Walking steering mechanism for hydraulic back-tipping car unloader

Abstract

The utility model relates to a walking steering mechanism for a hydraulic back-tipping car unloader. A walking wheel shaft penetrates through a connecting plate and is welded to the connecting plate, the upper end of the connecting plate is connected with a walking wheel shaft support, the walking wheel shaft support is in bolted connection with a stepped shaft support, the stepped shaft support is in welded connection with a stepped shaft, and the stepped shaft is connected with a rotating body through a bearing. The upper part of the stepped shaft is connected with a limiting sleeve through a key and is locked by a nut; a gland is arranged on the outer side of the limiting sleeve at the upper end of the rotating body and connected with the rotating body through a bolt, a rotating supporting arm support is fixed to the outer side of the rotating body, a rotating supporting arm is fixed to the outer side of the limiting sleeve, and the two ends of a rotating oil cylinder are connected with the rotating supporting arm and the rotating supporting arm support respectively. The other side of the lifting supporting arm is hinged to one side of the base, the two ends of the lifting oil cylinder are connected with the base and the lifting supporting arm respectively, and the base is connected with a bottom frame of the hydraulic back-tipping car unloader. The walking wheels are synchronous in steering and small in turning radius.

Description

Technical Field

[0001] The utility model relates to the field of rear dump trucks, in particular to a travel steering mechanism for hydraulic rear dump trucks. Background Art

[0002] The hydraulic rear dumper is a device for automatically unloading vehicles with bulk materials and no self-unloading ability. It is more practical than the side-turning hydraulic flap. The hydraulic rear dumper has a large load-bearing platform and strong lifting capacity, which can meet the unloading needs of all vehicles carrying bulk granular materials. It is widely used for automatic unloading of vehicles with bulk materials such as grain, coal, and ore. It has the characteristics of fast unloading speed, high efficiency, saving labor unloading costs, and environmental protection.

[0003] The hydraulic rear dumper includes a chassis and a flap. The chassis and the flap are hinged at one end. The flap is driven by a hydraulic cylinder to rotate relative to the chassis to unload the vehicle. In actual use, the position of the hydraulic rear dumper needs to be adjusted. A mobile hydraulic rear dumper is invented. Travel wheels are installed at the front and rear ends of the chassis. However, the existing travel wheels are arranged at the front and rear ends, and are arranged on both sides of the chassis. The distance between the two travel wheels is far, slightly larger than the wide plate of the flap, and is about three meters. For example, a hydraulic flap with publication number 115159178BG is provided with a middle wheel and a front wheel under the chassis. Such a setting has the following defects: the travel wheels of the hydraulic rear dumper are not synchronized when turning. Some hydraulic rear dumpers in the prior art achieve travel wheel synchronization when turning by adding a steering tie rod, but the addition of a steering tie rod makes the weight large and the cost high, and the steering angle of the travel wheel is small, and the turning radius is large.

[0004] Therefore, it is necessary to invent a mechanism that can synchronize the turning of the travel wheels of a hydraulic rear dump truck and has a small turning radius. Summary of the invention

[0005] The utility model aims to provide a walking and steering mechanism for a hydraulic rear dump truck, which can make the hydraulic rear dump truck walk and turn better, and two walking wheels are synchronized when turning, and the turning radius is small.

[0006] The technical solution of this utility model:

[0007] A travel steering mechanism for a hydraulic rear dump truck comprises a rotating body, a stepped shaft, a limiting sleeve, a travel wheel, a travel wheel axle, a stepped shaft support, a travel wheel axle support, a connecting plate, a base, a lifting support arm, a lifting oil cylinder, a rotating support arm, a rotating oil cylinder, and a rotating support arm support; the travel wheel is rotatably mounted on the travel wheel axle, the travel wheel axle passes through the connecting plate, the travel wheel axle is welded to the connecting plate, the upper end of the connecting plate is connected to the travel wheel axle support, the travel wheel axle support is bolted to the stepped shaft support, the stepped shaft support is welded to the stepped shaft, and the stepped shaft is connected to the rotating body through a bearing; the upper part of the stepped shaft is connected through a connecting piece A limit sleeve is connected, and the limit sleeve drives the stepped shaft to rotate through the connecting piece. The upper end of the stepped shaft is a screw structure, a flat washer is sleeved on the screw, and a nut locks the screw; a pressure cover is provided on the outer side of the limit sleeve at the upper end of the rotating body, and the pressure cover is connected to the rotating body through bolts, a rotating arm support is fixed to the outer side of the rotating body, and a rotating arm is fixed to the outer side of the limit sleeve, both ends of the rotating cylinder are respectively connected to the rotating arm and the rotating arm support, one side of the lifting arm is fixedly connected to the rotating body, and the other side of the lifting arm is hinged to one side of the base, both ends of the lifting cylinder are respectively connected to the base and the lifting arm, and the base is connected to the chassis of the hydraulic rear dump truck.

[0008] Beneficial effects of the utility model:

[0009] 1. The two traveling wheels of the traveling and steering mechanism of the hydraulic rear dump truck of the present application are free wheels and do not interfere with each other. The traveling wheel axle drives the traveling wheels to rotate simultaneously, and the traveling wheels turn synchronously.

[0010] 2. The travel steering mechanism for the hydraulic rear dump truck of the present application has a compact structure, a small distance between the two travel wheels, a large turning angle and a small turning radius. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0012] Figure 1 This is a schematic diagram of the walking and steering mechanism structure of the hydraulic rear dump truck in this application. (Hydraulic rear dump truck walking state)

[0013] Figure 2 This is a schematic diagram of the walking and steering mechanism structure of the hydraulic rear dump truck for this application. (Hydraulic rear dump truck unloading state)

[0014] Figure 3 This is a schematic diagram of the top view of the travel and steering mechanism for the hydraulic rear dump truck of this application.

[0015] Figure 4 This is a schematic diagram of the travel wheel portion of the travel steering mechanism for the hydraulic rear dump truck in this application.

[0016] Figure 5 The present invention is a schematic structural diagram of a hydraulic rear dump truck equipped with a travel steering mechanism for the hydraulic rear dump truck of the present application.

[0017] Reference numerals:

[0018] Rotating body 1; stepped shaft 2; limiting sleeve 3; walking wheel 4; walking wheel axle 5; stepped shaft support 6; walking wheel axle support 7; connecting plate 8; base 9; lifting arm 10; lifting cylinder 11; rotating arm 12; rotating cylinder 13; rotating arm support 14; key 15; nut 17; pressure cover 18; wheel net 19; wheel hub 20; first side plate 21; first support column 22; second side plate 23; second support column 24; support ring 25; hinge point 26; base frame 100; flap 200; wheel blocking mechanism 300. DETAILED DESCRIPTION

[0019] In order to solve the problems existing in the background technology, the present application specially invented a walking and steering mechanism for a hydraulic rear dump truck, which mainly solves the problem of asynchronous walking and steering of the rear dump truck.

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, the terms "inside", "outside", "front end", "rear end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] The hydraulic rear dumper includes a chassis 100 and a flap 200, wherein one end of the chassis 100 and the flap 200 is hinged (rear end), and a wheel blocking mechanism 300 is installed at one end (rear end) where the chassis and the flap are hinged, and the flap can be flipped up and down at the hinge point. When the hydraulic rear dumper is working, the car that needs to be unloaded reverses onto the flap, and the flap rotates upward with the car, and the wheel blocking mechanism rests on the rear wheels of the car, so that the car can be unloaded normally. When the position of the hydraulic rear dumper needs to be adjusted after unloading, the prior art controls the motor to drive the running wheels to move by a remote controller. Because the two running wheels at the rear end are far apart, and there is no synchronization mechanism such as a tie rod in the middle, the two running wheels are not turned synchronously. There are also tie rod structures installed in the prior art, but the structure is bulky and not compact. The two running wheels are far apart, the turning radius is large, and the controllability and flexibility of the unloading machine are not good.

[0023] The present application discloses a travel steering mechanism for a hydraulic rear dump truck, comprising a rotating body 1, a stepped shaft 2, a limiting sleeve 3, a travel wheel 4, a travel wheel shaft 5, a stepped shaft support 6, a travel wheel shaft support 7, a connecting plate 8, a base 9, a lifting arm 10, a lifting cylinder 11, a rotating arm 12, a rotating cylinder 13, and a rotating arm support 14. The travel wheel 4 is rotatably mounted on the travel wheel shaft 5, the travel wheel shaft 5 passes through the connecting plate 8, the travel wheel shaft 5 is welded to the connecting plate 8, the upper end of the connecting plate 8 is connected to the travel wheel shaft support 7, the travel wheel shaft support 7 is bolted to the stepped shaft support 6, the stepped shaft support 6 is welded to the stepped shaft 2, and the stepped shaft 2 is connected to the rotating body 1 through a bearing. The upper part of the stepped shaft 2 is connected to the limiting sleeve through a connecting piece (key 15 or expansion ring), the upper end of the stepped shaft 2 is a screw structure, a flat washer is sleeved on the screw, and a nut 17 locks the screw. A pressure cap 18 is provided on the outer side of the limit sleeve at the upper end of the rotating body 1, and the pressure cap 18 is connected to the rotating body 1 by bolts. A rotating arm support 14 is fixed to the outer side of the rotating body 1, and a rotating arm 12 is fixed to the outer side of the limit sleeve 3. The two ends of the rotating oil cylinder 13 are respectively connected to the rotating arm 12 and the rotating arm support 14. One side of the lifting arm 10 is fixedly connected to the rotating body, and the other side of the lifting arm 10 is hinged to one side of the base 9. The two ends of the lifting oil cylinder 11 are respectively connected to the base 9 and the lifting arm 10, and the base 9 is connected to the chassis of the hydraulic rear dump truck.

[0024] When in use, the lifting cylinder drives the lifting arm to rotate upward around the hinge point 26 of the hinge with the base, and drives the travel wheel shaft and the travel wheel to rotate upward through the rotating body, and the travel wheel leaves the ground, and the chassis moves downward for unloading. After unloading, the lifting cylinder moves in the opposite direction, driving the travel wheel shaft and the travel wheel to rotate downward, and the travel wheel falls to the ground, and the chassis moves upward and rises. When turning is required, the rotating cylinder drives the rotating arm to rotate, and then drives the step shaft to rotate through the limit sleeve, and the step shaft belt drives the travel wheel shaft and the travel wheel to rotate through the step shaft support and the travel wheel shaft support to achieve turning.

[0025] The center of the walking wheel 4 is provided with a through hole, in which a wheel net 19 is fixedly installed, and both ends of the walking wheel axle are connected to the wheel hub 20 through bearings, and the wheel hub 20 is connected to the wheel net 19 through bolts, and both ends of the walking wheel axle 5 are screw structures, flat washers are sleeved on the screws, and nuts 17 lock the screws. The two walking wheels are connected by the walking wheel axle to achieve synchronous steering.

[0026] The distance between the two ends of the walking wheel axle is 1 / 4-1 / 2 of the width of the flap of the hydraulic rear dumper. The present application adopts two steering wheels, which is stable and has a small turning diameter.

[0027] The lifting arm 10 is composed of two first side panels 21 and a first supporting column 22 in the middle, and the two ends of the first supporting column are fixedly connected to the first side panels; the base 9 is composed of two second side panels 23 and a second supporting column 24 in the middle, and the two ends of the second supporting column are fixedly connected to the second side panels.

[0028] A support ring 25 is fixed on the outer side of the rotating body 1, and the welding part between the lifting arm and the rotating body is placed between the support ring and the rotating arm support.

[0029] The two running wheels described in the present application are connected by a running wheel axle, and the running wheel axle drives the two running wheels to rotate through a steering cylinder and a steering arm, thereby solving the problem of asynchronous steering in the background technology. The steering angle is adjustable and can reach 40 degrees, and the turning radius is small. The distance between the two running wheels of the present application is small, equivalent to one running wheel, and the structure is compact and flexible.

[0030] Working process:

[0031] 1. During the unloading process of the hydraulic rear dumper, the flap falls onto the chassis, the lifting cylinder is controlled to shrink, the lifting cylinder pulls the lifting arm, and then pulls the rotating body, the rotating body pulls the travel wheel axle upward through the connecting plate, pulls the two travel wheels upward and leaves the ground, and at the same time the chassis moves downward and contacts the ground. At this time, the pre-unloaded car reverses onto the flap until the rear wheels of the car stop against the wheel blocking mechanism of the flap, and then starts unloading. After unloading, the car drives away from the flap.

[0032] 2. When the position of the hydraulic rear dumper needs to be adjusted, the lifting cylinder is controlled to lower the travel wheel axle and travel wheel to the ground through the lifting arm, and the chassis moves upward and leaves the ground. The motor drives the vehicle to travel. When turning is required, the steering cylinder is controlled to drive the limit sleeve, key and stepped shaft to rotate through the steering arm, and then drive the travel wheel axle and travel wheel to rotate to achieve turning. In this turning method, the two travel wheels are synchronized, the turning angle is large, and the turning radius is small.

[0033] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the above and does not deviate from the technical solution of the present invention, and designs a structure and implementation similar to the technical solution based on the above implementation examples without creativity, they shall all fall within the protection scope of the present invention.

Claims

1. A walking and steering mechanism for a hydraulic rear dump truck, characterized in that: It includes a rotating body, a stepped shaft, a limiting sleeve, a walking wheel, a walking wheel shaft, a stepped shaft support, a walking wheel shaft support, a connecting plate, a base, a lifting arm, a lifting cylinder, a rotating arm, a rotating cylinder, and a rotating arm support. The walking wheel is rotatably installed on the walking wheel shaft, the walking wheel shaft passes through the connecting plate, the walking wheel shaft is welded to the connecting plate, the upper end of the connecting plate is connected to the walking wheel shaft support, the walking wheel shaft support is bolted to the stepped shaft support, the stepped shaft support is welded to the stepped shaft, the stepped shaft is connected to the rotating body through a bearing, the upper part of the stepped shaft is connected to the limiting sleeve through a connecting piece, and the limiting sleeve The stepped shaft is driven to rotate through the connecting piece, and the upper end of the stepped shaft is a screw structure, a flat washer is sleeved on the screw, and the nut locks the screw, a pressure cover is provided on the outer side of the limit sleeve at the upper end of the rotating body, and the pressure cover is connected to the rotating body through bolts, a rotating arm support is fixed to the outer side of the rotating body, and a rotating arm is fixed to the outer side of the limit sleeve, two ends of the rotating cylinder are respectively connected to the rotating arm and the rotating arm support, one side of the lifting arm is fixedly connected to the rotating body, and the other side of the lifting arm is hinged to one side of the base, two ends of the lifting cylinder are respectively connected to the base and the lifting arm, and the base is connected to the chassis of the hydraulic rear dump truck.

2. The walking and steering mechanism for a hydraulic rear dump truck according to claim 1, characterized in that: A through hole is opened in the center of the traveling wheel, a wheel net is fixed in the through hole, two ends of the traveling wheel axle are connected to the wheel hub through bearings, the wheel hub is connected to the wheel net through bolts, two ends of the traveling wheel axle are screw structures, flat washers are sleeved on the screws, and nuts lock the screws.

3. The walking and steering mechanism for a hydraulic rear dump truck according to claim 2 is characterized in that: The distance between the two ends of the traveling wheel axle is 1 / 4 to 1 / 2 of the width of the flap of the hydraulic rear dumper.

4. The walking and steering mechanism for a hydraulic rear dump truck according to claim 1, characterized in that: The lifting arm is composed of two first side plates and a first supporting column in the middle, and both ends of the first supporting column are fixedly connected to the first side plates; the base is composed of two second side plates and a second supporting column in the middle, and both ends of the second supporting column are fixedly connected to the second side plates.

5. The walking and steering mechanism for a hydraulic rear dump truck according to claim 1 is characterized in that: A support ring is fixed outside the rotating body, and the welding part between the lifting arm and the rotating body is arranged between the support ring and the rotating arm support.

6. The walking and steering mechanism for a hydraulic rear dump truck according to claim 1, characterized in that: The connecting piece is a key or an expansion ring.

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