull ring.

The resilient members 633 are disposed within the sleeve 634 and abut against the detachment prevention edges and the end portions, respectively.

The above structure has the advantage of convenient disassembly. When the operator pulls the pull ring, the limit post 632 can be pulled out of the limit hole 70, thereby unlocking the lock by the locker 63.

Of course, the technical solution of using other elastic members instead of springs is also within the protection scope of the present invention.

In this embodiment, the anti-skid foot device 5 further includes at least one of a retaining plate 72, a wear pad 64 (preferably a rubber block) and a limiting member (preferably a screw 66), preferably three of the embodiments. The anti-skid foot device 5 provided by the example includes, wherein: the retaining plate 72 is fixedly coupled to the edge of the base 61, and the longitudinal direction of the retaining plate 72 is perpendicular to the direction in which the legs slide.

When the legs are slid in the predetermined direction on the base 61 by the slide rail structure to the predetermined locking position, the legs abut against the retaining plate 72.

The retaining plate 72 not only prevents the legs from coming out of the base 61 in the sliding direction thereof, but also prevents dust or dirt from being embedded in the base 61, thereby damaging the slide rail structure.

Of course, the technical solution of manufacturing the wear pad 64 using other materials is also within the scope of the present invention.

The number of the wear pads 64 (preferably rubber pads) in the embodiment is preferably at least two, and are distributed on the bottom surface of the base 61 and fixedly connected to the bottom surface of the base 61. The fixed connection is preferably by screws 68. achieve.

The wear pad 64 enhances the slip resistance of the base 61 and reduces the pressure that the base 61 can withstand.

In this embodiment, the limiting member is fixedly connected with the base 61, and the leg and the limiting member are slid in the predetermined direction on the base 61 by the sliding rail structure to the predetermined stowed position. Close to each other. The stop is preferably realized by a screw 66. The limiting member can prevent the leg from being released from the base 61. In this embodiment, the direction in which the legs slide toward the predetermined locking position is opposite to the direction in which the legs slide toward the predetermined stowed position, but: the direction of sliding of the legs can be understood as predetermined regardless of whether the legs are sliding forward or backward. direction.

In the present embodiment, a handle 65 is also attached to the retaining plate 72. The relative position of the base 61 to the legs can be changed by the handle 65, and the legs can be brought to a predetermined stowed position by pulling the base 61 in the direction in which the legs slide.

Of course, the technical solution of not providing the handle 65 or using the handle and the pull ring instead of the handle 65 is also within the scope of the present invention.

As shown in FIG. 1 to FIG. 16 , the traveling machine provided by the embodiment of the present invention includes a fixing frame, an A-type leg 51, a telescopic power mechanism, and an anti-skid foot device 5 provided by any technical solution of the embodiment of the present invention, wherein: The fixing frame is preferably fixedly connected to the chassis of the traveling machine or is a unitary structure, so the fixing frame in this example may also be referred to as a chassis fixing frame.

In the figure: (X is the A-type leg swing angle, S is the A-type leg lateral span, S1 is the A-type leg upper hinge spacing, A, B is the front leg of the walking machine supporting the location, C, D Support the location for the rear legs of the walking machine.

The A-type leg 51 includes a left telescopic leg and a right telescopic leg, and the left telescopic leg and the right telescopic leg each include a base leg that is hinged to the holder and a movable leg that is slidably coupled to the base leg. The figure shows: the basic leg 1 of the left telescopic leg and the active leg 2, the basic leg of the right telescopic leg 14 .

The telescopic power mechanism is disposed between the movable leg and the fixed frame of the left telescopic leg and the right telescopic leg, and the telescopic power mechanism can drive the movable leg to rotate relative to the fixed frame, and is basically connected with the movable leg. The legs are stretched out or retracted.

The legs of the anti-slip foot device 5 are hinged to the bottom of the movable leg 2. During the sliding process of the foot on the base 61, the leg span can be automatically adjusted, and the transition is smooth and shock-free, and the locker 63 can better position the leg and the leg connected thereto, thereby avoiding the side slip phenomenon. occur.

In this embodiment, each of the left telescopic leg and the right telescopic leg further includes at least one of a link mechanism, a limit baffle 6 and a slider 7, preferably three left telescopic legs and right telescopic Each of the legs includes, among which:

The linkage mechanism includes a first link (preferably a long link) 8 and a second link (preferably a short link) 10.

A telescopic power mechanism is disposed between each of the left telescopic leg and the right telescopic leg and the fixed frame, and the telescopic power mechanism includes a telescopic cylinder (or a vertical telescopic cylinder) 13 and a variable amplitude cylinder 9.

One of the cylinder barrel and the piston rod of the telescopic cylinder 13 is connected to the fixed frame, and the cylinder of the expansion cylinder 13 and the piston rod are connected to the movable leg 2 .

One end of each of the first link 8 and the second link 10 is hinged to one of the cylinder and the piston rod of the variator cylinder 9.

The other end of the first link 8 is hinged to the base leg 1.

The cylinder of the varietal cylinder 9 and the piston rod of the other and the other end of the second link 10 are respectively hinged at different positions of the fixed frame, and the position of the variator cylinder 9 is between the first link 8 and the second Between the links 10.

In the embodiment, the basic leg 1 of each of the left telescopic leg and the right telescopic leg is fixed with a limiting baffle 6 , and the bottom of the limiting baffle 6 is provided with a concave portion, and the top of the leg is fixed outside. The convex portion (the convex portion is preferably a triangular plate shape), and the telescopic power mechanism can move the movable leg 2 and the leg to a position where the convex portion is fitted into the concave portion.

When the A-shaped leg 51 is in the retracted state, the convex portion of the leg is embedded in the concave portion of the bottom of the limiting baffle 6, thereby locking the leg and the entire anti-slip foot device 5, and avoiding the anti-slip foot device 5 Shake on the A-shaped leg 51. In this embodiment, the slider 7 is disposed between the basic leg and the movable leg of the left telescopic leg and the right telescopic leg, and the basic leg is slidably connected to the movable leg through the slider 7.

The slider 7 can reduce the friction between the base leg and the movable leg. The sliders are mounted on all four sides of the movable leg and the base leg, and the gap is adjustable. The slider 7 (material is nylon) is mounted on all sides to ensure that the gap between the movable leg and the basic arm is minimized, so that the structural member is subjected to a load when the movable leg is under load (including structural deformation and stress concentration). , increase the force area of the structural member, reduce the stress, etc.).

Of course, it is also within the scope of the present invention to apply the anti-slip foot device 5 of the present invention to the A-type leg 51 or other leg or machine other than the traveling machine.

In the embodiment, the A-type leg comprises two parts, which are bilaterally symmetrical. Taking the left telescopic leg as an example, it comprises a basic leg 1 connected to the chassis 50 and deflectable about the pin 18, one of which can be in the basic leg 1. The telescopic movable leg 2 is coupled by a telescopic cylinder 13 , and the cylinder and the piston rod of the telescopic cylinder 13 are respectively fixed at a fixed point a of the upper leg and a fixed point c of the lower end of the movable leg, and the movable leg 2 is installed between the base leg 1 and the base leg 1 The slider 7 has a good force performance when the movable leg is stretched and retracted; the lower end fixed point d of the movable leg 2 is hinged by the pin 4 to the anti-skid foot device 5, and the swing of the basic leg is driven by the luffing cylinder 9.

The slewing cylinder 9 cylinder (or the lower end of the cylinder) is hinged to the chassis 50 at a point f, the piston rod of the slewing cylinder (or the upper end of the cylinder) and the first link (preferably a long link). The second link (preferably a short link) 10 is hinged at a point e, the other end of the first link 8 is hinged to the base leg 1 at a point b, and the other end of the second link 10 is hinged to the chassis holder to form a quadruple connection. The lever mechanism realizes the swing angle of the basic leg 1 (X.

Working principle: When reaching the working position, firstly supply the oil source through the hydraulic pump of the traveling machine, supply oil to the variable amplitude cylinder 9, drive the four-bar linkage mechanism to expand the basic leg 1 of the left telescopic leg, and the amplitude of the amplitude is 0. ~ oc, left basic leg, right basic leg The distance between the hinge points is S1, and the distance from the upper hinge point to the ground before the legs are unfolded is L. Then, the hydraulic pump of the traveling machine supplies oil to the telescopic cylinder 13. At this time, the movable leg 2 telescopically supports the ground and lifts the traveling machine to a certain height. The load of the walking machine is supported by the legs. During the lifting process, the ordinary A-type legs will produce lateral slip, and the slip amount is t=(S-Sl)/2 -tan α . In this way, the performance of the movable leg during the supporting process is very poor, and the impact load on the whole vehicle is large, which directly affects the stability of the whole vehicle. In severe cases, it will lead to a safety accident, and the side slip is also destructive to the road surface; The anti-slip A-leg is equipped with an anti-skid foot device 5 to prevent the leg from slipping. After the movable leg 2 supports the ground, the telescopic cylinder 13 continues to expand and contract, and the anti-skid foot device 5 automatically adjusts according to the lifting height. The span of the legs, the smooth transition of the whole process, no impact on the whole vehicle, to ensure the stability and safety of the whole vehicle.

The traveling machine provided by the embodiment of the present invention is preferably a wrecker, and the traveling machine comprises a chassis 50, a hoisting mechanism 52, a slewing mechanism 53, a sling 54 and a lifting mechanism 56. The chassis 50 includes at least one front axle 57 and at least one rear The shaft 58, the hoisting mechanism 52, the slewing mechanism 53, the boom 54, and the lifting mechanism 56 are all mounted on the chassis 50, the hoisting mechanism 52 is coupled to the upper side of the slewing mechanism 53, and the sling 54 is disposed at the rear of the slewing mechanism 53, the chassis 50 There are four telescopic legs on the top, and two or more of the four legs can be designed with A-type legs 51.

When the wrecker is working, the legs are fully or partially unfolded under the push of the slewing cylinder 9 and the telescopic cylinder 13 and extend beyond the edge of the chassis 50; when the wrecker is in the process of driving, the legs are all retracted, The width is not over the width of the car.

Working principle: When the wrecker arrives at the working place, the leg is extended to the corresponding position by the corresponding unfolding mechanism, the oil source is supplied by the hydraulic pump, and the oil is supplied to the slewing cylinder 9, and the basic leg of the left telescopic leg is 1. The basic leg 14 of the right telescopic leg is swiveled to the designated position by the luffing cylinder 9, and then the oil is supplied to the telescopic cylinder 13, the movable leg 2 is extended, and the anti-skid foot device 5 adjusts the span by itself, and the chassis 50 is adjusted. Supported, formed a stable support, the wrecker began to work accordingly; after the wrecking operation was completed, the legs were made Correspondingly, the base leg 1 of the left telescopic leg and the limit baffle 6 on the base leg 14 of the right telescopic leg fix the anti-slip foot device.

Operation mode: The above-mentioned walking machine, that is, the wrecker provided by the present invention, before extending the A-shaped leg 51, the operator first pulls the base 61 to the outermost side, and then supports the A-shaped leg 51, in the process of supporting the foot plate 62 moves outward along the base 61, automatically adjusting the leg span until the leg is fully extended. At this time, the locker 63 automatically locks the leg plate 62 and the base 61; when the wrecker operation is completed, the change The range cylinder 9 and the telescopic cylinder 13 are retracted, and the limit baffle 6 on the basic arm fixes the anti-skid foot device 5, and the sway of the leg plate 62 is restricted during the running of the whole vehicle to improve driving safety. The tamping vehicle of the present invention can match the number of legs and the installation manner to meet the specific construction and operation requirements. Therefore, the wrecker of the present invention has wide adaptability and versatility.

Any of the above-disclosed embodiments of the present invention, unless otherwise stated, are intended to be a numerical range that is a preferred range of values. Any person skilled in the art will understand that the preferred numerical range is only Among the many implementable values, the technical effects are obvious or representative. The present invention is intended to be illustrative of the technical solutions of the present invention, and the numerical values recited above should not be construed as limiting the scope of the invention.

In the meantime, if the above-mentioned invention discloses or relates to components or structural members that are fixedly connected to each other, unless otherwise stated, a fixed connection can be understood as: detachably fixing the connection (for example, using bolts or screws), Understood as: non-removable fixed connections (eg riveting, welding), of course, the fixed connection to each other can also be replaced by a one-piece structure (for example, manufactured by casting, forging or injection molding) (except for the integral forming process) ).

In addition, in any of the above-disclosed embodiments of the present invention, if there is a term for indicating a positional relationship or a shape, the applied is used to indicate a positional relationship or shape. The term is used to include a state or shape that is similar, similar, or approximate, unless otherwise stated. Any of the components provided by the present invention may be assembled from a plurality of separate components or may be a separate component manufactured by an integral forming process.

It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not to be construed as limiting thereof; although the present invention will be described in detail with reference to the preferred embodiments, those skilled in the art should understand that The invention is not limited to the spirit of the technical solutions of the present invention, and should be included in the scope of the technical solutions claimed in the present invention.

Claims

An anti-skid foot device, comprising: a base, a leg, a locker, and a slide rail structure, wherein:

The anti-skid foot device according to claim 1, wherein the leg is a leg plate having a bottom plate shape, and the slide rail structure comprises two guide plates fixed at positions opposite to the base, two Two guiding grooves are formed between the guiding plate and the base, and two opposite edges of the bottom of the supporting plate are respectively embedded in the two guiding grooves, and the length of the two guiding grooves The direction coincides with the predetermined direction.

The anti-skid foot device according to claim 1 or 2, wherein the slide rail structure comprises a track groove disposed on the base and a guide fixed to the bottom of the leg plate, the guide The piece is embedded in the track groove and slidable along the length direction of the track groove, and the length direction of the track groove is consistent with the predetermined direction.

The anti-slip foot device according to claim 1, wherein the locker comprises a limiting post, an elastic structure and a limiting hole disposed on the base, wherein:

The axial direction of the limiting post is perpendicular to the direction in which the leg slides; the elastic structure is disposed between the leg and the limiting post; the leg passes through the sliding rail structure at the base When the upper slide is slid to the predetermined locking position in the predetermined direction, the limit post is elastically stretched in the elastic structure The bottom hole is embedded in the hole.

5. The anti-skid foot device according to claim 4, wherein the elastic structure comprises a sleeve, an elastic member, and a gripping member, wherein

The anti-slip foot device according to claim 5, wherein the elastic member is a spring sleeved on the embedded portion of the limiting post, and the grasping member is the embedded portion A pull ring or handle that extends out of the sleeve and the portion of the detachment preventing edge.

The anti-skid foot device according to claim 1, wherein the anti-skid foot device further comprises at least one of a retaining plate, a wear pad and a limiting member, wherein:

The retaining plate is fixedly connected to the edge of the base, and the length direction of the retaining plate is perpendicular to the direction in which the leg slides;

When the leg is slid on the base in the predetermined direction by the sliding rail structure to a predetermined locking position, the leg abuts against the anti-off plate;

The limiting member is fixedly connected to the base, and when the leg is slid in the predetermined direction on the base by the sliding rail structure to a predetermined stowed position, The leg abuts the limiting member.

The anti-skid foot device according to claim 7, wherein a handle is further connected to the anti-off plate.

A traveling machine, comprising: a fixing frame, an A-type leg, a telescopic power mechanism, and the anti-skid foot device according to any one of claims 1 to 8, wherein: the A-type leg includes a left telescopic type a leg and a right telescopic leg, each of the left telescopic leg and the right telescopic leg includes a base leg hingedly coupled to the holder and a movable leg slidably coupled to the base leg;

The leg of the anti-slip foot device is hinged to the bottom of the movable leg.

The traveling machine according to claim 9, wherein each of the left telescopic leg and the right telescopic leg further comprises at least one of a link mechanism, a limit baffle and a slider. among them:

The link mechanism includes a first link and a second link;

The telescopic power mechanism is disposed between each of the left telescopic leg and the right telescopic leg and the fixed frame, and the telescopic power mechanism includes a telescopic cylinder and a variable amplitude cylinder;

One of a cylinder barrel and a piston rod of the telescopic cylinder is connected to the fixing frame, and a cylinder of the telescopic cylinder and a piston rod are connected to the movable leg; the first connecting rod and the One end of each of the second connecting rods is hinged with one of the cylinder and the piston rod of the variable amplitude cylinder;

The other end of the first link is hinged to the base leg;

The cylinder of the luffing cylinder and the other end of the piston rod and the other end of the second link are respectively hinged at different positions of the fixing frame, and the variable amplitude a position of the cylinder between the first link and the second link; the base leg of each of the left telescopic leg and the right telescopic leg is fixed to the limit a baffle, and a bottom of the limiting baffle is provided with a concave portion, a top portion of the leg is fixed with a convex portion, and the telescopic power mechanism can drive the movable leg and the leg to move to a position where the convex portion is embedded in the concave portion;