A chain type cutter bar

Abstract

This utility model discloses a chain-type cutter bar, comprising: a supporting square tube; characterized in that: a first sprocket is provided at the top right end of the supporting square tube; a drive motor is fixedly installed on the front side wall of the supporting square tube near the right end; a second sprocket is connected to the top of the drive motor via a chain and connected to the first sprocket; an electric push rod is hinged to the lower left end of the supporting square tube; a cutter bar is hinged to the lower right end of the electric push rod; a third sprocket and a fourth sprocket are respectively provided at both ends of the cutter bar; and a cutter chain is connected between the third sprocket and the fourth sprocket. The chain-type cutter bar structure of this utility model is reasonably designed. Due to the use of a chain-type cutter chain structure, less power is required during cutting. The cutter bar is freely extended and retracted by the electric push rod, thereby enabling the construction of enlarged heads for large-size pile foundation holes. Installation and disassembly are convenient.

Description

Technical Field

[0001] This utility model relates to a chain-type tool holder. Background Technology

[0002] When a pile foundation reamer is working, the bottom reamer bar needs to extend and retract to accurately excavate the cone to achieve the required construction conditions. However, the reamer bar used in existing pile foundation reamers cannot be used to enlarge pile foundation holes with excessively large dimensions. Therefore, there is an urgent need for a chain-type reamer bar that can be used to enlarge large pile foundation holes. Utility Model Content

[0003] This invention overcomes the shortcomings of the existing technology and provides a chain-type tool holder.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a chain-type tool holder, comprising: Supporting square tubes; The feature is that: a rotary connecting frame is fixedly installed on the top surface of the supporting square tube near the middle; a first sprocket is provided at the top right end of the supporting square tube; a drive motor is fixedly installed on the front side wall of the supporting square tube near the right end; a second sprocket is connected to the top of the drive motor and connected to the first sprocket via a chain; an electric push rod is hinged to the lower left end of the supporting square tube; a blade bar is hinged to the lower right end of the electric push rod; a third sprocket and a fourth sprocket are respectively provided at both ends of the blade bar; the fourth sprocket rotates coaxially with the first sprocket via a rotating shaft; and a blade chain is connected between the third sprocket and the fourth sprocket.

[0005] In the above structure, the right end of the electric push rod is hinged to the middle part of the tool bar.

[0006] In the above structure, the blade chain is provided with a number of equally spaced blades.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows: The chain-type cutter bar structure of this utility model is reasonably designed. Due to the use of the chain-type cutter chain structure, the power required during the cutting process is small. The cutter bar is freely extended and retracted by the electric push rod, thereby realizing the construction of large-size pile foundation hole enlargement head. It is convenient to install and disassemble. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of a chain-type tool holder according to an embodiment of the present utility model; Figure 2 This is a reference diagram showing the usage state of a chain-type tool holder as described in an embodiment of this utility model.

[0009] In the picture: 1. Supporting square tube; 2. Rotary connecting frame; 3. First sprocket; 4. Drive motor; 5. Chain; 6. Second sprocket; 7. Electric push rod; 8. Cutting bar; 9. Third sprocket; 10. Fourth sprocket; 11. Shaft; 12. Cutting chain; 13. Blade; 14. Pile foundation hole reamer; 15. Rotary bearing. Detailed Implementation

[0010] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0011] like Figure 1-2 As shown, a chain-type tool holder includes: Supporting square tube 1; The feature is that: a rotary connecting frame 2 is fixedly installed on the top surface of the supporting square tube 1 near the middle part; a first sprocket 3 is provided at the top right end of the supporting square tube 1; a drive motor 4 is fixedly installed on the front side wall of the supporting square tube 1 near the right end; a second sprocket 6 connected to the top of the drive motor 4 and connected to the first sprocket 3 via a chain 5; an electric push rod 7 is hinged to the lower left end of the supporting square tube 1; a blade bar 8 is hinged to the lower right end of the electric push rod 7; a third sprocket 9 and a fourth sprocket 10 are respectively provided at both ends of the blade bar 8; the fourth sprocket 10 rotates coaxially with the first sprocket 3 via a rotating shaft 11; and a blade chain 12 is connected between the third sprocket 9 and the fourth sprocket 10.

[0012] In the above structure, the right end of the electric push rod 7 is hinged to the middle part of the tool bar 8.

[0013] In the above structure, a plurality of equally spaced blades 13 are provided on the blade chain 12.

[0014] In practical use, the chain-type cutter bar of this utility model is connected to the slewing support 15 of the pile foundation hole reamer 14 via the slewing connecting frame 2. The slewing support 15 will drive the supporting square tube 1 to rotate. The electric push rod 7 pushes the cutter bar 8 to rotate around the rotating shaft 11. The drive motor 4 drives the cutter chain 12 to run. The blades 13 on the cutter chain 12 achieve precise dimensional cutting.

[0015] The chain-type cutter bar structure of this utility model is reasonably designed. Due to the use of the chain-type cutter chain structure, the power required during the cutting process is small. The cutter bar is freely extended and retracted by an electric push rod, thereby realizing the construction of large-size pile foundation hole enlargement heads. It is easy to install and disassemble.

[0016] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A chain-type tool holder, comprising: Supporting square tube (1); The feature is that: a rotary connecting frame (2) is fixedly installed on the top surface of the supporting square tube (1) near the middle part; a first sprocket (3) is provided on the top right end of the supporting square tube (1); a drive motor (4) is fixedly installed on the front side wall of the supporting square tube (1) near the right end; a second sprocket (6) is connected to the top of the drive motor (4) via a chain (5) and connected to the first sprocket (3); an electric push rod (7) is hinged below the left end of the supporting square tube (1); a knife bar (8) is hinged below the right end of the electric push rod (7); a third sprocket (9) and a fourth sprocket (10) are respectively provided at both ends of the knife bar (8); the fourth sprocket (10) rotates coaxially with the first sprocket (3) via a rotating shaft (11); and a knife chain (12) is connected between the third sprocket (9) and the fourth sprocket (10).

2. The chain knife bar of claim 1, wherein: The right end of the electric push rod (7) is hinged to the middle part of the knife bar (8).

3. The chain knife bar of claim 1, wherein: The blade chain (12) is provided with several equally spaced blades (13).

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