JP2016107716A - Power unit device and load receiving platform lifting device having power unit device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power unit device capable of suppressing occurrence of wire disconnection while keeping operability and facilitating wiring.SOLUTION: A power unit device comprises: a power unit 15 which is stored so as to be taken in and out from one end part in a longitudinal direction of a cross member provided in a vehicle having a load receiving platform, and is a hydraulic driving source for operating the load receiving platform; a control part 16 for controlling the power unit 15, which is stored in the cross member 14 so as to move integrally with the power unit 15 during taking in and out; and an operation part 17 connected to the control part 16 for outputting signals for operating the power unit 15 to the control part 16. The operation part 17 is provided at one end part in a taking in/out direction of the power unit 15, among both end parts in the taking in/out direction, on the side corresponding to one end part of the cross member 15 in a stored state.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a power unit device including a power unit that is a hydraulic drive source for operating a load receiving table lifting device provided in a cargo handling vehicle, and a load receiving device lifting device including the power unit device.

  The power unit device includes a power unit formed by integrating components such as an oil tank, a pump, an electric motor, and a valve block, a control unit that controls the power unit, and a signal for operating the power unit to the control unit. And a control switch as an operation unit (Patent Document 1).

  The power unit and the control unit configured as described above are housed in the cross member, and the control switch is lifted up and down by one of a pair of lifting columns that are erected outside the cross member, that is, at both ends of the cross member, so as to be easily operated. It is attached to the upper side (outer side) of the column. And a control switch and the control part in a cross member are connected by the electric wire.

JP 2010-100130 A

  In the configuration of Patent Document 1, in order to connect the power unit housed in the cross member and the control switch located outside the cross member with an electric wire, the power unit housed in the cross member is crossed from the power unit housed in the cross member. A long distance wiring to the control switch mounted at a position away from the member is required. For this reason, there is a disadvantage that the wiring becomes complicated.

  Further, when the power unit is taken in and out of the cross member, the length of the electric wire connecting the control unit of the power unit and the control switch is set to be longer in consideration of the margin. For this reason, not only the wiring is further complicated, but also when the power unit is inserted into and removed from the cross member, a tensile force is unexpectedly applied to the electric wire, which may cause a disconnection.

  Therefore, an object of the present invention is to provide a power unit device and a load receiving table lifting device including the power unit device that can suppress the occurrence of disconnection while maintaining the operability and simplifying the wiring.

  The power unit device of the present invention is housed in a longitudinal direction of a cross member provided in a vehicle having a load receiving base so as to be able to be taken in and out, and is a power unit serving as a hydraulic drive source for operating the load receiving base. A control unit that is housed in the cross member so as to move integrally with the power unit and controls the power unit, and an operation for outputting a signal for operating the power unit connected to the control unit to the control unit. The operation unit is provided at an end of the housed power unit corresponding to one end in the longitudinal direction of the cross member.

  According to the above configuration, the power unit and the control unit are provided when the power unit is inserted and removed while maintaining the operability by providing the operation unit at the end corresponding to the one end in the longitudinal direction of the cross member. Since the operation unit moves integrally, the pulling force does not act on the electric wire connecting the control unit and the operation unit, and disconnection can be suppressed. In addition, it is not necessary to arrange the electric wire to a position far away from the cross member, and since the length of the electric wire is a predetermined distance sufficient to connect the operation unit to the control unit, wiring is easily performed. be able to.

  The power unit device of the present invention is provided with a lid for closing the opening of one end of the cross member in the housed state of the power unit at the end of the power unit corresponding to the one end in the longitudinal direction of the cross member. A configuration in which the operation unit is attached to the lid may be employed.

  In the above configuration, the member to which the operation unit is attached can be used as a lid that closes the opening at one end of the cross member, so the number of members can be reduced.

  The power unit device of the present invention may have a configuration in which a pair of handles is provided on the lid, and the operation unit is disposed between the pair of handles.

  If the operation unit is arranged between the pair of handles as in the above configuration, it is easy to avoid contact of other objects with the operation unit with the pair of handles.

  The power unit device of the present invention may be configured such that the pair of handles are disposed at front and rear ends in the traveling direction.

  If the pair of handles are arranged at the front and rear ends in the traveling direction as in the above-described configuration, it is possible to prevent other objects from coming into contact with the operation unit from the front and rear, particularly during traveling (during forward or back). It is easy to avoid.

  In the power unit device of the present invention, the lid includes an inner surface facing the inner side of the cross member and an outer surface facing the outer side, and the operation portion and the handle are attached to the outer surface. The configuration may be such that it protrudes further outward than the operation portion.

  Like the said structure, when the handle protrudes to the outer side rather than the operation part, an operation part can be effectively protected with a handle.

  It may be a load receiving table lifting device provided with the power unit device of the present invention.

  The present invention includes a power unit device and a power unit device that can suppress the occurrence of disconnection while maintaining operability and simplifying wiring by providing an operation portion at the end of the power unit in and out. A load receiving table lifting device can be provided.

It is a whole front view of the outline of the load receiving table lifting device provided with the power unit device of the present invention. It is the whole power unit apparatus side view seen from the vehicle body front. It is the whole left side view of the state where the power unit of the power unit device was pulled out. It is a whole top view of the power unit. It is an expanded side view of the principal part of the same power unit seen from the vehicle body front. It is the front view which looked at the same power unit device from the drawer direction one end side (handle side). FIG. 3 is an enlarged side view of the lid of the power unit viewed from the front of the vehicle body. It is an enlarged front view of the same lid. It is an enlarged bottom view of the same lid. It is a disassembled perspective view of the terminal box with which a cross member is equipped. It is a figure which shows the state which removed the cover of the terminal box.

  Hereinafter, a power unit device according to an embodiment of the present invention will be described. This power unit device is used, for example, for driving an actuator of a load receiving table lifting device mounted on a truck. Prior to the description of this power unit device, the schematic configuration of the lorry and the cradle lifting device will be described. In FIGS. 1 to 3, 5 to 8, and 11, “X” in “○” indicates the direction from the front of the paper to the back, and “○” Those with “·” in them indicate the direction from the back to the front of the page.

  Referring to FIG. 1, a cargo box 1 having a cargo bed 3 on a vehicle body 2 is mounted on a truck 1. At the rear portion of the vehicle body 2, a load receiving platform lifting / lowering device 5 for loading and unloading loads on the loading platform 3 is disposed via an attachment frame 6 attached to the rear portion of the vehicle body 2. The load receiving table lifting device 5 includes a pair of left and right lifting frames 7 and a rectangular plate-shaped load receiving table 8. In addition, the load receiving table elevating device 5 further includes a pair of left and right parallel links 9. The parallel link 9 has a pair of left and right elevating frames 7 in a fixed posture, and a maximum rising position (indicated by a one-dot chain line in FIG. 1) where the load receiving platform 8 is substantially the same height as the upper surface of the load loading platform 3. It is possible to move up and down between the lowest position 8 (shown by a two-dot chain line in FIG. 1) in which 8 is grounded. A hollow reinforcing support member 10 for reinforcing the load receiving table 8 is fixed to the rear surface of the load receiving table 8 in a pair of left and right.

  Further, the load receiving table elevating device 5 includes an elevating cylinder (lift cylinder) 11. The lifting cylinder 11 is a hydraulic actuator for driving the lifting frame 7 up and down. The lifting cylinder 11 is arranged between each parallel link 9 and the mounting frame 6. A base frame 12 of a load receiving platform 8 is pivotally supported on each of the left and right lifting frames 7. It can be rotated between a horizontal overhanging position (shown by a one-dot chain line in FIG. 1).

  Further, the load receiving table elevating device 5 includes a hoisting cylinder (tilt cylinder) 13. The hoisting cylinder 13 is a hydraulic actuator for raising and lowering the load receiving table 8. The hoisting cylinder 13 is disposed between a support bracket (not shown) fixed to the back surface of the load receiving platform 8 and the elevating frame 7. By extending the hoisting cylinder 13, the load receiving base 8 can be raised.

  Further, the load receiving table lifting device 5 includes a cross member 14. The cross member 14 extends in the vehicle width direction, which is a direction orthogonal to the vehicle front-rear direction, as a longitudinal direction, and is disposed on the rear lower surface of the vehicle body 2. The cross member 14 includes a bottom wall 14A, a top wall 14B, front and rear side walls 14C and 14D, and has a hollow cross-sectional rectangular shape with one end in the longitudinal direction closed (in the drawing, a square shape, but a rectangular shape) It is also good). A middle portion in the longitudinal direction of the top wall 14B of the cross member 14 is fixed (for example, welded) to the lower surface of the rear portion of the vehicle body 2. Each attachment frame 6 is formed with an insertion opening 6a, and a portion near each end in the longitudinal direction of the cross member 14 is inserted into the insertion opening 6a, and the cross member 14 and each attachment frame 6 are fixed in the inserted state. (For example, welding).

  The power unit device of the present invention is connected to a power unit 15 that is a hydraulic drive source used for operating a cargo cradle 8 provided in a lorry, a controller 16 as a control unit that controls the power unit 15, and the controller 16. And an operation unit 17.

  As shown in FIGS. 2 to 5, the power unit 15 is housed in the cross member 14 and is configured to be able to be inserted and removed from an opening 14 </ b> K (see FIG. 3) at one end in the vehicle width direction that is the longitudinal direction of the cross member 14. ing. When the power unit 15 is taken in and out, the pair of handles 31, 31 (described later) of the lid 19 fixed to one end in the longitudinal direction of the base member (described later) 18 are grasped and pulled or pushed into the power unit 15. Insert and remove from the cross member 14. When the power unit 15 is stored in the cross member 14, the lid 19 closes one end in the longitudinal direction (opening 14 </ b> K) of the cross member 14 (see FIG. 2), and when the power unit 15 is pulled out from the cross member 14. Then, the cross member 14 is separated from the opening 14K at one end in the vehicle width direction (see FIG. 3).

  The power unit 15 includes a valve block 20, a tank (oil tank) 21, and a pump 22, which are a plurality of components, and a power unit main body 23 that hydraulically controls the operation of the load receiving table 8, and each component 20 of the power unit main body 23. , 21, 22 are provided with a positioning member 18 for positioning the cross member 14 at a predetermined position in the vehicle width direction, and a protection member 24 for protecting the power unit main body 23. The protection member 24 is disposed between the power unit main body 23 and the cross member 14 in the storage state in which the power unit 15 is stored in the cross member 14.

  Further, the power unit 15 includes a pair of front and rear holding members 25 and 25 that integrally hold the valve block 20, the tank 21, and the pump 22 that are components of the power unit main body 23, and the top wall 14 </ b> B of the cross member 14. A portal cover 26 that prevents the contact of the power unit 23, a vibration-proof rubber (not shown) that protects the power unit main body 23 from vibrations, an electrical wiring 27 (see FIG. 5), and a hydraulic pipe 28 (see FIG. 5). It has.

  3 and 5, the positioning member 18 is a member extending in the longitudinal direction of the cross member 14, and a base on which the valve block 20, the tank 21, and the pump 22 are placed side by side in the longitudinal direction of the cross member 14. It is a member. The base member 18 includes a rectangular and flat base main body 18A, and front and rear inclined plate portions 18B and 18B (in the drawing, inclined obliquely so as to expand outwardly from the front and rear ends of the base main body 18A. Only one side) and front and rear plate-like cover portions 18C and 18C (only one side is shown in the figure) standing up from the upper ends of the inclined plate portions 18B and 18B. The base main body 18A is formed in a flat plate that follows the wall surface of the bottom wall 14A of the cross member 14, and is set to a length sufficient to place the power unit main body 23 thereon. The cover portions 18C and 18C are formed wider than the dimensions of the power unit main body 23 in the vehicle front-rear direction. A plurality of screw holes are formed in the base main body portion 18 </ b> A of the base member 18, and screw insertion holes that match the screw holes are formed in the bottom wall 14 </ b> A of the cross member 14. Therefore, the power unit 15 is fixed to the cross member 14 by screwing the screw inserted through the screw insertion hole into the screw hole in the housed state where the power unit 15 is stored in the cross member 14. As shown in FIG. 8, the power unit 15 and the lid body 19 pass bolts 19N through lid holes 19c provided at the four corners of the lid body 19 and holes (not shown) of brackets fixed to the cross member 14. It is fixed by screwing a nut (not shown) into the tip of the bolt 19N. Further, by loosening the screw, the fixing can be released and the power unit 15 can be pulled out from the cross member 14.

  As shown in FIG. 5, a plate-like resin pad P is attached to the upper surface of the pump 22. With this resin pad P, the distance between the inner surface of the top wall 14B of the cross member 14 and the upper end of the pump 22 of the power unit 15 can be reduced. For this reason, the resin pad P indicates that the power unit 15 is moved up and down in the cross member 14 due to vibration during traveling of the lorry 1, so that the power unit 15 is damaged or abnormal noise is generated in the cross member 14. Can be suppressed. In order to suppress the vertical movement of the power unit 15, for example, the base member 18 can be sandwiched by metal fittings provided in the cross member 14. When the base member 18 is sandwiched by metal fittings provided in the cross member 14 so that the base member 18 is fixed to the cross member 14, the power unit 15 is fixed to the cross member 14 with screws. May be. Various other means can be employed.

  The valve block 20 is a portion that relays the flow of hydraulic oil between the tank 21 and the raising and lowering cylinders 11 and the undulation cylinders 13 (see FIG. 1) that are actuators. The valve block 20 includes a needle valve for opening and closing the platform (not shown), a flow control valve for adjusting the descending speed of the load receiving platform 8, a relief valve for adjusting the discharge pressure of hydraulic oil, and an adjustment unit. A needle valve adjustment unit, a flow control valve adjustment unit, and a relief valve adjustment unit are provided, and a pressure sensor is further provided.

  The controller 16 is fixed to the other end of the base member 18 in the longitudinal direction of the cross member 14 (the end on the side away from the opening 14K of the cross member 14) and moves integrally with the power unit 15 to be taken in and out. Housed in the cross member 14. The controller 16 opens and closes the various valves provided in the valve block 20 of the power unit 15 so as to expand and contract the lifting and lowering cylinders 11 and 13 in response to a signal output from the operation unit 17. It is a control part to control.

  The operation unit 17 is provided in the lid body 19 that closes the opening 14 </ b> K at one end of the cross member 14, and outputs a signal for operating the power unit 15 to the controller 16. Specifically, the operation unit 17 includes two switches 17A and 17B. As shown in FIGS. 6 to 9, the operation unit 17 stores the cargo receiving platform at the upper right portion of the lid 19 as viewed from the front (the left side of the vehicle body). An overhanging switch 17A is provided, and an elevating switch 17B for a load receiving base is provided in the center on the right side of the lid 19 as viewed from the front (left side of the vehicle body). The lid body 19 includes an inner surface 19 a facing the inner side of the cross member 14 and an outer surface 19 b facing the outer side of the cross member 14. A switch 17A, 17B, an emergency switch 17C described later, and a connector 17D for sucking data stored in the controller 16 are attached to the outer surface 19b of the lid body 19. A case 19Z for enclosing the switches 17A and 17B, the emergency switch 17C, and the connector 17D is attached to the outer surface 19b of the lid body 19. Further, a display unit (monitor) E for displaying an error message or the like in characters is provided below the emergency switch 17C and the connector 17D. The operation unit 17 is provided in the lid 19, and the lid 19 is in a position to close one end in the longitudinal direction (opening 14 </ b> K) of the cross member 14 in a state where the power unit 15 is housed in the cross member 14. For this reason, the operating unit 17 is located at the end corresponding to one end of the cross member 14 in the longitudinal direction in the storage state of the power unit 15.

  In FIG. 8, one of the switches, the storage ledge storage overhanging switch 17A, is tilted to the left, so that the cradle 8 can be raised to the upright storage position (shown by a solid line in FIG. 1). Further, in FIG. 8, a horizontal overhanging position (shown by a one-dot chain line in FIG. 1) is set so that the load receiving base 8 is substantially flush with the upper surface of the loading base 3 by tilting the storage overhanging switch 17 </ b> A to the right side. ). In addition, the load receiving table 8 can be raised by tilting upward the switch 17B for lifting the load receiving table, which is the other switch in FIG. 8, and the switch 17B for raising and lowering the load receiving table in FIG. By performing the tilting operation to the side, the load receiving platform 8 can be lowered and positioned at the lowest lowered position indicated by a two-dot chain line in FIG.

  The two switches 17 </ b> A and 17 </ b> B are connected to the controller 16 by two electric wires (not shown) having a length from the back surface of the lid body 19 (inner surface facing the inner side of the cross member 14) to the controller 16. . In addition to these two switches 17A and 17B, an emergency switch 17C and a connector 17D, which will be described later, are similarly connected to the controller 16 by two wires (not shown) having a length from the back surface of the lid 19 to the controller 16. It is connected. These four wires (not shown) are housed in a flexible synthetic resin conduit D1 as shown in FIG. 5, and the conduit D1 is connected to the valve block 20 and the pump 22 for protection. After rising up through the stay S provided at the lower part of the member 24, it is moved to just above the controller 16. And each of the four electric wires in the conduit D1 is connected to the terminal of the corresponding controller 16.

  Further, as shown in FIG. 8, an emergency switch 17 </ b> C made of a toggle switch and a connector 17 </ b> D having an insertion port are arranged in the left-right direction on the upper left side of the lid 19. The emergency switch 17C avoids a situation where the controller 16 breaks down and the load receiving platform 8 does not operate even when the retracting switch 17A and the lifting switch 17B are operated, that is, the load on the loading platform 3 cannot be unloaded. Therefore, it is a switch for forcibly operating the receiving platform 8. Specifically, when the emergency switch 17C is operated, electricity is supplied to the valve without passing through the controller 16, and the load receiving platform 8 is positioned at the horizontal overhanging position (see the one-dot chain line in FIG. 1) and then the lowest lowered position. (See the two-dot chain line in FIG. 1). Thereby, the load on the loading platform 3 can be unloaded. Since the emergency switch 17C and the connector 17D are not normally used, the openable opening / closing plate K1 shown in FIG. 6 is fixed with screws B1 so as not to be operated by mistake, and the emergency switch 17C and the connector 17D are covered. Yes. FIG. 8 shows a state where the opening / closing plate K1 is removed, and the screw B1 is left attached.

  In addition, handles 31 and 31 are provided at both ends in the width direction of the lid 19 (front and rear ends when viewed from the vehicle body 2), and the gripping portions 31a and 31a that are the tips of the handles are illustrated on the plane of FIG. When viewed from the front, the switch 19 protrudes outward from the front end (front end in the vehicle width direction) of the switches 17A and 17B protruding from the lid 19 other than the handles 31 and 31 to the outermost side in the vehicle width direction. Further, the handles 31, 31 are made of metal in a U shape in a side view (a hard resin having substantially the same strength may be used). In this way, by providing the handles 31 at both ends in the width direction of the lid 19, by disposing the retracting extension switch 17 </ b> A and the lifting switch 17 </ b> B between the pair of handles 31, 31, the switches 17A, 17B can be protected by the handles 31, 31. Further, the power unit 15 can be taken in and out of the cross member 14 by grasping and pulling or pushing in the pair of handles 31, 31. Here, the upper ends of the handles 31, 31 in the vertical direction of the vehicle are positioned below the upper switch 17A, but the same height or the upper ends of the handles 31, 31 are the same height position as the upper switch 17A. Or you may comprise and implement the handles 31 and 31 so that it may be located above the upper switch 17A.

  As described above, since the pair of handles 31 and 31 are positioned at the front and rear ends of the lid 19 in the traveling direction, the handles 31 and 31 are provided on the front and rear sides in the traveling direction of the switches 17A and 17B. In particular, during traveling (during forward or back), it is easy to avoid the other objects coming into contact with the two switches 17A and 17B from the front and rear directions with the pair of handles 31 and 31.

  Moreover, since the member which attaches two switch 17A, 17B can be shared by the cover body 19 which closes the opening part 14K of the one end part of the cross member 14, the number of members can be reduced.

  By providing the two switches 17A and 17B at the end of the power unit 15 in and out, the power unit 15, the controller 16, and the switches 17A and 17B move together when the power unit 15 is inserted and removed while maintaining operability. Since the distance between the controller 16 and the switches 17A and 17B is always the same, the pulling force does not act on the wire connecting the controller 16 and the switches 17A and 17B when the power unit is inserted or removed, and the disconnection is prevented. Can be suppressed. In addition, it is not necessary for the electric wire to bypass other devices outside the cross member 14, and the length of the electric wire is accommodated in the cross member 14 from the switches 17A and 17B at the end of the power unit 15 in and out. Since a predetermined distance is sufficient to connect to the controller 16, wiring can be easily performed.

  The storage state of the power unit 15 is a state in which at least a part of the power unit 15 is stored in the cross member 14, and a part of the power unit 15 protrudes from one end of the cross member 14, or one end of the power unit 15 is The cross member 14 may be positioned from one end to the back side (the other end side). Even in this case, since the power unit 15 is provided with the switches 17A and 17B, the power unit 15 and the switches 17A and 17B can be moved integrally when the power unit 15 is inserted and removed. The electric wire between 17B can be simplified as a fixed length, and the occurrence of disconnection of the electric wire can be suppressed when the power unit 15 is put in and out.

  The lid 19 is provided at one end of the base member 18 in the longitudinal direction of the cross member. Since the lid 19 is provided with switches 17A and 17B, the switches 17A and 17B are provided at the end of the power unit 15. Is provided. When the power unit 15 is housed at one end in the longitudinal direction of the cross member, the lid 19 is disposed at one end of the cross member 14, so that the switches 17A and 17B can be positioned outside the vehicle. Thereby, the switches 17A and 17B can be arranged outside the vehicle that is easy for the operator to operate. The switches 17A and 17B are not limited to the above positions, and may be in other positions. Specifically, the switches 17A and 17B may be provided at the end of the power unit 15 within the distance that the operator reaches the inside of the vehicle from the side wall of the cargo box 4, whereby the worker can The switches 17A and 17B can be operated without being submerged. When the switches 17A and 17B are provided in the power unit 15 at positions corresponding to the bottom wall 14A, the top wall 14B, and the front and rear side walls 14C and 14D of the cross member 14, the switch 17A in the retracted state of the power unit 15 of the cross member 14 is provided. , 17B may be formed so that a cutout or a hole is formed at a position where the switches 17A, 17B are located, and the switches 17A, 17B can be operated.

  The lid body 19 may have a shape that covers the power unit 15 with the cross member 14 and the lid body 19. When the power unit 15 is in the retracted state at a position where a part of the power unit 15 protrudes from one end of the cross member 14. The lid 19 has a C-shaped cross section and is provided so as to cover the protruding portion of the power unit 15.

  In the above embodiment, the storage state of the power unit 15 is set to a state in which one end of the power unit 15 is positioned substantially coincident with one end of the cross member 14, so that the lid 19 has a substantially single plate shape. Can be manufactured at low cost. Further, since the distance between the power unit 15 and the switches 17A and 17B is close, there is an advantage that the wiring can be shortened.

  The power unit 15 is configured by integrally attaching the electric motor 32 shown in FIG. 5 and the controller 16 described above to the base member 18 in addition to the power unit main body 23 including the valve block 20, the tank 21, and the pump 22. ing. The electric motor 32 is for driving the pump 22 and is disposed adjacent to the pump 22.

  The power supply to the controller 16 will be described. As shown in FIG. 4, after the other end of the electric wire 33 whose one end is connected to the controller 16 extends to the end side away from the lid body 19 of the cross member 14. By extending toward the lid 19 side, it is folded back into a U shape. The other end of the folded electric wire 33 is positioned outside the cross member 14 through an opening (not shown) formed at a substantially central portion in the longitudinal direction of the cross member 14. The opening is provided with a box portion 34 covering the opening, and the other end of the electric wire 33 passed through the space of the box portion 34 is passed through. The other end of the electric wire 33 is connected to an outer terminal box 36 attached to the front side wall 14 </ b> C of the cross member 14 in the vicinity of the lid 19.

  As shown in FIGS. 10 and 11, the outer terminal box 36 includes a box-type terminal box main body 36A for housing the terminal block 37, and a terminal box lid 36B for closing the opening 36K of the terminal box main body 36A. . The terminal block 37 is configured to be an insertion type that is connected by inserting an electric wire, and connects the secondary electric wire 33 connected to the controller 16 of the power unit 15 and the multiple electric wire insertion holes 37A on the primary side. A plurality of electric wire insertion holes 37B on the side. The other (other) electric wire 33 (battery B) is connected to a secondary-side conductive plate 40 described later by bolts 41 and nuts 42. A large number (10 in the figure) of wire insertion holes 37A on the primary side are formed along the vertical direction on the lid body 19 side (right side in FIG. 11), and a large number (10 in the figure) on the secondary side. The electric wire insertion hole 37B is formed side by side along the vertical direction on the side away from the lid 19 (left side in FIG. 11). The secondary-side wire insertion hole 37 </ b> B after the other end of the wire 33 having one end connected to the controller 16 of the power unit 15 is inserted is covered with a detachable cover plate 38. As described above, the secondary-side wire insertion hole 37 </ b> B, which is a connection portion of the wire from the controller 16, is covered by the cover plate 38, so that the wire inserted on the secondary side can be pulled out unless the cover plate 38 is removed. Can not. For this reason, when removing the cover 36B of the outer terminal box 36 and inserting the electric wire from the driver's seat switch T (for example, the switch for supplying power to the power unit 15) into the primary electric wire insertion hole 37A, an operator mistakenly It can suppress that the electric wire currently inserted in the electric wire insertion hole 37B of the secondary side is pulled out, and an efficient wiring operation | work is attained. Since the two electric wires from the terminal of the battery B are thicker than the other electric wires, the primary and secondary conductive plates 39 and 40 connected to the terminal block 37 as shown in FIG. Are connected by bolts 41 and nuts 42.

  The present invention can be variously modified without departing from the spirit of the present invention. In addition, the specific configuration of each part is not limited to the above embodiment. For example, the case 19Z attached to the lid 19 can be omitted.

  In the above embodiment, the U-shaped handles 31, 31 are used, but any shape such as a C shape or a U shape may be used. Moreover, the handle comprised by plate shape may be sufficient. Although the handles 31 and 31 are provided on the front and rear of the vehicle body, only the front and rear sides may be provided. In addition to the handles 31 and 31 having the same shape and the same size, a pair of handles having different shapes and different sizes may be used.

  Moreover, in the said embodiment, although the longitudinal direction of the cross member 14 was made into the vehicle width direction, the direction which cross | intersects the vehicle width direction may be sufficient.

  In the above-described embodiment, the operation unit 17 includes the switches 17A and 17B. However, a dial type or a press type may be used. Although the number of operation units 17 is two, the number of operation units can be freely changed. Further, the present invention can be carried out without providing the stowage storage overhanging switch 17A. In this case, the receiving tray 8 is retracted and extended manually.

  Moreover, in the said embodiment, although the operation part 17 was provided in the cover body 19, an attachment member may be provided in the one end part of the insertion / extraction direction of power units other than the cover body 19, and the operation part 17 may be provided in the attachment member.

DESCRIPTION OF SYMBOLS 1 ... Lorry car, 2 ... Vehicle body, 3 ... Loading platform, 4 ... Cargo box, 5 ... Loading platform raising / lowering device, 6 ... Mounting frame, 6a ... Insertion opening, 7 ... Lifting frame, 8 ... Loading platform, 9 ... Parallel link, DESCRIPTION OF SYMBOLS 10 ... Reinforcement support member, 11 ... Elevating cylinder, 12 ... Base frame, 13 ... Rising cylinder, 14 ... Cross member, 14A ... Bottom wall, 14B ... Top wall, 14C ... Front side wall 14D ... Rear side wall, 14K ... Opening , 15 ... Power unit, 16 ... Controller (control unit), 17 ... Operation unit, 17A ... Storage switch, 17A, 17B ... Switch, 17B ... Elevating switch, 17C ... Emergency switch, 17D ... Connector, 18 ... Base member (Positioning member), 18A: base body, 18B: inclined plate, 18C ... cover, 19 ... lid, 19Z ... case, 19a ... inner surface, 19b ... outer surface, 19c ... lid hole, 19N ... bolt 20 ... Valve block, 21 ... Tank, 22 ... Pump, 23 ... Power unit body, 24 ... Protection member, 25 ... Holding member, 26 ... Portal cover, 27 ... Electrical wiring, 28 ... Hydraulic piping, 31 ... Handle, 31a ... Grasping part, 32 ... Electric motor, 33 ... Electric wire, 34 ... Box part, 35 ... Conduit, 36 ... Outer terminal box, 36A ... Terminal box body, 36B ... Terminal box cover, 36K ... Opening part, 37 ... Terminal block 37A ... Primary side wire insertion hole, 37B ... Secondary side wire insertion hole, 38 ... Cover plate, 39, 40 ... Conductive plate, 41 ... Bolt, 42 ... Nut, B ... Battery, B1 ... Screw, D1 ... Conduit, K1 ... Open / close plate, P ... Resin pad, S ... Stay, T ... Driver's seat switch

Claims (6)

A power unit that is housed in a longitudinal direction of a cross member provided in a vehicle having a load receiving base so as to be able to be taken in and out, and is a hydraulic drive source for operating the load receiving base, and is integrated with the power unit at the time of loading and unloading A power unit device comprising: a control unit that is housed in the cross member so as to move to control the power unit; and an operation unit that is connected to the control unit and outputs a signal for operating the power unit to the control unit Because
The power unit apparatus according to claim 1, wherein the operation unit is provided at an end portion of the housed power unit corresponding to one end portion in the longitudinal direction of the cross member.   An end of the power unit corresponding to one end in the longitudinal direction of the cross member is provided with a lid that closes an opening at one end of the cross member when the power unit is stored, and the operation is performed on the lid The power unit device according to claim 1, wherein a portion is attached.   The power unit device according to claim 2, wherein the lid is provided with a pair of handles, and the operation unit is disposed between the pair of handles.   The power unit device according to claim 3, wherein the pair of handles are arranged at front and rear ends in the traveling direction.   The lid includes an inner surface facing the inner side of the cross member and an outer surface facing the outer side, and the operation portion and the handle are attached to the outer surface, and the handle is located outside the operation portion. The power unit device according to any one of claims 2 to 4, wherein the power unit device protrudes to the side.   A load receiving table lifting device comprising the power unit device according to claim 1.

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