Gear locking mechanism

Abstract

The invention provides a gear locking mechanism. Comprising a rack (1), a gear (2), a pressing plate (3), a first key (4), a base (5), a second key (6), a first sealing ring (7), a cylinder body (8), a cylinder barrel (9), a pin shaft (10), a hexagonal shaft (11), a third key (12), a shaft (13), a screw (14), a second sealing ring (15), a cylinder cover (16), a third sealing ring (17) and a disc spring (18). The gear locking mechanism has the advantages of being simple in structure, small in occupied space, reliable in action and the like. According to the invention, stepless reliable locking of the gear is realized, and the locking mode is simple and effective. According to the gear stepless locking device, the hexagonal shaft is mechanically held tightly through the pin shaft to achieve locking, and the problems that in the prior art, locking is not firm or locking is stepped, and reliable stepless locking of the gear cannot be achieved are solved.

Description

Technical Field

[0001] The invention belongs to the field of machinery, and in particular relates to a gear locking mechanism. Background Art

[0002] At present, the existing gear locking mechanisms mainly adopt friction locking or end gear locking, but these gear locking mechanisms have the problem of unreliable locking or stepped locking, and cannot achieve reliable stepless locking of the gears. Therefore, the present invention aims at the above-mentioned shortcomings, and realizes the purpose of reliable stepless locking of the gears by clamping the hexagonal shaft with a hydraulically controlled pin shaft. The present invention has the advantages of simple structure, small space occupation, reliable operation, etc. Summary of the invention

[0003] The object of the present invention is to provide a gear locking mechanism.

[0004] The present invention is achieved through the following technical solutions:

[0005] The present invention relates to a gear locking mechanism, comprising: a rack 1, a gear 2, a pressure plate 3, a first key 4, a base 5, a second key 6, a first sealing ring 7, a cylinder body 8, a cylinder barrel 9, a pin 10, a hexagonal shaft 11, a third key 12, a shaft 13, a screw 14, a second sealing ring 15, a cylinder cover 16, a third sealing ring 17, and a disc spring 18;

[0006] in,

[0007] Gear 2 is meshed and connected with rack 1;

[0008] The pressure plate 3 fixes the axial position of the shaft 13 and the gear 2 by means of screws 14;

[0009] The cylinder 8 is mounted on the base 5 by means of a second key 6 and a screw 14;

[0010] The cylinder barrel 9 is fastened to the cylinder body 8 by means of screws 14;

[0011] The first sealing ring 7 is arranged between the sealing cylinder 9 and the cylinder body 8;

[0012] The cylinder cover 16 is fastened to the cylinder body 8 by means of screws 14 and is sealed by means of the first sealing ring 7 and the second sealing ring 15;

[0013] The pin 10 is mounted on the inner wall of the cylinder 9 and is operatively connected with a hexagonal shaft 11;

[0014] A third sealing ring 17 is installed on the pin shaft 10 , and a disc spring 18 is installed between the bottom of the pin shaft 10 and the cylinder body 8 . Under the action of the disc spring 18 , the pin shaft 10 can be completely retracted to be flush with the inner hole of the cylinder body 8 .

[0015] The hexagonal shaft 11 is connected to the shaft 13 via a third key 12;

[0016] The shaft 13 is connected to the gear 2 via a first key 4;

[0017] An oil port is provided on the cylinder 9. When the gear needs to be locked, the pressure oil is connected. When the gear rotates, the pressure oil is relieved and the gear can rotate freely.

[0018] Preferably, there are nine circles of pins 10 , and the pins 10 on each circle are arranged in a circular shape at equal intervals on the inner wall of the cylinder 9 .

[0019] Preferably, the spacing between the pins 10 on each circle is 18°, and there are 20 pins in total.

[0020] The phase difference of each group of the nine circles of pins 10 is 2°. Since 20 pins are evenly distributed between the pins 10 at 18° intervals on each circle, there are 9 circles in total, and the phase difference of adjacent circles is 2°, so the first circle is consistent with the ninth circle.

[0021] The working principle of the present invention is as follows: the hexagonal shaft 11 is connected to the gear 2 through the shaft 13, the first key 4, and the third key 12, and the gear 2 is meshed with the rack 1; when the gear 2 rotates, the pressure oil in the cylinder 9 is depressurized, and the pin 10 rebounds under the action of the disc spring 18 and is flush with the inner wall of the cylinder 9, and the hexagonal shaft 11 and the gear 2 rotate freely at the same time; when the gear 2 rotates to the right position and stops, and needs to be locked, the pressure oil in the cylinder 9 is pressurized, and the pin 10 is extended under the action of the liquid pressure and contacts with the hexagonal shaft 11. Because the present invention is arranged as nine circles of pins, the pins 10 with phase differences are all extended to press the hexagonal shaft 11, forming a state of approximate mechanical locking. At this time, the hexagonal shaft 11 cannot rotate, so that the gear 2 is also completely locked, and finally the reliable locking of the gear 2 is achieved.

[0022] The present invention has the following advantages:

[0023] (1) The gear locking mechanism of the present invention has the advantages of simple structure, small space occupation, and reliable operation.

[0024] (2) The gear locking mechanism of the present invention realizes stepless and reliable locking of the gear, which is a simple and effective locking method.

[0025] (3) The gear locking mechanism of the present invention achieves locking by mechanically clamping the hexagonal shaft through a pin shaft, thereby solving the problems existing in the prior art: the locking is not firm or the locking is stepped, and reliable stepless locking of the gear cannot be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a gear locking mechanism involved in the present invention;

[0027] Figure 2 yes Figure 1Enlarged view of the AA surface in the middle gear locking mechanism;

[0028] Figure 3 yes Figure 1 Enlarged view of the BB surface in the middle gear locking mechanism;

[0029] Figure 4 yes Figure 1 Enlarged view of CC surface in the middle gear locking mechanism;

[0030] Figure 5 yes Figure 1 A partial enlarged view of

[0031] The accompanying drawings are marked with: 1 is a rack, 2 is a gear, 3 is a pressure plate, 4 is a first key, 5 is a base, 6 is a second key, 7 is a first sealing ring, 8 is a cylinder body, 9 is a cylinder barrel, 10 is a pin shaft, 11 is a hexagonal shaft, 12 is a third key, 13 is a shaft, 14 is a screw, 15 is a second sealing ring, 16 is a cylinder head, 17 is a third sealing ring, and 18 is a disc spring. DETAILED DESCRIPTION

[0032] The present invention is described in detail below in conjunction with specific embodiments. It should be noted that the following embodiments are only further descriptions of the present invention, but the protection scope of the present invention is not limited to the following embodiments.

[0033] Example

[0034] This embodiment relates to a gear locking mechanism. Figure 1 As shown, it includes: a rack 1, a gear 2, a pressure plate 3, a first key 4, a base 5, a second key 6, a first sealing ring 7, a cylinder body 8, a cylinder barrel 9, a pin 10, a hexagonal shaft 11, a third key 12, a shaft 13, a screw 14, a second sealing ring 15, a cylinder cover 16, a third sealing ring 17, and a disc spring 18;

[0035] in,

[0036] Gear 2 is meshed and connected with rack 1;

[0037] The pressure plate 3 fixes the axial position of the shaft 13 and the gear 2 by means of screws 14;

[0038] The cylinder 8 is mounted on the base 5 by means of a second key 6 and a screw 14;

[0039] The cylinder barrel 9 is fastened to the cylinder body 8 by means of screws 14;

[0040] The first sealing ring 7 is arranged between the sealing cylinder 9 and the cylinder body 8;

[0041] The cylinder cover 16 is fastened to the cylinder body 8 by means of screws 14 and is sealed by means of the first sealing ring 7 and the second sealing ring 15;

[0042] The pin 10 is mounted on the inner wall of the cylinder 9 and is connected to the hexagonal shaft 11; see Figure 2-4 shown.

[0043] A third sealing ring 17 is installed on the pin 10, and a disc spring 18 is installed between the bottom of the pin 10 and the cylinder 8. Under the action of the disc spring 18, the pin 10 can be completely retracted and flush with the inner hole of the cylinder 8. Figure 5 shown.

[0044] The hexagonal shaft 11 is connected to the shaft 13 via a third key 12;

[0045] The shaft 13 is connected to the gear 2 via a first key 4;

[0046] An oil port is provided on the cylinder 9. When the gear needs to be locked, the pressure oil is connected. When the gear rotates, the pressure oil is relieved and the gear can rotate freely.

[0047] Preferably, there are nine circles of pins 10 , and the pins 10 on each circle are arranged in a circular shape at equal intervals on the inner wall of the cylinder 9 .

[0048] Preferably, the spacing between the pins 10 on each circle is 18°, and there are 20 pins in total.

[0049] The phase difference of each group of the nine circles of pins 10 is 2°. Since 20 pins are evenly distributed between the pins 10 at 18° intervals on each circle, there are 9 circles in total, and the phase difference of adjacent circles is 2°, so the first circle is consistent with the ninth circle.

[0050] The working process of this embodiment is as follows: when the gear 2 rotates, the pressure oil in the cylinder 9 is depressurized, the pin 10 rebounds under the action of the disc spring 18, and is flush with the inner wall of the cylinder 9, and the hexagonal shaft 11 and the gear 2 rotate freely at the same time; when the gear 2 rotates to the position and stops, and needs to be locked, the pressure oil in the cylinder 9 is pressurized, and the pin 10 extends out under the action of the liquid pressure and contacts with the hexagonal shaft 11. Since the present invention is arranged as nine circles of pins, the pins 10 with phase differences are all extended to press the hexagonal shaft 11, forming a state of approximate mechanical locking. At this time, the hexagonal shaft 11 cannot rotate, so that the gear 2 is also completely locked, and finally the reliable locking of the gear 2 is achieved.

[0051] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art may make various modifications or variations within the scope of the claims, which will not affect the essence of the present invention.

Claims

1. A gear locking mechanism, characterized in that: include: Rack (1), gear (2), pressure plate (3), first key (4), base (5), second key (6), first sealing ring (7), cylinder body (8), cylinder barrel (9), pin (10), hexagonal shaft (11), third key (12), shaft (13), screw (14), second sealing ring (15), cylinder cover (16), third sealing ring (17), disc spring (18); in, The gear (2) is meshingly connected with the rack (1); The pressure plate (3) fixes the axial position of the shaft (13) and the gear (2) by means of screws (14); The cylinder body (8) is mounted on the base (5) by means of a second key (6) and a screw (14); The cylinder barrel (9) is fastened to the cylinder body (8) by means of screws (14); The first sealing ring (7) is arranged between the sealing cylinder (9) and the cylinder body (8); The cylinder cover (16) is assembled on the cylinder body (8) by means of screws (14) and is sealed by means of a first sealing ring (7) and a second sealing ring (15); The pin (10) is mounted on the inner wall of the cylinder (9) and is operatively connected to the cylinder by a hexagonal shaft (11); A third sealing ring (17) is installed on the pin shaft (10), and a disc spring (18) is installed between the bottom of the pin shaft (10) and the cylinder body (8); The hexagonal shaft (11) is connected to the shaft (13) via a third key (12); The shaft (13) is connected to the gear (2) via a first key (4); The cylinder barrel (9) is provided with an oil passage.

2. The gear locking mechanism according to claim 1, characterized in that: The pins (10) are arranged in nine circles, and the pins (10) on each circle are arranged in a circular shape at equal intervals on the inner wall of the cylinder (9).

3. The gear locking mechanism according to claim 2, characterized in that: The spacing between the pins (10) on each circle is 18 degrees, and there are 20 pins in total.

4. The gear locking mechanism according to claim 2, characterized in that: The phase difference of each group of the nine-circle pin shaft (10) is 2°.

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