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Rigid chain sliding executing mechanism

An actuator and rigid technology, applied in the field of linear actuators, can solve the problems of insufficient rigidity, high processing cost, loss of locking effect, etc., and achieve the effect of reducing the difficulty and cost of processing, long service life, and safe and reliable work.

Inactive Publication Date: 2013-11-27
GUANGZHOU GREED ENG MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned locking structure formed by the semicircular gaps on the adjacent two outer chain plates of the guide pins obviously has the following deficiencies: 1. The shape and diameter deviation of the guide pins and the semicircular gaps and the guide pins and The requirements for the position deviation of the semicircular notch are very strict, and the processing cost is high; 2. There is no clear locking structure, and only a little interference generated by the semicircular notch on the outer chain plate leaving the guide pin shaft ensures that the entire chain is in place. The stiffness in a straight line is obviously insufficient. Once the external force acting on the chain is slightly larger, its locking structure will become the weakest part of the entire chain and be destroyed; will be worn and lose the locking effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0029] This embodiment is a push-pull actuator for vertical jacking loads.

[0030] see figure 1 , the push-pull actuator in this example consists of a rigid chain 1 and a driver 2, where the rigid chain 1 is stored horizontally.

[0031] see figure 2 and combine Figure 7 with figure 1 , Rigid chain 1 is made up of several chain links, and each chain link is mainly made up of a pair of outer chain plates 3, a pair of inner chain plates 4, a drive pin 5, two guide pins 6 and a locking mechanism. Wherein, the transmission pin shaft 5 is arranged on one side of the chain link, and a pair of outer chain plates 3 and a pair of inner chain plates 4 are hinged together by the head; two guide pin shafts 6 are arranged on the other side of the chain link A pair of outer link plates 3 and a pair of inner link plates 4 are respectively worn together from the middle; the locking mechanism is arranged in the middle of the overlapping parts of the outer link plates 3 and the inner l...

example 2

[0038] This example is an improved solution of Example 1.

[0039] see Figure 8 , the sliding hole 7 on the outer chain plate 3 is provided with a notch 9 where the sliding pin 8 can enter or withdraw from one end near the guide pin shaft 6 .

[0040] see Figure 10 , correspondingly, the bottom surface of the rigid linear motion guide section 17-3 of the guide groove 17 is provided with two protrusions 18, and the opposite inner surfaces on the two protrusions 18 are parallel to each other to form a guide chute 19, which guides the chute 19 from the bottom On the other hand, it inclines from the side close to the guide pin 6 to the side close to the drive pin 5. During the movement of the rigid chain 1 in the rigid linear motion guide section 17-3 of the guide groove 17, the guide The chute 19 forces the sliding pin 8 to slide from one end to the other in the sliding hole 7 . Depend on Figure 10 It can be seen that the bottom surface of the flexible linear motion guide ...

example 3

[0044] This example is another drive scheme (back drive) for the push-pull actuator described in Example 2 for vertical jacking loads.

[0045] see Figure 11 , this program uses the guide pin 6 instead of the drive pin 5 to drive the rigid chain 1, the sprocket 16 is located on the right side of the rigid linear motion guide section 17-3 of the guide groove 17 and meshes with the guide pin 6, thereby driving the rigid chain 1 Move up and down in the guide groove 17.

[0046] In this example, the implementation methods other than the above are all the same as Example 2.

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PUM

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Abstract

The invention relates to a rigid chain sliding executing mechanism. The rigid chain sliding executing mechanism is composed of a rigid chain and a drive, and is characterized in that all chain links in the rigid chain are provided with locking mechanisms respectively in the middles of the lap joint positions of internal chain plates and internal chain plates, and each locking mechanism is composed of transverse strip sliding holes and sliding pins, wherein the transverse strip sliding holes are formed in the corresponding positions of the external chain plates and the internal chain plates and the sliding pins penetrate through the sliding holes and can slide in the sliding holes back and forth. One end of each sliding hole formed in each external chain plate is provided with a notch through which the sliding pins can enter or leave from the sliding holes; the sliding pins are located in the middle between the pair of internal chain plates and are provided with two nuts, a compression spring is arranged between each nut and the internal chain plates; the two ends of the compression springs are respectively extruded on the internal chain plates and the nuts; an inclined guide groove ensuring that the sliding pins slide from one end to the other end in the sliding holes is formed in a guide groove on the inner surface of a guide plate in the drive.

Description

technical field [0001] The invention relates to a linear actuator, in particular to an actuator using a rigid transmission chain, which is suitable for the occasion of pushing a load with a large stroke. Background technique [0002] Rigid chain (also known as drag chain) is a special chain, which has both the flexibility of ordinary chain and certain rigidity, so the actuator composed of rigid chain and driver can replace hydraulic cylinder, air cylinder and electric push rod etc. are widely used in occasions that require a large stroke to push the load, so as to reduce the volume of the equipment and save space. Existing rigid chain mainly contains two big classes, and a class is the rigid chain of single row pin shaft, and another kind is the rigid chain of double row pin shaft. [0003] The inner chain plate or the outer chain plate of the above-mentioned rigid chain with single row of pins is a limiting thrust plate. When the chain is pushed, the adjacent two limiting ...

Claims

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Application Information

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IPC IPC(8): F16H7/06F16G13/06
Inventor 江帆彭东华方伟中
Owner GUANGZHOU GREED ENG MACHINERY