CN220243200U

CN220243200U - Hand-held operation machine and hand-held operation machine

Info

Publication number: CN220243200U
Application number: CN202322036426.XU
Authority: CN
Inventors: 李孝先; 邓云海; 刘健
Original assignee: Hunan Province Ground Unmanned Equipment Engineering Research Center Co ltd
Current assignee: Hunan Province Ground Unmanned Equipment Engineering Research Center Co ltd
Priority date: 2023-07-31
Filing date: 2023-07-31
Publication date: 2023-12-26
Anticipated expiration: 2033-07-31

Abstract

The utility model relates to the technical field of working machines, and provides a hand-free protection device of a hand-held working machine and the hand-held working machine. The hand-free protection device for a hand-held work machine comprises: the device comprises a machine body and a connecting piece, wherein the machine body is provided with an induction piece and a controller, and the induction piece is in communication connection with the controller; the connecting piece is used for connecting the mechanical body and the user, is provided with the trigger part, and trigger part and sensing piece can switch between sensing state and release state, and in sensing state, the connecting piece is connected with the mechanical body, and in release state, the connecting piece breaks away from the mechanical body, and the signal that the sensing piece and trigger part disconnected is received and brake signal is sent to the controller. The hand-free protection device of the hand-held operation machine provided by the utility model is used for solving the defect that in the prior art, a user breaks away from the hand-held operation mechanism to have potential safety hazards of incapability of stopping, and the trigger part of the connecting piece is matched with the induction piece of the machine body to realize the hand-free protection, so that the safety of the hand-held operation machine is improved.

Description

Hand-held operation machine and hand-held operation machine

Technical Field

The utility model relates to the technical field of working machines, in particular to a hand-free protection device of a hand-held working machine and the hand-held working machine.

Background

Work machines are of various kinds, some of which are operated by a user in a cab, such as an excavator, some of which do not have a cab, the user controls the travel of the equipment by holding the equipment, and the user travels in synchronization with the equipment, such as a cart. For hand-held machines, there are various forms, such as a cart, including a single wheel, two wheels, three wheels, four wheels, etc., a power-assisted cart with electric power assistance, or a manual cart without power assistance. The industrial trolley is generally assisted and bears larger load. In the traveling process of the cart, the traveling state of the cart and the traveling state of the user are kept consistent as much as possible, but if the cart breaks down or the user falls down, if the user falls down, the cart can be separated from the user, after the cart is separated from the user, the cart cannot be automatically braked, the cart continues traveling under the action of inertia or external force driving, hidden danger can be brought to the safety of the cart and the safety of the surrounding environment, particularly the electric cart can have continuous traveling power, and the existing hidden danger is large.

Disclosure of Invention

The utility model provides a hand-free protection device of a hand-held operation machine, which is used for solving the defect that a user breaks away from the hand-held operation mechanism to have potential safety hazards of incapability of stopping in the prior art, and realizing the hand-free protection by matching a trigger part of a connecting piece with an induction piece of a machine body, so that the safety of the hand-held operation machine is improved.

An embodiment of a first aspect of the present utility model provides a hand-held work machine, including:

the mechanical body is provided with an induction piece and a controller, and the induction piece is in communication connection with the controller;

the connecting piece is used for connecting the mechanical body and a user, a trigger part is arranged, the trigger part and the sensing piece can be switched between a sensing state and a releasing state, the connecting piece is connected with the mechanical body in the sensing state, the connecting piece is separated from the mechanical body in the releasing state, and the controller receives signals of the sensing piece and the trigger part and sends braking signals.

According to the utility model, the induction piece is a magnetic induction sensor, and the triggering part is provided with a magnetic material.

According to the utility model, the sensing piece is at least one of a travel switch and a photoelectric switch, the triggering part and the sensing piece sense in the sensing state, and the triggering part is separated from the sensing piece in the releasing state.

According to the utility model, the mechanical body comprises an operating rod, and the sensing piece is connected to the operating rod.

According to the utility model, the connecting piece is a safety rope, and at least one end of the safety rope is provided with the triggering part.

According to the utility model, the triggering part and the machine body are connected in at least one mode of binding connection, clamping connection, plugging connection, sticking connection and magnetic attraction connection.

In a second aspect of the present utility model, there is provided a hand-held working machine comprising an electric brake, a running gear and a hand-off protection device for the hand-held working machine as defined in any one of the preceding claims, wherein the electric brake is in communication with the controller, and the electric brake brakes the running gear based on the brake signal sent by the controller.

The utility model provides a handheld working machine, which further comprises a driving mechanism, wherein the driving mechanism is in communication connection with a controller and is used for driving a traveling mechanism to move, and the driving mechanism stops based on a braking signal sent by the controller.

According to the present utility model, there is provided a hand-held working machine in which the traveling mechanism is connected to a mechanical brake, and an operation portion of the mechanical brake is connected to an operation lever of the machine body.

According to the utility model, a handheld work machine is provided, the running gear comprising a wheel running gear or a crawler running gear.

According to the hand-held operation machine hand-off protection device, the trigger part is arranged on the connecting piece and matched with the sensing piece of the machine body, when a user breaks away from the control of the machine body, the trigger part can release the sensing relation with the sensing piece, the controller receives the change of the signal, the user can be determined to break away from the machine body based on the fact that the controller receives the signal of releasing the sensing of the trigger part and the sensing piece, and at the moment, the user can not accurately control the operation of the machine body, and the controller controls the machine body to brake, so that the brake control is simple, the hand-off protection can be performed on the hand-held operation machine, and the safety of the hand-held operation machine is improved.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of the structure of a hand-held work machine of the present utility model;

FIG. 2 is a schematic elevational view of the hand-held work machine of the present utility model;

FIG. 3 is a schematic side view of the hand-held work machine of the present utility model;

reference numerals:

1. a controller; 2. a driving mechanism; 3. a mechanical brake; 4. an electric brake; 5. a walking mechanism; 6. an operation lever; 7. a machine body; 8. a material; 9. a trigger part; 10. a connecting piece; 11. and the induction piece.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Before describing the embodiments of the present utility model, the hand-held working machine may be understood as a device that needs to be held (gripped or manually controlled) by a user, the user needs to move synchronously with the device, if unexpected situations such as a fall, a jam or the like occur to the user, the hand-held working machine may be separated from the user to continue traveling, and the hand-held working machine may be understood as a cart (a moped or a non-moped), an electric vehicle, a motorcycle or the like.

When the handheld operation machinery is a power-assisted vehicle, the speed of the vehicle is controlled by the rotating accelerator when the power-assisted vehicle advances and retreats, and the problem of using the power-assisted vehicle on a flat road surface is not great, but the speed of the vehicle is difficult to control due to shaking of the whole vehicle on mountain roads and muddy roads, if the speed is stabilized by the rotating positioning device, the hand-free protection function is lost, and the technical scheme of the utility model can solve the problems.

An embodiment of a first aspect of the present utility model, as shown in fig. 1 to 3, provides a hand-held working machine hand-off protection device, including: the device comprises a machine body 7 and a connecting piece 10, wherein the machine body 7 is provided with a sensing piece 11 and a controller 1, and the sensing piece 11 is in communication connection with the controller 1; the connecting piece 10 is used for connecting the machine body 7 and a user, the connecting piece 10 is provided with a trigger part 9, the trigger part 9 and the sensing piece 11 can be switched between a sensing state and a releasing state, the connecting piece 10 is connected with the machine body 7 in the sensing state, the connecting piece 10 is separated from the machine body 7 in the releasing state, and the controller 1 receives a signal that the sensing piece 11 is disconnected from the trigger part 9 and sends a braking signal.

Before a user operates the handheld working machine, the handheld working machine is connected with the machine body 7 through the connecting piece 10, the triggering part 9 and the sensing piece 11 are ensured to be in a sensing state, and the controller 1 receives a first signal transmitted by the sensing piece 11 based on communication connection between the sensing piece 11 and the controller 1; in the process of operating the handheld working machine by a user, when the operator falls down or breaks away from the handheld working machine, the connecting piece 10 is disconnected with the mechanical body 7, the trigger part 9 and the sensing piece 11 are in a released state, the second signal transmitted by the sensing piece 11 is received by the controller 1 based on the communication connection between the sensing piece 11 and the controller 1, the mechanical body 7 can be controlled by the controller 1 to brake based on the second signal, the automatic braking of the handheld device is realized, the problem that the handheld device breaks away from the user and is out of control is solved, and the safety of the handheld device is improved.

One of the first signal and the second signal may be at a high level 1, and the other one is at a low level 0, and when the controller 1 receives the second signal, a braking signal is sent, and the braking signal may be sent to the brake or the driving mechanism 2.

In the embodiment of the utility model, the trigger part 9 and the sensing piece 11 can be repeatedly combined and separated, and are associated with and separated from a user through the connecting piece 10, so that the safety of the user and the handheld operation equipment is protected. When the handheld operation equipment is a trolley, the safe movement of the material 8 in the trolley can be ensured, the structure is simple, the structural influence on the handheld operation equipment is small, and the optimization cost is low.

In the hand-held working machine of the embodiment of the present utility model, the machine body 7 may be understood as: the brake and the driving mechanism 2 are not included, but the machine body 7 may be provided with the controller 1 and connected to the connector 10, and the machine body 7 may include a handle, a frame, or the like held by a user.

The user and the connecting piece 10 can be fixed through binding, a clamping hook and other modes, the connection stability of the user and the connecting piece 10 needs to be ensured, when the user is separated from the machine body 7, the connecting piece 10 cannot be separated from the user, and correspondingly, the triggering part 9 of the connecting piece 10 needs to be synchronously separated from the sensing piece, so that the automatic braking function of the handheld operation machine is triggered in time.

The connection mode between the trigger portion 9 of the connecting piece 10 and the mechanical body 7 needs to ensure that the trigger portion 9 and the sensing piece 11 can be separated, the trigger portion 9 and the sensing piece 11 are sensitive in triggering, and the trigger portion 9 and the mechanical body 7 are connected through at least one mode of binding connection, clamping connection, plugging connection, pasting connection and magnetic attraction connection. The connection between the trigger 9 and the machine body 7 is varied and can be selected as needed. The trigger part 9 can be directly connected with the sensing piece 11, and the trigger part 9 can also be connected with the casing or other structures of the machine body 7, so that the trigger part 9 can trigger the sensing piece 11 to generate signal change.

In some embodiments, the sensing element 11 is a magnetic induction sensor and the triggering portion 9 is provided with a magnetic material. When the trigger part 9 is connected with the mechanical body 7, the magnetic induction sensor can sense with the magnetic material, so that the controller 1 receives a first signal sent by the magnetic induction sensor; when the user leaves the machine body 7, the trigger part 9 moves along with the user, and the trigger part 9 leaves the sensing area of the magnetic induction sensor, so that the controller 1 receives the second signal sent by the magnetic induction sensor.

When the trigger portion 9 is made of a magnetic material, it may be a magnetic sheet, a magnetic block, a magnetic strip, or the like, and the shape of the magnetic material is various, and the magnetic material may be a permanent magnet, iron, or the like, without limitation.

The connector 10 may be a strip-like structure such as a rope, a belt, etc.; the connecting piece 10 can be made of magnetic materials, and a plurality of parts of the connecting piece 10 can be used as the triggering part 9; alternatively, at least one end of the connector 10 is a trigger 9. The triggering part 9 can be connected with the magnetic induction sensor through magnetic attraction, the connecting piece 10 can be fastened on a user during running of the mechanical body 7, and when the user falls down or breaks away from the mechanical body 7, the connecting piece 10 drives the triggering part 9 to leave the magnetic induction sensor, and the controller 1 receives a second signal and then controls the mechanical body 7 to brake. For example, when the hand-held work machine is a cart, the controller 1 sends a braking signal to the motor of the drive mechanism 2 and the electric brake 4, and the cart stops.

When the trigger portion 9 is a magnetic sheet, the magnetic sheet can be adhered to the palm of a user, that is, the connecting piece 10 is a sheet structure capable of being adhered to the palm of the hand, the magnetic induction sensor is mounted on the operating rod 6 (such as a handle) of the mechanical body 7, the user grasps the operating rod 6 to generate an induction signal between the magnetic induction sensor and the magnetic material, the controller 1 receives the first signal, when the user falls down or breaks away from the mechanical body 7, the hand of the user breaks away from the operating rod 6, the induction signal between the magnetic induction sensor and the magnetic material disappears, and the controller 1 receives the second signal to control the mechanical body 7 to brake.

In some embodiments, the sensing element 11 is at least one of a travel switch and a photoelectric switch, and in the sensing state, the triggering portion 9 senses with the sensing element 11, and in the releasing state, the triggering portion 9 is separated from the sensing element 11.

When the sensing member 11 is a travel switch, the trigger 9 contacts the travel switch in the sensing state, and the trigger 9 is separated from the travel switch in the releasing state, so that the travel of the travel switch is changed, and the signal received by the controller 1 is changed. At this time, the triggering part 9 can be connected with the mechanical body 7 through binding, clamping, inserting, bonding, magnetic attraction and other modes, and the triggering part 9 provides external force (such as extrusion force) for the travel switch, so that the travel of the travel switch is changed.

When the sensing element 11 is a photoelectric switch, the trigger part 9 can be connected with the machine body 7 by binding, clamping, inserting, bonding, magnetic attraction and other modes, the trigger part 9 enables the photoelectric switch to be switched to receive a set optical signal, or the trigger part 9 enables the photoelectric switch to be switched to be incapable of receiving the optical signal, the trigger part 9 can be a shading structure or can emit the set optical signal, and the structure of the trigger part 9 can be selected according to requirements.

In some embodiments, the mechanical body 7 includes an operation lever 6, the sensing member 11 is connected to the operation lever 6, the user controls the mechanical body 7 by contacting the operation lever 6, the sensing member 11 is connected to the operation lever 6, and the triggering portion 9 is conveniently connected to the sensing member 11, so that the user can easily operate the device.

The operating lever 6 can be understood as a handle, among other things. Of course, the sensing element 11 may also be connected to other parts of the machine body 7, such as the frame.

In some embodiments, the connection element 10 is a safety rope, through which the user is connected to the machine body 7, protecting the user; at least one end of the safety line is provided with a triggering portion 9, the end of the safety line being available for triggering the sensing member 11.

When the trigger part 9 is positioned at one end of the safety rope, the other end of the safety rope can be provided with a clamping hook for connecting with a user; when the triggering part 9 is positioned at two ends of the safety rope, any one end of the safety rope can be used for triggering the sensing piece 11, so that the structure of the safety rope is simplified.

The above description is given of the hand-free protector of the hand-held working machine, and the hand-held working machine will be described below.

An embodiment of the second aspect of the present utility model, as shown in fig. 2 and 3, provides a hand-held working machine, including an electric brake 4, a running gear 5, and a hand-held working machine hand-free protection device as described above, wherein the electric brake 4 is in communication with the controller 1, and the electric brake 4 brakes the running gear 5 based on the controller 1 sending a braking signal. The hand-free protection device of the hand-held operation machine has the beneficial effects, and the specific reference of the hand-free protection device of the hand-held operation machine is omitted herein.

The hand-held working machine comprises an electric brake 4 and a travelling mechanism 5, and a brake signal sent by the controller 1 can be sent to the electric brake 4, and the electric brake 4 acts to enable a brake acting force to act on the travelling mechanism 5 so as to control the hand-held working machine to stop.

The electric brake 4 may be a central brake, such as an electromagnetic brake.

The machine body 7 is also provided with a loading area for transporting the material 8 by movement of the machine body 7.

In some embodiments, running gear 5 comprises a wheeled running gear or a crawler running gear. The form of the travelling mechanism 5 is various and can be selected according to the requirement. Referring to fig. 2 and 3, a crawler running mechanism is illustrated. The wheel type travelling mechanism can be single wheel, double wheel, three wheel, four wheel and the like, and has various structures.

In some embodiments, the handheld work machine further comprises a drive mechanism 2, the drive mechanism 2 being in communication with the controller 1, the drive mechanism 2 being configured to drive the running gear 5 in motion, the drive mechanism 2 being disabled based on the controller 1 sending a braking signal. Based on the braking signal, the driving mechanism 2 stops supplying the driving force to the traveling mechanism 5, and the hand-held working machine is stopped stably by combining the braking by the electric brake 4.

Wherein, the driving mechanism 2 needs to be powered by a storage battery, the driving mechanism 2 can be a motor, and the driving mechanism 2 and the electric brake 4 can be positioned below the carrying area. The driving mechanism can also comprise a speed reducer and a storage battery, wherein the speed reducer is used for speed regulation, and the storage battery is used for providing driving power.

In the case where the hand-held working machine is not provided with the drive mechanism 2, the user can manually drive the hand-held working machine.

In some embodiments, the running gear 5 is connected with a mechanical brake 3, and an operation part of the mechanical brake 3 is connected with an operation rod 6 of a mechanical body 7.

The mechanical brake 3 is generally disposed on the tire side, is controlled by one hydraulic oil path, and needs an operation portion (such as a handle) to perform a braking operation by hand when in use.

The operation unit of the mechanical brake 3 may be a brake lever, a brake handle, or the like, and the user manually drives the operation unit to move to apply a braking force to the traveling mechanism 5. In the advancing process of the handheld working machine, a user can brake by driving the operation part to move, and the operation is convenient.

The operating lever 6 of the machine body 7 is provided with control switches including start and stop switches, shift switches (forward shift, reverse shift, neutral), speed regulation switches (acceleration, deceleration) and the like.

When the sensing piece 11 is connected to the operating rod 6, automatic braking and manual and automatic operation are both located on the operating rod 6, the functions are concentrated, and the operation is simple and convenient.

When the hand-held working machine is a cart, the cart has a machine body 7, a crawler or wheel-type traveling mechanism, a motor, a speed reducer, a storage battery, an electric brake 4, a mechanical brake 3, a controller 1, an operating device, and the like.

In addition, the hand-held operation machine has a steering function, light load can be steered by manpower, but heavy load can be steered by electric control, and the steering device for providing the steering function comprises a left braking steering device and a right braking steering device, wherein the left braking steering device and the right braking steering device are both connected with the controller 1, and the controller 1 sends a left braking steering control signal and a right braking steering control signal to the travelling mechanism 5.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A hand-held work machine's hand-out protection device, comprising:

2. The apparatus according to claim 1, wherein the sensing member is a magnetic induction sensor, and the trigger portion is provided with a magnetic material.

3. The apparatus according to claim 1, wherein the sensor is at least one of a travel switch and a photoelectric switch, and the trigger unit is configured to sense the sensor in the sensing state, and is configured to be disengaged from the sensor in the releasing state.

4. The apparatus of claim 1, wherein the machine body includes a lever, and the sensing member is coupled to the lever.

5. The apparatus according to claim 1, wherein the connecting member is a safety rope, and at least one end of the safety rope is provided with the trigger portion.

6. The apparatus according to any one of claims 1 to 5, wherein the trigger portion is connected to the machine body by at least one of a binding connection, a clamping connection, a plugging connection, a sticking connection, and a magnetic connection.

7. A hand-held work machine comprising an electric brake, a running gear, and the hand-off protection device of the hand-held work machine according to any one of claims 1 to 6, the electric brake being communicatively connected to the controller, the brake signal being sent based on the controller, the electric brake braking the running gear.

8. The hand-held work machine of claim 7, further comprising a drive mechanism in communication with the controller, the drive mechanism for driving the travel mechanism in motion, the drive mechanism being stopped based on the controller sending a brake signal.

9. The hand-held working machine according to claim 7, wherein a mechanical brake is connected to the traveling mechanism, and an operation portion of the mechanical brake is connected to an operation lever of the machine body.

10. The handheld work machine of claim 7, wherein the travel mechanism comprises a wheeled travel mechanism or a crawler travel mechanism.