CN216444623U

CN216444623U - Unloading mechanism

Info

Publication number: CN216444623U
Application number: CN202121147803.1U
Authority: CN
Inventors: 金卫平
Original assignee: Huzhou Xinba Intelligent Technology Co ltd
Current assignee: Huzhou Xinba Intelligent Technology Co ltd
Priority date: 2021-05-26
Filing date: 2021-05-26
Publication date: 2022-05-06
Anticipated expiration: 2031-05-26

Abstract

The utility model relates to a car unloading mechanism which comprises a base, a loading assembly, a lifting device and an anti-falling assembly, wherein the loading assembly is arranged on the base; the first end of the load-carrying component is hinged on the base; the lifting device is used for lifting the second end of the load-carrying component; the anti-falling assembly is arranged between the base and the load assembly and used for limiting the falling of the second end of the lifted load assembly. Above-mentioned unloading mechanism, through adding between base and load subassembly and prevent weighing down the subassembly, when unloading mechanism prevents weighing down subassembly and elevating gear and is same part, the problem that anti-falling device easily became invalid, and life is short has been solved. Meanwhile, the problem of difficulty in installation and connection of the anti-falling assembly is solved by adjusting the connection mode of the anti-falling assembly, the base and the load assembly.

Description

Unloading mechanism

Technical Field

The application relates to the technical field of unloading mechanisms, in particular to an unloading mechanism.

Background

When unloading materials conveyed by an automobile, a dumper mechanism is generally used for unloading or manual unloading. The self-unloading mechanism belongs to the device of the vehicle body. The self-dumping mechanism enables the goods in the carriage to be automatically dumped down by inclining the carriage upwards by a certain angle relative to the frame, and then enables the carriage to be descended onto the frame. The body of a dumper-free mechanism is usually unloaded manually, i.e. a person stands on the dumper to throw goods downwards or the person lifts the goods from the dumper to the downside of the dumper. When the manual unloading mode is adopted, the labor intensity of people is high, the labor force is seriously wasted, the efficiency of loading and unloading the truck is greatly reduced, and safety accidents are easy to happen. The unloading speed of the vehicle body with the dumper mechanism is far higher than that of manual unloading, but the price of the vehicle body with the dumper mechanism is higher, and the weight of the vehicle is increased due to the fact that the dumper mechanism is additionally arranged on the vehicle body, so that the vehicle is not beneficial to energy conservation and environmental protection. At present, the unloading mechanism is adopted to unload the vehicle body without the unloading mechanism in the prior art, but the unloading mechanism is generally used frequently, namely, the lifting device in the unloading mechanism is used frequently, and the lifting device and the anti-falling device in the unloading mechanism are generally the same part, for example, the same part is a hydraulic rod. Because the frequency of using anti-falling device is higher, so, anti-falling device's life-span is short, and the easy inefficacy for in the in-process vehicle that unloads falls, and then causes the loss to people's life and property. In addition, because the loading plate and the base need to rotate when in use, the installation space of the unloading assembly is small, and the connection is difficult. Therefore, the performance of the anti-falling component in the unloading mechanism is improved, the difficulty in installation and connection of the anti-falling component is overcome, and the anti-falling effectiveness is ensured.

SUMMERY OF THE UTILITY MODEL

Accordingly, there is a need for a unloading mechanism that is environmentally friendly, safe, and efficient. The unloading mechanism comprises a base, a loading assembly, a lifting device and an anti-falling assembly; the first end of the load-carrying component is hinged on the base; the lifting device is used for lifting the second end of the load-carrying component; the anti-falling assembly is arranged between the base and the load assembly and used for limiting the falling of the second end of the lifted load assembly.

According to the unloading mechanism, the anti-falling assembly is added between the base and the loading assembly, so that the problems that the anti-falling device is easy to lose efficacy and the service life is short when the anti-falling assembly and the lifting device in the unloading mechanism are the same component are solved. Meanwhile, the problem of difficulty in installation and connection of the anti-falling assembly is solved by adjusting the connection mode of the anti-falling assembly, the base and the load assembly. In some embodiments of the present application, the number of fall arrest assemblies is at least two, and at least one fall arrest assembly is disposed on each side of the load carrying assembly.

In some embodiments of the present application, the fall arrest assembly comprises a rack, a web, a ratchet, and a ratchet adjustment structure; one end of the rack is arranged on the base, and the other end of the rack extends towards the lifting direction of the lifting device; the ratchet wheel is arranged on the load-carrying component through the connecting plate, can move along the extending direction of the rack when the load-carrying component rotates relative to the base, and further is matched with the rack to limit the falling of the second end in a lifting state; the ratchet wheel adjusting structure is connected with the ratchet wheel and used for realizing and removing the matching of the ratchet wheel and the rack by adjusting the rotating angle of the ratchet wheel.

In some embodiments of the present application, the ratchet wheel is provided with a flange, and the ratchet wheel adjusting structure adjusts the flange to alternately engage and disengage the rack during the lifting of the load-carrying assembly.

In some embodiments of the present application, the unloading mechanism further includes a connecting assembly, the connecting assembly includes a connecting fixed roller, and the connecting fixed roller is disposed on one side of the connecting plate; the connecting guide rail is arranged on the load-carrying assembly and extends towards the second end along the first end, and the fixed roller is clamped in the connecting guide rail along the axial direction of the fixed roller; when the load assembly rotates relative to the base, the load assembly drives the connecting plate to move through the connecting guide rail and the connecting fixed roller which are clamped with each other.

In some embodiments of the present application, the connecting assembly further includes a movable roller, the movable roller is slidably connected to the connecting plate along an extending direction of the rack, and is axially clamped to the connecting rail along the movable roller; the connecting plate and the connecting guide rail realize double-point connection through the movable roller and the fixed roller.

In some embodiments of the present application, the unloading mechanism further includes a guide assembly disposed between the base and the load-carrying assembly for guiding the connecting plate to move along the extending direction of the rack.

In some embodiments of the present application, the guide assembly includes a guide plate, a first guide wheel and a second guide wheel, the guide plate is disposed on the base and extends along an extending direction of the rack; the first guide wheel is arranged on the connecting plate and is abutted against one side of the guide plate; the second guide wheel is arranged on the connecting plate and is abutted against the opposite side of the guide plate, and the first limiting idler wheel and the second limiting idler wheel are matched with the guide plate to limit the connecting plate to move along the extending direction of the rack.

In some embodiments of the present application, the ratchet adjusting structure includes a driving device, which is disposed on the connecting plate and is used for driving the ratchet to rotate in the forward direction so as to disengage the ratchet from the rack; one end of the torsion spring is fixed on the connecting plate, the other end of the torsion spring is fixed on the ratchet wheel, the torsion spring elastically deforms in the process of forward rotation of the ratchet wheel and drives the ratchet wheel to rotate reversely through elastic recovery so as to realize the matching of the ratchet wheel and the rack; and the anti-falling shaft is fixed on the connecting plate and used for limiting the ratchet wheel to be in a matching state with the rack in the reverse rotation process.

In some embodiments of the application, the ratchet adjusting structure further includes a limiting shaft, the limiting shaft is fixed on the connecting plate, and the limiting shaft is used for limiting the ratchet to be in a disengaged state during the forward rotation of the ratchet.

Drawings

FIG. 1a is a schematic illustration of a natural state of an unloader mechanism according to some embodiments of the present application;

FIG. 1b is a schematic illustration of an unloading configuration of an unloading mechanism according to some embodiments of the present application, showing a vehicle body;

FIG. 1c is a schematic illustration of an unloading state of an unloading mechanism according to some embodiments of the present application, wherein the vehicle body is not shown;

FIG. 2 is a schematic structural view of a fall arrest assembly 4 assembled with a base 1 and a load carrying assembly 2, wherein the fall arrest assembly 4 is outboard of a vehicle dump mechanism, according to some embodiments of the present application;

FIG. 3 is a schematic illustration of a fall arrest rail 41 according to some embodiments of the present application;

FIG. 4a is a schematic view of the fall arrest assembly 4 in a natural state of the unloading mechanism, wherein the fall arrest assembly 4 is inside the unloading mechanism and the first flange 431 of the ratchet 43 catches on the rack 412 of the fall arrest rail 41, according to some embodiments of the present disclosure;

FIG. 4b is a schematic view of the fall arrest assembly 4 in a reset condition of the unloading mechanism according to some embodiments of the present application, wherein the fall arrest assembly 4 is inside the unloading mechanism and the first flange 431 of the ratchet 43 is disengaged from the rack 412 of the fall arrest rail 41;

FIG. 5a is a rear view of the configuration of the fall arrest assembly 4 in area M of FIG. 4 a;

FIG. 5b is a rear view of the configuration of the fall arrest assembly 4 in area N of FIG. 4 b;

FIG. 5c is a front view of the fall arrest assembly 4 of FIG. 4a, with the gear rack 412 on the fall arrest rail 41 not shown;

FIG. 5d is a right side view of the fall arrest assembly 4 of FIG. 4b, with the gear rack 412 on the fall arrest rail 41 not shown.

The reference numbers in the drawings have the meanings given below:

1-a base;

2-load bearing component, 21-lifting support frame, 22-catch wheel device;

3-a lifting device;

4-anti-falling assembly, 41-anti-falling guide rail, 411-first side plate, 412-rack, 413-second side plate, 414-waist plate, S1-first inner side surface, S2-second inner side surface, S3-third outer side surface, 42-connecting plate, 43-ratchet wheel, 431-first flange, 432-second flange, 44-ratchet wheel adjusting structure, 441-torsion spring, 442-driving device, 4421-driver, 4422-connecting shaft and 443-anti-falling shaft; 444-a limiting shaft, 45-a first roller group, 451-a first fixed roller, 452-a second fixed roller, 453-a third fixed roller, 46-a second roller group, 461-a movable roller, 462-a connecting fixed roller, 47-a ratchet wheel mounting shaft, 48-a protective plate, 49-a connecting guide rail and an L-linear seam;

5, climbing a ladder;

6-chain.

Detailed Description

To facilitate an understanding of the present application, the present application will be described more fully below. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

FIG. 1a is a schematic illustration of a unloading mechanism in a natural waiting state according to some embodiments of the present application; FIG. 1b is a schematic illustration of an unloading configuration of an unloading mechanism according to some embodiments of the present application, showing a vehicle body; FIG. 1c is a schematic illustration of an unloading state of an unloading mechanism according to some embodiments of the present application, wherein the vehicle body is not shown; fig. 2 to 4b are partial structural schematic views of the unloading mechanism.

As shown in fig. 1a, 1b and 1c, some embodiments of the present application provide a car unloader mechanism including a base 1, a load carrying assembly 2, a lifting device 3 and a fall arrest assembly 4. Wherein, the first end of load subassembly 2 articulates in base 1, prevents weighing down subassembly 4 and locates between base 1 and load subassembly 2. The load-carrying component 2 is used for carrying a vehicle body to be unloaded, the lifting device 3 is used for lifting the second end of the load-carrying component 2, and the anti-falling component 4 is used for limiting the falling of the second end of the load-carrying component 2 in a lifting state.

For example, in the embodiment shown in fig. 1a and 1b, when the vehicle body is parked on the load carrying assembly 2, the vehicle tail is parked at the first end of the load carrying assembly 21, and the vehicle head is parked at the second end of the load carrying assembly 2.

As shown in fig. 1a, 1b and 1c, in some embodiments of the present application, the lifting device 3 is implemented by a hydraulic rod, and the side of the load-carrying component 2 is provided with a lifting support frame 21 for connecting the lifting device 3. Specifically, the lifting device 3 is implemented by hydraulic rods, as shown in fig. 1c, two hydraulic rods are symmetrically arranged on two sides of the base 1, fixed ends of the hydraulic rods are hinged to the base 1, extension ends of the hydraulic rods are hinged to the lifting support frame 21 on the side edge of the load-carrying component 2, the extension ends of the hydraulic rods extend to lift the second end of the load-carrying component 2, so as to unload objects on the vehicle body. It should be understood that the present application is not limited to the specific number of hydraulic rods and the specific connection manner between the hydraulic rods and the load-carrying assembly 2 and the base 1.

Specifically, the structure of the fall arrest assembly 4 and the manner of connecting the fall arrest assembly 4 to the base 1 and load carrying assembly 2 are illustrated in FIGS. 2 to 5d, and the structural features of the fall arrest assembly 4 are described in detail below with reference to FIGS. 2 to 5 d.

FIG. 2 is a schematic view of one of the fall arrest assemblies 4 in some embodiments of the present application, as shown in FIG. 2. in some embodiments of the present application, the fall arrest assembly 4 includes a rack 412, a web 42, a ratchet 43, and a ratchet adjustment structure 44. One end of the rack 412 is disposed on the base 1, and the other end extends toward the lifting direction of the lifting device 3. The ratchet wheel 43 is disposed on the load-carrying component 2 through the connecting plate 42, and can move along the extending direction of the rack 412 when the load-carrying component 2 rotates relative to the base 1, and further cooperate with the rack 412 to limit the second end falling in the lifting state, wherein the ratchet wheel 43 is fixed on the connecting plate 42 through the ratchet wheel mounting shaft, and the connecting plate 42 is disposed on the load-carrying component 2. The ratchet wheel adjusting structure 44 is connected with the ratchet wheel 43 and is used for adjusting the rotation angle of the ratchet wheel 43 to realize and release the matching of the ratchet wheel 43 and the rack 412. Wherein the ratchet wheel 43 is driven to rotate forwardly to release the engagement of the ratchet wheel 43 and the rack 412 means that the ratchet wheel 43 can move upward or downward relative to the rack 412 in the extending direction of the rack 412.

In some embodiments of the present application, the ratchet wheel 43 is rotatably fixed to one side of the connection plate 42, and the side of the load carrying assembly 2 is connected to the other side of the connection plate 42. The ratchet adjusting structure 44 is fixed on the side of the connecting plate 42 and disposed near the ratchet 43 to facilitate connection with the ratchet 43 and reduce the space occupied by the connecting plate 42.

In some embodiments of the present application, the ratchet wheel 43 is provided with a flange, and the ratchet wheel adjustment structure 44 adjusts the flange to alternately engage and disengage the rack 412 during the process that the ratchet wheel 43 is lifted by the load-carrying assembly 2, i.e. the above-mentioned engagement and disengagement between the ratchet wheel 43 and the rack 412 are achieved. Disengagement of the flange on the ratchet 43 and the rack 412, so that the ratchet 43 can move upward relative to the rack 412; the engagement between the flange of the ratchet wheel 43 and the rack 412 enables the flange of the ratchet wheel 43 connected to the load-carrying member 2 to abut against the teeth of the rack 412 (i.e. the lower surface of the flange of the ratchet wheel 43 abuts against the upper surface of the last engaged tooth of the rack 412) in case the lifting device 3 fails and the load-carrying member 2 falls due to gravity, and the teeth of the rack 412 consume the gravity of the load-carrying member 2, thereby preventing the lifted load-carrying member 2 from falling rapidly.

The structure and fall arrest principle of the gear 412, ratchet 43 and ratchet adjustment structure 44 will now be described in detail with reference to fig. 4a to 5 d.

FIG. 4a is a schematic view of the fall arrest assembly 4 in a natural state of the unloading mechanism according to some embodiments of the present application, wherein the fall arrest assembly 4 is inside the unloading mechanism and the first flange 431 of the ratchet 43 is caught on the rack 412; FIG. 4b is a schematic view of the fall arrest assembly 4 in a reset condition of the unloading mechanism according to some embodiments of the present application, wherein the fall arrest assembly 4 is inside the unloading mechanism and the first flange 431 of the ratchet 43 is disengaged from the rack 412 of the fall arrest rail 41; FIG. 5a is a rear view of the arrangement of the fall arrest assembly 4 in the area M of FIG. 4 a; FIG. 5b is a rear view of the configuration of the fall arrest assembly 4 in area N of FIG. 4 b; FIG. 5c is a front view of the fall arrest assembly 4 of FIG. 4a, with the gear rack 412 on the fall arrest rail 41 not shown.

As shown in fig. 5a, in some embodiments of the present application, the ratchet 43 is provided with a first flange 431 and a second flange 432, wherein the first flange 431 cooperates with the teeth of the rack 412 to transmit the weight of the load-carrying assembly 2; the second flange 432 is used for adjusting the rotation angle of the ratchet 43, and the ratchet adjusting structure 44 limits the rotation angle of the second flange 432 to limit the rotation angle of the first flange 431 on the ratchet 43, so that the first flange 431 can be clamped or disengaged with the rack 412.

In some embodiments of the present application, the ratchet adjustment structure 44 includes a drive device 442, a torsion spring 441, and a fall arrest shaft 443. The driving device 442 is disposed on the connecting plate 42 for driving the ratchet 43 to rotate in the forward direction to release the engagement between the ratchet 43 and the rack 412. As shown in fig. 5a, one end of the torsion spring 441 is fixed to the connecting plate 42, and the other end is fixed to the ratchet wheel 43, and the torsion spring 441 elastically deforms during the forward rotation of the ratchet wheel 43 and drives the ratchet wheel 43 to rotate reversely through elastic recovery, so as to achieve the matching between the ratchet wheel 43 and the rack 412. When the ratchet wheel 43 is lifted under the driving of the load carrying assembly 2, and the ratchet wheel 43 and the rack 412 move relatively, the teeth on the rack 412 drive the first flange 431 on the ratchet wheel 43 to rotate positively, so that the ratchet wheel 43 rotates positively; during the lowering of the ratchet wheel 43, the driving device 442 drives the ratchet wheel 43 to rotate in the forward direction, and the forward rotation of the ratchet wheel 43 releases the engagement between the ratchet wheel 43 and the rack 412, so that the ratchet wheel 43 moves up and down in the extending direction of the rack 412. As shown in FIG. 5a, the fall arrest shaft 443 is fixed to the attachment plate 42 for restraining the ratchet 43 from engaging the rack 412 during reverse rotation of the ratchet 43.

In this embodiment, the engagement between the ratchet wheel 43 and the rack 412 means that the first flange 431 of the ratchet wheel 43 is engaged with the teeth of the rack 412. As shown in fig. 5a, the falling-off preventing shaft 443 is disposed near the second flange 432 on the opposite side of the second flange 432, and when the torsion spring 441 drives the ratchet wheel 43 to rotate reversely through elastic restoring, the falling-off preventing shaft 443 limits the maximum reverse rotation angle of the second flange 432, so as to achieve the engagement of the first flange 431 with the rack 412, i.e., the first flange 431 is caught between two teeth on the rack 412. In case the lifting device 3 fails and the load-carrying member 2 falls by gravity, the upper surface of the teeth of the rack 412 supports the lower surface of the first flange 431 of the ratchet 43, and the gravity of the load-carrying member 2 is transmitted to the rack 412 (i.e. the base 1) through the first flange 431, so as to prevent the lifted load-carrying member 2 from falling rapidly.

In some embodiments of the present application, the drive device 442 controls the degree of forward rotation of the first flange 431 on the ratchet 43 to disengage the ratchet 43 from the rack 412 during lifting of the load carrying assembly 2.

In some embodiments of the present application, the ratchet adjustment structure 44 further includes a limiting shaft 444, the limiting shaft 444 is fixed on the connecting plate 42, and the limiting shaft 443 is used for limiting the ratchet 43 to be in the disengaged state with the rack 412 during the forward rotation of the ratchet 43. The limiting shaft 443 limits the forward rotation angle of the ratchet wheel 43, so that the first flange 431 on the ratchet wheel 43 keeps a gap with the rack 412, and the first flange 431 is prevented from contacting the rack 412 due to the fact that the forward rotation angle of the ratchet wheel 43 is too small; and the second flange 432 on the ratchet wheel 43 keeps a gap with the rack 412, so that the second flange 432 is prevented from contacting the rack 412 due to an overlarge forward rotation angle of the ratchet wheel 43, and the descending of the ratchet wheel 43 is prevented from being hindered by the rack 412. For example, as shown in fig. 5a, the limiting shaft 444 is disposed on the forward side of the second flange 432 to limit the forward rotation angle of the ratchet 43, so that the ratchet 43 always keeps a gap from the tooth tip of the rack 412, and thus the ratchet 43 moves downward along the direction in which the rack 412 extends.

FIG. 5d is a right side view of the fall arrest assembly 4 of FIG. 4b, with the gear rack 412 on the fall arrest rail 41 not shown. As shown in fig. 5d, in some embodiments of the present application, the driving device 442 comprises a driver 4421 and a connecting shaft 4422.

To facilitate the installation and use of the fall arrest assembly 4, as shown in FIG. 5d, ratchet wheels 43 and drive devices 442 are mounted on opposite sides of the connecting plate 42, wherein the ratchet wheels 43 are mounted on the connecting plate 42 adjacent the side of the rack 412 and the drive devices 442 are mounted on the connecting plate 42 adjacent the side of the load carrying assembly 2. Wherein the connecting shaft 4422 passes through the connecting plate 42, one end of the connecting shaft 4422 is fixed on the ratchet wheel 43, and the other end is rotatably connected with the connecting rod on the driver 4421; while a gap (not shown) required for the rotational movement of the link shaft 4422 is provided on the link plate 42, the driver 4421 drives the link shaft 4422 to rotate about the ratchet mounting shaft 47 shown in fig. 5 a.

In some embodiments of the present application, the driver 4421 is used to control the ratchet 43 to rotate in both the reverse and forward directions. For example, a system for controlling the rotation angle is added to the driver 4421 so that the driver 4421 drives the ratchet 43 to rotate within a certain angle range.

In order to protect the ratchet wheel 43 from other environments during rotation, in some embodiments of the present application, as shown in fig. 5d, a protection plate 48 is disposed on the outer side of the ratchet wheel 43 (the other side connected to the connection plate 42), and the protection plate 48 is fixed on the connection plate 42 for protecting the ratchet wheel 43 from the environments and preventing the robot from being injured.

To make the fall arrest assembly 4 more structurally compact and stable in connection, in some embodiments of the present application, a protection plate 48, as shown in FIG. 5d, is connected to the ratchet mounting shaft 47, the fall arrest shaft 443 and the limit shaft 444 described above.

As shown in fig. 2, in some embodiments of the present application, the rack 412 is linear. A guide assembly is provided in the fall arrest assembly 4 which guides the movement of the connection plate 42 along the direction of extension of the rack 412. The connecting assembly is arranged between the connecting plate 42 and the load-carrying component 2, so that in the process that the load-carrying component 2 drives the connecting plate 42 to move up and down, the driving force of the connecting plate 42 in the axial direction is consumed, and the connecting plate 42 can move along a straight line. The guide assembly is described in detail below with reference to fig. 2-4 b, and fig. 5 a.

As shown in FIG. 2, in some embodiments of the present application, the rack 412 is secured to the fall arrest rail 41.

FIG. 3 is a schematic illustration of a fall arrest rail 41 according to some embodiments of the present application, as shown in FIG. 3, in some embodiments of the present application, the fall arrest rail 41 is made of H-section steel; the anti-falling guide rail 41 comprises a first side plate 411, a second side plate 413 and a waist plate 414, wherein the first side plate 411 and the second side plate 413 are parallel, and the waist plate 414 is arranged between the first side plate 411 and the second side plate 413 and is vertically connected to the first side plate 411 and the second side plate 413. The first side panel 411 includes a first inner side surface S1 perpendicular to the waist panel 414; the second side panel 413 includes two sides perpendicular to the waist panel 414, namely a second interior side S2 and a third exterior side S3. Wherein the first medial side S1 and the second medial side S2 are parallel and opposite.

As shown in FIG. 2, in some embodiments of the present application, the rack 412 is secured to the first side plate 411 of the fall arrest rail 41. The anti-falling guide rail 41 is arranged on one side close to the first end and extends obliquely upwards, the rack 412 is fixed on the first inner side surface S1 of the first side plate 411, and the extending direction of the teeth on the rack 412 is perpendicular to the first inner side surface S1. The extending direction of the rack 412 is the same as that of the anti-falling guide rail 41, so that the size of the anti-falling assembly 4 is reduced, the material is saved, the anti-falling assembly 4 is prevented from occupying the parking space of the vehicle body on the load assembly 2, and meanwhile, under the condition that the load assembly 2 is lifted to the same angle, the shorter anti-falling guide rail 41 is matched with the ratchet wheel 43, so that the anti-falling effect can be realized.

In some embodiments of the present application, the guide assembly includes a guide plate, a first guide wheel, and a second guide wheel. The guide plate is arranged on the base 1 and extends along the extending direction of the rack 412; the first guide wheel is arranged on the connecting plate 42 and is abutted against one side of the guide plate; the second guide wheel is disposed on the connecting plate 42 and abuts against an opposite side of the guide plate, and the first guide wheel and the second guide wheel are engaged with the guide plate 413 to guide the connecting plate 42 to move along the extending direction of the rack 412.

In some embodiments of the present application, the second side plate 413 is provided as a guide plate, and the first guide wheel and the second guide wheel respectively abut against the second inner side surface S2 and the third outer side surface S3 on the second side plate 413, so as to guide the moving direction of the ratchet wheel 43 and the extending direction of the rack 41241 to be parallel. So that the distance from the ratchet wheel 43 to the rack 412 is unchanged, in the moving process of the ratchet wheel 43, the first flange 431 on the ratchet wheel 43 rotates in the positive direction under the action of the teeth on the rack 412, and after the first flange 431 is separated from the current teeth, the matching between the ratchet wheel 43 and the current teeth on the rack 412 is released; under the restoring force of the torsion spring, the first flange 431 reversely rotates to the angle of matching with the next tooth, so that the ratchet 43 is matched with the next tooth of the rack 412. This alternately enables and disables engagement of the ratchet wheel 43 with the teeth on the rack 412 to prevent the lifted load carrying assembly 2 from falling rapidly.

In order to reduce the space occupied by the first guide wheel and the second guide wheel, in some embodiments of the present application, the first guide wheel and the second guide wheel are disposed at an upper portion of the above-described connection plate 42, and a direction of extension from the first guide wheel to the second guide wheel is perpendicular to the guide plate to clamp the guide plate such that the guide plate guides the first guide wheel and the second guide wheel to move along the direction of extension of the guide plate.

In order to reduce the friction between the connecting plate 42 and the safety rail 41 and to maintain a stable movement of the connecting plate 42. In some embodiments of the present application, the guide assembly includes a second side plate 413 and a first roller set 45. Specifically, as shown in fig. 4a, the first roller set 45 is vertically disposed on the connecting plate 42 at a side close to the second side plate 413, and the first roller set 45 includes a first fixed roller 451, a second fixed roller 452, and a third fixed roller 453.

In some embodiments of the present disclosure, the first fixed roller 451 and the third fixed roller 453 abut against the second inner side surface S2 of the second side plate 413, and the second fixed roller 452 abuts against the third outer side surface S3 of the second side plate 413. Wherein the second fixed roller 452 is positioned between the first fixed roller 451 and the third fixed roller 453 in a vertical direction. In this way, the sliding friction between the second side plate 413 and the first roller set 45 on the connecting plate 42 is converted into rolling friction, thereby reducing the frictional force of the relative movement between the connecting plate 42 and the load-carrying assembly 2 and enabling the connecting plate 42 to stably move up and down along the second side plate 413.

To facilitate the mounting of the ratchet 43, to facilitate the connection of the connecting plate 42 to the load carrying assembly 2, and to reduce the footprint of the fall arrest rail 41. In some embodiments of the present application, as shown in fig. 2, the connecting plate 42 is disposed between the fall arrest rail 41 and the load carrying assembly 2 in the direction of the rotational axis of the load carrying assembly 2, the extending surface of the connecting plate 42 is perpendicular to the second side plate 413, the first side plate 411 and the second side plate 413 are parallel to the rotational axis of the load carrying assembly 2, and the waist plate 414 is perpendicular to the rotational axis of the load carrying assembly 2.

The connecting assembly between the connecting plate 42 and the load carrying member 2 will be described in detail with reference to fig. 2 to 4b and fig. 5 a.

As shown in fig. 4a, in some embodiments of the present application, the connecting assembly includes a connecting fixed roller 462 and a connecting rail 49, the connecting fixed roller 462 is disposed on the connecting plate 42 at a side close to the load-carrying member 2, the connecting rail 49 is disposed on a side of the load-carrying member 2 and extends along a first end toward a second end, the connecting fixed roller 462 is axially engaged in the connecting rail 49, and when the load-carrying member 2 rotates relative to the base 1, the load-carrying member 2 drives the connecting plate 42 to move through the engaging connecting rail 49 and the connecting fixed roller 462.

As shown in fig. 4a, in some embodiments of the present application, the connection assembly includes a second roller set 46 and a connection rail 49. The second roller set 46 includes a movable roller 461 and the above-mentioned connecting fixed roller 462, the movable roller 461 is slidably connected to the connecting plate 42 along the extending direction of the rack 412, the linear seam L is a movable track of the movable roller 461, the movable roller 461 is axially clamped in the connecting guide rail 49 along itself, the connecting plate 42 and the connecting guide rail 49 realize a double-point connection through the movable roller 461 and the fixed roller 462 so as to avoid the connecting plate 42 from twisting relative to the second side plate 413, and improve the stability of the connecting plate 42 in the moving process of the connecting plate 42 driven by the load-carrying assembly 2, so that the connecting plate 42 is translationally moved along the extending direction of the rack 412.

In some embodiments of the present application, the movable rollers 461 and the connection plate 42 are disposed on both sides of the second side plate 413 in the horizontal direction. When the load-carrying assembly 2 rotates relative to the base 1, the load-carrying assembly 2 drives the connecting plate 42 to move through the connecting guide rail 49 and the connecting fixed roller 462 which are clamped with each other, the movable roller 461 is used for adjusting the force of the connecting plate 42 along the direction vertical to the anti-falling guide rail 41, the rotation of the connecting plate 42 relative to the anti-falling guide rail 41 is reduced, and the stability of the connecting plate 42 in the moving process is further improved.

Through setting up above-mentioned coupling assembling, avoid taking place torsional stress between connecting plate 42 and the load subassembly 2 to and avoid between connecting plate 42 and the load subassembly 2 relative slip and cause both to break away from the connection. By arranging the guide assembly and the connecting assembly of the connecting plate 42, when the load-carrying member 2 rotates around the first end of the load-carrying member 2 to lift the load-carrying member 2 upwards, the ratchet wheel 43 moves along the direction parallel to the extending direction of the rack 412 under the guiding action of the guide assembly and the driving action of the connecting assembly.

In some embodiments of the present application, the connecting rail 49 is a C-shaped rail, as shown in fig. 4a and 4 b. The lateral sides of the C-shaped guide limit the lateral movement of the second roller set 46 to prevent the second roller set 46 from moving laterally out of engagement with the load carrying assembly 2. Meanwhile, in the process that the C-shaped guide rail moves up and down along with the load-carrying component 2, the upper and lower sides of the C-shaped guide rail can drive the second roller set 46 to move up and down, and further drive the connecting plate 42 connected with the second roller set 46 to move up and down.

As shown in FIG. 4a, during the lifting of the load carrying assembly 2, the ratchet wheel 43 is continuously caught on the rack 412, and the ratchet wheel 43 is always in the falling prevention state. Specifically, when the ratchet wheel 43 moves upward, the lower surface of the teeth on the rack 412 apply a resistance to the first flange 431 on the ratchet wheel 43, so that the ratchet wheel 43 rotates in the forward direction (i.e., the ratchet wheel 43 rotates clockwise as shown in fig. 5 a) under the resistance, and the first flange 431 on the ratchet wheel 43 is disengaged from the current tooth of the rack 412. Meanwhile, the torsion spring 441 is elastically deformed and stores elastic potential energy. When the ratchet wheel 43 rotates to a point on the ratchet wheel 43 closest to the rack 412 and is able to pass the point, the ratchet wheel 43 continues to move upward past the point. Then, the torsion spring 441 elastically returns and releases the elastic potential energy, the ratchet 43 reversely rotates (i.e. the ratchet 43 rotates counterclockwise as shown in fig. 5 a), and the torsion spring 441 generates a reverse restoring force, which makes the ratchet 43 reversely rotate, so that the first flange 431 of the ratchet 43 catches on the new tooth of the rack 412, and thus, the ratchet 43 is continuously caught on the rack 412 during the ascending process.

As shown in fig. 4b, after the vehicle body is unloaded and before the load carrying assembly 2 is lowered, the lifting device 3 raises the ratchet wheel 43 by one tooth, so that the first flange 431 on the ratchet wheel 43 is disengaged from the upper surface of the current tooth on the rack 412. Then, when the driving device 442 drives the ratchet wheel 43 to rotate reversely to the limit shaft 444, as shown in fig. 5b, the first flange 431 is disengaged from the rack 412. Here, the disengagement means that the ratchet wheel 43 rotates to a point on the ratchet wheel 43 closest to the rack 412 and can pass over the teeth when the load unit 2 is lowered. Then, the ratchet wheel 43 is driven by the load-carrying component 2 to descend, and the ratchet wheel 43 always keeps a gap with the tooth tips on the rack 412, so that the ratchet wheel 43 moves downwards along the extending direction of the rack 412.

As mentioned above, the hydraulic rod has the function of preventing falling, and in other embodiments, the falling prevention assembly 4 is a hydraulic rod disposed on both sides of the base 1 and the load bearing assembly 2 and near one end of the rotation axis of the base 1 and the load bearing assembly 2. The fixed end of hydraulic stem is connected in base 1, and the extension end of hydraulic stem is connected in load subassembly 2. In this embodiment, the extension and retraction speed of the hydraulic rod is adapted to the lifting device 3 to avoid affecting the lifting of the load carrying assembly 2.

In some embodiments of the present application, the vehicle body may be a structure for loading goods such as a truck, a container, a garbage truck, and the like. In addition, it will be appreciated that the above described fall arrest assembly 4 may also be applied in other loading tool unloading cargo application scenarios.

Because the load carrying member 2 has a certain height relative to the ground, in order to facilitate the movement of the vehicle body onto the load carrying member 2, in some embodiments of the present application, as shown in fig. 1a, 1b and 1c, a ladder 5 is provided at the second end of the base 1. Thus, the ground and the plane of the load-carrying component 2 are connected in a transition mode, and the vehicle body can be easily moved from the ground to the upper surface of the load-carrying component 2 conveniently.

In some embodiments, the ladder stand 5 is foldably or detachably connected to the base 1 in order to achieve a portable design of the above-described unloading mechanism.

In order to avoid the movement of the vehicle body during unloading, the unloading mechanism also comprises a fixing component for limiting the relative movement of the load-carrying component 2 and the vehicle body. For example, the securing assembly comprises a chain 6 arranged at the second end of the load carrying assembly 2 and a blocking means 6 arranged at the first end of the load carrying assembly 2 as shown in fig. 1 a. In the use state of the unloading mechanism, the load-carrying component 2 is connected with the second end of the vehicle body (the front end of the vehicle body) through the chain 6 at the second end, and the first end catch wheel device 22 on the load-carrying component 2 is positioned behind the rear wheel of the vehicle body. As shown in fig. 1b, when the vehicle body is lifted, the chain 6 pulls the second end of the vehicle body, and the catch wheel device 22 blocks the wheel of the first end of the vehicle body (the rear end of the vehicle body), the chain 6 engages with the catch wheel device 22 to prevent the vehicle body from moving toward the rear end. The maximum rotation angle of the load assembly 2 relative to the base 1 is 45 degrees, and backward overturning of the unloading mechanism and the vehicle body due to overlarge angle is avoided.

In order to realize the quick transfer of the unloading mechanism, the unloading requirements of different places are met. In some embodiments of the present application, a self-propelled system for moving the position of the above-described unloading mechanism is provided under the base 1. The self-propelled system comprises wheels, a wheel stopping device and a wheel driving device. The wheels are used for rotating and driving the unloading mechanism to move, the wheel stopping device is used for preventing the wheels from rotating, so that the unloading mechanism is fixed at a specified position, and the driving device is used for driving the wheels to rotate and further driving the unloading mechanism to move.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A unloading mechanism, comprising:

a base;

the first end of the load-carrying component is hinged to the base;

a lifting device for lifting the second end of the load carrying assembly;

the anti-falling component is arranged between the base and the load-carrying component and used for limiting the falling of the second end in the lifting state.

2. The unloading mechanism of claim 1, wherein the number of the anti-falling assemblies is at least two, and at least one anti-falling assembly is arranged on each of two sides of the load-carrying assembly.

3. The unloader mechanism of claim 1, wherein the fall arrest assembly comprises a rack, a web, a ratchet adjustment structure;

one end of the rack is arranged on the base, and the other end of the rack extends towards the lifting direction of the lifting device;

the ratchet wheel is arranged on the load-carrying component through the connecting plate and can move along the extending direction of the rack when the load-carrying component rotates relative to the base, and then the ratchet wheel is matched with the rack to limit the falling of the second end in a lifting state;

the ratchet wheel adjusting structure is connected with the ratchet wheel and used for adjusting the rotation angle of the ratchet wheel so as to realize and release the matching of the ratchet wheel and the rack.

4. A dump mechanism as in claim 3 wherein said ratchet has a flange and said ratchet adjustment mechanism adjusts said flange to alternately engage and disengage said rack during lifting of said load carrying assembly.

5. The vehicle offloading mechanism of claims 3 or 4 further comprising a connection assembly, the connection assembly comprising:

the connecting fixed roller is arranged on one side of the connecting plate;

the connecting guide rail is arranged on the load-carrying component and extends towards the second end along the first end, and the fixed roller is clamped in the connecting guide rail along the axial direction of the fixed roller;

when the load assembly rotates relative to the base, the load assembly drives the connecting plate to move through the connecting guide rail and the connecting fixed roller which are clamped with each other.

6. The vehicle offloading mechanism of claim 5 wherein the connection assembly further comprises:

the movable roller is connected to the connecting plate in a sliding mode along the extending direction of the rack and is clamped to the connecting guide rail along the axial direction of the movable roller;

the connecting plate and the connecting guide rail realize double-point connection through the movable roller and the fixed roller 462.

7. A vehicle offloading mechanism as claimed in claim 3 or 4, further comprising a guide assembly provided between the base and the load carrying assembly for guiding the web in the direction of extension of the rack.

8. The vehicle offloading mechanism of claim 7 wherein the guide assembly comprises:

the guide plate is arranged on the base and extends along the extending direction of the rack;

the first guide wheel is arranged on the connecting plate and is abutted against one side of the guide plate;

the second guide wheel is arranged on the connecting plate and abutted against the other opposite side of the guide plate, and the first guide wheel and the second guide wheel are matched with the guide plate to limit the connecting plate to move along the extending direction of the rack.

9. A dump mechanism as claimed in claim 3, wherein the ratchet adjustment arrangement comprises:

the driving device is arranged on the connecting plate and used for driving the ratchet wheel to rotate in the forward direction so as to release the matching between the ratchet wheel and the rack;

one end of the torsion spring is fixed on the connecting plate, the other end of the torsion spring is fixed on the ratchet wheel, the torsion spring elastically deforms in the process of forward rotation of the ratchet wheel and drives the ratchet wheel to rotate reversely through elastic recovery so as to realize the matching of the ratchet wheel and the rack;

the anti-falling shaft is fixed on the connecting plate and used for limiting the ratchet wheel to rotate reversely, and the ratchet wheel is matched with the rack.

10. The unloader mechanism of claim 9, wherein the ratchet adjustment mechanism further comprises:

the limiting shaft is fixed on the connecting plate and used for limiting the ratchet wheel to rotate in the forward direction, and the ratchet wheel and the rack are in a disengaged state.