Unmanned forklift

Abstract

The utility model discloses an unmanned forklift and belongs to the field of loading and unloading transportation mechanisms. An unmanned forklift comprises: a forklift body; the fork arm is arranged on the vehicle body; the unmanned forklift further comprises an extension arm which is arranged on the fork arm in a sliding mode. The driving group is arranged on the fork arm and is connected with the extension arm; the driving group is used for driving the extension arm to slide on the fork arm; the limiting group is arranged on the fork arm and is used for limiting the extension arm to slide on the fork arm; the detection module is arranged at the tail end of the extension arm; wherein a limiting groove is formed in the extension arm; and the limiting group is embedded into the limiting groove. The unmanned forklift has the beneficial effects that the unmanned forklift can adapt to different length specifications and is stable in transportation.

Description

Technical Field

[0001] The utility model relates to the field of loading and unloading transportation mechanisms, and in particular to an unmanned forklift. Background Art

[0002] Forklifts are various wheeled vehicles used for loading, unloading, stacking, and short-distance transport of palletized goods. With the increasing application of IoT and big data, unmanned forklifts are gradually replacing human-powered forklifts, enabling automated cargo handling through remote control.

[0003] A Chinese utility model patent with authorization announcement number CN213771197U discloses an unmanned forklift with a dual-wheel differential structure. The forklift includes a vehicle body, a forklift, a laser navigation radar, and an unmanned forklift control cabinet. The control cabinet includes an unmanned forklift operation control system and an electronic control system. The vehicle body is provided with two steering wheels, and a dual-wheel differential mechanism is provided between the steering wheels and the vehicle body. The unmanned forklift operation control system includes an automatic mode. In automatic mode, the unmanned forklift operation control system communicates with the electronic control system of the vehicle body, sends operation commands, and the electronic control system controls the operation of the two independent steering wheels. This changes the operating mode of the steering mechanism and can effectively solve the problems of high cost and difficult maintenance of existing unmanned forklift steering mechanisms. The steering mechanism is flexible and convenient, the structure is simple, easy to maintain, the control performance is stable, and the cost is low.

[0004] In the above structure, since the forks are of fixed size, when the length of the forked cargo and the cargo plate is much greater than the length of the forks, the forks are not stable enough based on the cargo plate, resulting in unstable cargo transportation and a high risk of rollover. Utility Model Content

[0005] The purpose of the present invention is to provide an unmanned forklift. The present invention can change the length of the fork arm by setting an extension arm, so that the fork arm can be adjusted according to the length of different goods, thereby improving adaptability and enhancing stability during transportation.

[0006] The content of this application is used to briefly introduce concepts that will be described in detail in the detailed description section below. The content of this application is not intended to identify key features or essential features of the technical solution for which protection is sought, nor is it intended to limit the scope of the technical solution for which protection is sought.

[0007] In order to solve the technical problems mentioned in the above background technology section, some embodiments of the present application provide an unmanned forklift, including:

[0008] body;

[0009] fork arm, located on the vehicle body;

[0010] Unmanned forklifts also include:

[0011] An extension arm is slidably mounted on the fork arm;

[0012] The driving group is provided on the fork arm and connected to the extension arm; the driving group is used to drive the extension arm to slide on the fork arm;

[0013] A limit group is provided on the fork arm and is used to limit the extension arm from sliding on the fork arm;

[0014] A detection module is provided at the end of the extension arm;

[0015] Wherein, a limit slot is provided on the extension arm; and the limit group is embedded in the limit slot.

[0016] Furthermore, the driver group includes:

[0017] A first driving member is provided on the fork arm;

[0018] A lifting member is slidably disposed on the fork arm and connected to the first driving member;

[0019] A connecting member is hinged to the fork arm and is located above the lifting member;

[0020] A gear rotatably mounted on the connecting member;

[0021] A second driving member is provided on the connecting member and is connected to the gear transmission;

[0022] The extension arm is provided with a tooth groove; the gear is engaged with the tooth groove.

[0023] Furthermore, the lifting member comprises:

[0024] a lifting portion connected to the first driving member;

[0025] The supporting portion is provided on the lifting portion, is located below the connecting member, and abuts against the connecting member;

[0026] Wherein, the lifting portion is located between the supporting portion and the first driving member.

[0027] Furthermore, the lifting portion has a lifting surface; the lifting surface is an inclined surface;

[0028] The height of the lifting surface close to the connecting piece is lower than the height of the lifting surface far from the connecting piece.

[0029] Furthermore, the limit group includes:

[0030] A limiting rod is provided on the connecting piece and is located above the connecting piece;

[0031] The spring is arranged on the connecting piece and is located below the connecting piece, with two ends respectively connected to the connecting piece and the fork arm.

[0032] Furthermore, the connecting piece is configured in a long strip shape.

[0033] Furthermore, the gear is located at one end of the connecting member; and the limiting rod is located at an end of the connecting member away from the gear.

[0034] Furthermore, the connecting member is hinged to the fork arm via a hinge shaft;

[0035] Wherein, the articulated shaft is located between the gear and the limiting rod.

[0036] Furthermore, there are multiple limiting grooves, which are arranged along the length direction of the extension arm.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] 1. By setting the extension arm, the length of the fork arm can be changed, so that the fork arm can be adjusted according to the length of different goods, improving adaptability and enhancing stability during transportation.

[0039] 2. By setting the lifting part, the connecting part is driven to swing, so that the gear can be separated from and engaged with the tooth groove. When it is necessary to drive the extension arm to move, the gear is engaged with the tooth groove. After fixing the extension arm, the gear is separated from the tooth groove. This can effectively prevent the extension arm from being pressed down by the weight of the cargo and compressing the gear, thereby extending the life of the gear.

[0040] 3. The connection is made through a connecting piece, and the gear and the limit rod are respectively arranged at both ends of the connecting piece, so that the swing of the connecting piece can realize the gear and the limit rod respectively engaging with the tooth groove and inserting into the limit groove, with synchronous action, simple structure and reduced cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The drawings constituting a part of this application are used to provide a further understanding of this application and make other features, purposes and advantages of this application more apparent. The drawings and descriptions of the exemplary embodiments of this application are used to explain this application and do not constitute an improper limitation on this application.

[0042] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the elements and components are not necessarily drawn to scale.

[0043] In the attached figure:

[0044] Figure 1 is an overall schematic diagram according to an embodiment of the present application;

[0045] Figure 2 It is a structural diagram of a part of the embodiment, mainly showing the structure of the drive group;

[0046] Figure 3It is a structural diagram of a part of the embodiment, mainly showing the limiting groove structure;

[0047] Figure 4 It is a structural diagram of a part of the embodiment, mainly showing the lifting member structure.

[0048] Reference numerals:

[0049] 100. Unmanned forklift;

[0050] 101. Vehicle body;

[0051] 102, fork arm;

[0052] 103, extension arm; 103a, limiting groove; 103b, tooth groove;

[0053] 104, driving group; 104a, first driving member; 104b, lifting member; 104c, connecting member; 104d, gear; 104e, second driving member; 104f, lifting portion; 104g, supporting portion; 104h, lifting surface;

[0054] 105, limit group; 105a, limit rod; 105b, spring;

[0055] 106. Detection module;

[0056] 107. Articulated shaft. DETAILED DESCRIPTION

[0057] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of protection of the present disclosure.

[0058] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0059] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0060] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, they should be understood as "one or more".

[0061] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0062] Reference Figure 1-4 An unmanned forklift 100 includes: a vehicle body 101, a fork arm 102, an extension arm 103, a driving group 104, and a limiting group 105; the fork arm 102 is fixed to the vehicle body 101 and is located at the front end of the vehicle body 101; the extension arm 103 is slidably provided on the fork arm 102, sliding along the length direction of the fork arm 102, and a limiting groove 103a and a tooth groove 103b are provided on the extension arm 103; the driving group 104 is provided on the fork arm 102, and is used to drive the extension arm 103 to slide on the fork arm 102; the limiting group 105 is provided on the fork arm 102, and is used to limit the extension arm 103 from sliding on the fork arm 102, and the limiting group 105 is partially embedded in the limiting groove 103a.

[0063] A detection module 106 is embedded in the end of the extension arm 103. The detection module 106 is a laser rangefinder. When the laser rangefinder detects that it is located below the cargo plate and the extension arm 103 has not penetrated the cargo plate, the laser is blocked by the cargo plate and it is detected that the distance is too short. At this time, the driving group 104 is required to drive the extension arm 103 to slide and extend the fork arm 102. When the extension arm 103 penetrates the cargo plate, the distance detected by the laser rangefinder is sufficient. At this time, the driving group 104 can be stopped and the extension arm 103 can be fixed.

[0064] There are a number of limiting grooves 103 a , which are evenly spaced along the length direction of the fork arm 102 .

[0065] The driving group 104 starts to drive the extension arm 103 to slide on the fork arm 102, and adjusts the length of the extension arm 103 and the fork arm 102, so that the forklift can adapt to cargo plates of different lengths and enhance the stability of the forklift in forking cargo.

[0066] The driving group 104 includes: a first driving member 104a, a lifting member 104b, a connecting member 104c, a gear 104d, and a second driving member 104e; the first driving member 104a adopts a hydraulic cylinder and is provided on the fork arm 102; the lifting member 104b is slidably provided on the fork arm 102 and is connected to the output end of the first driving member 104a; the connecting member 104c is hinged to the fork arm 102 through a hinge shaft 107, and the connecting member 104c is constructed into a long plate shape; the gear 104d is rotatably provided at one end of the connecting member 104c, and the gear 104d is connected to the tooth groove 103b; the second driving member 104e can adopt a servo motor, which is provided on the fork arm 102 and is connected to the gear 104d for driving the gear 104d to rotate forward and reverse.

[0067] The lifting member 104b is composed of a lifting portion 104f and a supporting portion 104g, and the lifting portion 104f is fixed on the output end of the first driving member 104a; the supporting portion 104g is constructed into a long plate shape, and the supporting portion 104g is integrally formed on the lifting portion 104f, and the supporting portion 104g is located at the lower end of the connecting member 104c and abuts against the connecting member 104c; the lifting portion 104f is located between the supporting portion 104g and the first driving member 104a; a lifting surface 104h is provided on the lifting portion 104f, and the lifting surface 104h is an inclined surface, and the height of the lifting surface 104h close to the supporting portion 104g is lower than the height of the lifting surface 104h away from the supporting portion 104g.

[0068] When the extension arm 103 is to be driven to slide and extend the fork arm 102, the first driving member 104a is started to drive the lifting member 104b to move away from the first driving member 104a, and the lifting surface 104h is pressed against the connecting member 104c, pushing the end of the connecting member 104c close to the lifting member 104b to swing up, allowing the gear 104d to move up and engage with the tooth groove 103b. Then the second driving member 104e is started, driving the gear 104d to rotate, and the gear 104d drives the extension arm 103 to slide, extending the length of the fork arm 102.

[0069] The limiting group 105 includes: a limiting rod 105a and a spring 105b; the limiting rod 105a is fixed to the end of the connecting member 104c away from the gear 104d, located above the connecting member 104c, and the limiting rod 105a is inserted into the limiting groove 103a; the hinge shaft 107 is located between the limiting rod 105a and the gear 104d; the two ends of the spring 105b are respectively fixed to the connecting member 104c and the fork arm 102, and the spring 105b is located below the end of the connecting member 104c away from the gear 104d, and is used to drive one end of the gear 104d on the connecting member 104c to swing downward, so that the limiting rod 105a moves up and is inserted into the limiting groove 103a.

[0070] When the gear 104d moves up, the limit rod 105a moves down, and the limit rod 105a is pulled out from the limit groove 103a, canceling the sliding limit of the extension arm 103. Then the gear 104d rotates to drive the extension arm 103 to slide. When the extension arm 103 needs to be fixed after sliding, the first driving member 104a is started, driving the lifting member 104b to move in the direction of the first driving member 104a. Under the elastic force of the spring 105b, the end of the connecting member 104c with the gear 104d is pushed downward to abut against the lifting surface 104h, so that the gear 104d is separated from the tooth groove 103b. At the same time, the end of the connecting member 104c with the limit rod 105a moves up, so that the limit rod 105a is inserted into the limit groove 103a, limiting the extension arm 103 and fixing the extension arm 103.

[0071] When the extension arm 103 is to be retracted, the above operation is repeated, but the gear 104d is reversed to drive the extension arm 103 to retract, and then the limiting rod 105a is inserted into the limiting groove 103a to limit and fix the extension arm 103.

[0072] The above description is only an illustration of some preferred embodiments of the present disclosure and the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure.

Claims

1. An unmanned forklift, comprising: Vehicle body (101); A fork arm (102) is provided on the vehicle body (101); Its characteristics are: The unmanned forklift further comprises: An extension arm (103) is slidably disposed on the fork arm (102); A driving group (104) is provided on the fork arm (102) and connected to the extension arm (103); the driving group (104) is used to drive the extension arm (103) to slide on the fork arm (102); a limit group (105), provided on the fork arm (102), for limiting the sliding of the extension arm (103) on the fork arm (102); A detection module (106) is provided at the end of the extension arm (103); Wherein, a limiting groove (103a) is provided on the extension arm (103); and the limiting group (105) is embedded in the limiting groove (103a).

2. The unmanned forklift according to claim 1, characterized in that: The drive group (104) includes: A first driving member (104a) is provided on the fork arm (102); a lifting member (104b) slidably disposed on the fork arm (102) and connected to the first driving member (104a); A connecting member (104c) is hinged to the fork arm (102) and is located above the lifting member (104b); a gear (104d) rotatably mounted on the connecting member (104c); A second driving member (104e) is provided on the connecting member (104c) and is in transmission connection with the gear (104d); Wherein, the extension arm (103) is provided with a tooth groove (103b); and the gear (104d) is meshed with the tooth groove (103b).

3. The unmanned forklift according to claim 2, characterized in that: The lifting member (104b) comprises: A lifting portion (104f) connected to the first driving member (104a); A supporting portion (104g) is provided on the lifting portion (104f), is located below the connecting member (104c), and abuts against the connecting member (104c); Wherein, the lifting portion (104f) is located between the supporting portion (104g) and the first driving member (104a).

4. The unmanned forklift according to claim 3, characterized in that: The lifting portion (104f) has a lifting surface (104h); the lifting surface (104h) is an inclined surface; Wherein, the height of the end of the lifting surface (104h) close to the connecting member (104c) is lower than the height of the end of the lifting surface (104h) away from the connecting member (104c).

5. The unmanned forklift according to claim 2, characterized in that: The limiting group (105) includes: A limiting rod (105a) is provided on the connecting member (104c) and is located above the connecting member (104c); The spring (105b) is provided on the connecting member (104c) and is located below the connecting member (104c), with two ends respectively connected to the connecting member (104c) and the fork arm (102).

6. The unmanned forklift according to claim 5, characterized in that: The connecting piece (104c) is configured in a long strip shape.

7. The unmanned forklift according to claim 6, characterized in that: The gear (104d) is located at one end of the connecting member (104c); and the limiting rod (105a) is located at one end of the connecting member (104c) away from the gear (104d).

8. The unmanned forklift according to claim 7, characterized in that: The connecting member (104c) is hinged to the fork arm (102) via a hinge shaft (107); Wherein, the hinge shaft (107) is located between the gear (104d) and the limiting rod (105a).

9. The unmanned forklift according to claim 1, characterized in that: There are a plurality of limiting grooves (103a) arranged along the length direction of the extension arm (103).

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