JP2020069938A - Traveling aids for trolleys for transportation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the connection mechanism of a traveling assist device driven by power to surely connect with one transportation trolley with one touch even if there is a difference in frame shape and dimensions of the transportation trolley. (EN) Provided is a travel assistance device for a transporting trolley capable of sufficiently securing safe travelability without easily releasing a connection mechanism even when a travel road surface or a travel form changes.
SOLUTION: A travel assistance mechanism portion configured to be freely driven by power, a connection frame mechanism portion integrally configured by pivotally supporting a lower portion of the travel assistance mechanism portion, and an engagement frame attached to the connection frame mechanism portion so as to be vertically movable. A transporting trolley characterized by comprising a mechanism portion, and further having a lower hook portion and an upper hook portion projectingly provided on a front surface portion of the engaging frame mechanism portion.
[Selection diagram] Figure 1

Description

  The present invention relates to a travel assistance device for a carriage.

  Conventionally, in a factory, a large store, a distribution center, etc., a carrier truck is used for transporting assembly materials and products.

  The carrier for transporting has a caster attached below the luggage board, and a substantially lattice-shaped frame of a predetermined height is erected on the three side edges of the luggage board, so that the operator grips the frame. While pushing and pulling, the trolley is conveyed to a predetermined position, and loading work is carried out at the predetermined position.

  However, due to the recent lack of manpower, there is a tendency for people to refrain from the work of transporting such a load of several hundred kilograms by a carrier truck. This has been a cause of increasing labor shortage.

  At a work site in such heavy-duty baggage transport work, a travel assistance device has been developed that can be connected to a transport dolly and assist the travel of the transport dolly by power as an idea of work improvement (for example, see Patent Document 1). ..).

JP, 2016-217746, A

  This travel assistance device is configured so that the front end portion of the travel assistance device is engaged with a lattice-shaped frame of a carrier truck to assist travel with an electric motor.

  However, such a travel assistance device has many problems in terms of safety and operability, and particularly, it is not possible to easily perform connection and separation work with a dolly with one touch, and on the other hand, operability is good. However, the safety was not sufficiently ensured, and there was a risk of causing an unexpected fall accident during traveling and transportation work.

  According to the present invention, the connection mechanism of the traveling assist device driven by power is improved so that even if there is a difference in the frame shape or size of the transportation carriage, it can be securely connected to any transportation carriage with one touch. It is an object of the present invention to provide a travel assistance device for a transporting trolley that can sufficiently secure safe travelability without the connection mechanism being easily released even when the travel road surface or travel form changes.

  The present invention relates to a traveling assist mechanism portion configured to be movable by power, a connecting frame mechanism portion integrally supported by a lower portion of the traveling assist mechanism portion, and an engaging frame mounted to the connecting frame mechanism portion so as to be vertically movable. It is intended to provide a traveling auxiliary device for a carrier truck, which comprises a mechanism portion and further has a lower hook portion and an upper hook portion projectingly provided on the front surface of the engaging frame mechanism portion. ..

  In addition, the engaging frame mechanism can be moved up and down along a guide lot that is vertically installed at the front of the connecting frame mechanism, and a manual lifting force assist is provided between the engaging frame mechanism and the connecting frame mechanism. The magnet and the gas spring are interposed.

  Further, handles are provided on the left and right sides of the engagement frame mechanism portion, and are used for a manual lifting operation of the engagement frame mechanism portion and a stable grip operation of the engagement frame mechanism portion during traveling by the traveling auxiliary mechanism portion. It is characterized by

  Further, on the front surface of the traveling assistance mechanism portion, a frame holding body that is urged forward toward the upper hook portion of the engaging frame mechanism portion is provided so as to project, and a carrying cart is provided between the upper hook portion and the frame holding body. It is characterized in that the car frame is configured to be engaged and sandwiched.

  Further, the lower hook part and the upper hook part projectingly provided on the front surface of the engaging frame mechanism part move upward when the engaging frame mechanism part is in surface contact with the car frame of the carriage. The upper and lower hooks are configured not to engage with the car frame, and the upper and lower hooks are configured to engage with the car frame by lowering the engaging frame mechanism. And

  Further, the lower end of the connecting frame mechanism is pivotally connected to the traveling assist mechanism at the lower end, and the traveling assist mechanism is configured to be tiltable at a certain angle in the front part of the connecting frame mechanism to assist the traveling of the carriage. It is characterized in that sometimes the traveling assist mechanism is tilted at a certain angle to concentrate the power traveling stress on the lower part of the transport carriage via the engaging frame mechanism so that smooth traveling can be performed. ..

  In addition, the connection hook mechanism is interposed between the connection frame mechanism portion and the travel assistance mechanism portion, and the operation handle provided on the travel assistance mechanism portion enables the attachment / detachment operation of the connection hook mechanism.

  Further, an operation panel surface is provided on the traveling assist mechanism, a substantially U-shaped operation handle is provided on the front portion of the operation panel surface, and the operation panel surface is surrounded above, laterally and below the operation panel surface. In this state, a traveling operation handle composed of a substantially rectangular shaft body is provided, and the lower shaft body of the traveling operation handle is configured to allow traveling adjustment along with the front-back direction operation of the traveling operation handle, and further, the steering handle and the traveling operation handle. Is characterized in that the operator's palm can be simultaneously gripped to adjust the traveling operation.

  A posture stabilizing plate is provided on the side of the wheel of the traveling assist mechanism, and the stabilizing plate is configured to perform the stabilizer function when the traveling assist mechanism is erected vertically on the ground or floor. Characterize.

  According to the first aspect of the present invention, the traveling assist mechanism portion configured to be movable by power, the connecting frame mechanism portion integrally supporting the lower portion of the traveling assist mechanism portion, and the connecting frame mechanism portion being vertically movable. Since the engaging frame mechanism part is attached, and the lower hook part and the upper hook part are provided on the front part of the engaging frame mechanism part, the connecting frame mechanism part is tilted and connected from the traveling auxiliary mechanism part. The engaging frame mechanism part can be vertically expanded and contracted from the frame mechanism part to freely change the posture of the engaging frame mechanism part so that the upper and lower hooks engage with the car frame. Even if there is a difference in size, it can be securely connected to any transport cart with one touch, and the connection mechanism does not easily release even if the road surface or running form changes. It is sufficiently perform the effect to ensure the total running property.

  That is, since the engaging frame mechanism portion and the connecting frame mechanism portion are configured to be vertically movable in the vertical and forward / backward directions with respect to the traveling auxiliary mechanism portion, they are heavy objects when connecting the auxiliary device to the trolley. It is possible to easily engage only the engaging frame mechanism part with the car frame of the carriage without having to lift the entire travel assist mechanism part, and carelessly tip the travel assist mechanism part to injure the operator or the travel assist device itself. This has the effect of preventing accidents such as damage to the body.

  According to the invention of claim 2, the engagement frame mechanism portion can be raised and lowered along a guide lot vertically provided on the front portion of the connection frame mechanism portion, and between the engagement frame mechanism portion and the connection frame mechanism portion. Since a magnet and a gas spring are provided for assisting the lifting force manually, a magnet is used to connect the engaging frame mechanism part with the frame of the transporting carriage. A function of exerting a lifting biasing force that allows the engaging frame mechanism to be lifted manually as much as possible by manually lifting the engaging frame mechanism to connect it to the frame of the carriage by the gas spring. There is an effect that can be.

  According to the third aspect of the present invention, since the handles are provided on the left and right sides of the engagement frame mechanism part, the operator grips the handle and manually raises and lowers the engagement frame mechanism part and the travel assist mechanism part. It is possible to carry out a stable gripping operation of the engaging frame mechanism portion during traveling by means of, and to perform the connection work to the transport carriage easily and safely.

  According to the invention of claim 4, on the front surface of the traveling assistance mechanism portion, a frame holding body projectingly biased toward the upper hook portion of the engaging frame mechanism portion is provided so as to project, and the upper hook portion and the frame holding body are provided. Since the car frame of the carriage is engaged and sandwiched between the and, the connection mechanism is inadvertently released from the car frame even when the traveling road surface or running form of the carriage changes during travel assistance operation. In other words, there is an effect that sufficient safe driving performance can be secured.

  According to the invention of claim 5, the lower hook portion and the upper hook portion projecting from the front surface portion of the engagement frame mechanism portion are in a state where the engagement frame mechanism portion is in surface contact with the car frame of the carriage. The engaging frame mechanism is raised so that the upper and lower hooks are not engaged with the car frame, and the upper and lower hooks are engaged with the car frame by lowering the engaging frame mechanism. Since it is configured as described above, there is an effect that it is possible to easily connect and separate the travel auxiliary device to and from the transportation cart with one touch.

  According to the invention of claim 6, the lower end of the connection frame mechanism portion is pivotally connected to the travel assistance mechanism portion at the lower end portion, and the travel assistance mechanism portion has a certain angle behind the connection frame mechanism portion with the pivotal support portion as the center. It is configured so that it can be tilted freely, and when traveling alone before being connected to the transport carriage, the traveling assist mechanism part is configured to tilt at a certain angle so that the front power wheel and the rear auxiliary caster are in the grounded state. When the vehicle is connected to a transporting carriage, when the vehicle is assisted in traveling, the traveling assist mechanism and the engaging frame mechanism are set in a vertical posture so that only the front power wheel is in a grounded state. The center of gravity of the device can be stabilized at the fulcrum to improve the running stability of the travel assist device, and the center of gravity of the device can be stabilized at the fulcrum of the carriage and the power wheels when assisting the connected travel. There is an effect capable of improving the traveling operation of such conversion in the running direction.

  According to the invention of claim 7, since the connecting hook mechanism is interposed between the connecting frame mechanism portion and the traveling auxiliary mechanism portion, the connecting handle mechanism can be attached / detached by the operation handle provided in the traveling assist mechanism portion. , The traveling assistance mechanism section and the coupling frame mechanism section are engaged and coupled via the coupling hook mechanism, and the traveling assistance mechanism section and the engagement frame mechanism section are provided with a tilting posture during independent traveling and a vertical posture during coupling traveling assistance. It is possible to stabilize and further improve traveling stability and maneuverability. Also, by operating the operation handle, it is possible to easily release the engagement connection state between the traveling assistance mechanism section and the connection frame mechanism section and There is an effect that the work efficiency at the time of connection work with the dolly and separation work can be improved.

  According to the invention of claim 8, the operation assisting mechanism portion is provided with an operation panel surface, and a substantially U-shaped operation handle is projectingly provided on the front portion of the operation panel surface, and the operation panel surface is provided above and laterally of the operation panel surface. A traveling operation handle consisting of a substantially rectangular shaft body is provided so as to surround the operation panel surface over and below, and the lower shaft body of the traveling operation handle is configured to allow traveling adjustment along with the front-back direction operation of the traveling operation handle. Since the operation handle and the traveling operation handle can be grasped by the palm of the operator at the same time to adjust the traveling operation, the operating handle serves as a fulcrum when traveling alone, and the coupled carriage is used as a fulcrum during connection assist traveling. Further, the traveling operation handle can be operated in the front-back direction, and the operability of the device can be improved.

  According to the invention of claim 9, the posture stabilizing plate is disposed on the side of the wheel of the traveling assistance mechanism unit, and the posture stabilizing plate is placed in a state in which the traveling assistance mechanism unit is vertically placed on the ground or floor. Is configured to perform the stabilizer function for the driving assistance mechanism in combination with the grounding state of the power wheels, it is possible to prevent accidental overturn accidents when the road surface changes or the driving direction changes. There is an effect that can be done.

FIG. 4 is an external perspective view showing a state in which the connection frame mechanism section and the engagement frame mechanism section are in the standing posture from the traveling assistance mechanism section in the inclined posture of the traveling assistance device according to the present invention. FIG. 6 is an external perspective view showing a state in which the traveling frame of the traveling assist device according to the present invention is in the inclined posture and the connecting frame mechanism portion and the engagement frame mechanism portion are in the inclined posture. FIG. 3 is an exploded perspective view in which the traveling assistance device according to the present invention is divided into three mechanical units. It is a front view which shows the structure of the driving assistance device which concerns on this invention. It is a right side view which shows the structure of the driving assistance device which concerns on this invention. It is a left side view showing the composition of the run assistant device concerning the present invention. It is a rear view which shows the structure of the traveling assistance apparatus which concerns on this invention. It is a top view showing composition of a travel auxiliary equipment concerning the present invention. It is a rear side perspective view showing the internal structure of the run auxiliary mechanism part concerning the present invention. FIG. 3 is an external perspective view showing a traveling alone state of the traveling auxiliary device according to the present invention. It is a side view which shows the independent travel state of the travel auxiliary equipment which concerns on this invention. It is a typical side view which shows the connection engagement procedure of the traveling assistance apparatus and the trolley | bogie which concern on this invention. It is a typical side view which shows the connection engagement procedure of the traveling assistance apparatus and the trolley | bogie which concern on this invention. It is a typical side view which shows the connection engagement procedure of the traveling assistance apparatus and the trolley | bogie which concern on this invention. It is a typical external appearance perspective view which shows the connection state of the travel assistance apparatus and the trolley | bogie for transportation which concern on this invention. It is a typical partial enlarged view showing a connected state of a travel auxiliary equipment and a trolley for transportation according to the present invention.

  The gist of the present invention is to provide a traveling assist mechanism portion configured to be movable by power, a connecting frame mechanism portion integrally supported by a lower portion of the traveling assist mechanism portion, and a member mounted to the connecting frame mechanism portion so as to be vertically movable. The present invention relates to a traveling auxiliary device for a carrier truck, which comprises a combined frame mechanism section, and further has a lower hook section and an upper hook section projectingly provided on the front surface of the engagement frame mechanism section.

  In addition, the engaging frame mechanism can be moved up and down along a guide lot that is vertically installed at the front of the connecting frame mechanism, and a manual lifting force assist is provided between the engaging frame mechanism and the connecting frame mechanism. It is characterized in that the magnet and the gas spring are provided.

  Further, handles are provided on the left and right sides of the engagement frame mechanism portion, and are used for a manual lifting operation of the engagement frame mechanism portion and a stable grip operation of the engagement frame mechanism portion during traveling by the traveling auxiliary mechanism portion. It has a feature.

  Further, on the front surface of the traveling assist mechanism portion, a frame holding body that is urged forward toward the upper hook portion of the engaging frame mechanism portion is provided so as to project, and a carriage for carrying is provided between the upper hook portion and the frame holding body. It is characterized in that the car frame is configured to be engaged and sandwiched.

  Further, the lower hook part and the upper hook part projectingly provided on the front surface of the engaging frame mechanism part move upward when the engaging frame mechanism part is in surface contact with the car frame of the carriage. The upper and lower hooks are configured not to engage with the car frame, and the upper and lower hooks are configured to engage with the car frame by lowering the engaging frame mechanism. Have.

  Further, the lower end of the connecting frame mechanism part is pivotally connected to the traveling assisting mechanism part at the lower end part, and the traveling assisting mechanism part is configured to be tiltable at a constant angle behind the connecting frame mechanism part around the pivotal supporting part, When the vehicle is traveling alone before being connected to the transportation cart, the driving assistance mechanism is tilted at a certain angle, and the front power wheels and the rear auxiliary casters are grounded to improve running stability. It is characterized in that when the vehicle is assisted in connection with the trolley, the traction assist mechanism and the engaging frame mechanism are in a vertical posture so that only the front power wheel is in the grounded state to improve the maneuverability for the transport trolley.

  Further, it is characterized in that a connecting hook mechanism is interposed between the connecting frame mechanism portion and the traveling auxiliary mechanism portion, and the connecting hook mechanism can be attached and detached by an operation handle provided in the traveling assist mechanism portion.

  Further, an operation panel surface is provided on the traveling assist mechanism, a substantially U-shaped operation handle is provided on the front portion of the operation panel surface, and the operation panel surface is surrounded above, laterally and below the operation panel surface. In this state, a traveling operation handle composed of a substantially rectangular shaft body is provided, and the lower shaft body of the traveling operation handle is configured to allow traveling adjustment along with the front-back direction operation of the traveling operation handle, and further, the steering handle and the traveling operation handle. Is characterized in that the operator's palm can be simultaneously gripped to adjust the traveling operation.

  In addition, a posture stabilizing plate is provided on the side of the wheel of the traveling assistance mechanism section, and when the traveling assistance mechanism section is placed in a vertical posture on the ground or floor, the posture stabilization plate determines that the power wheels are in contact with the ground. It is characterized in that it is configured so as to fulfill the function of a stabilizer for the traveling assist mechanism.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an external perspective view showing a state in which the connecting frame mechanism section and the engaging frame mechanism section are in an upright posture from the traveling assistance mechanism section in the inclined posture of the traveling assistance device, and FIG. 2 is a traveling assistance in the inclined posture of the traveling assistance device. FIG. 3 is an external perspective view showing a state in which the coupling frame mechanism portion and the engagement frame mechanism portion are in an inclined posture together with the mechanism portion, FIG. 3 is an exploded perspective view in which the traveling assistance device is divided into three mechanism portions, and FIG. 4 is a traveling assistance device. FIG. 5 and FIG. 6 are left and right side views showing the configuration of the traveling auxiliary device, FIG. 7 is a rear view showing the configuration of the traveling auxiliary device, and FIG. 8 is a plan view showing the configuration of the traveling auxiliary device. FIG. 9 is a rear perspective view showing the internal structure of the travel assistance mechanism portion of the travel assistance device, FIGS. 10 and 11 are external perspective views and side views showing the travel assistance device in a single traveling state, and FIGS. Engagement frame mechanism of auxiliary device and carriage Schematic side view showing the connecting engagement procedure of the car frame, 15 and 16 are schematic perspective view and a partially enlarged view showing the connection state between the drive assistance device and dolly.

  As shown in FIGS. 1 to 3, a travel assistance device A for a transporting trolley of the present invention generally includes a travel assistance mechanism portion 10 configured to be freely driven by power and a lower portion of the travel assistance mechanism portion 10. It is composed of three mechanical parts, that is, a connecting frame mechanism part 20 which is integrally supported and integrally, and an engaging frame mechanism part 30 which is mounted on the connecting frame mechanism part 20 so as to be able to move up and down.

  Then, as shown in FIGS. 1 to 6, a lower hook portion 31 and an upper hook portion 32 are provided on the front surface of the engaging frame mechanism portion 30 so as to project therefrom, and the upper and lower hook portions 31 and 32 are used to form the upper portion of FIGS. As shown in FIG. 16, it is connected to the rear part of the carriage T to assist traveling from behind by power.

  Hereinafter, the respective structures and operations of the traveling assistance mechanism portion 10, the connection frame mechanism portion 20, and the engagement frame mechanism portion 30, which are the three mechanism portions that constitute the traveling assistance device A according to the present invention, will be described, and then the upper and lower portions. Reference will be made to the driving assistance operation to the carriage T performed via the hook portions 31 and 32.

[1. Driving assistance mechanism section)
As shown in FIG. 1 to FIG. 3 and FIG. 9, the traveling assistance mechanism unit 10 accommodates an electric motor 12 and a battery 13 inside a traveling case 11 having a substantially rectangular shape, and the output shaft of the electric motor 12 is decelerated. It is interlockingly connected with the power wheels 14 and 14 'provided under the traveling case 11 via an interlocking mechanism such as a machine.

  The left and right power wheels 14 and 14 'are interlockingly connected to the electric motor 12 below the traveling case 11 so that the distance between them is narrower than the lateral width of the traveling case 11, as shown in FIGS. ..

  An operation panel surface 15 is formed on the upper surface of the traveling case 11 as shown in FIGS. 8 and 9, and various operating buttons, indicators, and other operating devices 15a necessary for traveling operation are provided.

  Further, as shown in FIGS. 1 to 3, 4, and 7, a substantially inverted U-shaped steering handle 16 is projectingly provided on the traveling case 11 in the front part of the operation panel surface 15, and the operation panel surface 15 A traveling operation handle 17 formed of a substantially rectangular shaft body is provided so as to surround the operation panel surface 15 over the upper side, the lateral side, and the lower side.

  The lower shaft body 17a of the traveling operation handle 17 is configured so that the traveling speed can be adjusted in accordance with the displacement operation of the traveling operation handle 17 in the front-rear direction.

  Specifically, as shown in FIG. 9, the lower shaft body 17a is pivotally connected to the control unit 17b at the center in the longitudinal direction. The control unit 17b is disposed in the central portion of the case 11, and is provided with an operation device 15a provided on the operation panel surface 15, an electric motor 12 for driving the power wheels 14 and 14 ', and power supply to the electric motors 12 and 15a. It is connected to the battery 13.

  With such a configuration, the control unit 17b, which detects the displacement of the traveling operation handle 17 in the front-rear direction as the rotation direction and the rotation distance of the lower shaft 17a, electrically drives a signal corresponding to the displacement of the traveling operation handle 17 in the front-rear direction. The electric motor 12 and the battery 13 which have transmitted the signal to the motor 12 and the battery 13 and have received the same signal enable the traveling speed and driving / stopping of the power wheels 14 and 14 '. A load cell is used as the detection mechanism as the control unit 17b in this embodiment.

  Further, as shown in FIGS. 10 and 11, the distance between the operation handle 16 and the traveling operation handle 17 is such that it can be simultaneously grasped by the palm H of the operator to facilitate the displacement operation of the traveling operation handle 17 in the longitudinal direction. In addition, the operation speed can be adjusted.

  Further, as shown in FIGS. 5 and 6, a posture stabilizing plate 18 having a substantially rectangular shape is formed on the lower edges of both side plates of the traveling case 11 of the traveling assist mechanism 10 so as to cover the left and right sides of the power wheel 14. The plate 18 is extended vertically, and the upper edge of the rear end of the plate 18 is extended rearward to vertically extend the auxiliary caster 19.

  The left and right auxiliary casters 19, 19 ′ are assisted to travel to the floor via the power wheels 14, 14 ′ so that the distance between them is wider than the lateral width of the traveling case 11, as shown in FIGS. 4 and 7. The posture stabilizing plate 18 is provided so as to separate from the floor surface S when the mechanism unit 10 is in the vertical standing posture.

  That is, as shown in FIGS. 10 and 11, the auxiliary casters 19 and 19 ′ are grounded to the floor surface S at a position where the center of gravity of the traveling assist mechanism portion 10 which is a heavy object is most stable together with the power wheels 14 and 14 ′. The traveling assist device A is provided in a rearwardly inclined posture so as to stabilize the inclined posture of the traveling assist device A when traveling alone.

  The lower edge portion of the posture stabilizing plate 18 is configured such that when the traveling assistance mechanism portion 10 is in a vertical posture, the lower edge portion is horizontal and is as close to the ground and floor surface as possible. In the state in which the traveling assistance mechanism 10 is in the vertical posture, that is, in the auxiliary traveling state in which the traveling assistance mechanism 10 is connected to the vertical direction, the posture stabilizing plate 18 is in a substantially grounded state and a stabilizer function for the traveling assistance mechanism 10 is provided. Configured to fulfill.

[2. Connection frame mechanism part)
The connection frame mechanism unit 20 is pivotally supported on the lower portion of the travel assistance mechanism unit 10 and is configured to be integrally connected.

  That is, as shown in FIGS. 5 and 6, the connecting frame mechanism portion 20 includes a base frame 21 having a substantially L-shaped side cross section provided at the lower end, and left and right guide lots 22 and 22 ′ standing on the left and right sides of the base frame 21. And an upper frame 23 having a substantially L-shaped side cross section, which is installed on the upper end portions of the left and right guide lots 22 and 22 'and the engaging rod 41 is horizontally installed on the upper portion.

  Moreover, as shown in FIGS. 5 and 6, the substantially L-shaped rising portion 21a of the base frame 21 and the connecting plate 10a stretched on the lower end portion of the front surface of the case 11 of the travel assistance mechanism portion 10 serve as a pivot support mechanism 24a. Is pivotally connected via a hinge to constitute a pivotal support connecting portion 24, and the pivotal support mechanism 24a tilts the traveling assist mechanism portion 10 at a constant angle during independent traveling before being connected to the carriage T. It can be a posture.

  In addition, above the connecting plate 10a at the lower end of the front surface of the travel assistance mechanism 10, a downwardly open substantially L-shaped restricting portion 10b positions an L-shaped hanging portion in front of the rising portion 21a of the base frame 21. It is protruding.

  With such a configuration, when the connection frame mechanism unit 20 and the engagement frame mechanism unit 30 are tilted from the traveling assist mechanism unit 10 via the pivotal support mechanism 24a, one of the front surfaces of the rising portions 21a of the base frame 21 that has tilted. It is possible to maintain the tilted postures of the connection frame mechanism unit 20 and the engagement frame mechanism unit 30 from the travel assistance mechanism unit 10 at a constant angle by engaging the rear end of the L-shaped hanging portion of the restriction unit 10b with the portion. it can.

  As described above, the lower end of the connecting frame mechanism portion 20 is pivotally connected to the traveling assist mechanism portion 10 at the lower end portion thereof, and the traveling assist mechanism portion 10 is connected to the connecting frame mechanism portion 20 about the pivot support portion 24 as shown in FIG. The vehicle can be tilted at a constant angle in the rear of the vehicle, and as shown in Figs. The auxiliary casters 19 are grounded to improve the traveling stability, and when the traveling assistance of the connection with the transporting carriage T is performed, the traveling assistance mechanism 10 and the engaging frame mechanism 30 are set in the vertical posture to set the forward power. Only the wheels 14 are grounded to improve the maneuverability for the carriage T.

  Further, as shown in FIGS. 4 to 6, an engaging rod 41 is provided on the rear portion of the upper frame 23 of the connecting frame mechanism portion 20, and the engaging rod 41 corresponds to the front surface of the case 11 of the travel assistance mechanism portion 10. A connecting hook mechanism 40 is provided at a position so that the traveling assist mechanism portion 10 and the connecting frame mechanism portion 20 are engaged and connected via the connecting hook mechanism 40. The connecting hook mechanism 40 of this embodiment employs a ratchet mechanism.

  In addition, the connecting hook mechanism 40 is capable of engaging / disengaging operation between the connecting hook mechanism 40 and the engaging rod 41 by the operation handle 42 provided on the operation panel surface 15 of the traveling auxiliary mechanism section 10 as shown in FIGS. 1 to 4. I have to.

  Specifically, the operation handle 42 and the connection hook mechanism 40 are connected to each other via a connection rod that is biased upward in the case 11 by a spring, and the operation handle 42 is pushed downward to operate the connection rod. The connecting hook mechanism 40 and the engaging rod 41 are disengaged via the connecting hook mechanism 40, and the connecting hook mechanism 40 and the engaging rod 41 are engaged with each other by returning the connecting rod upward by the spring bias. There is.

[3. Engaging frame mechanism section]
The engagement frame mechanism portion 30 is mounted on the connection frame mechanism portion 20 so as to be able to move up and down, and as shown in FIGS. 3 and 4, the left and right sides arranged at substantially the same interval as the width of the case 11 of the travel assistance mechanism portion 10. The frame 33, 33 'and three upper, middle, lower erected frames 34, 35, 36 erected therebetween and a substantially triangular contact frame 37 formed at the upper end of the upper erected frame 34 are configured.

  Also, at the lower end positions of the left and right frames 33, 33 ', left and right lower hook portions 31, 31' for engaging with the horizontal frame F as a car frame of the carriage T as shown in FIGS. It is protruding.

  The lower hook portion 31 and the upper hook portion 32 projectingly provided on the front surface of the engagement frame mechanism portion 30 are used when the engagement frame mechanism portion 30 is brought into contact with the car frame F of the carriage T as shown in FIG. The engaging frame mechanism portion 30 is raised so that the upper and lower hook portions 31, 32 are not engaged with the car frame F, and the engaging frame mechanism portion 30 is lowered as shown in FIGS. 13 to 16. When operated, the upper and lower hook portions 31, 32 are configured to engage with the car frame F.

  As shown in FIGS. 1 to 6, guide bushes 38, 38 'that are loosely fitted to the left and right guide lots 22, 22' provided in the connecting frame mechanism section 20 are provided at the lower half positions of the left and right frames 33, 33 '. The engaging frame mechanism portion 30 is vertically guided along the left and right guide lots 22, 22 'through the guide bushes 38, 38' which are loosely fitted in the left and right guide lots 22, 22 '.

  Specifically, the guide bushes 38, 38 ′ are provided on the left and right upper and lower sides inside the left and right frames 33, 33 ′ near both ends of the middle erection frame 35 and the lower erection frame 36, and on the left and right guide lots 22, 22 of the connecting frame mechanism section 20. 'Is provided in the state of loose fitting.

  Further, as shown in FIGS. 1 and 3, a bracket plate 35a is provided on the middle erected frame 35 so as to project rearward, and the upper frame 23 of the connecting frame mechanism section 20 is attached to the upper surface of the bracket plate 35a. Two magnets 50 are provided at positions corresponding to the magnetic lower surface.

  The magnet 50 has a function of adsorbing and fixing when the engaging frame mechanism portion 30 is temporarily lifted and fixed along the connecting frame mechanism portion 20 in order to connect the engaging frame mechanism portion 30 to the frame F of the carriage T.

  In addition, as shown in FIGS. 1, 2, 5, and 6, a bracket plate 34 a protruding from the upper surface of the upper frame 23 of the connecting frame mechanism portion 20 and the rear edge of the upper frame 34 of the engaging frame mechanism portion 30. A gas spring 51 is provided between them.

  Due to the function of the gas spring 51, the engaging frame mechanism section 30 is manually lifted once in order to connect the engaging frame mechanism section 30 to the frame F of the carriage T. A biasing force can be applied.

  Further, as shown in FIGS. 1 to 4, the substantially triangular contact frame 37 formed on the upper end of the engaging frame mechanism unit 30 holds the left and right triangular inclined frames 37a, 37a 'and the upper end thereof at a constant interval. The left and right adjustment frames 37b and 37b 'are raised, and as shown in FIGS. 5 and 6, the left and right adjustment frames 37b and 37b' are provided with a large number of horizontal grooves 37c vertically. The abutment bracket 32a is engageable with the lateral groove 37c so that the vertical position can be adjusted to form the lower open L-shaped upper hook portion 32.

  Moreover, the contact bracket 32a is disposed at a position facing the frame sandwiching body 60 projecting on the front surface of the traveling auxiliary mechanism portion 10 with the contact surface being hung downward, and is connected to the transport carriage T. At this time, the rear frame F of the carriage T is clamped and fixed between the contact bracket 32a and the frame clamp 60.

  As shown in FIGS. 1, 8, and 14 to 16, the frame holding body 60 is attached to the front surface of the case of the travel assistance mechanism section 10 via a bracket 61 for height position adjustment, and has a contact plate 62 at its tip. It comprises an advancing / retreating rod 63 provided with a coil spring 64 mounted around the advancing / retreating rod 63, and the coil spring 64 always contacts the contact plate 62 when the advancing / retreating rod 63 is biased in the forward direction to be connected with the carriage T. The rear frame F of the carriage T is sandwiched and fixed between the rear frame F and the contact bracket 32a.

  The frame holding body 60 is moved by the height adjusting bracket 61 so that the frame holding body 60 has a height corresponding to the vertical position of the contact bracket 32a of the car frame F and the upper hook portion 32 of the engaging frame mechanism portion 30. It is attached to the upper part of the front of the case 11 of 10.

  Further, left and right handles 39, 39 ′ are provided on the upper left and right sides of the engaging frame mechanism section 30 so as to project outward, so that the engaging frame mechanism section 30 can be manually moved up and down and the traveling assist mechanism section 10 can be used for traveling. It is used for a stable gripping operation of the engagement frame mechanism section 30.

[4. Driving assistance operation of the carriage for transportation)
The travel assistance device A configured as described above performs the travel assistance operation of the carriage T via the upper and lower hook portions 31 and 32 in the following manner.

  As shown in FIG. 2, FIG. 10 and FIG. 11, the traveling assistance device A has the traveling assistance mechanism portion 10 fixed together with the coupling frame mechanism portion 20 and the engagement frame mechanism portion 30 before being coupled to the carriage T. The vehicle is tilted backward at an angle, and the front power wheel 14 and the rear auxiliary caster 19 are in a grounded state on the floor surface S so that the vehicle can be independently run in a stable and easy operation state.

  By positioning the traveling auxiliary device A in such a stable traveling state in the vicinity of the rear side of the car frame F of the carrying cart T to be coupled, as shown in FIG. 20 and the engaging frame mechanism portion 30 are brought into a vertical posture through the pivotal support portion 24.

  Specifically, the operation handle 42 on the operation panel surface 15 of the travel assistance mechanism unit 10 is pushed down to release the connecting hook mechanism 40 interposed between the travel assistance mechanism unit 10 and the engagement frame mechanism unit 30. Then, the engaging frame mechanism unit 30 and the connecting frame mechanism unit 20 are erected so as to be in a vertical posture from the traveling assist mechanism unit 10 in the tilted posture via the pivot support connecting portion 24 at the lower end. In this way, the front surface of the engaging frame mechanism portion 30 and the rear surface of the car frame F of the carriage T are in a state of being face-to-face.

  In this way, while maintaining the vertical posture state of the coupling frame mechanism portion 20 and the engagement frame mechanism portion 30, the traveling assist device A in the inclined posture is advanced to convey the engagement frame mechanism portion 30 as shown in FIG. The car frame F of the cart T is brought into surface contact with the car frame F.

  In the surface contact state between the engagement frame mechanism portion 30 and the car frame F, the engagement frame mechanism portion 30 is attracted and fixed to the magnet 50 provided on the bracket plate 35a of the connection frame mechanism portion 20, as shown in FIG. Thus, the upper and lower hook portions 31 and 32 of the engaging frame mechanism portion 30 are not engaged with the car frame F.

  Then, when the handle 39, 39 'provided on the left and right sides of the engaging frame mechanism unit 30 is operated to lower the engaging frame mechanism unit 30 along the guide lot that is suspended from the front portion of the connecting frame mechanism unit 20, As shown in FIG. 13, the upper and lower hook portions 31 and 32 projecting from the front surface of the engaging frame mechanism portion 30 are provided at predetermined intervals in the car frame F, that is, in a substantially lattice-like frame that is erected on the three side edges of the luggage holder. A plurality of vertical frames that are erected at a distance from each other are brought down from above the horizontal frame portion of the horizontal frame portion to engage with the car frame F.

  Next, as shown in FIG. 14, the traveling assist mechanism 10 in the tilted posture is centered around the pivot support 24 with respect to the engagement frame mechanism 30 in the vertical posture engaged with the car frame F of the carriage T. As a result, the traveling assist mechanism portion 10 is in a vertical posture in which the front surface is in contact with the rear surface of the engagement frame mechanism portion 30.

  In this way, when the traveling assistance mechanism portion 10 is engaged and fixed to the engagement frame mechanism portion 30 via the connecting hook mechanism, it is provided on the front surface of the traveling assistance mechanism portion 10 as shown in FIGS. 15 and 16. The frame clamping body 60 clamps and fixes the rear frame F of the transportation cart between the frame hooking body 60 and the upper hook portion 32 (contact bracket 32a) of the engaging frame mechanism portion 30.

  In the vertical posture state of the traveling assistance mechanism unit 10, as shown in FIG. 14, in the traveling assistance device A, the rear auxiliary caster 19 is separated from the floor surface to be in a non-grounded state, and therefore only the front power wheel 14 is provided. The grounded state improves the maneuvering operability for the carriage for assisting the connected traveling.

  In this way, the connection work between the travel assistance device A and the carriage T is completed.

  Then, the operator grips the traveling operation handle 17 of the traveling assistance mechanism unit 10 with respect to the carriage T connected to the traveling assistance device A, operates the operation panel surface 15, and drives the power wheels 14 to move forward and backward. As a result, the travel assist device A is operated to move forward and backward, and the travel carriage T is assisted to travel to a desired transport position.

  Here, at the time of such assisted connection traveling, the engagement position between the upper and lower hook portions 31 and 32 of the engagement frame mechanism portion 30 and the car frame F along with the change of the traveling road surface and the traveling form is front, rear, left and right with respect to the traveling direction. Since there is a possibility that the engagement and connection state between the travel assistance device A and the carriage T may be inadvertently released by shifting in the vertical direction, the frame holding body shown in FIGS. 1 to 4, 15 and 16. An impact buffering means for alleviating various impacts of the connecting portion via members such as 60 and the gas spring 51 is used.

  That is, the frame holding body 60 on the front surface of the travel assistance mechanism unit 10 that holds the rear frame F of the carriage T with the upper hook portion 32 of the engagement frame mechanism unit 30, and the coupling frame mechanism unit 20 and the engagement frame. The gas spring 51 and the like interposed between the mechanical portion 30 and the connecting portion performs a shock absorber function corresponding to the front-rear, left-right, and up-down directions in the connecting portion, and escapes the eccentric load in the engaging portion between the travel auxiliary device A and the carriage T. It is possible to maintain the connection function reliably.

  Specifically, in the engaged and connected state of the carriage T and the travel assistance device A, the frame holding body 60 on the front surface of the travel assistance mechanism portion 10 engages with the connection frame mechanism portion 20 against the displacement in the front-rear direction. When the gas spring 51 between the frame mechanism portion 30 and the frame mechanism portion 30 is displaced in the vertical direction, and when the frame holding body 60 and the gas spring 51 are displaced in the horizontal direction, the traveling assist device A is attached to the carriage T. The travel assist mechanism portion 10 and the engagement frame mechanism portion 30 are displaced to the normal posture so as to follow.

  As described above, the traveling assistance device A can easily loosen or release the coupling of the coupling mechanism with the transporting carriage T through the shock absorbing means such as the gas spring 51 and the frame holding body 60 even if the traveling road surface or the traveling form changes. It is possible to fully secure the safety of auxiliary driving without being squeezed.

  Then, when carrying out the separation work of the transporting trolley T and the traveling auxiliary device A which are disconnected after the predetermined transportation is completed, the above-described coupling work procedure is performed in reverse.

  That is, the connecting handle mechanism on the operation panel surface 15 is used to release the hook mechanism 40 for connecting the traveling assistance mechanism portion 10 and the engagement frame mechanism portion 30, and the traveling assistance mechanism portion 10 is moved backward from the engagement frame mechanism portion 30. While tilting to the side to assume a tilted posture, the upper hook portion 32 and the frame holding body 60 are released from the holding and fixing state to release the connection with the car frame F of the carriage T.

  Next, the engaging frame mechanism section 30 is lifted up along the guide rods 22 and 22 ′ of the connecting frame mechanism section 20 via the handle 39, and the car frame F and the upper and lower hook sections 31 of the engaging frame mechanism section 30 are The engagement with 32 is released. When the engagement is released, the ascending operation can be assisted by using the ascending urging function of the gas spring 51 and the magnet 50 with as little ascending operation force.

  As described above, according to the present invention, the engaging frame mechanism portion and the connecting frame mechanism portion are configured to be vertically movable in the vertical and forward / backward directions with respect to the traveling assistance mechanism portion. At the time of connecting work to the car, it is possible to easily engage only the engaging frame mechanism part with the car frame of the carriage, without lifting the traveling aid mechanism part that is a heavy object, and the traveling assist mechanism part accidentally falls. This has the effect of preventing accidents that may injure the worker or damage the traveling assist device itself.

  That is, the posture of the engagement frame mechanism unit is tilted so that the engagement frame mechanism unit is tilted from the travel assistance mechanism unit and the engagement frame mechanism unit is vertically expanded and contracted from the connection frame mechanism unit so that the upper and lower hooks engage with the car frame. Displacement can be freely performed, and even if there is a difference in the frame shape and dimensions of the transportation trolley, it can be securely connected to any transportation trolley with one touch, and even if the traveling road surface or running form changes. There is an effect that the driving mechanism can be sufficiently secured without the coupling mechanism being easily released.

A travel assist device T transport carriage F car frame 10 travel assist mechanism part 10a connecting plate 11 travel case 12 electric motor 13 battery 14 power wheel 15 operation panel surface 15a operation device 16 operation handle 17 travel operation handle 17a lower shaft 18 posture stabilization Plate 19 Auxiliary caster 20 Connection frame mechanism 21 Base frames 22, 22 'Left and right guide lot 23 Upper frame 24 Pivot connection 24a Pivot mechanism 30 Engagement frame mechanism 31 Lower hook 32 Upper hook 32a Abutment bracket 33 , 33 'Left and right frames 34 Upper erection frame 35 Middle erection frame 36 Lower erection frame 37 Abutment frames 37a, 37a' Triangular inclined frames 37b, 37b 'Left and right adjustment frames 37c Lateral groove 38 Guide bush 39 Handle 40 Connecting hook mechanism 41 Engagement Head 42 operating handle 50 magnet 51 gas spring 60 frame holding member 61 bracket 62 abutting plate 63 reciprocating rod 64 a coil spring

Claims (9)

A travel assistance mechanism part configured to run freely by power,
A connecting frame mechanism part pivotally supporting the lower part to the traveling assist mechanism part and integrally configured,
It consists of an engaging frame mechanism that is attached to the connecting frame mechanism so that it can move up and down.
In addition, the traveling assist device for a carrier truck is characterized in that a lower hook portion and an upper hook portion are provided on the front surface of the engaging frame mechanism portion, respectively.   The engaging frame mechanism can be moved up and down along a guide lot that is vertically installed at the front of the connecting frame mechanism, and a magnet for assisting the lifting force manually is provided between the engaging frame mechanism and the connecting frame mechanism. The transport assist device for a carrier truck according to claim 1, further comprising: a gas spring and a gas spring.   Handles are provided on the left and right sides of the engaging frame mechanism section so that they can be used for manual lifting operation of the engaging frame mechanism section and stable gripping operation of the engaging frame mechanism section during traveling by the travel assistance mechanism section. The travel assistance device for a carrier truck according to claim 1 or 2.   On the front surface of the traveling assistance mechanism part, a frame holding body which is urged forward toward the upper hook part of the engaging frame mechanism part is provided so as to project, and a basket of a carriage is provided between the upper hook part and the frame holding body. The travel assistance device for a carrier truck according to any one of claims 1 to 3, wherein the frame is configured to be engaged and held.   The lower hook portion and the upper hook portion projecting from the front surface of the engaging frame mechanism portion are lifted when the engaging frame mechanism portion is in surface contact with the car frame of the carriage. The upper and lower hook portions are configured not to engage with the car frame, and the upper and lower hook portions are configured to engage with the car frame by lowering the engaging frame mechanism portion. The traveling assistance device for a carrier truck according to any one of claims 1 to 4.   The lower end of the connecting frame mechanism part is pivotally connected to the traveling assist mechanism part at the lower end part, and the traveling assist mechanism part is configured to be tiltable at a fixed angle behind the connecting frame mechanism part around the pivot support part for transportation. When the vehicle is traveling alone before being connected to the bogie, the traveling assist mechanism is tilted at a certain angle so that the front power wheels and the rear auxiliary casters are in the grounded state to improve traveling stability. The auxiliary driving mechanism is configured to be in a vertical posture together with the engaging frame mechanism so that only the front power wheel is in a grounded state to improve maneuvering operability with respect to the transportation carriage when the connected traveling assistance of FIG. 5. A travel assistance device for a carrier truck according to any one of 5 above.   The attachment / detachment operation of the connection hook mechanism can be performed by an operation handle provided on the travel assistance mechanism portion with a connection hook mechanism interposed between the connection frame mechanism portion and the travel assistance mechanism portion. 7. A travel assistance device for a carrier truck according to any one of 6 above. A state in which an operation panel surface is provided on the traveling auxiliary mechanism section, a substantially U-shaped operation handle is projectingly provided on the front portion of the operation panel surface, and the operation panel surface is surrounded above, laterally, and below the operation panel surface. With a traveling operation handle consisting of a substantially rectangular shaft body, the lower shaft body of the traveling operation handle is configured to allow traveling adjustment in accordance with the front-back direction operation of the traveling operation handle,
In addition, the steering handle and the traveling operation handle are gripped by the palm of the operator at the same time so that the traveling operation can be adjusted, and the traveling assistance of the transportation cart according to any one of claims 1 to 7. apparatus.   A posture stabilizing plate is installed on the side of the wheel of the traveling assistance mechanism, and the posture stabilizing plate works together with the grounding state of the power wheels when the traveling assistance mechanism is placed vertically on the ground or floor. 9. The travel assistance device for a carrier truck according to claim 1, wherein the travel assistance device is configured to perform a stabilizer function with respect to the travel assistance mechanism portion.

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