Engineering machinery steering gear box

Abstract

The utility model discloses an engineering machinery steering gear box which comprises a cover plate A, a steering gear box tubular column, a shell A, a shell B, a steering wheel, a pedal assembly, a combination switch, a rocker switch and a wiring harness, the cover plate A is connected with the shell A and the shell B, one end of the steering gear box tubular column penetrates through the cover plate A and then is connected with the steering wheel, and the other end of the steering gear box tubular column is connected with the pedal assembly. The shell A is connected with the shell B. The combination switch is connected with the steering gear box tubular column, and the rocker switch is connected with the cover plate A. According to the utility model, through the icon cover plate A and the icon cover plate B, an alarm state can be presented on the top of the steering gear box in time, which is convenient for operators to pay attention; a detachable carbon fiber decorative cover plate is adopted at the top of the steering gear, so that overhaul and maintenance are facilitated; screws of the shell A and the shell B are fixed in the same direction and shielded by rubber sealing pieces, and the bottom end of the steering gear box tubular column is connected and reinforced through ribs, so that the problem of cracking of the tubular column can be effectively avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of steering machines, in particular to a steering machine for engineering machinery. Background Art

[0002] Existing steering gears on construction machinery often use exposed screws for fastening, which are prone to corrosion and rust, shortening their lifespan and compromising their aesthetics. The indicator lights on the steering gears cannot be changed in a variety of ways. The rocker switches are fixed and difficult to remove, making them difficult to inspect and maintain. Furthermore, the internal steering column structure is susceptible to breakage. Therefore, a steering gear that can address these technical issues is needed.

[0003] Patent document CN110239613A discloses an angle- and height-adjustable steering gear, comprising a steering wheel, an upper housing, a lower housing, and a steering column outer wall. The steering wheel is disposed at the upper end of the steering column outer wall; a height axis is further provided, the lower end of which is connected to a transmission shaft, both of which are disposed within the steering column outer wall; a height adjustment switch is disposed at the upper portion of the height axis; an angle adjustment unit is connected to the lower portion of the steering column outer wall, the angle adjustment unit being connected to a gas spring, the upper portion of which is connected to the middle portion of the steering column outer wall; the angle adjustment unit comprises a base plate, flanked by side plates, the upper portions of which are fixedly connected to an arch bridge, the upper portion of which is fixedly connected to the steering column outer wall; a universal joint is disposed within the arch bridge, the upper end of the universal joint being connected to the transmission shaft, and the lower end of the universal joint being provided with a spline shaft. The angle adjustment unit allows adjustment of the steering gear angle, while the height axis allows adjustment of the steering gear height. However, the structure of the detachable rocker switch is not disclosed. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a steering machine for engineering machinery.

[0005] The utility model is achieved through the following technical solutions.

[0006] The utility model provides a steering gear for engineering machinery, comprising a cover plate A, a steering gear column, a housing A, a housing B, a steering wheel, a pedal assembly, a combination switch, a rocker switch and a wiring harness, wherein the cover plate A is connected to the housing A and the housing B, one end of the steering gear column passes through the cover plate A and is connected to the steering wheel, the other end of the steering gear column is connected to the pedal assembly, the housing A is connected to the housing B, the steering gear column and the wiring harness are arranged between the housing A and the housing B, the combination switch is connected to the steering gear column, the rocker switch is connected to the cover plate A, and the wiring harness is respectively connected to the cover plate A, the combination switch and the rocker switch.

[0007] Preferably, a gas spring is provided on the pedal assembly, one end of the gas spring is hinged to the pedal assembly, and the other end of the gas spring is hinged to the steering column. A protective cover is provided on the pedal of the pedal assembly, and the bottom end of the steering column is connected to the pedal assembly with a reinforcing rib.

[0008] Preferably, a cover plate B and a cover plate C are respectively provided on both sides of the pedal assembly, the pedal passes through the cover plate B and the cover plate C and extends out, and a spline is provided at the bottom of the pedal assembly.

[0009] Preferably, the rocker switch includes a frame A, a frame B, a switch A, a switch B, a switch C and a switch D. The frame A and the frame B are connected, and the switch A, the switch B, the switch C and the switch D are connected through the frame B and the frame A in sequence.

[0010] Preferably, a groove A and an installation groove A are provided on the shell A, the grooves A are provided on both sides of the shell A, the installation groove A is provided on the upper front of the shell A, and the shell A is connected to the rocker switch through the installation groove A.

[0011] Preferably, a groove B and a screw hole A are provided on the shell B, and the groove B is provided on both sides of the shell B. The shell B is connected and fastened with the corresponding screw holes of the shell A after the screw assembly A and the screw assembly B pass through the screw hole A, and a seal is provided at the screw assembly A and the screw assembly B.

[0012] Preferably, an icon cover A, an icon cover B and a mounting slot B are provided on the cover A, and the cover A is fastened to the shell A and the shell B by screws A.

[0013] Preferably, a handle is provided on the steering wheel, and the handle is rotatably connected to the steering wheel.

[0014] The beneficial effects of the present invention are:

[0015] This utility model uses icon covers A and B to promptly display alarm status on the top of the steering gear, facilitating operator attention. A removable carbon fiber decorative cover is also featured on the top of the steering gear for easy inspection and maintenance. The screws securing the housings A and B are aligned and concealed with rubber seals. Ribs are used to reinforce the bottom end of the steering column, effectively preventing column cracking. This steering gear offers advantages such as high operational reliability, extended durability, a high level of protection, and improved ergonomics. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an exploded view of the utility model;

[0017] Figure 2 It is a structural diagram of the utility model;

[0018] Figure 3 It is a structural diagram of the utility model;

[0019] Figure 4 It is a structural diagram of the housing A of the present utility model;

[0020] Figure 5 It is a structural diagram of the housing A of the present utility model;

[0021] Figure 6 It is a structural diagram of the housing B of the present utility model;

[0022] Figure 7 This is a structural diagram of the rocker switch of the utility model;

[0023] Figure 8 This is a structural diagram of the cover A of the utility model;

[0024] Figure 9 This is a structural diagram of the cover A of the utility model;

[0025] Figure 10 This is a structural diagram of the cover A of the utility model;

[0026] Figure 11 This is a structural diagram of the steering column and pedal assembly of the utility model;

[0027] In the figure: 1-cover A, 101-mounting slot B, 2-icon cover A, 3-icon cover B, 4-frame A, 5-frame B, 6-switch A, 7-switch B, 8-switch C, 9-switch D, 10-steering column, 11-combination switch, 12-wiring harness, 13-housing A, 131-groove A, 132-mounting slot A, 14-screw A, 15-screw assembly A, 16-housing B, 161-groove B, 162-screw hole A, 18-cover B, 19-cover C, 20-steering wheel, 201-handle, 21-seal, 22-screw assembly B, 23-spline, 25-pedal assembly, 251-pedal, 26-protective cover, 27-gas spring. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the described solution.

[0029] Example:

[0030] like Figures 1 to 11As shown, a steering gear for construction machinery includes a cover plate A1, a steering column 10, a housing A13, a housing B16, a steering wheel 20, a pedal assembly 25, a combination switch 11, a rocker switch, and a wiring harness 12. The cover plate A1 is connected to the housing A13 and the housing B16. One end of the steering column 10 passes through the cover plate A1 and is connected to the steering wheel 20. The other end of the steering column 10 is connected to the pedal assembly 25. The housing A13 is connected to the housing B16. The steering column 10 and the wiring harness 12 are arranged between the housings A13 and B16. The combination switch 11 is connected to the steering column 10, and the rocker switch is connected to the cover plate A1. The wiring harness 12 is connected to the cover plate A1, the combination switch 11, and the rocker switch respectively. The wiring harness 12 has a separate tap to connect to the construction machinery connected to the steering gear. Most components of the steering gear are protected by the housings A13 and B16. The combination switch 11 is responsible for controlling the gear position, wiper, horn and other functions of the engineering machinery. The rocker switch can be replaced with an intelligent key panel to achieve more operating functions.

[0031] The pedal assembly 25 is equipped with a gas spring 27, one end of which is hinged to the pedal assembly 25, and the other end of which is hinged to the steering column 10. A protective cover 26 is provided on the pedal 251 of the pedal assembly 25 to protect the pedal 251. By stepping on the pedal 251, the pedal assembly 25 controls the extension and retraction of the gas spring 27, thereby tilting the steering column 10, specifically the steering gear. The bottom end of the steering column 10 is reinforced with ribs to effectively prevent cracking.

[0032] Cover plates B18 and C19 are respectively provided on both sides of the pedal assembly 25, which protect the pedal assembly 25. The pedal 251 passes through the cover plates B18 and C19 and extends out. A spline 23 is provided at the bottom of the pedal assembly 25, which is connected to the corresponding gear of the engineering machinery to realize the control of the steering machine over the engineering machinery.

[0033] When in use, step on the pedal 251 without loosening it, adjust the steering gear tilt angle forward, ensure that the angle can be freely adjusted without sticking, and after loosening the pedal 251, it can stop at any angle within the adjustable range; step on the pedal 251 without loosening it, adjust the steering gear tilt angle to the maximum angle, and after loosening the pedal 251, the upper section of the steering gear stops at the maximum angle, and step on the pedal 251 again, the upper section of the steering gear can automatically return to the starting position, that is, the automatic rebound function.

[0034] The rocker switch includes frame A4, frame B5, switches A6, B7, C8, and D9. Frame A4 is connected to frame B5, and switches A6, B7, C8, and D9 run through frame B5 and connect to frame A4. Switch A6 is a crisis signal switch, switch B7 is an operating mode switch, switch C8 is a flat mode switch, and switch D9 is a parking mode switch. Wiring harness 12 connects to each of the four switches via four separate connectors.

[0035] The housing A13 is provided with grooves A131 and mounting grooves A132. Grooves A131 are located on both sides of the housing A13, while mounting grooves A132 are located on the upper front of the housing A13. The housing A13 is connected to the rocker switch frame A4 via mounting grooves A132. The mounting grooves A132 are located in the same position as the mounting grooves B101.

[0036] A groove B161 and a screw hole A162 are provided on the shell B16, and the groove B161 is provided on both sides of the shell B16. The shell B16 is connected and fastened with the corresponding screw holes of the shell A13 after the screw assembly A15 and the screw assembly B22 pass through the screw hole A162. A seal 21 is provided at the screw assembly A15 and the screw assembly B22, and corresponding seals 21 are also provided at other screw holes to prevent the screw assembly A15 and the screw assembly B22 from rusting or being damaged. The seal 21 is made of rubber. The position of the groove B161 is provided corresponding to the groove A131, and the combination switch 11 extends to the outside through the opening formed by the groove B161 and the groove A131.

[0037] Cover A1 is equipped with an icon cover A2, an icon cover B3, and a mounting slot B101. Cover A1 is secured to housings A13 and B16 via screws A14. Icon covers A2 and B3 display desired graphics, such as turn signal status, construction machinery status, and lighting status. Alarm status can also be displayed, facilitating operator assessment of the overall status of the construction machinery. A rocker switch extends through cover A1 via mounting slot B101 and into mounting slot A132. Cover A1 is made of carbon fiber, offering excellent durability and aesthetic appeal. Cover A1 is removable, allowing the rocker switch to be removed for easy inspection and maintenance.

[0038] A handle 201 is provided on the steering wheel 20 , and the handle 201 is rotatably connected to the steering wheel 20 . The handle 201 is provided to facilitate operation of the steering wheel 20 .

[0039] This steering machine is suitable for use on wheel excavators.

Claims

1. A steering gear for engineering machinery, characterized in that: The invention comprises a cover plate A (1), a steering column (10), a housing A (13), a housing B (16), a steering wheel (20), a pedal assembly (25), a combination switch (11), a rocker switch and a wiring harness (12). The cover plate A (1) is connected to the housing A (13) and the housing B (16). One end of the steering column (10) passes through the cover plate A (1) and is connected to the steering wheel (20). The other end of the steering column (10) is connected to the pedal assembly (25). The housing A (13) is connected to the housing B (16). The steering column (10) and the wiring harness (12) are arranged between the housing A (13) and the housing B (16). The combination switch (11) is connected to the steering column (10). The rocker switch is connected to the cover plate A (1). The wiring harness (12) is respectively connected to the cover plate A (1), the combination switch (11) and the rocker switch.

2. The engineering machinery steering machine according to claim 1, characterized in that: A gas spring (27) is provided on the pedal assembly (25), one end of the gas spring (27) is hinged to the pedal assembly (25), and the other end of the gas spring (27) is hinged to the steering column (10). A protective cover (26) is provided on the pedal (251) of the pedal assembly (25), and the bottom end of the steering column (10) is connected to the pedal assembly (25) by a reinforcing rib.

3. The engineering machinery steering machine according to claim 2, characterized in that: Cover plates B (18) and cover plates C (19) are respectively provided on both sides of the pedal assembly (25); the pedal (251) passes through the cover plates B (18) and the cover plates C (19) and extends out; a spline (23) is provided at the bottom of the pedal assembly (25).

4. The engineering machinery steering machine according to claim 1, characterized in that: The rocker switch comprises a frame A (4), a frame B (5), a switch A (6), a switch B (7), a switch C (8) and a switch D (9), wherein the frame A (4) and the frame B (5) are connected, and the switch A (6), the switch B (7), the switch C (8) and the switch D (9) pass through the frame B (5) and the frame A (4) in sequence and are connected.

5. The engineering machinery steering machine according to claim 1, characterized in that: The housing A (13) is provided with a groove A (131) and a mounting groove A (132), wherein the groove A (131) is provided on both sides of the housing A (13), and the mounting groove A (132) is provided on the upper front side of the housing A (13), and the housing A (13) is connected to the rocker switch through the mounting groove A (132).

6. The engineering machinery steering machine according to claim 1, characterized in that: The housing B (16) is provided with a groove B (161) and a screw hole A (162), wherein the groove B (161) is provided on both sides of the housing B (16), and the housing B (16) is connected and fastened with the corresponding screw hole of the housing A (13) after the screw assembly A (15) and the screw assembly B (22) pass through the screw hole A (162), and a sealing member (21) is provided at the screw assembly A (15) and the screw assembly B (22).

7. The engineering machinery steering machine according to claim 1, characterized in that: The cover plate A (1) is provided with an icon cover plate A (2), an icon cover plate B (3) and a mounting groove B (101). The cover plate A (1) is connected and fastened to the housing A (13) and the housing B (16) by screws A (14).

8. The engineering machinery steering machine according to claim 1, characterized in that: A handle (201) is provided on the steering wheel (20), and the handle (201) is rotatably connected to the steering wheel (20).

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