Gear-engaging limiting meshing sleeve mechanism

Abstract

The utility model relates to the field of tractors, and discloses a gear engaging limiting meshing sleeve mechanism which comprises a shell and a meshing tooth holder arranged in the shell, a shifting fork is arranged above the meshing tooth holder, a limiting meshing sleeve is arranged on the outer side of the shifting fork, and the limiting meshing sleeve is located above the meshing tooth holder. Two gears are arranged on the outer side of the meshing tooth holder, a check ring is arranged on the outer side of the limiting meshing sleeve, the limiting meshing sleeve is limited when being meshed with the gear in a gear engaging mode, the check ring on the outer side of the limiting meshing sleeve prevents the shifting fork from being abraded in the using process, the number of the gears is two, and the middle ends of the gears are located on a shaft at the lower end of the interior of the shell. According to the gear-engaging limiting meshing sleeve mechanism, the check ring is additionally arranged on the meshing sleeve, limiting is achieved when the gear-engaging limiting meshing sleeve mechanism is meshed with a gear in a gear-engaging mode, a shifting fork is prevented from being abraded in the using process, and by arranging the check ring, it can be guaranteed that the service life of the shifting fork is prolonged and abrasion is not prone to occurring when the shifting fork is used.

Description

Technical Field

[0001] The utility model relates to the technical field of tractors, in particular to a gear-engaging and limiting engagement sleeve mechanism. Background Art

[0002] In tractors, the gear limiter clutch mechanism, commonly used in manual transmissions, is an important mechanical structure. Its main function is to ensure accurate shifting between gears and prevent misoperation.

[0003] In the prior art, the operation is difficult, which is not conducive to the use of the user and is inconvenient for the user to shift gears;

[0004] In order to overcome the above-mentioned shortcomings, the Chinese patent of the prior art (Announcement No. CN207005273U) discloses a transmission gear-limiting mechanism. By providing a limit groove on one side of the operating device housing and a hand-feeling column pin on one side of the operating device housing, the booster inner shaft shift head in the operating device housing is provided. When the transmission shifts, when the booster inner shaft shift head rotates to the side of the groove and contacts the hand-feeling column pin, the booster inner shaft shift head cannot continue to rotate, the shift booster input shaft stops moving, and the shift booster output shaft continues to move under the action of the air pressure in the booster cylinder and the inertia force of the self-locking spring in the transmission to push the shift shift head to complete the synchronizer shifting action. The displacement of the shift booster output shaft reaches the same displacement as the booster input shaft. The structure is simple, the gear-limiting is reliable, the versatility is strong, and it is applicable to all transmissions with shift boosters. It not only fully utilizes the boosting effect of the booster, but also does not affect the layout of the control lever system of the main engine manufacturer.

[0005] Although the existing technology can overcome the above-mentioned shortcomings, other problems still exist during its operation, such as: after a long period of use, the device will be greatly worn, which is not conducive to its long-term use, and it is easy to cause damage to the device and shorten its service life. Utility Model Content

[0006] The purpose of the present invention is to provide a gear-limiting engagement sleeve mechanism to solve the problem in the above-mentioned background technology that after a long period of use, the device is subject to great wear, which is not conducive to its long-term use, easily causing damage to the device and shortening its service life.

[0007] To achieve the above object, the present invention provides the following technical solutions: a gear-limiting engagement sleeve mechanism, comprising a housing and an engagement tooth seat disposed inside the housing, and a shift fork disposed above the engagement tooth seat;

[0008] A limited engagement sleeve is provided on the outside of the shift fork, and the limited engagement sleeve is located above the engagement gear seat, and a gear is provided on the outside of the engagement gear seat. A retaining ring is provided on the outside of the limited engagement sleeve, and the limited engagement sleeve limits the position when engaging with the gear, and the retaining ring on the outside of the limited engagement sleeve prevents the shift fork from wearing during use.

[0009] Furthermore, there are two gears, and the middle ends of the gears are on the shaft at the lower end inside the shell.

[0010] Furthermore, a second fixed plate is fixedly installed inside the shell, and a second liquid chamber is fixedly installed on the right side of the second fixed plate, and a push plate is fixedly installed on the right side of the second liquid chamber, and an anti-slip pad is provided on the right side of the push plate, and the anti-slip pad corresponds to the shell outside the gear.

[0011] Furthermore, a second limiting rod is fixedly installed on the left side of the push plate, and the number of the second limiting rods is four, and the left side of the second limiting rod passes through the second fixed plate.

[0012] Furthermore, a first fixing plate is fixedly installed on the left side of the shell, and a fixing bin is fixedly installed on the right side of the first fixing plate, and a first liquid cavity is provided inside the fixing bin, and a liquid guide pipe is provided on the right side of the first liquid cavity, and a second liquid cavity is provided on the right side of the liquid guide pipe.

[0013] Furthermore, a threaded rod is threadedly installed on the middle end of the first fixed plate, and the left side of the threaded rod is knob-shaped, and a pressure plate is rotatably installed on the right end of the threaded rod, and the pressure plate is located inside the fixed chamber, and the pressure plate forms a pressing structure with the first liquid chamber.

[0014] Furthermore, a first limiting rod is fixedly installed on the right side of the first fixing plate, and there are two first limiting rods, and the right side of the first limiting rod passes through the pressure plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. A retaining ring is added to the engagement sleeve to limit the position when the gear is engaged, so as to prevent the shift fork from wearing during use. By setting the retaining ring, the service life of the shift fork can be extended and it is not easy to wear when the shift fork is in use.

[0017] 2. When in use, the threaded rod is rotated by the knob on the left side of the threaded rod on the right side of the first fixed plate. When the threaded rod rotates, it moves to the right along the threaded connection inside the first fixed plate, so that the push plate is limited by the second limit rod and fits the outer side of the gear to the right. Under the action of the anti-slip pad, the rotation of the gear can be made more stable, the stability of the device when shifting gears is improved, it is convenient for the staff to operate, and the transmission efficiency of the device can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the front cross-sectional structure of the position limiting engagement sleeve of the utility model;

[0020] Figure 3 This is a schematic diagram of the front cross-sectional structure of the shift fork of the utility model;

[0021] Figure 4 This is a schematic diagram of the top cross-sectional structure of the fixed warehouse of the utility model;

[0022] Figure 5 For this utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0023] In the figure: 1. Housing; 2. Engaging gear seat; 3. Shift fork; 4. Limit engaging sleeve; 5. Gear; 6. First fixed plate; 7. Fixed chamber; 8. Threaded rod; 9. Pressing plate; 10. First limiting rod; 11. First liquid chamber; 12. Liquid guide pipe; 13. Second liquid chamber; 14. Second fixed plate; 15. Push plate; 16. Second limiting rod; 17. Anti-slip pad. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Example 1: Figure 1 、 Figure 2 and Figure 3 The technical solution shown is a gear-limiting engagement sleeve mechanism. In order to solve the problem that the shift fork 3 has a short service life and is easily worn, the following is disclosed: a housing 1 and an engagement tooth seat 2 arranged inside the housing 1, and a shift fork 3 is arranged above the engagement tooth seat 2, a limited engagement sleeve 4 is arranged on the outside of the shift fork 3, and the limited engagement sleeve 4 is located above the engagement tooth seat 2, and a gear 5 is arranged on the outside of the engagement tooth seat 2, a retaining ring is provided on the outside of the limited engagement sleeve 4, and the limited engagement sleeve 4 limits the position when engaging with the gear 5, and the retaining ring on the outside of the limited engagement sleeve 4 prevents the shift fork 3 from wearing during use, and there are two gears 5, and the middle end of the gear 5 is on the shaft at the lower end of the housing 1;

[0026] In the embodiment, when in use, the position is limited by the limiting engagement sleeve 4 on the meshing gear seat 2, and the interior of the limiting engagement sleeve 4 limits the shift fork 3 through a retaining ring to prevent it from being worn out during use and provide a longer service life.

[0027] Example 2: Figure 1 、 Figure 2 、 Figure 4 and Figure 5 The technical solution shown is based on the first embodiment and is used to solve the problem of unstable gear shifting of the device. The following is disclosed: a second fixing plate 14 is fixedly installed inside the housing 1, and a second liquid chamber 13 is fixedly installed on the right side of the second fixing plate 14, and a push plate 15 is fixedly installed on the right side of the second liquid chamber 13, and an anti-slip pad 17 is provided on the right side of the push plate 15, and the anti-slip pad 17 corresponds to the housing 1 outside the gear 5, a second limiting rod 16 is fixedly installed on the left side of the push plate 15, and the number of the second limiting rods 16 is four, and the left side of the second limiting rod 16 passes through the second fixing plate 14, and the left side of the housing 1 is fixedly installed with a first fixing plate 6, and A fixed bin 7 is fixedly installed on the right side of the first fixed plate 6, and a first liquid cavity 11 is provided inside the fixed bin 7, and a liquid guide pipe 12 is provided on the right side of the first liquid cavity 11, and a second liquid cavity 13 is provided on the right side of the liquid guide pipe 12. A threaded rod 8 is threadedly installed on the middle end of the first fixed plate 6, and the left side of the threaded rod 8 is knob-shaped, and a pressure plate 9 is rotatably installed on the right end of the threaded rod 8, and the pressure plate 9 is located inside the fixed bin 7. The pressure plate 9 and the first liquid cavity 11 form a press-fit structure. A first limiting rod 10 is fixedly installed on the right side of the first fixed plate 6, and the number of the first limiting rods 10 is two, and the right side of the first limiting rod 10 passes through the pressure plate 9.

[0028] When the first gear 5 is engaged, the gear 5 is engaged with the first end of the gear 5 and the second end of the gear 5 is engaged, and the gear 5 is engaged with the first end of the gear 5. When the first gear 5 is engaged, the gear 5 is engaged with the first end of the gear 5 and the second end of the gear 5 is engaged.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gear-engaging limit engagement sleeve mechanism, comprising a housing (1) and an engagement tooth seat (2) disposed inside the housing (1), wherein a shift fork (3) is disposed above the engagement tooth seat (2); Its characteristics are: A limited engagement sleeve (4) is provided on the outside of the shift fork (3), and the limited engagement sleeve (4) is located above the engagement tooth seat (2), and a gear (5) is provided on the outside of the engagement tooth seat (2). A retaining ring is provided on the outside of the limited engagement sleeve (4), and the limited engagement sleeve (4) is limited when engaging with the gear (5), and the retaining ring on the outside of the limited engagement sleeve (4) prevents the shift fork (3) from being worn during use.

2. The gear-engagement limiting engagement sleeve mechanism according to claim 1, characterized in that: There are two gears (5), and the middle ends of the gears (5) are on the shaft at the lower end inside the housing (1).

3. The gear-engagement limiting engagement sleeve mechanism according to claim 1, characterized in that: A second fixed plate (14) is fixedly installed inside the housing (1), and a second liquid chamber (13) is fixedly installed on the right side of the second fixed plate (14), and a push plate (15) is fixedly installed on the right side of the second liquid chamber (13), and an anti-slip pad (17) is provided on the right side of the push plate (15), and the anti-slip pad (17) corresponds to the housing (1) outside the gear (5).

4. The gear-engagement limiting engagement sleeve mechanism according to claim 3, characterized in that: A second limiting rod (16) is fixedly installed on the left side of the push plate (15), and the number of the second limiting rods (16) is four, and the left side of the second limiting rod (16) passes through the second fixed plate (14).

5. The gear-engagement limiting engagement sleeve mechanism according to claim 4, characterized in that: A first fixing plate (6) is fixedly mounted on the left side of the housing (1), and a fixing chamber (7) is fixedly mounted on the right side of the first fixing plate (6), and a first liquid cavity (11) is provided inside the fixing chamber (7), and a liquid guide pipe (12) is provided on the right side of the first liquid cavity (11), and a second liquid cavity (13) is provided on the right side of the liquid guide pipe (12).

6. The gear-engagement limiting engagement sleeve mechanism according to claim 5, characterized in that: A threaded rod (8) is threadedly mounted on the middle end of the first fixed plate (6), and the left side of the threaded rod (8) is knob-shaped, and a pressure plate (9) is rotatably mounted on the right end of the threaded rod (8), and the pressure plate (9) is located inside the fixed chamber (7), and the pressure plate (9) forms a press-fit structure with the first liquid chamber (11).

7. The gear-engagement limiting engagement sleeve mechanism according to claim 6, characterized in that: A first limiting rod (10) is fixedly mounted on the right side of the first fixing plate (6), and there are two first limiting rods (10), and the right side of the first limiting rod (10) passes through the pressing plate (9).

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