JPS622229Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a pallet-type passenger conveyor using an endless tread link chain.

At airports, train stations, etc., pallet-type passenger conveyors are used as a means of transporting large numbers of people continuously and safely. Conventionally, this type of passenger conveyor has two parallel endless tread link chains. A large number of pallets are attached to the pallet in a continuous manner without any gaps over its entire length, and the pallets are supported so that they can run along the outbound guide rail and the return guide rail via pallet drive wheels. Rack teeth formed on the treadle link chain are meshed with a drive roller chain wound around the gear, and by running this roller chain, the pallet is moved via the treadle link chain.

In a passenger conveyor that horizontally moves pallets on the outward and return paths of the conveyor path using the intermediate drive system as described above, the rack teeth of the link plate constituting the tread link chain and the rollers provided in the roller chain of the drive device There is a slight gap in the meshing part of the pallet, and the pallet is reversed at about twice the reversing speed when traveling horizontally at the reversing parts at both ends of the conveyance path.
There was a problem in that the speed difference when reversing the pallet acts on the meshing portion between the rack teeth and the rollers, causing the pallet to move back and forth (slow speed phenomenon) due to backlash, causing the pallet to wobble.

This idea solves the above problems and
By holding the tread link chain in a tensioned state and inverting the pallet, rattling due to buckling can be prevented from occurring between the link chain and the roller chain of the drive device, and the pallet can move back and forth at the inversion section. The purpose of the present invention is to provide an intermediate drive type passenger conveyor that allows stable movement of pallets without causing any damage to the pallets.

This idea is based on a passenger conveyor that horizontally moves pallets using an intermediate drive system, in which a drive device having a roller chain that engages with a link chain is installed on the side of the reversing section at one end of the conveying path, and A link tensioning device is provided on the side, and this tensioning device has a pair of left and right chain gears rotatably supported on a support frame, and a roller that meshes with the rack teeth provided on the link plate of the link chain on the chain gears. The support frame is supported by the main frame via a spring that biases the support frame in a direction opposite to the forward running direction of the pallet conveyance path.

In the passenger conveyor of this invention, the rollers of the roller chain of the driving device and the tensioning device mesh with the rack teeth of the link plate of the tread link chain so as to push them toward the reversed portions at both ends, thereby tensioning the link chain. Even if the speed increases at the reversing sections at both ends, rattling due to backlash can be prevented from occurring between the link chain and both roller chains, and this prevents the pallet from moving back and forth at the reversing sections. be able to.

An embodiment of this invention will be described below with reference to FIGS. 1 to 3. Figure 1 shows an overall view of a pallet type passenger conveyor equipped with a link tensioning device according to this invention.
Outward guide rails 2, 3 and return guide rails 4, 5 are arranged horizontally and parallelly along the longitudinal direction of the main frame 1, respectively, on the left, right, top, and bottom of the frame. 2, 4 and 3, 5 are symmetrical within the main frame 1 as shown in FIG. In addition, endless tread link chains 6, 7 with a length corresponding to the entire length of the upper and lower guide rails 2, 4, 3, and 5 on the left and right are arranged in parallel to extend over both. Between the tread link chains 6 and 7, that is, between the opposing connection points of the link plates 6a and 7a constituting each tread link chain,
As shown in FIG. 2, a pallet shaft 8 passing through the pallet shaft 8 is rotatably mounted, and pallet driving wheels 9 and 10 are rotatably attached to both ends of each pallet shaft 8. Left and right outbound and return guide rails 2 and 3 and 4 and 5
The tread link chains 6 and 7 are supported so as to be movable by being rotatably engaged with the treadle link chains 6 and 7 between them. Further, pallets 11 are fixed between adjacent pallet shafts 8 which are mounted between the left and right tread link chains 6 and 7, and these pallets 11 are arranged in a continuous manner without gaps over the entire length of the tread link chains. ing.

A drive device 12 is installed at one end of the main frame 1, located in the center of the left and right tread link chains 6, 7, and this drive device 12 connects the tread link chains 6, 7 to the outbound guide rail 2. , 3 and return guide rails 4, 5, and a pair of chain gears 12a, 12b corresponding to each tread link chain 6, 7 (corresponding to tread link chain 6 in FIG. 1). (only the treadle link chain 7 is shown, but is omitted as it has the same structure) and both chain gears 1.
2a and 12b, and formed on the inner edge of the link plate 6a constituting the tread link chain 6 (similar rack teeth are formed in the tread link chain 7).
It is composed of a driving roller chain 12c that meshes with the chain gears 12c, and an electric motor 12d with a reduction gear that rotationally drives the chain gears 12a and 12b.

Reference numeral 13 denotes a link tensioning device installed on the other end side of the main frame 1 at a position symmetrical to the link driving device 12, and this link tensioning device 13 has a pair of links corresponding to the treadle link chains 6 and 7 as shown in FIG. Chain gears 13a, 13b (FIG. 3 shows only those corresponding to the tread link chain 6, but the tread link chain 7 is also omitted as they have the same structure), and both chain gears 13a, 13.
B and the tread link chain 6
The chain gears 13a and 13b are rotatably attached to the support frame 14 (the chain gear on the treadle link chain 7 side is also attached). ), this support frame 14 further includes a pair of channel-shaped support members 1 horizontally suspended on the main frame 1.
The spring pressure adjusting nut 20 is screwed onto the tip of the support rod 19 which is held between the support rods 18 and 17 between the support rods 18 and 17 so as to be movable in the traveling direction of the tread link chain. A spring receiver 2 is provided between this nut 20 and the support member 17.
A compression spring 22 that makes the support rod 19 concentric is interposed through the support frame 1 .
A moving force in the direction of arrow X in FIG. 3 is applied to the entire chain gears 13a and 13b including chain gears 4.
Reference numeral 23 designates a moving handrail arranged on the main frame 1 along the moving direction of the pallet 11.

Next, the operation of this device configured as described above will be explained.

When the link drive device 12 is started and its roller chain runs, the tread link chains 6 and 7 that mesh with the upper and lower horizontal portions of the roller chain via the rack teeth are connected to the outbound and return guide rails 2 and 3. The pallet 11 is moved in the direction of the arrow shown in FIG. 1 while being guided by the pallets 4 and 5.

On the other hand, when the tread link chains 6 and 7 are run, the roller chain 13c of the link tensioning device 13, which meshes with the rack teeth 6b of the link plate 6a, also moves as shown in FIG. The roller chain 13c including the support frame 14 is moved in the direction of the arrow X in FIG. 3 by the compression spring 22.
Since a tensile force is acting in the direction, the lug teeth 6b of the link plate 6a and the lug rollers 13e of the roller chain 13c mesh as shown in FIG. 3, so that the entire tread link chains 6 and 7 are pulled in the direction of the arrow X. Become.

Further, the roller chain 12 of the drive device 12
Since the link chains 6 and 7 run while the roller c pushes the rack teeth of the link plate in the opposite direction to the X direction, the rollers of the roller chains 12c and 13c of the drive device 12 and the tension device 13 and the rack teeth of the link plate are moved. The meshing with the teeth is stable,
Even if the pallet is reversed at the reversing sections at both ends of the conveyance path at a speed approximately twice as fast as when traveling horizontally, the difference in these speeds will not cause a slowing phenomenon.

As explained above, according to this invention, in a passenger conveyor that horizontally moves pallets using an intermediate drive system, a drive device is provided at one end of the conveyance path and a tension device is provided at the other end. By meshing the rollers provided on the roller chain of the device with the easy teeth provided on the links of the treadle link chain, and pushing the link chain toward the reversed portions at both ends to create tension, the rattling caused by buckling can be eliminated from the link chain and both sides. It is possible to prevent this from occurring between the roller chains, and to stabilize the engagement between the roller chain and link chain of the drive device, so that the pallet can be reversed at both end reversals at approximately twice the speed of horizontal travel. Even if the treadle link chain is moved forward and backward, there is no
A stable and comfortable passenger conveyor can be provided.

[Brief explanation of the drawing]

Figure 1 is a schematic side view showing the entire passenger conveyor equipped with a link tensioning device according to this invention;
The figure is a cross-sectional view of the main part taken along - in FIG. 1, and FIG. 3 is a side view showing an example of the link tensioning device in this invention. 1... Main frame, 2, 3... Outbound guide rail,
4, 5...Return guide rail, 6,7...Tread link chain, 6a, 7a...Link plate, 6b...Rack tooth, 9, 10...Pallet driving wheel, 11...Pallet, 12...Link Drive device, 12a, 12b...Chain gear, 12c...Roller chain, 13...Link tension device, 13a,
13b...Chain gear, 13c...Roller chain,
14... Support frame, 16, 17... Support member, 1
8, 19...Support rod, 22...Compression spring.

Claims (1)

[Scope of utility model registration request] In an intermediate drive type passenger conveyor in which pallets are horizontally moved on the outbound and return passes of the conveyance path via reversing sections provided at both ends of the conveyance path using an endless tread link chain, the reversing section side at one end of the conveyance path is used. A driving device having a roller chain that meshes with the link chain is installed at the top of the conveyor path, and a link tensioning device is installed at the other end of the conveyance path on the reversing section side. An endless chain is wound around the chain gear and has rollers that mesh with the rack teeth provided on the link plate of the link chain, and the support frame is moved in the opposite direction to the traveling direction of the outgoing path of the pallet conveyance path. A passenger conveyor characterized in that it is supported by a main frame via a biasing spring.