Bidirectional sliding elbow support of engineering machinery cab

Abstract

The invention provides an engineering machinery cab bidirectional sliding elbow support in the technical field of engineering machinery cab internal structures, which comprises an elbow support pad, the elbow support pad is connected to a cab framework through a bidirectional sliding frame, and the elbow support pad can slide back and forth through the bidirectional sliding frame under the action of external force. A storage space is formed in the trim at the bottom of the elbow support pad; the front end of the two-way sliding frame is attracted to the cab framework through a magnetic assembly, and the rear end of the two-way sliding frame is hinged to the cab framework through a hinge assembly. Through the connection design of the elbow support pad and the bidirectional sliding frame, the ergonomic problem of repeated friction between the elbow and the elbow support pad when a driver pushes and pulls the handle back and forth is solved; the two-way sliding function and the overturning function are achieved, the front-back two-way sliding function has the automatic reset function, the overturning function has the opening angle limiting function, operation of a driver is facilitated, and the space utilization rate of a cab is increased; wherein quick-wear parts are standard parts, so that good interchangeability is achieved, and the assembly structure is simple and convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of structures in a cab of an engineering machinery, and more specifically, relates to a bidirectional sliding elbow support for a cab of an engineering machinery. Background Art

[0002] At present, most elbow supports in the cabs of construction machinery and industrial vehicles are fixed structures, that is, the foamed elbow support pads are fixed to the armrest box or the cab frame by screws or bolts. This design will waste the cab space. In addition, when the driver pushes and pulls the control handle, the elbow will repeatedly rub against the elbow support pad. On the one hand, this design will accelerate the wear of the elbow support pad, and on the other hand, it will directly affect the driving experience, especially in hot weather conditions, when the skin is in direct contact with the elbow support pad.

[0003] The elbow pads in the prior art include fixed type, flip type and unidirectional sliding type, but none of the above elbow pads solves the ergonomic problem of repeated friction between the elbow and the elbow support pad, and does not take into account the multiple needs of the driver, making it inconvenient to operate. Summary of the invention

[0004] The purpose of the present invention is to provide a bidirectional sliding elbow support for an engineering machinery cab in view of the above shortcomings, so as to solve the ergonomic problem of repeated friction between the driver's elbow and the elbow support pad when the driver pushes and pulls the handle forward and backward.

[0005] To achieve the above object, the present invention is implemented by the following technical solutions: The invention provides a bidirectional sliding elbow support for an engineering machinery cab, comprising an elbow pad, which is connected to a cab frame through a bidirectional sliding frame and can slide back and forth through the bidirectional sliding frame under the action of external force.

[0006] Furthermore, the bidirectional sliding frame includes a first supporting structure for connecting the elbow pad and a second supporting structure for connecting the cab frame, and the first supporting structure and the second supporting structure are slidably connected via a bidirectional sliding assembly.

[0007] Furthermore, the bidirectional sliding assembly includes an optical axis and a linear bearing sleeved on the optical axis, the two ends of the first supporting structure are fixedly connected to the two ends of the optical axis, and the linear bearing is fixedly connected to the second supporting structure through a bearing seat; springs are respectively sleeved on the optical axis at both ends of the linear bearing; and a positioning buffer structure is provided between the first supporting structure and the bearing seat.

[0008] Furthermore, the positioning buffer structure includes a positioning ball, and the bottom surface of the first supporting structure is provided with a limiting hole that cooperates with the ball of the positioning ball. The ball of the positioning ball is embedded in the limiting hole on the bottom surface of the first supporting structure in a natural state, and the end of the positioning ball away from the ball is installed on the bearing seat in the form of a transition fit.

[0009] Furthermore, the two-way sliding components are provided in two groups, which are arranged in parallel on the same horizontal plane.

[0010] Furthermore, the elbow pad includes an elbow frame and a foam filling material wrapping the elbow frame, and a round bracket for connecting to the first supporting structure is installed on the elbow frame.

[0011] Furthermore, a thread for installing a steel sleeve is provided inside the circular mount, and after the steel sleeve passes through the circular mount, it is passed through the first connecting piece and connected to the first supporting structure.

[0012] Furthermore, the interior decoration at the bottom of the elbow pad is provided with a storage space; the front end of the second supporting structure is adsorbed to the cab frame through a magnetic component, and the rear end is hinged to the cab frame through a hinge component.

[0013] Furthermore, the magnetic component includes a magnet nested in an elastic buffer sleeve, and the magnet and the shell of the storage space are penetrated by a sixth connecting piece and connected to the cab frame.

[0014] Furthermore, the articulated assembly includes a hinge, one side of which is fixedly connected to the second supporting structure, and the other side of which is penetrated by a fifth connecting member and connected to the cab frame through the shell of the storage space.

[0015] Furthermore, the elbow support pad limits the flipping angle by an angle limiter; The angle limiter is a limit hinge for the hinge; Alternatively, the angle limiting member is a limiting cable connected between the second supporting structure and the cab frame.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The invention solves the ergonomic problem of repeated friction between the elbow and the elbow support pad when the driver pushes and pulls the handle forward and backward through the connection design of the elbow support pad and the bidirectional sliding frame. The elbow support pad of the present invention has both bidirectional sliding and flipping functions. The front and rear bidirectional sliding has an automatic reset function, and the flipping has an opening angle limiting function, which is convenient for the driver to operate and improves the space utilization rate of the cab. The wearing parts in the present invention are all standard parts, such as linear bearings as sliding parts, which, on the one hand, improve the reliability of the overall structure of the elbow support, and on the other hand, have good interchangeability, make the assembly structure simple, and facilitate maintenance, thereby increasing the overall service life as much as possible and making it more suitable for the working conditions of engineering machinery and industrial vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The spatial position relationship between the elbow rest and the control handle in the cab interior; Figure 2 A schematic structural diagram of a bidirectional sliding elbow support provided by an embodiment of the present invention; Figure 3 is a schematic structural diagram of the elbow support pad described in the embodiment; Figure 4 It is a structural schematic diagram of the bidirectional sliding frame described in the embodiment; Figure 5 It is a partial structural schematic diagram of the bidirectional sliding frame described in the embodiment; Figure 6 It is a schematic diagram of the structural decomposition of the bidirectional sliding frame described in the embodiment; Figure 7 The initial state of the positioning beads described in the embodiment; Figure 8 It is a structural schematic diagram of the limit hinge described in the embodiment; Fig. 9 It is a schematic structural diagram of the position-limiting zipper described in the embodiment.

[0018] In the figure: 1. operating handle; 2. cab interior; 3. elbow support; 31. elbow support pad; 311. foam filling material; 312. round sling; 313. elbow support frame; 32. two-way sliding frame; 321. second connecting piece; 322. elbow support mounting plate; 323. positioning beads; 324. sliding frame bottom plate; 325. bearing seat; 326. linear bearing; 327. optical axis; 328. spring; 329; third connecting piece; 3210. fourth connecting piece; 33. steel sleeve; 34. fifth connecting piece; 35. hinge; 351. limit cable; 36. sixth connecting piece; 37. rubber sleeve; 38. magnet; 39. first connecting piece; 4. cab frame; 5. storage space. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention will be described in more detail below in conjunction with the accompanying drawings and specific examples.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0022] Example 1 like Figure 1 As shown, in the cab interior 2 of the engineering machinery, the operating handle 1 and the elbow rest 3 are installed in a front-to-back relationship in space. When the operating handle 1 is swung forward and backward at an angle, the elbow rest 3 slides in the horizontal direction relying on the friction between the elbow and the elbow rest 3.

[0023] This embodiment provides a bidirectional sliding elbow support for a construction machinery cab, such as Figure 2 As shown, the elbow pad 31 is connected to the cab frame 4 through a two-way sliding frame 32. The elbow pad 31 can slide back and forth through the two-way sliding frame 32 under the action of external force. The interior decoration at the bottom of the elbow pad 31 is provided with a storage space 5; the front end of the two-way sliding frame 32 is adsorbed on the cab frame 4 through a magnetic component, and the rear end is hinged to the cab frame 4 through a hinge component.

[0024] like Figure 3 As shown, in this embodiment, the elbow pad 31 includes an elbow frame 313 and a foam filling material 311 wrapping the elbow frame 313 , a round strap 312 is welded on the elbow frame 313 , and a thread is provided inside the round strap 312 for installing the steel sleeve 33 .

[0025] like Figure 4As shown, in this embodiment, the bidirectional sliding frame 32 includes an elbow support mounting plate 322 (i.e., a first supporting structure) for connecting the elbow drag pad 31 and a sliding frame bottom plate 324 (i.e., a second supporting structure) for connecting the cab frame 4, and the elbow support mounting plate 322 and the sliding frame bottom plate 324 are slidably connected via a bidirectional sliding assembly.

[0026] In this embodiment, the steel sleeve 33 passes through the round bracket 312 on the elbow support pad 31 and then uses the first connecting member 39 to connect the elbow support pad 31 to the elbow support mounting plate 322. Figure 2 shown.

[0027] like Figure 5 and Figure 6 As shown, in this embodiment, the bidirectional sliding assembly includes an optical axis 327 and a linear bearing 326 sleeved on the optical axis 327, the two ends of the elbow support mounting plate 322 are fixedly connected to the two ends of the optical axis 327 through a second connecting member 321, the linear bearing 326 is installed on the bearing seat 325 through a third connecting member 329, and the bearing seat 325 is fixedly connected to the sliding frame bottom plate 324 through a fourth connecting member 3210; springs 328 are respectively sleeved on the optical axis 327 at both ends of the linear bearing 326; a positioning buffer structure is provided between the elbow support mounting plate 322 and the bearing seat 325.

[0028] In this embodiment, two groups of optical axes 327 are provided and are arranged in parallel on the same horizontal plane to prevent the elbow support pad 31 from tipping over and ensure the balance and stability of the elbow support.

[0029] like Figure 2 and Figure 8 As shown, in this embodiment, the interior decoration at the bottom of the elbow pad 31 is provided with a storage space 5; the front end of the sliding frame bottom plate 324 is adsorbed on the cab frame 4 through a magnetic component, and the rear end is hinged to the cab frame 4 through a hinge component; an angle limiter is also provided between the sliding frame bottom plate 324 and the cab frame 4 to limit the flipping angle of the elbow pad 31.

[0030] Through the above design, when the driver manipulates the handle 1, the friction between the elbow and the elbow support pad 31 can drive the elbow support 3 to slide in both directions. After the elbow leaves the elbow support pad 31, the spring 328 at the compressed end extends to push the elbow support pad 31 back, and the positioning buffer structure stops the elbow support pad 31 at the default position and eliminates the shock caused by the spring 328; when the elbow support 3 needs to be flipped, the driver needs to provide a reaction force greater than the attraction between the magnetic component and the bottom plate 324 of the sliding frame to rotate the elbow support 3 around the center of the hinge assembly shaft; when it is opened to the set angle, the angle limiter will prevent the elbow support 3 from further rotating; when the elbow support 3 is closed, its own gravity and the attraction between the magnetic component and the bottom plate 324 of the sliding frame realize the closure of the elbow support 3.

[0031] In this embodiment, the first connecting member 39 , the second connecting member 321 , the third connecting member 329 and the fourth connecting member 3210 may be common mechanical connecting members such as bolts or screws.

[0032] Example 2 This embodiment provides a bidirectional sliding elbow support for a cab of an engineering machinery. Based on the base material of Embodiment 1, the technical solution is further refined to provide a better technical effect.

[0033] In this embodiment, Figure 7 As shown, the positioning and buffering structure includes a positioning ball 323, and the bottom surface of the elbow support mounting plate 322 is provided with a limiting hole that matches the ball of the positioning ball 323. The ball of the positioning ball 323 is embedded in the limiting hole on the bottom surface of the elbow support mounting plate 322 in a natural state, and the end of the positioning ball 323 away from the ball is installed on the bearing seat 325 in the form of transition fit. When the elbow support pad 31 moves forward and backward under the friction force of the elbow, the positioning ball 323 is pressed and rolls on the lower surface of the elbow support mounting plate 322; when the elbow leaves the elbow support pad 31, the pressure end spring 328 extends to push the elbow support pad 31 back, and the ball of the positioning ball 323 is stuck in the limiting hole on the elbow support mounting plate 322 to prevent further sliding and eliminate the shock caused by the spring 328.

[0034] In this embodiment, Figure 2 As shown, the hinge assembly includes a hinge 35, one side of which is fixedly connected to the sliding frame bottom plate 324, and the other side is connected to the housing of the storage space 5 by a fifth connecting piece 34 and connected to the cab frame 4; the magnetic assembly includes a strong magnet 38 nested in a rubber sleeve 37, and the magnet 38 is countersunk and connected to the housing of the storage space 5 by a sixth connecting piece 36. When the elbow support pad 31 is lifted, it rotates around the rotating shaft of the hinge 35. Since the elbow support pad 31 has a foam structure on the surface, no opening limit structure is provided. The elbow support pad 31 can freely rotate and fall from the lifted state to the closed state. During the falling process, the sliding frame bottom plate 324 compresses the rubber sleeve 37 and the strong magnet 38 is adsorbed to achieve closure; when the elbow support 3 is closed, its own gravity and the attraction between the strong magnet 38 and the bottom plate sliding frame bottom plate 324 overcome the elastic force of the rubber sleeve 37 to achieve closure, and ensure that the sliding frame bottom plate 324 does not collide with the strong magnet 38.

[0035] In this embodiment, the hinge 35 is as follows Figure 8 The limiting hinge shown as an angle limiting member can limit the turning angle of the toggle tray 3.

[0036] In some other embodiments, the angle limiter may also be a limiter cable 351 connected between the sliding frame bottom plate 324 and the cab frame 4, such as Fig. 9 shown.

[0037] In this embodiment, the fifth connecting member 34 and the sixth connecting member 36 may be common mechanical connecting members such as bolts or screws.

[0038] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Without departing from the scope and technical principles of the described embodiments, many modifications and changes are obvious to those of ordinary skill in the art, and these modifications and changes should also be regarded as the scope of protection of the present invention.

Claims

1. A bidirectional sliding elbow support for an engineering machinery cab, characterized in that: The elbow pad (31) is connected to a cab frame (4) via a bidirectional sliding frame (32); the elbow pad (31) can slide back and forth via the bidirectional sliding frame (32) under the action of an external force.

2. The bidirectional sliding elbow support for the engineering machinery cab according to claim 1 is characterized in that: The bidirectional sliding frame (32) comprises a first supporting structure for connecting the elbow pad (31) and a second supporting structure for connecting the cab frame (4); the first supporting structure and the second supporting structure are slidably connected via a bidirectional sliding assembly.

3. The bidirectional sliding elbow support for the engineering machinery cab according to claim 2 is characterized in that: The bidirectional sliding assembly comprises an optical axis (327) and a linear bearing (326) sleeved on the optical axis (327); two ends of the first supporting structure are fixedly connected to two ends of the optical axis (327); the linear bearing (326) is fixedly connected to the second supporting structure via a bearing seat (325); springs (328) are respectively sleeved on the optical axis (327) at two ends of the linear bearing (326); and a positioning buffer structure is provided between the first supporting structure and the bearing seat (325).

4. The bidirectional sliding elbow support for the engineering machinery cab according to claim 3 is characterized in that: The positioning buffer structure comprises a positioning bead (323); the bottom surface of the first supporting structure is provided with a limiting hole matched with a ball of the positioning bead (323); the ball of the positioning bead (323) is embedded in the limiting hole of the bottom surface of the first supporting structure in a natural state; and the end of the positioning bead (323) away from the ball is mounted on the bearing seat (325) in the form of a transition fit.

5. The bidirectional sliding elbow support for the engineering machinery cab according to claim 2, characterized in that: The two-way sliding components are provided with two groups, which are arranged in parallel on the same horizontal plane.

6. The bidirectional sliding elbow support for the engineering machinery cab according to claim 2, characterized in that: The elbow pull pad (31) comprises an elbow pull frame (313) and a foamed filling material (311) wrapping the elbow pull frame (313); a round bridge (312) for connecting to a first supporting structure is installed on the elbow pull frame (313).

7. The bidirectional sliding elbow support for the engineering machinery cab according to claim 6, characterized in that: The circular ledge (312) is provided with a thread for installing the steel sleeve (33); the steel sleeve (33) passes through the circular ledge (312) and is then passed through by the first connecting member (39) and connected to the first supporting structure.

8. The bidirectional sliding elbow support for the engineering machinery cab according to claim 2, characterized in that: The interior decoration at the bottom of the elbow pad (31) is provided with a storage space (5); the front end of the second support structure is adsorbed on the cab frame (4) via a magnetic component, and the rear end is hinged to the cab frame (4) via a hinge component.

9. The bidirectional sliding elbow support for the engineering machinery cab according to claim 8, characterized in that: The magnetic assembly comprises a magnet (38) nested in an elastic buffer sleeve, and the magnet (38) and the shell of the storage space (5) are penetrated by a sixth connecting piece (36) and connected to the cab frame (4).

10. The bidirectional sliding elbow support for the engineering machinery cab according to claim 8, characterized in that: The hinge assembly comprises a hinge (35), one side of the hinge (35) is fixedly connected to the second support structure, and the other side of the hinge (35) is penetrated by a fifth connecting member (34) and connected to the cab frame (4) through the shell of the storage space (5).

11. The bidirectional sliding elbow support for the engineering machinery cab according to claim 8, characterized in that: The elbow support pad (31) limits the turning angle by means of an angle limiter; The angle limiting member is a limiting hinge for the hinge (35); Alternatively, the angle limiting member is a limiting cable (351) connected between the second supporting structure and the cab frame (4).

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