A single-side bent plate chain

Abstract

A single-sided bending plate chain relates to the technical field of chain transmission, including a chain body, wherein the chain body is formed by a plurality of inner link units and outer link units connected alternately, wherein the outer link unit includes two special-shaped outer link plates, one middle link plate and two pins, wherein the inner link unit includes two inner link plates and two special-shaped inner link plates, wherein the inner link unit and the outer link unit are alternately connected through pins, wherein the special-shaped outer link plates and the special-shaped inner link plates are respectively provided with straight edges g facing the same direction, and adjacent special-shaped outer link plates and adjacent special-shaped inner link plates are respectively used in conjunction with each other and limit the chain body to bend only to one side. The new type can realize single-sided bending under the premise of ensuring the normal lifting of the chain, and at the moment when the equipment unloads the goods, the chain will only bend to the outside when it rebounds to avoid hitting the oil cylinder. At the same time, the new type can appropriately improve the strength of the chain and extend its service life.

Description

Technical Field

[0001] The invention belongs to the technical field of chain transmission, and specifically relates to a single-side bent plate chain. Background Art

[0002] Leaf chains are mainly used in forklifts, lifts and other devices that need to lift heavy objects. The chain is installed on the mechanical equipment using the chain through the connecting parts at both ends. The entire chain generally does not work in a ring shape. The chain movement is generally powered by a cylinder and changes direction through a pulley (or groove wheel), thereby realizing the up and down movement of the fork (or platform).

[0003] However, in some models, since the chain is close to the oil cylinder, at the moment the fork unloads the goods, the chain vibrates and rebounds, occasionally hitting the oil cylinder. Over time, the oil cylinder will be cracked, causing oil leakage. Utility Model Content

[0004] In view of the problems of the prior art, the present invention discloses a single-side curved plate chain, which, under the premise of ensuring that the cargo fork can lift the cargo normally, makes the chain bend only to the outside (the oil cylinder is located inside) when it rebounds at the moment of unloading the cargo, so as to avoid hitting the oil cylinder. At the same time, the present invention can also improve the strength of the chain and extend its service life.

[0005] To achieve the above purpose, the technical solution of this novel invention is:

[0006] A single-sided bending plate chain comprises a chain body, wherein the chain body is formed by a plurality of inner link units alternately connected with outer link units, the outer link units comprise two special-shaped outer link plates, one middle link plate and two pins, the inner link units comprise two inner link plates and two special-shaped inner link plates, the inner link units and the outer link units are alternately connected via pins, the special-shaped outer link plates and the special-shaped inner link plates are respectively provided with straight edges g facing the same direction, adjacent special-shaped outer link plates and adjacent special-shaped inner link plates are respectively used in combination and limit the chain body to bend only to one side.

[0007] Preferably, in the outer link unit, two special-shaped outer link plates are arranged opposite to each other, and each special-shaped outer link plate is provided with a left-right symmetrical first mounting hole, the two first mounting holes d of the two special-shaped outer link plates are opposite to each other, a pin is connected between the two opposite first mounting holes d, both ends of the pin are interference fit with the first mounting holes d of the special-shaped outer link plates, both ends of the pin are rivet-headed, and the middle chain plate is provided with two second mounting holes d, the two second mounting holes d are sleeved on the two pins and are clearance-matched with the pins.

[0008] Preferably, in the inner link unit, two special-shaped inner link plates are arranged opposite to each other, and the outer surface of the special-shaped inner link plate fits with the inner surface of the special-shaped outer link plate on the same side of the left and right adjacent outer link units. The two inner link plates are respectively arranged on both sides of the middle link plate, and the two outer surfaces of the inner link plates respectively fit with the outer surface of the middle chain plate of the adjacent outer link unit and the inner surface of the special-shaped inner link plate on the same side of the inner link unit. The inner link plate and the special-shaped inner link plate are respectively provided with a third mounting hole d and a fourth mounting hole d which are symmetrical on both sides. The two third mounting holes d of the inner link plate and the two fourth mounting holes d of the special-shaped inner link plate are opposite to each other one by one. The third mounting hole d and the fourth mounting hole d are respectively sleeved on the pins of the adjacent outer link units and matched with the pin clearance.

[0009] Preferably, the middle chain plate and the inner chain plate have the same structural dimensions, and the inner chain plate and the middle chain plate are of an "∞"-shaped structure.

[0010] Preferably, the edge structure of the chain plate body of the special-shaped outer link plate and the special-shaped inner link plate is the same, both of which include arc a and arc aa arranged on the side away from the straight edge g, the edge of the chain plate body between the opposite ends of the arc a and arc aa constitutes a concave arc b, and the two ends of the concave arc b are respectively tangent to the ends of the arc a and arc aa; the left and right end edges of the chain plate body are respectively provided with arc e and arc ee, and the arc e and arc ee have the same radius and consistent direction; the two ends of the straight edge g are respectively transitioned to the adjacent arc e or arc ee with a fillet f or a fillet ff; the arc e and the end of the arc a are transitioned respectively through an outwardly protruding arc h and an inwardly concave arc i, and the arc ee and the end of the arc aa are transitioned through an inwardly concave arc c.

[0011] Preferably, in the chain body, the bottommost special-shaped outer link plate constitutes a first row of chain plate structures, in which adjacent special-shaped outer link plates are limited by arcs ee and e, and the adjacent special-shaped outer link plates are limited to bend only to the side away from the straight edge g;

[0012] The special-shaped inner link plates located at the lower side constitute the second row of chain plate structures. The directions of the arcs e and ee of the second row of chain plate structures are opposite to those of the arcs e and ee of the first row of chain plate structures. In the second row of chain plate structures, the adjacent special-shaped inner link plates are limited by the arcs ee and e, and the adjacent special-shaped inner link plates are limited to bend only to the side away from the straight edge g.

[0013] The inner chain plates located at the lower side constitute the third row of chain plate structures, the middle chain plates located in the middle constitute the fourth row of chain plate structures, and the inner chain plates located at the upper side constitute the fifth row of chain plate structures;

[0014] The special-shaped inner link plates located on the upper side constitute the sixth row of link plate structures. In the sixth row of link plate structures, the directions of the arcs e and ee are opposite to those of the arcs e and ee of the second row of link plate structures. Adjacent special-shaped inner link plates are limited by the arcs ee and e, and the adjacent special-shaped inner link plates are limited to bend only to the side away from the straight edge g.

[0015] The special-shaped outer link plate located at the upper end constitutes the seventh row of chain plate structure. In the seventh row of chain plate structure, the directions of arc e and arc ee are opposite to those of arc e and arc ee in the first row of chain plate structure. Adjacent special-shaped outer link plates are limited by arc ee and arc e, and the adjacent special-shaped outer link plates are limited to bend only to the side away from the straight edge g.

[0016] The beneficial effects of the new single-sided curved plate chain are:

[0017] The new type can achieve unilateral bending under the premise of ensuring the normal lifting of the chain. When the equipment unloads the goods, the chain will only bend to the outside (the cylinder is located on the inside) when it rebounds to avoid hitting the cylinder. At the same time, the new type can appropriately improve the strength of the chain and extend its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 , a schematic diagram of the overall structure of the novel device (the structure of the inner link unit and the outer link unit is also shown in the figure).

[0019] Figure 2 , schematic diagram of the exploded structure of the new outer link unit.

[0020] Figure 3 , schematic diagram of the decomposed structure of the new inner link unit.

[0021] Figure 4 , schematic diagram of the appearance of the new special-shaped inner link plate or special-shaped outer link plate (the top is a front view, and the bottom is a top view).

[0022] Figure 5 , schematic diagram of the appearance of the new inner chain plate and middle chain plate (the top is a front view, the bottom is a top view).

[0023] Figure 6 , schematic diagram of the arrangement principle of the new chain plate.

[0024] Figure 7 , the bending effect diagram of the new chain.

[0025] 01. Inner link unit; 02. Outer link unit; 03. Special-shaped outer link plate; 04. Middle link plate; 05. Pin shaft; 06. Special-shaped inner link plate; 07. Inner link plate. DETAILED DESCRIPTION

[0026] The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0027] The following embodiments may be understood as a part of a local structure or method that is expressed separately in the present invention, or may be understood as a combination of the embodiments to explain the connotation of a larger structure or method of the present invention.

[0028] Example 1

[0029] A single-sided curved plate chain, such as Figure 1-7 As shown, it includes a chain body, which is formed by a plurality of inner link units 01 and outer link units 02 alternately connected, the outer link unit 02 includes two special-shaped outer link plates 03, one middle link plate 04 and two pins 05, the inner link unit 01 includes two inner link plates 07 and two special-shaped inner link plates 06, the inner link units 01 and the outer link units 02 are alternately connected through pins, the special-shaped outer link plates 03 and the special-shaped inner link plates 06 are respectively provided with straight edges g facing the same direction, adjacent special-shaped outer link plates 03 and adjacent special-shaped inner link plates 06 are respectively used in combination and limit the chain body to bend only to one side.

[0030] like Figure 6 As shown, the chain plates of the inner link unit 01 and the outer link unit 02 are arranged in 7 rows. It should be pointed out that this embodiment only limits the special-shaped outer link plate 03 and the special-shaped inner link plate 06 to be respectively provided with straight edges g facing the same direction, and the structures of other parts of the special-shaped outer link plate 03 and the special-shaped inner link plate 06 can be selected from various common structures in the prior art, which only need to meet the following conditions: the adjacent special-shaped outer link plates 03 and the adjacent special-shaped inner link plates 06 are used in conjunction with each other and limit the chain body to bend only to one side. By setting as above, the chain body can be prevented from bending to one side of the oil cylinder, thereby avoiding damage to the oil cylinder.

[0031] Example 2

[0032] like Figure 2 As shown, in the outer link unit 02, two special-shaped outer link plates 03 are arranged opposite to each other, and each special-shaped outer link plate 03 is provided with a left-right symmetrical first mounting hole d, the two first mounting holes d of the two special-shaped outer link plates 03 are opposite to each other, and a pin 05 is connected between the two opposite first mounting holes d, and both ends of the pin 05 are interference fit with the first mounting holes d of the special-shaped outer link plates 03 to ensure the frame of the outer link 02, and the rivet heads at both ends of the pin 05 are processed to prevent the special-shaped outer link plates 03 from falling off, and the middle chain plate 04 is provided with two second mounting holes d, and the two second mounting holes d are sleeved on the two pins 05 and are clearance-matched with the pins 05.

[0033] Example 3

[0034] like Figure 3 As shown, in the inner link unit 01, two special-shaped inner link plates 06 are arranged opposite to each other, and the outer surface of the special-shaped inner link plate 06 is fitted with the inner surface of the special-shaped outer link plate 03 on the same side of the left and right adjacent outer link units 02. Two inner link plates 07 are respectively arranged on both sides of the middle chain plate, and the two outer surfaces of the inner link plate are respectively fitted with the outer surface of the middle chain plate of the adjacent outer link unit 02 and the inner surface of the special-shaped inner link plate 06 on the same side of the inner link unit. The inner link plate 07 and the special-shaped inner link plate 06 are respectively provided with a third mounting hole d and a fourth mounting hole d which are symmetrical on the left and right. The two third mounting holes d of the inner link plate 07 and the two fourth mounting holes d of the special-shaped inner link plate 06 are opposite to each other one by one. The third mounting hole d and the fourth mounting hole d are respectively sleeved on the pin shaft 05 of the adjacent outer link unit 02 and are clearance-matched with the pin shaft 05 to realize the series connection of the inner and outer links and ensure the flexibility of the hinge.

[0035] Example 4

[0036] like Figure 2 , 3 As shown, the middle link plate 04 and the inner link plate 07 have the same structural dimensions.

[0037] Example 5

[0038] like Figure 4 As shown, the edge structure of the chain plate body of the special-shaped outer link plate 03 and the special-shaped inner link plate 07 is the same, both of which include arc a and arc aa arranged on the side away from the straight edge g, and the edge of the chain plate body between the opposite ends of the arc a and arc aa constitutes a concave arc b, and the two ends of the concave arc b are respectively tangent to the ends of the arc a and arc aa; the left and right end edges of the chain plate body are respectively provided with arc e and arc ee, and the arc e and arc ee have the same radius and consistent direction; the two ends of the straight edge g are respectively transitioned to the adjacent arc e or arc ee with a fillet f or a fillet ff; the arc e and the end of the arc a are transitioned respectively through the outwardly convex arc h and the inwardly concave arc i, and the arc ee and the end of the arc aa are transitioned through the inwardly concave arc c.

[0039] Example 6

[0040] like Figure 2 , 3 As shown, the inner link plate 07 and the middle link plate 04 are of an "∞"-shaped structure.

[0041] Example 7

[0042] like Figure 6As shown, in the chain body, the bottommost special-shaped outer link plate 03 constitutes a first row of chain plate structures, in which adjacent special-shaped outer link plates 03 are limited by arcs ee and e, and the adjacent special-shaped outer link plates 03 are limited to bend only to the side away from the straight edge g;

[0043] The special-shaped inner link plates 06 located at the lower side constitute the second row of chain plate structures. The directions of the arcs e and ee of the second row of chain plate structures are opposite to those of the arcs e and ee of the first row of chain plate structures. In the second row of chain plate structures, the adjacent special-shaped inner link plates 06 are limited by the arcs ee and e, and the adjacent special-shaped inner link plates 06 are limited to bend only to the side away from the straight edge g.

[0044] The inner link plate 07 located on the lower side constitutes the third row of chain plate structure, the middle link plate 04 located in the middle constitutes the fourth row of chain plate structure, and the inner link plate 07 located on the upper side constitutes the fifth row of chain plate structure; the special-shaped inner link plate 07 located on the upper side constitutes the sixth row of chain plate structure, in the sixth row of chain plate structure, the directions of arc e and arc ee are opposite to the directions of arc e and arc ee of the second row of chain plate structure, and adjacent special-shaped inner link plates 06 are limited by arc ee and arc e, and limit the adjacent special-shaped inner link plates 06 to bend only to the side away from the straight edge g; the special-shaped outer link plate 07 located at the upper end constitutes the seventh row of chain plate structure, in the seventh row of chain plate structure, the directions of arc e and arc ee are opposite to the directions of arc e and arc ee of the first row of chain plate structure, and adjacent special-shaped outer link plates 03 are limited by arc ee and arc e, and limit the adjacent special-shaped outer link plates 03 to bend only to the side away from the straight edge g.

[0045] As described in Example 1, the special-shaped outer link plate 03 and the special-shaped inner link plate 06 are respectively provided with straight edges g facing the same direction, so the arrangement of this embodiment realizes the function that the chain body can only bend to one side.

[0046] The use principle of this new model:

[0047] During installation, the edge b of the special-shaped outer and inner link plates of the chain body is attached to the pulley for change of direction. Through the above design and arrangement, due to the mutual fit restriction between the arcs e and ee of the edges of the special-shaped outer and inner link plates, the hinges of the chain body can only rotate toward the side away from the straight edge g, ensuring that the chain body can only bend in the opposite direction when it rebounds, thereby avoiding the impact of the inner cylinder. The structural arrangement provided in Example 7 of the present invention can ensure the optimal flexibility of the chain hinge. Other arrangements can also achieve unilateral bending of the chain by borrowing the ideas of the present invention, and should be regarded as equivalent replacements of the same technology.

Claims

1. A single-sided bending plate chain, characterized in that: it includes a chain body, the chain body is formed by a plurality of inner link units and outer link units alternately connected, the outer link unit includes two special-shaped outer link plates, one middle link plate and two pins, the inner link unit includes two inner link plates and two special-shaped inner link plates, the inner link units and the outer link units are alternately connected through pins, the special-shaped outer link plates and the special-shaped inner link plates are respectively provided with straight edges g facing the same direction, adjacent special-shaped outer link plates and adjacent special-shaped inner link plates are respectively used in combination and limit the chain body to bend only to one side.

2. A single-side curved plate chain according to claim 1, characterized in that: In the outer link unit, two special-shaped outer link plates are arranged opposite to each other, and each special-shaped outer link plate is provided with a left-right symmetrical first mounting hole, the two first mounting holes d of the two special-shaped outer link plates are opposite to each other, and a pin is connected between the two opposite first mounting holes d, the two ends of the pin are interference fit with the first mounting holes d of the special-shaped outer link plate, and the two ends of the pin are rivet headed, and the middle chain plate is provided with two second mounting holes d, and the two second mounting holes d are sleeved on the two pins and are clearance-matched with the pins.

3. A single-side curved plate chain according to claim 2, characterized in that: In the inner link unit, two special-shaped inner link plates are arranged opposite to each other, and the outer surface of the special-shaped inner link plate fits with the inner surface of the special-shaped outer link plate on the same side of the left and right adjacent outer link units. The two inner link plates are respectively arranged on both sides of the middle link plate, and the two outer surfaces of the inner link plate fit with the outer surface of the middle chain plate of the adjacent outer link unit and the inner surface of the special-shaped inner link plate on the same side of the inner link unit. The inner link plate and the special-shaped inner link plate are respectively provided with a third mounting hole d and a fourth mounting hole d which are symmetrical on the left and right. The two third mounting holes d of the inner link plate and the two fourth mounting holes d of the special-shaped inner link plate are opposite to each other one by one. The third mounting hole d and the fourth mounting hole d are respectively sleeved on the pins of the adjacent outer link units and matched with the pin clearance.

4. A single-side curved plate chain as claimed in claim 3, characterized in that: The middle chain plate and the inner chain plate have the same structural dimensions, and the inner chain plate and the middle chain plate are of an "∞"-shaped structure.

5. A single-side curved plate chain as claimed in claim 4, characterized in that: The edge structures of the chain plate bodies of the special-shaped outer chain plate and the special-shaped inner chain plate are the same, and both include arc a and arc aa arranged on the side away from the straight edge g. The edge of the chain plate body between the opposite ends of the arc a and arc aa constitutes a concave arc b, and the two ends of the concave arc b are respectively tangent to the ends of the arc a and arc aa; the left and right end edges of the chain plate body are respectively provided with arc e and arc ee, and the arc e and arc ee have the same radius and consistent direction; the two ends of the straight edge g are respectively transitioned to the adjacent arc e or arc ee with a fillet f or a fillet ff; the arc e and the end of the arc a are transitioned respectively through an outwardly convex arc h and an inwardly concave arc i, and the arc ee and the end of the arc aa are transitioned through an inwardly concave arc c.

6. A single-side curved plate chain according to claim 5, characterized in that: In the chain body, the bottommost special-shaped outer link plate constitutes a first row of chain plate structures, in which adjacent special-shaped outer link plates are limited by arcs ee and e, and the adjacent special-shaped outer link plates are limited to bend only to the side away from the straight edge g; The special-shaped inner link plates located at the lower side constitute the second row of chain plate structures. The directions of the arcs e and ee of the second row of chain plate structures are opposite to those of the arcs e and ee of the first row of chain plate structures. In the second row of chain plate structures, the adjacent special-shaped inner link plates are limited by the arcs ee and e, and the adjacent special-shaped inner link plates are limited to bend only to the side away from the straight edge g. The inner chain plates located at the lower side constitute the third-row chain plate structure, the middle chain plates located in the middle constitute the fourth-row chain plate structure, and the inner chain plates located at the upper side constitute the fifth-row chain plate structure; The special-shaped inner link plates located on the upper side constitute the sixth row of link plate structures. In the sixth row of link plate structures, the directions of the arcs e and ee are opposite to those of the arcs e and ee of the second row of link plate structures. Adjacent special-shaped inner link plates are limited by the arcs ee and e, and the adjacent special-shaped inner link plates are limited to bend only to the side away from the straight edge g. The special-shaped outer link plate located at the upper end constitutes the seventh row of chain plate structure. In the seventh row of chain plate structure, the directions of arc e and arc ee are opposite to those of arc e and arc ee in the first row of chain plate structure. Adjacent special-shaped outer link plates are limited by arc ee and arc e, and the adjacent special-shaped outer link plates are limited to bend only to the side away from the straight edge g.

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