Swivel limit adjustment mechanism and seat for a cab of a construction machine

Abstract

The present application belongs to the technical field of engineering machinery, and discloses a slewing limiting adjusting mechanism for rotation adjusting and limiting of a slewing component relative to a base, comprising a supporting part, a plug pin and a limiting groove, wherein the supporting part rotates synchronously with the slewing component; the plug pin is arranged on the supporting part to slide up and down, and an adjusting assembly for driving the plug pin to slide up and down is arranged on the supporting part; the limiting groove is arranged on the base; the limiting groove comprises at least two corresponding to different postures of the slewing component, and / or the plug pin comprises at least two corresponding to different postures of the slewing component; when limiting, at least part of the plug pin is inserted into the corresponding limiting groove in alignment. A seat for an engineering machinery cab is also disclosed. The present application provides a new seat adjusting structure, which can optimize the structure arrangement form, improve the user experience, and the structure arrangement is relatively flexible, and the layout can be flexibly adjusted according to the space structure.

Description

Technical Field

[0001] This invention belongs to the field of engineering machinery technology, specifically relating to a slewing limit adjustment mechanism and a seat for the cab of engineering machinery. Background Technology

[0002] Because pavers require a wider field of vision, operators need more working space. Therefore, most pavers use horizontally adjustable seats or cabs to ensure a larger working area for the operator.

[0003] The current main design pattern is that the seat can rotate around the axis in the horizontal plane through the adjustment mechanism. Since the rotation mechanism is simple in design, most of them design the limiting device near the rotation axis of the seat. When using it, the user needs to lean forward at a large angle and operate it by hand or foot, which is laborious and inconvenient. In addition, the user also needs to adjust their body position before proceeding with the subsequent operation.

[0004] Improving the human-machine experience is one of the main directions in the design of pavers. The seat is the main working and resting area for the operator, and it is a key aspect of improving the human-machine experience. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems and shortcomings by providing a slewing limit adjustment mechanism and a seat for the cab of engineering machinery. This invention offers a new seat adjustment structure that optimizes the structural layout, enhances the user experience, and allows for flexible layout adjustments based on the spatial structure.

[0006] To achieve the above objectives, the technical solution adopted is: A rotation limit adjustment mechanism for adjusting and limiting the rotation of a rotating component relative to a base, comprising: The support part rotates synchronously with the rotating component; A plug-in pin, which is slidably disposed on the support portion, and an adjustment component for driving the plug-in pin to move up and down is disposed on the support portion; and... The limiting groove is arranged on the base; The limiting groove includes at least two corresponding to different postures of the rotating component, and / or the insertion pin includes at least two corresponding to different postures of the rotating component; When the limit is reached, at least a portion of the said insertion pins are aligned and inserted into the corresponding limit slots.

[0007] According to the rotary limit adjustment mechanism of the present invention, optionally, when there are at least two insertion / removal pins, the adjustment assembly includes: Each connecting plate is connected to a support via a rotating shaft at its center. The upper end of each connecting plate is pivotally connected to one end of the corresponding connecting plate. Synchronous linkages are provided between adjacent connecting plates; and, The handle is connected to one of the connecting plates; When the drive handle is activated, each connecting plate swings synchronously, causing the corresponding plug-in pins to move synchronously.

[0008] According to the rotary limit adjustment mechanism of the present invention, optionally, the synchronous connecting rod and the connecting plate are connected by a movable connecting head.

[0009] According to the rotary limit adjustment mechanism of the present invention, optionally, the synchronous connecting rod is a bent rod in the shape of a broken line.

[0010] According to the rotary limit adjustment mechanism of the present invention, optionally, when there is one insertion pin, the adjustment assembly includes a connecting plate and a handle, the middle part of the connecting plate is pivotally mounted on the support part via a rotating shaft, the upper end of the insertion pin is pivotally mounted to one end of the connecting plate, and the handle is mounted at the other end of the connecting plate.

[0011] According to the rotary limit adjustment mechanism of the present invention, optionally, an L-shaped bent plate is provided between the plug pin and the connecting plate, and the plug pin and the bent plate, as well as the bent plate and the connecting plate, are connected by bolts.

[0012] According to the rotary limit adjustment mechanism of the present invention, optionally, the support part includes a main board and a vertical plate arranged on the main board, the plug pin is slidably arranged on the main board, and the rotating shaft is arranged on the corresponding vertical plate.

[0013] According to the rotary limit adjustment mechanism of the present invention, optionally, a fixed seat is provided on the base, and a limit block is fixedly provided on the fixed seat by bolts. The limit groove is formed on the limit block, and inclined slopes or arc surfaces corresponding to the lower ends of the insertion pins are provided on both sides of the limit block.

[0014] A seat for use in the cab of construction machinery, comprising: The seat body, wherein the seat is rotatably mounted on the frame at the bottom of the cab; and As described above, in the slewing limit adjustment mechanism, the support part is located at the bottom of the seat, and the limiting groove is arranged on the vehicle frame; The handle is located at the left front or right front of the seat, and the height of the handle is within the working range where the operator's arm hangs naturally.

[0015] According to the present invention, a seat for the cab of construction machinery is provided, preferably, the construction machinery is a paver.

[0016] The beneficial effects achieved by adopting the above technical solution are: 1) This application achieves seat limit adjustment by using corresponding plug-in pins and limit slots to limit the seat in different posture positions. At the same time, the positions of the plug-in pins and limit slots can be flexibly arranged according to the corresponding posture to meet space requirements, reduce the demand for assembly space, and the overall structure is highly flexible. 2) The overall structure of this application is highly malleable and can effectively utilize the space under the seat to arrange the spatial positions of various components. It has low requirements for assembly space. Through the synchronous linkage, multiple plug-in pins can be synchronously linked. The overall structure arrangement can minimize interference with other components and make full use of the narrow space at the bottom. 3) This application can improve the user's operation method and operation process. By selecting the placement point of the handle, the operator's operation experience can be optimized and the comfort of human-machine operation can be improved. The position of the handle in this application is less constrained by the entire adjustment mechanism, and its position can be reasonably optimized during assembly design, thereby ensuring a good operating experience. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. The drawings are merely illustrative of some embodiments of the present invention and are not intended to limit the scope of the present invention to all embodiments.

[0018] Figure 1 This is a schematic diagram of the rotary limit adjustment mechanism according to an embodiment of the present invention. Figure 1 .

[0019] Figure 2 This is a schematic diagram of the rotary limit adjustment mechanism according to an embodiment of the present invention. Figure 2 .

[0020] Figure 3 This is a schematic diagram showing the disassembled structure of the rotary limit adjustment mechanism according to an embodiment of the present invention.

[0021] Figure 4 This is an exploded view of the rotary limit adjustment mechanism according to an embodiment of the present invention.

[0022] Figure 5 The working state of the rotary limit adjustment mechanism in this embodiment of the invention. Figure 1 .

[0023] Figure 6 The working state of the rotary limit adjustment mechanism in this embodiment of the invention. Figure 2 .

[0024] Figure 7 The working state of the rotary limit adjustment mechanism in this embodiment of the invention. Figure 3 .

[0025] Figure 8 The working state of the rotary limit adjustment mechanism in this embodiment of the invention. Figure 4 .

[0026] Figure 9 The working state of the rotary limit adjustment mechanism in this embodiment of the invention. Figure 5 .

[0027] Figure 10 The working state of the rotary limit adjustment mechanism in this embodiment of the invention. Figure 6 .

[0028] Figure 11 This is a structural schematic diagram of a seat for a driver's cab of engineering machinery according to an embodiment of the present invention.

[0029] Number in the diagram: 1 is the adjustment component, 11 is the plug pin, 12 is the bending plate, 13 is the first connecting plate, 14 is the synchronous connecting rod, 15 is the movable connector, 16 is the second connecting plate, 17 is the handle, and 18 is the rotating shaft. 2 is the support section, 21 is the main board, and 22 is the upright plate; 3 is the limiting part, 31 is the limiting block, 32 is the fixing seat, 33 is the bolt, 34 is the limiting groove, and 35 is the inclined surface; 4 represents the seat, and 41 represents the frame. Implementation

[0030] The exemplary solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art.

[0031] It should be noted that when one element is described as "connected," "coupled," or "connected" to another element, it can mean that they are directly connected, coupled, or connected. However, it should be understood that there may be intermediate elements between them; that is, it covers both direct and indirect connection positions.

[0032] It should be noted that the use of words such as "one" or "a" does not necessarily indicate a quantity limitation. Words such as "including" or "contains" mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects.

[0033] It should be noted that terms such as "up," "down," "left," and "right," which indicate orientation or positional relationship, are only used to express relative positional relationship. They are used for the convenience of describing the present invention and do not mean that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0034] See Figures 1-10 This application discloses a rotation limit adjustment mechanism for adjusting and limiting the rotation of a rotating component relative to a base. In this embodiment, the rotating component is a seat, and the base is a vehicle frame. The rotation limit adjustment mechanism of this application is mainly used for adjusting and limiting the rotation of the seat relative to the vehicle frame. Specifically, the rotation limit adjustment mechanism includes a support part 2, a plug-in pin 11, and a limiting groove 34. The support part 2 rotates synchronously with the seat. The support part 2 can be welded or bolted to the lower part of the seat, or it can be manufactured as part of the seat frame. The plug-in pin 11 is slidably disposed on the support part 2. An adjustment component 1 for driving the plug-in pin 11 to move up and down is disposed on the support part 2. The limiting groove 34 is disposed on the base. The limiting groove 34 includes at least two corresponding to different postures of the seat, and / or the plug-in pin 11 includes at least two corresponding to different postures of the seat. When limiting, at least some of the plug-in pins 11 are aligned and inserted into the corresponding limiting groove 34.

[0035] The "and / or" in the above description indicates that three relationships can exist. For example, A and / or B can represent three cases: A exists alone, A and B exist simultaneously, and B exists alone.

[0036] The number of plug-in pins 11 and the number of limiting slots 34 can be reasonably arranged according to the actual application. For example, when the seat only needs to change between two postures, only one plug-in pin and two limiting slots, or two plug-in pins and one limiting slot, are needed. Figures 1-10 The structure shown illustrates a limit adjustment mechanism consisting of two plug pins 11 and a limit groove 34.

[0037] In one implementation, when at least two plug-in pins 11 are arranged, the number of limiting slots can be one or more. To enable the multiple plug-in pins 11 to move synchronously, the adjustment component 1 in this embodiment includes a connecting plate corresponding to each plug-in pin 11, a synchronous connecting rod 14, and a handle 17. The middle part of each connecting plate is pivotally mounted on the support part 2 via a rotating shaft 18. The upper end of each plug-in pin 11 is pivotally connected to one end of the corresponding connecting plate. A synchronous connecting rod 14 is provided between adjacent connecting plates. The handle 17 is connected to one of the connecting plates. When the handle 17 is driven to move, each connecting plate swings synchronously and drives the corresponding plug-in pin 11 to move synchronously. The synchronous connecting rod 14 in the above structure is connected to the connecting plate via a movable connector 15 to ensure smooth operation and avoid jamming between structural components. In addition, in order to adapt to the corresponding installation space and the synchronization between components, the synchronous connecting rod 14 is a bent rod with a zigzag shape.

[0038] like Figure 3 and Figure 4 The diagram shows a rotary limit adjustment mechanism comprising two plug-in pins. The connecting plate in this structure includes connecting plates 13 and 16, which are respectively connected to the two plug-in pins 11. Connecting plates 13 and 16 are connected by a synchronous linkage. When there are more plug-in pins, additional synchronous linkages and connecting plates can be added to ensure the synchronous operation of each plug-in pin.

[0039] In another implementation, when there is one insertion pin 11, the number of limiting grooves 34 is at least two. The limiting grooves 34 are arranged according to the required posture position of the seat. The adjustment component 1 includes a connecting plate and a handle 17. The middle part of the connecting plate is pivotally mounted on the support part 2 via a rotating shaft 18. The upper end of the insertion pin 11 is pivotally connected to one end of the connecting plate, and the handle 17 is located at the other end of the connecting plate.

[0040] In the two embodiments described above, in order to optimize the arrangement of the handle, a connecting plate and a synchronous linkage can be added to change the position of the handle and realize the transmission between the handle 17 and the plug pin 11, thereby avoiding assembling the handle 17 and one of the plug pins 11 on the same connecting plate.

[0041] To facilitate the connection between the plug pin and the connecting plate, in the above structure, an L-shaped bending plate 12 is provided between the plug pin 11 and the connecting plate in this embodiment. The plug pin 11 and the bending plate 12, as well as the bending plate 12 and the connecting plate, are connected by bolts 33.

[0042] Furthermore, the support portion 2 of this application includes a main board 21 and upright plates 22 disposed on the main board 21. A plug pin 11 is slidably disposed on the main board 21, and the rotating shaft 18 is disposed on the corresponding upright plate 22. The accompanying drawings of this application show that the support portion is formed by welding and fixing one main board and two upright plates together.

[0043] Regarding the arrangement of the limiting groove, in this embodiment, a fixed seat 32 is provided on the base (i.e., the vehicle frame), and a limiting block 31 is fixedly installed on the fixed seat 32 by bolts 33. The limiting groove 34 is formed on the limiting block 31, and inclined slopes 35 or arc surfaces corresponding to the lower ends of the insertion pin 11 are provided on both sides of the limiting block 31. The inclined slopes 35 or arc surfaces can guide the insertion pin 11 into the limiting groove 34 during the adjustment process. like Figure 11 As shown, this application also discloses a seat for a cab of construction machinery, including a seat body and a slewing limit adjustment mechanism as described above. The seat is slewing on the frame at the bottom of the cab. The support is located at the bottom of the seat, and the limit groove is arranged on the frame. In order to facilitate operation and improve the comfort of human-machine operation, the handle in this embodiment is arranged at the left front or right front of the seat, and the height of the handle is within the working range where the operator's arm hangs down naturally.

[0044] The construction machinery involved in the aforementioned dismissal was a paver, and the slewing limit adjustment mechanism is used to adjust the posture of the seat located in the driver's cab of the paver.

[0045] The following section provides a detailed description of the structure and working principle of the slewing limit adjustment mechanism for the paver's cab, based on specific practical applications: like Figures 1-10 As shown, the slewing limit adjustment mechanism is mainly used in the cab seats of construction machinery such as pavers. It consists of three parts: adjustment component 1, support part 2, and limit part 3. The adjustment component 1 is mounted on the support part 2, and the adjustment component 1 and the limit part 3 are indirectly connected by a limit groove and a plug pin.

[0046] Adjustment assembly 1 consists of a plug-in pin 11, a bent plate 12, a first connecting plate 13, a synchronous connecting rod 14, a movable connector 15, a second connecting plate 16, a handle 17, and a rotating shaft 18. The entire assembly is connected by threads, bolts, and nuts. The bent plate 12 acts as an intermediate connector, connecting the plug-in pin 11 to both the first connecting plate 13 and the second connecting plate 16 via bolts. The two movable connectors 15 are directly connected to the synchronous connecting rod 14, serving as a central connector between the first connecting plate 13 and the second connecting plate 16 via bolts and nuts. The rotating shaft 18 is welded to the support part 2 and connected to both the first connecting plate 13 and the second connecting plate 16 via bolts and nuts, allowing the first connecting plate 13 and the second connecting plate 16 to rotate around the shaft. Finally, the handle 17 is directly connected to the second connecting plate 16, transmitting force to the second connecting plate 16, the other connecting plates, and the plug-in pin 11. The handle 17 is located at the front right of the seat bottom.

[0047] The limiting part 3 consists of a limiting block 31 and a fixing seat 32, which are connected by bolts and nuts. The fixing seat 32 is directly connected to the vehicle frame by bolts, serving as an overall fixation unit. The limiting block 31 is indirectly connected to the protruding part of the insertion pin 11 through a limiting groove on it, thereby achieving a limiting function.

[0048] The working principle is: In use, the user's right hand hangs naturally, and they pull handle 17, which in turn pulls up the two plug pins 11 through the adjustment mechanism, releasing the limiting block 31 from restricting the seat. Figure 6 As shown; then the user rotates the seat, and then can release handle 17, simplifying the operation, as... Figure 7 and Figure 8 As shown. Finally, before the other insertion pin 11 enters the limiting block 31, the exposed part of the insertion pin 11 interferes with the slope of the limiting block 31 surface. However, due to the inertia of the seat rotation, the resistance of the limiting block 31 surface to the insertion pin 11 becomes pressure, pressing the insertion pin 11 upward, thereby reducing the resistance, as shown. Figure 9 As shown. This causes the insertion pin 11 to continue forward until it reaches the limiting groove 34 of the limiting block 31. Since the limiting groove 34 is no longer in contact with the insertion pin 11, the insertion pin 11 is immediately released, and the protruding part is inserted into the limiting block 31, completing the seat limiting, as shown. Figure 10 As shown. Seat adjustment complete.

[0049] This application not only changes the force application position of the paver seat adjustment mechanism and the user's usage method, but also changes the overall storage form and position, so that it no longer interferes with the user's activity range. The change in installation position makes subsequent maintenance convenient and will not have too much impact on the original equipment's structural features, thus effectively adapting to the original equipment.

[0050] The preferred embodiments for implementing the present invention have been described in detail above. However, it should be understood that these embodiments are merely illustrative and not intended to limit the scope, application, or construction of the invention in any way. The scope of protection of the present invention is defined by the appended claims and their equivalents. Those skilled in the art can make numerous modifications to the foregoing embodiments under the teachings of this invention, and all such modifications fall within the scope of protection of this invention.

Claims

1. A rotary limit adjustment mechanism for adjusting and limiting the rotation of a rotary component relative to a base, characterized in that, include: The support part rotates synchronously with the rotating component; A plug-in pin, which is slidably disposed on the support portion, and an adjustment component for driving the plug-in pin to move up and down is disposed on the support portion; and... The limiting groove is arranged on the base; The limiting groove includes at least two corresponding to different postures of the rotating component, or / and the insertion pin includes at least two corresponding to different postures of the rotating component; When the limit is reached, at least a portion of the said insertion pins are aligned and inserted into the corresponding limit slots; Wherein, when there are at least two insertion / removal pins, the adjustment assembly includes: Each connecting plate is connected to a support via a rotating shaft at its center. The upper end of each connecting plate is pivotally connected to one end of the corresponding connecting plate. Synchronous linkages are provided between adjacent connecting plates; and, The handle is connected to one of the connecting plates; When the drive handle is activated, each connecting plate swings synchronously, causing the corresponding plug-in pins to move synchronously.

2. The rotary limit adjustment mechanism according to claim 1, characterized in that, The synchronizing link is connected to the connecting plate via a movable connector.

3. The rotary limit adjustment mechanism according to claim 1, characterized in that, The synchronizing link is a bent rod with a broken line shape.

4. The rotary limit adjustment mechanism according to claim 1, characterized in that, When there is one insertion pin, the adjustment assembly includes a connecting plate and a handle. The middle part of the connecting plate is pivotally mounted on the support part via a rotating shaft. The upper end of the insertion pin is pivotally connected to one end of the connecting plate, and the handle is located at the other end of the connecting plate.

5. The rotary limit adjustment mechanism according to any one of claims 2 to 4, characterized in that, An L-shaped bending plate is provided between the plug pin and the connecting plate, and the plug pin and the bending plate, as well as the bending plate and the connecting plate, are connected by bolts.

6. The rotary limit adjustment mechanism according to any one of claims 2 to 4, characterized in that, The support includes a main board and a vertical plate arranged on the main board. The plug pin is slidably disposed on the main board, and the rotating shaft is disposed on the corresponding vertical plate.

7. The rotary limit adjustment mechanism according to claim 1, characterized in that, A fixed seat is provided on the base, and a limit block is fixedly installed on the fixed seat by bolts. The limit groove is opened on the limit block, and inclined slopes or arc surfaces corresponding to the lower end of the insertion pin are provided on both sides of the limit block.

8. A seat for the cab of construction machinery, characterized in that, include: The seat body is rotatably mounted on the frame at the bottom of the cab; as well as The rotation limit adjustment mechanism as described in any one of claims 1-7, wherein the support part is disposed at the bottom of the seat, the base is a vehicle frame, and the limiting groove is disposed on the vehicle frame; The handle is located at the left front or right front of the seat, and the height of the handle is within the working range where the operator's arm hangs naturally.

9. The seat for the cab of construction machinery according to claim 8, characterized in that, The construction machinery mentioned is a paver.

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