Agricultural machine tensioning wheel rocker arm

Abstract

The utility model discloses an agricultural machine tensioning wheel rocker arm which comprises a rocker arm body, a shaft sleeve installation hole is formed in the rocker arm body, a shaft sleeve is installed in the shaft sleeve installation hole, a fixing unit is installed on one side of the rocker arm body and located on the outer side of the shaft sleeve, and the fixing unit is used for detachably installing the shaft sleeve. A shaft sleeve mounting hole is formed in the rocker arm body, a fixing unit is arranged in the shaft sleeve mounting hole, the fixing unit comprises a fixing ring seat fixedly connected to the outer side of the rocker arm body, the fixing ring seat is located on the outer side of the shaft sleeve mounting hole, and a limiting structure is mounted on the fixing ring seat. When the shaft sleeve is disassembled, the clamping strip can be separated from the shaft sleeve by unscrewing the abutting bolt, so that the shaft sleeve is convenient to disassemble and replace, the service life of the shaft sleeve is prolonged, and the cost of the shaft sleeve is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rocker arms, in particular to a tension wheel rocker arm for agricultural machinery. Background Art

[0002] Agricultural machinery refers to various machines used in the process of crop planting and animal husbandry production, as well as in the primary processing and handling of agricultural and livestock products. Belts, chains, etc. are usually used for mechanical transmission. After the belt is installed or used for a long time, the belt becomes elongated and loose, and it is easy to slip. Therefore, a tensioner assembly is required to tighten the belt to enhance the mechanical transmission effect. The tensioner rocker arm is the core component of the tensioner assembly. The tensioner mainly controls the belt tension by shaking its rocker arm up and down.

[0003] In the prior art, the tensioner rocker arm of agricultural machinery includes a rocker arm body and shaft sleeves at both ends, and the rocker arm body and the shaft sleeve are designed as an integral whole. The shaft sleeve is used for installation with the tensioner shaft. The shaft sleeve is used as a wear part, resulting in that during the use of the tensioner rocker arm, the wear of the shaft sleeve is too serious compared with the rocker arm body, resulting in a short service life of the shaft sleeve. The integrated structural design makes it impossible to replace the shaft sleeve, affecting the service life of the rocker arm. Therefore, it is necessary to design an agricultural machinery tensioner rocker arm to improve the above-mentioned problems. Utility Model Content

[0004] 1. Technical problems to be solved by the utility model

[0005] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a tension wheel rocker arm for agricultural machinery, aiming to solve the problem in the prior art that the shaft sleeve cannot be replaced, which affects the service life of the rocker arm.

[0006] 2. Technical solution

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A tension wheel rocker arm of an agricultural machinery comprises a rocker arm body, a sleeve mounting hole is formed on the rocker arm body, a sleeve is mounted in the sleeve mounting hole, a fixing unit is mounted on one side of the rocker arm body and is located outside the sleeve, the fixing unit is used for detachably mounting the sleeve, the fixing unit comprises a fixing ring seat fixedly connected to the outside of the rocker arm body, the fixing ring seat is located outside the sleeve mounting hole, a limiting structure is mounted on the fixing ring seat, and the limiting structure is used for fixing the sleeve.

[0009] Preferably, receiving grooves are symmetrically provided on both sides of the inner wall at one end of the fixing ring seat, and the limiting structure includes a clamping strip movably installed inside the receiving groove, the clamping strip is an arc-shaped structure and is adapted to the shape of the sleeve, and a circle of fixing grooves is provided on the outer wall of the sleeve corresponding to the clamping strip, and the clamping strip can be inserted into the fixing groove.

[0010] Preferably, a groove is provided in an annular manner on the outer wall of one end of the fixing ring seat, a threaded hole connected to the accommodating groove is provided on the inner wall of the groove, and the limiting structure also includes a clamping bolt threadedly connected to the threaded hole, the end of the clamping bolt is placed in the groove, and the other end of the clamping bolt is clamped against the block.

[0011] Preferably, the fixing end of the clamping strip and the fixing groove have a hemispherical cross-section.

[0012] Preferably, both sides of the inner wall of the fixing groove are provided with limiting grooves, and the two ends of the clamping strip are placed in the limiting grooves.

[0013] Preferably, a limiting ring is arranged on the outer side of the fixing ring seat, and the limiting ring moves axially along the fixing ring seat.

[0014] Preferably, an inner wall of the limiting ring is provided with an internal thread, an outer wall of the fixing ring seat is provided with an external thread, and the limiting ring and the fixing ring seat are threadedly connected.

[0015] Preferably, a fixing ring is fixedly connected to the outer side of the limiting ring near one end of the rocker arm body, a reinforcing rib is fixedly connected between one side of the fixing ring and the outer wall of the limiting ring, and a plurality of reinforcing ribs are fixedly connected at equal intervals along the circumferential direction of the limiting ring.

[0016] Preferably, a retaining ring is fixedly connected to the inner wall of one end of the sleeve mounting hole, the inner diameter of the retaining ring is larger than the inner diameter of the sleeve, a plurality of clamping blocks are fixedly connected to the inner wall of the sleeve mounting hole at equal intervals along the circumferential direction, a plurality of slots for the clamping blocks to be inserted are opened on the outer wall of the sleeve along the circumferential direction, and the retaining ring and the clamping block are integrally formed with the rocker arm body.

[0017] Preferably, a weight-reducing groove is provided on one side of the rocker arm body, and a plurality of groups of reinforcing ribs staggered in transverse and longitudinal directions are fixedly connected in the weight-reducing groove.

[0018] Beneficial Effects

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] (1) The utility model provides a fixing unit. When installing the shaft sleeve, the shaft sleeve is installed into the shaft sleeve installation hole. By tightening the clamping bolt, the clamping bolt pushes the clamping strip close to the shaft sleeve, so that the fixed end of the shaft sleeve is clamped into the fixing groove, which is used to fix the position of the shaft sleeve. When removing the shaft sleeve, the clamping bolt is loosened to separate the clamping strip from the shaft sleeve, thereby releasing the fixing effect on the shaft sleeve, facilitating the removal and replacement of the shaft sleeve, increasing the service life and reducing the cost.

[0021] (2) The utility model provides a limit ring. After the locking bolt is tightened, the limit ring is rotated to adjust its position and placed at the locking bolt. The limit ring blocks the locking bolt and prevents the locking bolt from moving, thereby preventing the fixing effect of the sleeve from being affected.

[0022] (3) The utility model provides a retaining ring for radially limiting the shaft sleeve in the shaft sleeve mounting hole, and aligning the slot of the shaft sleeve with the clamping block to limit the shaft sleeve axially in the shaft sleeve mounting hole, so as to limit the installation of the shaft sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the tension wheel rocker arm of the agricultural machinery;

[0024] Figure 2 It is an enlarged schematic diagram of the three-dimensional structure of the fixed unit;

[0025] Figure 3 This is an enlarged schematic diagram of the three-dimensional structure of the sleeve mounting hole;

[0026] Figure 4 It is an enlarged schematic diagram of the three-dimensional structure of the shaft sleeve;

[0027] Figure 5 It is a schematic diagram of the cutaway structure of the sleeve mounting hole, the sleeve and the fixing unit;

[0028] Figure 6 This is a schematic diagram of the three-dimensional structure of the agricultural machinery tensioner rocker arm from another perspective.

[0029] In the figure: 1. rocker arm body; 11. reinforcing rib; 2. bushing mounting hole; 21. retaining ring; 22. clamping block; 3. bushing; 31. fixing groove; 32. clamping groove; 4. fixing unit; 41. fixing ring seat; 411. accommodating groove; 412. groove; 42. clamping strip; 43. tightening bolt; 44. limiting ring; 441. fixing ring; 442. reinforcing rib. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0031] Example:

[0032] See also Figure 1-Figure 6The present embodiment provides an agricultural machinery tension wheel rocker arm, including a rocker arm body 1, a sleeve mounting hole 2 is opened on the rocker arm body 1, a sleeve 3 is installed in the sleeve mounting hole 2, a fixing unit 4 is installed on one side of the rocker arm body 1 outside the sleeve 3, the fixing unit 4 is used for detachably installing the sleeve 3, the fixing unit 4 includes a fixing ring seat 41 fixedly connected to the outside of the rocker arm body 1, the fixing ring seat 41 is located outside the sleeve mounting hole 2, a limiting structure is installed on the fixing ring seat 41, the limiting structure is used to fix the sleeve 3, so as to facilitate the quick disassembly and replacement of the sleeve 3, thereby improving the service life and reducing the cost.

[0033] As an implementation method of this embodiment, Figure 2 , Figure 4 and Figure 5 As shown, receiving grooves 411 are symmetrically provided on both sides of the inner wall at one end of the fixing ring seat 41, and a groove 412 is provided in an annular manner on the outer wall at one end of the fixing ring seat 41. The limiting structure includes a clamping strip 42 movably installed inside the receiving groove 411. The clamping strip 42 is an arc-shaped structure and is adapted to the shape of the shaft sleeve 3. A circle of fixing grooves 31 is provided at the outer wall of the shaft sleeve 3 corresponding to the clamping strip 42. The clamping strip 42 can be inserted into the fixing groove 31. A threaded hole communicating with the receiving groove 411 is provided on the inner wall of the groove 412. The limiting structure also includes a tightening bolt threadedly connected to the threaded hole 43, the end of the tightening bolt 43 is placed in the groove 412, and the other end of the tightening bolt 43 is tightened against the clamping block 22. When installing the sleeve 3, the sleeve 3 is installed in the sleeve mounting hole 2, and by tightening the tightening bolt 43, the tightening bolt 43 pushes the clamping strip 42 close to the sleeve 3, so that the fixed end of the sleeve 3 is clamped in the fixing groove 31, which is used to fix the position of the sleeve 3. When disassembling the sleeve 3, the tightening bolt 43 is loosened to separate the clamping strip 42 from the sleeve 3, thereby releasing the fixing effect on the sleeve 3 and facilitating the disassembly and replacement of the sleeve 3.

[0034] In this embodiment, the fixed end of the clamping strip 42 and the cross-section of the fixing groove 31 are both hemispherical structures, which on the one hand facilitates the clamping strip 42 to be clamped into the fixing groove 31 for fixation, and on the other hand helps the clamping strip 42 to detach from the fixing groove 31 when the clamping strip 42 is separated from the shaft sleeve 3.

[0035] In this embodiment, if Figure 5 As shown, limiting grooves are provided on both sides of the inner wall of the fixing groove 31 , and both ends of the clamping strip 42 are placed in the limiting grooves. The limiting grooves are provided to limit the range of movement of the clamping strip 42 to prevent the clamping strip 42 from escaping from the fixing groove 31 .

[0036] In this embodiment, if Figure 2 and Figure 5As shown, a limiting ring 44 is provided on the outer side of the fixing ring seat 41, and the limiting ring 44 moves axially along the fixing ring seat 41. An internal thread is provided on the inner wall of the limiting ring 44, and an external thread is provided on the outer wall of the fixing ring seat 41. The limiting ring 44 and the fixing ring seat 41 are threadedly connected. After the tightening bolt 43 is tightened, the limiting ring 44 is rotated to adjust the position of the limiting ring 44, and the limiting ring 44 is placed at the tightening bolt 43. The tightening bolt 43 is blocked by the limiting ring 44 to prevent the tightening bolt 43 from moving and affecting the installation and fixing effect of the shaft sleeve 3.

[0037] In this embodiment, if Figure 2 As shown, a fixing ring 441 is fixedly connected to the outer side of the limiting ring 44 near one end of the rocker arm body 1, and a reinforcing rib 442 is fixedly connected between one side of the fixing ring 441 and the outer wall of the limiting ring 44. A plurality of reinforcing ribs 442 are fixedly connected at equal intervals along the circumferential direction of the limiting ring 44. The structural strength of the limiting ring 44 is improved by arranging the fixing ring 441 and the reinforcing ribs 442.

[0038] In this embodiment, if Figure 3 As shown, a retaining ring 21 is fixedly connected to the inner wall of one end of the sleeve mounting hole 2, and the retaining ring 21 is provided to radially limit the sleeve 3 in the sleeve mounting hole 2. The inner diameter of the retaining ring 21 is larger than the inner diameter of the sleeve 3, and the retaining ring 21 will not hinder the installation of the tensioning wheel shaft. A plurality of clamping blocks 22 are fixedly connected to the inner wall of the sleeve mounting hole 2 at equal intervals along the circumferential direction, and a plurality of clamping grooves 32 for the clamping blocks 22 to be clamped into are provided on the outer wall of the sleeve 3 along the circumferential direction. The retaining ring 21 and the clamping block 22 are integrally formed with the rocker arm body 1. When the sleeve 3 is installed in the sleeve mounting hole 2, the clamping groove 32 of the sleeve 3 is aligned and clamped into the clamping block 22, so as to axially limit the sleeve 3 in the sleeve mounting hole 2 and to limit the installation of the sleeve 3.

[0039] In this embodiment, if Figure 6 As shown, a weight-reducing groove is provided on one side of the rocker arm body 1 to reduce the weight of the rocker arm, and a plurality of groups of reinforcing ribs 11 staggered in transverse and longitudinal directions are fixedly connected in the weight-reducing groove to improve the structural strength of the rocker arm.

[0040] Working principle: when replacing the shaft sleeve 3, loosen the tightening bolt 43, the clamping strip 42 can be separated from the shaft sleeve 3, thereby releasing the fixing effect on the shaft sleeve 3, which is convenient for disassembly of the shaft sleeve 3, and then install the new shaft sleeve 3 into the shaft sleeve mounting hole 2, make one end of the shaft sleeve 3 rest on the retaining ring 21, and align the clamping groove 32 of the shaft sleeve 3 with the clamping block 22 for limiting the installation of the shaft sleeve 3, and then tighten the tightening bolt 43 so that the tightening bolt 43 pushes the clamping strip 42 close to the shaft sleeve 3, so that the fixed end of the shaft sleeve 3 is clamped in the fixing groove 31, which is used to fix the position of the shaft sleeve 3, and then rotate the limit ring 44, adjust the position of the limit ring 44, and place the limit ring 44 on the tightening bolt 43, and block the tightening bolt 43 through the limit ring 44 to prevent the tightening bolt 43 from moving and affecting the installation and fixing effect of the shaft sleeve 3, which is convenient for quick disassembly and assembly of the shaft sleeve 3, replacement of the shaft sleeve 3, increased service life and reduced cost.

[0041] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A tension wheel rocker arm for agricultural machinery, comprising a rocker arm body (1), wherein a shaft sleeve mounting hole (2) is formed on the rocker arm body (1), and a shaft sleeve (3) is mounted in the shaft sleeve mounting hole (2), characterized in that: A fixing unit (4) is installed on one side of the rocker arm body (1) outside the shaft sleeve (3), the fixing unit (4) being used for detachably installing the shaft sleeve (3), the fixing unit (4) comprising a fixing ring seat (41) fixedly connected to the outside of the rocker arm body (1), the fixing ring seat (41) being located outside the shaft sleeve mounting hole (2), and a limiting structure being installed on the fixing ring seat (41), the limiting structure being used for fixing the shaft sleeve (3).

2. The agricultural machinery tension wheel rocker arm according to claim 1, characterized in that: Accommodation grooves (411) are symmetrically provided on both sides of the inner wall at one end of the fixing ring seat (41). The limiting structure comprises a clamping strip (42) movably mounted inside the accommodating groove (411). The clamping strip (42) is an arc-shaped structure and matches the shape of the shaft sleeve (3). A circle of fixing grooves (31) is provided on the outer wall of the shaft sleeve (3) corresponding to the clamping strip (42). The clamping strip (42) can be clamped into the fixing groove (31).

3. The agricultural machinery tension wheel rocker arm according to claim 2, characterized in that: A groove (412) is formed in an annular shape on the outer wall of one end of the fixing ring seat (41), a threaded hole communicating with the receiving groove (411) is formed on the inner wall of the groove (412), and the limiting structure further comprises a clamping bolt (43) threadedly connected to the threaded hole, an end of the clamping bolt (43) is disposed in the groove (412), and the other end of the clamping bolt (43) is clamped against the clamping block (22).

4. The agricultural machinery tension wheel rocker arm according to claim 2, characterized in that: The cross-sections of the fixed end of the clamping strip (42) and the fixed groove (31) are both hemispherical structures.

5. The agricultural machinery tension wheel rocker arm according to claim 2, characterized in that: Limiting grooves are provided on both sides of the inner wall of the fixing groove (31), and the two ends of the clamping strip (42) are placed in the limiting grooves.

6. The agricultural machinery tension wheel rocker arm according to claim 1, characterized in that: A limiting ring (44) is arranged outside the fixed ring seat (41), and the limiting ring (44) moves axially along the fixed ring seat (41).

7. The agricultural machinery tension wheel rocker arm according to claim 6, characterized in that: An internal thread is provided on the inner wall of the limiting ring (44), an external thread is provided on the outer wall of the fixing ring seat (41), and the limiting ring (44) and the fixing ring seat (41) are threadedly connected.

8. The agricultural machinery tension wheel rocker arm according to claim 6, characterized in that: A fixing ring (441) is fixedly connected to the outer side of the limiting ring (44) close to one end of the rocker arm body (1), and a reinforcing rib (442) is fixedly connected between one side of the fixing ring (441) and the outer wall of the limiting ring (44), and a plurality of reinforcing ribs (442) are fixedly connected at equal intervals along the circumferential direction of the limiting ring (44).

9. The agricultural machinery tension wheel rocker arm according to claim 1, characterized in that: A retaining ring (21) is fixedly connected to the inner wall of one end of the shaft sleeve mounting hole (2); the inner diameter of the retaining ring (21) is larger than the inner diameter of the shaft sleeve (3); a plurality of clamping blocks (22) are fixedly connected to the inner wall of the shaft sleeve mounting hole (2) at equal intervals in a circumferential direction; a plurality of clamping grooves (32) for clamping the clamping blocks (22) are provided in the outer wall of the shaft sleeve (3) in a circumferential direction; the retaining ring (21) and the clamping blocks (22) are integrally formed with the rocker arm body (1).

10. The agricultural machinery tension wheel rocker arm according to claim 1, characterized in that: A weight-reducing groove is provided on one side of the rocker arm body (1), and a plurality of groups of reinforcing ribs (11) staggered in a transverse and longitudinal direction are fixedly connected in the weight-reducing groove.

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