JP5121407B2 - Self-propelled lifter traveling cart loading / unloading device that can be loaded / unloaded by yourself - Google Patents

Description

  The invention of the present application is capable of truck transportation and can be self-propelled by each traveling carriage, and each traveling carriage is detachable, and the lifter body can be loaded and unloaded on the truck bed by itself. It relates to a lowering device.

  23 and 24 show a truck-mounted lifter disclosed in Japanese Patent Laid-Open No. 2001-341980 (Patent Document 1). This known truck-mounted lifter has a structure in which jacks 11A and 11A made up of telescopic booms are erected on left and right carts 3A and 3A, respectively, and a telescopic beam 10A is installed between upper ends of the jacks 11A and 11A. Has been. The jack 11A, the telescopic beam 10A, and the like are generally expanded and contracted by a hydraulic cylinder, but one hydraulic unit 5A serving as a driving source for the hydraulic cylinder is installed on each of the carriages 3A and 3A.

  A three-stage boom is used for each jack 11A, 11A. Then, as shown by the solid line in FIG. 23, the lifter can be loaded on the truck bed 81 in a state where the jacks 11A, 11A and the telescopic beam 10A are contracted to the minimum. In order to lower the lifter from the truck bed 81, first, as shown in the chain line in FIG. 23, the telescopic beam 10A is extended to the left and right, and the distance between the carriages 3A, 3A (and the jacks 11A, 11A) is set. After expanding 81 to a position straddling the width direction, the wheels 33A and 33A of the carriages 3A and 3A can be grounded to the ground G by extending the jacks 11A and 11A as shown in FIG. Therefore, the entire process from the state in which the lifter is mounted on the truck bed 81 until it becomes independent on the ground can be performed by the lifter itself.

The on-vehicle lifter shown in FIG. 23 can be transported by being loaded on the truck bed 81. However, when the lifter is mounted on the truck bed 81 and travels on a public road, the height limit (H ₁ ) is restricted by the road transport vehicle method. 3.8m is specified. Further, as a truck on which this type of lifter can be mounted, a considerably large truck is used, so that the upper surface height H ₀ of the truck bed 81 is about 1.2 to 1.3 m. Therefore, in this truck-mounted lifter, it is necessary to limit the total height of the lifter itself to 2.5 to 2.6 m when the jacks 11A and 11A are in the most contracted state. In the state where the lifter is mounted on the truck bed 81, the lifter is supported by the support board 2 in a state where the wheels 33A of the carriage 3A are lifted from the upper surface of the truck bed 81. Therefore, the substantial overall height of the lifter is 2 It is limited to about 4-2.5m.

By the way, in the truck-mounted lifter of FIG. 23 and FIG. 24, when the loading / unloading load Y is high, when the loading / unloading Y is loaded / unloaded to a high position (for example, on a truck bed), the lift of the beam 10A is changed accordingly. It must be enough for uplifting, for which it is necessary to increase the stretch stroke S ₁ of the jack 11A. Thus jack 11A, in order to increase the stretch stroke S ₁ of 11A, either the jack 11A and a multistage boom (e.g. 5 boom), those with a reduced boom stages (e.g. 3 boom) in the single boom length Need to be long.

  However, in this type of lifter, if the number of boom stages is increased (for example, a five-stage boom), the overall height of the lifter can be lowered in the minimum contracted state of the jack, but it is necessary to extend and retract many single booms. The structures of 11A and 11A are complicated and the cost is increased, and there is a problem that the weight of the jack 11A is increased and the entire lifter is increased in weight. On the other hand, if the number of boom stages is reduced (for example, a three-stage boom) and the length of a single boom is increased, the beam height is increased even when the jack 11A is in the most contracted state, and a high storage space is required when not in use. Become.

Further, in the truck-mounted lifter as shown in FIG. 23 and FIG. 24, the single boom length of the jack 11A is reduced because the total height H ₁ in the truck-mounted state during public road driving is limited to 3.8 m. Therefore, the lift H _{2 of the} beam 10A cannot be made very large. That is, in the state where the lifter is mounted on the truck bed 81 as shown in FIG. 23, the allowable height of the lifter itself obtained by reducing the upper surface height H ₀ (1.2 to 1.3 m) of the truck bed 81 is 2. When the height of the carriage 3A itself and the thickness of the beam 10A are reduced, the actual allowable length when the jack 11A is contracted is about 1.6 to 1.7 m. If 3 boom excluding polymerization allowance of each boom up telescopic stroke S ₁ is considerably shorter and about 2.2～2.4M. Therefore, the maximum height (H _{2 in the} figure) of the beam 10A when the lifter is used can be lifted only up to about 4 m, and it may be impossible to load and unload a high load Y at a high position. is there.

  Further, if a self-propelled type is adopted for the lifter carriage 3A, it is necessary to use a relatively large diameter wheel 33A, and a space for installing traveling drive means (hydraulic motor, gear device, etc.) is required. As a result, the total height of the traveling carriage increases to about 500 mm. Therefore, in a truck-mounted lifter, when a self-propelled traveling carriage is used, it is necessary to shorten the length of the jack 11A because the total height of the carriage is increased.

  Therefore, the present applicant has already disclosed a self-propelled lifter in Japanese Patent Application No. 2006-345783 (Patent Document 2) in which a traveling carriage can be attached to and detached from a jack in a lifter using a self-propelled traveling carriage. is suggesting.

  The self-propelled lifter of Patent Document 2 has four jacks, and a traveling carriage can be detachably attached to the lower end of each jack. In the self-propelled lifter disclosed in Patent Document 2, each truck is separated from the lifter main body (each jack) and loaded on the truck bed during truck transportation, so that the lifter can be transported with the total height of the lifter lowered. ing. Each traveling carriage separated from the lifter body is transported on an extra space on a truck bed for transporting the lifter body, or transported by another truck. When assembling the self-propelled lifter at the site of use, first, each traveling carriage is lowered from the truck bed to the ground, and is positioned at a predetermined position on the left and right sides of the truck carriage on which the lifter body is mounted. Connect the lower end of each jack of the lifter body to the carriage.

JP 2001-341980 A Japanese Patent Application No. 2006-345783

  By the way, in the self-propelled lifter of Patent Document 2 (Japanese Patent Application No. 2006-345783), the overall height of the entire lifter can be lowered by separating each traveling carriage during truck transportation, but each traveling carriage has a considerable weight. Therefore, a crane is used to lower each traveling carriage from the truck bed to the ground (or to load the running carriage onto the truck bed from the ground) at the site of use.

  However, in the self-propelled lifter of Patent Document 2 described above, when there is a crane at the site of use, each crane can be lowered from the truck bed with the crane, but when there is no crane at the site of use, the traveling cart is used. It is necessary to transport a crane truck for loading and unloading to the site of use. Therefore, in this case, there is a problem that a separate crane vehicle is necessary and the delivery cost of the crane vehicle is high.

  Accordingly, the present invention is a self-propelled lifter capable of separating and transporting each traveling carriage with respect to the lifter body and capable of loading and unloading the truck from the truck bed by itself. An object of the present invention is to provide a traveling cart loading / unloading device.

  The present invention has the following configuration as means for solving the above problems. The invention of the present application is a self-propelled lifter that can be transported by truck and can be detachably attached to the lower end of each jack of the lifter body. It is intended for a traveling cart loading / unloading device for unloading.

The invention of claim 1 of the present application The self-propelled lifter used in the invention of claim 1 of the present invention has four jack mounting arms, each having a jack attached to the tip thereof, installed in the vicinity of the four corners of the lifting frame having a substantially rectangular planar form. In addition, a traveling carriage can be detachably attached to each lower part of the four jacks.

  As each jack (four), a telescopic boom type can be adopted, but the jack used in the present application may have a relatively small number of boom stages such as a three-stage boom. The number of boom stages is not particularly limited. In addition, considering that the jacks are transported by placing the lifter on the truck bed (the height limit is stipulated by the road transport vehicle law is 3.8 m), each jack has a length of 2. It is appropriate to set it to about 3 to 2.4 m.

  The elevating frame is obtained by assembling a frame material into a substantially rectangular shape. The lifting frame is indirectly mounted at a predetermined height position of the uppermost boom of each jack via a jack mounting arm such as a swing arm or a retracting arm.

  Each traveling carriage (four) is independent, and is configured to be able to travel by a traveling drive device (for example, a hydraulic motor or an electric motor). Each traveling carriage is preferably provided with three or four wheels (one that can stand on its own). Since this traveling carriage is self-propelled, a relatively large wheel (wheel diameter is, for example, about 40 cm) is used, so the overall height is considerably high (for example, the overall height of the traveling carriage is about 50 cm). Further, the traveling carriage used in the self-propelled lifter according to claim 1 has a considerable weight, but can be moved by hand.

  In this self-propelled lifter, each traveling carriage (four) is detachably attached to the lower end of each jack. The traveling carriage can be attached to and detached from the lower end of each jack by, for example, connecting / disconnecting with a bolt or locking / unlocking with an appropriate stopper. The self-propelled lifter becomes a lifter body in which the lifting frame and the jacks are combined when the traveling carriage is separated from the lower ends of the jacks.

  The self-propelled lifter used in the present application can be loaded and transported on a truck bed, and the jack mounting arm stores each jack on the truck bed and each arm storage position. Each of them can be displaced between arm working positions that protrude from the left and right sides of the truck bed. The self-propelled lifter can load and unload the lifter body from the truck bed by itself by performing a predetermined work procedure.

  As each jack mounting arm, for example, as in Patent Document 2, a swinging arm that can be rotated in a horizontal plane with respect to the lifting frame is used (in this case, a jack is attached to the tip of the swinging arm). Or a telescopic arm of a telescopic beam can be used as in Patent Document 1 (in this case, a jack is attached to the tip of the arm). Note that a hydraulic cylinder can be used as an operating means for both the swing arm and the retractable arm. When the lifter is transported on a truck bed, the jack mounting arm is in an arm retracted state in which each jack at the tip of each jack mounting arm is placed on the truck bed, and the lifter is loaded by itself from the truck bed. When unloading, put the jacks into the arm working state where each jack protrudes to the left and right outside of the truck bed.

  The traveling cart loading / unloading device according to claim 1 of the present invention is mounted on a self-propelled lifter capable of truck transportation having the above-described configuration, and each traveling cart loaded and transported on the loading platform of the same truck is operated by the lifter itself. It can be loaded and unloaded.

  The traveling cart loading and unloading device according to claim 1 pivotally supports a traveling cart suspension arm, to which a wire rope can be attached at the tip, so as to be horizontally rotatable by a support shaft with respect to the lifting frame. A position where the traveling carriage loaded on the truck bed can be suspended via the wire rope, and a position where the traveling carriage suspended via the wire rope is moved to the left and right outside of the truck bed. It can be horizontally rotated between. The traveling cart suspension arm can be manually rotated horizontally by an operator while the traveling cart is suspended.

  In this claim, the number of arms for suspending the traveling carriage may be at least one, but it is preferable to provide a pair (two) on the left and right of the lifting frame, and further, four traveling carriages as in claim 2 of the present application. More preferably, a suspension arm is provided. Moreover, when the traveling carriage is suspended by the traveling carriage suspension arm via the wire rope, the traveling carriage is suspended in a substantially horizontal posture. )

  The self-propelled lifter and the traveling cart loading / unloading device of the self-propelled lifter used in claim 1 have the following functions.

  First, this self-propelled lifter is transported to the place of use on a truck bed. During transportation, each traveling carriage (four) is separated from the lifter body, and each traveling carriage and lifter body are separated from the same truck carrier. To load. In this way, if each traveling vehicle is separated from the lifter body, the height of the lifter can be lowered by the amount of the traveling vehicle, so the total height (the height of the truck bed + the height of the lifter body) can be reduced when transported by truck. Can be lowered.

  And after transporting to the use site, the lifter main body and each traveling carriage are unloaded from the truck bed at the use site, and the lifter main body can be grounded on its own by itself as in Patent Document 1 or Patent Document 2, The traveling cart can also be lowered to the ground by the traveling cart loading / unloading device provided in the lifter body. In addition, the method of getting off the traveling cart by the traveling cart loading / unloading device will be described in detail in the section of the embodiment described later.

  Each traveling cart can be moved by hand on the truck bed and on the ground, and even when only one set of the traveling cart loading / unloading device is equipped, each traveling cart is sequentially moved to a predetermined position. By repeating the expansion / contraction operation of each jack and the horizontal rotation operation of the arm for hanging the traveling carriage, the four traveling carriages can be disassembled sequentially, and the lifter main body for unloading each traveling carriage on the ground by itself Each jack position can be manually pushed and moved to each jack lower end.

  When the self-propelled lifter is loaded on the truck bed after work using the self-propelled lifter, each operation may be performed in the reverse order of the above-mentioned getting-off procedure.

  As described above, when the traveling cart loading / unloading device according to claim 1 of the present application is used, when each traveling cart is loaded / unloaded from / on the truck bed, the extension operation of each jack of the lifter body is used together. This eliminates the need for a crane for loading and unloading.

Invention of Claim 2 of the Present Invention The invention of claim 2 of the present application is the traveling cart loading and unloading device according to claim 1, wherein the four traveling cart suspension arms can be horizontally rotated by the support shafts in the vicinity of the four corners of the lifting frame. It is pivotally supported.

  In the traveling cart loading and unloading apparatus according to the second aspect, the four traveling carts loaded on the truck bed can be individually suspended by the respective traveling cart suspension arms, so that each traveling cart is suspended on the truck platform. Is it necessary to manually move each trolley to adjust the position when it is suspended on a holding arm or when a trolley suspended by a trolley suspending arm is lowered from the truck bed to the ground? Or, the hand movement distance is shortened. In addition, when four traveling cart suspension arms are used in this way, the traveling carts can be loaded and unloaded simultaneously with the traveling cart suspension arms.

Invention of Claim 3 of the Present Invention The invention of claim 3 of the present application employs, in the above-mentioned claim 1 or 2, a structure in which four jack mounting arms are pivotally supported by a support shaft so as to be horizontally rotatable. The support shaft that pivotally supports the traveling cart suspension arm is arranged coaxially with the support shaft that pivotally supports the jack mounting arm.

  In the lifter used in the third aspect, a horizontal rotation type swing arm is used as each jack mounting arm to which the jack is mounted, and each swing arm is horizontally rotated by a support shaft in the vicinity of the four corners of the lifting frame. It is pivotally supported. On the other hand, a traveling cart suspension arm serving as a traveling cart loading / unloading device is also pivotally supported by a support shaft so as to be horizontally rotatable.

  In the third aspect, when one or two traveling cart suspension arms are provided, the support shaft of the traveling cart suspension arm is coaxial with the support shaft of any swing arm (jack mounting arm). When there are four traveling cart suspension arms, the respective support shafts of the travel cart suspension arms are arranged coaxially with the respective support shafts of the swing arms (jack mounting arms). .

  Thus, when the support shaft of the traveling cart suspension arm is arranged coaxially with the support shaft of the swing arm (jack mounting arm), the pivot point of the traveling cart suspension arm becomes the swing arm (jack mounting arm). ) With the jack mounting arm positioned at the arm working position (the jack protrudes outside the truck bed), and the vehicle is suspended from the end of the traveling cart suspension arm. The length of the traveling cart suspension arm for moving the cart to the position near the jack can be minimized.

Advantages of the Invention of Claim 1 The self-propelled lifter used in the invention of claim 1 is loaded on the same truck bed with each traveling carriage separated from the lifter body and transported to the place of use. The lifter body can be loaded and unloaded on the truck bed by itself at the place of use. In addition, if the truck can be transported with each traveling carriage separated from the lifter body, the total height can be lowered by the height of the traveling carriage during truck transportation. ) The length of each jack can be increased within the allowable range.

  The self-propelled lifter is equipped with the traveling cart loading / unloading device of the present application. When the lifter main body and each traveling cart are separated and transported by truck, the traveling cart unloading device automatically Can be loaded and unloaded from the truck bed.

  Therefore, if the traveling cart loading / unloading device according to claim 1 of the present application is installed, there is an effect that a dedicated crane is not required for loading / unloading each traveling cart trucked together with the lifter body onto the ground.

Advantages of the Invention of Claim 2 The invention of claim 2 of the present application is the traveling cart loading and unloading device according to claim 1, wherein the four traveling cart suspension arms are horizontally rotated by the support shafts in the vicinity of the four corners of the lifting frame. Since it is pivotally supported, the four traveling carts loaded on the truck bed can be individually suspended by each traveling cart suspension arm.

  Therefore, if there is a traveling cart loading / unloading device according to claim 2, in addition to the effect of claim 1, it is not necessary to manually move each traveling cart for position adjustment when loading / unloading each traveling cart. Or, the hand travel distance is shortened, and the position adjustment work of each traveling carriage becomes easy.In addition, each traveling carriage can be loaded and unloaded at the same time with each traveling carriage suspension arm, so the work procedure can be simplified. The number of expansion / contraction operations can be reduced.

The effect of the invention of claim 3 of the present application The invention of claim 3 of the present application employs, as the lifter body, four jack mounting arms that are pivotally supported by the respective pivots so as to be horizontally rotatable, Since the support shaft that pivotally supports the traveling cart suspension arm is arranged coaxially with the support shaft that pivotally supports the jack mounting arm, the pivot point of the travel cart suspension arm is the swing arm. It becomes the same as the rotation fulcrum of (jack mounting arm).

  Therefore, in addition to the effect of the first or second aspect, the traveling cart loading / unloading device according to claim 3 moves the traveling cart suspended from the tip of the traveling cart suspension arm to a position near the jack. This has the effect of minimizing the length of the traveling cart suspension arm.

  The embodiment of the present application will be described with reference to FIGS. 1 to 22. FIGS. 1 to 7 show the basic structure of the self-propelled lifter according to the first embodiment equipped with a traveling cart loading / unloading device. 20 shows a method of using the self-propelled lifter of the first embodiment, and FIGS. 21 to 22 show the self-propelled lifter of the second embodiment. The first embodiment of FIGS. 1 to 20 corresponds to all of claims 1 to 3 of the present application, and the second embodiment of FIGS. 21 to 22 corresponds only to claims 1 and 2 of the present application. To do.

1 to FIG. 20 In this first embodiment, for the sake of convenience, the left and right direction in the state of FIG. 1 is referred to as front and rear, and the right and left direction in the right side surface of FIG. That's it.

  The self-propelled lifter shown in FIGS. 1 to 3 has jack mounting arms 21, 21,... Installed in the vicinity of the four corners of the lifting frame 10 having a substantially rectangular plane form. .. Are attached to the tip of each of the two, and traveling carriages 3, 3,... (Four in total) are attached to the lower ends of the respective jacks 11, 11,. A power unit 5 serving as various power sources for the lifter is installed. Further, the traveling carriages 3, 3,... Are detachably attached to the lower ends of the jacks 11, 11,.

  The elevating frame 10 is constructed by assembling a frame material in a substantially rectangular plane form. In addition, the size of the plane form (FIG. 3) of the elevating frame 10 is about 5.5 to 5.6 m in the front-rear length and about 2.3 to 2.4 m in the left-right length. It can be accommodated in the interior.

  Supporting tools (hooks) 19 and 19 for supporting the load Y (FIGS. 19 to 20) are attached to appropriate positions of the elevating frame 10.

  In the first embodiment, the jacks 11, 11,... Employ a telescopic boom type composed of a three-stage boom (lower boom 12, middle boom 13, upper boom 14). Each jack 11 incorporates a telescopic hydraulic cylinder (not shown).

  By the way, the self-propelled lifter according to the first embodiment is adapted to be able to get on and off the truck bed 81 by itself as shown in FIGS. 8 to 20 (details will be described later). In the first embodiment, In order to displace each jack 11, 11,... Between the state (FIGS. 8 and 9) that fits on the truck bed 81 and the state that straddles the left and right edges of the truck bed 81 (FIGS. 10 to 12). The jacks 11, 11,... Are attached to the tip ends of jack mounting arms 21, 21,... Having a predetermined length (for example, 1.4 to 1.5 m).

  In the first embodiment, the jack mounting arms 21, 21,... Are pivotally supported by the support shafts 22, 22,. It is installed in a state to obtain. The support shafts 22, 22,... Of the jack mounting arms 21, 21,... Are fixed to the elevating frame 10 in a vertical posture as shown in FIG. The base end portion of the jack mounting arm 21 can be rotated.

  In the first embodiment, a jack mounting arm 21 that can be rotated (swinged) in a horizontal plane is used. In the following description, the jack mounting arm in the first embodiment is used as a swinging arm. That's it.

  Each of the swing arms (jack mounting arms) 21, 21,... Is moved by a swing cylinder (hydraulic cylinder) 23 to a position (arm storage position A) directed to the front and rear in the plan view of FIG. It can be rotated within an angle range of 90 ° with the position pointing outward (arm working position B). In the loading / unloading process described later, the swing arms 21, 21... May be directed to an arm tilt position C that is tilted from the arm storage position A to the left and right sides by an angle of about 55 °. In the plan view of FIG. 3, when each jack is at each position indicated by reference numeral 11 or 11 ″, it is a position where the truck can be straddled in the width direction, and when each jack is at a position indicated by reference numeral 11 ′. Is the position that fits on the truck bed.

  In the state where each swing arm 21, 21... Is directed outward in the front-rear direction (arm storage position A), as shown in FIGS. 8 to 9, all the jacks 11, 11. In the state where the swinging arms 21, 21,... Are oriented obliquely (arm inclined position C), the distance between the inner surfaces of the left and right jacks 11, 11 is as shown in FIGS. When the swing arms 21, 21,... Are directed outward in the left and right directions (arm working position B), as shown in FIGS. 13 to 20, The inner surface spacing is considerably wider than the width of the truck bed 81.

  Two auxiliary legs 25, 25,... Are attached to the front and rear positions of the elevating frame 10 so as to be movable up and down at predetermined intervals on the left and right. Each of the auxiliary legs 25, 25,... Is used when the lifter is moved on and off by itself with respect to the truck bed, and can be slid up and down with respect to the lifting frame 10 and fixed at a desired position ( For example, it can be pinned). Each of the auxiliary legs 25, 25,... Is used only when the lifter gets on and off by itself, but can be removed from the lifting frame 10 except when necessary. The function of each of the auxiliary legs 25, 25,... Will be described later (the description of the lifter getting-on / off procedure described later is incorporated).

  As shown in FIGS. 4 to 6, each traveling carriage 3, 3,... Has a jack connection base 31 that connects a lower end portion of the jack 11 (a lower end portion of the lower boom 12) and a wheel mounting base to which wheels 33 are attached. 32 is used that is horizontally combined. A total of three wheels 33 are used for one traveling carriage 3 on one side and one on the other side (each cantilever supported), so that each traveling carriage 3 can stand on its own. In addition, the number of wheels of the traveling carriage 3 may be four wheels used in the front, rear, left, and right, but in the case of three wheels as in this embodiment, all the wheels (three wheels) are sure even if the ground is uneven. The problem that any one wheel lifts off the ground as in the case of four wheels is eliminated.

  Each of the traveling carts 3 is configured such that one wheel 33 on one side is driven by a traveling drive device 34 so that the traveling carts 3, 3,. It has become. In this embodiment, the traveling drive device 34 of the traveling carriage 3 is such that the wheel 33 is driven by a hydraulic motor. The tip of the hydraulic hose to the hydraulic motor 34 is connected to the hydraulic motor 34. It is removable with respect to. In another embodiment, an electric motor may be used as the travel drive means 34.

  A bearing is interposed between the jack connection base 31 and the wheel mounting base 32 in each traveling carriage 3, 3,..., And the wheel mounting base 32 is jacked in a state where the wheel 33 is levitated from the ground as will be described later. The connection base 31 can be rotated horizontally by human power.

  Each of the traveling carriages 3, 3,... Is self-propelled and therefore uses a wheel 33 having a considerable diameter (for example, 40 cm). Therefore, the traveling carriage 3 has a considerable height. (Overall height is about 50cm).

  Further, each traveling carriage 3, 3,... Is provided with jacks 4, 4,... At the center part of the jack connection base 31 (rotation center part of the wheel mounting base 32). In the contracted state, the jacks 4, 4,... Are in the extended state, with the grounding plate 41 positioned above the lower surface of the wheel 33 as shown by the solid line in FIG. 4 and FIG. 4 and 5, the ground plate 41 protrudes slightly below the lower surface of the wheel 33 so that the wheel 33 can be lifted from the ground. Each of the jacks 4, 4,... Has a jack-up capability that allows the entire lifter to float while the load (heavy object) Y is supported by the lifter as shown in FIG. Each of the jacks 4, 4... Uses a hydraulic cylinder, and hydraulic oil from the power unit 5 is also supplied to the hydraulic cylinder. Note that the tip of the hydraulic hose to the jack (hydraulic cylinder) 4 is also detachable from the jack 4.

  As shown in FIGS. 4 and 5, each of the traveling carriages 3, 3... Can attach a jack connection base 31 to the lower end of the jack 11 (the lower end of the lower boom 12) in a detachable manner. ing. In this embodiment, in order to align the lower end of the lower boom 12 and the jack connection base 31, a plurality of pin holes 17 are provided near the outer periphery of the ground plate 16 at the lower end of the lower boom 12, while the jack connection base is provided. A plurality of projecting pins 36 are provided on the upper surface of 31 to be fitted into the pin holes 17. Further, in this embodiment, in order to fix the ground plate 16 of the lower boom 12 to the upper surface of the jack connection base 31, a plurality of stoppers 37 for pressing the outer peripheral edge of the ground plate 16 are provided on the upper surface of the jack connection base 31. Yes. Each stopper 37 is integrally formed with a pressing piece 38 projecting sideways at the upper end portion, and can be rotated horizontally by loosening the locking bolt. When the presser piece 38 is in the outward retracted position as shown in FIG. 4, the ground plate 16 of the lower boom 12 can be accommodated between the stoppers 37 from above. Are rotated on the upper surface of the jack connection base 31 to rotate the stoppers 37 so that the presser pieces 37 face the inward holding positions shown in FIG. 5, and then the grounding plate 16 is jacked by tightening the fixing bolts. It can be fixed on the connecting table 31. As a means for fixing the ground plate 16 of the lower boom 12 on the jack connection base 31, the vicinity of the outer periphery of the ground plate 16 can be directly bolted to the upper surface of the jack connection base 31 (in this case, the bolt is removed). Thus, the ground plate 16 can be separated from the jack connection base 31).

  As shown in FIGS. 4 and 5, the grounding plate 16 of the lower boom 12 is pivotally supported by the pins 18 </ b> A and 18 </ b> B from the front and rear, left and right with respect to the lower end portion of the lower boom 12, and can tilt forward and backward and left and right. It is like that.

  A bracket 35 (FIGS. 4 to 6) for connecting a lower side of a wire rope 60 (FIG. 7) for suspending a traveling carriage, which will be described later, is attached to the outer peripheral portion of each wheel carriage 32. It has been. The bracket 35 is provided at a plurality of locations (four locations in the illustrated example) in order to maintain the traveling cart 3 in a horizontal posture when the traveling cart 3 is suspended by the wire rope 60. When suspending 3, each of the three branch ropes provided at the lower part of the wire rope 60 with respect to the three brackets 35, 35, 35 capable of maintaining the weight balance, is provided with the respective locking devices 60 b, 60 b, 60 b. (FIG. 7) may be connected. As the wire rope 60 for suspending the traveling carriage 3, any wire rope 60 can be adopted as long as the traveling carriage 3 can be suspended in a horizontal posture.

  In addition, on the wheel mounting base 32 of each traveling carriage 3, 3,..., Engaging pins 39 are provided upright at four locations on the outer peripheral portion for locking the ends of the connecting tool 9 described later.

  The power unit 5 is a power source for the self-propelled lifter and is installed on the elevating frame 10. As shown in FIG. 3, the power unit 5 includes an engine 51, a hydraulic pump 52, and a hydraulic oil tank 53 as a hydraulic pressure generator, and a battery 54 and a fuel tank 55 as related parts.

  By the way, when the power unit 5 is installed on the lifting frame 10, the lifting frame 10 is placed on the upper boom 14 of each jack 11 in order to prevent the power unit 5 from increasing the overall height of the lifter body 1. Is fixed at a position that is stepped down by the maximum height range of the power unit 5 (the maximum height of the power unit 5 and the upper surface of the upper boom 14 of each jack 11 are the same height).

  The power unit 5 mainly supplies power (hydraulic fluid) to the hydraulic cylinders of the jacks 11. The power units 5 are each of the swing cylinders 23 for the swing arms 21 and the travel drive devices (hydraulic motors) of the travel carts 3. ) 34 and the jack 4 are supplied with hydraulic oil, respectively. Since the distance of the traveling carriage 3 from the power unit 5 changes due to the expansion and contraction of the jack 11, the hydraulic hoses (not shown) are respectively connected to the hydraulic motor 34 (and the hydraulic cylinder of the jack 4) of the traveling carriage 3 via the hose reels. It is extended. Further, since each traveling carriage 3 is detachable, the tip of each hydraulic hose is detachably attached to each hydraulic motor of the traveling drive device 34 and each joint portion of the jack 4.

  The various drive portions of the self-propelled lifter can be controlled to start and stop by remote operation from the ground.

  In this lifter, the upper part (upper boom 14) of each jack 11 is firmly connected by the lifting frame 10, but the lower part (lower boom 12) of the jack 11 is not particularly connected (the strength in the tilting direction is weak). ). Therefore, in this embodiment, the traveling carriages 3 attached to the lower end portions of the jacks 11 can be connected to each other by four connecting tools 9 on the front, rear, left and right.

  Each of the connecting tools 9 can be adjusted in length, and each end of the connecting tool 9 can be freely engaged with and disengaged from an engaging pin 39 erected on the jack connecting base 31 of each traveling carriage 3. It can be engaged. In addition, the both ends of the connection tool 9 have screw portions in opposite directions on the left and right sides, and the connection tool 9 can be rotated to finely adjust the overall length.

  The self-propelled lifter according to the first embodiment can be moved on and off the loading platform 81 of the truck 8 by itself as shown in FIGS. A traveling cart loading / unloading device 6 for loading / unloading each traveling cart 3 loaded on the loading platform 81 from the truck loading platform 81 is provided.

  As shown in FIGS. 1 to 3 and 7, the traveling cart loading / unloading device 6 of this embodiment is configured so that each traveling cart suspension arm 61 is pivotally supported with respect to the lifting frame 10 in the vicinity of the four corners of the lifting frame 10. The upper end portion 60a of the wire rope 60 can be detachably connected to the distal end portion 61a (FIG. 7) of each traveling carriage suspension arm 61. is there.

  Each traveling cart suspension arm 61 has a length of about 150 cm. As shown in FIG. 7, each traveling cart suspension arm 61 pivotally supports the base end portion of the traveling cart suspension arm 61 by a support shaft 62 so as to be horizontally rotatable. As shown in FIG. 7, the support shaft 62 of the traveling cart suspension arm 61 is fixed to the elevating frame 10 in a vertical posture, and the traveling cart suspension arm 61 is connected to the support shaft 62 via a bearing 62 a. The base end part of can be rotated.

  Further, in the first embodiment, the support shaft 62 of each traveling carriage suspension arm 61 and the support shaft 22 of each swing arm 21 are arranged such that the swing arm side support shaft 22 is on the upper side as shown in FIG. It arrange | positions on the up-and-down axis | shaft coaxial in the state which the arm side support shaft 62 for driving | running | working cart suspension is below. The two support shafts 22 and 62 are integrated by passing one bolt 71 through each central hole and screwing and tightening nuts 72 and 73 to the upper and lower ends of the bolt 71, respectively. .

  As shown in FIG. 7, the upper end portion 60 a of the wire rope 60 can be detachably connected to the distal end portion 61 a of each traveling cart suspension arm 61 by a connecting pin 64.

  The wire rope 60 is for suspending the traveling carriage 3 from the distal end portion 61a of the traveling carriage suspension arm 61 as described later (FIGS. 10 to 12), and has a length of about 2 to 3 m. doing. Further, the lower end side of the wire rope 60 is branched into three as shown in FIG. 7, and a locking tool (which can be locked to each bracket 35 of the traveling carriage 3 at the tip of each of the three branched ropes). In the illustrated example, hooks 60b, 60b, 60b are attached.

  Next, with reference to FIGS. 8-20, the work procedure for loading / unloading the self-propelled lifter with the traveling cart loading / unloading device of the first embodiment from the truck bed 81 will be described. 8-20, each (A) figure is a figure (the figure equivalent to FIG. 1) which made the left side of the lifter the front, and each (B) figure is a right side view (figure of each (A) figure. 2 equivalent diagram).

  In the self-propelled lifter of the first embodiment, as shown in FIG. 8, each traveling carriage 3 is separated from the lifter body 1, and the lifter body 1 and each traveling carriage 3 are loaded on the loading platform 81 of the same truck 8. Then transported. At this time, each swing arm 21 is in the arm retracted position A (FIG. 3), and each traveling carriage suspension arm 61 is also in the retracted position facing in the front-rear direction. Further, each traveling carriage 3 may be positioned in the vicinity of a position immediately below the tip of each swing arm 21 on the truck bed 81.

  By the way, when a truck is transported on a public road, there is a height limit (3.8 m) according to the road transport vehicle law. However, as shown in FIG. 8, each truck 3 is removed from the lifter body 1 on the truck bed 81. If it is loaded, it can be transported within the range of height limit (3.8m) even if it is a self-propelled lifter. In addition, when each traveling carriage 3 is removed in this way, the overall height of the lifter can be lowered by the height of the traveling carriage 3, but the height of the lifter body 1 in the state where each jack 11 is reduced to the minimum. Can be set high up to the vicinity of the permissible limit, and as a result, the length of the single boom of each jack 11 can be increased, and the lifting stroke of the lifting frame 10 (reference S in FIGS. 1 and 2) can be increased.

  After transporting to the site of use in the state of FIG. 8, the lifter is assembled and unloaded at the site of use. When the lifter is assembled and unloaded, the power unit 5 is operated so that hydraulic oil can be supplied.

  Then, as shown in FIGS. 9A and 9B, each jack 11 is slightly extended on the truck bed 81 at the site of use and the lifter body 1 is supported by each jack 11. ) The auxiliary legs 25 are lowered onto the truck bed 81 until they come into contact with each other and fixed (pin fixed).

  Next, as shown in FIGS. 10A and 10B, each jack 11 is contracted to separate the lower end of the jack from the truck bed 81, and then each swing cylinder 23 is extended to each swing arm. 21 is horizontally rotated to a position (arm inclination position C in FIG. 3) facing diagonally outward in the left and right directions. Thus, initially, each swing arm 21 is rotated to the left and right diagonally outward positions (arm tilt position C in FIG. 3). The reason for this is as follows. This is to prevent the jack from getting in the way of hanging the traveling carriage 3 suspended in the vicinity of the maximum projecting position of the jack (arm working position B in FIG. 3). In the state shown in FIG. 10, the lifter body 1 is supported on the truck bed 81 by four auxiliary legs 25. Before and after this operation, the upper end portion 60a of the wire rope 60 is connected to the distal end portion 60a (FIG. 7) of each traveling cart suspension arm 61, and each locking tool 60b at the distal end of the branch rope below the wire rope. (Three) are connected to each bracket 35 (three places) of the traveling carriage 3 respectively. The connection by the wire rope 60 is performed for each of the four traveling carriages 3.

  Next, as shown in FIGS. 11A and 11B, after each jack 11 is extended and grounded, each jack 11 is further extended to move the elevating frame 10 upward, and each traveling carriage 3 is tracked. Each traveling carriage is suspended by the traveling carriage suspension arm 61 on the loading platform 81. In this state, each traveling carriage 3 floats slightly above the top surface of the truck bed 81. Then, in the state where each traveling carriage 3 is suspended, each traveling carriage suspension arm 61 is manually rotated together with the traveling carriage 3 to an outer 90 ° position (arm work position B in FIG. 3). At this time, the position of the left and right outer sides of the truck bed 81 as shown by the chain lines (reference numerals 61 'and 3') in FIGS. It has moved to (arm operation position B in FIG. 3).

  Next, as shown in FIGS. 12A and 12B, each jack 11 is reduced until each traveling carriage 3 suspended by each traveling carriage suspension arm 61 comes into contact with each traveling carriage 3. After grounding, each wire rope 60 is removed. It should be noted that the traveling carts 3 lowered to the ground are accurately assembled positions (each pin hole 17 of the ground plate 16 is on the traveling cart 3 side) for assembling to the lower end of each jack 11 as will be described later (FIG. 13). In most cases, the position is shifted from the position corresponding to each of the projecting pins 36. When the traveling carts 3 are heavy and difficult to adjust by hand, the traveling carts 3 lowered to the ground are adjusted to the correct assembly position (centered). Each operation shown in 15 is performed.

  That is, as shown in FIGS. 13A and 13B, each jack 11 is reduced, and the four auxiliary legs 25 are grounded on the truck bed 81 to support the lifter body 1 by the auxiliary legs 25. After each jack 11 is reduced to a position where the lower end is above the upper surface of the traveling carriage 3 on the ground, each swing cylinder 23 is extended to move each swing arm 21 to the left and right outer 90 ° positions (see FIG. 3). Rotate to arm working position B). In this state, each jack 11 is located in the vicinity immediately above each traveling carriage 3 that has been lowered to the ground first.

  Next, as shown in FIGS. 14 (A) and 14 (B), the outer peripheral portion (for example, using the pin hole 17) of the ground plate 16 of each jack 11 and each traveling carriage in a state where the reduction allowance is left in each jack 11. 3 brackets 35 are connected by a plurality of (three in the illustrated example) short ropes 70. Each of these (three) short ropes 70 is of a length that allows the traveling carriage 3 to be in a substantially horizontal posture when the traveling carriage 3 is lifted (when suspended at the three points shown in FIG. 15). Further, when the traveling position of the short rope 70 is raised, the protruding pins 36 (FIG. 4) on the traveling carriage 3 side correspond to the pin holes 17 (FIG. 4) of the grounding plate 16 of the jack. It is set so that it can be positioned at a position.

  Next, as shown in FIGS. 15A and 15B, from the state of FIG. 14, each jack 11 is reduced and each traveling carriage 3 is suspended by a short rope 70. In this state, each projecting pin 36 (FIG. 4) on each traveling carriage 3 side is in a position accurately corresponding to each pin hole 17 (FIG. 4) of the ground plate 16 of each jack 11. Then, each jack 11 is extended from the state of FIG. 15 to ground each traveling carriage 3 and each short and small rope 70 is removed.

  Next, as shown in FIGS. 16 (A) and 16 (B), each jack 11 is further extended, and each grounding plate 16 is joined to the upper surface of each traveling carriage 3. At this time, as shown in FIG. Each pin hole 17 of the ground plate 16 is fitted to each projection pin 36 on the traveling carriage 3 side. Then, after the ground plate 16 is joined to the upper surface of the traveling carriage 3, the assembly operation of the traveling carriage 3 is completed if the outer peripheral edge portion of the ground plate 16 is pressed by each stopper 37 as shown in FIG. To do. In this manner, in the assembled state of the traveling carriage 3, the lifter body 1 is supported by the four traveling carriages 3 and the auxiliary legs 25 are used up. Or may be removed from the lifting frame 10 (see FIG. 17).

  When the position adjustment of the traveling carriage 3 on the ground can be performed relatively easily by a manual pushing operation, the centering work by the short rope 70 in FIGS. 14 to 15 is omitted, and the traveling carriage 3 is adjusted by the pushing. You may make it do.

  Next, as shown in FIGS. 17A and 17B, the jacks 11 are greatly extended from the state of FIG. 16 to move the elevating frame 10 up to a height at which the track can be extracted.

  Next, as shown in FIGS. 18A and 18B, the track is extracted from the lifter. Before and after this truck extraction, the two traveling carriages 3 and 3 (a pair of left and right) located in the front and rear are connected by a connecting tool 9. At this time, the left and right traveling carriages are not yet connected by the connecting tool.

  Next, as shown in FIGS. 19 (A) and 19 (B), the truck 8 loaded with the luggage (large heavy article) Y is entered into the space in the lifter, and a wire rope is attached to the luggage Y on the truck bed 81. It ties and hangs on each support tool 19 and 19. Thereafter, each jack 11 is extended to lift the load Y, and the empty truck 8 is moved forward and removed from the lifter portion.

  Next, as shown in FIGS. 20A and 20B, the two traveling carriages 3, 3 (a pair of front and rear) located on the left and right are connected by a connecting tool 9. In this state, the four traveling carriages 3 are connected in a quadrangular shape with the four connecting tools 9, and the lower side of each jack 11 is also reinforced. 20A and 20B (the state where the luggage Y is lifted from the ground), the lifter can be moved together with the luggage Y to the target position by each traveling carriage 3.

  Further, in order to change (correct) the travel direction of the lifter during the movement, the jack 4 (FIG. 5) provided on each traveling carriage 3 is extended (the jack grounding plate 41 is connected as shown by the chain line in FIG. 5). After touching down, the lifter is pushed up), and all the wheels 33 of each traveling carriage 3 are lifted off the ground. In this state, since no load is applied to the wheel mounting base 32 of the traveling carriage 3, the wheel mounting base 32 can be horizontally rotated with respect to the jack connection base 31 by human power. Then, after each wheel 33 is directed in a desired direction, each jack 4 can be contracted to ground each wheel 33 and the travel drive means 34 can cause the lifter to travel in the desired direction.

  Then, the baggage Y can be placed at a predetermined position by carrying the baggage Y to a predetermined position and reducing each jack 11 there. Thereafter, the lifter can be moved from the luggage Y by removing the wire rope from the luggage Y and detaching the connecting tool 9 located at the front and rear from each traveling carriage 3.

  In order to load an empty lifter onto the truck bed 81, the following procedure is used. That is, the jacks 11 are extended to move the elevating frame 10 upward (state shown in FIG. 18) → the loading platform 81 of the truck 8 enters the lower space of the elevating frame 10 (state shown in FIG. 17) → the jacks 11 are The auxiliary legs 25 are reduced to some extent, and the four auxiliary legs 25 are attached to the lifting frame 10 at a predetermined height. Further, the jacks 11 are further reduced so that the lower ends of the auxiliary legs 25 are brought into contact with the upper surface of the truck bed 81 and the auxiliary legs. The lifter is supported at 25 (state shown in FIG. 16) → each traveling carriage 3 is removed from the lower end of the jack 11 (state shown in FIG. 13) → the respective swing cylinders 23 are slightly reduced to tilt each swing arm 21 diagonally. After rotating to a position facing the direction (arm tilt position C in FIG. 3), each jack 11 is extended until it touches the ground (each jack is in the state shown in FIG. 12). That The arm tip and the traveling carriage 3 are connected to each other by a suspension wire rope 60 (the state shown in FIG. 12). Each jack 11 is extended to extend each traveling carriage suspension arm 61. Each of the traveling carts 3 suspended from the upper side of the truck carrier 81 is lifted to a position above the upper surface of the truck carrier 81 (as shown by a chain line in FIG. 11) → Each traveling cart suspension arm 61 is rotated together with the traveling cart 3 onto the truck carrier 81. Then, each jack 11 is reduced and each traveling carriage 3 is placed on the truck bed 81, and each jack 11 is further reduced and lifted until the lower end of the jack is positioned higher than the upper surface of the truck bed 81 (at this time the lifter The main body 1 is supported by the auxiliary legs 25 and is in the state shown in FIG. 10) → After that, the respective swing cylinders 23 are contracted and the respective swing arms 21 are directed to the respective front and rear sides (the arm case in FIG. 3). When is positioned A) rotates to can stow lifter body 1 and the traveling carriage 3 as shown in FIG. 8 on the bed 81 of the same track 8.

  Thus, in the self-propelled lifter of this embodiment, the lifter body 1 can be loaded onto and unloaded from the truck bed 81 by itself, and each traveling carriage 3 can also be moved from the truck bed 81 by using the traveling carriage loading / unloading device 6 together. You can get on and off. Therefore, in the self-propelled lifter equipped with the traveling cart loading / unloading device of the first embodiment, even if the lifter main body 1 and each traveling cart 3 are separated and transported by truck, each of the self-propelled lifters is independent of the truck loading platform 81. You can get on and off (without using a separate crane).

  In the first embodiment, since the traveling cart loading / unloading devices 6 are provided in the vicinity of the four corners of the lifting frame 10, the four traveling carts 3 can be lowered to the positions near the jacks 11 to adjust the position. Therefore, it is not necessary to manually move each traveling carriage 3 or the distance of the pushing movement is shortened, and the four traveling carriages 3 can be simultaneously loaded and unloaded by each traveling carriage loading / unloading device 6.

  Further, the lifter body 1 used in the first embodiment uses a swing arm as each jack mounting arm 21, and the support shaft 22 of each swing arm 21 and each traveling cart suspension arm 61. Since the support shaft 62 is coaxially arranged, the traveling carriage suspension arm 61 for moving the traveling carriage 3 suspended from the tip of the traveling carriage suspension arm 61 to a position near the jack 3. Can be minimized.

The second embodiment shown in FIGS. 21 to 22 In the second embodiment shown in FIGS. 21 to 22, as the lifter body 1, the front and rear arms (becomes jack mounting arms) are respectively provided on the front and rear portions of the substantially rectangular lifting frame 10. A pair of telescopic beams 20 (a total of four) 21A projecting and retracting in the left and right outward directions is attached, and a jack 11 is attached to the tip of each projecting arm 21A of each telescopic beam 20. The retractable arm 21A of the telescopic beam 20 is retracted by a hydraulic cylinder built in the beam.

  In the lifter main body 1 of the second embodiment, the jacks 11, 11,... Are stored on the truck bed 81 in a state where the retractable arms 21A are fully retracted as shown by the solid lines in FIGS. When the arm retracting position is reached and each protruding arm 21A fully protrudes as shown by the chain line (reference 21A '), the arm working position in which each jack protrudes to the position 11' (the left and right jacks 11, 11 are tracked) (Position across the loading platform 81).

  In addition, since the other structure of the lifter main body 1 and the structure of each traveling trolley 3 are the same as the thing of the said 1st Example, description of the 1st Example is used.

  In the self-propelled lifter of the second embodiment, each traveling carriage 3 can be attached to and detached from the lifter main body 1 (each jack 11), and the lifter main body 1 is the same as in the first embodiment. It is possible to get on and off the truck bed 81 by itself.

  The self-propelled lifter of the second embodiment is also equipped with a traveling cart loading / unloading device 6 for loading / unloading each traveling cart 3 by itself. The basic configuration of each traveling cart loading / unloading device 6 is the same as that of the first embodiment, and the traveling cart suspension arms 61 are pivotally supported by the support shafts 62 in the vicinity of the four corners of the lifting frame 10. . Each traveling carriage suspension arm 61 can be horizontally rotated between a retracted position facing in the front-rear direction and a position rotated to a left-right outward angle of 90 ° (position 61 ′). It has become.

  And also in each traveling trolley loading / unloading device 6 of the second embodiment, the wire rope 60 is suspended from the tip of the traveling trolley suspension arm 61, and each traveling trolley 3 is connected via the wire rope 60. The traveling carriage suspension arm 61 can be horizontally rotated in the state where the traveling carriage is suspended.

It is a side view of the self-propelled lifter provided with the traveling cart loading / unloading device of the embodiment of the present application. It is a right view of the self-propelled lifter of FIG. It is a top view of the self-propelled lifter of FIG. It is an enlarged view of the separation state of the traveling carriage in the self-propelled lifter of FIG. FIG. 5 is an assembly state diagram of FIG. 4. FIG. 5 is a plan view of the traveling carriage of FIG. 4. FIG. 7 is an enlarged sectional view taken along line VII-VII in FIG. 3. It is a truck loading platform loading state figure of the lifter main part and traveling cart of Drawing 1. It is a state change figure at the time of the lifter unloading from FIG. It is a state change figure at the time of the lifter unloading from FIG. It is explanatory drawing of the traveling cart loading / unloading from FIG. It is a state change figure from FIG. It is a state change figure from FIG. It is explanatory drawing of the traveling cart centering method from FIG. It is a state change figure from FIG. It is the state figure which connected the jack to the traveling trolley from FIG. It is a state change figure from FIG. FIG. 18 is a state diagram in which a track is withdrawn from the state of FIG. 17. It is the state figure which made the load carrying truck approach into the lifter from FIG. It is driving | running explanatory drawing of the lifter which received the load. It is a top view (equivalent figure of FIG. 3) of the self-propelled lifter of another structure provided with the traveling cart loading / unloading device of an Example of this application. It is the state figure which loaded the self-propelled lifter of Drawing 21 on the truck. It is explanatory drawing of a well-known lifter. It is a state change figure from FIG.

Explanation of symbols

  1 is a lifter body, 3 is a traveling cart, 5 is a power unit, 6 is a traveling cart loading / unloading device, 10 is a lifting frame, 11 is a jack, 21 is a jack mounting arm (swinging arm), and 21A is a jack mounting arm (extruding arm) , 22 is a support shaft, 25 is an auxiliary leg, 60 is a wire rope, 61 is an arm for suspending a traveling carriage, 62 is a support shaft, and 81 is a truck bed.

Claims (3)

Four jack mounting arms (21, 21A) each having a jack (11) attached to the tip are respectively installed near the four corners of a lifting frame (10) having a substantially rectangular planar shape. A self-propelled lifter capable of detachably attaching a traveling carriage (3) to each lower part, wherein each of the jack attachment arms (21, 21A) is mounted in a state where the lifter is loaded on a truck bed (81). However, it is possible to displace between the arm storing position for storing each jack (11) on the truck bed (81) and the arm working position for protruding each jack (11) to the left and right outside of the truck bed (81). In a self-propelled lifter that can be loaded and unloaded by itself by allowing the lifter body (1) to be loaded and unloaded on the truck bed (81) by itself.
A traveling cart suspension arm (61) to which a wire rope (60) can be attached at the tip is pivotally supported by a support shaft (62) with respect to the lifting frame (10) so as to be horizontally rotatable. The carriage suspension arm (61) has a position where the traveling carriage (3) loaded on the truck bed (81) can be suspended via the wire rope (60) and the wire rope (60). The suspended traveling carriage (3) can be horizontally rotated with respect to the position where it is moved to the left and right outside of the truck bed (81).
A self-propelled lifter traveling cart loading / unloading device that can be loaded and unloaded by itself.   Self-propelled characterized in that the four traveling cart suspension arms (61) are pivotally supported by the support shafts (62) in the vicinity of the four corners of the elevating frame (10). Unloading equipment for self-propelled lifters that can be loaded and unloaded at the same time.   3. The lifter main body (1) according to claim 1, wherein four jack mounting arms (21) are pivotally supported by respective pivots (22) so as to be horizontally rotatable, and are used for hanging a traveling carriage. The support shaft (62) pivotally supporting the arm (61) is arranged coaxially with the support shaft (22) pivotally supporting the jack mounting arm (21). Self-propelled lifter traveling cart loading and unloading device that can be lowered.

Images