Chassis limiting device, construction machinery chassis and construction machinery

Abstract

The present invention relates to the field of engineering machinery, and discloses a chassis limiting device, an engineering machinery chassis, and engineering machinery. The chassis limiting device includes a main connecting member, a first limiting member, and a second limiting member. The main connecting member is used to be fixedly connected to the chassis body of the chassis; the first limiting member and the second limiting member are respectively used to be fixedly connected to the brackets on both sides of the chassis body in the transverse direction. The first limiting member and the second limiting member are relatively arranged on both sides of the main connecting member in a first direction. The first limiting member and the second limiting member are respectively movably connected to the main connecting member so as to be able to move independently or synchronously relative to the main connecting member along the first direction. The chassis limiting device of the present invention supports and limits the brackets on both sides of the chassis body in the transverse direction, so that the brackets on both sides of the chassis body in the transverse direction of the chassis body can remain parallel in the transverse direction of the chassis body during relative movement, thereby effectively improving the reliability of the engineering machinery chassis.

Description

Technical Field

[0001] The present invention belongs to the field of engineering machinery, and in particular, relates to a chassis limiting device, a chassis and engineering machinery. Background Art

[0002] Existing engineering machinery chassis, such as crawler engineering machinery chassis, generally include a chassis body and brackets arranged on both sides of the chassis body. In order to enable the engineering machinery chassis to adapt to different working environments, a telescopic drive mechanism is respectively provided between the chassis body and the brackets on both sides. Driven by the telescopic drive mechanism, the brackets on both sides can respectively move relative to the chassis body along the lateral direction of the chassis body. In this way, the width of the engineering machinery chassis is adjustable, and it can move in a relatively narrow space.

[0003] However, during the width adjustment process of the existing engineering machinery chassis, the position of one side of the bracket is easily offset, resulting in the brackets on both sides being non-parallel in the horizontal direction of the chassis body. This situation may cause the engineering machinery using the engineering machinery chassis to malfunction and be unable to drive normally. Summary of the Invention

[0004] In response to the above-mentioned deficiencies or defects in the prior art, the present invention provides a chassis limiting device, an engineering machinery chassis and an engineering machinery, aiming to solve the technical problem that during the width adjustment process of the existing engineering machinery chassis, the brackets on both sides are easily not parallel in the lateral direction of the chassis body, resulting in the engineering machinery using the engineering machinery chassis malfunctioning and being unable to drive normally.

[0005] To achieve the above objectives, the present invention provides a chassis limiting device, which includes:

[0006] A main body connector, used for fixed connection with the chassis main body of the chassis;

[0007] The first limit member and the second limit member are respectively used to be fixedly connected to the brackets on both sides of the chassis body in the horizontal direction. The first limit member and the second limit member are relatively arranged on both sides of the main connecting member in the first direction. The first limit member and the second limit member are respectively movably connected to the main connecting member so as to be able to move independently or synchronously relative to the main connecting member along the first direction.

[0008] Optionally, the first limiting member includes a first slide rail extending along a second direction perpendicular to the first direction, the second limiting member includes a second slide rail extending along the second direction, and the main connecting member includes a third slide rail and a fourth slide rail extending along the second direction and spaced apart along the first direction, wherein the third slide rail is disposed adjacent to the first slide rail, and the fourth slide rail is disposed adjacent to the second slide rail;

[0009] The chassis limiting device also includes:

[0010] a first connecting rod and a second connecting rod, wherein the first end and the second end of the first connecting rod are connected to the third slide rail and the first slide rail, respectively, and can slide along the third slide rail and the first slide rail, respectively; the first end and the second end of the second connecting rod are connected to the fourth slide rail and the second slide rail, respectively, and can slide along the fourth slide rail and the second slide rail, respectively; a first angle is formed between the first connecting rod and the second connecting rod;

[0011] A synchronous connecting plate spans the third slide rail and the fourth slide rail, and is respectively connected to the first end of the first connecting rod and the first end of the second connecting rod, so that the first end of the first connecting rod and the first end of the second connecting rod slide synchronously, and the synchronous connecting plate can be locked on the third slide rail and the fourth slide rail.

[0012] Optionally, the chassis limiting device further includes a third link and a fourth link, the first end and the second end of the third link are respectively connected to the third slide rail and the first slide rail, and can slide along the third slide rail and the first slide rail respectively, the first end and the second end of the fourth link are respectively connected to the fourth slide rail and the second slide rail, and can slide along the fourth slide rail and the second slide rail respectively, a second angle is formed between the third link and the fourth link, and the second angle and the first angle are opposite to each other in the second direction,

[0013] The synchronous connecting plate is also connected to the first ends of the third connecting rod and the fourth connecting rod respectively, so that the first end of the first connecting rod, the first end of the second connecting rod, the first end of the third connecting rod and the first end of the fourth connecting rod can slide synchronously.

[0014] The second end of the third connecting rod can be locked on the first sliding rail, and the second end of the fourth connecting rod can be locked on the second sliding rail.

[0015] Optionally, the first end and the second end of the first connecting rod are respectively slidably hinged in the track groove of the third slide rail and the track groove of the first slide rail; the first end and the second end of the second connecting rod are respectively slidably hinged in the track groove of the fourth slide rail and the track groove of the second slide rail; the first end and the second end of the third connecting rod are respectively slidably hinged in the track groove of the third slide rail and the track groove of the first slide rail; the first end and the second end of the fourth connecting rod are respectively slidably hinged in the track groove of the fourth slide rail and the track groove of the second slide rail.

[0016] Optionally, the synchronous connecting plate is provided with a first set of holes, a second set of holes, a third set of holes and a fourth set of holes that are spaced apart from each other, and the first set of holes, the second set of holes, the third set of holes and the fourth set of holes are respectively gap-fitted on the hinge shaft on the first end of the first connecting rod, the hinge shaft on the first end of the second connecting rod, the hinge shaft on the first end of the third connecting rod and the hinge shaft on the first end of the fourth connecting rod.

[0017] Optionally, a locking fixture is fixedly connected between the third slide rail and the fourth slide rail, and the synchronous connecting plate can be detachably fixedly connected to the locking fixture via a first fastener.

[0018] Optionally, a first locking plate is sleeved in the hinge shaft gap on the second end of the third connecting rod, and the first locking plate can be detachably fixedly connected to the first slide rail via a second fastener;

[0019] A second locking plate is sleeved in the hinge shaft gap on the second end of the fourth connecting rod, and the second locking plate can be detachably fixedly connected to the second slide rail through a third fastener.

[0020] Optionally, the first end and the second end of the first connecting rod are respectively provided with a first roller, and the two first rollers are respectively and correspondingly arranged in the track groove of the third slide rail and the track groove of the first slide rail; the first end and the second end of the second connecting rod are respectively provided with a second roller, and the two second rollers are respectively and correspondingly arranged in the track groove of the fourth slide rail and the track groove of the second slide rail; the first end and the second end of the third connecting rod are respectively provided with a third roller, and the two third rollers are respectively and correspondingly arranged in the track groove of the third slide rail and the track groove of the first slide rail; the first end and the second end of the fourth connecting rod are respectively provided with a fourth roller, and the two fourth rollers are respectively and correspondingly arranged in the track groove of the fourth slide rail and the track groove of the second slide rail.

[0021] Optionally, the first end and the second end of the first connecting rod are respectively hinged to a first slider, and the two first sliders are respectively slidably provided in the track groove of the third slide rail and the track groove of the first slide rail; the first end and the second end of the second connecting rod are respectively hinged to a second slider, and the two second sliders are respectively slidably provided in the track groove of the fourth slide rail and the track groove of the second slide rail; the first end and the second end of the third connecting rod are respectively hinged to a third slider, and the two third sliders are respectively slidably provided in the track groove of the third slide rail and the track groove of the first slide rail; the first end and the second end of the fourth connecting rod are respectively hinged to a fourth slider, and the two fourth sliders are respectively slidably provided in the track groove of the fourth slide rail and the track groove of the second slide rail.

[0022] The present invention further provides an engineering machinery chassis, comprising:

[0023] Chassis body;

[0024] Two brackets, each of which is connected to two sides of the chassis body through a telescopic drive mechanism; and

[0025] In the above-mentioned chassis limiting device, the main connecting member is fixedly connected to the chassis main body, and the first limiting member and the second limiting member are fixedly connected to the two brackets respectively.

[0026] The present invention also provides an engineering machine, which includes the above-mentioned engineering machine chassis.

[0027] In the chassis limiting device of the present invention, the first limiting member and the second limiting member can respectively support and limit the brackets on the lateral sides of the chassis main body, so that the brackets on the lateral sides of the chassis main body can remain parallel in the lateral direction of the chassis main body during relative movement, effectively improving the reliability of the engineering machinery chassis. Moreover, the first limiting member and the second limiting member can move individually or synchronously relative to the main connecting member along the first direction. Such an arrangement enables the limiting device to be applicable to different width adjustment modes of single-sided bracket movement adjustment, double-sided bracket synchronous movement adjustment and double-sided bracket asynchronous movement adjustment of the engineering machinery chassis, and has good applicability.

[0028] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following detailed description, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0030] Figure 1 Schematic diagram of the structure of a chassis limiting device in one embodiment of the present invention;

[0031] Figure 2 This is a structural schematic diagram of an engineering machinery chassis in one embodiment of the present invention, in which the synchronous connecting plate is in a locked state and the second ends of the third connecting rod and the fourth connecting rod are in an unlocked state;

[0032] Figure 3 for Figure 2 Schematic diagram of the partial structure of the engineering machinery chassis with the synchronous connecting plate removed;

[0033] Figure 4 for Figure 2 A structural diagram of an engineering machinery chassis in which the synchronous connecting plate is in an unlocked state and the second ends of the third link and the fourth link are in a locked state.

[0034] Description of reference numerals:

[0035] 1 Chassis body 8 Second connecting rod

[0036] 2 Bracket 9 Third connecting rod

[0037] 3 First slide rail 10 Fourth connecting rod

[0038] 4 Second slide rail 11 Synchronous connecting plate

[0039] 5 Third slide rail 12 First locking plate

[0040] 6 Fourth slide rail 13 Second locking plate

[0041] 7 First connecting rod 14 Locking fixture DETAILED DESCRIPTION

[0042] The following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0043] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.

[0044] In the present invention, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used to describe the relative positions of components in the directions shown in the drawings or in the vertical, perpendicular or gravity directions.

[0045] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0046] The present invention first provides a chassis limiting device.

[0047] In one embodiment, referring to the attached Figure 1 To the attached Figure 4 As shown, the chassis limiting device includes a main connecting member, a first limiting member and a second limiting member. The main connecting member is used to be fixedly connected to the chassis body 1 of the chassis; the first limiting member and the second limiting member are respectively used to be fixedly connected to the brackets 2 on both sides of the chassis body 1 in the horizontal direction. The first limiting member and the second limiting member are relatively arranged on both sides of the main connecting member in the first direction. The first limiting member and the second limiting member are respectively movably connected to the main connecting member so as to be able to move independently or synchronously relative to the main connecting member along the first direction.

[0048] It can be understood that in the chassis limiting device of this embodiment, the first limiting member and the second limiting member can respectively support and limit the brackets 2 on the lateral sides of the chassis main body 1, so that the brackets 2 on the lateral sides of the chassis main body 1 can remain parallel in the lateral direction of the chassis main body 1 during relative movement, effectively improving the reliability of the engineering machinery chassis. Moreover, the first limiting member and the second limiting member can move individually or synchronously relative to the main connecting member along the first direction. Such an arrangement enables the limiting device to be applicable to different width adjustment modes of single-sided bracket movement adjustment, double-sided bracket synchronous movement adjustment and double-sided bracket asynchronous movement adjustment of the engineering machinery chassis, and has good applicability.

[0049] In one embodiment, the first limiting member includes a first slide rail 3 extending in a second direction perpendicular to the first direction, the second limiting member includes a second slide rail 4 extending in the second direction, and the main connecting member includes a third slide rail 5 and a fourth slide rail 6 extending in the second direction and spaced apart in the first direction, wherein the third slide rail 5 is arranged adjacent to the first slide rail 3, and the fourth slide rail 6 is arranged adjacent to the second slide rail 4; the chassis limiting device also includes a first connecting rod 7, a second connecting rod 8 and a synchronous connecting plate 11, and the first end and the second end of the first connecting rod 7 are respectively connected to the third slide rail 5 and the first slide rail 3, And it can slide along the third slide rail 5 and the first slide rail 3 respectively. The first end and the second end of the second connecting rod 8 are respectively connected to the fourth slide rail 6 and the second slide rail 4, and can slide along the fourth slide rail 6 and the second slide rail 4 respectively. A first angle is formed between the first connecting rod 7 and the second connecting rod 8. The synchronous connecting plate 11 spans the third slide rail 5 and the fourth slide rail 6 and is respectively connected to the first end of the first connecting rod 7 and the first end of the second connecting rod 8, so that the first end of the first connecting rod 7 and the first end of the second connecting rod 8 slide synchronously. The synchronous connecting plate 11 can be locked on the third slide rail 5 and the fourth slide rail 6.

[0050] In this embodiment, in actual application, the third slide rail 5 and the fourth slide rail 6 are both fixedly connected to the chassis body 1 of the chassis, and the first slide rail 3 and the second slide rail 4 are respectively fixedly connected to the brackets 2 on the lateral sides of the chassis body 1. Through the support and limiting effect of the first connecting rod 7 and the second connecting rod 8, the first slide rail 3 and the second slide rail 4 can be maintained in a state where they are relatively arranged on both sides of the third slide rail 5 and the fourth slide rail 6, thereby supporting and limiting the brackets 2 on the lateral sides of the chassis body 1 through the first slide rail 3 and the second slide rail 4.

[0051] It can be understood that by arranging the synchronous connecting plate 11 to be lockable on the third slide rail 5 and the fourth slide rail 6 , the synchronous connecting plate 11 is arranged in such a manner that it has an unlocked state and a locked state.

[0052] In actual application, the synchronous connecting plate 11 is in an unlocked state, and the synchronous connecting plate 11 can make the first end of the first connecting rod 7 and the first end of the second connecting rod 8 slide synchronously, so that the first connecting rod 7 and the second connecting rod 8 can move synchronously. In this state, the limit device can be applied to the width adjustment mode of the double-sided bracket synchronous movement adjustment of the engineering machinery chassis. The synchronous connecting plate 11 is in a locked state, and the synchronous connecting plate 11 is locked on the third slide rail 5 and the fourth slide rail 6 and cannot move, so that the first end of the first connecting rod 7 and the first end of the second connecting rod 8 are locked and cannot slide. At this time, since the second end of the first connecting rod 7 and the second end of the second connecting rod 8 can slide separately, the first connecting rod 7 and the second connecting rod 8 can move separately. In this state, the limit device can be applied to the width adjustment mode of single-sided bracket movement adjustment and double-sided bracket asynchronous movement adjustment.

[0053] In one embodiment, referring to the attached Figure 1 To the attached Figure 4 As shown, the chassis limiting device also includes a third link 9 and a fourth link 10, the first end and the second end of the third link 9 are respectively connected to the third slide rail 5 and the first slide rail 3, and can slide along the third slide rail 5 and the first slide rail 3 respectively, the first end and the second end of the fourth link 10 are respectively connected to the fourth slide rail 6 and the second slide rail 4, and can slide along the fourth slide rail 6 and the second slide rail 4 respectively, a second angle is formed between the third link 9 and the fourth link 10, and the second angle and the first angle are opposite to each other in the second direction, and the synchronous connecting plate 11 is also respectively connected to the first end of the third link 9 and the fourth link 10, so that the first end of the first link 7, the first end of the second link 8, the first end of the third link 9 and the first end of the fourth link 10 can slide synchronously, the second end of the third link 9 can be locked on the first slide rail 3, and the second end of the fourth link 10 can be locked on the second slide rail 4.

[0054] It can be understood that the second angle formed between the third link 9 and the fourth link 10 is opposite to the first angle formed between the first link 7 and the second link 8, so as to avoid interference in the movement between the links; in this embodiment, by adding the third link 9 and the fourth link 10, the third link 9 and the first link 7 can simultaneously support and limit the first slide rail 3, and the fourth link 10 and the second link 8 can simultaneously support and limit the second slide rail 4, so that the stability and reliability of the structure can be effectively improved.

[0055] It can be understood that in this embodiment, the synchronous connecting plate 11 also has an unlocked state and a locked state, and the second end of the third connecting rod 9 and the second end of the fourth connecting rod 10 also have an unlocked state and a locked state.

[0056] In actual application, refer to the attached Figure 4 As shown, the synchronous connecting plate 11 is in an unlocked state, and the second end of the third link 9 and the second end of the fourth link 10 are respectively in a locked state. The synchronous connecting plate 11 can make the first end of the first link 7, the first end of the second link 8, the first end of the third link 9 and the first end of the fourth link 10 slide synchronously, so that the first link 7, the second link 8, the third link 9 and the fourth link 10 can move synchronously. In this state, the limit device can be applied to the width adjustment mode of the synchronous movement adjustment of the double-sided brackets of the engineering machinery chassis. Figure 2 As shown, the synchronous connecting plate 11 is in a locked state, and the second end of the third link 9 and the second end of the fourth link 10 are respectively in an unlocked state. The synchronous connecting plate 11 is locked on the third slide rail 5 and the fourth slide rail 6 and cannot move, so that the first end of the first link 7, the first end of the second link 8, the first end of the third link 9 and the first end of the fourth link 10 are locked. At this time, since the second end of the first link 7, the second end of the second link 8, the second end of the third link 9 and the second end of the fourth link 10 can slide respectively, the third link 9 and the first link 7 and the fourth link 10 and the second link can move separately. In this state, the limit device can be suitable for the width adjustment mode of single-sided bracket movement adjustment and double-sided bracket asynchronous movement adjustment.

[0057] In one embodiment, the first end and the second end of the first connecting rod 7 are respectively slidably hinged in the track groove of the third slide rail 5 and the track groove of the first slide rail 3. Specifically, the first end and the second end of the first connecting rod 7 are respectively fixedly connected to a hinge shaft, and the two hinge shafts are respectively rotatably disposed in the track groove of the third slide rail 5 and the track groove of the first slide rail 3 and can slide along the track groove of the third slide rail 5 and the track groove of the first slide rail 3 respectively.

[0058] The first end and the second end of the second connecting rod 8 are respectively slidably hinged in the track groove of the fourth slide rail 6 and the track groove of the second slide rail 4. Specifically, the first end and the second end of the second connecting rod 8 are respectively fixedly connected to a hinge shaft, and the two hinge shafts are respectively rotatably provided in the track groove of the fourth slide rail 6 and the track groove of the second slide rail 4 and can slide along the track groove of the fourth slide rail 6 and the track groove of the second slide rail 4 respectively.

[0059] The first end and the second end of the third connecting rod 9 are respectively slidably hinged in the track groove of the third slide rail 5 and the track groove of the first slide rail 3. Specifically, the first end and the second end of the third connecting rod 9 are respectively fixedly connected to a hinge shaft, and the two hinge shafts are respectively rotatably provided in the track groove of the third slide rail 5 and the track groove of the first slide rail 3 and can slide along the track groove of the third slide rail 5 and the track groove of the first slide rail 3 respectively.

[0060] The first end and the second end of the fourth connecting rod 10 are respectively slidably hinged in the track groove of the fourth slide rail 6 and the track groove of the second slide rail 4. Specifically, the first end and the second end of the fourth connecting rod 10 are respectively fixedly connected with a hinge shaft, and the two hinge shafts can respectively rotate in the track groove of the fourth slide rail 6 and the track groove of the second slide rail 4 and can slide along the track groove of the fourth slide rail 6 and the track groove of the second slide rail 4 respectively.

[0061] In one embodiment, the synchronous connecting plate 11 is provided with a first set of holes, a second set of holes, a third set of holes and a fourth set of holes that are spaced apart from each other. The first set of holes, the second set of holes, the third set of holes and the fourth set of holes are respectively gap-fitted on the hinge shaft on the first end of the first link 7, the hinge shaft on the first end of the second link 8, the hinge shaft on the first end of the third link 9 and the hinge shaft on the first end of the fourth link 10. With such a configuration, the synchronous connecting plate 11 can make the first end of the first link 7, the first end of the second link 8, the first end of the third link 9 and the first end of the fourth link 10 slide or lock synchronously without interfering with the rotation of each hinge shaft.

[0062] In one embodiment, a locking fixture 14 is fixedly connected between the third slide rail 5 and the fourth slide rail 6, and the synchronous connecting plate 11 can be detachably fixedly connected to the locking fixture 14 through a first fastener. In this way, the synchronous connecting plate 11 can be locked on the third slide rail 5 and the fourth slide rail 6.

[0063] Specifically, a plurality of first locking threaded holes are provided on the locking fixing member 14, and a plurality of second locking threaded holes corresponding to the plurality of first locking threaded holes are provided on the synchronous connecting plate 11. The first fastener can be provided in plurality and provided as a bolt, and the plurality of first fasteners can be threadedly connected to the opposing first locking threaded holes and the second locking threaded holes to achieve a fixed connection between the synchronous connecting plate 11 and the locking fixing member 14.

[0064] In one embodiment, a first locking plate 12 is provided in the gap of the hinge shaft on the second end of the third connecting rod 9, and the first locking plate 12 can be detachably fixedly connected to the first slide rail 3 by a second fastener. In this way, the second end of the third connecting rod 9 can be locked to the first slide rail 3. Specifically, a third locking threaded hole is provided at the end of the first slide rail 3 adjacent to the second end of the third connecting rod 9, and a fifth sleeve hole and a fourth locking threaded hole are provided in the first locking plate 12. The fifth sleeve hole is gap-mounted on the hinge shaft on the second end of the third connecting rod 9, and the second fastener is a bolt, and can be threaded through the opposite third locking threaded hole and fourth locking threaded hole to achieve a fixed connection between the first locking plate 12 and the first slide rail 3.

[0065] In this embodiment, a second locking plate 13 is provided in the gap of the hinge shaft on the second end of the fourth connecting rod 10, and the second locking plate 13 can be detachably fixedly connected to the second slide rail 4 through a third fastener. In this way, the second end of the fourth connecting rod 10 can be locked to the second slide rail 4. Specifically, a fifth locking threaded hole is provided at the end of the second slide rail 4 adjacent to the second end of the fourth connecting rod 10, and a sixth sleeve hole and a sixth locking threaded hole are provided in the second locking plate 13. The sixth sleeve hole is gap-sleeved on the hinge shaft on the second end of the fourth connecting rod 10, and the third fastener is a bolt, and can be threaded through the opposite fifth locking threaded hole and sixth locking threaded hole to achieve a fixed connection between the second locking plate 13 and the second slide rail 4.

[0066] In one embodiment, another connection method can be adopted between the connecting rod and the slide rail. For example, the first end and the second end of the first connecting rod 7 are respectively provided with a first roller, and the two first rollers are respectively and correspondingly arranged in the track groove of the third slide rail 5 and the track groove of the first slide rail 3; the first end and the second end of the second connecting rod 8 are respectively provided with a second roller, and the two second rollers are respectively and correspondingly arranged in the track groove of the fourth slide rail 6 and the track groove of the second slide rail 4; the first end and the second end of the third connecting rod 9 are respectively provided with a third roller, and the two third rollers are respectively and correspondingly arranged in the track groove of the third slide rail 5 and the track groove of the first slide rail 3; the first end and the second end of the fourth connecting rod 10 are respectively provided with a fourth roller, and the two fourth rollers are respectively and correspondingly arranged in the track groove of the fourth slide rail 6 and the track groove of the second slide rail 4.

[0067] In one embodiment, another connection method can be used between the connecting rod and the slide rail. For example, the first end and the second end of the first connecting rod 7 are respectively hinged with a first slider, and the two first sliders are respectively slidably disposed in the track groove of the third slide rail 5 and the track groove of the first slide rail 3; the first end and the second end of the second connecting rod 8 are respectively hinged with a second slider, and the two second sliders are respectively slidably disposed in the track groove of the fourth slide rail 6 and the track groove of the second slide rail 4; the first end and the second end of the third connecting rod 9 are respectively hinged with a third slider, and the two third sliders are respectively slidably disposed in the track groove of the third slide rail 5 and the track groove of the first slide rail 3; the first end and the second end of the fourth connecting rod 10 are respectively hinged with a fourth slider, and the two fourth sliders are respectively slidably disposed in the track groove of the fourth slide rail 6 and the track groove of the second slide rail 4.

[0068] The present invention also provides an engineering machinery chassis.

[0069] In one embodiment, the engineering machinery chassis includes a chassis body 1, two brackets 2 and the above-mentioned chassis limiting device; the two brackets 2 are respectively connected to the two sides of the chassis body 1 through a telescopic drive mechanism, the main connecting part of the chassis limiting device is fixedly connected to the chassis body 1, and the first limiting part and the second limiting part of the chassis limiting device are respectively fixedly connected to the two brackets 2.

[0070] The present invention also provides an engineering machine.

[0071] In one embodiment, a construction machine includes the above-mentioned construction machine chassis.

[0072] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0073] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0074] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A chassis limiting device, characterized in that: The chassis limiting device includes: A main body connector, used for fixedly connecting to a chassis main body (1) of the chassis; A first limiting member and a second limiting member are respectively used for fixed connection with the brackets (2) on both sides of the chassis body (1) in a lateral direction, the first limiting member and the second limiting member are relatively arranged on both sides of the main body connecting member in a first direction, and the first limiting member and the second limiting member are respectively movably connected to the main body connecting member so as to be able to move independently or synchronously relative to the main body connecting member along the first direction; The first limiting member includes a first slide rail (3) extending along a second direction perpendicular to the first direction, the second limiting member includes a second slide rail (4) extending along the second direction, and the main connecting member includes a third slide rail (5) and a fourth slide rail (6) extending along the second direction and arranged at intervals along the first direction, wherein the third slide rail (5) is arranged adjacent to the first slide rail (3), and the fourth slide rail (6) is arranged adjacent to the second slide rail (4); The chassis limiting device also includes a first connecting rod (7), a second connecting rod (8) and a synchronous connecting plate (11), wherein the first end and the second end of the first connecting rod (7) are respectively connected to the third slide rail (5) and the first slide rail (3), and can slide along the third slide rail (5) and the first slide rail (3), respectively, and the first end and the second end of the second connecting rod (8) are respectively connected to the fourth slide rail (6) and the second slide rail (4), and can slide along the fourth slide rail (6) and the second slide rail (4), respectively, and a first angle is formed between the first connecting rod (7) and the second connecting rod (8); the synchronous connecting plate (11) spans the third slide rail (5) and the fourth slide rail (6), and is respectively connected to the first end of the first connecting rod (7) and the first end of the second connecting rod (8), so that the first end of the first connecting rod (7) and the first end of the second connecting rod (8) slide synchronously, and the synchronous connecting plate (11) can be locked on the third slide rail (5) and the fourth slide rail (6); The chassis limiting device further comprises a third link (9) and a fourth link (10), wherein the first end and the second end of the third link (9) are respectively connected to the third slide rail (5) and the first slide rail (3), and can slide along the third slide rail (5) and the first slide rail (3), respectively; the first end and the second end of the fourth link (10) are respectively connected to the fourth slide rail (6) and the second slide rail (4), and can slide along the fourth slide rail (6) and the second slide rail (4), respectively; a third link (9) is formed between the third link (9) and the fourth link (10). The second angle and the first angle are opposite to each other in the second direction; the synchronous connecting plate (11) is also connected to the first end of the third connecting rod (9) and the first end of the fourth connecting rod (10), respectively, so that the first end of the first connecting rod (7), the first end of the second connecting rod (8), the first end of the third connecting rod (9) and the first end of the fourth connecting rod (10) can slide synchronously, and the second end of the third connecting rod (9) can be locked on the first slide rail (3), and the second end of the fourth connecting rod (10) can be locked on the second slide rail (4).

2. The chassis limiting device according to claim 1, characterized in that: The first end and the second end of the first connecting rod (7) are respectively slidably hinged in the track groove of the third slide rail (5) and the track groove of the first slide rail (3); the first end and the second end of the second connecting rod (8) are respectively slidably hinged in the track groove of the fourth slide rail (6) and the track groove of the second slide rail (4); the first end and the second end of the third connecting rod (9) are respectively slidably hinged in the track groove of the third slide rail (5) and the track groove of the first slide rail (3); the first end and the second end of the fourth connecting rod (10) are respectively slidably hinged in the track groove of the fourth slide rail (6) and the track groove of the second slide rail (4).

3. The chassis limiting device according to claim 2, characterized in that: The synchronous connecting plate (11) is provided with a first set of holes, a second set of holes, a third set of holes and a fourth set of holes which are spaced apart from each other. The first set of holes, the second set of holes, the third set of holes and the fourth set of holes are respectively spaced apart and sleeved on the hinge shaft on the first end of the first connecting rod (7), the hinge shaft on the first end of the second connecting rod (8), the hinge shaft on the first end of the third connecting rod (9) and the hinge shaft on the first end of the fourth connecting rod (10).

4. The chassis limiting device according to claim 3, characterized in that: A locking fixture (14) is fixedly connected between the third slide rail (5) and the fourth slide rail (6), and the synchronous connecting plate (11) can be detachably fixedly connected to the locking fixture (14) via a first fastener.

5. The chassis limiting device according to claim 2, characterized in that: A first locking plate (12) is provided in the hinge shaft clearance sleeve on the second end of the third connecting rod (9), and the first locking plate (12) can be detachably fixedly connected to the first slide rail (3) via a second fastener; A second locking plate (13) is provided in the hinge shaft clearance sleeve on the second end of the fourth connecting rod (10), and the second locking plate (13) can be detachably fixedly connected to the second slide rail (4) via a third fastener.

6. The chassis limiting device according to claim 1, characterized in that: The first end and the second end of the first connecting rod (7) are respectively provided with a first roller, and the two first rollers are respectively and correspondingly arranged in the track groove of the third slide rail (5) and the track groove of the first slide rail (3); the first end and the second end of the second connecting rod (8) are respectively provided with a second roller, and the two second rollers are respectively and correspondingly arranged in the track groove of the fourth slide rail (6) and the track groove of the second slide rail (4); the first end and the second end of the third connecting rod (9) are respectively provided with a third roller, and the two third rollers are respectively and correspondingly arranged in the track groove of the third slide rail (5) and the track groove of the first slide rail (3); the first end and the second end of the fourth connecting rod (10) are respectively provided with a fourth roller, and the two fourth rollers are respectively and correspondingly arranged in the track groove of the fourth slide rail (6) and the track groove of the second slide rail (4).

7. The chassis limiting device according to claim 1, characterized in that: The first end and the second end of the first connecting rod (7) are respectively hinged to a first slider, and the two first sliders are respectively slidably arranged in the track groove of the third slide rail (5) and the track groove of the first slide rail (3); the first end and the second end of the second connecting rod (8) are respectively hinged to a second slider, and the two second sliders are respectively slidably arranged in the track groove of the fourth slide rail (6) and the track groove of the second slide rail (4); the first end and the second end of the third connecting rod (9) are respectively hinged to a third slider, and the two third sliders are respectively slidably arranged in the track groove of the third slide rail (5) and the track groove of the first slide rail (3); the first end and the second end of the fourth connecting rod (10) are respectively hinged to a fourth slider, and the two fourth sliders are respectively slidably arranged in the track groove of the fourth slide rail (6) and the track groove of the second slide rail (4).

8. An engineering machinery chassis, characterized in that: The engineering machinery chassis comprises: Chassis body (1); Two brackets (2), the two brackets (2) being connected to both sides of the chassis body (1) respectively via telescopic drive mechanisms; and According to the chassis limiting device according to any one of claims 1 to 7, the main connecting member is fixedly connected to the chassis main body (1), and the first limiting member and the second limiting member are respectively fixedly connected to the two brackets (2).

9. An engineering machine, characterized in that: The construction machine comprises the construction machine chassis according to claim 8 .

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