Bulldozer with high driving structure

Abstract

The invention provides a high-drive structure bulldozer which comprises a cab and a hydraulic transmission system, walking mechanisms are arranged on the two sides of the lower portion of the cab, a driving mechanism is arranged on one side of the cab, a first oil cylinder is arranged on one side of the driving mechanism, a bulldozing bucket is arranged at the output end of the first oil cylinder, and a second oil cylinder is arranged on one side of the bulldozing bucket. The hydraulic transmission system is characterized in that the hydraulic transmission system comprises a pump body and two rotating shafts arranged in parallel, a front pump cavity is formed in the front end of the pump body, a rear pump cavity is formed in the rear end of the pump body, and the rotating shafts penetrate through the front pump cavity and the rear pump cavity; a base and an armrest box are arranged in the cab, and the armrest box can be adjusted in the vertical direction and the horizontal direction so as to meet the requirements of different arm extension lengths; compared with other common bulldozers, the bulldozer has better performance, and stable operation under various complex working conditions is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of engineering machinery, and in particular to a bulldozer with a high driving structure. Background Art

[0002] In engineering vehicles, the driving sprocket of a high-drive bulldozer is far away from the ground and higher than the driving sprocket position of an ordinary bulldozer, which avoids the direct impact load of an ordinary bulldozer due to the contact between the driving sprocket and the ground, making the high-drive bulldozer more adaptable to various complex working environments. In order to provide the performance of the high-drive bulldozer, optimize the internal connection structure of the engine, and improve the driver's comfort and work efficiency, an armrest box is usually set up in the cab. The armrest box not only provides space for placing items, but also supports the arms and reduces fatigue. Considering that drivers of different heights may require different armrest heights and positions, the armrest box is designed to be adjustable, so that the driver can easily adjust the height of the armrest according to personal preferences and body size. In addition, while adjusting the height of the armrest box, it also has a horizontal adjustment function to meet the needs of different arm span lengths.

[0003] Moreover, the hydraulic transmission system is an important component of the bulldozer. Its main applications include adjusting the blade height, blade inclination, and stabilizing the dipper arm. It has the advantages of high reliability, fast response speed, large output power, and stable performance. It can achieve a flexible working mode of rapid acceleration or deceleration in a very short time. During the working process of the hydraulic transmission system, a hydraulic pump is often required to provide power for the hydraulic transmission system, so that the hydraulic oil can output power. According to different usage scenarios, the structural design of the hydraulic pump is also different.

[0004] For example, the patent document with patent application number 202011012827.6 and publication date 2021.01.08 discloses a hydrostatic bulldozer using a high-drive structure, which relates to the technical field of bulldozers, and aims to solve the problems that the existing bulldozers are bulky to operate, have poor flexibility, and the operators work extremely hard, and the energy utilization rate of engineering machinery is low, and it is not energy-saving and environmentally friendly. The high-drive bulldozer is provided with a cab at the upper end, a traveling track at the lower end of the cab, an engine compartment is provided on one side of the cab, a lifting cylinder is provided on one side of the engine compartment, a bulldozer bucket is provided at the lower end of the lifting cylinder, a tilting cylinder is provided on one side of the bulldozer bucket, a grounding support plate is provided at the lower end of the bulldozer bucket, an auxiliary grounding roller is provided inside the grounding support plate, and a tiller is installed at the tail of the high-drive bulldozer.

[0005] The above documents only describe the external structure of the bulldozer, but not the armrest box structure in the cab. In order to ensure the stability and safety of the armrest box when adjusting the height and horizontal position, a reliable adjustment device structure is required so that the armrest box can ensure stability and reliability under various working conditions. Moreover, since bulldozer equipment is generally large in size, the hydraulic transmission system occupies a large space. In the hydraulic transmission system of the bulldozer, in specific application scenarios, a quintuple pump is required to provide power for the hydraulic transmission system. The existing quintuple pump generally achieves different driving power requirements by setting five different cavities and respectively setting driving devices in the cavities, but this structure makes the entire structure complicated. Summary of the invention

[0006] The present invention provides a bulldozer with a high-drive structure, which has better performance than other common bulldozers, ensures stable operation under various complex working conditions, and has a simple structure. To achieve the above-mentioned purpose, the technical scheme of the present invention is: a bulldozer with a high-drive structure, including a cab and a hydraulic transmission system, walking mechanisms are arranged on both sides below the cab, and a driving mechanism is arranged on one side of the cab, characterized in that: the hydraulic transmission system includes a pump body and two parallel rotating shafts, a front pump chamber is arranged inside the front end of the pump body, a rear pump chamber is arranged inside the rear end of the pump body, and the rotating shaft passes through the front pump chamber and the rear pump chamber; an oil inlet is arranged on one side of the front pump body, three pump chambers are arranged in the front pump body, two pump chambers are arranged in the rear pump body, and a first oil outlet, a second oil outlet, a fourth oil outlet and a fifth oil outlet are arranged on one side of the rear pump body, the first oil outlet is connected to a pump chamber of the front pump body, the second oil outlet is connected to the two pump chambers of the front pump body, the fourth oil outlet and the fifth oil outlet are connected to the two pump chambers of the rear pump body respectively, and the first oil outlet and the second oil outlet are arranged to be inclined outward and upward along the axial direction of the pump body; A base and an armrest box are provided in the cab, a height adjustment mechanism is provided between the base and the armrest box, the height adjustment mechanism includes a sliding plate, the upper end of the sliding plate is fixedly connected to the armrest box, a driving assembly is provided on the base, the driving assembly is fixedly connected to the sliding plate and drives the sliding plate to move up and down, a moving plate is provided on the armrest box, a horizontal adjustment mechanism is provided between the moving plate and the sliding plate, the horizontal adjustment mechanism drives the moving plate and the sliding plate to be slidably connected, a limit assembly is provided between the moving plate and the sliding plate, the limit assembly is connected to the moving plate, the limit assembly is connected to the sliding plate in an opening and closing connection, and when the limit assembly is opened and connected to the sliding plate, the horizontal adjustment mechanism drives the moving plate to move horizontally on the sliding plate.

[0007] The above arrangement, by arranging a pump body and two parallel rotating shafts in the hydraulic transmission system, and by arranging three pump chambers on the front pump body, and two pump chambers on the rear pump body, and forming four oil outlets on the front pump body and the rear pump body, can meet the needs of five pump bodies and multiple output hydraulic control. In addition, the two oil outlets of the front pump body are arranged on one side surface of the rear pump body, so as to facilitate external connection pipelines, so that the entire hydraulic drive system has a simple structure and occupies a small volume. In addition, the first oil outlet and the second oil outlet are arranged to be inclined upward and outward, which can facilitate external connection pipelines while meeting the small volume, thereby meeting the needs of the bulldozer with the front pump chamber. The power output of the mechanism connected to the rear pump chamber is realized to realize the actual operation needs of the bulldozer. An armrest box is arranged on the base of the cab, and a sliding plate is arranged between the base and the armrest box. The sliding plate is connected to the armrest box. A driving assembly is arranged on the sliding plate, and the sliding plate can be driven to move by the driving assembly, so that the sliding plate drives the armrest box to move. The armrest box is provided with a movable plate, and the movable plate can move in a horizontal direction relative to the sliding plate, thereby completing the horizontal movement of the armrest box. From the setting of the armrest box in the cab and the setting of the hydraulic drive system, the occupied volume is small and the drive in various different situations can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is the front view of the present invention.

[0009] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0010] Figure 3 It is a side view of the present invention.

[0011] Figure 4 It is a schematic diagram of the mounting seat structure in the present invention.

[0012] Figure 5 It is the front view of the structural engine body in the present invention.

[0013] Figure 6 for Figure 5 Enlarged view of point B in the middle.

[0014] Figure 7 It is a schematic diagram of the overall structure of the pump body in the present invention.

[0015] Figure 8 This is a schematic diagram of the overall structure of the pump body in the present invention from another perspective.

[0016] Fig. 9 It is the front view of the pump body in the present invention.

[0017] Fig.10 for Fig. 9 Middle K-axis view.

[0018] Fig.11 It is a side view of the pump body of the present invention.

[0019] Fig.12 for Fig.11 Center P view.

[0020] Fig.13 It is a cross-sectional view of the pump body in the present invention.

[0021] Fig.14 It is a partial exploded view of the pump body in the present invention.

[0022] Fig.15 for Fig.14 Enlarged view of center C.

[0023] Fig.16 for Fig.14 Enlarged view of point D in the middle.

[0024] Fig.17 It is the front view of the armrest box in the present invention.

[0025] Fig.18 This is a partial exploded view of the armrest box in the present invention. Figure 1 .

[0026] Fig.19 for Fig.18 Enlarged view of point E in the middle.

[0027] Fig. 20 It is the front view of the base in the present invention.

[0028] Fig.21 The partial explosion of the armrest box in the present invention Figure 2 .

[0029] Fig. 22 for Fig.21 Enlarged view of point F in the middle.

[0030] Fig.23 It is the front view of the sliding plate in the present invention.

[0031] Fig.24 for Fig.23 Enlarged view of point G in the middle.

[0032] Fig.25 This is a partial exploded view of the armrest box in the present invention. Figure 3 .

[0033] Fig.26 The partial explosion of the armrest box in the present invention Figure 4 .

[0034] Fig. 27 for Fig.26 Enlarged view of point H in the middle.

[0035] Fig.28 The partial explosion of the armrest box in the present invention Figure 5 .

[0036] Description of the accompanying drawings: 1A-cab; 2A-driving mechanism; 21A-engine body; 211A-first connecting pipe; 212A-second connecting pipe; 213A-connecting plate; 3A-first oil cylinder; 4A-bulldozer; 41A-mounting hole; 5A-ripper; 6A-traveling mechanism; 61A-traveling track; 62A-driving wheel; 63A-guide wheel; 64A-hydraulic push rod; 65A-supporting wheel; 7A-connecting seat; 71A-first mounting hole; 72A-second mounting hole; 8A-second oil cylinder; 1-base; 11-sliding plate; 111-driving rod; 1111-output shaft; 112-first guide rod; 113-second guide rod; 12-first fixed plate; 121-notch; 1211-universal joint; 13-second fixed plate; 14-third fixed plate; 141-guide sleeve; 142-fixed seat; 115-support platform; 116-positioning plate; 1161-positioning cavity; 2-armrest box; 21-lower cover; 211-moving plate; 2111-ear plate; 212-elastic member; 213-front bottom plate; 22-upper cover; 221-through hole; 23-armrest frame; 3-limiting rod; 31-limiting block; 1Z-pump body; 11Z-first pump chamber; 12Z-second pump chamber; 13Z-third pump chamber; 14Z-fourth pump chamber; 15Z-fifth pump chamber; 01Z-front end; 02Z-rear end; 2Z-locking piece; 21Z-first oil outlet; 22Z-second oil outlet; 23Z-third oil outlet; 24Z-fourth oil outlet; 25Z-fifth oil outlet; 3Z-front rotating shaft body; 30Z-first front rotating shaft body; 31Z-first gear; 32Z-second gear; 33Z-third gear; 4Z-rear rotating shaft body; 41Z-first rear rotating shaft body; 44Z-fourth oil inlet; 45Z-fifth oil outlet; 5Z-oil inlet; 6Z-first through cavity; 61Z-second through cavity; 7Z-mounting seat. DETAILED DESCRIPTION

[0037] Embodiment 1. like Figure 1-28 As shown, a high-drive structure bulldozer includes a cab 1A and a hydraulic transmission system, a walking mechanism 6A is arranged on both sides below the cab 1A, a driving mechanism 2A is arranged on one side of the cab 1A, a first oil cylinder 3A is arranged on one side of the driving mechanism 2A, a bulldozer 4A is arranged at the output end of the first oil cylinder 3A, a second oil cylinder 8A is arranged on one side of the bulldozer 4A, a ripper 5A is arranged on the other side of the cab 1A, and the hydraulic transmission system includes a pump body 1 and two parallel rotating shafts, a front pump chamber is arranged inside the front end 01 of the pump body 1, a rear pump chamber is arranged inside the rear end 02 of the pump body 1, and the rotating shaft runs through the front pump chamber and the rear pump chamber; The cab 1A is provided with a base 1 and an armrest box 2, which are connected to each other, and a height adjustment mechanism is provided between the base 1 and the armrest box 2, and the height adjustment mechanism includes a sliding plate 11, and a driving assembly is provided on the sliding plate 11. The armrest box 2 is provided with a moving plate 211, and a horizontal adjustment mechanism is provided between the moving plate 211 and the sliding plate 11. The moving plate 211 and the sliding plate 11 are slidably connected. An armrest box 2 is provided on the base 1, and a sliding plate 11 is provided between the base 1 and the armrest box 2. The sliding plate 11 is connected to the armrest box 2, and a driving assembly is provided on the sliding plate 11. The sliding plate 11 can be driven to move by the driving assembly, so that the sliding plate 11 drives the armrest box 2 to move. The armrest box 2 is provided with a moving plate 211, and the moving plate 211 can move in the horizontal direction relative to the sliding plate 11, thereby completing the horizontal movement of the armrest box 2.

[0038] like Figure 2-4 As shown, a mounting hole 41A is provided on the bulldozer bucket 4A, and a tool for bulldozing can be connected to the bulldozer bucket 4A through the mounting hole 41A. Different types of tools can be selected according to different working conditions.

[0039] The walking mechanism 6A includes two traveling tracks, and a hydraulic push rod 64A is arranged inside the two traveling tracks. Guide wheels 63A and driving wheels 62A are arranged at both ends of the hydraulic push rod 64A, and the driving wheels 62A and the guide wheels 63A are both connected to the traveling tracks in a transmission manner. A plurality of supporting rollers 65A are arranged at the lower end of the hydraulic push rod 64A, and the plurality of supporting rollers 65A are all connected to the traveling tracks in a transmission manner. The hydraulic push rod 64A arranged inside the traveling tracks plays a role in bearing the guide wheels 63A and the driving wheels 62A, and the plurality of supporting rollers 65A arranged at the lower end of the hydraulic push rod 64A plays a role in assisting the traveling tracks in a stable manner.

[0040] A connecting seat 7A is arranged between the two hydraulic push rods 64A, and the connecting seat 7A is connected to the bulldozer bucket 4A. A first mounting hole 71A and a second mounting hole 72A are arranged on the connecting seat 7A. The two hydraulic push rods 64A are connected through the first mounting hole 71A, and the second mounting hole 72A is connected to the output end of the first oil cylinder 3A. A first mounting hole 71A and a second mounting hole 72A are arranged on the connecting seat 7A, and the first oil cylinder 3A is connected to the second mounting hole 72A. The two hydraulic push rods 64A are connected through the first mounting hole 71A. When the first oil cylinder 3A drives the bulldozer bucket 4A to move, the two hydraulic push rods 64A can be driven to move through the connecting seat 7A.

[0041] like Figure 5-6As shown, the driving mechanism 2A includes an engine body 21A, and the engine body 21A is provided with a first connecting pipe 211A and a second connecting pipe 212A, and a connecting plate 213A is provided between the first connecting pipe 211A and the second connecting pipe 212A.

[0042] like Figure 7-16As shown, it includes a pump body 1Z and two parallel rotating shafts, a front pump chamber is provided inside the front end 01Z of the pump body 1Z, a rear pump chamber is provided inside the rear end 02Z of the pump body 1Z, the front end 01Z and the rear end 02Z of the pump body are detachably connected via a locking piece 2Z, so that the front end 01Z and the rear end 02Z of the pump body 1Z can be connected to form a whole through the locking piece 2Z, and it is also convenient for disassembly and assembly during maintenance, the rotating shaft passes through the front pump chamber and the rear pump chamber, the rotating shaft includes a front rotating shaft body 3Z and a rear rotating shaft body 4Z, the front rotating shaft body 3Z is detachably connected to the rear rotating shaft body 4Z, the front rotating shaft body 3Z passes through the front pump chamber, the rear rotating shaft body 4Z passes through the rear pump chamber, the volume of the front pump chamber is smaller than the volume of the rear pump chamber, the front pump chamber includes a first pump chamber 11Z , the second pump chamber 12Z and the third pump chamber 13Z, the first pump chamber 11Z, the second pump chamber 12Z and the third pump chamber 13Z are connected in series to form a whole, an oil inlet 5Z is provided on one side of the front pump chamber, and a first oil outlet 21Z and a second oil outlet 22Z are provided on the other side of the front pump chamber, the first oil outlet 21Z is connected with the first pump chamber 11Z, in this embodiment, a first through cavity 6Z and a second through cavity 61Z are provided on the pump body 1Z, the first pump chamber 11Z is connected with the first oil outlet 21Z through the first through cavity 6Z, the second pump chamber 12Z is ​​connected with the second oil outlet 22Z through the second through cavity 61Z, the first through cavity 6Z and the second through cavity 61Z are both arranged through the pump body 1Z from the front end to the rear end, and the first oil outlet 21Z is inclined outward along the axial direction of the pump body 1 The second oil outlet 22Z is ​​tilted outward along the axial direction of the pump body 1Z, and the second oil outlet 22Z is ​​connected to the second pump chamber 12Z and the third pump chamber 13Z respectively. The first oil outlet 21Z and the second oil outlet 22Z are arranged in parallel on one side of the rear pump chamber, and the first oil outlet 21Z and the second oil outlet 22Z are tilted outward along the axial direction of the pump body. In this way, due to the limited volume of the pump body 1Z, the distance between the first through chamber and the second through chamber is small. When the distance is too small, there is no distance connector on the first oil outlet 21Z and the second oil outlet 22Z, so that the two oil outlets are tilted outward to increase the distance and facilitate the installation of the connector. The front pump chamber is provided with respective connecting pieces connected to the first pump chamber 11Z, the second pump chamber 12Z and the third pump chamber 13Z. The front gear assembly corresponding to the cavity 13Z can make the hydraulic oil enter the front pump cavity through the oil inlet 5Z, so that the first pump cavity 11Z, the second pump cavity 12Z and the third pump cavity 13Z can be filled with hydraulic oil. Under the drive of the front gear assembly, the first oil outlet 21Z connected with the first pump cavity 11Z through the first through cavity 6Z and the second oil outlet 22Z connected with the second pump cavity 12Z and the third pump cavity 13Z through the second through cavity 61Z can output different pressures to the outside at the same time. The front gear assembly is fixedly sleeved on the front rotating shaft body 3Z. The front gear assembly includes a first gear assembly, a second gear assembly and a third gear assembly. The first gear assembly is arranged in the first pump cavity 11Z, and the second gear assembly is arranged in the second pump cavity 12Z.The third gear assembly is arranged in the third pump chamber 13Z, and then through the rotation of the rotating shaft, it can drive the first gear assembly, the second gear assembly, and the third gear assembly to squeeze the hydraulic oil in the first pump chamber 11Z, the second pump chamber 12Z, and the third pump chamber 13Z respectively, and then output different pressures through the first oil outlet 21Z and the second oil outlet 22 respectively. In this embodiment, the first gear assembly, the second gear assembly and the third gear assembly are all fixedly sleeved on the front rotating shaft body 3Z, and the first gear assembly includes two first-one gears 31Z, and the two first-one gears 31Z are respectively fixedly sleeved on the front rotating shaft bodies 3Z of the two rotating shafts, and the two first-one gears 31Z are externally meshed and connected. Then, the second gear assembly includes two second gears 32, the two second gears 32Z are fixedly sleeved on the front shaft bodies 3 of the two shafts, and the two second gears 32Z are externally meshed. The third gear assembly includes two third gears 33Z, the two third gears 33Z are fixedly sleeved on the front shaft bodies 3Z of the two shafts, and the two third gears 33Z are externally meshed. There is a gap between the first gear 31Z, the second gear 32Z and the third gear 33Z on the same shaft, so that the first gear 31Z, the second gear 32Z and the third gear 33Z can rotate synchronously in the front pump chamber without interfering with each other. In this embodiment, the locking member 2Z is ​​a bolt and a nut.

[0043] like Figure 7 , Fig.13 , Fig.14 and Fig.15As shown, the rear pump chamber includes a fourth pump chamber 14Z and a fifth pump chamber 15Z, the fourth pump chamber 14Z and the fifth pump chamber 15Z are separated, a fourth oil outlet 24Z and a fifth oil outlet 25Z are provided on one side of the rear pump chamber, a fourth oil inlet 44Z and a fifth oil inlet 45Z are provided on the other side of the rear pump chamber, the fourth oil outlet 24Z and the fourth oil inlet 44Z are both connected to the fourth pump chamber 14Z, the fifth oil outlet 25Z and the fifth oil inlet 45Z are both connected to the fifth pump chamber 15Z, and the rear pump chamber is provided with oil ports opposite to the fourth pump chamber 14Z and the fifth pump chamber 15Z. The corresponding rear gear assembly can make the hydraulic oil enter the rear pump chamber through the fourth oil inlet 44Z and the fifth oil inlet 45Z, so that the fourth pump chamber 14Z and the fifth pump chamber 15Z can be filled with hydraulic oil. Under the drive of the rear gear assembly, the fourth oil outlet 24Z connected to the fourth pump chamber 14Z and the fifth oil outlet 25Z connected to the fifth pump chamber 15Z can simultaneously output different pressures to the outside. The rear shaft body 4Z runs through the rear pump chamber. The rear gear assembly is fixedly sleeved on the rear shaft body 4 of the shaft. The rear gear assembly includes a fourth gear set The fourth gear assembly and the fifth gear assembly are respectively sleeved on the rear shaft body 4Z of the rear shaft body, the fourth gear assembly is arranged in the fourth pump chamber 14Z, and the fifth gear assembly is arranged in the fifth pump chamber 15Z, and then through the rotation of the rear shaft, the fourth gear assembly and the fifth gear assembly can be driven to squeeze the hydraulic oil in the fourth pump chamber 14Z and the fifth pump chamber 15Z respectively, and then different pressures are output through the fourth oil outlet 24Z and the fifth oil outlet 25Z. The fourth gear assembly includes two fourth four gears 34Z and two fourth four gears 34Z are respectively fixedly sleeved on the rear rotating shaft bodies 4Z of the two rotating shafts, and the two fourth fourth gears 34Z are externally meshed and connected. The fifth gear assembly includes two fifth fifth gears 35Z, and the two fifth fifth gears 35Z are respectively fixedly sleeved on the rear rotating shaft bodies 4Z of the two rotating shafts, and the two fifth fifth gears 35Z are externally meshed and connected, so that the fourth fourth gear 34Z and the fifth fifth gear 35Z can respectively squeeze the hydraulic oil in the fourth pump chamber 14Z and the fifth pump chamber 15Z after rotating in the fourth pump chamber 14Z and the fifth pump chamber 15Z, thereby providing power to the outside.In the present embodiment, the rear shaft body 4Z includes a first rear shaft body 41Z, one end of the first rear shaft body 41Z is rotatably connected to the front end of the pump body 1Z, the other end of the first rear shaft body 41Z is rotatably connected to the inner wall of the rear pump chamber, the first rear shaft body 41Z is hollow, and an opening is provided on the outer side wall of the end of the first rear shaft body 41Z away from the front shaft body 3Z, the opening and the hollow structure of the first rear shaft body 41Z form a fourth through cavity (not marked in the figure), one end of the fourth through cavity is connected to the fourth pump chamber 14Z through the opening (not marked in the figure), the other end of the fourth through cavity is connected to the fourth oil outlet 24Z, the fourth oil outlet 24Z is arranged at the end surface close to the fifth pump chamber 15Z, a fourth gear in the fourth gear assembly is provided on the first rear shaft body 41Z, the first rear shaft body 41Z is arranged parallel to the rear shaft body 4 On the one hand, 1Z is used to install a fourth gear, and on the other hand, it can make the hydraulic oil flow into the fourth oil outlet 24Z after passing through the fifth pump chamber from the fourth through cavity of the rear rotating shaft body 41, so that the hydraulic oil in the fourth pump chamber 14Z separated from the fifth pump chamber 15Z can pass through the fifth pump chamber 15Z from the rear rotating shaft body 41Z and then output power from the fourth oil outlet 24Z at the end surface of the fifth pump chamber 15Z, which meets the structural setting of the structural parts in the bulldozer. The front rotating shaft body 3 includes a first front rotating shaft body 30Z, the first front shaft body 30Z is arranged parallel to the front rotating shaft body 3Z, and one end of the first front shaft body 30Z close to the rear rotating shaft body is rotatably arranged with the inner wall of the rear pump chamber, and the other end of the first front shaft body 30Z is rotatably arranged with the inner wall of the front pump chamber, and the first front shaft body 30Z is fixedly sleeved with a first gear assembly, a second gear assembly and a third gear assembly.

[0044] One end of the rotating shaft is fixedly connected to the output end of the driving device. In the present embodiment, the driving device comprises a driving motor (not shown in the figure), which is mounted on a mounting seat 7Z at the front end of the pump body 1Z. The end of the front rotating shaft body 3Z away from the connection with the rear rotating shaft body 4Z is fixedly connected to the output end of the driving motor. The end of the fifth pump chamber 15Z is rotatably connected to other structural parts in the hydraulic transmission system of the bulldozer, so that the end of the rear rotating shaft body 4Z away from the connection with the front rotating shaft body 3Z passes through the fifth pump chamber 15Z and is rotatably connected to other structural parts in the hydraulic transmission system of the bulldozer. In this way, the rotating shaft can be driven to rotate by the driving motor.

[0045] In this embodiment, the first pump chamber 11Z, the second pump chamber 12Z and the third pump chamber 13Z are connected in series to form a whole and then separated from the fourth pump chamber 14Z. A sealing ring (not marked in the figure) is provided at the connection point where the rear rotating shaft body 4Z passes through the partition plate (not marked in the figure) between the fourth pump chamber 14Z and the fifth pump chamber 15Z, and at the connection point where the rotating shaft passes through the third pump chamber 13Z and the fourth pump chamber 14Z to prevent leakage of hydraulic oil between different pump chambers.

[0046] like Figure 17-20 As shown, the driving assembly includes a driving rod 111, a first guide rod 112 is arranged on one side of the driving rod 111, a first fixing plate 12 and a second fixing plate 13 are arranged on both sides of the base 1, the first fixing plate 12 is provided with a notch 121, a universal joint 1211 is sleeved on the notch 121, the universal joint 1211 is slidably connected with the first guide rod 112, the driving rod 111 and the first guide rod 112 are arranged on the sliding plate 11, the first guide rod 112 is located on one side of the driving rod 111, and a first fixing plate 12 is arranged on one side of the base 1, the first fixing plate 12 is sleeved with a universal joint Part 1211, the universal joint part 1211 is slidably connected with the first guide rod 112, so that when the driving rod 111 drives the sliding plate 11 to move, the first guide rod 112 can move along the universal joint part 1211, and the universal joint part 1211 allows the first guide rod 112 to be adjusted in multiple directions, thereby providing a buffer for the first guide rod 112 when it moves, and even in the event of external impact or vibration, the first guide rod 112 can maintain smooth movement. The universal joint part 1211 is slidably connected with the first guide rod 112, so that the relative position between the sliding plate 11 and the base 1 can be maintained.

[0047] A third fixing plate 14 is connected between the first fixing plate 12 and the second fixing plate 13. The third fixing plate 14 is provided with a fixing seat 142 and a guide sleeve 141. The fixing seat 142 is connected to the output shaft 1111 of the driving rod 111. A second guide rod 113 is provided on the other side of the driving rod 111. The second guide rod 113 is slidably connected to the guide sleeve 141. The third fixing plate 14 is fixedly provided between the first fixing plate 12 and the second fixing plate 13. The guide sleeve 141 and the fixing seat 142 are fixedly provided on the third fixing plate 14. A second guide rod 113 is provided on the other side of the movable rod 111. The second guide rod 113 and the guide sleeve 141 are slidably connected. The output shaft 1111 of the driving rod 111 is connected to the fixed seat 142. When the output shaft 1111 of the driving rod 111 drives the sliding plate 11 to move, the second guide rod 113 can move along the guide sleeve 141 to provide guidance for the movement of the sliding plate 11, so that the movement of the sliding plate 11 will not deviate from the predetermined trajectory. The second guide rod 113 is slidably connected to the guide sleeve 141, so as to maintain the relative position of the sliding plate 11 and the base 1.

[0048] The output shaft 1111 of the driving rod 111 can be extended and retracted in the vertical direction. One end of the output shaft 1111 of the driving rod 111 is connected to the fixed seat 142. When the output shaft 1111 of the driving rod 111 drives the sliding plate 11 to move, the fixed seat 142 bears the gravity on the sliding plate 11, and the driving rod 111 moves away from one end of the output shaft 1111, thereby driving the sliding plate 11 to move.

[0049] like Figure 5-8As shown, the horizontal adjustment mechanism includes a fixed sleeve and a third guide rod. The fixed sleeve is fixedly arranged on the upper side of the sliding plate 11, and the third guide rod is arranged on the movable plate 211. The third guide rod is slidably connected to the fixed sleeve and can slide in the fixed sleeve through the third guide rod, so that the movable plate 211 can move horizontally along the fixed sleeve relative to the sliding plate 11, and the movable plate 211 is connected to the armrest box 2, so that the armrest box 2 can move horizontally relative to the sliding plate 11, and the horizontal movement of the armrest box 2 with the sliding plate 11 can be completed by pushing the armrest box 2.

[0050] The horizontal adjustment mechanism also includes a limit assembly, which includes a limit rod 3 and a positioning plate 116. The positioning plate 116 is arranged on the sliding plate 11. The positioning plate 116 is provided with more than two positioning cavities 1161. The movable plate 211 is provided with an ear plate 2111. The limit rod 3 is hinged to the ear plate 2111. A limit block 31 is provided on one side of the limit rod 3 corresponding to the positioning plate 116. The limit block 31 is matched with the positioning cavity 1161. The positioning plate 116 is provided on one side of the sliding plate 11. The positioning plate 116 is provided with a plurality of positioning cavities 1161. A positioning cavity 1161 is provided, and an ear plate 2111 is connected to one side of the movable plate 211, and the ear plate 2111 is connected to a limiting plate, and a limiting block 31 is provided on the limiting plate. When the limiting rod 3 is moved to make the limiting block 31 away from the positioning cavity 1161, the movable plate 211 can be relatively displaced with the sliding plate 11, and when the limiting rod 3 is moved to make the limiting block 31 sleeved in the positioning cavity 1161, the movable plate 211 and the sliding plate 11 cannot be relatively displaced, thereby completing the limitation between the limiting plate and the sliding plate 11.

[0051] like Figure 25-28 As shown, a support platform 115 is provided on the sliding plate 11, and the support platform 115 abuts against the moving plate 211. The moving plate 211 is provided on the armrest box 2. The sliding plate 11 is provided with a support platform 115, and the support platform 115 and the moving plate 211 abut against each other to provide support for the armrest box 2.

[0052] The armrest box 2 includes an upper cover 22 and a lower cover 21. The lower cover 21 is provided with a front bottom plate 213, and the front bottom plate 213 is provided with an elastic member 212. The front bottom plate 213 is connected to the limit rod 3 through the elastic member 212. A through hole 221 is provided on one side of the upper cover 22, and the limit rod 3 is arranged to pass through the through hole 221, and is connected to the front bottom plate 213 on one side of the limit rod 3 through the elastic member 212. When the limit rod 3 is toggled, the elastic member 212 extends and deforms, and at this time the limit block 31 moves away from the positioning cavity 1161, and the movable plate 211 can be relatively displaced with the sliding plate 11. When the limit rod 3 is not subjected to external force, the elastic member 212 returns to its original state, driving the limit rod 3 to move, thereby making the limit block 31 sleeved in the positioning cavity 1161, and the movable plate 211 and the sliding plate 11 cannot be relatively displaced, and the through hole 221 is extended on one side of the gear lever, so that the limit rod 3 can be controlled from the outside of the armrest box 2.

[0053] A side panel of the lower cover 21 is a movable plate 211, and the upper cover 22 is fixedly connected to the lower cover 21. The lower cover 21 is provided with a movable plate 211, and an external force can be applied to the armrest box 2 to drive the movable plate 211 to move, which is easy to operate.

[0054] An armrest frame 23 is arranged on the upper side of the armrest box 2 to provide hand support for the driver.

[0055] The working principle of the present invention is as follows: a first fixing plate 12 and a second fixing plate 13 are respectively arranged on both sides of the base 1, a universal joint 1211 is arranged on the first fixing plate 12, a sliding plate 11 is arranged between the base 1 and the armrest box 2, a driving rod 111 is arranged on the sliding plate 11, a first guide rod 112 is arranged on one side of the driving rod 111, the first guide rod 112 is slidably connected with the universal joint 1211, and a third fixing plate 11 is fixedly arranged between the first fixing plate 12 and the second fixing plate 13 4. A guide sleeve 141 and a fixing seat 142 are fixedly arranged on the third fixing plate 14. A second guide rod 113 is arranged on the other side of the driving rod 111 on the sliding plate 11. The second guide rod 113 is slidably connected to the guide sleeve 141. The output shaft 1111 of the driving rod 111 is connected to the fixing seat 142. When the output shaft 1111 of the driving rod 111 drives the sliding plate 11 to move, the second guide rod 113 can move along the guide sleeve 141 to provide guidance for the movement of the sliding plate 11. The fixed sleeve is fixedly arranged on the upper side of the sliding plate 11, and the third guide rod is arranged on the movable plate 211. The third guide rod is slidably connected with the fixed sleeve, and can slide in the fixed sleeve through the third guide rod, so that the movable plate 211 can move horizontally relative to the sliding plate 11 along the fixed sleeve, and the movable plate 211 is connected to the armrest box 2, so that the armrest box 2 can move horizontally relative to the sliding plate 11, and the horizontal movement of the armrest box 2 with the sliding plate 11 can be completed by pushing the armrest box 2. The elastic member 212 is connected to the front bottom plate 2 on one side of the limit rod 3. 13, when the limit rod 3 is toggled, the elastic member 212 is extended and deformed, and the limit block 31 is away from the positioning cavity 1161, and the movable plate 211 can be relatively displaced with the sliding plate 11. When the limit rod 3 is not subjected to external force, the elastic member 212 returns to its original state, driving the limit rod 3 to move, so that the limit block 31 is sleeved in the positioning cavity 1161, and the movable plate 211 and the sliding plate 11 cannot be relatively displaced, and a through hole 221 is extended from one side of the gear lever, so that the limit rod 3 can be controlled from the outside of the armrest box 2; By connecting corresponding driving pipelines to different oil outlets, the driving device drives the rotating shaft to rotate, thereby driving the front gear assemblies corresponding to the first pump chamber 11Z, the second pump chamber 12Z and the third pump chamber 13Z and the rear gear assemblies corresponding to the fourth pump chamber 14Z and the fifth pump chamber 15Z to rotate simultaneously in the front pump chamber and the rear pump chamber respectively. By arranging the front gear assemblies corresponding to the first pump chamber 11Z, the second pump chamber 12Z and the third pump chamber 13Z in the front pump chamber, and arranging the rear gear assemblies corresponding to the fourth pump chamber 14Z and the fifth pump chamber 15Z in the rear pump chamber, in the process of the driving device driving the rotating shaft to rotate, the front gear assemblies and the rear gear assemblies on the rotating shaft can be driven to rotate simultaneously in the front pump chamber and the rear pump chamber respectively. This process can make the pump chamber 11Z, the second pump chamber 12Z and the third pump chamber 13Z rotate simultaneously. The hydraulic oil in the chamber 12Z and the third pump chamber 13Z, the fourth pump chamber 14Z and the fifth pump chamber 15Z simultaneously provide multiple different power sources to the outside, and the front pump chamber supplies hydraulic oil to the outside through the oil inlet and then from the two oil outlets, and the rear pump chamber supplies hydraulic oil to the outside through the two oil inlets and two oil outlets, thereby meeting the power output of the mechanism connected to the front pump chamber and the rear pump chamber in the bulldozer, thereby realizing the actual operation requirements of the bulldozer, and having good working reliability; the hydraulic oil can enter the rear pump chamber through the fourth oil inlet and the fifth oil inlet, thereby enabling the fourth pump chamber 14Z and the fifth pump chamber 15Z to be filled with hydraulic oil, and under the drive of the rear gear assembly, the fourth oil outlet connected to the fourth pump chamber and the fifth oil outlet connected to the fifth pump chamber can simultaneously output different pressures to the outside; Since the volume of the front pump chamber is set differently from that of the rear pump chamber, the hydraulic oil in the first pump chamber 11Z, the second pump chamber 12Z, the third pump chamber 13Z, the fourth pump chamber 14Z and the fifth pump chamber 15Z can simultaneously provide multiple different power sources to the outside, thereby meeting the power output of the mechanism connected to the front pump chamber and the rear pump chamber in the bulldozer, thereby realizing the actual operation needs of the bulldozer.

Claims

1. A bulldozer with a high drive structure, comprising a cab and a hydraulic transmission system, with walking mechanisms arranged on both sides below the cab and a driving mechanism arranged on one side of the cab, characterized in that: The hydraulic transmission system comprises a pump body and two parallel rotating shafts, a front pump chamber is provided inside the front end of the pump body, a rear pump chamber is provided inside the rear end of the pump body, and the rotating shaft passes through the front pump chamber and the rear pump chamber; an oil inlet is provided on one side of the front pump body, three pump chambers are provided in the front pump body, two pump chambers are provided in the rear pump body, and a first oil outlet, a second oil outlet, a fourth oil outlet and a fifth oil outlet are provided on one side surface of the rear pump body, the first oil outlet is connected to a pump chamber of the front pump body, the second oil outlet is connected to the two pump chambers of the front pump body, the fourth oil outlet and the fifth oil outlet are connected to the two pump chambers of the rear pump body respectively, and the first oil outlet and the second oil outlet are arranged to be inclined outward and upward along the axial direction of the pump body; A base and an armrest box are provided in the cab, a height adjustment mechanism is provided between the base and the armrest box, the height adjustment mechanism includes a sliding plate, the upper end of the sliding plate is fixedly connected to the armrest box, a driving assembly is provided on the base, the driving assembly is fixedly connected to the sliding plate and drives the sliding plate to move up and down, a moving plate is provided on the armrest box, a horizontal adjustment mechanism is provided between the moving plate and the sliding plate, the horizontal adjustment mechanism drives the moving plate and the sliding plate to be slidably connected, a limit assembly is provided between the moving plate and the sliding plate, the limit assembly is connected to the moving plate, the limit assembly is connected to the sliding plate in an opening and closing connection, and when the limit assembly is opened and connected to the sliding plate, the horizontal adjustment mechanism drives the moving plate to move horizontally on the sliding plate.

2. A bulldozer with a high drive structure according to claim 1, characterized in that: The walking mechanism includes two traveling tracks, and hydraulic push rods are arranged inside the two traveling tracks. Guide wheels and driving wheels are arranged at both ends of the hydraulic push rods, and the driving wheels and guide wheels are both connected to the traveling tracks in a transmission manner. A plurality of supporting rollers are arranged at the lower end of the hydraulic push rods, and the plurality of supporting rollers are both connected to the traveling tracks in a transmission manner.

3. A bulldozer with a high drive structure according to claim 2, characterized in that: A connecting seat is arranged between the two hydraulic push rods, the connecting seat is connected to the bulldozer bucket, a first mounting hole and a second mounting hole are arranged on the connecting seat, the two hydraulic push rods are connected through the first mounting hole, and the second mounting hole is connected to the output end of the first oil cylinder.

4. The bulldozer with a high drive structure according to claim 1, characterized in that: The driving mechanism includes an engine body, the engine body is provided with a first connecting pipe and a second connecting pipe, and a connecting plate is provided between the first connecting pipe and the second connecting pipe.

5. The bulldozer with a high drive structure according to claim 1, characterized in that: A first oil cylinder is arranged on one side of the driving mechanism, a bulldozer bucket is arranged at the output end of the first oil cylinder, a second oil cylinder is arranged on one side of the bulldozer bucket, a ripper is arranged on the other side of the cab, and a mounting hole is arranged on the bulldozer bucket.

6. The bulldozer with a high drive structure according to claim 1, characterized in that: The front pump chamber includes a first pump chamber, a second pump chamber and a third pump chamber, which are connected in series to form a whole, and the front pump chamber is respectively provided with front gear assemblies corresponding to the first pump chamber, the second pump chamber and the third pump chamber, and the rear pump chamber includes a fourth pump chamber and a fifth pump chamber, which are separated from the fifth pump chamber, and the rear pump chamber is respectively provided with rear gear assemblies corresponding to the fourth pump chamber and the fifth pump chamber, and the front gear assembly and the rear gear assembly are both fixedly sleeved on the rotating shaft, and one end of the rotating shaft is connected to the output end of the driving device, an oil inlet is provided on one side of the front pump chamber, and a first gear assembly is provided on the other side of the front pump chamber. An oil outlet and a second oil outlet, the first oil outlet is connected with the first pump chamber, the second oil outlet is connected with the second pump chamber and the third pump chamber respectively, the rear pump chamber is provided with a fourth oil inlet and a fifth oil inlet, a fourth oil outlet and a fifth oil outlet, the fourth oil inlet is connected with the fourth pump chamber and the fourth oil outlet, the fifth oil inlet is connected with the fifth pump chamber and the fifth oil outlet; the first oil outlet and the second oil outlet are arranged on one side surface of the rear pump chamber, the front side wall of the front pump chamber is provided with a first through cavity and a second through cavity, the first through cavity is connected with the first pump chamber and the first oil outlet, the second through cavity is connected with the second pump chamber and the second oil outlet.

7. The bulldozer with a high drive structure according to claim 1, characterized in that: A fourth oil outlet and a fifth oil outlet are provided on one side of the rear pump chamber, and a fourth oil inlet and a fifth oil inlet are provided on the other side of the rear pump chamber. The fourth oil outlet and the fourth oil inlet are both connected to the fourth pump chamber, and the fifth oil outlet and the fifth oil inlet are both connected to the fifth pump chamber.

8. The bulldozer with a high drive structure according to claim 1, characterized in that: The front gear assembly includes a first gear assembly, a second gear assembly and a third gear assembly, the first gear assembly is arranged in the first pump chamber, the second gear assembly is arranged in the second pump chamber, and the third gear assembly is arranged in the third pump chamber; the rear gear assembly includes a fourth gear assembly and a fifth gear assembly, the fourth gear assembly is arranged in the fourth pump chamber, and the fifth gear assembly is arranged in the fifth pump chamber.

9. The bulldozer with a high drive structure according to claim 8, characterized in that: The first gear assembly includes two first-one gears, the two first-one gears are fixedly sleeved on the two rotating shafts, and the two first-one gears are externally meshed. The second gear assembly includes two second-two gears, the two second-two gears are fixedly sleeved on the two rotating shafts, and the two second-two gears are externally meshed. The third gear assembly includes two third-three gears, the two third-three gears are fixedly sleeved on the two rotating shafts, and the two third-three gears are externally meshed. A gap is provided between the first-one gear, the second-two gear and the third-three gear on the same rotating shaft.

10. The bulldozer with a high drive structure according to claim 1, characterized in that: The driving mechanism comprises a first guide rod and a second guide rod, wherein the first guide rod and the second guide rod are fixedly connected to the sliding plate, and the first and second guide rods are fixedly connected to the sliding plate. The first and second guide rods are respectively provided on both sides of the base, and the first and second guide rods are provided with a notch, and the notch is sleeved with a universal joint, and the universal joint is slidably connected to the first guide rod. The horizontal adjustment mechanism comprises a fixed sleeve and a third guide rod, and the fixed sleeve is fixedly arranged on the upper side of the sliding plate, and the third guide rod is arranged on the movable plate, and the third guide rod is slidably connected to the fixed sleeve. The limit assembly comprises a limit rod and a positioning plate, and the positioning plate is arranged on the sliding plate, and more than two positioning cavities are arranged on the positioning plate, and an ear plate is arranged on the movable plate, and the limit rod is hinged with the ear plate, and a limit block is arranged on one side of the limit rod corresponding to the positioning plate, and the limit block is matched with the positioning cavity.

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