JP4948005B2 - Lubricant automatic lubrication type chain - Google Patents

Description

  The present invention relates to a lubricating oil automatic oil supply type chain such as a roller chain, a bush chain, a bushless roller chain (a chain in which a roller is directly fitted to a pin without using a bush), and in particular, unloads iron ore and coal. The present invention relates to a lubricating oil automatic lubrication type chain that is suitably used as a bucket chain for transporting, a heavy-duty chain for transporting heavy objects such as automobiles, and a flow conveyor chain for granular materials.

  Conventionally, various types of chains have been developed as lubricating oil automatic lubrication type chains that extend the life of the chain by continuously supplying lubricating oil to the sliding surfaces of the pins, bushes and rollers that connect the inner and outer plates. Has been. For example, a chain with an automatic oil supply device that supplies lubricating oil from a lubricating hole provided in the pin between the pin and bushing has been proposed, and this chain is slidable to partition one side of the lubricating oil storage chamber inside the pin A piston is provided, and this piston is urged by a spring and moved in the longitudinal direction of the pin to push out the lubricating oil in the storage chamber onto the sliding surface (see Patent Document 1).

  The above chain with an automatic oiling device pushes out the lubricating oil stored in the pin by moving the piston with the biasing force of the spring, so that the lubricating oil is always pushed out with a constant pressure with the biasing force of the spring. In addition, when used as a lifting bucket chain or heavy load chain in a work environment where dust is frequently generated, the amount of lubricant consumed on the outer surface of the pin will increase, so it must be replenished frequently. There is a problem in replenishment maintenance.

  As shown in FIG. 4, the conventional automatic lubricating oil supply chain 31 that solves the above problem includes a pair of inner plates 32, 32 and a pair of outer plates 35, 35, and a pin 36 on which a bush 33 is externally fitted. Concatenated with That is, the lubricating oil automatic oil supply type chain 31 has both ends of the bushes 33 and 33 fitted and fixed to a pair of bush holes 32a and 32a formed in the pair of inner plates 32, respectively. Both ends of pins 36 and 36 are fitted and fixed to pin holes 35a and 35a that are rotatably fitted and are formed in a pair of outer plates 35 and 35, respectively. 33 is configured to be rotatably fitted inside.

An oil supply passage 36a having an opening 36b on the outer peripheral surface of the pin 36 is formed inside the pin 36, and an automatic oil supply device 37 that pushes the lubricating oil M to the oil supply passage 36a by a slow release gas pressure is detachable at the end of the pin 36. It is attached to. The automatic oil supply device 37 includes a lubricant oil storage chamber 38 that supplies the lubricant oil M to the oil supply passage 36a, a slidable piston 39, a gas filling chamber 40, and a gas generator that gradually releases gas into the gas filling chamber 40. The gas generation mechanism 41 includes an electrochemical generator 41a and generated gas adjusting means 41b (see Patent Document 2). In addition, the code | symbol 42 in FIG. 4 is a dust protection cover.
Japanese Utility Model Publication No. 6-63516 JP 2000-142955 A

  As shown in FIG. 4, the conventional lubricating oil automatic oil supply type chain 31 flows out from the opening 36b in a state where the lubricating oil M is always filled in the oil supply passage 36a formed in the pin 36. Therefore, even when the lubricating oil in the lubricating oil storage chamber 38 provided in the automatic oil supply device 37 is depleted, a considerable amount of the lubricating oil M remains in the oil supply passage 36a inside the pin 36. In addition, since the automatic oil supply device 37 is structured to be attached to one end portion of the pin 36, there is a problem that the lubricating oil storage chamber 38 is small and the lubricating oil storage amount cannot be increased. Furthermore, there is a problem that the lubricating oil M remaining in the oil supply passage 36a leaks when the automatic oil supply device 37 is attached or detached. In addition, when this lubricating oil automatic oil supply type chain 31 is used for a large-sized conveyor chain such as a lifting bucket chain or a heavy load chain, the amount of lubricating oil consumed at the sliding portion of the outer peripheral surface of the pin increases. There is a problem in replenishment maintenance that the oil reservoir chamber 38 must be replenished frequently unless it is large.

  Therefore, the present invention solves the conventional problems as described above, can be supplied to the outer peripheral surface of the pin, leaving almost no lubricating oil stored in the storage chamber inside the pin, An object of the present invention is to provide an automatic lubricating oil supply type chain that can increase the amount of lubricating oil stored in a storage chamber and avoid frequent replenishment of lubricating oil.

  In the first aspect of the present invention, the inner plate and the outer plate are connected by a pin on which a bush and / or a roller are externally fitted, and the pin opens from the inside of the pin to the outer peripheral surface of the pin at a substantially central portion in the longitudinal direction. In the automatic lubricating oil supply type chain, in which the lubricating oil can be supplied from the lubricating hole to the outer peripheral surface of the pin, one end of the pin is opened inside the pin and the longitudinal direction of the pin is approximately A hollow portion having a bottom portion at the center is formed over the longitudinal direction of the pin, and a concave fitting portion having a lubricating oil inflow port communicating with the oil supply hole is formed at the bottom portion. A lubricating oil cylinder having a length approximately equal to the length of the lubricating oil cylinder is detachably mounted, and a protruding portion having a lubricating oil outlet is formed at the tip of the lubricating oil cylinder, and the protruding portion is in close contact with the recessed fitting portion. The lubricating oil cylinder is fitted with a slidable piston. A gas filling chamber partitioned by a gas chamber and a lubricating oil storage chamber, and a gas generator for gradually releasing gas into the gas filling chamber at the rear end, the gas generator having a dry cell type gas A generator is provided, and the gas gradually generated from the gas generator is supplied to the gas filling chamber, and the piston is moved by the gas pressure of the gas accumulated in the gas filling chamber. A display mechanism for indicating that the lubricating oil in the lubricating oil storage chamber has been depleted, and the display mechanism is connected to the piston and connected to the dry battery of the gas generator; and the lubricating oil cylinder A lubricating oil automatic oil supply type chain that is a mechanism in which a pilot lamp provided in the lubricating oil cylinder is lit by contact energization with a contact provided at the tip of the battery and connected to the dry cell; and Cormorant is obtained by solving the above problems by configuration.

  According to the chain of the present invention according to claim 1, a hollow portion having an opening at one end of the pin and having a bottom portion substantially in the center in the pin longitudinal direction extends in the pin longitudinal direction. Since the lubricating oil cylinder having a length substantially equal to the hollow portion length is mounted, the length of the lubricating oil cylinder can be increased, and as a result, a considerable amount of lubricating oil can be placed in the lubricating oil cylinder. It can be stored and frequent lubrication oil supply can be avoided.

  In addition, a concave fitting portion having a lubricating oil inlet communicating with an oil supply hole inside the pin is formed at the bottom of the hollow portion, a lubricating oil cylinder is detachably attached to the hollow portion, and the tip of the lubricating oil cylinder is Since the protruding portion having the lubricating oil outlet is formed and the protruding portion is closely fitted to the concave fitting portion, the lubricating oil cylinder can be made of a cartridge type, and the lubricating oil can be changed by simply replacing the lubricating oil cylinder. Can be replenished, and replenishment maintenance can be improved.

  The lubricating oil cylinder includes a gas filling chamber partitioned by a slidable piston and a lubricating oil storage chamber, and a gas generator that gradually releases gas into the gas filling chamber at the rear end, and a gas The generator is equipped with a dry cell type gas generator, and the gas generated gradually from the gas generator is supplied to the gas filling chamber, and the piston is moved by the gas pressure of the gas accumulated in the gas filling chamber. By moving the piston of the gas pressure gradually released from the container, the lubricating oil can be supplied to the sliding portion of the outer peripheral surface of the pin at a constant pressure until the lubricating oil in the lubricating oil cylinder is exhausted. Further, since the lubricating oil can be stably supplied to the outer peripheral surface of the pin, it can be suitably used as a heavy-duty chain for lifting and transporting heavy objects such as bucket chains and automobiles that consume a large amount of lubricating oil.

  Also, the lubricating oil cylinder is provided with a display mechanism for indicating that the lubricating oil in the lubricating oil storage chamber has been depleted, and this indicating mechanism is provided at the contact point provided in conjunction with the piston and at the tip of the lubricating oil cylinder. Since the pilot lamp is lit by contact energization with the provided contact, it is possible to quickly determine that the lubricating oil in the lubricating oil cylinder has been exhausted even during chain travel.

  An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic cross-sectional view showing a main part of a lubricating oil automatic supply chain, FIG. 2 is a cross-sectional view of a pin before mounting a lubricating oil cylinder, and FIG. 3 is a sectional view of the lubricating oil cylinder.

  As shown in FIG. 1, the lubricating oil automatic oil supply type chain 1 is configured by connecting a pair of inner plates 2 and 2 and a pair of outer plates 5 and 5 with pins 6 on which bushes 3 are fitted. . That is, in the lubricating oil automatic oil supply type chain 1, both ends of the bushes 3 and 3 are fitted and fixed to a pair of bush holes 2a and 2a formed in the pair of inner plates 2, respectively. Both ends of the pins 6 and 6 are fitted and fixed to pin holes 5a and 5a formed in the pair of outer plates 5 and 5, respectively, so that the pins 6 and 6 are connected to the bushing. 3 and 3 are configured to be rotatably inserted.

  As shown in FIG. 2, an oil supply hole 7 that opens from the inside of the pin to the pin outer peripheral surface 6a is formed in a substantially central portion in the longitudinal direction of the pin 6, and the lubricating oil M can be supplied from the oil supply hole 7 to the pin outer peripheral surface 6a. It has become. Further, inside the pin 6, a hollow portion 9 having an opening at one end of the pin 6 and having a bottom portion 8 substantially in the center in the longitudinal direction of the pin is formed over the longitudinal direction of the pin. A recessed fitting portion 10 having a lubricating oil inlet 10a communicating with the oil supply hole 7 is formed.

  A lubricating oil cylinder 11 having a length approximately equal to the length of the hollow portion is detachably attached to the hollow portion 9. A protruding portion 12 having a lubricating oil outlet 12a is formed at the tip of the lubricating oil cylinder 11, and when the lubricating oil cylinder 11 is attached to the hollow portion 9, the protruding portion 12 closely fits into the recessed fitting portion 10, The lubricating oil outlet 12a of the protruding portion 12 and the lubricating oil inlet 10a of the recessed fitting portion 10 are connected, and a lubricating oil storage chamber 15 and an oil supply hole 7 to be described later communicate with each other. In this case, you may make it attach a backflow prevention valve to the lubricating oil outlet 12a or the oil supply hole 17 of the vicinity into which the protrusion part 12 fits. In addition, the code | symbol 10b, 12b in FIG. 2 or FIG. 3 is a thread part, respectively.

  The lubricating oil cylinder 11 is provided with a gas filling chamber 14 partitioned by a slidable piston 13 and a lubricating oil storage chamber 15, and at the rear end thereof, the gas is gradually released into the gas filling chamber 14. A gas generator 16 with a function is provided.

  The gas generator 16 includes a gas outlet 16a, and the gas generator 16 is provided with a dry cell type gas generator 17 that is generally commercially available. The gas generator 17 includes a gas generating material 18 and a dry battery 19. Cords 20a and 20b are connected to the cathode side and the anode side of the dry battery 19, respectively. The cord 20a is connected to a contact 13a attached to the piston 13, and the cord 20b is inserted into the lubricating oil cylinder 11 through a pilot lamp 21. It is connected to a contact 11a attached to the tip. The gas generating substance is a substance such as a hydrogen storage alloy containing magnesium, lithium, etc., and generates hydrogen by heat generation.

  Hydrogen gas gradually generated by the gas generator 17 is supplied from the gas outlet 16 a to the gas filling chamber 14, and the piston 13 is moved by the gas pressure of the gas accumulated in the gas filling chamber 14. The lubricating oil M is supplied from the oil supply hole 7 to the pin outer peripheral surface 6a. In this case, when the piston 13 moves and the lubricating oil M in the lubricating oil reservoir 15 is pushed out and exhausted, the contact 13a attached to the piston 13 and the contact 11a attached to the tip of the lubricating oil cylinder 11 come into contact. The pilot lamp 21 is turned on.

  The lubricating oil automatic oil supply type chain of the present invention having the above-described configuration has the following special effects. Inside the pin 6 constituting the lubricating oil automatic oil supply type chain 1, a hollow portion 9 having an opening at one end of the pin 6 and having a bottom portion 8 substantially in the center in the longitudinal direction of the pin is formed over the longitudinal direction of the pin. Therefore, the length of the lubricating oil cylinder 11 attached to the hollow portion 9 of the pin can be made substantially equal to the length of the hollow portion, and as a result, the lubricating oil storage chamber 15 becomes larger, so that the lubricating oil A considerable amount of lubricating oil M can be stored in the cylinder, and frequent lubricating oil replenishment can be avoided.

  Further, a concave fitting portion 10 having a lubricating oil inlet 10a communicating with the oil supply hole 7 in the pin is formed in the bottom portion 8 of the hollow portion 9, and a lubricating oil cylinder 11 is detachably mounted in the hollow portion 9 for lubrication. A protruding portion 12 having a lubricating oil outlet 12a is formed at the tip of the oil cylinder 11, and the protruding portion 12 is closely fitted to the recessed fitting portion 10 via the screw portions 10b and 12b. 11 can be of a cartridge type, the lubricating oil M can be replenished only by replacing the lubricating oil cylinder 11, and the replenishment maintenance can be improved.

  The lubricating oil cylinder 11 includes a gas filling chamber 14 partitioned by a slidable piston 13 and a lubricating oil storage chamber 15, and has a slow release function that gradually releases gas to the gas filling chamber 14 at the rear end. The gas generator 16 is provided with a dry cell type gas generator 17, and the gas gradually generated from the gas generator 17 is supplied to the gas filling chamber 14 and accumulated in the gas filling chamber 14. Since the piston 13 is moved by the gas pressure of the gas, the lubricant M is kept at a constant pressure until the lubricating oil M in the lubricating oil cylinder 11 is depleted by the movement of the piston 13 with the gas pressure gradually released from the gas generator 16. Can be supplied to the sliding portion of the pin outer peripheral surface 6a. Further, since the lubricating oil M can be stably supplied to the pin outer peripheral surface 6a, the automatic lubricating oil supply chain 1 can be used for heavy loads for lifting and transporting heavy loads such as bucket chains and automobiles that consume a large amount of lubricating oil. It can be suitably used as a chain.

  The lubricating oil cylinder 11 is provided with a display mechanism for displaying that the lubricating oil M in the lubricating oil storage chamber 15 has been depleted, and this display mechanism includes a contact 13 a provided in conjunction with the piston 13, and a lubricating oil cylinder. Since the pilot lamp 21 is lit by contact energization with the contact 11a provided at the tip of the cylinder 11, it can be quickly determined that the lubricating oil M in the lubricating oil cylinder 11 has been exhausted even during chain running. can do.

It is a schematic sectional drawing which shows the principal part of the lubricating oil automatic oil supply type | mold chain of this invention Example. It is sectional drawing of the pin before mounting | wearing with a lubricating oil cylinder. It is sectional drawing of a lubricating oil cylinder. It is a schematic sectional drawing which shows the principal part of the conventional lubricating oil automatic oil supply type | mold chain.

DESCRIPTION OF SYMBOLS 1 Lubricant automatic oil supply type chain 2 Inner plate 2a Bushing hole 3 Bushing 4 Roller 5 Outer plate 5a Pin hole 6 Pin 6a Pin outer peripheral surface 7 Oiling hole 8 Bottom part 9 Hollow part 10 Recessed fitting part 10a Lubricating oil inlet 10b Screw part 11 Lubricating oil cylinder 11a Contact 12 Protruding part 12a Lubricating oil outlet 12b Screw part 13 Piston 13a Contact 14 Gas filling chamber 15 Lubricating oil storage chamber 16 Gas generator 16a Gas outlet 17 Gas generator 18 Gas generating substance 19 Dry batteries 20a, 20b Code 21 Pilot lamp M Lubricating oil

Claims (1)

The inner plate and the outer plate are connected by a pin on which a bush and / or a roller are fitted, and an oil supply hole that opens from the inside of the pin to the outer peripheral surface of the pin is formed at a substantially central portion in the longitudinal direction of the pin. In the lubricating oil automatic lubrication type chain that can supply lubricating oil from the hole to the pin outer peripheral surface,
Inside the pin, a hollow portion having an opening at one end of the pin and having a bottom portion approximately in the center in the longitudinal direction of the pin is formed over the longitudinal direction of the pin, and the lubricating oil communicating with the oil supply hole at the bottom portion A recessed fitting portion having an inflow port is formed,
The hollow part is detachably mounted with a lubricating oil cylinder having a length approximately equal to the length of the hollow part,
At the tip of the lubricating oil cylinder, a protruding portion having a lubricating oil outlet is formed, and the protruding portion is closely fitted to the recessed fitting portion,
The lubricating oil cylinder includes a gas filling chamber partitioned by a slidable piston, a lubricating oil storage chamber, and a gas generator that gradually releases gas into the gas filling chamber at a rear end portion.
The gas generator is provided with a dry cell type gas generator, and gas generated gradually from the gas generator is supplied to the gas filling chamber, and the piston is driven by the gas pressure of the gas accumulated in the gas filling chamber. Move
The lubricating oil cylinder is provided with a display mechanism for displaying that the lubricating oil in the lubricating oil reservoir is depleted,
The display mechanism is connected to the piston connected to the dry battery of the gas generator, and the contact mechanism is connected to the dry battery connected to the dry battery and connected to the dry battery. An automatic lubricating oil supply chain characterized in that a pilot lamp provided in a lubricating oil cylinder is turned on.

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