This disclosure presents a product display and merchandising device, system and method that may include multiple such product displays and merchandising devices, and a method for dispensing products to customers using such product display and merchandising device. The merchandising system may efficiently utilize storage space and provide an aesthetic display by automatically aligning different products to a front display surface. The merchandising system may use multiple holders or clips on a conveyor belt to hang and display products. A customer may pull and remove a front piece of the products. As the customer pulls the front piece of merchandise or product, the action moves the conveyor belt and brings a next piece of products forward, to the position that the front piece of the product previously occupied. As such, the merchandising system may enable customers to freely remove products and maintain a tidy and neat display of the products.

This disclosure presents a product display and merchandising device, system and method that may include multiple such product displays and merchandising devices, and a method for dispensing products to customers using such product display and merchandising device. The merchandising system may efficiently utilize storage space and provide an aesthetic display by automatically aligning different products to a front display surface. The merchandising system may use multiple holders or clips on a conveyor belt to hang and display products. A customer may pull and remove a front piece of the products. As the customer pulls the front piece of merchandise or product, the action moves the conveyor belt and brings a next piece of products forward, to the position that the front piece of the product previously occupied. As such, the merchandising system may enable customers to freely remove products and maintain a tidy and neat display of the products.

The present disclosure relates to a flight bar clamp for connecting a flight bar to at least one chain link of at least one conveyor chain of a chain conveyor used in underground mining. The flight bar clamp comprises a clamp main body extending along a clamp longitudinal axis, and at least one chain link engaging portion disposed at the clamp main body configured to engage with one chain link. The at least one chain link engaging portion of the flight bar clamp includes a sacrificial anode reception, and a sacrificial anode body disposed in the sacrificial anode reception. The sacrificial anode body may protect the flight bar clamp, the flight bar and the chains from contact corrosion.

The method for predicting a wear amount of a chain pin by using a friction noise according to an embodiment of the present invention predicts a wear amount of a chain pin of a roller chain by using a friction noise while the roller chain is revolved by a driving force of a sprocket. The method includes: sensing a noise around the roller chain by means of a noise sensing unit; separating a friction noise between rollers of the roller chain and teeth of the sprocket from the sensed noise around the roller chain by means of a sound source separation unit; and predicting a wear amount of the chain pin using the separated friction noise between the rollers and the teeth by means of a sound source analysis unit.

A chain bending limiting attachment includes first bending limiting members and second bending limiting members. The first and second bending limiting members are detachably attached to a chain to be arranged in a series arrangement direction. Each first bending limiting member includes a first engaging portion. When the chain bends in a first direction, the first engaging portion engages with another first bending limiting member adjacent to the first bending limiting member in the series arrangement direction to limit bending of the chain in the first direction. Each second bending limiting member includes a second engaging portion. When the chain bends in a second direction, the second engaging portion engages with another second bending limiting member adjacent to the second bending limiting member in the series direction to limit bending of the chain in the second direction.

A chain bending limiting attachment includes first bending limiting members and second bending limiting members. The first and second bending limiting members are detachably attached to a chain to be arranged in a series arrangement direction. Each first bending limiting member includes a first engaging portion. When the chain bends in a first direction, the first engaging portion engages with another first bending limiting member adjacent to the first bending limiting member in the series arrangement direction to limit bending of the chain in the first direction. Each second bending limiting member includes a second engaging portion. When the chain bends in a second direction, the second engaging portion engages with another second bending limiting member adjacent to the second bending limiting member in the series direction to limit bending of the chain in the second direction.

A link for a conveyor chain includes a first portion and a second portion laterally spaced apart from the first portion. The first portion includes a first sprocket-engaging pin, and the second portion includes a second sprocket-engaging pin. The first sprocket-engaging pin and the second sprocket-engaging pin protrude laterally away from one another. The first sprocket-engaging pin and the second sprocket-engaging pin may each have an oblong cross-section. At least one retainer can secure a connecting pin against movement relative to at least one of the first portion and the second portion, and each retainer can be positioned substantially within one of the first portion and the second portion.

The chain stretch detection device is configured to detect a stretch of a chain in a power transmission device. The power transmission device includes: a driving sprocket; a driven sprocket; and a chain, which is wound around the driving sprocket and the driven sprocket, and is configured to transmit power of the driving sprocket to the driven sprocket. The chain stretch detection device includes: a meshing height measurement device configured to measure meshing heights of the chain in a range in which the driven sprocket meshes with and the chain; and a signal processing device configured to determine a height difference between adjacent rollers in the chain through use of signals acquired by the meshing height measurement device and estimate an amount of the stretch of the chain based on the determined height difference.

A friction-type drive apparatus and a carousel comprising the same are disclosed. A friction-type drive apparatus, according to one embodiment, comprises: a motor; a drive pulley rotated by the motor; a belt connected to the drive pulley; a driven pulley rotating in accordance with the drive of the belt; a pressing unit contacting the inner surface of the belt; and an elastic unit for pressing the pressing unit toward the belt.

A friction-type drive apparatus and a carousel comprising the same are disclosed. A friction-type drive apparatus, according to one embodiment, comprises: a motor; a drive pulley rotated by the motor; a belt connected to the drive pulley; a driven pulley rotating in accordance with the drive of the belt; a pressing unit contacting the inner surface of the belt; and an elastic unit for pressing the pressing unit toward the belt.