Blade protector for grain harvester cutter

Abstract

The utility model discloses a grain harvester cutter's blade protector, including stationary knife, blade protector and blade protector beam, blade protector includes blade protector connecting part, blade protector connecting part right side is fixedly connected with blade protector main body, blade protector main body right side is fixedly connected with blade protector upper cover, blade protector upper cover is matched with blade protector main body, blade protector connecting part right side is fixedly connected with blade protector connecting part right side, blade protector connecting part right side is fixedly connected with blade protector connecting part right side, blade protector connecting part right side is fixedly connected with blade protector connecting part right side, blade protector connecting part right side is fixedly connected with blade protector connecting part right side, blade protector connecting part right side is matched with blade protector connecting part right side. The blade protector connecting part, the blade protector main body and the blade protector upper cover are integrated, the blade protector upper cover is provided with a groove, the stationary knife is mounted at the upper end of the blade protector main body, the left end of the stationary knife is provided with a positioning hole I and is fixedly connected with a positioning hole II in the blade protector main body through a bolt, the right end of the stationary knife is provided with a clamping bump, and the clamping bump is fixedly connected with the blade protector main body through a bolt. The clamping protruding block is clamped in the groove, and the edge protector beam is located at the left end of the fixed cutter and abuts against the fixed cutter, so that the fixed cutter is completely limited, the phenomenon that due to long-term work of the machine, the fixed cutter shakes due to looseness, and harvesting fails is avoided, and the fixed cutter is simple in design structure, light in weight and easy to disassemble and replace.

Description

Technical Field

[0001] The utility model belongs to the application field of agricultural machinery, and particularly relates to a knife guard for a cutter of a grain harvester. Background Art

[0002] As an important and indispensable device in modern agricultural mechanization, the performance and efficiency of a grain harvester are directly related to the crop yield and farmers' income. Among the numerous components of a grain harvester, the knife guard, as one of the key components, is of great significance for improving the operation efficiency of the whole machine, reducing energy consumption and extending the service life in terms of its design, manufacturing and performance optimization.

[0003] During long-term and high-intensity harvesting operations, the stationary knife needs to withstand huge impact and friction forces from the crops. If the fixing strength of the knife guard is insufficient, it is easy to cause the stationary knife to loosen or fall off, thus affecting the normal progress of the harvesting operation. This will not only reduce the harvesting efficiency, but may also damage other components of the machine. There are also certain difficulties in the maintenance of the fixed stationary knife. Since the stationary knife is usually fixed on the knife guard, when replacing the blade or performing cleaning and maintenance, it is necessary to disassemble the entire knife guard or related components, which undoubtedly increases the difficulty and cost of maintenance. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and provide a knife guard for a cutter of a grain harvester with a firmly connected stationary knife, convenient installation and disassembly, simple structure and light weight.

[0005] The technical problem to be solved by the utility model is realized by adopting the following technical solutions: A knife guard for a cutter of a grain harvester includes a stationary knife, a knife guard and a knife guard beam. The knife guard includes a knife guard connecting part. The right side of the knife guard connecting part is fixedly connected with a knife guard main body. The right side of the knife guard main body is fixedly connected with a knife guard upper cover. The knife guard upper cover and the knife guard main body cooperate with each other to form a weight-reducing semi-closed space. The knife guard connecting part, the knife guard main body and the knife guard upper cover are integrated. The knife guard upper cover is provided with a groove. The stationary knife is installed at the upper end of the knife guard main body. A positioning hole one is provided on the left side of the stationary knife and is fixedly connected with a positioning hole two on the knife guard main body by a bolt. A clamping convex block is provided at the right end of the stationary knife, and the clamping convex block is stuck in the groove. The knife guard beam is at the left end of the stationary knife and abuts against the stationary knife.

[0006] Preferably, the knife guard connecting part is provided with a connecting hole one, the knife guard beam is provided with a connecting hole two, the centers of the connecting hole one and the connecting hole two are aligned, and they are fixedly connected by a bolt.

[0007] Preferably, the upper end of the knife guard upper cover tilts upward at a certain angle.

[0008] Preferably, the weight-reducing semi-closed space includes the upper space and the lower space above the right end of the fixed knife.

[0009] Preferably, there is a certain gap between the front and rear sides of the engaging convex block and the groove.

[0010] The beneficial effects of the present utility model are as follows: 1) One end of the fixed knife is fixed through the positioning hole I on the fixed knife, and the engaging convex block on the fixed knife is stuck in the groove to fix the other end of the fixed knife. Moreover, the blade guard beam is located on the left side of the fixed knife and abuts against the fixed knife, so that the fixed knife is completely limited in position, with accurate positioning and reliable connection, and will not shake randomly. During the long-term operation of the machine, the fixed knife can be stably fixed on the blade guard without affecting the harvesting effect; 2) The fixed knife is provided with an engaging convex block that cooperates with the groove. Only one bolt on the left side of the fixed knife needs to be disassembled to complete the installation and disassembly of the fixed knife. And there is a certain gap between the front and rear sides of the engaging convex block and the groove, making it easier to align and insert the fixed knife during installation, reducing the difficulty and complexity of installation and disassembly; 3) The upper cover of the blade guard cooperates with the main body of the blade guard to form a weight-reducing semi-closed space. The existence of this part of the space reduces the overall mass of the blade guard and the power consumption of the whole machine; 4) The upper end of the upper cover of the blade guard is tilted at a certain angle, which can reduce the cutting resistance and protect the blade.

[0011] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the above-described illustrative aspects, embodiments, and features, further aspects, embodiments, and features of the present utility model will be readily apparent by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic side view structure diagram of the present utility model.

[0013] Figure 2 It is a schematic top view structure diagram of the present utility model.

[0014] Figure 3 For the present utility model Figure 1 Sectional view taken along line A-A in the present utility model.

[0015] Figure 4 For the present utility model Figure 2 Sectional view taken along line B-B in the present utility model.

[0016] Figure 5 It is a schematic top view structure diagram of the fixed knife in the present utility model.

[0017] As shown in the figure: 1. Fixed knife; 2. Blade guard; 3. Blade guard beam; 4. Weight-reducing semi-closed space; 5. Groove; 6. First positioning hole; 7. Second positioning hole; 8. Engaging convex block; 9. First connecting hole; 10. Second connecting hole; 101. Blade guard connecting part; 102. Blade guard main body; 103. Blade guard upper cover. Detailed implementation manner

[0018] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0019] In the description of the present application, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0020] Combined with the attached Figures 1-5 , a blade guard for a cutter of a grain harvester, includes a fixed knife 1, a blade guard 2 and a blade guard beam 3. The blade guard 1 includes a blade guard connecting part 101. The right side of the blade guard connecting part 101 is fixedly connected to the blade guard main body 102. The right side of the blade guard main body 102 is fixedly connected to the blade guard upper cover 103. The blade guard upper cover 103 cooperates with the blade guard main body 102 to form a weight-reducing semi-closed space 4. The blade guard connecting part 101, the blade guard main body 102 and the blade guard upper cover 103 are integrated. The blade guard upper cover 103 is provided with a groove 5. The fixed knife 1 is installed at the upper end of the blade guard main body 102. The left side of the fixed knife 1 is provided with a first positioning hole 6 and is fixedly connected to the second positioning hole 7 on the blade guard main body 102 with bolts. The right end of the fixed knife 1 is provided with an engaging convex block 8, and the engaging convex block 8 is stuck in the groove 5. The blade guard beam 3 is at the left end of the fixed knife 1 and abuts against the fixed knife 1. In this way, the fixed knife 1 will be completely limited on the blade guard 2. When the machine is working, the fixed knife 1 will not shake up and down or left and right, and the connection is reliable.

[0021] The blade guard connecting part 101 is provided with a first connecting hole 9, and the blade guard beam 3 is provided with a second connecting hole 10. The centers of the first connecting hole 9 and the second connecting hole 10 are aligned and fixedly connected with bolts, so that the blade guard 2 can be reliably connected to the blade guard beam 3.

[0022] The upper part of the upper cover 103 of the cutter guard tilts upward at a certain angle, and such a design can reduce the cutting resistance and protect the blade.

[0023] The weight-reducing semi-closed space 4 includes the upper space and the lower space above the right end of the fixed knife 1. The space in this part reduces the mass of the cutter guard 2 and the power consumption during the operation of the machine.

[0024] There is a certain gap between the front and rear sides of the engaging bump 8 and the groove 5, enabling the fixed knife 1 to easily engage the engaging bump 8 in the groove 5, which is convenient for the operator to install and disassemble.

[0025] The above describes the present utility model and its implementation manners. Such a description is not restrictive, and only one of the implementation manners of the present utility model is shown throughout the text. The actual structure is not limited thereto. In summary, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the creation of the present utility model, design similar structural manners and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present utility model.

Claims

1. A knife guard for a cutter of a grain harvester, comprising a stationary knife (1), a knife guard (2) and a knife guard beam (3), characterized in that, The cutter guard (2) includes a cutter guard connecting portion (101). The right side of the cutter guard connecting portion (101) is fixedly connected to a cutter guard main body (102). The right side of the cutter guard main body (102) is fixedly connected to a cutter guard upper cover (103). The cutter guard upper cover (103) cooperates with the cutter guard main body (102) to form a weight-reducing semi-closed space (4). The cutter guard connecting portion (101), the cutter guard main body (102), and the cutter guard upper cover (103) are integrated. The cutter guard upper cover (103) is provided with a groove (5). The fixed knife (1) is installed at the upper end of the cutter guard main body (102). A first positioning hole (6) is provided on the left side of the fixed knife (1), and is fixedly connected to a second positioning hole (7) on the cutter guard main body (102) with bolts. A clamping convex block (8) is provided at the right end of the fixed knife (1), and the clamping convex block (8) is stuck in the groove (5). The cutter guard beam (3) is at the left end of the fixed knife (1) and abuts against the fixed knife (1).

2. The knife guard for a cutter of a grain harvester according to claim 1, characterized in that, The cutter guard connecting portion (101) is provided with a first connecting hole (9). The cutter guard beam (3) is provided with a second connecting hole (10). The centers of the first connecting hole (9) and the second connecting hole (10) are aligned and fixedly connected with bolts.

3. A ledger plate for a cutter of a grain harvester according to claim 1, wherein, The upper part of the cutter guard upper cover (103) warps upward at a certain angle.

4. The ledger plate for a cutter of a grain harvester according to claim 1, wherein, The weight-reducing semi-closed space (4) includes the upper space and the lower space above the right end of the fixed knife (1).

5. A ledger plate for a cutter of a grain harvester according to claim 1, characterized in that, A certain gap is left between the front and rear sides of the clamping convex block (8) and the groove (5).

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