High-efficiency gearbox structure

Abstract

The utility model belongs to the technical field of gearboxes, and particularly relates to a high-efficiency gearbox structure which comprises a box body, a first air chamber and a second air chamber, the box body is a shell of the whole gearbox, the first air chamber is arranged at one end of the box body, and the second air chamber is arranged at the other end of the box body; the first air chamber comprises a blocking sliding block, the blocking sliding block is arranged in a chamber cavity of the first air chamber in a sleeved mode, the surface of the first air chamber communicates with a first air port, a second air port and a third air port, the first air port and the second air port communicate with the top of the first air chamber and are evenly distributed in the left-right direction, and the third air port is located at the end point of the first air chamber. According to the high-efficiency gearbox structure, the functions of three-gear variable number and neutral gear can be achieved through air inlet cooperation between the two air chambers, and compared with an existing two-gear type gearbox air chamber for a wheel digger in the figure 1, efficient gear shifting can be conducted, the application range of the wheel digger is widened, and therefore wide popularization of wheel digger products is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of gearboxes, and in particular relates to a high-efficiency gearbox structure. Background Art

[0002] The gearbox is a mechanism used to change the speed and torque from the engine. It can change the transmission ratio of the output shaft and the input shaft in a fixed or step-by-step manner. The gearbox consists of a speed transmission mechanism and a control mechanism. Some cars also have a power output mechanism. Most transmission mechanisms use ordinary gear transmission, and some use planetary gear transmission.

[0003] The gearbox used in wheel excavators on the market can only realize two-speed shifting function and has no neutral function. Please refer to the figure in the specification for details. Figure 1 When this type of gearbox is used in wheel excavators, the gear shifting limitations of the wheel excavators will increase, thereby reducing the scope of application. It is inefficient to use and is not conducive to the widespread promotion of wheel excavator products. Utility Model Content

[0004] The purpose of the utility model is to provide a high-efficiency gearbox structure, which can perform efficient gear shifting and improve the application scope of wheel excavators, thereby facilitating the wide promotion of wheel excavator products.

[0005] The technical solutions adopted in this utility are as follows:

[0006] A high-efficiency gearbox structure comprises a box body, a first air chamber and a second air chamber, wherein the box body is the outer shell of the entire gearbox, the first air chamber is arranged at one end of the box body, and the second air chamber is arranged at the other end of the box body;

[0007] The first air chamber comprises a blocking sliding block, the blocking sliding block is sleeved in the chamber cavity of the first air chamber, the surface of the first air chamber is connected with a first air port, a second air port and a third air port, the first air port and the second air port are connected at the top of the first air chamber and are evenly distributed on the left and right, the third air port is located at the end point of the first air chamber, when in different gear positions;

[0008] A second blocking sliding block is sleeved inside the second air chamber, a second air chamber air port is connected to the surface of the second air chamber, and the second air chamber air port is connected to the top of the second air chamber.

[0009] The surfaces of the blocking sliding block and the second blocking sliding block are both provided with two evenly distributed rolling grooves, and balls are rollingly connected inside the rolling grooves.

[0010] The technical effects achieved by this utility model are:

[0011] The utility model discloses a high-efficiency gearbox structure, which can achieve the functions of three-speed variable and neutral gear by the cooperation of air intake between two air chambers. Figure 1The present invention is a two-speed gearbox air chamber for an existing wheel excavator. The present invention can perform efficient gear shifting, improve the application scope of the wheel excavator, and thus facilitate the wide promotion of the wheel excavator products.

[0012] The utility model discloses a high-efficiency gearbox structure, which utilizes a plurality of balls to reduce friction in multiple directions, increase smoothness, and enhance the wear-reducing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the air chamber of a two-speed gearbox for an existing wheel excavator;

[0014] Figure 2 It is an embodiment of this utility;

[0015] Figure 3 This is a practical Figure 1 Rear view of

[0016] Figure 4 This is a practical Figure 1 lateral cross-sectional view;

[0017] Figure 5 This is a cross-sectional schematic diagram of the first air chamber of the present invention when in neutral position;

[0018] Figure 6 This is a cross-sectional schematic diagram of the first air chamber of the utility model in the first gear;

[0019] Figure 7 This is a cross-sectional schematic diagram of the first air chamber of the present invention in the second gear;

[0020] Figure 8 This is a cross-sectional schematic diagram of the second air chamber of the present invention in the third gear;

[0021] Fig. 9 This is a cross-sectional schematic diagram of the second air chamber of the present invention when in neutral position;

[0022] Fig.10 This is a practical Figure 6 A is an enlarged view of the middle image.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Box body; 2. Input shaft; 3. Output shaft; 4. Transmission gear; 5. Blocking sliding block; 6. First air port; 7. Second air port; 8. Third air port; 9. Second blocking sliding block; 10. Second air chamber air port; 11. Rolling groove; 12. Ball; 13. Spring; 14. Driving member. DETAILED DESCRIPTION

[0025] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

[0026] like Figures 1 to 9 As shown, a high-efficiency gearbox structure includes a case 1, a first air chamber and a second air chamber. The case 1 is the outer shell of the entire gearbox and is a container for carrying various gearbox components. It can be connected to the two air chambers at the same time. An input shaft 2 and an output shaft 3 are sleeved inside the case 1. The input shaft 2 and the output shaft 3 are arranged in parallel inside the case 1 and can rotate inside the case 1. Three transmission gears 4 are fixedly connected to the surfaces of the input shaft 2 and the output shaft 3. The transmission gears 4 are important components for power transmission and speed change. Different transmission efficiencies can be achieved inside the case 1 by utilizing the cooperation between gears of different diameters, thereby completing the number of different gears. A total of six gears on the input shaft 2 and the output shaft 3 have the same diameter. Two adjacent gears on the input shaft 2 and the output shaft 3 mesh with each other. As for other components of the air chamber, reference can be made to the known structures and technologies in the existing gearbox field. This application is only an improvement made in the cooperation of the air port. The first air chamber is arranged at one end of the case 1, and the second air chamber is arranged at the other end of the case 1.

[0027] The first air chamber includes a blocking sliding block 5, which is sleeved in the chamber cavity of the first air chamber. The blocking sliding block 5 is a force-bearing component when the air pressure is pushed, and can slide axially in the chamber cavity of the first air chamber under the drive of the gas. The blocking sliding block 5 is sleeved on the surface of the shaft body of the first air chamber, which can drive the shaft body to move. The surface of the first air chamber is connected with a first air port 6, a second air port 7 and a third air port 8. The first air port 6 and the second air port 7 are connected to the top of the first air chamber and are evenly distributed on the left and right. The third air port 8 is located at the end point of the first air chamber. When in different gears, air can be inflated from different air ports toward the inside of the first air chamber, so that the shaft body of the first air chamber can achieve different lengths of extension effects by utilizing the cooperation of air pressure and the blocking sliding block 5, thereby driving the gears inside the housing 1 to move, so that in a specific gear position, a specific gear is engaged, and the other gears are idle.

[0028] A second blocking sliding block 9 is sleeved inside the second air chamber, and the second blocking sliding block 9 is sleeved on the surface of the second air chamber shaft body, and has the same function as the blocking sliding block 5. The surface of the second air chamber is connected with a second air chamber air port 10, and the second air chamber air port 10 is connected to the top of the second air chamber. Similar to the first air chamber, the second air chamber can be filled with gas through the second air chamber air port 10 to drive the shaft body of the second air chamber to extend and retract.

[0029] In neutral gear: the first air port 6 is cut off, the second air port 7 is inlet, and the third air port 8 is inlet, and the gas on both sides of the blocking sliding block 5 is used to push the blocking sliding block 5 to the center, and no gear set is driven to mesh, so that the shaft body is in the neutral gear state;

[0030] In the first gear: the first air port 6 is shut off, the second air port 7 is inlet, the third air port 8 is shut off, and the second air port 7 is used to input air from the right side, thereby pushing the blocking sliding block 5 to move leftward, the driving shaft body retracts, and is in the first gear state, driving the first gear gear to mesh, at this time, the leftmost first gear gear set inside the box body 1 is meshed, and the other two sets are separated and idle;

[0031] In the second gear: the first air port 6 takes in air, the second air port 7 stops air, the third air port 8 stops air, and the first air port 6 is used to input air from the left side, thereby pushing the blocking sliding block 5 to move rightward, the driving shaft body extends, and is in the second gear state, driving the second gear gear to mesh. At this time, the second gear gear set in the middle of the box body 1 is meshed, and the other two sets are separated and idle;

[0032] In the third gear: the second air chamber air port 10 takes in air, and the first air port 6, the second air port 7 and the third air port 8 are cut off. The gas entering the second air chamber air port 10 is used to squeeze the second blocking sliding block 9 to the right from the left, so that the shaft of the second air chamber retracts to the right, and is in the third gear state, driving the third gear gear to engage. At this time, the third gear position on the far right of the box body 1 is engaged, and the other two groups are separated and idling. In the neutral gear and the other two gears, the second air chamber air port 10 is cut off.

[0033] like Fig.10 As shown, two evenly distributed rolling grooves 11 are provided on the surfaces of the blocking sliding block 5 and the second blocking sliding block 9, and balls 12 are rollingly connected inside the rolling grooves 11. The balls 12 fit against the inner wall of the air chamber, thereby reducing friction and avoiding wear between the air chamber and the blocking sliding block 5 and the second blocking sliding block 9.

[0034] like Fig.10 As shown, there are a plurality of balls 12 evenly distributed inside the rolling groove 11. By using a plurality of balls 12, friction can be reduced in multiple directions, smoothness can be increased, and the wear reduction effect can be enhanced.

[0035] like Fig. 9 As shown, a spring 13 is fixedly connected inside the second air chamber, and the spring 13 is fixedly connected to the second blocking sliding block 9. When the second blocking sliding block 9 is compressed, the spring 13 will be driven to contract at the same time. When the gas input is stopped, the spring 13 can drive the second blocking sliding block 9 to reset. When there is only one air port, the second blocking sliding block 9 can have the effect of self-resetting.

[0036] like Figure 5 and Figure 8As shown, the diameter of the blocking sliding block 5 and the second blocking sliding block 9 is larger than the diameter of the first air chamber and the second air chamber shaft. The blocking sliding block 5 and the second blocking sliding block 9 form a step on the first air chamber and the second air chamber shaft, thereby increasing the contact area with the gas and ensuring that the gas can fully push the blocking sliding block 5 and the second blocking sliding block 9.

[0037] like Figure 5 As shown, a driving member 14 is provided inside the first air chamber, and the driving member 14 can slide inside the first air chamber. When the third air port 8 takes in air, the gas can push the driving member 14 to drive the shaft and the blocking sliding block 5, thereby compensating for the distance between the air port and the blocking sliding block 5, and avoiding the existence of the distance affecting the pushing efficiency of the air pressure.

[0038] The working principle of the utility model is as follows: when in use, the first air chamber or the second air chamber can be inflated according to the gear selection, so as to drive the shaft body by utilizing the air pressure and the cooperation of the blocking sliding block 5 and the second blocking sliding block 9, and then utilize the sliding of the shaft body to drive the meshing of different gears, as follows:

[0039] In neutral gear: the first air port 6 is cut off, the second air port 7 is inlet, and the third air port 8 is inlet, and the gas on both sides of the blocking sliding block 5 is used to push the blocking sliding block 5 to the center, and no gear set is driven to mesh, so that the shaft body is in the neutral gear state;

[0040] In the first gear: the first air port 6 is shut off, the second air port 7 is inlet, the third air port 8 is shut off, and the second air port 7 is used to input air from the right side, thereby pushing the blocking sliding block 5 to move leftward, the driving shaft body retracts, and is in the first gear state, driving the first gear gear to mesh, at this time, the leftmost first gear gear set inside the box body 1 is meshed, and the other two sets are separated and idle;

[0041] In the second gear: the first air port 6 takes in air, the second air port 7 stops air, the third air port 8 stops air, and the first air port 6 is used to input air from the left side, thereby pushing the blocking sliding block 5 to move rightward, the driving shaft body extends, and is in the second gear state, driving the second gear gear to mesh. At this time, the second gear gear set in the middle of the box body 1 is meshed, and the other two sets are separated and idle;

[0042] In the third gear: the second air chamber port 10 takes in air, the first air port 6, the second air port 7 and the third air port 8 are cut off, and the gas entering the second air chamber port 10 is used to squeeze the second blocking sliding block 9 to the right from the left, so that the shaft of the second air chamber retracts to the right, and is in the third gear state, driving the third gear gear to mesh. At this time, the third gear position on the far right of the box body 1 is meshed, and the other two groups are separated and idling. In the neutral gear and the other two gears, the second air chamber port 10 is cut off;

[0043] Compared with the existing single air chamber structure, this gearbox can use the cooperation between two air chambers to complete the change of three gears, improve the speed change efficiency, and facilitate people's use.

[0044] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A high-efficiency gearbox structure, comprising a housing (1), a first air chamber and a second air chamber, characterized in that: The housing (1) is the outer shell of the entire gearbox, the first air chamber is arranged at one end of the housing (1), and the second air chamber is arranged at the other end of the housing (1); The first air chamber comprises a blocking sliding block (5), the blocking sliding block (5) is sleeved in the chamber cavity of the first air chamber, the surface of the first air chamber is connected with a first air port (6), a second air port (7) and a third air port (8), the first air port (6) and the second air port (7) are connected at the top of the first air chamber and are evenly distributed on the left and right, the third air port (8) is located at the end point of the first air chamber, when in different gear positions; A second blocking sliding block (9) is sleeved inside the second air chamber, and a second air chamber air port (10) is connected to the surface of the second air chamber, and the second air chamber air port (10) is connected to the top of the second air chamber.

2. A high-efficiency gearbox structure according to claim 1, characterized in that: The surfaces of the blocking sliding block (5) and the second blocking sliding block (9) are both provided with two evenly distributed rolling grooves (11), and balls (12) are rollingly connected inside the rolling grooves (11).

3. A high-efficiency gearbox structure according to claim 2, characterized in that: The number of the balls (12) is several and they are evenly distributed inside the rolling groove (11).

4. A high-efficiency gearbox structure according to claim 1, characterized in that: A spring (13) is fixedly connected inside the second air chamber, and the spring (13) is fixedly connected to the second blocking sliding block (9).

5. A high-efficiency gearbox structure according to claim 1, characterized in that: The diameters of the blocking sliding block (5) and the second blocking sliding block (9) are greater than the diameters of the shafts of the first air chamber and the second air chamber.

6. A high-efficiency gearbox structure according to claim 1, characterized in that: A driving member (14) is sleeved inside the first air chamber, and the driving member (14) can slide inside the first air chamber.

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