JPH0318480Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention is based on a movable cart with multi-tiered shelves that is carried in and placed on the lifting platform at the lowest position, and built into the main body of the device. The present invention relates to a cart lifting device in which a lifting platform and a cart are moved up and down by a lifting mechanism.In particular, it relates to a cart fixing release device.

(Prior Art) Conventionally, this type of cart elevating device has been used, for example, as described in Japanese Patent Application No. 16231/1983 filed by the applicant of the present application. Some carts transport and automatically store a predetermined number of bats placed thereon, and then raise the cart one after another to store the bats on each shelf.

(Problem to be solved by the invention) However, with such a conventional cart lifting device, it is necessary to securely fix the cart in a predetermined position on the lifting platform in order to ensure the transfer of butts to each shelf. Although it is necessary to secure the cart so that it does not come off the platform due to vibrations generated when the cart is moved up and down, on the other hand, if there is resistance when removing the cart from the platform after work is completed, it must be stored on each shelf. There is also the problem that the products on the raised and lowered bats may fall, and furthermore, it is very dangerous if the cart is accidentally moved while the lifting platform is moving up and down.

Therefore, as disclosed in, for example, Japanese Utility Model Publication No. 57-24800 and Japanese Utility Model Application Publication No. 57-162290, a wheel stopper automatically protrudes and fixes the wheels when the lifting platform is raised or lowered, and the lifting platform is It is conceivable that the stopper is automatically retracted and released when the stopper is lowered to the lowest position.

However, with these items, the wheel stops are released when the platform is at its lowest position, so if you try to store the butts on the shelf in this state, there is a risk that the cart will move and be removed from the platform. This is dangerous, and in order to prevent this, the cart itself must be provided with wheel fixing means, which increases costs.

The present invention has been developed in view of the conventional circumstances, and an object of the present invention is to enable the cart to be arbitrarily moved and fixed on a lifting platform at the lowest position without providing wheel fixing means to the cart itself.

(Means for Solving the Problems) As a technical means taken by the present invention to solve the above problems, a latching arm that is constantly biased in the engagement direction is actuated on the lifting platform side by the collision of the carried cart. A fixing mechanism that engages in a detachable manner with a locking arm, and a release mechanism in which a movable member mechanically linked to the latching arm is movably arranged at the bottom of the lifting platform, and the movable member and the movable member are provided on the device main body side. An operating mechanism in which operating rods are movably arranged at corresponding positions, and an operating mechanism that mechanically cooperates with the operating rods to operate the operating rods are provided. It is characterized in that it is configured so that the operation of the operating rod is transmitted to the movable member by engaging only when it is in the position.

(Function) According to the technical means of the present invention, when the cart is carried into a predetermined position on the lifting platform at the lowest position, it hits the fixing mechanism and the latching arm operates in the opposite engagement direction. The cart is fixed by returning in the engagement direction with the biasing force of the arm, and even if the operator accidentally operates the operating mechanism while the lifting platform is moving up and down, the movement of the operating rod will not be transmitted to the movable member and will not be latched. The arm does not operate, and when the operating mechanism is operated at the lowest position, the movement of the operating rod is transmitted to the movable member and the locking arm is moved in the anti-engagement direction, thereby releasing the fixing mechanism and lifting the cart. It is possible to move.

(Example) An example of the present invention will be described below based on the drawings.

Fig. 1 is a vertical sectional side view of the main part of a cart lifting device equipped with the cart fixing release device of the present invention, and Fig. 2 is a longitudinal sectional plan view of the main part of the above embodiment, showing the operating mechanism attached to the main body of the lifting device. A diagram showing the configuration of a release mechanism and a fixing mechanism attached to the lifting platform, Figures 3 to 6 are explanatory diagrams of the operation of the above embodiment, and Figure 7 is a diagram showing the automatic delivery of a predetermined number of wrapped products using the above embodiment. FIG. 8 is a plan view showing an automatic product conveying device that places products on a vat and automatically stores the vats on a shelf of a cart; FIG.
The figure shows a front view of the same. As shown in Figures 7 and 8, the overall structure of the automatic product transport device includes a roller conveyor 12 that sequentially transports packaged products.
a batt supply device 14 that sequentially supplies batts on which a predetermined number of packaged products are placed; and a batt placement device 16 that sequentially takes out the batts A stored in the batt feeding device 14 one by one to a predetermined position. ,
A vat transfer device 18 that places a predetermined number of packages from the roller conveyor 12 on the upper surface of the vat A taken out at the predetermined position and then transfers the vat A to a cart shelf, and a vat transfer device 18 that stores the vats on each cart shelf. Each device includes a roller conveyor 12 in the upper part of the drawing (FIG. 7), a batt transfer device 18, and a batt transfer device in the lower part of the drawing (Fig. Cart elevating devices 10 are disposed on the left and right (in the drawing) with 18 in between, and a batt mounting device 16 is disposed above the batt supplying device 14 (above the batt feeding device 14 in the drawing in FIG. 8). A pusher 12a is provided above the terminal end of the roller conveyor 12 to transfer a predetermined number of packaged products to a vat A, and a vat mount is provided on the upper surface of the vat supply device 14 so as to be openable and closable. The batt A that has been supplied to the lower part of the batt mount of the batt supply device 14 is removed when the batt mount is opened, and the suction pad 16a of the batt mount device picks up and takes out one batt A, and as the batt mount is closed, the batt A is Place bat A on the top of the platform. A predetermined number of packages are transferred from the roller conveyor 12 to the upper surface of the vat A by a pusher 12a, and are transferred to the upper surface of a vat transfer device 18 by a pusher 14a provided at the lower part of the roller conveyor 12. A pusher 18a is disposed on the upper surface of the butt transfer device 18, and a pusher 18a is arranged on the upper surface of the butt transfer device 18, and the pusher 18a is used to push the butt B onto the cart shelf b of the cart B which has been carried in advance to the elevating table 30 of the cart elevating device 10 disposed at both left and right ends of the butt transfer device 18. Push the butt A on the upper surface of the transfer device 18 to the pusher 18a.
Store them in sequence. Repeat the above actions,
The cart lifting platform 30 is raised one by one for each cart shelf b, and the bats A are stored in all the cart shelves b.
The detailed structure of the batt supply device 14 and batt placement device 16 can be found in Utility Model Application No. 59-53120, Utility Model Application No. 59-53121, and Utility Model Application No. 59-53121 filed by the applicant of the present application.
It is described in No. 59-52504.

Next, regarding the cart lifting device 10, see Figures 1 and 2.
This will be explained using figures. The cart lifting device 10 includes a device main body 20, a lifting platform 30, and a lifting mechanism 40.

The device main body 20 has a rectangular cross-section with a hollow shape formed into a rectangular frame (not shown) to serve as a lifting mechanism attachment part (not shown), and both longitudinal ends of the frame are extended at right angles to the longitudinal direction. The main body frame 21 is formed into an H shape, and the inside thereof is used as an elevator storage section 22. The extension frame 23
An inclined plate 24 is welded and attached to one side (left side in FIG. 1) of the cart B to facilitate loading and unloading of the cart B onto the lifting platform 30. A nut 25 is welded inside the shape of the four corners of the main body frame, and an adjustable leg 26 provided with a leg seat 26b is attached to one end of a leg shaft 26a formed with a screw threaded to the nut 25 so as to be freely adjustable. The adjustable legs 26 are adjusted to a height such that the lifting device is always installed in a stable state.

The elevating table 30 is formed into an elongated rectangular shape in plan to be accommodated in the elevating table storage section 22, and an elevating table frame 31 is constituted by a hollow member having a rectangular cross section. Here, to make the explanation easier to understand, the inclined plate 24 side of the extension frame 23 is the loading side (Figs. 1 and 2).
The opposite side (the right side in FIGS. 1 and 2) is called the terminal side. Supports 32 and 32' made of hollow members having a square cross section are vertically attached to both ends of the elevator frame 31 in the longitudinal direction by welding. A base plate 33 made of a plate material is attached to the upper surface of the elevator frame 31 by welding. Lifting platform 30
are arranged in the lifting platform storage section 22 so that the columns 32, 32' are on the terminal end side of the lifting device 10. Lifting platform 30
Sliding members 34, 34 that fit into rails 41, 41, each having a substantially T-shaped cross section, are provided near both ends of the longitudinal side (front side in FIG. 2) of the platform 30, which guide the vertical movement of the platform 30.

The elevating mechanism 40 includes a support 42 for attaching the rails 41, 41 to a frame on the elevating table storage section 22 side of the elevating mechanism attachment part (not shown) of the main body frame at a position corresponding to the sliding member 34 of the elevating table. 2
Attach vertically by main welding. Said rail 4
1 and 41 are attached to the side surfaces of the columns 42 and 42 on the side of the lifting platform with bolts so as to fit with the sliding members 34 and 34 of the lifting platform. A plate material is welded to the upper surface of the frame of the elevating mechanism attachment part (not shown) of the main body frame 21 to form a base plate (not shown), and a drive mechanism such as a motor and a reducer is attached thereon with bolts. The chain is installed across a sprocket attached to the shaft of the reducer and a sprocket rotatably attached to the shaft attached near the upper ends of the pillars 42, 42. The chain and the lifting platform 30 are connected in an appropriate manner.

The fixing release device for the cart B is the cart fixing mechanism 9.
0, the release mechanism 70, the actuation mechanism 60, and the operation mechanism 50
The operating mechanism 50 and the actuation mechanism 60 are provided on the elevating device main body 20 side, and the fixing mechanism 90 and the release mechanism 70 are provided on the elevating table 30 side.

The operating mechanism 50 will be explained with reference to FIG. A substantially U-shaped mounting plate 51 is provided approximately in the center of the back surface of the inclined plate 24.
Attach the intermediate wall by welding. A shaft 52 is attached to the upper end of the mounting plate 51 in a hole formed through both walls of the mounting plate 51, and a guide roller 53 having a concave peripheral surface is rotatably attached to the shaft 52. A supporting shaft 54 is attached to the lower end side of the mounting plate 51 in a hole provided through both walls of the mounting plate 51 in the same manner as described above, and one end of a substantially triangular actuating plate 55 is rotatably attached to the shaft 54. Attach to. A stopper portion 54a is provided on the upper side of the other end of the actuating plate 55 and projects toward the inclined plate 24 to prevent the actuating plate 55 from rotating counterclockwise about the support shaft 54. Further, below one end of the actuating plate 55 is a wire 5 which will be described later.
A protrusion 55c is provided with a small hole 55b for fixing 6. The petal 57 that operates the actuating plate 55 is
A cylindrical sliding member 57b is provided protruding from the back surface of the disc-shaped petal plate 57a, and a slot slightly wider than the thickness of the actuating plate 55 is provided at the tip of the sliding member 57b in the axial direction. The sliding member 57b of the petal 57 is installed by penetrating the inclined plate 24 and the mounting plate 51 from the upper surface of the inclined plate 24, and the actuating plate 55 is fitted into the slotted portion at the tip thereof, and the sliding member 57b is attached to the pin 58 near the stopper portion 54a. Twist and connect. A guide roller 59a having a concave portion formed on the circumferential surface is rotatably attached to the lower end of the extension frame 23 to which the inclined plate 24 is attached by welding.

The operating mechanism 60 will be explained with reference to FIG. The actuating mechanism 60 is attached to the upper surface of a mounting member 61 provided along the longitudinal direction on the lower side of the extension frame 23. The mounting plate 62 of the actuation mechanism 60 is made of a plate material having a cross-sectional shape, and is attached to the mounting member 61 with bolts with its longitudinal center being the center of the elevator. At the end of the loading side (left side in FIG. 1) of the mounting plate 62, an operating rod 63 having a cross-sectional shape is fitted into both walls of the mounting plate 62 with its intermediate wall facing outward, and is integrally penetrated by a shaft 63a. and attach it so that it can rotate freely. Note that E-shaped rings are sandwiched between both ends of the shaft 63a to prevent the shaft from coming off. A small hole is opened at the other terminal end of the mounting plate 62, and one end of the coil spring 64 is caught therein. The other end is attached to a small hole opened in the operating rod 63. The operating rod 63 is biased by the coil spring 64 to rotate clockwise. A stopper plate 65 is attached to the inside of one side wall of the mounting plate 62 with bolts, and the operating rod 63
Stop the clockwise rotation at a predetermined position. A small hole is opened in the middle wall of the operating rod 63 to fix the wire 56, and the tip of the wire 56 is opened to the protrusion 55c of the operating plate 55 of the operating mechanism 50 through guide rollers 59a and 59b. It is fixed and connected to the vertical lift 55b. The guide roller 59b is a rotatably mounted roller having a concave circumferential surface in order to separate the wire 56 from the elevator frame 31.

Next, the release mechanism 70 will be explained with reference to FIG. 2.

Spacing member 71 made of a rectangular shaped member in cross section
a and 71b are spaced apart from each other and are provided along the longitudinal side of the lifting table frame 31. The guide members 72 and 72' are similarly rectangular in cross section, and their upper surfaces are flush with the spacing members 71a and 71b, and the lifting platform 3
The spacing members 71a, 71 are symmetrical about the center of 0.
Pass it to b and fix it. The release mechanism 70 is disposed on the upper surface of the guide members 72, 72'.

On the upper surface of the carry-in side of both guide members 72, 72',
The movable member 73 is disposed across the movable member 73, and its width dimension is slightly smaller than the outer dimension of both the guide members 72, 72'. The movable member 73 is connected to both guide members 72,
In order to be slidably movable on the upper surface of the movable member 72', one surface of the cover members 74, 74' having an L-shaped cross section covers both sides of the movable member 73, and the other surface covers both the guide members 72, 72'. Attach with bolts to the outer end surface of the This guide member 72, 72'
A protrusion 75 with a screw hole formed on the inner side surface of the
Each center of the movable member 75' is provided so as to protrude so as to coincide with the terminal end face of the movable member 73.

Stopper bolts 76, 76' are screwed together from the terminal ends of the protrusions 75, 75', and the stopper bolts 76, 76' are screwed together so that the movable member 73 stops at a predetermined position. Fix the par bolts 76, 76'. A flat-shaped roller mounting plate 77 is provided on the end face of the movable plate 73, and a roller 78 is disposed between both walls of the roller mounting plate 77, and is attached through a shaft 78a to rotate the roller 78. Be free. One side of the intermediate wall of the roller mounting plate 77 is bent at a right angle and extended, and attached to the lower side of the movable member 73 with bolts. A pair of wires 7, which will be described later, are located at centrally symmetrical positions of the movable member 73.
9 and 79' are opened and provided with small holes for fixing them. Guide rollers 80, 80' having concave circumferential surfaces are rotatably attached to the upper surface of the spacing member 71b on the terminal end side via a shaft at approximately the same position as the small hole opened in the movable member 73. The guide roller 8
0 and 80' horizontally guide wires 79 and 79' fixed to the movable member 73 toward the outside of the lifting table 30, respectively. Furthermore, guide roller mounting members 82, 82' are provided on the top surface of both ends of the spacing member 71b.
are provided, and these guide roller mounting members 82, 82'
Guide rollers 80, 80' are rotatably attached toward the terminal end. The wires 79, 79' connected to the movable member 73 are connected to the guide rollers 80,
After being guided horizontally via guide rollers 80', the cart is guided vertically by guide rollers 81, 81' toward a cart fixing mechanism 90, which will be described later.

Next, the cart fixing mechanism 90 will be explained. The cart fixing mechanism 90 is provided by supports 32, 3 provided at both corners of the terminal end of the lifting platform 30, as shown in FIG.
2', a total of four fixing mechanisms 90 are arranged in two stages, upper and lower, and for the sake of explanation, the fixing mechanism 90 in the lower left stage (upper side in FIG. 2) toward the terminal end will be described. The cart fixing mechanism 90 has an upper mounting plate 91a and a lower mounting plate 91b having an L-shaped side surface separated from each other so as to face each other vertically, and is attached to the columns 32 and 32' with bolts so as to project upward from the lifting table 30. The locking arms 92, 92' for fixing the cart shafts C, C' are made of plate material. A small hole is provided at the tip of each of the locking arms 92, 92', and a shaft 93, 93' having a stepped screw portion at the end thereof is inserted into the hole and fixed with a nut.
Rollers 94, 94' are rotatably attached to the shafts 93, 93', and E-rings are clamped at the tips of the shafts 93, 93' to prevent them from coming off. Rubber stopper receiving plates 95, 9 are provided on the upper surfaces of the terminal ends of the latching arms 92, 92'.
5' is fixed with screws. Latching arm 92,9
A shaft hole for mounting support shafts 96, 96' is provided at approximately the center of 2'. Further, small holes for fixing the wires 79, 79' are also provided in the vicinity of the roller 94 of the locking arms 92, 92'. Support shaft 96, 96'
is a bolt with a stepped screw tip, and two hollow spacers 97a, 97b, 97a', 97
The locking arms 92, 92' are interposed between the shaft holes of the locking arms 92, 92' and the spacers 97a,
97b, 97a', 97b' are mounted on the same shaft, and the tips of the support shafts 96, 96' are attached to the lower mounting plates 91b, 9.
Spacers 97a, 97b, 97a', 9 from the 1b' side
7b' and the upper mounting plate 91 via the latching arms 92, 92'.
a, 91a', and stopper plates 98, 98' are installed between the upper spacers 97a, 97a' and the upper mounting plates 91a, 91a', and the tips are fixed with nuts. Between the upper mounting plate 91a and the lower mounting plate 91b, spacer walls 99 and 99' having stepped portions 99a and 99a' are interposed. Attach them so that they face each other. Guide rollers 100, 100' having concave circumferential surfaces are rotatably attached to the terminal end faces of the spacer walls 99, 99'. The step portions 99a, 99a' are received by the lower surfaces of the locking arms 92, 92' to stabilize their rotation.
Guide roller 1 attached to spacer walls 99, 99'
The centers of the circumferential surfaces of 00 and 100' coincide with the centers of the circumferential surfaces of the aforementioned guide rollers 81 and 81'.
The wires 79a, 79a' vertically guided by the guide rollers 81, 81' are fixed to the locking arm 92 via the guide rollers 100, 100'. Torsion coil springs 101, 101' are attached to the circumferential surfaces of the lower spacers 97b, 97b', and one end of the torsion coil spring 101, 101' is hooked to the terminal end of the locking arm 92, 92', and the other end is It is hooked onto the lower mounting plates 91b and 91b'. These torsion coil springs 101, 101' are attached to the latching arms 92, 9.
The rollers 94, 94' provided at the tips of the elevators 2' are biased so as to rotate inward of the elevator platform 30. The rotation of the stopper plates 98, 98' is stopped by the stopper receiving plates 95, 95' so that the rollers 94, 94' at the tips of the locking arms 92, 92' are always at a predetermined position.

Positioning of the cart shafts C and C' at predetermined positions is as follows:
A mounting member 1 provided protruding inside the columns 32, 32' (towards the center of the lifting platform) near the fixing mechanisms 90, 90'.
Adjustment bolt 10 made of resin material at 02, 102'
3,103'.

The mounting members 102, 102' have horizontally penetrating screw holes into which the adjustment bolts 103, 103' are screwed.
Slots 102a, 102a' are inserted horizontally from the central end of the screw holes 2' toward the pillars 32, 32', passing through the centers of the screw holes and reaching predetermined positions. Further, the mounting members 102, 102' are provided with the slots 1.
A hole is opened between the terminal end of each of the mounting members 102, 102a' and the screw hole in a direction perpendicular to the screw hole, through which the mounting members 102, 102' are vertically passed. A screw for screwing a bolt is formed in the lower hole where the hole is divided by a slot, and after screwing the adjusting bolt 103, 103' by a predetermined amount into the horizontal screw hole, a vertical screw is formed. Bolts 105, 105' are screwed into the holes from above and tightened to fix the adjustment bolts 103, 103'. The above predetermined amount means that the center of the rollers 94, 94' provided at the tips of the latching arms 92, 92' is the center of the support shafts 96, 96' of the latching arms 92, 92' and the center of the cart shafts C, C'. Adjustment bolt 10 that positions the cart axes C and C' so that they are located inside the line connecting the center of the shaft.
The protrusion amount is 3,103'. If the adjustment bolts 103, 103' are adjusted to such positions, even if, for example, an operator intentionally pulls the cart B to remove it, the cart shafts C, C' will not hold the locking arms 92, 92'. Since the rollers 94, 94' at the tips of the locking arms 92, 9 are operated to rotate inward around the support shaft 96, the locking arms 92, 9
The cart cannot be removed because the stopper receiving plates 95, 95' at the ends of the carts 2' abut against the stopper plates 98, 98' and stop their rotation.

Next, the operation will be explained using FIGS. 3 to 6. Note that FIGS. 1 and 2 will be used to explain detailed parts. The operation sequence will be explained with reference to FIG. 3. The cart lifting platform 30 is in a standby state at the initial position (lowest position). The worker moves cart B onto the inclined plate 24.
The cart is carried onto the cart lifting platform 30 along the (see Fig. 2 below).

When the cart B is further carried in (as indicated by the arrow in FIG. 2), the cart shafts C and C' press against the rollers 94 provided at the tips of the locking arms 92 and 92', counteracting the bias of the torsion coil spring 101. Then, the locking arms 92, 92' are rotated to the outside of the lifting platform 30 around the support shafts 96, 96'. Cart axes C and C' are adjusted by bolts 103 and 1.
03', the locking arms 92, 92' are biased by the torsion coil springs 101, 101'.
2 and 92' together with rollers 94 and 94' provided at the ends thereof, rotate about support shafts 96 and 96' toward the initial position. The cart shafts C, C' are fixed by being pressed against the adjusting bolts 103, 103' by rollers 94, 94'. The top of the cart shelf b is flush with the vat transfer device 18, and the pusher 18a of the vat transfer device 18 stores the vat A carrying the packaged products on the top shelf b of the cart. When the storage of the bat A at the top of the cart shelf is completed, the motor of the elevating mechanism 40 is started and rotates normally. As the chain rotates due to the rotation of the sprocket of the speed reducer, the lifting platform 30 rises by one cart shelf, and when the detecting means detects that the shelf and the top surface of the butt transfer device 18 are aligned, The rotation of the motor is stopped and the lifting platform 30 stops rising.
When the storage of the bat A on the cart shelf b of the next stage is completed, the lifting platform 30 rises again by one stage of the cart shelf b.
Repeat the above operations (see Figure 4 above). When the detection means detects that the bats A are stored in all the cart shelves b, the motor of the lifting mechanism 40 is reversely operated and the cart lifting platform 30 is lowered to the initial position. When the elevator platform 30 descends to the initial position and stops, the operator depresses a pedal 57 provided protruding from the inclined plate 24 (see FIG. 5 below). During this time, the bats A are sequentially supplied to the cart shelf b of the cart in the opposite position (see FIG. 1 below). When the pedal 57 is depressed until it hits the inclined plate 24, the actuating plate 55 rotates clockwise about the shaft 54, and the wire 56 attached to its tip is pulled. The wire 56 is connected to the operating mechanism 6 via guide rollers 53, 59a, 59b.
Since it is connected to the operating rod 63 of 0, the operating rod 6
3 rotates counterclockwise about the shaft 63a against the bias of the coil spring 64. The operating rod 63 presses a roller 78 attached to the tip of the movable plate 73 of the release mechanism 70, and as the operating rod 63 rotates, the movable plate 7
3 to the carry-in side (left side in Figure 1) (see Figure 2 below). Wire 79 attached to movable plate 73
a is connected to the latching arms 92, 92' of the fixing mechanism 90 via the guide rollers 80, 81, 100, so that the latching arms 92 are attached to the torsion coil springs 97b, 97b' as the movable plate 73 slides. When the lifting platform 30 rotates outward around the support shafts 96, 96' against the force, the rollers 94, 94' attached to the ends of the latching arms 92, 92' fix the cart shafts C, C'. be released. When the operator moves the cart B to the carry-in side, the cart axes C and C' move away from the predetermined positions and are completely released from the fixing mechanism 90. When the operator releases the pedal 57, the operating rod 63 of the operating mechanism 60 rotates clockwise due to the bias of the coil spring 64, hits the stopper plate 65, stops its rotation, and returns to the initial position. As the operating rod 63 returns, the movable plate 73 releases the torsion coil spring 9 of the fixing mechanism 90.
The latch arms 92, 92' are biased by the biasing elements 7b, 97b'.
is rotated toward the center of the lifting platform 30, and the stopper receiving plate 9 provided at the end of the latching arm 92, 92'
5 and 95' abut against the stopper plates 98 and 98' to stop their rotation and return to the initial position.

Therefore, the above embodiment is safe because the locking mechanism 90 is released using the pedal 57, so the cart B can be supported with both hands, and it is convenient because it can be used with carts B having different diameters of the cart shaft. , when the fixing mechanism 90 is activated, the locking arms 92, 92' that fix the cart axles C, C' rotate and release the cart axles C, C', so the cart can be moved without any resistance. B can be taken out from the lifting platform 30, and therefore the alignment of the packaged items on vat A is not disturbed.

In the above embodiment, the operating mechanism 50 and the operating mechanism 6
0. Although the wires 56, 79, 79' are used to link the release mechanism 70 and the fixing mechanism 90, a mechanism such as a lever link may also be used. In addition, the operating rod 63 of the operating mechanism 60 is used to operate the release mechanism 70.
Although it is explained that the actuator is actuated by a rotational movement, it may be operated by any one of a sliding movement and a sliding movement, and a rotational movement and a rotational movement. Furthermore, although the operating mechanism 50 is operated by a pedal 57, it is not limited to the pedal 57 and may be a handle or the like.

(Effects of the invention) Since the present invention has the above configuration, it has the following advantages.

When the cart is carried into a predetermined position on the lifting platform at the lowest position, the latch arm moves in the opposite direction when it hits the fixing mechanism, and the cart returns to the direction of engagement due to the biasing force of the arm. is fixed, so that even if a worker accidentally operates the operating mechanism while the platform is moving up and down, the movement of the operating rod will not be transmitted to the movable member and the latch arm will not operate, and the operating mechanism will be in the lowest position. When operated, the movement of the operating rod is transmitted to the movable member and the locking arm is moved in the anti-engagement direction, thereby releasing the fixing mechanism and making it possible to move the cart.The cart itself has wheel fixing means. It is possible to arbitrarily enable the cart to be moved and fixed on the lifting platform in the lowest position without any provision.

Therefore, even when the platform is at its lowest position, unless the operating mechanism is operated, the cart will not move and be removed from the platform, making it safe and ensuring that the butts can be stored on the shelves reliably. Moreover, the cost can be reduced compared to a cart that requires wheel fixing means to be provided on the cart itself.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional side view of a main part of a cart fixing release device in a cart lifting/lowering device according to an embodiment of the present invention, with the cart omitted; FIG. 2 is a cross-sectional plan view of the main part, and FIGS. Figure 6 is an explanatory diagram of the operation of the above embodiment, and Figure 7 is a product using the above embodiment that automatically places a predetermined number of packaged products on a vat and automatically stores the vats on the shelf of the cart. FIG. 8 is a plan view showing the automatic conveyance device, and FIG. 8 is a front view thereof. In the figure, B...cart, b...shelf, 20...apparatus main body, 30...lifting platform, 40...lifting mechanism, 50
...Operating mechanism, 60... Operating mechanism, 63... Operating rod, 70... Release mechanism, 73... Movable member, 90
...Fixing mechanism, 92...Latching arm.

Claims (1)

[Scope of utility model registration request] A cart elevating device in which a movable cart having multi-stage shelves is carried in and placed on the elevating platform at the lowest position, and the elevating platform and the cart are moved up and down by an elevating mechanism built into the device main body. On the platform side, there is a fixing mechanism that engages removably when a locking arm that is constantly biased in the engagement direction is actuated by the collision of a carried cart, and a movable member that is mechanically linked to the locking arm to move up and down. A release mechanism is provided at the bottom of the stand and is movably disposed, and an actuation mechanism is provided on the main body side of the device in which an actuation rod is movably placed at a position corresponding to the movable member, and a release mechanism is mechanically linked to the actuation rod. and an operating mechanism for operating the actuating rod, and the movable member and the actuating rod are configured to engage only when the lifting platform is in the lowest position, so that the operation of the actuating rod is transmitted to the movable member. Features a cart release device.