Rolling-free plate-type chain

Abstract

The utility model provides a rolling-free plate type chain which comprises a pin shaft, two outer chain plates sleeved on the pin shaft in a penetrating mode and two inner chain plates located between the two outer chain plates, the pin shaft is fixedly connected with the outer chain plates, and a U-shaped clamping sleeve located between the two inner chain plates is arranged outside the pin shaft in a buckling mode. The outer side wall of the U-shaped clamping sleeve is fixedly connected with abrasion-resistant teeth distributed in an arrayed mode, and the abrasion-resistant teeth are detachably connected with the pin shaft. According to the wear-resistant chain, the U-shaped clamping sleeve located between the two inner chain plates is buckled on the pin shaft, the wear-resistant teeth are fixedly arranged on the periphery of the U-shaped clamping sleeve, the U-shaped clamping sleeve is detachably connected with the pin shaft, when the wear-resistant teeth are worn, the U-shaped clamping sleeve can be detached to replace other wear-resistant teeth, and compared with the prior art, the wear-resistant chain has the function of replacing the wear-resistant teeth; and the service life of the chain is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to chain technology field, and specifically for a no -roll formula plate chain. BACKGROUND

[0002] The inner chain plate and the outer chain plate of the plate chain in the prior art are the same thickness, therefore, in order to match the sprocket tooth width when the chain engages with the sprocket, two or more than two inner chain plates of the same shape and size need to be stacked between the two outer chain plates, the precision requirement of the inner chain plate stacking assembly is high, and the damage of individual inner chain plates will affect the normal operation of the chain, and the failure rate is high.

[0003] The utility model discloses a high -strength no -roll formula plate chain, including device body, device body includes outer chain plate, inner chain plate and pin shaft, and the outer chain plate is provided with two groups of opposites, and the both sides of each group of outer chain plate are all set up hole groove, and the pin shaft is fixed in the hole groove structure, and the outside between adjacent outer chain plates is provided with the inner chain plate, and the both ends of inner chain plate are set up the empty slot structure, and the both ends of pin shaft are through hole groove structure and empty slot structure, and the outside surface of pin shaft is set up wear -resisting tooth, and the inside surface middle part of outer chain plate and inner chain plate is provided with wear -resisting layer, in the utility model, adopt carburizing and add wear -resisting structure's mode, strengthen the structural strength of device body, and then prolong the use time.

[0004] However, the above-mentioned prior art still has the following problems in use: 1, the wear-resistant teeth are arranged around the outer periphery of the pin shaft, in the actual use process, the pin shaft and the outer chain plate are fixedly connected, therefore, part of the wear-resistant teeth on the outer periphery of the pin shaft participate in work, other wear-resistant teeth cannot be fully utilized, and the wear-resistant teeth participating in work are inconvenient to replace after long-time use; 2, the wear-resistant teeth are fixedly arranged on the pin shaft, which has a large manufacturing difficulty, and further increases the manufacturing difficulty of the entire plate chain for the multiple rows of chain.

[0005] Therefore, the utility model provides a no -roll formula plate chain. UTILITY MODEL CONTENTS

[0006] In view of the deficiencies of the prior art, the utility model aims to provide a no -roll formula plate chain to solve the problems in the background art, which has the functions of replacing wear-resistant teeth and reducing manufacturing difficulty.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a rollerless plate chain, comprising a pin and two outer chain plates sleeved on the pin, and two inner chain plates located between the two outer chain plates. The pin and the outer chain plates are fixedly connected. A U-shaped retainer is fastened to the outside of the pin and located between the two inner chain plates. Wear-resistant teeth are fixedly connected to the outer wall of the U-shaped retainer. The U-shaped retainer and the pin are detachably connected.

[0008] Furthermore, the cross-section of the U-shaped sleeve is C-shaped, and the wear-resistant teeth are fixedly disposed on the outer peripheral wall of the U-shaped sleeve.

[0009] Furthermore, a positioning shaft is fixedly connected to the bottom of the U-shaped sleeve, and a positioning hole with an interference fit to the positioning shaft is provided through the outer peripheral wall of the pin.

[0010] Furthermore, the outer peripheral wall of the pin is provided with limiting grooves on both sides of the positioning hole, and the two sides of the U-shaped sleeve are fixedly connected with limiting blocks that are inserted and cooperate with the limiting grooves.

[0011] Furthermore, the cross-section of the limiting block is a T-shaped structure.

[0012] Furthermore, the outer chain plate has connecting holes on its surface that are riveted to the pin shaft.

[0013] Furthermore, the outer peripheral wall of the pin is provided with at least two circumferentially symmetrically distributed grooves, the two ends of the grooves extend to the two ends of the pin, and the inner peripheral wall of the connecting hole is fixedly connected with a limiting protrusion adapted to the groove.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. In this utility model, a U-shaped sleeve located between two inner chain plates is fastened to the pin shaft. Several wear-resistant teeth are fixedly arranged on the outer periphery of the U-shaped sleeve. The U-shaped sleeve and the pin shaft are detachably connected. When the wear-resistant teeth are worn, the U-shaped sleeve can be removed to replace other wear-resistant teeth. Compared with the prior art, it has the function of replacing wear-resistant teeth and extends the service life of the chain.

[0016] 2. In this utility model, a groove is made on the outer peripheral wall of the pin, and a connecting hole is made on the surface of the outer chain plate. A limiting protrusion that cooperates with the groove is fixedly set in the connecting hole. Therefore, a single pin can be connected to multiple outer chain plates and inner chain plates. The setting of the limiting protrusion and the groove facilitates the precise positioning of the pin and the outer chain plate. Compared with the prior art, this setting greatly reduces the difficulty of chain manufacturing. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the structure of a rollerless plate chain according to the present invention, showing the fit between the pin, outer chain plate, inner chain plate and U-shaped ferrule;

[0018] Figure 2 for Figure 1 A diagram showing the unfolding after the explosion;

[0019] Figure 3 for Figure 2 The diagram at the bottom.

[0020] In the diagram: 1. Pin; 11. Positioning hole; 12. Groove; 13. Limiting groove; 2. Outer chain plate; 21. Connecting hole; 211. Limiting protrusion; 3. Inner chain plate; 4. U-shaped sleeve; 41. Positioning shaft; 42. Limiting block; 5. Wear-resistant teeth. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please see Figures 1 to 3 This utility model provides a technical solution: a rollerless plate chain, including a pin 1, two outer chain plates 2 sleeved on the pin 1, and two inner chain plates 3 located between the two outer chain plates 2. The pin 1 and the outer chain plates 2 are fixedly connected, wherein the inner chain plates 3 and the pin 1 are in transition fit, that is, the inner chain plates 3 can rotate relative to the pin 1. It should be noted that this embodiment is described using two rows of chains as an example, that is, two inner chain plates 3 are provided between each pair of adjacent outer chain plates 2 along the axial direction of the pin 1.

[0023] In this technical solution, a U-shaped sleeve 4 is fastened to the outside of the pin 1 between two inner chain plates 3. Wear-resistant teeth 5 are fixedly connected to the outer wall of the U-shaped sleeve 4. The U-shaped sleeve 4 replaces the pin 1 to mesh with the outer teeth. The wear-resistant teeth 5 are in contact with the working surface of the outer teeth. When in use, the open end of the U-shaped sleeve 4 is set away from the chain groove on the sprocket, so that the wear-resistant teeth 5 can be pressed against when the sprocket rotates forward and backward.

[0024] The U-shaped sleeve 4 and the pin 1 are detachably connected. When the wear-resistant tooth 5 is damaged, the corresponding U-shaped sleeve 4 can be replaced to extend the service life of the entire chain.

[0025] Specifically, a positioning shaft 41 is fixedly connected to the bottom of the U-shaped sleeve 4. The outer peripheral wall of the pin 1 is provided with a positioning hole 11 that is interference-fitted with the positioning shaft 41. During assembly, the opening of the U-shaped sleeve 4 is fastened to the outside of the positioning shaft 41 from one side. When the positioning shaft 41 and the positioning hole 11 are aligned, a clamping device is used to squeeze the blind end of the U-shaped sleeve 4. When the positioning shaft 41 enters the positioning hole 11, the U-shaped sleeve 4 and the pin 1 are tightly fixedly connected. The inner chain plate 3 has a connecting hole that is transitionally fitted with the pin 1.

[0026] Furthermore, the outer peripheral wall of the pin 1 is provided with limiting grooves 13 located on both sides of the positioning hole 11. The two sides of the U-shaped sleeve 4 are fixedly connected with limiting blocks 42 that are inserted into the limiting grooves 13. The U-shaped sleeve 4 is connected to the pin 1, and the limiting blocks 42 will be inserted into the limiting grooves 13. At this time, the two sides of the U-shaped sleeve 4 will be in a tight fit with the pin 1, which can effectively prevent the U-shaped sleeve 4 from opening.

[0027] In specific implementation, it is preferred that the cross-section of the limiting block 42 is a T-shaped structure.

[0028] In this embodiment, the outer chain plate 2 has a connecting hole 21 on its surface that is riveted to the pin 1.

[0029] Furthermore, the outer peripheral wall of the pin 1 is provided with at least two circumferentially symmetrically distributed grooves 12, the two ends of the grooves 12 extending to the two ends of the pin 1. The inner peripheral wall of the connecting hole 21 is fixedly connected with a limiting protrusion 211 that matches the groove 12. The pin 1 can only be passed through the connecting hole 21 when the limiting protrusion 211 and the groove 12 are aligned. This arrangement can quickly fix the pin 1 on the outer chain plate 2 circumferentially.

[0030] In this embodiment, the cross-section of the U-shaped sleeve 4 is C-shaped, and the wear-resistant teeth 5 are fixedly installed on the outer peripheral wall of the U-shaped sleeve 4. The arc surface structure of the U-shaped sleeve 4 allows the wear-resistant teeth 5 on it to be evenly stressed.

[0031] Working principle: During manufacturing, firstly, the inner chain plate 3, outer chain plate 2, and pin 1 are inserted. Then, the U-shaped sleeve 4 is snapped in from one side of the pin 1. When the positioning shaft 41 and the positioning hole 11 are aligned, a clamping device is used to squeeze the blind end of the U-shaped sleeve 4. At this time, when the positioning shaft 41 enters the positioning hole 11, the limiting block 42 simultaneously enters the limiting groove 13. When the inner arc wall of the U-shaped sleeve 4 and the pin 1 are in contact, the fastening connection between the two is completed. When the wear-resistant tooth 5 on one of the U-shaped sleeves 4 is damaged, a punch is inserted from the other end of the positioning hole 11. Then, a stamping device or a hammering tool is used to squeeze the punch, pushing the positioning shaft 41 on the U-shaped sleeve 4 away from the positioning hole 11. At this time, the corresponding U-shaped sleeve 4 is disassembled.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rollerless plate chain, comprising a pin (1) and two outer chain plates (2) sleeved on the pin (1) and two inner chain plates (3) located between the two outer chain plates (2), wherein the pin (1) and the outer chain plates (2) are fixedly connected, characterized in that, The pin (1) is fitted with a U-shaped sleeve (4) located between two inner chain plates (3). The outer side wall of the U-shaped sleeve (4) is fixedly connected with wear-resistant teeth (5) arranged in a row. The U-shaped sleeve (4) and the pin (1) are detachably connected.

2. The rollerless plate chain according to claim 1, characterized in that: The U-shaped sleeve (4) has a C-shaped cross-section, and the wear-resistant teeth (5) are fixedly installed on the outer peripheral wall of the U-shaped sleeve (4).

3. The rollerless plate chain according to claim 1, characterized in that: The bottom of the U-shaped sleeve (4) is fixedly connected to a positioning shaft (41), and the outer peripheral wall of the pin (1) is provided with a positioning hole (11) that is interference fit with the positioning shaft (41).

4. A rollerless plate chain according to claim 3, characterized in that: The outer peripheral wall of the pin (1) is provided with limiting grooves (13) located on both sides of the positioning hole (11), and the two sides of the U-shaped sleeve (4) are fixedly connected with limiting blocks (42) that are inserted into the limiting grooves (13).

5. A rollerless plate chain according to claim 4, characterized in that: The cross-section of the limiting block (42) is a T-shaped structure.

6. A rollerless plate chain according to claim 1, characterized in that: The outer chain plate (2) has a connecting hole (21) on its surface that is riveted to the pin (1).

7. A rollerless plate chain according to claim 6, characterized in that: The outer peripheral wall of the pin (1) is provided with at least two circumferentially symmetrically distributed grooves (12), the two ends of the grooves (12) extend to the two ends of the pin (1), and the inner peripheral wall of the connecting hole (21) is fixedly connected with a limiting protrusion (211) that is adapted to the grooves (12).

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