Chain for chain arm saw

Abstract

The utility model relates to the technical field of chain arm saws, in particular to a chain for a chain arm saw, which comprises a first outer backing plate, a second outer backing plate, a connecting plate and an inner backing plate, three groups of first connecting holes are arranged on the side surfaces of the first outer backing plate and the second outer backing plate close to the upper sides, and three groups of fourth connecting holes are arranged on the side surface of the connecting plate. First connecting rivets are inserted into the first connecting holes and the fourth connecting holes, two sets of second connecting holes are formed in the middle positions of the side faces of the first outer base plate and the second outer base plate, and fifth connecting holes are formed in the left side and the right side of the inner base plate. The outer base plates in the chain are split into the first outer base plates, the second outer base plates and the connecting plates, the outer base plates can be conveniently machined in a grouped mode, then the base plates can be conveniently machined, the machining difficulty of the outer base plates is reduced, the machining efficiency is improved, meanwhile, when the outer base plates are damaged, only one part needs to be replaced, and the resource utilization efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chain saws, and particularly relates to a chain for a chain saw. Background Art

[0002] With the continuous improvement of stone mining technology and the continuous expansion of the actual demand for stones, chain saws are widely used in stone mining due to their flat cutting surface, continuous cutting ability, and high cutting efficiency. Specifically, chain saws are widely used for horizontal or vertical cutting of marble or sandstone ore layers with a hardness less than 5.

[0003] Among them, the cutting chain of a mining chain saw disclosed in the patent publication number CN217897866U includes multiple groups of circulating links; each group of circulating links includes a chain plate component, a single - blade component, and a double - blade component; the single - blade component includes multiple single - blade units arranged in sequence along the length direction of the chain plate component; the double - blade component includes multiple double - blade units arranged in sequence along the length direction of the chain plate component, and the first double - blade unit is adjacent to the last single - blade unit in the single - blade component; the cutting surfaces of the cutting heads in each single - blade unit and each double - blade unit are inclined at the same acute angle relative to the length direction of the chain plate component, and in the arrangement order along the length direction of the chain plate component, the highest cutting points of the cutting surfaces of each cutting head decrease in sequence. In the utility model, the cutting range formed by the combination of each cutting head gradually increases in the cutting width; and decreases in sequence in the cutting height, which can improve the working efficiency and slag discharge ability of the cutting head during cutting, and can also avoid the cutting head from being subjected to concentrated loads during cutting.

[0004] During the use of this device, multiple groups of outer chain plates and inner chain plates are spliced to form a cutting chain. However, the outer chain plate in this device is an integral body, and during the production process, grooves with a thickness matching that of the inner chain plate need to be opened on the outer chain plate. This processing method is difficult, resulting in low processing efficiency. Moreover, when the outer chain plate is damaged, it needs to be replaced as a whole, leading to waste of resources.

[0005] Therefore, it is necessary to invent a chain for a chain saw to solve the above problems. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a chain for a chain saw to solve the problem that in the prior art, the outer chain plate of the device is an integral body, and during the production process, grooves with a thickness matching that of the inner chain plate need to be opened on the outer chain plate. This processing method is difficult, resulting in low processing efficiency. Moreover, when the outer chain plate is damaged, it needs to be replaced as a whole, leading to waste of resources.

[0007] To achieve the above object, the utility model provides the following technical solution: A chain for a chain arm saw, including a first outer backing plate, a second outer backing plate, a connecting plate and an inner backing plate. Three groups of first connecting holes are provided at positions near the upper side of the side surfaces of the first outer backing plate and the second outer backing plate. Three groups of fourth connecting holes are provided on the side surface of the connecting plate. A first connecting rivet is inserted into the first connecting holes and the fourth connecting holes. Two groups of second connecting holes are provided at the middle positions of the side surfaces of the first outer backing plate and the second outer backing plate. Fifth connecting holes are provided on both the left and right sides of the inner backing plate.

[0008] By adopting the above technical solution, the outer backing plate in the chain is split into a first outer backing plate, a second outer backing plate and a connecting plate, which is convenient for grouping and processing the outer backing plate, reduces the processing difficulty of the outer backing plate, and thus is convenient for processing the backing plate and improves the processing efficiency.

[0009] Optionally, a connecting shaft is inserted into the second connecting holes and the fifth connecting holes, and a limiting groove is provided on the side surface of the connecting shaft.

[0010] Optionally, a positioning groove is provided on the side wall of the second connecting hole, and a positioning plate is fixedly connected to the inner side of the positioning groove.

[0011] By adopting the above technical solution, the connecting shaft penetrates through the second connecting holes and the fifth connecting holes to connect the inner backing plate and the outer backing plate.

[0012] Optionally, a second connecting rivet is inserted into the connecting shaft, and both ends of the second connecting rivet are stuck inside the limiting groove and the positioning groove.

[0013] By adopting the above technical solution, the second connecting rivet penetrates through the connecting shaft to lock the outer backing plate and the inner backing plate.

[0014] Optionally, first limiting blocks are fixedly connected to both the left and right ends of the upper surfaces of the first outer backing plate and the second outer backing plate.

[0015] Optionally, second limiting blocks are fixedly connected to both the left and right ends of the upper surface of the connecting plate.

[0016] By adopting the above technical solution, the first limiting blocks and the second limiting blocks are used to position the external cutting blade.

[0017] Optionally, connecting through holes are provided at positions between the two groups of second connecting holes on the side surfaces of the first outer backing plate and the second outer backing plate.

[0018] Optionally, two groups of third connecting holes are provided at the middle position of the upper surface of the connecting plate.

[0019] By adopting the above technical solution, the third connecting holes are used to cooperate with screws to lock and fix the cutting blade.

[0020] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0021] By splitting the outer backing plate in the chain into a first outer backing plate, a second outer backing plate and a connecting plate, the present utility model facilitates the grouped processing of the outer backing plate, thereby facilitating the processing of the backing plate, reducing the processing difficulty of the outer backing plate, improving the processing efficiency. At the same time, when the outer backing plate is damaged, only a certain component needs to be replaced, improving the resource utilization efficiency, and solving the problem that in the production process, it is necessary to open a groove on the outer link plate with a thickness matching that of the inner link plate, which is difficult to process, resulting in low processing efficiency, and when the outer link plate is damaged, it needs to be replaced as a whole, leading to waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the chain of the present utility model;

[0023] Figure 2 is a schematic diagram of the overall structure of the outer backing plate of the present utility model;

[0024] Figure 3 is a schematic diagram of the structure of the inner backing plate of the present utility model;

[0025] Figure 4 is a schematic diagram of the internal structure of the present utility model;

[0026] Figure 5 is a schematic diagram of the structure of the connecting plate of the present utility model.

[0027] Description of the reference numerals:

[0028] 1. First outer backing plate; 11. First limiting block; 12. First connecting hole; 13. Connecting through hole; 14. Second connecting hole; 15. Positioning groove; 16. Positioning plate; 2. Second outer backing plate; 3. Connecting plate; 31. Second limiting block; 32. Third connecting hole; 33. Fourth connecting hole; 34. First connecting rivet; 4. Inner backing plate; 41. Fifth connecting hole; 42. Connecting shaft; 43. Limiting groove; 44. Second connecting rivet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further described in detail below with reference to the drawings.

[0030] The present utility model provides as Figures 1 to 4A chain for a chain saw, as shown, includes a first outer backing plate 1, a second outer backing plate 2, a connecting plate 3 and an inner backing plate 4. Three groups of first connecting holes 12 are provided at positions near the upper side of the sides of the first outer backing plate 1 and the second outer backing plate 2. Three groups of fourth connecting holes 33 are provided on the side of the connecting plate 3. A first connecting rivet 34 is inserted into the first connecting holes 12 and the fourth connecting holes 33. Two groups of second connecting holes 14 are provided at the middle positions of the sides of the first outer backing plate 1 and the second outer backing plate 2. Fifth connecting holes 41 are provided on both the left and right sides of the inner backing plate 4. A connecting shaft 42 is inserted into the second connecting holes 14 and the fifth connecting holes 41. A limiting groove 43 is provided on the side of the connecting shaft 42. A positioning groove 15 is provided on the side wall of the second connecting hole 14. A positioning plate 16 is fixedly connected to the inner side of the positioning groove 15. A second connecting rivet 44 is inserted into the connecting shaft 42. Both ends of the second connecting rivet 44 are stuck inside the limiting groove 43 and the positioning groove 15.

[0031] Among them, the structures of the first outer backing plate 1 and the second outer backing plate 2 are the same. During the production process, the first outer backing plate 1, the second outer backing plate 2 and the connecting plate 3 are processed separately, effectively reducing the processing difficulty and improving the production efficiency. After they are processed, the connecting plate 3 is placed between the first outer backing plate 1 and the second outer backing plate 2, and then the first connecting rivet 34 passes through the first connecting holes 12 and the fourth connecting holes 33 to assemble and combine the first outer backing plate 1, the second outer backing plate 2 and the connecting plate 3.

[0032] At the same time, when assembling the chain, the inner backing plate 4 is inserted between the first outer backing plate 1 and the second outer backing plate 2, and then the connecting shaft 42 passes through the second connecting holes 14 and the fifth connecting holes 41, thereby fixing the inner backing plate 4 between the first outer backing plate 1 and the second outer backing plate 2. Next, the second connecting rivet 44 is passed through the connecting shaft 42, and both ends of the second connecting rivet 44 are bent and stuck inside the limiting groove 43 and the positioning groove 15 to lock the inner backing plate 4, the first outer backing plate 1 and the second outer backing plate 2.

[0033] Refer to Figure 4 and Figure 5 , first limiting blocks 11 are fixedly connected to both the left and right ends of the upper surfaces of the first outer backing plate 1 and the second outer backing plate 2. Second limiting blocks 31 are fixedly connected to both the left and right ends of the upper surface of the connecting plate 3. Connecting through holes 13 are provided at positions between the two groups of second connecting holes 14 on the sides of the first outer backing plate 1 and the second outer backing plate 2. Two groups of third connecting holes 32 are provided at the middle position of the upper surface of the connecting plate 3.

[0034] In addition, the blade required for chain saw cutting is stuck between the two groups of first limiting blocks 11, and then screws are threadedly connected to the third connecting holes 32 to fix the blade on the upper side of the outer backing plate.

[0035] Working principle of the utility model: By splitting the outer backing plate in the chain into a first outer backing plate 1, a second outer backing plate 2 and a connecting plate 3, it is convenient to group-process the outer backing plate, and then it is convenient to process the backing plate, reduce the processing difficulty of the outer backing plate, improve the processing efficiency. At the same time, when the outer backing plate is damaged, only one of the components needs to be replaced, improving the resource utilization efficiency.

[0036] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only the preferred examples of the utility model, and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A chain for a chain arm saw, comprising a first outer pad (1), a second outer pad (2), a connecting plate (3) and an inner pad (4), characterized in that: Three groups of first connection holes (12) are provided on the side surfaces of the first outer pad (1) and the second outer pad (2) near the upper side, three groups of fourth connection holes (33) are provided on the side surfaces of the connection plate (3), first connection rivets (34) are inserted into the insides of the first connection holes (12) and the fourth connection holes (33), two groups of second connection holes (14) are provided at the middle positions of the side surfaces of the first outer pad (1) and the second outer pad (2), and fifth connection holes (41) are provided on both the left and right sides of the inner pad (4).

2. A chain for a chain arm saw according to claim 1, characterized in that: A connecting shaft (42) is inserted into the interior of the second connecting hole (14) and the fifth connecting hole (41), and a limiting groove (43) is provided on the side surface of the connecting shaft (42).

3. A chain for a chain arm saw according to claim 2, characterized in that: A positioning groove (15) is provided on the side wall of the second connection hole (14), and a positioning plate (16) is fixedly connected to one side of the inner portion of the positioning groove (15).

4. A chain for a chain arm saw according to claim 3, characterized in that: A second connecting rivet (44) is inserted into the interior of the connecting shaft (42), and two ends of the second connecting rivet (44) are clamped in the interior of the limiting groove (43) and the positioning groove (15).

5. The chain for a chain-arm saw according to claim 1, characterized in that: First limit blocks (11) are fixedly connected at both left and right ends of the upper surfaces of the first outer pad (1) and the second outer pad (2).

6. The chain for a chain-arm saw according to claim 1, characterized in that: Second limit blocks (31) are fixedly connected to both left and right ends of the upper surface of the connecting plate (3).

7. The chain for a chain-arm saw according to claim 1, characterized in that: A connecting through hole (13) is provided on the side surfaces of the first outer pad (1) and the second outer pad (2) at a position between the two groups of second connecting holes (14).

8. The chain for a chain-arm saw according to claim 1, characterized in that: Two groups of third connection holes (32) are provided in the middle of the upper surface of the connection plate (3).

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