Pilot control device and working machine

Abstract

The utility model relates to a pilot control device and an operation machine comprising the pilot control device. The pilot control device comprises a control handle (4), a plurality of pilot hoses (5), a pipe clamp (6) and a support (7), wherein the control handle (4) is mounted on one side of the seat and can move along with the seat, the pipe clamp (6) is made of flexible materials, and the support (7) is made of rigid materials. A plurality of pilot hoses pass through apertures on the floor and include a first section connected to the manipulation handle and a second section located beneath the floor. The pipe clamp is provided with a plurality of pipeline holes for the pilot hose to penetrate through. The support is connected to the floor at the periphery of the opening and is configured to extrude the pipe clamp, so that the pilot hose reserved for a certain length above the floor is fixed to the opening in a sealing mode through the pipe clamp. According to the pilot control device, on one hand, the requirement that the control handle moves along with the seat is met, the control comfort is improved, and on the other hand, the pilot hose is reliably sealed and fixed on the floor.

Description

Technical Field

[0001] This utility model relates to the field of work machinery technology, and in particular to a pilot control device and work machinery including the pilot control device. Background Technology

[0002] Construction machinery such as bulldozers, excavators, and loaders typically require pilot control devices to change the operating state of the main valve in the hydraulic system. Pilot control devices may include a control handle, a multi-way valve, and pilot lines. The control handle is connected to the multi-way valve via pilot lines, allowing the operator to operate the control handle and, consequently, control the opening or closing of the main valve through the multi-way valve, thus regulating and controlling the hydraulic system.

[0003] In existing technology, the control handle is typically located on the control box on the right armrest side, and this control box does not change position with the seat's fore-and-aft adjustment. When the seat is adjusted and moved forward and backward by the driver, the position of the control handle may be uncomfortable for the driver. With increasing demands for driving comfort, there is a need for the control handle to move with the seat. The traditional method of fixing the pilot hose to the floor cannot meet this requirement, as the pilot hose will move up and down when the control handle moves with the seat. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the above-mentioned problems and / or other problems existing in the prior art.

[0005] To achieve the above objectives, according to one aspect of the present invention, a pilot control device is provided, comprising a control handle mounted on one side of a seat and movable with the seat, a plurality of pilot hoses, a clamp made of a flexible material, and a bracket made of a rigid material. The plurality of pilot hoses pass through an opening in the floor and include a first section connected to the control handle and a second section located below the floor. The clamp has a plurality of tubing holes for the pilot hoses to pass through. The bracket is connected to the floor at the periphery of the opening and is configured to compress the clamp to seal and fix a portion of the pilot hose, pre-existing above the floor, to the opening.

[0006] According to one embodiment of the present invention, the pipe clamp includes a connecting portion and a plurality of clamping portions extending from the connecting portion to the same side, wherein the plurality of clamping portions are arranged side by side along the extrusion direction and are integrally formed with the connecting portion.

[0007] According to one embodiment of the present invention, the sidewalls of two adjacent clamping parts facing each other are respectively provided with half holes to form the pipeline holes.

[0008] According to one embodiment of the present invention, the support includes a first support and a second support disposed on both sides of the tube clamp along the compression direction. A fastening assembly passes through the first support, the tube clamp, and the second support and locks in place to compress the tube clamp.

[0009] According to one embodiment of the present invention, both the first bracket and the second bracket include an integrally formed pipe clamp fitting portion and a floor fitting portion. Each of the pipe clamp fitting portions is detachably fixed to the pipe clamp via the fastening assembly. Each of the floor fitting portions is detachably fixed to the floor.

[0010] According to one embodiment of the present invention, the pipe clamp is provided with a pipe clamp hole extending along the extrusion direction. The pipe clamp mating portions of the first bracket and the second bracket are respectively provided with a first through hole and a second through hole corresponding to the pipe clamp hole. The fastening assembly includes a bolt and a nut, the bolt passing through the first through hole, the pipe clamp hole, and the second through hole and being fastened via the nut.

[0011] According to one embodiment of the present invention, the fastening assembly further includes a spacer disposed within the pipe clamp hole for the bolt to pass through. The length of the spacer is less than the length of the pipe clamp hole.

[0012] According to one embodiment of the present invention, the floor-fitting portion of the first bracket and the second bracket extends toward the side away from the pipe clamp and is respectively provided with a first fixing hole and a second fixing hole. Fasteners pass through the first fixing hole and the second fixing hole to fix the first bracket and the second bracket to the floor respectively.

[0013] According to one embodiment of the present invention, the tube clamp protrudes from the floor fitting portion in a direction toward the underside of the floor.

[0014] According to another aspect of the present invention, a working machine is provided, which includes the pilot control device as described above.

[0015] The pilot control device of this invention improves operating comfort by installing the control handle on one side of the seat and allowing it to move with the seat. Furthermore, by using a bracket made of rigid material to compress a clamp made of flexible material, a pilot hose of a certain length is clamped above the floor, reliably achieving a sealed fixation of the pilot hose at the floor. Attached Figure Description

[0016] The features and advantages of this utility model will become clear from the following detailed description provided with reference to the accompanying drawings. It should be understood that the following drawings are merely schematic and not necessarily drawn to scale, and therefore should not be considered as limitations on this utility model, wherein:

[0017] Figure 1 This is a schematic diagram showing the pilot control device installed in the driver's cab according to an embodiment of the present invention.

[0018] Figure 2 yes Figure 1 The top view of the clamps and brackets of the pilot control device shown in the installed state.

[0019] Figure 3 It is along Figure 2 A cross-sectional view along line AA in the diagram.

[0020] Figure 4 yes Figure 1 The front view of the bracket of the pilot control device in the installed state.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Seat; 2. Cab; 3. Control box; 4. Control handle; 5. Pilot hose; 6. Pipe clamp; 61. Pipe hole; 62. Connecting part; 63. Clamping part; 64. Gap; 65. Half hole; 66. Pipe clamp hole; 7. Bracket; 71. First bracket; 711. Pipe clamp fitting part; 712. Floor fitting part; 713. First through hole; 714. First fixing hole; 72. Second bracket; 721. Pipe clamp fitting part; 722. Floor fitting part; 723. Second through hole; 724. Second fixing hole; 73. Bolt; 74. Nut; 75. Spacer; 8. Fastener. Detailed Implementation

[0023] Embodiments of the present invention are described below with reference to the accompanying drawings. In the following description, numerous specific details are set forth to enable those skilled in the art to more fully understand and implement the present invention. However, it will be apparent to those skilled in the art that implementations of the present invention may not include some of these specific details. Furthermore, it should be understood that the present invention is not limited to the specific embodiments described. Rather, the present invention can be conceived to be implemented with any combination of the features and elements described below, regardless of whether they relate to different embodiments. Therefore, the following aspects, features, embodiments, and advantages are for illustrative purposes only and should not be construed as elements or limitations of the claims unless expressly set forth in the claims.

[0024] The terms "first" and "second" are used below to describe the elements of this application. These terms are used only to distinguish the individual elements and not to limit the nature, order, or number of these elements. The terms "comprising" and "having" are used to indicate an open-ended inclusion and mean that there may be additional elements / components besides those listed.

[0025] Figure 1 A schematic diagram showing the installation state of a pilot control device according to an embodiment of the present invention is provided. Figure 1 As shown, seat 1 is mounted on the floor (not shown) inside the cab 2, and can be moved back and forth. A control box 3 is fixed to one side (e.g., the right side) of seat 1, and the control box 3 can move back and forth with seat 1.

[0026] The pilot control device according to this embodiment may include a control handle 4, a plurality of pilot hoses 5, a clamp 6, and a bracket 7. The control handle 4 is fixed to the control box 3 and can move back and forth with the control box 3 and the seat 1. The clamp 6 is made of a flexible material (e.g., rubber, silicone, etc.) and is provided with a plurality of pipe holes 61 through which the pilot hoses 5 pass. The pilot hoses 5 pass through an opening in the floor and include a first section connected to the control handle 4 and a second section located below the floor. The second section of the pilot hose 5 can be connected to a corresponding valve port of a multi-way valve. The bracket 7 is made of a rigid material (e.g., stainless steel, etc.) and is fixed to the floor at the periphery of the opening in the floor. The bracket 7 is configured to compress the clamp 6 to seal and fix the pilot hose 5, which has a certain length reserved above the floor, to the opening in the floor via the flexible clamp 6. That is, the opening in the floor is reliably sealed between the clamp 6 and the bracket 7, and the clamp 6 is also reliably sealed between the multiple pilot hoses 5.

[0027] Figures 2 to 4 The specific structures of the pipe clamp 6 and the bracket 7 according to this embodiment are shown. Figure 2 As shown, the pipe clamp 6 is generally rectangular in shape and may include an integrally formed connecting portion 62 and a plurality of clamping portions 63. The connecting portion 62 extends generally in the transverse direction and is elongated. In this document, "transverse direction" refers to the direction in which the pipe clamp 6 is compressed, i.e., the compression direction; in this embodiment, it is... Figures 2 to 4 In the left-right direction. Multiple clamping parts 63 are arranged side-by-side in the transverse direction and on the same side of the connecting part 62. Figure 2 The upper side of the clamp 6 extends longitudinally. In this text, "longitudinal" refers to the direction perpendicular to the transverse direction within the extension plane of the clamp 6; in this embodiment, it is... Figure 2 The vertical direction within. A gap 64 can be formed between two adjacent clamping parts 63.

[0028] Furthermore, each clamping part 63 has a left side wall and a right side wall in the lateral direction. Relative to a slit 64, the right side wall of the clamping part 63 to the left of the slit 64 faces each other. The opposing side walls of these two adjacent clamping parts 63 are each provided with at least one semi-hole 65, and two corresponding semi-holes 65 together form a conduit hole 61. The two corresponding semi-holes 65 can each be semi-circular, or one can be an arc shape smaller than a semi-circle and the other larger than a semi-circle.

[0029] Figure 3 It is along Figure 2 The cross-sectional view along line AA in the figure shows an assembly diagram of the pipe clamp 6 and the bracket 7 in this embodiment. Figure 2 and Figure 3 As shown, the pipe clamp 6 has two pipe clamp holes 66 extending laterally. One pipe clamp hole 66 is located at one end of the pipe clamp 6 in the longitudinal direction and extends through the entire connecting portion 62. The other pipe clamp hole 66 is located at the other end of the pipe clamp 6 in the longitudinal direction and extends through multiple clamping portions 63. It can be understood that when the clamping portions 63 extend to a large length, three or more pipe clamp holes 66 may also be provided.

[0030] Figure 4 A schematic diagram of the structure of the bracket 7 in this embodiment is shown. (Combined with...) Figures 2 to 4 As shown, bracket 7 can be a first bracket 71 and a second bracket 72. The first bracket 71 and the second bracket 72 are detachably fixed to the opening in the floor. The first bracket 71 is located on one side of the pipe clamp 6 in the lateral direction. Figure 2 and Figure 3 (Left side of the middle). The second bracket 72 is located on the other side of the pipe clamp 6 in the lateral direction. Figure 2 and Figure 3 (Right side of the middle). By passing the fastening assembly through the first bracket 71, the pipe clamp 6, and the second bracket 72 and locking it, the first bracket 71 and the second bracket 72 squeeze the pipe clamp 6 on both sides.

[0031] Specifically, please refer to Figures 2 to 4 The first support 71 may include one sidewall along the tube clamp 6. Figure 2 and Figure 3 The pipe clamp fitting portion 711 extends from the left side wall of the pipe clamp 6, and the floor fitting portion 712 extends from the upper surface of the floor. The pipe clamp fitting portion 711 is provided with a first through hole 713 corresponding to the number and position of the pipe clamp holes 66. The floor fitting portion 712 fits against the periphery of the opening in the floor and is provided with a first fixing hole 714. Similarly, the second bracket 72 may include a pipe clamp 6 along the other side wall ( Figure 2 and Figure 3The first bracket 71 has a pipe clamp fitting portion 721 extending from the right side wall and a floor fitting portion 722 extending along the upper surface of the floor. The pipe clamp fitting portion 721 is provided with a second through hole 723 corresponding to the number and position of the pipe clamp holes 66. The floor fitting portion 722 fits against the periphery of the opening in the floor and is provided with a second fixing hole 724. The pipe clamp fitting portion 711 and the floor fitting portion 712 of the first bracket 71 are connected at approximately right angles, and the pipe clamp fitting portion 721 and the floor fitting portion 721 of the second bracket 72 are also connected at approximately right angles. That is, both the first bracket 71 and the second bracket 72 are approximately L-shaped. Fasteners 8 (e.g., bolts) pass through the first fixing hole 714 and the second fixing hole 724 respectively to fix the first bracket 71 and the second bracket 72 to the floor. In this embodiment, the number of the first fixing hole 714 and the second fixing hole 724 can be one or more as needed.

[0032] In addition, such as Figure 3 As shown, the pipe clamp 6 protrudes from the floor fitting portions 712 and 722 in the direction towards the underside of the floor, that is, it is closer to the space under the floor than the floor fitting portions 712 and 722. For example, the lower surface of the pipe clamp 6 may protrude approximately 2 mm from the floor fitting portions 712 and 722. This further ensures the seal at the floor opening.

[0033] Continue to refer to Figures 2 to 4 The fastening assembly may include a bolt 73 and a nut 74, and may optionally include a washer. The bolt 73 passes laterally through the washer, the second through hole 723 of the second bracket 72, the clamp hole 66 of the pipe clamp 6, the first through hole 713 of the first bracket 71, and another washer before being fastened via the nut 74.

[0034] like Figure 3 As shown, the fastening assembly may also include a spacer 75 disposed within the pipe clamp hole 66. The spacer 75 is a cylindrical structure with openings at both ends, its outer diameter matching the inner diameter of the pipe clamp hole 66, and its inner diameter matching the diameter of the bolt 73. Compared to the length of the pipe clamp hole 66, that is, the length of the pipe clamp 6 in the lateral direction, the length of the spacer 75 is slightly shorter, thereby allowing for a margin for compression of the pipe clamp 6.

[0035] This utility model also provides a working machine including the above-mentioned pilot control device.

[0036] Industrial applicability

[0037] The pilot control device according to this invention is particularly suitable for operating machinery with pilot-operated hydraulic control systems, such as bulldozers, excavators, and loaders. However, it should be understood that the pilot control device according to this invention can also be applied to other equipment with pilot-operated hydraulic control systems.

[0038] The following is combinedFigures 1-4 The following describes in detail the exemplary assembly process of the pilot control device according to the above embodiments.

[0039] First, the multiple clamping parts 63 of the pipe clamp 6 can be spread apart by a certain distance, and the multiple pilot hoses 5 connected to the multi-way valve at one end can be placed into the pipe hole 61 formed by the corresponding half hole 65 between the corresponding pair of clamping parts 63.

[0040] Then, with the two spacers 75 respectively inserted into the corresponding clamp holes 66, the first bracket 71 and the second bracket 72 are placed on both sides of the clamp 6 along the compression direction, such that the clamp fitting portion 711 of the first bracket 71 and the clamp fitting portion 721 of the second bracket 72 are respectively fitted to both sides of the clamp 6. The bolt 73 is then removed from... Figure 2 and Figure 3 The right side of the tube clamp passes through the second through hole 723 on the second bracket 72, the spacer 75, and the first through hole 713 on the first bracket 71, and is then secured with a nut 74. Thus, the first bracket 71 and the second bracket 72 compress the tube clamp 6.

[0041] Fasteners 8 are passed through the first fixing hole 714 on the floor fitting part 712 of the first bracket 71 and the second fixing hole 724 on the floor fitting part 722 of the second bracket 72, respectively, to fix the first bracket 71 and the second bracket 72 to the corresponding positions on both sides of the floor opening.

[0042] Finally, the other end of the pilot hose 5, which has a certain length reserved above the floor, is connected to the control handle 4, and the control handle 4 is installed on the control box 3 fixed to one side of the seat 1.

[0043] By mounting the control handle 4 to one side of the seat 1 and allowing it to move with the seat 1, the pilot control device according to the above embodiment improves operating comfort. Furthermore, by using a bracket 7 made of rigid material to press against a tube clamp 6 made of flexible material, thereby clamping the pilot hose 5, which has a certain length reserved above the floor, a reliable seal and fixation of the pilot hose 5 at the floor can be achieved, preventing the pilot hose 5 from shifting up and down when the control handle 4 moves with the seat 1.

[0044] When it is necessary to adjust the reserved length of the pilot hose 5 above the floor, the nut 74 can be loosened, and the pilot hose 5 can be pulled for adjustment. If necessary, the fastener 8 can also be unscrewed to move the first bracket 71 and the second bracket 72 away from the pipe clamp 6.

[0045] Various modifications and variations can be made to the embodiments disclosed above without departing from the scope or spirit of this invention. Other embodiments of this invention will be apparent to those skilled in the art based on the practice of this invention disclosed in this specification. This specification and the examples disclosed herein should be considered illustrative only, and the true scope of this invention is defined by the appended claims and their equivalents.

Claims

1. A pilot control device, characterized by comprising: The pilot control device comprises: a control handle (4) mounted on one side of the seat (1) and movable with the seat; a plurality of pilot hoses (5) passing through an opening in the floor and comprising a first section connected to the control handle (4) and a second section located below the floor; a tube clamp (6) made of flexible material, provided with a plurality of tube holes (61) for the pilot hoses (5) to pass through, respectively; and a bracket (7) made of rigid material, connected to the floor at the periphery of the opening and configured to press the tube clamp (6) to seal and fix the pilot hoses (5) that are reserved a certain length above the floor to the opening by the tube clamp, wherein the tube clamp (6) comprises a connecting portion (62) and a plurality of clamping portions (63) extending to the same side from the connecting portion, which are arranged side by side in the pressing direction and formed integrally with the connecting portion.

2. The pilot control device according to claim 1, characterized by Opposite side walls of two adjacent clamping portions (63) are respectively provided with half holes (65) to form the tube holes (61).

3. A pilot control device according to claim 1 or 2, characterised in that, The bracket (7) comprises a first bracket (71) and a second bracket (72) arranged on both sides of the tube clamp (6) in the pressing direction, and a fastening assembly is locked after passing through the first bracket, the tube clamp and the second bracket to press the tube clamp.

4. A pilot control device according to claim 3, characterised in that, The first bracket (71) and the second bracket (72) each comprise a tube clamp fitting portion (711, 721) and a floor fitting portion (712, 722) formed integrally, each tube clamp fitting portion (711, 721) is detachably fixed with the tube clamp (6) via the fastening assembly, and each floor fitting portion (712, 722) is detachably fixed with the floor.

5. A pilot control device according to claim 4, characterised in that, The tube clamp (6) is provided with a tube clamp hole (66) extending in the pressing direction, the tube clamp fitting portions (711, 721) of the first bracket (71) and the second bracket (72) are respectively provided with a first through hole (713) and a second through hole (723) corresponding to the tube clamp hole (66), and the fastening assembly comprises a bolt (73) and a nut (74), the bolt passes through the first through hole, the tube clamp hole and the second through hole and is fastened via the nut.

6. A pilot control device according to claim 5, characterised in that, The fastening assembly further comprises a spacer sleeve (75) provided in the tube clamp hole (66) for the bolt (73) to pass through, and the length of the spacer sleeve (75) is less than the length of the tube clamp hole (66).

7. The pilot control device of claim 4, wherein The floor fitting portions (712, 722) of the first bracket (71) and the second bracket (72) extend towards the side away from the tube clamp (6) and are respectively provided with a first fixing hole (714) and a second fixing hole (724), and a fastener (8) passes through the first fixing hole and the second fixing hole to fix the first bracket and the second bracket to the floor, respectively.

8. The pilot control device of claim 4, wherein The tube clamp (6) protrudes from the floor fitting portions (712, 722) in the direction towards the underside of the floor.

9. A work machine characterized by, The pilot control device comprises: a control handle (4) mounted on one side of the seat (1) and movable with the seat; a plurality of pilot hoses (5) passing through an opening in the floor and comprising a first section connected to the control handle (4) and a second section located below the floor; a tube clamp (6) made of flexible material, provided with a plurality of tube holes (61) for the pilot hoses (5) to pass through, respectively; and a bracket (7) made of rigid material, connected to the floor at the periphery of the opening and configured to press the tube clamp (6) to seal and fix the pilot hoses (5) that are reserved a certain length above the floor to the opening by the tube clamp, wherein the tube clamp (6) comprises a connecting portion (62) and a plurality of clamping portions (63) extending to the same side from the connecting portion, which are arranged side by side in the pressing direction and formed integrally with the connecting portion. Opposite side walls of two adjacent clamping portions (63) are respectively provided with half holes (65) to form the tube holes (61). The bracket (7) comprises a first bracket (71) and a second bracket (72) arranged on both sides of the tube clamp (6) in the pressing direction, and a fastening assembly is locked after passing through the first bracket, the tube clamp and the second bracket to press the tube clamp. The first bracket (71) and the second bracket (72) each comprise a tube clamp fitting portion (711, 721) and a floor fitting portion (712, 722) formed integrally, each tube clamp fitting portion (711, 721) is detachably fixed with the tube clamp (6) via the fastening assembly, and each floor fitting portion (712, 722) is detachably fixed with the floor. The tube clamp (6) is provided with a tube clamp hole (66) extending in the pressing direction, the tube clamp fitting portions (711, 721) of the first bracket (71) and the second bracket (72) are respectively provided with a first through hole (713) and a second through hole (723) corresponding to the tube clamp hole (66), and the fastening assembly comprises a bolt (73) and a nut (74), the bolt passes through the first through hole, the tube clamp hole and the second through hole and is fastened via the nut. The fastening assembly further comprises a spacer sleeve (75) provided in the tube clamp hole (66) for the bolt (73) to pass through, and the length of the spacer sleeve (75) is less than the length of the tube clamp hole (66). The floor fitting portions (712, 722) of the first bracket (71) and the second bracket (72) extend towards the side away from the tube clamp (6) and are respectively provided with a first fixing hole (714) and a second fixing hole (724), and a fastener (8) passes through the first fixing hole and the second fixing hole to fix the first bracket and the second bracket to the floor, respectively. The tube clamp (6) protrudes from the floor fitting portions (712, 722) in the direction towards the underside of the floor. The pilot control device comprises: a control handle (4) mounted on one side of the seat (1) and movable with the seat; a plurality of pilot hoses (5) passing through an opening in the floor and comprising a first section connected to the control handle (4) and a second section located below the floor; a tube clamp (6) made of flexible material, provided with a plurality of tube holes (61) for the pilot hoses (5) to pass through, respectively; and a bracket (7) made of rigid material, connected to the floor at the periphery of the opening and configured to press the tube clamp (6) to seal and fix the pilot hoses (5) that are reserved a certain length above the floor to the opening by the tube clamp, wherein the tube clamp (6) comprises a connecting portion (62) and a plurality of clamping portions (63) extending to the same side from the connecting portion, which are arranged side by side in the pressing direction and formed integrally with the connecting portion.

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