A chassis and construction machinery

Abstract

Embodiments of the present invention provide a chassis and construction machinery, relating to the technical field of construction machinery. The chassis includes a frame, a positioning assembly, a driving member, a first bracket, and a second bracket. The positioning assembly is installed on the frame. The first bracket and the second bracket are respectively arranged on both sides of the frame and connected to the frame. The driving member is respectively connected to the first bracket and the second bracket. The positioning assembly is respectively connected to the first bracket and the second bracket. The driving member is used to drive the first bracket and the second bracket to move away from or close to each other. The positioning assembly is used to keep the distances between the first bracket and the frame and between the second bracket and the frame equal. In the embodiments of the present invention, the frame is prevented from moving back and forth during operation, ensuring the stability of the chassis during operation at any width.

Description

Technical Field

[0001] The present invention relates to the technical field of construction machinery, and more specifically, to a chassis and a construction machinery. Background Art

[0002] Generally, the working environment of construction machinery is relatively complex, and the operation is often restricted by the operating space, especially in narrow community streets or relatively special road surfaces. Therefore, the adjustable width of the excavator bottom is very important. At present, in the construction machinery market, there are already related products, which adopt a telescopic oil cylinder to connect between the left beam and the right beam of the chassis to achieve the width adjustment of the chassis. The disadvantage is that the main beam has no relative fixing effect on the left beam and the right beam, and can only play a guiding role. When the chassis width is not at the extreme width position, the main beam floats relative to the left and right beams and cannot operate safely. Summary of the Invention

[0003] The purpose of the present invention is to provide a chassis and a construction machinery, which can avoid the frame from moving back and forth during the working process and ensure the stability of the chassis when working at any width.

[0004] The embodiments of the present invention can be implemented as follows:

[0005] In a first aspect, an embodiment of the present invention provides a chassis, which includes a frame, a positioning component, a driving component, a first bracket and a second bracket. The positioning component is installed on the frame. The first bracket and the second bracket are respectively arranged on both sides of the frame and connected to the frame. The driving component is respectively connected to the first bracket and the second bracket, and the positioning component is respectively connected to the first bracket and the second bracket;

[0006] The driving component is used to drive the first bracket and the second bracket to move in a direction close to or away from each other;

[0007] The positioning component is used to keep the distances between the first bracket and the frame and between the second bracket and the frame equal.

[0008] In an optional embodiment of the present invention, the positioning component includes a fixing component, a first connecting rod and a second connecting rod. One end of the first connecting rod is rotatably connected to the fixing component, and the other end is rotatably connected to the first bracket. One end of the second connecting rod is rotatably connected to the fixing component, and the other end is rotatably connected to the second bracket. The fixing component is arranged on the frame.

[0009] In an alternative embodiment of the present invention, the fixing member includes a mounting portion and a sliding portion. The mounting portion is fixed to the vehicle frame, and a sliding groove is provided on the mounting portion. The sliding portion is disposed in the sliding groove and can slide along the sliding groove. The first link and the second link are rotatably connected to the sliding portion.

[0010] In an alternative embodiment of the present invention, the mounting portion is disposed on the central axis of the vehicle frame, and the sliding groove extends along the direction of the central axis of the vehicle frame.

[0011] In an alternative embodiment of the present invention, the fixing member further includes a first fixing plate and a second fixing plate. The first fixing plate and the second fixing plate are disposed on a side of the sliding portion close to the first link. The first fixing plate and the second fixing plate are spaced apart to form a fixing groove. One end of the first link close to the sliding portion extends into the fixing groove and is rotatably connected to the first fixing plate and the second fixing plate.

[0012] In an alternative embodiment of the present invention, the fixing member further includes a first connecting plate and a second connecting plate. The first connecting plate and the second connecting plate are disposed on a side of the sliding portion close to the second link. The first connecting plate and the second connecting plate are spaced apart to form a connecting groove. One end of the second link close to the sliding portion extends into the connecting groove and is rotatably connected to the first connecting plate and the second connecting plate.

[0013] In an alternative embodiment of the present invention, the sliding groove has an opening and a bottom wall disposed opposite to each other. The width of the bottom wall is greater than the width of the opening. The sliding portion has a large end and a small end. The width of the large end is greater than the width of the small end. The large end cooperates with the bottom wall, and the small end cooperates with the opening.

[0014] In an alternative embodiment of the present invention, the chassis further includes a connecting frame. The connecting frame is disposed between the first bracket and the second bracket. One end of the connecting frame is connected to the first bracket, and the other end is connected to the second bracket.

[0015] In an alternative embodiment of the present invention, the connecting frame includes a first connecting section and a second connecting section. The first connecting section is connected to the first bracket, and the second connecting section is connected to the second bracket. The first connecting section is a hollow structure. One end of the second connecting section away from the second bracket is disposed in the first connecting section and can slide relative to the first connecting section.

[0016] In a second aspect, an embodiment of the present invention provides a construction machine, which includes the chassis provided in the first aspect.

[0017] Advantages of the embodiments of the present invention: The chassis includes a frame, a positioning component, a driving member, a first bracket, and a second bracket. The positioning component is installed on the frame. The first bracket and the second bracket are respectively arranged on both sides of the frame and connected to the frame. The driving member is respectively connected to the first bracket and the second bracket. The positioning component is respectively connected to the first bracket and the second bracket. The driving member is used to drive the first bracket and the second bracket to move away from or close to each other. The positioning component is used to keep the distances between the first bracket and the frame and between the second bracket and the frame equal.

[0018] In the embodiments of the present invention, during the working process, when it is necessary to adjust the width of the chassis, the driving member drives the first bracket and the second bracket to move away from or close to each other. During the process of the first bracket and the second bracket moving away from each other, the positioning component keeps the distances between the first bracket and the frame and between the second bracket and the frame equal, so that the frame is always centered between the first bracket and the second bracket, avoiding the frame from moving back and forth during the working process, and ensuring the stability of the chassis when working at any width. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0020] Figure 1 A schematic structural diagram of the chassis from the first perspective provided by the first embodiment of the present invention;

[0021] Figure 2 A schematic structural diagram of the chassis from the second perspective provided by the first embodiment of the present invention;

[0022] Figure 3 A schematic structural diagram of the positioning component of the chassis from the first perspective provided by the first embodiment of the present invention;

[0023] Figure 4 A schematic structural diagram of the positioning component of the chassis from the second perspective provided by the first embodiment of the present invention.

[0024] Icons: 100 - chassis; 110 - positioning component; 112 - fixing piece; 1121 - mounting part; 1122 - sliding part; 1122a - large end; 1122b - small end; 1123 - sliding groove; 1123a - opening; 1123b - bottom wall; 1124 - first fixing plate; 1125 - second fixing plate; 1126 - fixing groove; 1127 - first connecting plate; 1128 - second connecting plate; 1129 - connecting groove; 114 - first connecting rod; 116 - second connecting rod; 120 - vehicle frame; 130 - driving part; 140 - first bracket; 150 - second bracket; 160 - connecting frame; 162 - first connecting section; 164 - second connecting section. Detailed implementation mode

[0025] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Generally, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0027] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention.

[0029] In addition, if terms such as "first", "second", etc. are used only for distinguishing descriptions, they cannot be understood as indicating or implying relative importance.

[0030] It should be noted that, without conflict, the features in the embodiments of the present invention can be combined with each other.

[0031] First embodiment

[0032] Please refer to Figure 1 , this embodiment provides a chassis 100. The chassis 100 provided in this embodiment can prevent the frame 120 from moving back and forth during operation, ensuring the stability of the chassis 100 during operation at any width.

[0033] Please refer to Figure 1 and Figure 2 , in this embodiment, the chassis 100 includes: a frame 120, a positioning assembly 110, a driving member 130, a first bracket 140, and a second bracket 150. The positioning assembly 110 is installed on the frame 120. The first bracket 140 and the second bracket 150 are respectively arranged on both sides of the frame 120 and connected to the frame 120. The driving member 130 is respectively connected to the first bracket 140 and the second bracket 150. The positioning assembly 110 is respectively connected to the first bracket 140 and the second bracket 150;

[0034] The driving member 130 is used to drive the first bracket 140 and the second bracket 150 to move away from or close to each other;

[0035] The positioning assembly 110 is used to keep the distances between the first bracket 140 and the frame 120 and between the second bracket 150 and the frame 120 equal.

[0036] In this embodiment, during operation, when it is necessary to adjust the width of the chassis 100, the driving member 130 drives the first bracket 140 and the second bracket 150 to move away from or close to each other. During the process of the first bracket 140 and the second bracket 150 moving away from each other, the positioning assembly 110 keeps the distances between the first bracket 140 and the frame 120 and between the second bracket 150 and the frame 120 equal, making the frame 120 always centered between the first bracket 140 and the second bracket 150, preventing the frame 120 from moving back and forth during operation, and ensuring the stability of the chassis 100 during operation at any width.

[0037] In this embodiment, when the driving member 130 drives the first bracket 140 and the second bracket 150 to move away from each other, the width of the chassis 100 gradually increases. When the driving member 130 drives the first bracket 140 and the second bracket 150 to move close to each other, the width of the chassis 100 gradually decreases.

[0038] Please refer to Figure 3 and Figure 4, in this embodiment, the positioning assembly 110 includes a fixing member 112, a first connecting rod 114 and a second connecting rod 116. One end of the first connecting rod 114 is rotatably connected to the fixing member 112, and the other end is rotatably connected to the first bracket 140. One end of the second connecting rod 116 is rotatably connected to the fixing member 112, and the other end is rotatably connected to the second bracket 150. The fixing member 112 is arranged on the vehicle frame 120.

[0039] In this embodiment, the first connecting rod 114 is rotatably connected to the first bracket 140, and the second connecting rod 116 is rotatably connected to the second bracket 150. When the driving member 130 drives the first bracket 140 and the second bracket 150 to move away from each other, the first connecting rod 114 rotates relative to the first bracket 140 and the fixing member 112, and the second connecting rod 116 rotates relative to the second bracket 150 and the fixing member 112. When the driving member 130 drives the first bracket 140 to move away from the second bracket 150, the first connecting rod 114 plays a guiding and limiting role for the first bracket 140. Similarly, when the driving member 130 drives the second bracket to move away from the first bracket 140, the second connecting rod 116 plays a guiding and limiting role for the second bracket 150.

[0040] In this embodiment, the first connecting rod 114 and the second connecting rod 116 are symmetrically arranged. When the driving member 130 drives the first bracket 140 and the second bracket 150 to move away from each other, the first connecting rod 114 and the second connecting rod 116 always remain symmetrically arranged, so that the distance between the first bracket 140 and the vehicle frame 120 and the distance between the second bracket 150 and the vehicle frame 120 always remain equal, so that the vehicle frame 120 is always located on the central axis of the first bracket 140 and the second bracket 150, avoiding the vehicle frame 120 from moving back and forth during work, and ensuring the stability of the chassis 100 when working at any width.

[0041] In this embodiment, the fixing member 112 includes a mounting portion 1121 and a sliding portion 1122. The mounting portion 1121 is fixed on the vehicle frame 120. A sliding groove 1123 is provided on the mounting portion 1121. The sliding portion 1122 is arranged in the sliding groove 1123 and can slide along the sliding groove 1123. The first connecting rod 114 and the second connecting rod 116 are rotatably connected to the sliding portion 1122.

[0042] In this embodiment, when the driving member 130 drives the first bracket 140 and the second bracket 150 to move away from each other, the first connecting rod 114 rotates relative to the first bracket 140 and the sliding portion 1122, and the second connecting rod 116 rotates relative to the second bracket 150 and the sliding portion 1122. During the rotation, the sliding portion 1122 slides in the extending direction of the sliding groove 1123 to adjust the distance between the first bracket 140 and the vehicle frame 120, and the distance between the second bracket 150 and the vehicle frame 120.

[0043] In this embodiment, during the process in which the driving member 130 drives the first bracket 140 and the second bracket 150 to move away from each other, the sliding portion 1122 slides forward in the sliding groove 1123. During the process in which the driving member 130 drives the first bracket 140 and the second bracket 150 to move closer to each other, the sliding portion 1122 slides backward in the sliding groove 1123.

[0044] It should be noted that front and back are two relative directions.

[0045] In this embodiment, the mounting portion 1121 is provided on the central axis of the vehicle frame 120, and the sliding groove 1123 extends along the central axis direction of the vehicle frame 120.

[0046] In this embodiment, the mounting portion 1121 is provided on the central axis of the vehicle frame 120, and the first connecting rod 114 and the second connecting rod 116 are always symmetrically arranged. When the driving member 130 drives the first bracket 140 and the second bracket 150 to move away from each other, the vehicle frame 120 is always located on the central axis between the first bracket 140 and the second bracket 150, so that the first bracket 140 and the second bracket 150 are always symmetrically arranged.

[0047] In this embodiment, the fixing member 112 further includes a first fixing plate 1124 and a second fixing plate 1125. The first fixing plate 1124 and the second fixing plate 1125 are arranged on the side of the sliding portion 1122 close to the first connecting rod 114. The first fixing plate 1124 and the second fixing plate 1125 are arranged at intervals to form a fixing groove 1126. One end of the first connecting rod 114 close to the sliding portion 1122 extends into the fixing groove 1126 and is rotatably connected to the first fixing plate 1124 and the second fixing plate 1125.

[0048] In this embodiment, one end of the first connecting rod 114 close to the sliding portion 1122 is inserted into the fixing groove 1126 and is rotatably connected to the first fixing plate 1124 and the second fixing plate 1125. The first fixing plate 1124 and the second fixing plate 1125 fix the first connecting rod 114 from both sides of the first connecting rod 114, which can improve the fixing effect between the first connecting rod 114 and the sliding portion 1122 and avoid the situation of falling off or dropping during rotation.

[0049] In this embodiment, the fixing member 112 further includes a first connecting plate 1127 and a second connecting plate 1128. The first connecting plate 1127 and the second connecting plate 1128 are disposed on a side of the sliding portion 1122 close to the second connecting rod 116. The first connecting plate 1127 and the second connecting plate 1128 are spaced apart to form a connecting groove 1129. One end of the second connecting rod 116 close to the sliding portion 1122 extends into the connecting groove 1129 and is rotatably connected to the first connecting plate 1127 and the second connecting plate 1128.

[0050] Similarly, the first connecting plate 1127 and the second connecting plate 1128 fix the second connecting rod 116 from both sides of the second connecting rod 116. When the second connecting rod 116 rotates relative to the sliding portion 1122, the first connecting plate 1127 and the second connecting plate 1128 fix the second connecting rod 116 from both sides, improving the fixing effect between the second connecting rod 116 and the sliding portion 1122 and avoiding the situation of falling off or dropping during the rotation process.

[0051] In this embodiment, the sliding groove 1123 has an opening 1123a and a bottom wall 1123b which are oppositely disposed. The width of the bottom wall 1123b is greater than the width of the opening 1123a. The sliding portion 1122 has a large end 1122a and a small end 1122b. The width of the large end 1122a is greater than the width of the small end 1122b. The large end 1122a is engaged with the bottom wall 1123b, and the small end 1122b is engaged with the opening 1123a.

[0052] In this embodiment, the mounting portion 1121 is mounted on a side of the vehicle frame 120 close to the ground. The opening 1123a of the sliding groove 1123 faces the ground. The width of the bottom wall 1123b is greater than the width of the opening 1123a and the width of the large end 1122a is greater than the width of the small end 1122b. When the chassis 100 is working, the bottom wall 1123b and the large end 1122a are clamped, which can prevent the sliding portion 1122 from falling out of the sliding groove 1123.

[0053] Please refer to Figure 2 , in this embodiment, the chassis 100 further includes a connecting frame 160. The connecting frame 160 is disposed between the first bracket 140 and the second bracket 150. One end of the connecting frame 160 is connected to the first bracket 140, and the other end is connected to the second bracket 150.

[0054] In this embodiment, the connecting frame 160 plays a role in connecting and guiding the first bracket 140 and the second bracket 150. When the driving member 130 drives the first bracket 140 and the second bracket 150 to move, the connecting frame 160 plays a supporting role for the first bracket 140 and the second bracket 150, enabling the first bracket 140 and the second bracket 150 to move smoothly.

[0055] In this embodiment, the connecting frame 160 includes a first connecting section 162 and a second connecting section 164. The first connecting section 162 is connected to the first bracket 140, and the second connecting section 164 is connected to the second bracket 150. The first connecting section 162 is a hollow structure, and one end of the second connecting section 164 away from the second bracket 150 is disposed within the first connecting section 162 and can slide relative to the first connecting section 162.

[0056] In this embodiment, when the first bracket 140 and the second bracket 150 are in relative motion, the second connecting section 164 slides relative to the first connecting section 162 within the first connecting section 162. When the first bracket 140 and the second bracket 150 move away from each other, the second connecting section 164 gradually slides out of the first connecting section 162. When the first bracket 140 and the second bracket 150 move towards each other, the second connecting section 164 gradually extends into the first connecting section 162.

[0057] In this embodiment, the driving member 130 is a driving hydraulic cylinder, and the width of the chassis 100 is determined by the stroke of the driving hydraulic cylinder. When the driving hydraulic cylinder moves to the maximum stroke, the width of the chassis 100 is the largest at this time. When the driving hydraulic cylinder moves to the minimum stroke, the width of the chassis 100 is the smallest at this time.

[0058] The working principle of the chassis 100 provided in this embodiment: In this embodiment, when it is necessary to adjust the width of the chassis 100, the driving member 130 drives the first bracket 140 and the second bracket 150 to move towards or away from each other. The first link 114 rotates relative to the first bracket 140 and the sliding portion 1122, and the second link 116 rotates relative to the second bracket 150 and the sliding portion 1122, causing the sliding portion 1122 to slide within the sliding groove 1123, thereby ensuring that the vehicle frame 120 is always located on the central axis of the first bracket 140 and the second bracket 150.

[0059] In summary, for the chassis 100 provided in this embodiment, in this embodiment, during the working process, when it is necessary to adjust the width of the chassis 100, the driving member 130 drives the first bracket 140 and the second bracket 150 to move away from or towards each other. During the process of the first bracket 140 and the second bracket 150 moving away from each other, the positioning assembly 110 keeps the distances between the first bracket 140 and the vehicle frame 120 and between the second bracket 150 and the vehicle frame 120 equal, so that the vehicle frame 120 is always centered between the first bracket 140 and the second bracket 150, avoiding the vehicle frame 120 from moving back and forth during the working process, and ensuring the stability of the chassis 100 when working at any width. This implementation process is simple and efficient, and no additional control actions are required compared to the original structure.

[0060] Second Embodiment

[0061] This embodiment provides a construction machinery, and the construction machinery provided by this embodiment can avoid the frame 120 from moving back and forth during operation, ensuring the stability of the chassis 100 during operation at any width.

[0062] For the sake of brief description, for the parts not mentioned in this embodiment, reference may be made to the first embodiment.

[0063] In this embodiment, the construction machinery includes a main body and the chassis 100 provided by the first embodiment. The frame 120 is connected to the main body.

[0064] As mentioned above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A chassis, characterized in that, Comprising: A vehicle frame, a positioning assembly, a driving member, a connecting frame, a first bracket, and a second bracket; The positioning assembly is installed on the vehicle frame. The first bracket and the second bracket are respectively disposed on both sides of the vehicle frame and connected to the vehicle frame. The driving member is respectively connected to the first bracket and the second bracket, and the driving member is configured to drive the first bracket and the second bracket to move in a direction away from or close to each other; The positioning assembly is used to keep the distances between the first bracket and the vehicle frame and between the second bracket and the vehicle frame equal. The positioning assembly includes a fixing member, a first connecting rod, and a second connecting rod. One end of the first connecting rod is rotatably connected to the fixing member, and the other end is rotatably connected to the first bracket. One end of the second connecting rod is rotatably connected to the fixing member, and the other end is rotatably connected to the second bracket. The fixing member is disposed on the vehicle frame; The fixing member includes a mounting portion and a sliding portion. The mounting portion is fixed to the vehicle frame. A sliding groove is provided on the mounting portion. The sliding portion is disposed in the sliding groove and can slide along the sliding groove. The first connecting rod and the second connecting rod are rotatably connected to the sliding portion; The connecting frame is disposed between the first bracket and the second bracket. One end of the connecting frame is connected to the first bracket, and the other end is connected to the second bracket. The length of the connecting frame is adapted to be telescopic.

2. The chassis according to claim 1, characterized in that, The mounting portion is disposed on the central axis of the vehicle frame, and the sliding groove extends along the central axis direction of the vehicle frame.

3. The chassis according to claim 1, characterized in that, The fixing member further includes a first fixing plate and a second fixing plate. The first fixing plate and the second fixing plate are disposed on a side of the sliding portion close to the first connecting rod. The first fixing plate and the second fixing plate are spaced apart to form a fixing groove. One end of the first connecting rod close to the sliding portion extends into the fixing groove and is rotatably connected to the first fixing plate and the second fixing plate.

4. The chassis according to claim 1, characterized in that, The fixing member further includes a first connecting plate and a second connecting plate. The first connecting plate and the second connecting plate are disposed on a side of the sliding portion close to the second connecting rod. The first connecting plate and the second connecting plate are spaced apart to form a connecting groove. One end of the second connecting rod close to the sliding portion extends into the connecting groove and is rotatably connected to the first connecting plate and the second connecting plate.

5. The chassis according to claim 1, characterized in that, The sliding groove has an opening and a bottom wall disposed opposite to each other. The width of the bottom wall is greater than the width of the opening. The sliding portion has a large end and a small end. The width of the large end is greater than the width of the small end. The large end cooperates with the bottom wall, and the small end cooperates with the opening.

6. The chassis according to claim 1, characterized in that, The connecting frame includes a first connecting section and a second connecting section. The first connecting section is connected to the first bracket, and the second connecting section is connected to the second bracket. The first connecting section is a hollow structure. One end of the second connecting section away from the second bracket is disposed in the first connecting section and can slide relative to the first connecting section.

7. An engineering machinery, characterized in that, Including the chassis according to any one of claims 1-6.

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