Main clutch tensioning wheel assembly structure and tensioning wheel assembly

Abstract

The utility model relates to the technical field of agricultural machinery equipment, and particularly discloses a main clutch tensioning wheel assembly structure which is used for being connected with a power output shaft of a tensioning wheel engine, a tensioning wheel comprises a tensioning wheel shaft, the main clutch tensioning wheel assembly structure comprises a tensioning support, the tensioning support is integrally formed and comprises a cross beam and two shaft sleeves, and the cross beam is connected with the two shaft sleeves. The two shaft sleeves are oppositely arranged at the two ends of the cross beam and used for being fixedly connected with a tensioning wheel shaft of the tensioning wheel and a power output shaft of an engine respectively. Two first pin holes communicated with the interior of the shaft sleeve are oppositely formed in the shaft sleeve connected with the tensioning wheel shaft, second pin holes are formed in the positions, corresponding to the first pin holes, of the tensioning wheel shaft, and elastic pins are arranged on the first pin holes and the two second pin holes. According to the main clutch tensioning wheel assembly structure, the tensioning support is integrally formed, the structural strength of the tensioning support is enhanced, and flatness and perpendicularity can be guaranteed. The utility model further discloses a tensioning wheel assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery and equipment, in particular to a main clutch tension wheel assembly structure and a tension wheel assembly. Background Art

[0002] Wheat harvesters rely on gasoline engines as power, and drive the saw blades to rotate at high speed through the transmission shaft, thereby achieving the harvesting effect. At present, most wheat harvesters use mechanical main clutch tensioning wheels, which are usually fixed and rotated by tensioning brackets.

[0003] Since the existing tensioning bracket is an assembly part, it is easy to deform during the later use process, and its own flatness and verticality cannot be guaranteed, which causes the tensioning position deviation of the tensioning wheel. When the tensioning wheel is deviated, the belt in contact with it will be out of the groove, causing the belt to wear or even be scrapped. Therefore, a main clutch tensioning wheel assembly structure and a tensioning wheel assembly are urgently needed to solve the above problems. Utility Model Content

[0004] In order to solve the technical problem that the existing tensioning bracket is an assembly part and is easy to deform during later use, which will cause the tensioning position deviation of the tensioning wheel and cause the belt to be worn or even scrapped, the utility model provides a main clutch tensioning wheel assembly structure and a tensioning wheel assembly. The tensioning bracket is formed in one piece, and the structural strength of the tensioning bracket is enhanced. No deformation will be found, and its own flatness and verticality can be guaranteed, thereby avoiding position deviation of the tensioning wheel and belt out of the groove; and the assembly with the tensioning wheel shaft and the power output shaft is simple, and the assembly efficiency is improved.

[0005] The utility model provides a main clutch tensioning wheel assembly structure, which is used for connecting the power output shaft of the tensioning wheel engine, the tensioning wheel includes a tensioning wheel shaft, the main clutch tensioning wheel assembly structure includes a tensioning bracket, the tensioning bracket is formed in one piece, the tensioning bracket includes a crossbeam and two shaft sleeves, the two shaft sleeves are relatively arranged at the two ends of the crossbeam, the two shaft sleeves are respectively used for fixed connection with the tensioning wheel shaft of the tensioning wheel and the power output shaft of the engine; two first pin holes which are connected with the inside of the shaft sleeve are relatively arranged on the shaft sleeve connected with the tensioning wheel shaft, a second pin hole is arranged at a position of the tensioning wheel shaft corresponding to the first pin hole, and elastic pins are arranged on the first pin hole and the two second pin holes.

[0006] Furthermore, a sunken groove is provided on one side of the crossbeam, a fixing plate is provided in the sunken groove, a blind hole is provided on the fixing plate, and an induction magnet is provided in the blind hole. The external induction device determines the position of the tensioning bracket by detecting the position of the induction magnet.

[0007] Furthermore, a third pin hole is provided on the shaft sleeve connected to the power output shaft of the engine.

[0008] Furthermore, the tensioning bracket is a steel casting.

[0009] Compared with the prior art, the utility model has the following technical effects:

[0010] The tension bracket is formed in one piece, and the structural strength of the tension bracket is enhanced. It will not be deformed, and its own flatness and verticality can be guaranteed, thereby effectively avoiding the position deviation of the tension wheel shaft. Since the tension wheel shaft is a component on the tension wheel, the position deviation of the tension wheel is avoided, and the belt in contact with it is prevented from being out of the groove when the tension wheel is deviated, thereby avoiding the accident of belt wear or even scrapping, and the failure rate of the tension wheel and belt is reduced. In addition, the assembly of the tension bracket, the tension wheel shaft and the power output shaft is simple, the assembly efficiency is improved, and the assembly and service costs are effectively saved.

[0011] The utility model provides a tensioning wheel assembly, comprising a tensioning wheel and an assembly structure as described in any one of the above items, wherein the tensioning wheel and a tensioning bracket of the assembly structure are rotatably connected.

[0012] Further, the tensioning wheel comprises a wheel body and a tensioning wheel shaft which are rotatably connected, a mounting opening is provided at the center of the wheel body, a deep groove ball bearing is provided in the mounting opening, a spacer is provided in the deep groove ball bearing, the spacer is fixedly connected to the tensioning wheel shaft, both ends of the tensioning wheel shaft pass through the spacer to the outside of the wheel body, and the second pin hole is provided on one end of the tensioning wheel shaft which is fixedly connected to the sleeve. The wheel body is rotatably connected to the tensioning wheel shaft through the deep groove ball bearing.

[0013] Furthermore, two deep groove ball bearings are provided, the two deep groove ball shafts are arranged oppositely in the mounting opening, and the two deep groove ball shafts are fixedly connected to the two ends of the spacer sleeve respectively. The two deep groove ball bearings are provided to make the wheel body more stable when rotating.

[0014] Furthermore, the tension wheel assembly also includes a support bracket, one end of which is fixed to one end of the tension wheel shaft located outside the wheel body, and the other end is fixed with a pressure rod parallel to the outer surface of the wheel body, a gap is provided between the pressure rod and the outer surface of the wheel body for the belt to pass through, the pressure rod outer shell is provided with a pressure rod sleeve that rotates relative to the pressure rod, one end of the pressure rod is fixed to the support bracket, and the other end is suspended, and a block is fixed to the suspended end of the pressure rod to prevent the pressure rod sleeve from falling. Under the relative action of the tension wheel and the pressure rod sleeve on the pressure rod, the belt always remains in a tensioned state.

[0015] Compared with the prior art, the utility model has the following technical effects:

[0016] The tensioning bracket is formed in one piece, and the structural strength of the tensioning bracket is enhanced, and deformation will not be found, which can ensure its own flatness and verticality, thereby avoiding the position deviation of the tensioning wheel, and further avoiding the belt contacting with it from being out of the groove when the tensioning wheel is deflected, thereby causing the belt to be worn or even scrapped, and the failure rate of the tensioning wheel and the belt is reduced. The structural strength of the tensioning wheel assembly is enhanced, and the assembly is simple. When in use, the position deviation of the tensioning wheel and the belt from being out of the groove can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a main clutch tensioning wheel assembly structure of the utility model;

[0018] Figure 2 It is a cross-sectional structural schematic diagram of the tensioning bracket of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the tensioning bracket of the utility model when it is fixedly connected to the tensioning wheel shaft;

[0020] Figure 4 It is a structural schematic diagram of a tensioning wheel assembly of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the tensioning wheel of the utility model;

[0022] Figure 6 It is a cross-sectional structural schematic diagram of the tensioning wheel of the utility model;

[0023] The reference numerals in the accompanying drawings are:

[0024] 1. tensioning bracket; 11. crossbeam; 111. sunken groove; 12. bushing; 121. first pin hole; 122. third pin hole; 13. fixing plate; 131. blind hole;

[0025] 2. tensioning wheel; 21. tensioning wheel shaft; 211. second pin hole; 22. wheel body; 221. deep groove ball bearing; 222. spacer;

[0026] 3. Support bracket; 31. Pressure rod. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0028] like Figures 1 to 3As shown, a main clutch tensioner assembly structure is used to connect the tensioner 2 and the power output shaft of the engine, the tensioner 2 includes a tensioner shaft 21, and the main clutch tensioner assembly structure includes a tensioning bracket 1. The tensioning bracket 1 of this embodiment is a cast steel part and is formed in one piece. The structural strength of the tensioning bracket 1 is enhanced, and its own flatness and verticality can be ensured. The tensioning bracket 1 includes a crossbeam 11 and two sleeves 12, that is, the crossbeam 11 and the two sleeves 12 are cast steel parts and are formed in one piece. The two sleeves 12 are relatively arranged at both ends of the crossbeam 11, and the two sleeves 12 are respectively used to be fixedly connected to the tensioner shaft 21 of the tensioner 2 and the power output shaft of the engine. Specifically, the assembly process of the tensioning bracket 1 is as follows: two first pin holes 121 connected to the tensioning wheel shaft 21 are relatively arranged on the sleeve 12, and are connected to the inside of the sleeve 12; a second pin hole 211 is arranged at a position of the tensioning wheel shaft 21 corresponding to the first pin hole 121; elastic pins are arranged on the first pin hole 121 and the two second pin holes 211, and the elastic pins ensure that the tensioning bracket 1 and the tensioning wheel shaft 21 are fixedly connected, and the elastic pins do not have hard damage between the two.

[0029] In the main clutch tensioning wheel assembly structure of this embodiment, the tensioning bracket 1 is formed in one piece, and the structural strength of the tensioning bracket 1 is enhanced, and no deformation is found, and its own flatness and verticality can be guaranteed, thereby effectively avoiding the position deviation of the tensioning wheel shaft 21. Since the tensioning wheel shaft 21 is a component on the tensioning wheel 2, the position deviation of the tensioning wheel 2 is avoided, and further, when the tensioning wheel 2 is deviated, the belt in contact with it is prevented from being out of the groove, thereby causing the belt to be worn or even scrapped, and the failure rate of the tensioning wheel 2 and the belt is reduced. In addition, its assembly with the tensioning wheel shaft 21 and the power output shaft is simple, and the assembly efficiency is improved, which effectively saves assembly and service costs.

[0030] As an implementation method, a sunken groove 111 is provided on one side of the crossbeam 11, a fixing plate 13 is provided in the sunken groove 111, a blind hole 131 is provided on the fixing plate 13, and an induction magnet is provided in the blind hole 131. The sunken groove 111 is located on the side away from the tensioning wheel shaft 21. The sunken groove 111, the fixing plate 13, and the blind hole 131 on the crossbeam 11 of this embodiment are also formed in one piece. The external induction device determines the position of the tensioning bracket 1 by detecting the position of the induction magnet.

[0031] As an implementable embodiment, a third pin hole 122 is provided on the shaft sleeve 12 connected to the power output shaft of the engine, wherein two third pin holes 122 are provided. An elastic pin is provided on the third pin hole 122, and the shaft sleeve 12 connected to the power output shaft of the engine is sleeved on the power output shaft through the elastic pin, and the power output shaft is fixed. When the tensioning bracket 1 rotates, the shaft sleeve 12 connected to the power output shaft of the engine rotates relative to the power output shaft.

[0032] like Figures 4 to 6 As shown, a tensioning wheel assembly includes a tensioning wheel 2 and an assembly structure as described in any one of the above items, wherein the tensioning wheel 2 is rotatably connected to a tensioning bracket 1 of the assembly structure.

[0033] The tensioning bracket 1 of the present embodiment is formed in one piece, and the structural strength of the tensioning bracket 1 is enhanced without deformation, so that its own flatness and verticality can be ensured, and the position deviation of the tensioning wheel 2 can be avoided. This also avoids the situation where the belt in contact with the tensioning wheel 2 is out of the groove when the tensioning wheel 2 is deviated, thereby causing the belt to be worn or even scrapped. The failure rate of the tensioning wheel 2 and the belt is reduced.

[0034] When the tensioning wheel assembly is in use, an external cylinder is hinged on the frame of the wheat harvester, and the telescopic end of the external cylinder (not shown in the figure) must be fixedly connected to the tensioning wheel shaft 21. Specifically, the telescopic end of the external cylinder is fixed to one end of the tensioning wheel shaft 21 located outside the wheel body 22.

[0035] The external oil cylinder is started, and the telescopic end of the external oil cylinder extends, thereby driving the tensioning wheel 2 to move downward, so that the tensioning wheel 2 presses the belt, and the belt always remains in a tensioned state to avoid the belt becoming weak after long-term use and affecting the operation.

[0036] The tension wheel assembly of this embodiment has enhanced structural strength and is easy to assemble. When in use, position deviation of the tension wheel 2 and belt deviation from the groove can be avoided.

[0037] As an implementable embodiment, the tensioning wheel 2 includes a wheel body 22 and a tensioning wheel shaft 21 that are rotatably connected, a mounting opening is provided at the center of the wheel body 22, a deep groove ball bearing 221 is provided in the mounting opening, a spacer sleeve 222 is provided in the deep groove ball bearing 221, the spacer sleeve 222 is fixedly connected to the tensioning wheel shaft 21, both ends of the tensioning wheel shaft 21 pass through the spacer sleeve 222 to the outside of the wheel body 22, and the second pin hole 211 is provided on one end of the tensioning wheel shaft 21 that is fixedly connected to the sleeve 12. The wheel body 22 is rotatably connected to the tensioning wheel shaft 21 through the deep groove ball bearing 221.

[0038] Further, two deep groove ball bearings 221 are provided, and the two deep groove ball shafts are arranged oppositely in the mounting opening, and the two deep groove ball shafts are respectively fixedly connected to the two ends of the spacer 222. The two deep groove ball bearings 221 are provided to make the wheel body 22 more stable when rotating.

[0039] As an implementation method, the tensioning wheel assembly also includes a support bracket 3, one end of the support bracket 3 is fixed to one end of the tensioning wheel shaft 21 located outside the wheel body 22, and the other end is fixed with a pressure rod 31 parallel to the outer surface of the wheel body 22, and there is a gap between the pressure rod 31 and the outer surface of the wheel body 22 for the belt to pass through, and the pressure rod 31 is provided with a pressure rod sleeve (not shown in the figure) that rotates relative to the pressure rod 31. One end of the pressure rod 31 is fixed to the support bracket 3, and the other end is suspended. Figure 4 The suspended end of the pressure rod 31 is fixed with a block to prevent the pressure rod sleeve from falling, wherein the pressure rod 31 is locked to the support bracket 3 by a nut, and a washer is arranged between the nut and the support bracket 3, and the washer ensures that the nut will not slip. The tension wheel 2 is on the top, and the pressure rod 31 is on the bottom. The belt passes between the pressure rod sleeve on the pressure rod 31 and the tension wheel 2. The external oil cylinder is started, and the telescopic end of the external oil cylinder is extended, thereby driving the tension wheel 2 and the pressure rod 31 to move downward, so that the tension wheel 2 presses the belt, and the pressure rod sleeve on the pressure rod 31 also presses the belt. Under the relative action of the tension wheel 2 and the pressure rod sleeve, the belt always remains in a tensioned state.

[0040] In the use process of the tension wheel assembly of this embodiment, the external oil cylinder is hinged on the frame of the wheat harvester, and the telescopic end of the external oil cylinder is fixed to the end of the tension wheel shaft 21 outside the wheel body 22. The tension wheel 2 is on the top, the pressure rod 31 is on the bottom, and the belt passes between the pressure rod sleeve on the pressure rod 31 and the tension wheel 2. The external oil cylinder is started, and the telescopic end of the external oil cylinder is extended, thereby driving the tension wheel 2 and the pressure rod 31 to move downward (the downward movement of the tension wheel 2 and the pressure rod 31 is not a vertical movement, but a downward rotation centered on the power output shaft of the engine), so that the tension wheel 2 presses the belt, and the pressure rod sleeve on the pressure rod 31 also presses the belt. Under the relative action of the tension wheel 2 and the pressure rod sleeve, the belt always remains in a tensioned state.

[0041] The embodiments described above are only preferred embodiments of the present invention and are only used to explain the present invention, not to limit the scope of implementation of the present invention. For those skilled in the art, other implementation methods can certainly be easily made by replacement or modification based on the technical contents disclosed in this specification. Therefore, all changes and improvements made to the principles and process conditions of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A main clutch tension wheel assembly structure, used for connecting a tension wheel (2) and a power output shaft of an engine, wherein the tension wheel (2) comprises a tension wheel shaft (21), and the main clutch tension wheel assembly structure comprises a tension bracket (1), characterized in that: The tensioning bracket (1) is formed in one piece, and comprises a crossbeam (11) and two shaft sleeves (12). The two shaft sleeves (12) are arranged at opposite ends of the crossbeam (11), and the two shaft sleeves (12) are respectively used to be fixedly connected to the tensioning wheel shaft (21) of the tensioning wheel (2) and the power output shaft of the engine; the shaft sleeve (12) connected to the tensioning wheel shaft (21) is provided with two first pin holes (121) connected to the inside of the shaft sleeve (12); a second pin hole (211) is provided at a position of the tensioning wheel shaft (21) corresponding to the first pin hole (121); and elastic pins are provided on the first pin hole (121) and the two second pin holes (211).

2. The main clutch tensioner assembly structure according to claim 1, characterized in that: A sunken groove (111) is provided on one side of the crossbeam (11), a fixing plate (13) is provided in the sunken groove (111), a blind hole (131) is provided on the fixing plate (13), and an induction magnet is provided in the blind hole (131).

3. The main clutch tensioner assembly structure according to claim 1, characterized in that: A third pin hole (122) is provided on a shaft sleeve (12) connected to a power output shaft of the engine.

4. The main clutch tensioner assembly structure according to claim 1, characterized in that: The tensioning bracket (1) is a steel casting.

5. A tensioning wheel assembly, comprising a tensioning wheel (2), characterized in that: It also comprises the assembly structure according to any one of claims 1 to 4, wherein the tensioning wheel (2) is rotatably connected to the tensioning bracket (1) of the assembly structure.

6. The tensioning wheel assembly according to claim 5, characterized in that: The tensioning wheel (2) comprises a wheel body (22) and a tensioning wheel shaft (21) which are rotatably connected. A mounting opening is provided at the center of the wheel body (22). A deep groove ball bearing (221) is provided in the mounting opening. A spacer sleeve (222) is provided in the deep groove ball bearing (221). The spacer sleeve (222) is fixedly connected to the tensioning wheel shaft (21). Both ends of the tensioning wheel shaft (21) pass through the spacer sleeve (222) to the outside of the wheel body (22). The second pin hole (211) is provided on one end of the tensioning wheel shaft (21) which is fixedly connected to the shaft sleeve (12).

7. The tensioning wheel assembly according to claim 6, characterized in that: Two deep groove ball bearings (221) are provided, and the two deep groove ball shafts are arranged opposite to each other in the installation opening, and the two deep groove ball shafts are respectively fixedly connected to the two ends of the spacer sleeve (222).

8. The tensioning wheel assembly according to claim 5, characterized in that: The tensioning wheel assembly also includes a support bracket (3), one end of the support bracket (3) is fixed to one end of the tensioning wheel shaft (21) located outside the wheel body (22), and the other end is fixed with a pressure rod (31) parallel to the outer surface of the wheel body (22), a gap for the belt to pass through exists between the pressure rod (31) and the outer surface of the wheel body (22), the pressure rod (31) is provided with a pressure rod sleeve that rotates relative to the pressure rod (31), one end of the pressure rod (31) is fixed to the support bracket (3), and the other end is suspended, and a block is fixed to the suspended end of the pressure rod (31) to prevent the pressure rod sleeve from falling.

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