Pedal type steering column structure and engineering machinery

Abstract

The utility model discloses a pedal type steering column structure and engineering machinery, comprising: a lower tubular column assembly comprising a lower tubular column, the bottom of the lower tubular column being installed on a bottom plate of a cockpit, the side wall of the lower tubular column being provided with a plurality of fixed supports and fixed plates; the upper tubular column assembly comprises an upper tubular column, the lower end of the upper tubular column is rotationally installed at the top of the lower tubular column through a fixing support, and the upper end of the upper tubular column is connected with a steering wheel; the pedal mechanism is rotationally mounted on one side of the upper tubular column through a fixed support; the damping spring assembly comprises a damping spring, the upper end of the damping spring is connected with the upper tubular column and can drive the upper tubular column to rotate, the lower end of the damping spring is installed on the side wall of the lower tubular column, the damping spring is connected with a steel wire rope, and the other end of the steel wire rope bypasses a fixing plate on the lower tubular column and is connected with the pedal mechanism. According to the pedal type steering column structure, the body is prevented from inclining forwards in the adjusting process, and a driver can rapidly adjust the pedal type steering column structure to an ideal position through combination of hands and feet.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of foot pedal type steering column structure and engineering machinery, belong to engineering machinery technical field. BACKGROUND

[0002] The existing loader steering column angle adjusting mechanism mainly relies on threaded locking type fastening handle to realize positioning, and the axial pre-tightening force generated by rotating handle is needed to maintain the rigidity of steering column, and its stability is directly limited by the strength of support material and welding process precision. Due to the long-term high-vibration and strong-impact working condition of the loader, the fatigue failure of the threaded pair locking mechanism is easily caused, which leads to the displacement or abnormal noise of the steering column, and further affects the driving experience. Although the improved design introduces the foot pedal type adjustment mode, the overall dumping structure layout seriously compresses the effective space of the driver's legs, which limits the driver's posture during getting on and off the vehicle and requires frequent repositioning and adjustment, seriously restricting the human-machine interaction efficiency, and cannot meet the human engineering requirements in the high-load and high-frequency operation scene of modern engineering machinery. SUMMARY

[0003] In view of the problems existing in the prior art, the utility model provides a kind of foot pedal type steering column structure and engineering machinery, improve the fatigue failure of threaded pair locking mechanism caused by the existing high-vibration and strong-impact working condition, and further abnormal condition of producing jitter, and solve the problems such as limited posture during getting on and off the vehicle and frequent repositioning and adjustment.

[0004] In order to achieve the above purpose, the utility model adopts a kind of foot pedal type steering column structure, comprising:

[0005] The lower pipe column assembly includes a lower pipe column, the bottom of the lower pipe column is installed on the cabin floor, and a plurality of fixed supports and fixed plates are installed on the side wall of the lower pipe column;

[0006] The upper pipe column assembly includes an upper pipe column, the lower end of the upper pipe column is rotatably installed on the top of the lower pipe column through the fixed support, and the upper end of the upper pipe column is connected with the steering wheel;

[0007] The foot pedal mechanism is rotatably installed on one side of the upper pipe column through the fixed support;

[0008] The damping spring assembly includes a damping spring, the upper end of the damping spring is connected with the upper pipe column and can drive the upper pipe column to rotate, the lower end of the damping spring is installed on the side wall of the lower pipe column, the damping spring is connected with a steel wire rope, and the other end of the steel wire rope is connected with the foot pedal mechanism by passing through the fixed plate on the lower pipe column;

[0009] Pedaling the foot pedal mechanism drives the steel wire rope to move down, the steel wire rope pulls the pull rod on the damping spring by passing through the fixed plate on the lower pipe column, which makes the piston rod of the damping spring elongate, drives the upper pipe column to rotate around its connection with the lower pipe column, and adjusts the angle of the steering wheel.

[0010] In some embodiments, the lower column assembly further comprises a lower column bottom plate installed at the bottom of the lower column, front reinforcing ribs, rear reinforcing ribs and side reinforcing ribs are installed between the lower column and the lower column bottom plate, and wire harness fixing holes are arranged on the side reinforcing ribs.

[0011] In some embodiments, the top of the lower column is provided with an upper column fixing support, and the bottom of the upper column is provided with a connecting seat, which is rotatably connected to the upper column fixing support through bolts and nuts.

[0012] In some embodiments, the upper column fixing support and the connecting seat are both in U shape, a mounting screw is installed on one side wall of the upper column fixing support, and a limiting groove is arranged on the connecting seat to cooperate with the mounting screw.

[0013] In some embodiments, one side of the connecting seat is fixedly provided with a mounting side plate, two ear plates are arranged on the mounting side plate, two spring fixing supports are symmetrically arranged on the middle part of the side wall of the lower column, and the upper end of the damping spring and the lower end of the damping spring are connected to the ear plates of the mounting side plate and the spring fixing supports through bolts and nuts.

[0014] In some embodiments, the foot pedal mechanism is installed on the lower column through a foot pedal fixing support, the foot pedal fixing support comprises two L-shaped fixing support plates, two fixing shaft holes are symmetrically arranged on the two fixing support plates, the foot pedal mechanism is rotatably connected to the fixing support plates through bolts, and nuts are installed at the ends of the bolts.

[0015] In some embodiments, the foot pedal mechanism comprises a horizontal shaft, a connecting plate and a foot pedal, one end of the connecting plate is provided with the horizontal shaft, the other end of the connecting plate is provided with the foot pedal, a spiral spring is sleeved on the horizontal shaft, the horizontal shaft is connected to the foot pedal fixing support through bolts, one end of the horizontal shaft is provided with a limiting seat, a limiting bolt is installed on the limiting seat, a fixing frame is installed on the connecting plate, and a fixing groove for connecting a steel wire rope is arranged on the fixing frame.

[0016] In some embodiments, one of the L-shaped fixing support plates is provided with a foot pedal spiral spring limiting groove for cooperating with the spiral spring, and the other L-shaped fixing support plate is provided with a limiting bolt limiting groove for cooperating with the limiting bolt.

[0017] In some embodiments, upper and lower fixing plates for guiding the steel wire rope are installed on the side wall of the lower column, and arc-shaped groove holes are arranged on the upper and lower fixing plates.

[0018] The second aspect of the utility model further provides an engineering machinery, including cockpit bottom plate and steering wheel, cockpit bottom plate and steering wheel between being installed with the foot pedal type steering column structure.

[0019] The foot-pedal type steering column structure of the utility model, compared with the traditional rotating handle locking mode, avoids body leaning forward in the adjusting process, and the combination of hands and feet enables the driver to quickly adjust to the ideal position; the foot-pedal type steering column structure is applicable to complex working condition scenes such as engineering machinery, and provides a new optimization path for the cockpit man-machine interaction system. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0021] Figure 1 It is an assembly structure schematic view of the utility model;

[0022] Figure 2 It is a structure schematic view of the steering column of the utility model;

[0023] Figure 3 It is a structure schematic view of the lower pipe column assembly of the utility model;

[0024] Figure 4 It is a structure schematic view of the upper pipe column assembly of the utility model;

[0025] Figure 5 It is a structure schematic view of the foot-pedal mechanism of the utility model;

[0026] Figure 6 It is a structure schematic view of the damping spring assembly of the utility model;

[0027] Figure 7 It is an enlarged structure schematic view of the steel wire rope and the damping spring assembly of the utility model;

[0028] Figure 8 It is an enlarged structure schematic view of the upper pipe column fixing support and the connecting seat of the utility model;

[0029] In the figure: 1, the cockpit floor; 2, the steering column, 210, the lower column assembly, 2101, the upper column fixed support, 2102, the spring fixed support, 2103, the foot pedal fixed support, 2104, the upper fixed plate, 2105, the lower fixed plate, 2106, the front reinforcing rib, 2107, the rear reinforcing rib, 2108, the side reinforcing rib, 2109, the screw fixed hole, 2110, the wire harness fixed hole, 2111, the fixed shaft hole, 2112, the limit bolt limiting groove, 2113, the foot pedal coil spring limiting groove; 220, the upper column assembly, 2201, the mounting bolt, 2202, the adjusting washer, 2203, the mounting nut, 2204, the limiting groove, 2205, the mounting screw, 2206, the mounting side plate, 2207, the connecting seat; 230, the foot pedal mechanism, 2301, the fastening bolt, 2302, the fastening nut, 2303, the coil spring, 2304, the fixed frame, 2305, the limiting seat, 2306, the limiting bolt; 240, the damping spring assembly, 2401, the damping spring, 2402, the fixed bolt, 2403, the fixed nut, 2404, the pull rod; 250, the steel wire rope; 3, the steering wheel. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the following through specific embodiment to the application technical scheme detailed description, should understand the application embodiment and the specific characteristics in the embodiment of the application are the detailed description of the technical scheme of the application, and not the limitation of the technical scheme of the application, in the case of no conflict, the technical features in the application embodiment and the embodiment can be combined.

[0031] In the description of the utility model, it needs to be explained that unless there is explicit provision and limitation, the terms "installation", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. In the description of the utility model, it needs to be understood that the terms "upper", "lower", "front", "rear" and the like indicate the orientation or positional relationship shown in the drawing, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, a particular orientation and operation, so it cannot be understood as a limitation on the protection content of the utility model.

[0032] Example 1

[0033] As Figures 1-8As shown, a foot-operated steering column structure includes a steering column 2, which specifically includes a lower column assembly 210, an upper column assembly 220, a foot pedal mechanism 230, a damping spring assembly 240, and a steel wire rope 250.

[0034] The lower tube column assembly 210 includes a lower tube column, the bottom of which is mounted on the cockpit floor 1, and multiple fixed supports and fixed plates are mounted on the side wall of the lower tube column.

[0035] The upper column assembly 220 includes an upper column, the lower end of which is rotatably mounted on the top of the lower column via a fixed support, and the upper end of the upper column is connected to the steering wheel 3.

[0036] The foot pedal mechanism 230 is rotatably mounted on one side of the upper column via a fixed support;

[0037] The damping spring assembly 240 includes a damping spring 2401. The upper end of the damping spring 2401 is connected to the upper tube column and can drive the upper tube column to rotate. The lower end of the damping spring 2401 is installed on the side wall of the lower tube column. The damping spring 2401 is connected to the wire rope 250. The other end of the wire rope 250 passes around the fixing plate on the lower tube column and is connected to the foot pedal mechanism 230.

[0038] In use, stepping on the foot pedal mechanism 230 moves the steel wire rope 250 downwards. The other end of the steel wire rope 250 passes around the fixed plate on the lower column, then pulls the pull rod 2404 on the damping spring 2401, causing the piston rod of the damping spring 2401 to extend. The upper end of the piston rod drives the upper column to rotate in the opposite direction at a uniform speed around the connection between the upper and lower columns, thereby adjusting the angle of the steering wheel 3. This invention, through the cooperation of the damping spring assembly 240 and the foot pedal mechanism 230, avoids the body leaning forward during adjustment, and the combination of hands and feet allows the driver to quickly adjust to the ideal position.

[0039] In some embodiments, such as Figure 3 As shown, the lower column assembly 210 also includes a lower column base plate installed at the bottom of the lower column. A front reinforcing rib 2106, a rear reinforcing rib 2107, and two side reinforcing ribs 2108 are installed between the lower column and the lower column base plate. The various reinforcing ribs greatly reduce the vibration transmitted by the vehicle body and solve the problem of driving fatigue caused by steering wheel 3 vibration. The side reinforcing ribs 2108 are provided with wire harness fixing holes 2110 for easy wire harness bundling.

[0040] In some embodiments, such as Figure 3 , Figure 4As shown, the top of the lower column is provided with an upper column fixing support 2101, and the bottom of the upper column is provided with a connecting seat 2207, which is rotatably connected with the upper column fixing support 2101 by taking the mounting bolt 2201 as the shaft, and the end of the mounting bolt 2201 is provided with a mounting nut 2203. In addition, the adjusting washer 2202 is arranged between the mounting bolt 2201 and the side wall of the connecting seat 2207, so as to facilitate the adjustment of the connection stability.

[0041] In some embodiments, as shown in Figure 3 , Figure 4 and Figure 7 , the upper column fixing support 2101 and the connecting seat 2207 are both in U shape, which facilitates the connection. A screw fixing hole 2109 is formed in one side wall of the upper column fixing support 2101, and a mounting screw 2205 is arranged in the screw fixing hole 2109. The bottom of the connecting seat 2207 is provided with a limiting groove 2204 which cooperates with the mounting screw 2205 to limit the position. As shown in Figure 8 , under the action of the damping spring 2401, the connecting seat 2207 is stably rotated towards both sides, which improves the stability of the steering wheel 3 angle adjustment.

[0042] In some embodiments, as shown in Figure 6 , Figure 7 , the connecting seat 2207 is fixed with a mounting side plate 2206 on one side, and the mounting side plate 2206 is provided with two ear plates. The middle part of the side wall of the lower column is provided with two spring fixing supports 2102 which are symmetrically arranged. The upper end of the damping spring 2401 and the ear plate of the mounting side plate 2206, and the lower end of the damping spring 2401 and the spring fixing support 2102 are all connected by the fixing bolt 2402 and the fixing nut 2403. The fixing bolt 2402 and the fixing holes in the ear plate and the spring fixing support 2102 are in clearance fit, so that the two ends of the damping spring 2401 can be partially rotated. By arranging the mounting position of the damping spring 2401 at the middle position of the lower column, the effective space of the legs of the driver's cabin is fully utilized, and the shortcomings such as limited posture and frequent repositioning during getting on and off the vehicle are avoided.

[0043] In some embodiments, as shown in Figure 3 , Figure 5 , the foot pedal mechanism 230 is arranged on the lower column by a foot pedal fixing support 2103. The foot pedal fixing support 2103 includes two L-shaped fixing plates, and two fixing shaft holes 2111 are symmetrically formed in the two fixing plates. The foot pedal mechanism 230 is rotatably connected with the two fixing plates by taking the fastening bolt 2301 as the shaft, and the end of the bolt is provided with a fastening nut 2302. Further, as shown in Figure 5 , Figure 7As shown, the foot pedal mechanism 230 includes a cross shaft, a connecting plate and a foot pedal, one end of the connecting plate is provided with the cross shaft, the other end is provided with the foot pedal, the cross shaft is fixedly sleeved with a spiral spring 2303, the inside of the cross shaft is hollow for mounting a fixing bolt 2402, one end of the cross shaft is fixedly connected with a limiting seat 2305, the limiting seat 2305 is provided with a limiting bolt 2306, in addition, the connecting plate is provided with a fixing frame 2304, the top of the fixing frame 2304 is hook-shaped, and the top of the fixing frame 2304 is provided with a fixing groove for connecting the steel wire rope 250.

[0044] Wherein, the front side of one L-shaped fixed support plate is provided with a foot pedal spiral spring limiting groove 2113 matched with the spiral spring 2303 for limiting, and the rear side of the other L-shaped fixed support plate is provided with a limiting bolt limiting groove 2112 matched with the limiting bolt 2306 for limiting, when the foot pedal is stepped on, the cross shaft, the connecting plate and the spiral spring 2303 rotate synchronously, at this time, one end of the spiral spring 2303 rotates to contact the foot pedal spiral spring limiting groove 2113 to play a limiting role, and at the same time, the limiting bolt 2306 contacts the limiting bolt limiting groove 2112 to play a limiting role. When the foot pedal is stopped, under the resetting action of the spiral spring 2303, the foot pedal mechanism 230 returns to the original position.

[0045] In some embodiments, as shown in the drawings, Figure 7 As shown, the side wall of the lower pipe column is provided with an upper fixed plate 2104 and a lower fixed plate 2105 for guiding the steel wire rope 250, and the upper fixed plate 2104 and the lower fixed plate 2105 are both provided with arc-shaped slot holes. Under the guiding action of the upper fixed plate 2104 and the lower fixed plate 2105, the steel wire rope 250 can be smoothly connected with the pull rod 2404 on the damping spring 2401, and the action of stepping on the foot pedal mechanism 230 can be converted into the action of controlling the piston rod of the damping spring 2401 to elongate.

[0046] In use, the steel wire rope 250 is driven by the foot pedal mechanism 230 to unlock the damping spring 2401 through the upper fixed plate 2104 and the lower fixed plate 2105 on the lower pipe column assembly 210, the piston rod of the damping spring 2401 is elongated to drive the upper pipe column 220 to rotate in the reverse direction at a uniform speed around the axis of the two groups of mounting bolts 2201 and the mounting nuts 2203 for angle adjustment, and the position of the steering wheel 3 can be adjusted according to the needs of the driver.

[0047] Embodiment 2

[0048] The utility model further provides an engineering machinery, including the cabin bottom plate 1 and the steering wheel 3, be installed between the cabin bottom plate 1 and the steering wheel 3 the foot pedal type steering column structure.

[0049] The above only is the embodiment of the present application, and the well-known specific technical solutions and / or common knowledge in the scheme are not described in detail. It should be pointed out that, for those skilled in the art, without departing from the technical solutions of the present application, a number of deformations, improvements or equivalent replacements can be made, which should be covered in the scope of the claims of the present application. The protection scope of the present application should be subject to the content of the claims, and the specific embodiments can be used to explain the content of the claims.

Claims

1. A foot-operated steering column arrangement, characterised in that, The application relates to a foot-operated steering column structure. The lower column assembly comprises a lower column, the bottom of the lower column is mounted on a cockpit bottom plate, and a plurality of fixing supports and fixing plates are mounted on the sidewall of the lower column; The upper column assembly comprises an upper column, the lower end of the upper column is rotatably mounted on the top of the lower column through the fixing supports, and the upper end of the upper column is connected with a steering wheel; The foot pedal mechanism is rotatably mounted on one side of the upper column through fixing supports; The damping spring assembly comprises a damping spring, the upper end of the damping spring is connected with the upper column and can drive the upper column to rotate, the lower end of the damping spring is mounted on the sidewall of the lower column, the damping spring is connected with a steel wire rope, and the other end of the steel wire rope is connected with the foot pedal mechanism through the fixing plate on the lower column; Pedaling the foot pedal mechanism drives the steel wire rope to move downward, the steel wire rope pulls the pull rod on the damping spring through the fixing plate on the lower column, the piston rod of the damping spring is elongated, the upper column is rotated around the connection between the upper column and the lower column, and the angle of the steering wheel is adjusted.

2. A floor-mounted steering column assembly according to claim 1, wherein The lower column assembly further comprises a lower column bottom plate mounted on the bottom of the lower column, front reinforcing ribs, rear reinforcing ribs and side reinforcing ribs are mounted between the lower column and the lower column bottom plate, and wire harness fixing holes are arranged on the side reinforcing ribs.

3. A floor-mounted steering column assembly according to claim 1, wherein The top of the lower column is provided with an upper column fixing support, the bottom of the upper column is provided with a connecting seat, and the connecting seat is rotatably connected with the upper column fixing support through bolts and nuts.

4. A floor-mounted steering column assembly according to claim 3, wherein The upper column fixing support and the connecting seat are both in U-shaped, one sidewall of the upper column fixing support is provided with a mounting screw, and the connecting seat is provided with a limiting groove matched with the mounting screw.

5. A floor-mounted steering column assembly according to claim 4, wherein One side of the connecting seat is fixedly provided with a mounting side plate, the mounting side plate is provided with two ear plates, the middle part of the sidewall of the lower column is provided with two symmetrically arranged spring fixing supports, the upper end of the damping spring is connected with the ear plate of the mounting side plate through bolts and nuts, and the lower end of the damping spring is connected with the spring fixing support through bolts and nuts.

6. A floor-mounted steering column assembly according to claim 1 wherein: The foot pedal mechanism is mounted on the lower column through a foot pedal fixing support, the foot pedal fixing support comprises two L-shaped fixing plates, the two fixing plates are symmetrically provided with fixing shaft holes, the foot pedal mechanism is rotatably connected with the fixing plates through bolts, and the end of the bolt is provided with a nut.

7. A floor-mounted steering column assembly according to claim 6, wherein The foot pedal mechanism comprises a horizontal shaft, a connecting plate and a foot pedal, one end of the connecting plate is provided with the horizontal shaft, the other end of the connecting plate is provided with the foot pedal, a spiral spring is sleeved on the horizontal shaft, the horizontal shaft is connected with the foot pedal fixing support through bolts, one end of the horizontal shaft is provided with a limiting seat, the limiting seat is provided with a limiting bolt, the connecting plate is provided with a fixing frame, and the fixing frame is provided with a fixing groove for connecting the steel wire rope.

8. A floor-mounted steering column assembly according to claim 7, wherein One of the two L-shaped fixing plates is provided with a foot pedal spiral spring limiting groove matched with the spiral spring, and the other L-shaped fixing plate is provided with a limiting bolt limiting groove matched with the limiting bolt.

9. A floor-mounted steering column assembly according to claim 1 wherein: The sidewall of the lower column is provided with an upper fixing plate and a lower fixing plate for guiding the steel wire rope, and the upper fixing plate and the lower fixing plate are both provided with arc-shaped groove holes.

10. A construction machine comprising a cab floor and a steering wheel, characterized in that The cockpit bottom plate and the steering wheel are provided with the foot-operated steering column structure according to any one of claims 1-9.

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