Telescopic tooth fixing device

Abstract

The utility model provides a telescopic tooth fixing device and belongs to the technical field of harvesters, a telescopic tooth hinge seat comprises a first half hinge and a second half hinge, one end of the first half hinge is hinged with one end of the second half hinge, the telescopic tooth hinge seat further comprises a fixing cover and a positioning pin, and the fixing cover comprises an inserting cavity. The other end of the first half hinge and the other end of the second half hinge are arranged in the insertion cavity; the positioning pin penetrates through the fixed cover, the first half hinge and the second half hinge; one end of the first half hinge and one end of the second half hinge are hinged, the other end of the first half hinge and the other end of the second half hinge are inserted into the inserting cavity, the positioning pin penetrates through the fixing cover, the first half hinge and the second half hinge to fix the fixing cover, the first half hinge and the second half hinge, the first half hinge and the second half hinge are not prone to loosening under the action of the inserting cavity, and the telescopic tooth hinge base has an obvious fastening effect on the telescopic tooth shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of harvesters, in particular to a telescopic tooth fixing device. Background Art

[0002] Telescopic teeth are an important part of the harvester. For example, the publication number: CN201957467U, name: Telescopic tooth fixing device for harvester header auger, discloses a "two clamp-shaped semi-hinge seats with the same shape and good interchangeability. The telescopic teeth are fixedly connected to the telescopic tooth hinge seat by hinged connecting bolts and slotted nuts, and the telescopic teeth will not loosen or fall off. The clamp-shaped semi-hinge seat can be flipped into a straight shape to open, and it is very convenient to replace the telescopic teeth." Telescopic tooth fixing device. However, the telescopic tooth is fixed to the telescopic tooth hinge seat by connecting bolts, which is inconvenient to disassemble during installation and maintenance. Secondly, the connecting bolts are easy to loosen during use. Once loosened, the two clamp-shaped semi-hinge seats are easy to loosen, and the telescopic tooth hinge seat has a reduced or even failed tightening effect on the telescopic tooth shaft, resulting in the entire telescopic tooth being unable to work normally.

[0003] Therefore, there is an urgent need for a retractable tooth fixing device that is easy to disassemble and reliable. Utility Model Content

[0004] In view of this, the utility model proposes a telescopic tooth fixing device which utilizes a positioning pin to fix the first half hinge and the second half hinge.

[0005] The technical solution of the utility model is implemented as follows: a telescopic tooth fixing device includes a telescopic tooth and a telescopic tooth hinge seat, the telescopic tooth hinge seat includes a first half hinge and a second half hinge, one end of the first half hinge is hinged to one end of the second half hinge, and also includes a fixing cover and a positioning pin, the fixing cover includes an insertion cavity, the other end of the first half hinge and the other end of the second half hinge are both arranged in the insertion cavity, and the positioning pin passes through the fixing cover, the first half hinge and the second half hinge.

[0006] On the basis of the above technical solution, preferably, the first half hinge includes a first clamping part and a first plug-in part, and the first clamping part and the first plug-in part are connected; the second half hinge includes a second clamping part and a second plug-in part, and the second clamping part and the second plug-in part are connected.

[0007] On the basis of the above technical solution, preferably, the telescopic tooth hinge seat further comprises a pin, and the pin passes through an end of the first clamping part away from the first plug-in part and an end of the first clamping part away from the first plug-in part.

[0008] On the basis of the above technical solution, preferably, a clamping cavity is provided between the first clamping part and the second clamping part.

[0009] On the basis of the above technical solution, preferably, a connecting cavity is provided between the first plug-in portion and the second plug-in portion.

[0010] On the basis of the above technical solution, preferably, the clamping cavity is not connected to the connecting cavity, and the axis of the clamping cavity is perpendicular to the axis of the connecting cavity.

[0011] On the basis of the above technical solution, preferably, the fixing cover further comprises a fixing installation hole, the fixing installation hole is communicated with the plug-in cavity, and the fixing installation hole is arranged opposite to the connecting cavity.

[0012] On the basis of the above technical solution, preferably, a first plug-in slot is provided in the length direction of the first plug-in part, and a second plug-in slot is provided in the length direction of the second plug-in part; a plurality of plug-in strips are provided on the inner wall of the plug-in cavity, and a plug-in strip is provided in conjunction with the first plug-in slot and the second plug-in slot.

[0013] On the basis of the above technical solution, preferably, the positioning pin includes a plug-in rod, a buckle ring and a bending ring, one end of the bending ring is connected to the plug-in rod, and the other end is connected to the buckle ring, and the bending ring is bent 180°.

[0014] On the basis of the above technical solution, preferably, the fixing cover also includes a pin positioning hole, a first pin hole is provided on the first plug-in part, and a second pin hole is provided on the second plug-in part; the plug-in rod passes through the pin positioning hole, the first pin hole and the second pin hole in sequence and then extends out of the fixing cover, and the buckle ring is buckled on the outer periphery of the fixing cover.

[0015] The telescopic tooth fixing device of the utility model has the following beneficial effects compared with the prior art:

[0016] One end of the first half hinge and the second half hinge are hinged, and the other end is inserted into the plug-in cavity. The positioning pin passes through the fixed cover, the first half hinge and the second half hinge to fix the fixed cover, the first half hinge and the second half hinge. The first half hinge and the second half hinge are not easy to loosen under the action of the plug-in cavity, and the telescopic gear hinge seat has an obvious fastening effect on the telescopic gear shaft.

[0017] The fixing of the first half hinge and the second half hinge no longer requires bolts and nuts, which makes disassembly and installation convenient, improves the efficiency of disassembly and installation, and reduces the cost and maintenance difficulty of the device;

[0018] The first half hinge consists of a first clamping part and a first plug-in part, and the second half hinge consists of a second clamping part and a second plug-in part, one part of which is used to clamp the telescopic gear shaft, and the other part is used to fix the telescopic gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a partial structural schematic diagram of a harvester of the utility model;

[0021] Figure 2 It is a three-dimensional diagram of a telescopic tooth fixing device of the utility model;

[0022] Figure 3 A three-dimensional diagram of the first half hinge and the second half hinge of the utility model;

[0023] Figure 4 It is a three-dimensional diagram of the fixed cover of the utility model. DETAILED DESCRIPTION

[0024] The following will be combined with the implementation of the utility model to clearly and completely describe the technical solutions in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figure 1-4 As shown, a telescopic tooth fixing device includes a telescopic tooth 1 and a telescopic tooth hinge seat 2, the telescopic tooth hinge seat 2 includes a first half hinge 21 and a second half hinge 22, one end of the first half hinge 21 is hinged to one end of the second half hinge 22, and also includes a fixing cover 3 and a positioning pin 4, the fixing cover 3 includes an insertion cavity 31, the other end of the first half hinge 21 and the other end of the second half hinge 22 are both arranged in the insertion cavity 31, and the positioning pin 4 passes through the fixing cover 3, the first half hinge 21 and the second half hinge 22. The first half hinge 21 and the second half hinge 22 are hinged at one end and inserted into the insertion cavity 31 at the other end. The locating pin 4 passes through the fixing cover 3, the first half hinge 21 and the second half hinge 22 to fix the fixing cover 3, the first half hinge 21 and the second half hinge 22. The first half hinge 21 and the second half hinge 22 are not easy to loosen under the action of the insertion cavity 31, and the telescopic tooth hinge seat 2 has an obvious tightening effect on the telescopic tooth shaft; the first half hinge 21 and the second half hinge 22 are no longer fixed with bolts and nuts, and disassembly and installation are convenient, which improves the efficiency of disassembly and installation and reduces the cost and maintenance difficulty of the device.

[0026] The first half hinge 21 includes a first clamping portion 211 and a first plug-in portion 212, and the first clamping portion 211 and the first plug-in portion 212 are connected; the second half hinge 22 includes a second clamping portion 221 and a second plug-in portion 222, and the second clamping portion 221 and the second plug-in portion 222 are connected. The first half hinge 21 is composed of the first clamping portion 211 and the first plug-in portion 212, and the second half hinge 22 is composed of the second clamping portion 221 and the second plug-in portion 222, one part of which is used to clamp the telescopic gear shaft, and the other part is used to fix the telescopic gear.

[0027] The telescopic tooth hinge seat 2 further includes a pin 23, which passes through one end of the first clamping portion 211 away from the first plug-in portion 212 and one end of the first clamping portion 211 away from the first plug-in portion 212. The hinge connection between the first half hinge 21 and the second half hinge 22 is achieved through the pin 23. Since the first clamping portion 211 and the second clamping portion 221 are used to clamp the telescopic tooth shaft, and the first plug-in portion 212 and the second plug-in portion 222 are used to fix the telescopic teeth, in order to leave enough space, the telescopic tooth hinge seat 2 is made as short as possible, and the pin 23 passes through one end of the first clamping portion 211 away from the first plug-in portion 212 and one end of the first clamping portion 211 away from the first plug-in portion 212.

[0028] A clamping cavity 24 is provided between the first clamping portion 211 and the second clamping portion 221. The space of the clamping cavity 24 is used to clamp the telescopic gear shaft. A connecting cavity 25 is provided between the first plug-in portion 212 and the second plug-in portion 222, and the connecting cavity 25 is used to fix the telescopic gear.

[0029] The clamping cavity 24 is not connected to the connecting cavity 25, and the axis of the clamping cavity 24 is perpendicular to the axis of the connecting cavity 25. The connection between the clamping cavity 24 and the connecting cavity 25 will cause the telescopic teeth to enter the clamping cavity 24, which reduces the fixing effect of the telescopic teeth.

[0030] The fixing cover 3 further comprises a fixing installation hole 33, which is connected to the plug-in cavity 31 and is arranged opposite to the connecting cavity 25. The telescopic finger passes through the fixing installation hole 33 and then extends into the plug-in cavity 31, and is then fixedly arranged in the connecting cavity 25.

[0031] The first plug-in portion 212 is provided with a first plug-in slot 213 in the length direction, and the second plug-in portion 222 is provided with a second plug-in slot 223 in the length direction; the inner wall of the plug-in cavity 31 is provided with a plurality of plug-in strips 32, and each of the first plug-in slot 213 and the second plug-in slot 223 is provided with a plug-in strip 32. When the first plug-in portion 212 and the second plug-in portion 222 are inserted into the fixed installation hole 33, one of the plug-in strips 32 is provided along the first plug-in portion 212, and the other plug-in strip 32 is provided along the second plug-in portion 222.

[0032] The positioning pin 4 includes a plug rod 41, a buckle ring 42 and a bending ring 43. One end of the bending ring 43 is connected to the plug rod 41, and the other end is connected to the buckle ring 42. The bending ring 43 is bent 180 degrees. At this time, the plug rod 41 can be used to fix the fixed cover 3, the first plug part 212 and the second plug part 222, and the buckle ring 42 can be used to fix it on the fixed cover 3 to prevent the pin 4 from rotating or falling off, resulting in reduced reliability.

[0033] The fixing cover 3 further includes a pin positioning hole 34, a first pin hole 214 is provided on the first plug-in portion 212, and a second pin hole 224 is provided on the second plug-in portion 222; the plug-in rod 41 sequentially passes through the pin positioning hole 34, the first pin hole 214, and the second pin hole 224 and then extends out of the fixing cover 3, and the buckle ring 42 is buckled on the outer periphery of the fixing cover 3. The first plug-in portion 212 and the second plug-in portion 222 are fixedly arranged in the plug-in cavity 31 by the plug-in rod 41 sequentially passing through the pin positioning hole 34, the first pin hole 214, and the second pin hole 224 and then extending out of the fixing cover 3, and the fixing method is simple and low in cost.

[0034] The telescopic tooth 1 includes a telescopic connecting rod 11 and an extension rod 12, which are connected by a threaded connection. Since the telescopic tooth 1 is easily worn or broken during use, it needs to be replaced. The worn or broken position is often the extension rod 12. Several telescopic teeth 1 are designed as an integral whole. When replacing the telescopic tooth 1, the telescopic tooth 1 needs to be removed from the telescopic tooth hinge seat 2, and the replacement is relatively cumbersome. The telescopic tooth 1 is designed to be composed of two parts, the telescopic connecting rod 11 and the extension rod 12. When the extension rod 12 is worn or bent, only the extension rod 12 needs to be replaced, saving maintenance costs and maintenance time.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A telescopic tooth fixing device, comprising a telescopic tooth (1) and a telescopic tooth hinge seat (2), the telescopic tooth hinge seat (2) comprising a first half hinge (21) and a second half hinge (22), one end of the first half hinge (21) being hinged to one end of the second half hinge (22), characterized in that: It also comprises a fixing cover (3) and a positioning pin (4), the fixing cover (3) comprising an inserting cavity (31), the other end of the first half hinge (21) and the other end of the second half hinge (22) are both arranged in the inserting cavity (31), and the positioning pin (4) passes through the fixing cover (3), the first half hinge (21) and the second half hinge (22).

2. A telescopic tooth fixing device according to claim 1, characterized in that: The first half hinge (21) comprises a first clamping portion (211) and a first plug-in portion (212), the first clamping portion (211) and the first plug-in portion (212) being connected; the second half hinge (22) comprises a second clamping portion (221) and a second plug-in portion (222), the second clamping portion (221) and the second plug-in portion (222) being connected.

3. A telescopic tooth fixing device according to claim 2, characterized in that: The telescopic tooth hinge seat (2) further comprises a pin (23), wherein the pin (23) passes through an end of the first clamping portion (211) away from the first plug-in portion (212) and an end of the first clamping portion (211) away from the first plug-in portion (212).

4. A telescopic tooth fixing device according to claim 2, characterized in that: A clamping cavity (24) is provided between the first clamping portion (211) and the second clamping portion (221).

5. A telescopic tooth fixing device according to claim 4, characterized in that: A connecting cavity (25) is provided between the first plug-in portion (212) and the second plug-in portion (222).

6. A telescopic tooth fixing device according to claim 5, characterized in that: The clamping cavity (24) is not connected to the connecting cavity (25), and the axis of the clamping cavity (24) is arranged perpendicular to the axis of the connecting cavity (25).

7. A telescopic tooth fixing device according to claim 5, characterized in that: The fixing cover (3) further comprises a fixing installation hole (33), the fixing installation hole (33) being in communication with the plug-in cavity (31), and the fixing installation hole (33) being arranged opposite to the connecting cavity (25).

8. A telescopic tooth fixing device according to claim 7, characterized in that: The first plug-in portion (212) is provided with a first plug-in slot (213) in the length direction, and the second plug-in portion (222) is provided with a second plug-in slot (223) in the length direction; the inner wall of the plug-in cavity (31) is provided with a plurality of plug-in strips (32), and the first plug-in slot (213) and the second plug-in slot (223) are each provided with a plug-in strip (32) in cooperation with each other.

9. A telescopic tooth fixing device according to claim 3, characterized in that: The positioning pin (4) comprises a plug-in rod (41), a buckle ring (42) and a bending ring (43); one end of the bending ring (43) is connected to the plug-in rod (41), and the other end is connected to the buckle ring (42); the bending ring (43) is bent 180 degrees.

10. A telescopic tooth fixing device according to claim 9, characterized in that: The fixing cover (3) further comprises a pin positioning hole (34), the first plug-in portion (212) is provided with a first pin hole (214), and the second plug-in portion (222) is provided with a second pin hole (224); the plug-in rod (41) passes through the pin positioning hole (34), the first pin hole (214) and the second pin hole (224) in sequence and then extends out of the fixing cover (3), and the buckle ring (42) is buckled on the outer periphery of the fixing cover (3).

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