The utility model provides a horizontal transmission device for a multi-layered stand frame. The horizontal transmission device comprises at least one L-shaped frame strip, at least one motor frame and at least one horizontal transmission device. Each horizontal transmission device comprises a motor, a first guiding wheel, a second guiding wheel, a transmission chain, an elastic linkage shaft and a direction arm. By means of each direction arm, angle of each elastic linkage shaft can be changed so that one drawing type layer frame is arranged in a clamping mode. Each motor drives each first guiding wheel and each transmission chain interlocks each second guiding wheel and each first guiding wheel to rotate in a same direction so that each drawing type layer frame is horizontally led out or led in. Elasticity of the each first guiding wheel and each second guiding wheel can adapt to the diameter changes of each drawing type layer frame. Elasticity of each elastic linkage shaft can adapt to the angle changes of each direction arm so that suitable tension force of each transmission chain can be maintained.本發明係提供一種多層立架之水平傳動裝置,其包含至少一L型框條、至少一馬達架與至少一水平傳動機構,該水平傳動機構係包含一馬達、一第一導輪、一第二導輪、一傳動鏈條、一彈性連動軸以及一方向臂;藉由該方向臂可改變該彈性連動軸之角度,以夾置一抽拉式層架,以該馬達驅動該第一導輪並以該傳動鏈條連動使該第二導輪與該第一導輪同方向轉動,以將該抽拉式層架水平導出或導入,該第一導輪與該第二導輪之彈性可適應該抽拉式層架之架徑變化,且該彈性連動軸之彈性可適應方向臂造成之角度變化,使該傳動鏈條可維持適當之張力。11‧‧‧L型框條120‧‧‧馬達121‧‧‧第一軸心122‧‧‧第二軸心123‧‧‧第一導輪1230‧‧‧第一胎部1232‧‧‧第一鏈輪124‧‧‧第二導輪1240‧‧‧第二胎部1242‧‧‧第二鏈輪125‧‧‧彈性連動軸1250‧‧‧第一彈簧1252‧‧‧內限位部1254‧‧‧外限位部1256‧‧‧第二樞軸127‧‧‧傳動鏈條13‧‧‧馬達架130‧‧‧第一樞軸32‧‧‧支軌34‧‧‧抽拉式層架340‧‧‧滾輪
