Cutter with quick replacement structure

Abstract

The utility model relates to the technical field of sickles, and discloses a cutter with a quick replacement structure, which comprises a cutter handle, a hydraulic cylinder is fixedly connected to the bottom of the inner wall of the cutter handle, and a clamping mechanism is arranged at the top of the hydraulic cylinder. The clamping mechanism comprises a vertical block, limiting blocks, a triangular block, a rolling wheel, a first rod, a second rod and a rotating rod, the bottom of the vertical block is fixedly connected with the top of the hydraulic cylinder, the limiting blocks are fixedly connected to the inner wall of the back face of the cutter handle, the number of the limiting blocks is two, the limiting blocks are slidably connected with the left end and the right end of the vertical block, and the triangular block is arranged on the limiting blocks. Through mutual cooperation of internal components of the clamping mechanism, the mechanical arms and the non-slip mats on the two sides are driven to clamp the main cutting edge, replacement is facilitated when the main cutting edge is abraded, the cutter groove and the standby cutting edge are arranged at the cutter handle, replacement can be conducted immediately when the main cutting edge is abraded, and the situation that the harvesting progress is affected due to cutter sharpening in working time is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cutters, in particular to a cutter with a quick-change structure. Background Art

[0002] The sickle is a farm tool for harvesting crops and mowing grass in rural areas. It consists of a blade and a wooden handle. Some blades have small serrations. It is generally used to harvest wheat, rice, etc. It is still widely used in rural areas. The sickle is commonly known as a cutting knife. The blade has oblique fine serrations and a wooden handle at the end. It is used to harvest rice and wheat. In the 1950s, influenced by the large sickles in northern Jiangsu and Shandong, the blade and handle were slightly lengthened. It is one of the commonly used tools for harvesting today. The sickle is a farm tool for harvesting crops and mowing grass in rural areas. It consists of a blade and a wooden handle. Some blades have small serrations. It is generally used to harvest rice. It is still widely used in some rural areas in the south of the Yangtze River.

[0003] For example, the Chinese patent: "CN211721111U" discloses the following technical solution: an agricultural tool, comprising a blade, a knife hoop, a connecting tube and a handle, wherein the knife hoop and the handle are sleeved on the connecting tube; a knife handle structure is formed at the end of the blade, and a groove matching the knife handle structure is formed on the knife hoop; the knife handle structure extends through the groove into the knife hoop, and the outer wall of the knife handle structure is welded and fixed to the inner wall of the groove.

[0004] Farm knives will become dull after being used for too long, which will affect efficiency during use. The patent does not provide a mechanism for quickly replacing the blade. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies of the prior art, the utility model provides a tool with a quick-change structure.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tool with a quick-change structure, comprising a tool handle, a hydraulic cylinder is fixedly connected to the bottom of the inner wall of the tool handle, a clamping mechanism is arranged on the top of the hydraulic cylinder, the clamping mechanism comprises a vertical block, a limit block, a triangular block, a roller, a first rod, a second rod, and a rotating rod, the bottom of the vertical block is fixedly connected to the top of the hydraulic cylinder, the limit block is fixedly connected to the back inner wall of the tool handle, there are two limit blocks, and they are slidably connected to the left and right ends of the vertical block, the triangular block is arranged on the top of the limit block, there are two triangular blocks, two of the triangular blocks are fixedly connected to the left and right ends of the vertical block, the roller is slidably connected to the inclined surface of the triangular block away from the other end of the vertical block, the roller is hinged at the bottom of the No. 1 rod, the top of the No. 1 rod is hinged to the back of the inner wall of the tool handle through the rotating rod, and the top of the No. 1 rod is fixedly connected to the bottom of the No. 2 rod.

[0009] Preferably, a mechanical arm is fixedly connected to one side of the top of the No. 2 rod close to the vertical block, and an anti-slip pad is fixedly connected to the other end of the mechanical arm away from the No. 2 rod.

[0010] Preferably, one end of the No. 2 rod close to the outer wall of the handle is fixedly connected to a spring, and the other end of the spring away from the No. 2 rod is fixedly connected to the inner wall of the handle.

[0011] Preferably, there are two anti-slip pads, and a main blade is arranged between the two anti-slip pads.

[0012] Preferably, a knife groove is formed on the left side surface of the knife handle, and a spare blade is inserted into the knife groove. The spare blade has the same shape, size and material as the main blade.

[0013] Preferably, a baffle is provided on the left side of the spare blade, and the baffle is threadedly connected to the outer wall of the handle via a screw.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a tool with a quick-change structure, which has the following beneficial effects:

[0016] 1. This tool with a quick-change structure drives the mechanical arms and anti-slip pads on both sides to clamp the main blade through the mutual cooperation of the internal components of the clamping mechanism, so that the main blade can be replaced easily when it is worn.

[0017] Second, the tool with a quick-change structure has a knife groove and a spare blade at the knife handle, so that the main blade can be replaced immediately when it is worn, avoiding sharpening during working time and affecting the harvesting progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 This is a structural diagram of a tool with a quick-change structure according to the utility model;

[0020] Figure 2 This is a cross-sectional view of a tool with a quick-change structure according to the utility model;

[0021] Figure 3 This is an enlarged view of area A of a tool with a quick-change structure of the utility model.

[0022] In the figure: 1. tool handle; 2. hydraulic cylinder; 3. clamping mechanism; 4. mechanical arm; 5. anti-slip pad; 6. spring; 7. main blade; 8. knife groove; 9. spare blade; 10. baffle; 11. screw; 301. vertical block; 302. limit block; 303. triangular block; 304. roller; 305. rod No. 1; 306. rod No. 2; 307. rotating rod. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Example 1

[0025] like Figure 1-3 As shown, the utility model provides a tool with a quick-change structure, including a tool handle 1, a hydraulic cylinder 2 is fixedly connected to the bottom of the inner wall of the tool handle 1, a clamping mechanism 3 is arranged on the top of the hydraulic cylinder 2, the clamping mechanism 3 includes a vertical block 301, a limit block 302, a triangular block 303, a roller 304, a first rod 305, a second rod 306, and a rotating rod 307, the bottom of the vertical block 301 is fixedly connected to the top of the hydraulic cylinder 2, the limit block 302 is fixedly connected to the inner wall of the back side of the tool handle 1, the number of the limit blocks 302 is two, and It is slidably connected to the left and right ends of the vertical block 301, the triangular block 303 is set on the top of the limit block 302, the number of triangular blocks 303 is two, the two triangular blocks 303 are fixedly connected to the left and right ends of the vertical block 301, the roller 304 is slidably connected to the inclined surface of the triangular block 303 away from the other end of the vertical block 301, the roller 304 is hinged at the bottom of the No. 1 rod 305, the top of the No. 1 rod 305 is hinged to the back of the inner wall of the handle 1 through the rotating rod 307, and the top of the No. 1 rod 305 is fixedly connected to the bottom of the No. 2 rod 306.

[0026] Example 2

[0027] like Figure 1-3 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, a mechanical arm 4 is fixedly connected to the top of the No. 2 rod 306 on one side close to the vertical block 301, and an anti-skid pad 5 is fixedly connected to the other end of the mechanical arm 4 away from the No. 2 rod 306, and a spring 6 is fixedly connected to one end of the No. 2 rod 306 close to the outer wall of the handle 1, and the other end of the spring 6 away from the No. 2 rod 306 is fixedly connected to the inner wall of the handle 1, and there are two anti-skid pads 5, and a main blade 7 is arranged between the two anti-skid pads 5, and a knife groove 8 is opened on the left side surface of the handle 1, and a spare blade 9 is inserted in the inside of the knife groove 8, and the spare blade 9 is exactly the same as the main blade 7 in shape, size and material, and a baffle 10 is arranged on the left side of the spare blade 9, and the baffle 10 is threadedly connected to the outer wall of the handle 1 by a screw 11.

[0028] The working principle of this tool with a quick-change structure is described in detail below.

[0029] like Figure 1-3 As shown, when the main blade 7 is worn, the hydraulic cylinder 2 is turned on to pull the vertical block 301 downward, and the downward movement of the vertical block 301 drives the triangular blocks 303 on both sides to move downward. The downward movement of the triangular blocks 303 causes the roller 304 and the bottom of the No. 1 rod 305 to lose their supporting force, and the spring 6 pulls back to drive the top of the No. 2 rod 306 to move toward the outer wall of the handle 1. The top of the No. 2 rod 306 moves toward the outer wall of the handle 1 and drives the mechanical arm 4 to move away from the main blade 7. The mechanical arm 4 moves away from the main blade 7 and drives the anti-skid pad 5 to move away from the main blade 7, thereby canceling the clamping of the main blade 7, and then the main blade 7 is taken out, and then the screw is taken out. 11. Remove the baffle 10, take out the spare blade 9 and place its bottom between the two anti-skid pads 5, turn on the hydraulic cylinder 2 to drive the vertical block 301 to move upward, the vertical block 301 moves upward to drive the triangular block 303 to move upward, the triangular block 303 moves upward to drive the roller 304 and the bottom end of the No. 1 rod 305 to make a circular motion with the rotating rod 307 as the center toward the outer wall of the handle 1, the bottom end of the No. 1 rod 305 moves in a circular motion with the rotating rod 307 as the center toward the outer wall of the handle 1, driving the top of the No. 2 rod 306 to stretch the spring 6 to drive the mechanical arm 4 to move toward the middle, and the mechanical arm 4 moves toward the middle to drive the anti-skid pad 5 to clamp the newly replaced spare blade 9.

[0030] 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 tool with a quick-change structure, comprising a tool handle (1), characterized in that: The bottom of the inner wall of the knife handle (1) is fixedly connected to a hydraulic cylinder (2), and the top of the hydraulic cylinder (2) is provided with a clamping mechanism (3); The clamping mechanism (3) comprises a vertical block (301), a limit block (302), a triangular block (303), a roller (304), a first rod (305), a second rod (306), and a rotating rod (307); The bottom of the vertical block (301) is fixedly connected to the top of the hydraulic cylinder (2); the limit block (302) is fixedly connected to the inner wall of the back side of the knife handle (1); there are two limit blocks (302) and they are slidably connected to the left and right ends of the vertical block (301); the triangular block (303) is arranged on the top of the limit block (302); there are two triangular blocks (303) and they are fixedly connected to the left and right ends of the vertical block (301); the roller (304) is slidably connected to the inclined surface of the triangular block (303) away from the other end of the vertical block (301); the roller (304) is hinged to the bottom of the No. 1 rod (305); the top of the No. 1 rod (305) is hinged to the back side of the inner wall of the knife handle (1) through a rotating rod (307); the top of the No. 1 rod (305) is fixedly connected to the bottom of the No. 2 rod (306).

2. The tool with a quick-change structure according to claim 1, characterized in that: A mechanical arm (4) is fixedly connected to one side of the top of the second rod (306) close to the vertical block (301), and an anti-slip pad (5) is fixedly connected to the other end of the mechanical arm (4) away from the second rod (306).

3. The tool with a quick-change structure according to claim 2, characterized in that: One end of the second rod (306) close to the outer wall of the knife handle (1) is fixedly connected to a spring (6), and the other end of the spring (6) away from the second rod (306) is fixedly connected to the inner wall of the knife handle (1).

4. The tool with a quick-change structure according to claim 3, characterized in that: The number of the anti-skid pads (5) is two, and a main blade (7) is provided in the middle of the two anti-skid pads (5).

5. The tool with a quick-change structure according to claim 4, characterized in that: The left side surface of the knife handle (1) is provided with a knife groove (8), and a spare knife edge (9) is inserted into the inside of the knife groove (8). The spare knife edge (9) is completely the same as the main knife edge (7) in shape, size and material.

6. The tool with a quick-change structure according to claim 5, characterized in that: A baffle plate (10) is provided on the left side of the spare blade (9), and the baffle plate (10) is threadedly connected to the outer wall of the handle (1) via a screw (11).

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