Chain with pull rod

Abstract

The utility model relates to the technical field of pull rod chains, in particular to a chain with a pull rod, which comprises an outer chain plate, an inner chain plate and a fixing plate, the inner chain plate is arranged on one side of the outer chain plate, a round hole penetrating through the outer chain plate is arranged on one side of the outer chain plate, a groove is arranged on one side of the outer chain plate, a pin rod penetrates through the round hole, and the pin rod is arranged in the groove. A hexagonal groove is formed in one end of the pin rod, a fastening plate is connected to the outer side of the pin rod in a threaded mode, an anti-loosening plate is fixedly connected to one side of the fastening plate, a convex ball is fixedly connected to the side, away from the fastening plate, of the anti-loosening plate, and a lining is arranged on the outer side of the pin rod. When a certain chain link of the pull rod chain is damaged or needs to be detached due to other reasons, the detaching difficulty can be lowered, the pin rod can be detached from the position between the inner chain plate and the outer chain plate through a hexagon wrench, the damaged chain link can be replaced or detached, and the replacing difficulty is lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of pull rod chains, in particular to a chain with a pull rod. Background Art

[0002] A tie rod chain is a transmission chain, usually composed of a series of connecting parts, which are connected to each other through hinges to form the overall structure of the chain. The tie rod chain is mainly used in construction machinery such as forklifts. The tie rod chain is also called a plate chain. Both ends of the chain have a tie rod structure. The entire chain is packed and maintained with grease to prevent rust and damage caused by corrosion. Each cross-sectional area of ​​the chain has a very high tensile strength and can withstand pressure and different extreme conditions.

[0003] When the pull rod chain is used on a forklift, the chain needs to be maintained periodically. However, due to long-term and overloaded use, the links of the pull rod chain are easily damaged. Traditional chains are riveted, and it is troublesome to replace damaged links. Secondly, during the use of the pull rod chain, since the forklift transports goods, the screw rod is easily hit by the goods, resulting in damage to the screw threads. Therefore, a chain with a pull rod is proposed to address the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a chain with a pull rod to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A chain with a pull rod comprises an outer link plate, an inner link plate and a fixed plate, wherein an inner link plate is provided on one side of the outer link plate, a circular hole penetrating the outer link plate is provided on one side of the outer link plate, a groove is provided on one side of the outer link plate, a pin rod passes through the circular hole, one end of the pin rod is provided with a hexagonal groove, a fastening plate is threadedly connected to the outer side of the pin rod, a loosening prevention plate is fixedly connected to one side of the fastening plate, a convex ball is fixedly connected to the side of the loosening prevention plate away from the fastening plate, a bushing is provided on the outer side of the pin rod, a connecting plate is rotatably connected to the outer side of the bushing, an end of the connecting plate away from the pin rod is fixedly connected to the fixing plate, an end of the fixing plate away from the connecting plate is fixedly connected to a screw, one end of the fixing plate is fixedly connected to a threaded tube, a protective tube is threadedly connected to the outer side of the threaded tube, and a fastening nut is threadedly connected to the outer side of the screw.

[0007] Preferably, a circular hole penetrating the inner link plate is provided on one side of the inner link plate, and two circular holes are provided on the outer side of an inner link plate.

[0008] Preferably, one side of the anti-loosening plate has six convex balls, and the convex balls are arrayed outside the circular hole.

[0009] Preferably, the number of the connecting plates is four, and two connecting plates are symmetrically arranged at one end of the fixed plate.

[0010] Preferably, the diameter of the threaded tube is larger than the diameter of the screw, and the length of the protection tube is smaller than the length of the screw.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the utility model, by providing the pin rod, hexagonal groove, anti-loosening plate, convex ball, fastening plate, round hole and groove, when a link of the pull rod chain is damaged or the link needs to be disassembled for other reasons, the difficulty of disassembly can be reduced. By using a hexagonal wrench, the pin rod can be removed from between the inner and outer chain plates, and the damaged link can be replaced or removed, reducing the difficulty of replacement;

[0013] 2. In the utility model, the screw can be protected by the setting of the fixing plate, the threaded tube and the protective tube. The protective tube and the threaded tube are connected by threads. By adding the protective tube, the risk of the cargo hitting the screw threads can be reduced, thereby protecting the screw threads. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 For this utility model Figure 1 A schematic diagram of the structure at A;

[0016] Figure 3 This is a schematic diagram of the structure of the outer chain plate of the utility model;

[0017] Figure 4 This is a schematic diagram of the fastening plate structure of the utility model;

[0018] Figure 5 It is a half-section schematic diagram of the pin rod structure of the utility model.

[0019] In the figure: 1. outer link plate; 2. inner link plate; 3. pin rod; 4. hexagonal groove; 5. anti-loosening plate; 6. convex ball; 7. fastening plate; 8. round hole; 9. groove; 10. fixing plate; 11. connecting plate; 12. screw rod; 13. threaded tube; 14. protective tube; 15. fastening nut; 16. bushing. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0022] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0023] See also Figure 1-5 , the utility model provides a technical solution:

[0024] A chain with a pull rod comprises an outer link plate 1, an inner link plate 2 and a fixed plate 10, an inner link plate 2 is provided on one side of the outer link plate 1, a round hole 8 penetrating the outer link plate 1 is provided on one side of the outer link plate 1, a groove 9 is provided on one side of the outer link plate 1, a pin rod 3 passes through the round hole 8, one end of the pin rod 3 is provided with a hexagonal groove 4, a fastening plate 7 is threadedly connected to the outer side of the pin rod 3, an anti-loosening plate 5 is fixedly connected to one side of the fastening plate 7, a convex ball 6 is fixedly connected to the side of the anti-loosening plate 5 away from the fastening plate 7, a bushing 16 is provided on the outer side of the pin rod 3, a connecting plate 11 is rotatably connected to the outer side of the bushing 16, an end of the connecting plate 11 away from the pin rod 3 is fixedly connected to the fixing plate 10, an end of the fixing plate 10 away from the connecting plate 11 is fixedly connected to a screw 12, one end of the fixing plate 10 is fixedly connected to a threaded tube 13, a protective tube 14 is threadedly connected to the outer side of the threaded tube 13, and a fastening nut 15 is threadedly connected to the outer side of the screw 12.

[0025] A circular hole 8 penetrating the inner link plate 2 is provided on one side of the inner link plate 2, and two circular holes 8 are provided on the outer side of an inner link plate 2; six convex balls 6 are provided on one side of the anti-loosening plate 5, and the convex balls 6 are arrayed on the outer side of the circular hole 8; the number of connecting plates 11 is four, and the two connecting plates are symmetrically arranged at one end of the fixed plate 10; the diameter of the threaded tube 13 is larger than the diameter of the screw rod 12, and the length of the protective tube 14 is smaller than the length of the screw rod 12.

[0026] Working process: This device is mainly used in the field of forklifts. Since the goods carried by forklifts are heavy, the tensile strength of this device is high and can cope with large workloads. This device mainly consists of an outer chain plate 1, an inner chain plate 2, a pin rod 3, a connecting plate 11, a fixing plate 10 and a screw rod 12. The screw rods 12 at both ends of the chain are fixed in appropriate positions by fastening nuts 15. There are three outer chain plates 1 in the cross section of the chain. There are two parallel inner chain plates 2 between the two outer chain plates 1. The circular holes 8 on the outer chain plates 1 and the inner chain plates 2 are placed concentrically. The pin rod 3 is inserted from the circular hole 8. The inner plate 5 and the outer plate 5 are connected by a screw thread. The outer plate 5 and the inner plate 5 are connected by a screw thread. The screw thread 16 is provided on the outer side of the pin rod 3. The sleeve 16 is located between the pin rod 3 and the inner and outer chain plates 2 and 1, and plays a role in protecting the chain plates and the pin rod 3 and reducing the wear on the pin rod 3. There is also an array of grooves 9 on the outer side of the circular hole 8. After the pin rod 3 passes through the circular hole 8, the fastening plate 7 will be threadedly connected to the outer side of the pin rod 3. Since the anti-loosening plate 5 and the fastening plate 7 are fixedly connected, after the convex ball 6 on one side of the anti-loosening plate 5 enters the groove 9, a hexagonal wrench can be used to pass through the hexagonal slot 4 to achieve a tight threaded connection between the pin rod 3 and the fastening plate 7. Embedded in the groove 9, it can prevent the fastening plate 7 from loosening or falling off after long-term use, and maintain the connection between the inner link plate 1 and the outer link plate 2. A pull rod is provided at both ends of the chain, and a connecting plate 11 is arranged between the outer link plates 1. The two are connected by a pin rod 3 and the fastening plate 7. A fixing plate 10 is provided at the other end of the connecting plate 11. A screw rod 12 is provided on the side of the fixing plate 10 away from the connecting plate 11. A fastening nut 15 is threadedly connected to the outside of the screw rod 12. A threaded tube 13 is provided on the side of the fixing plate 10 close to the screw rod 12. The straightness of the threaded tube 13 The diameter is larger than the screw 12, and the protection tube 14 and the threaded tube 13 are threadedly connected. The protection tube 14 can protect the internal screw 12 to prevent external impact from directly hitting the thread of the screw 12 and causing irreversible damage to the screw 12. When the link of the pull rod chain needs to be replaced or the length of the chain needs to be changed, the pin rod 3 and the fastening plate 7 at the corresponding position are separated, the pull rod chain can be disassembled, and the link of the disassembled part can be removed or replaced, which can reduce the difficulty of chain maintenance and reduce the cost of chain use.

[0027] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chain with a pull rod, comprising an outer link plate (1), an inner link plate (2) and a fixed plate (10), characterized in that: An inner link plate (2) is provided on one side of the outer link plate (1), a round hole (8) penetrating the outer link plate (1) is provided on one side of the outer link plate (1), a groove (9) is provided on one side of the outer link plate (1), a pin rod (3) passes through the round hole (8), one end of the pin rod (3) is provided with a hexagonal groove (4), a fastening plate (7) is threadedly connected to the outer side of the pin rod (3), an anti-loosening plate (5) is fixedly connected to one side of the fastening plate (7), a convex ball (6) is fixedly connected to the anti-loosening plate (5) on the side away from the fastening plate (7), and the pin rod (3) is threadedly connected to the outer side of the pin rod (3), and a hexagonal groove (4) is provided at one end of the pin rod (3). A bushing (16) is provided on the outside of the rod (3), a connecting plate (11) is rotatably connected to the outside of the bushing (16), an end of the connecting plate (11) away from the pin rod (3) is fixedly connected to a fixing plate (10), an end of the fixing plate (10) away from the connecting plate (11) is fixedly connected to a screw rod (12), one end of the fixing plate (10) is fixedly connected to a threaded tube (13), the outer side of the threaded tube (13) is threadedly connected to a protective tube (14), and the outer side of the screw rod (12) is threadedly connected to a fastening nut (15).

2. A chain with a pull rod according to claim 1, characterized in that: A circular hole (8) penetrating the inner link plate (2) is provided on one side of the inner link plate (2), and two circular holes (8) are provided on the outer side of one inner link plate (2).

3. A chain with a pull rod according to claim 1, characterized in that: One side of the anti-loosening plate (5) has six convex balls (6), and the convex balls (6) are arranged in an array outside the circular hole (8).

4. A chain with a pull rod according to claim 1, characterized in that: The number of the connecting plates (11) is four, and the two connecting plates (11) are symmetrically arranged at one end of the fixing plate (10).

5. A chain with a pull rod according to claim 1, characterized in that: The diameter of the threaded tube (13) is greater than the diameter of the screw rod (12), and the length of the protective tube (14) is less than the length of the screw rod (12).

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