JP2015205557A - Carrier machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carrier machine which can clamp an installation part to a transport object only by relatively lifting up and down the installation part to the transport object.SOLUTION: A carrier machine 10 comprises: an installation arm 17 rotatably (can be opened and closed freely) to a unit frame 15 and being installed to a bed; and a drive wheel 28 rotatably attached to a unit frame 26. The installation arm 17 comprises: a base 20; and an arm body 21 mounted on the base 20. The arm body 21 has a clamp mechanism 22 for clamping the installation arm 17 to the bed. The clamp mechanism 22 comprises: a front side block 23 having a cross section of L-shape for mounting and holding a front part installation bar of the bed; a rear side block 24 having a cross section of C-shape for sandwiching and holding a rear part installation bar of an attachment; and a link mechanism 25 for connecting the front side block 23 and the rear side block 24.

Description

  The present invention relates to a transport machine used in a transport assist device that assists transport of a transport target.

  As a conventional conveyance machine for a conveyance auxiliary device, there is a traveling cart as described in Patent Document 1, for example. The traveling carriage described in Patent Document 1 includes a carriage main body, drive wheels attached to the lower side of the carriage main body, and an engagement member that is provided on the carriage main body and attaches the traveling carriage to the bed. Yes. When the traveling carriage is mounted on the bed, the engaging member is engaged with the bed body by operating the bed height adjusting mechanism with the operating device provided on the bed and lowering the bed body.

JP 2014-8135 A

  In the above-described conventional technology, the engagement member (mounting portion) is engaged with the bed body, so that the traveling carriage is mounted on the bed. However, in order to easily and reliably attach the traveling carriage to the bed, it is desirable that the engagement member can be clamped to the bed only by raising and lowering the engagement member relative to the bed.

  The objective of this invention is providing the conveying machine which can clamp a mounting part to a conveyance target object only by raising / lowering a mounting part relatively with respect to a conveyance target object.

  The present invention relates to a transport device for a transport assisting device that assists transport of a transport target having two attachment portions, a main body portion, a drive wheel that is rotatably attached to a lower end portion of the main body portion, and a main body portion. A mounting portion attached to the object to be transported, the mounting portion being disposed on the base, a first engagement member that is disposed on the base and engages with one of the two mounting portions, and an upper portion of the base. The second engagement member is disposed on the opposite side of the main body portion with respect to the first engagement member, and engages with the other of the two attachment portions, and the first engagement member and the second engagement member are connected to the mounting portion. And an elastic member that biases upward, and at least one of the first engagement member and the second engagement member has a shape that holds and holds the attachment portion. is there.

  When mounting such a transport device of the present invention on a transport target, the mounting portion is raised relative to the transport target. Then, one attachment part of a conveyance target object engages with a 1st engagement member, and the other attachment part of a conveyance target object engages with a 2nd engagement member. At this time, the first engagement member and the second engagement member are pressed by the one attachment portion and the other attachment portion, respectively, against the urging force of the elastic member, and the first engagement member and the second engagement member At least one of them holds the corresponding mounting portion. In this way, the mounting part can be clamped to the transport object only by moving the mounting part up and down relatively with respect to the transport object.

  The first engagement member may have a shape that holds and holds one attachment portion, and the second engagement member may have a shape that holds the other attachment portion. The first engagement member and the second engagement member have different rotational moments with respect to the drive wheels. For this reason, whether the transport object is moved forward or backward, only the downward load is applied to the first engagement member, but the load in both the upper and lower directions depends on the traveling direction of the transport object. Will be added. Therefore, it is effective to make the shape of the second engaging member so as to hold it with the attachment portion interposed therebetween. In addition, since the first engagement member simply holds the mounting portion, it can absorb variations in the distance between the two mounting portions (the pitch of the two mounting portions).

  The mounting portion may further include a link mechanism that connects the first engagement member and the second engagement member. In this case, when the mounting portion is raised relative to the object to be transported, one attachment portion pushes the first engagement member, so that the second engagement member moves the other attachment portion by the link mechanism. It comes to hold between. Therefore, the mounting portion can be easily and reliably clamped to the conveyance object. Moreover, the elastic member which urges | biases the 1st engaging member and the said 2nd engaging member can be shared by one component.

  The link mechanism includes a first link member fixed to the first engagement member, a second link member fixed to the second engagement member, and a third link member connecting the first link member and the second link member. The first link member and the third link member are rotatably attached to the base via the first rotation shaft, and the second link member and the third link member are mutually connected. It is good to be connected so that rotation is possible, and the 2nd engagement member is attached to the base via the 2nd rotation axis so that rotation is possible. In this case, when the first engagement member is pushed by one of the attachment portions, the second engagement member rotates via the three link members and holds the other attachment portion. Therefore, since the attachment portion can easily enter the second engagement member, the variation in pitch between the two attachment portions can be sufficiently absorbed.

  The elastic member may be disposed between the base and the second link member. In this case, the elastic member can be easily assembled to the mounting portion.

  According to the present invention, the mounting part can be clamped to the transport object only by moving the mounting part up and down relatively with respect to the transport object.

It is a perspective view which shows the use condition of the conveyance auxiliary | assistance apparatus provided with one Embodiment of the conveying machine which concerns on this invention. It is a perspective view which shows the attachment provided in the bed main body shown in FIG. It is a perspective view which shows the external appearance of the operating device shown in FIG. It is a perspective view which shows the inside of the operating device shown in FIG. FIG. 4 is a perspective view showing a state in which the mounting arm shown in FIG. 3 is open. FIG. 6 is a plan view of the arm body shown in FIG. 5. It is a side view which shows the structure and operation | movement of a clamp mechanism shown in FIG. It is a side view which shows the structure and operation | movement of the modification of the clamp mechanism shown in FIG.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a conveyor according to the invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view illustrating a usage state of a conveyance auxiliary device including an embodiment of a conveyance device according to the present invention. In the figure, a transport assisting device 1 is used when a nurse N transports a bed 2 and assists in transporting the bed 2.

  The bed 2 includes a bed body 3 and a support body 4 that supports the bed body 3. The support 4 is provided with four casters 4a. A mattress 5 is placed on the bed body 3. Bed boards 3 a are erected on both ends of the bed body 3. As shown in FIG. 2, an attachment 6 is provided at a lower portion on one end side of the bed main body 3. The attachment 6 includes a frame 7 and a columnar front mounting bar (mounting portion) 8 and a rear mounting bar (mounting portion) 9 that are supported by the frame 7 and extend in the width direction of the bed 2.

  The conveyance auxiliary device 1 includes a conveyance device 10 according to the present embodiment that is attached to one end portion of the bed 2 and an operating device 11 that is attached to the other end portion of the bed 2. The operating device 11 is mounted in a clamped state on the bed board 3a. The operation device 11 is a device for the nurse N to perform operations related to the operation of the transport device 10. Although not specifically illustrated, the controller 11 has a controller, various switches, and various sensors.

  As shown in FIGS. 3 and 4, the transporter 10 includes a main body unit 12, a drive unit 13, and an elevating cylinder 14 connected to the main body unit 12 and the drive unit 13. The elevating cylinder 14 is an electric cylinder that elevates and lowers the main unit 12 with respect to the drive unit 13. FIG. 3 shows the appearance of the conveyor 10, and FIG. 4 shows the inside of the conveyor 10.

  The main unit 12 includes a unit frame 15 that extends in the vertical direction of the transporter 10, a pair of casters 16 that are rotatably attached to the lower end of the unit frame 15, and the rear side of the transporter 10 on the unit frame 15. Attached to the bed main body 3 of the bed 2 and attached to the bed main body 3, an exterior cover 18 covering the unit frame 15, and a lower side of the exterior cover 18. The cover bumper 19 is disposed.

  In addition, various switches including a lift switch and a controller are provided on the upper portion of the main unit 12, although not particularly illustrated. The elevating switch is a switch for instructing the elevating operation of the main unit 12 with respect to the drive unit 13.

  The mounting arm 17 has a base 20 and an arm main body 21 placed on the base 20. In a state where the mounting arm 17 is closed (in a standing state), the base 20 functions as a part of the exterior cover 18.

  As shown in FIGS. 5 and 6, the arm main body 21 has a base portion 21a and a pair of arm portions 21b integrated with the base portion 21a. Each arm portion 21b is configured to extend to the rear side of the transporting machine 10 in a state where the mounting arm 17 is opened (a state where the mounting arm 17 is tilted sideways). Rotating shafts 40 are provided on both sides of the base 21a. The mounting arm 17 is supported by the unit frame 15 so as to be rotatable (openable and closable) via each rotation shaft 40.

  Further, as shown in FIG. 6, the mounting arm 17 has a lock mechanism 41 that locks against the unit frame 15 so as to maintain the mounting arm 17 in a horizontal state when the mounting arm 17 is opened. . The lock mechanism 41 has a pair of lock pins 42 provided on the front side of the rotation shaft 40 on both sides of the base portion 21a. The mounting arm 17 is locked to the unit frame 15 by inserting each lock pin 42 into the hole 43 formed in the unit frame 15.

  The lock mechanism 41 further includes a pair of link mechanisms 44 provided in the base portion 21 a and connected to the lock pins 42. Each link mechanism 44 is connected to an unlocking member 46 for unlocking the mounting arm 17 with respect to the unit frame 15. The unlocking member 46 is disposed so as to extend parallel to the arm portion 21b between the arm portions 21b.

  A flange portion 46 a is provided on the proximal end side of the unlocking member 46. Between the base portion 21a and the flange portion 46a, a spring 45 that urges each lock pin 42 in a direction in which the lock pin 42 is inserted into the hole portion 43 of the unit frame 15 is disposed.

  The link mechanism 44 includes a crank member 47, a link member 48, a link member 49, an L-shaped link member 50, and a link member 51 from the lock pin 42 side toward the lock release member 46 side.

  The crank member 47 is rotatably attached to the base portion 21a via a rotation shaft 52. One end of the crank member 47 is fixed to the lock pin 42, and the other end of the crank member 47 is fixed to the link member 48. The link members 48 and 49 are connected to each other so as to be rotatable. The L-shaped link member 50 is rotatably attached to the base portion 21a via a rotation shaft 53. The link members 49 and 50 are connected to each other so as to be rotatable. The link members 50 and 51 are connected to each other so as to be rotatable. The link member 51 is fixed to the proximal end portion of the lock release member 46.

  When the mounting arm 17 is opened 90 degrees from the closed state, each locking pin 42 enters the hole 43 of the unit frame 15 through the link mechanism 44 by the biasing force of the spring 45, so that the mounting arm 17 is locked. .

  In this state, when the lock release member 46 is pushed against the urging force of the spring 45, the L-type link member 50 is rotated in the direction of arrow A via the link member 51, and accordingly, the link members 49, 48 are linked. When the crank member 47 rotates in the direction of arrow B through the lock pin 42, the lock pin 42 comes out of the hole 43 and is drawn into the base 21 a. Thereby, the lock of the mounting arm 17 with respect to the unit frame 15 is released, so that the mounting arm 17 can be closed.

  As shown in FIGS. 5 to 7, each arm portion 21 b of the arm body 21 is provided with a clamp mechanism 22 for clamping the mounting arm 17 to the attachment 6 of the bed 2. The clamp mechanism 22 has an L-shaped front block (first engagement member) 23 that engages with the front mounting bar 8 of the attachment 6 and a C-shaped cross section that engages with the rear mounting bar 9 of the attachment 6. A rear block (second engagement member) 24 and a link mechanism 25 that connects the front block 23 and the rear block 24 are provided.

  The front block 23 has a structure in which a wall portion projects from the rear end side, and is configured to place and hold the front mounting bar 8. The rear block 24 has a shape opened to the rear side, and is configured to hold the rear mounting bar 9 therebetween. Further, the rear block 24 is rotatably attached to the arm portion 21b via a rotation shaft (second rotation shaft) 54.

  The link mechanism 25 has a link member (first link member) 55, a link member (third link member) 56, and a link member (second link member) 57 from the front block 23 side toward the rear block 24 side. doing. The link member 55 is fixed to the front block 23. The link member 57 is fixed to the rear block 24. The link member 56 connects the link member 55 and the link member 57.

  The link members 55 and 56 are rotatably attached to the arm portion 21b via a rotation shaft (first rotation shaft) 58. The link members 56 and 57 are connected to each other so as to be rotatable. The link members 56 and 57 are formed with holes 56a and 57a through which the pins 62 pass, respectively. The hole 56a formed in the link member 56 has a long hole shape. Therefore, the link member 57 rotates with respect to the link member 56 so as to be movable along the longitudinal direction of the hole portion 56a. That is, the link members 55 and 56 rotate together around the rotation shaft 58 without changing their relative positions, and the link members 56 and 57 rotate while their relative positions change.

  A spring (elastic member) 59 for urging the front block 23 and the rear block 24 upward is disposed between the distal end portion of the arm portion 21b and the link member 57 (see FIG. 7). Due to the urging force of the spring 59, the link member 56 is in a state of extending straight in the front-rear direction in the base portion 21a, and the front block 23 and the rear block 24 are in a state of being raised through the link members 55 and 57, respectively. At this time, the opening of the rear block 24 faces obliquely rearward and upward. In addition, as an arrangement | positioning location of the spring 59, it may be between the front-end | tip part of the arm part 21b and the link member 56, for example, and is not restricted especially in the above.

  A front window portion 60 is formed on the upper wall portion of the arm portion 21b so that the front block 23 is pulled out from the arm portion 21b to the upper side of the arm portion 21b through the link member 55 by the biasing force of the spring 59. (See FIG. 6). The fixing portion of the rear block 24 in the link member 57 is fixed to the arm portion 21b from the inside of the arm portion 21b by the urging force of the spring 59 on the distal end side of the arm portion 21b than the front window portion 60 in the upper wall portion of the arm portion 21b. A rear window portion 61 is formed so that the connecting portion of the link members 56 and 57 is pulled out from the arm portion 21b to the upper portion of the arm portion 21b against the urging force of the spring 59. (See FIG. 6).

  In such a clamp mechanism 22, when the mounting arm 17 is raised with respect to the bed 2, the front mounting bar 8 is moved to the front block 23 by a load from above the mounting arm 17 as shown in FIG. With this contact, the link mechanism 25 operates, and the mounting arm 17 clamps the attachment 6 of the bed 2.

  Specifically, as shown in FIG. 7B, first, the front block 23 is pushed against the urging force of the spring 59. Then, the link members 55 and 56 rotate counterclockwise about the rotation shaft 58, and the front block 23 is lowered (see arrow P). Then, the link member 57 is pulled upward, and accordingly, the rear block 24 holds the rear mounting bar 9 while sandwiching the rear mounting bar 9 while rotating clockwise about the rotation shaft 54 (see arrow Q). As a result, the attachment 6 is clamped to the mounting arm 17.

  Here, since the shape of the front block 23 is L-shaped in cross section, it is possible to absorb the allowable variation in pitch between the front mounting bar 8 and the rear mounting bar 9. Further, when the front block 23 is pushed by the front mounting bar 8 by raising the mounting arm 17, the rear block 24 is rotated via the link mechanism 25 to hold the rear mounting bar 9, so that the rear mounting The bar 9 can easily enter the rear block 24. Thereby, the allowable variation in pitch between the front mounting bar 8 and the rear mounting bar 9 can be further absorbed.

  Returning to FIG. 4, the drive unit 13 is disposed in the lower portion of the transport machine 10. The drive unit 13 includes a unit frame 26, a rotating body 27 that is rotatably attached to the unit frame 26, one drive wheel 28 that is rotatably attached to the lower end of the rotating body 27, and a rotating body. 27, a drive motor 29 that rotates the drive wheel 28, a steering motor 30 that is attached to the unit frame 26 and turns the drive wheel 28 by rotating the rotary body 27, and the rotary body 27. And a lower cover 31 disposed on the lower side. The lower cover 31 is attached to the unit frame 26 via a bracket 26a.

  The unit frame 15 and the unit frame 26 constitute a main body. In the clamp mechanism 22, the rear block 24 is disposed on the opposite side of the unit frame 15 with respect to the front block 23.

  Two springs 33 are arranged between the elevating cylinder 14 and the unit frame 26 of the drive unit 13. That is, the elevating cylinder 14 and the unit frame 26 are connected via the two springs 33.

  In the transport machine 10 configured as described above, the driving wheel 28 is normally in a state of floating from the ground by a predetermined amount (for example, about 10 mm). Therefore, when the transporter 10 is moved alone, only the caster 16 is allowed to travel.

  When the transporter 10 is mounted on the bed 2, the mounting arm 17 is first opened (see FIGS. 3 to 5). In this state, the conveyor 10 is moved until it comes into contact with the bed 2, and the mounting arm 17 is positioned below the attachment 6 of the bed 2.

  Next, an elevating switch (not shown) is turned on to operate the elevating cylinder 14 to raise the main body unit 12 relative to the drive unit 13. Then, first, the drive unit 13 is lowered and the drive wheels 28 come into contact with the ground.

  After the drive wheel 28 comes into contact with the ground, the main unit 12 is raised, and the mounting arm 17 is raised accordingly. Thereby, the caster 16 will be in the state which floated from the ground (refer FIG. 1). Then, the front block 23 and the rear block 24 provided on the arm main body 21 of the mounting arm 17 abut on the front mounting bar 8 and the rear mounting bar 9 of the attachment 6, so that the attachment 6 contacts the mounting arm 17 as described above. It will be clamped.

  Then, the weight of the bed 2 overcomes the spring force of the spring 33, and the elevating cylinder 14 presses the spring 33, and the spring 33 contracts. When the contraction amount of the spring 33 reaches a predetermined value, the operation of the elevating cylinder 14 is stopped, and the relative rise of the main body unit 12 with respect to the drive unit 13 is stopped. As a result, an appropriate load (for example, about 60 kg) that does not generate a slip when the drive wheel 28 travels can be applied to the drive wheel 28. Thus, the mounting of the transporter 10 to the bed 2 is completed (see FIG. 1).

  Thereafter, the operating device 11 is mounted on the bed board 3 a on the opposite side of the bed 2 from the transport device 10. Thereby, the bed 2 can be transported by the transport assisting device 1.

  As described above, in the present embodiment, the front block 23 having an L-shaped cross section that holds the front mounting bar 8 of the attachment 6 and the C mounting cross section that holds the rear mounting bar 9 between the attachment 6 and the rear mounting bar 9. Since the clamping mechanism 22 having the rear block 24 of the mold and the link mechanism 25 for connecting the front block 23 and the rear block 24 is provided in the mounting arm 17, as described above, the mounting arm 17 is simply raised. The mounting arm 17 can be easily clamped to the attachment 6. This makes it possible to easily and reliably attach the transporter 10 to the bed 2.

  Further, since the rear block 24 is arranged on the opposite side of the unit frame 15 with respect to the front block 23, the rotational moment with respect to the drive wheels 28 is larger than that of the front block 23. For this reason, only a downward load is applied to the front block 23 regardless of whether the bed 2 is conveyed forward or backward. However, when the bed 2 is transported forward, a downward load is applied to the rear block 24, and when the bed 2 is transported rearward, an upward load is applied to the rear block 24. On the other hand, in the present embodiment, the rear block 24 has a C-shaped cross section and the rear block 24 holds the rear mounting bar 9 so that the rear block 24 is mounted regardless of the transport direction of the bed 2. The arm 17 can be stably clamped to the attachment 6.

  The present invention is not limited to the above embodiment. For example, in the above-described embodiment, the clamp mechanism 22 provided on the mounting arm 17 has the link mechanism 25 that connects the front block 23 and the rear block 24. It is not limited to that.

  FIG. 8 is a view showing a modification of the clamp mechanism 22 shown in FIG. In FIG. 8A, the clamp mechanism 22 has a support member 70 fixed to the front block 23. The support member 70 is cantilevered so as to be pivotable via a pivot shaft 71 on the top end (rear end) of the arm portion 21b. A spring (elastic member) 72 that biases the front block 23 upward is disposed between the support member 70 and the arm portion 21b. The rear block 24 is rotatably attached to the arm portion 21b via a rotation shaft 73. Between the rear block 24 and the arm portion 21b, a spring (elastic member) 74 that urges the rear block 24 to rotate upward is disposed.

  When the mounting arm 17 is raised with respect to the bed 2, the front mounting bar 8 comes into contact with the front block 23, and the front block 23 is pushed against the urging force of the spring 72. As shown in FIG. 3, the front block 23 is lowered as the support member 70 rotates about the rotation shaft 71. When the rear mounting bar 9 comes into contact with the rear block 24 and the rear block 24 is pushed against the urging force of the spring 74, the rear block 24 rotates as shown in FIG. The rear mounting bar 9 is sandwiched and held while rotating around the moving shaft 73. As a result, the attachment 6 is clamped to the mounting arm 17.

  In the above embodiment, the front block 23 has an L-shaped cross section, and the rear block 24 has a C-shaped cross section. However, as the shapes of the front block 23 and the rear block 24, Not limited. The front block 23 only needs to have a shape for placing and holding the front mounting bar 8. The rear block 24 only needs to have a shape that holds the rear mounting bar 9 therebetween.

  Further, the front block 23 may have a shape that holds the front mounting bar 8 in between, and the rear block 24 may have a shape that holds the rear mounting bar 9 in place, or The front block 23 may have a shape that holds the front mounting bar 8 therebetween, and the rear block 24 may have a shape that holds the rear mounting bar 9 therebetween.

  Moreover, in the said embodiment, although the link members 55 and 56 are the structures attached to the arm part 21b so that rotation is possible together via the rotating shaft 58, it is not restricted to it in particular, A link member The configuration may be such that 55 and 56 are integrally formed and rotated via a rotation shaft 58.

  Furthermore, in the above-described embodiment, the mounting arm 17 is attached to the unit frame 15 so as to be openable / closable (turnable). However, the present invention is not limited to this, and the mounting arm 17 is tilted sideways to the unit frame 15. It may be fixed.

  Further, in the above embodiment, the mounting arm 17 is raised by raising the main body unit 12 with respect to the drive unit 13 by the elevating cylinder 14, but in the present invention, the mounting arm of the transporter can be raised and lowered. The present invention can be applied to a structure in which the carrier is mounted on the bed 2 by raising and lowering the bed 2 without being structured.

  Furthermore, although the conveyance assistance apparatus 1 of the said embodiment is an apparatus which assists conveyance of the bed 2, as a conveyance target object, it is not restricted especially to the bed 2, Even if it is a trolley | bogie etc. for conveying a load | bag good.

DESCRIPTION OF SYMBOLS 1 ... Conveyance assistance apparatus, 2 ... Bed (conveyance object), 8 ... Front part attachment bar (attachment part), 9 ... Rear part attachment bar (attachment part), 10 ... Conveyor, 15 ... Unit frame (body part), DESCRIPTION OF SYMBOLS 17 ... Mounting arm (mounting part), 20 ... Base, 23 ... Front side block (1st engaging member), 24 ... Rear side block (2nd engaging member), 25 ... Link mechanism, 26 ... Unit frame (main-body part) , 28... Drive wheel, 54... Rotating shaft (second rotating shaft), 55. Link member (first link member), 56. Link member (third link member), 57. Member), 58... Rotating shaft (first rotating shaft), 59... Spring (elastic member), 72 and 74.

Claims (5)

In the transfer machine for the transfer auxiliary device that assists the transfer of the transfer object having two attachment portions,
The main body,
A drive wheel rotatably attached to the lower end of the main body,
An attachment part attached to the main body part and attached to the conveyance object;
The mounting portion includes a base, a first engagement member disposed on the base and engaged with one of the two attachment portions, and the main body with respect to the first engagement member on the base. A second engaging member that is disposed on the opposite side of the first portion and engages with the other of the two mounting portions, and an elastic force that biases the first engaging member and the second engaging member toward the upper side of the mounting portion. And having a member
At least one of the first engagement member and the second engagement member has a shape that holds the attachment portion in between. The first engagement member has a shape such that the one attachment portion is placed and held;
The transporting machine according to claim 1, wherein the second engagement member has a shape that holds the other attachment portion in between.   The transport device according to claim 2, wherein the mounting portion further includes a link mechanism that connects the first engagement member and the second engagement member. The link mechanism includes a first link member fixed to the first engagement member, a second link member fixed to the second engagement member, the first link member, and the second link member. A third link member to be connected,
The first link member and the third link member are rotatably attached to the base via a first rotation shaft,
The second link member and the third link member are rotatably connected to each other,
The transporting machine according to claim 3, wherein the second engaging member is rotatably attached to the base via a second rotating shaft. The conveyor according to claim 4, wherein the elastic member is disposed between the base and the second link member.

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