Cooling fan driving device of double-section crawler

Abstract

The invention belongs to the technical field of engineering machinery, and discloses a cooling fan driving device of a two-section crawler, which is technically characterized by comprising a bearing plate, a first rotating column rotatably mounted on the surface of the bearing plate, a main belt pulley fixedly mounted at the bottom end of the first rotating column, and a second rotating column rotatably mounted on the surface of the bearing plate, a driving belt pulley is fixedly mounted on the surface of the first rotating column, a driven belt pulley is fixedly mounted on the surface of the second rotating column, the driving belt pulley and the driven belt pulley are jointly connected with a belt, and protection mechanisms are arranged on the surfaces of the first rotating column and the second rotating column correspondingly and comprise blades, first positioning assemblies and cutting assemblies; a bearing block is slidably mounted on the bottom wall of the bearing plate, a cleaning mechanism is arranged on the side wall of the bearing block and comprises a brush, a second positioning assembly and a driving assembly, and the problem that a fan cannot normally run for heat dissipation due to the fact that an existing fan rotating shaft is low in rotating efficiency is solved.

Description

Technical Field

[0001] The invention relates to the technical field of engineering machinery, in particular to a cooling fan driving device of a double-section crawler vehicle. Background Art

[0002] At present, the driving modes of cooling fans of domestic double-section tracked vehicles are mainly engine direct drive and hydraulic pump-motor drive.

[0003] When in use, the rotating shaft drives the fan to rotate for heat dissipation. Since the working environment of the crawler vehicle is relatively complex and harsh, external debris such as grass, ropes, and nets are easy to rotate and entangle on the rotating shaft of the fan, affecting the normal rotation of the rotating shaft, and thus causing the fan to be unable to operate normally for heat dissipation. In addition, when the belt is transmitting the fan, the surface of the belt is also prone to dirt and other debris, resulting in reduced transmission efficiency of the belt. Summary of the invention

[0004] The object of the present invention is to provide a cooling fan driving device for a double-section crawler vehicle to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: The transmission mechanism that this second transmission mechanism is used for the transmission mechanism is that the transmission mechanism of this second transmission mechanism is made up of the rotation axis of the transmission element and the rotation axis of the transmission element. The cutting assembly is located inside the first rotating column and the second rotating column and is connected to the first positioning assembly. The cutting assembly controls the intermittent movement of the blade and the like toward the outside of the first rotating column and the second rotating column by cooperating with the first positioning assembly. A bearing block is slidably installed on the bottom wall of the bearing plate. A belt tensioning assembly is provided on the surface of the bearing block. The belt tensioning assembly is used to adjust the tightness of the belt. A cleaning mechanism cooperating with the belt is provided on the side wall of the bearing block. The cleaning mechanism includes a brush, a second positioning assembly and a driving assembly. The brush is provided in multiple groups. The second positioning assembly is located on the side wall of the bearing block and is connected to the brush. The second positioning assembly is used to control multiple groups of brushes to be located on both sides of the belt respectively. The driving assembly is connected to the second positioning assembly. The driving assembly controls the brush to rotate on the outside of the belt by cooperating with the second positioning assembly.

[0006] As a further solution of the present invention: the first positioning assembly includes a plurality of groups of vertical grooves distributed in an annular shape, respectively opened on the surfaces of the first rotating column and the second rotating column, and telescopic grooves are respectively opened on the opposite side walls of the vertical grooves, a sliding block is slidably installed in the telescopic groove, an extrusion spring is fixedly installed in the telescopic groove, the telescopic end of the extrusion spring is connected to the sliding block, a plurality of groups of sliding blocks extend into the vertical grooves and are commonly fixedly connected to a vertical plate, and the blade is fixedly installed on the surface of the vertical plate.

[0007] As a further solution of the present invention: the cutting assembly includes a first rotating column and an annular opening on the surface of the second rotating column, a rotating shaft is rotatably installed in the vertical groove, a cam that cooperates with the vertical plate is fixedly installed on the surface of the rotating shaft, the top end of the rotating shaft extends into the opening and is fixedly installed with a control gear disk, two groups of fixing rings are fixedly installed on the bottom wall of the supporting plate, the two groups of fixing rings are respectively sleeved on the outside of the first rotating column and the second rotating column, an annular gear ring is fixedly installed on the inner side wall of the fixing ring, and the gear ring is meshed and connected with the control gear disk.

[0008] As a further solution of the present invention: the belt tensioning assembly includes two groups of baffles fixedly installed on the bottom wall of the bearing plate, which are respectively located on both sides of the bearing block, and a threaded rod is rotatably installed between the two groups of baffles. The threaded rod is threadedly connected to the bearing block, one end of the threaded rod extends to the outside of the baffle and is connected to a motor, and a transmission column is rotatably installed on the bottom wall of the bearing block, and a tensioning wheel that cooperates with the belt is fixedly installed on the bottom end of the transmission column.

[0009] As a further solution of the present invention: the second positioning assembly includes a horizontal plate rotatably installed on the side wall of the supporting block, the horizontal plate is located above the belt, and multiple groups of vertical poles are rotatably installed on the bottom wall of the horizontal plate. The multiple groups of vertical poles are respectively located on both sides of the belt, and multiple groups of brushes are evenly distributed on the surface of the vertical poles.

[0010] As a further solution of the present invention: the driving assembly includes multiple groups of synchronous toothed discs fixedly installed on the surfaces of the vertical poles, the multiple groups of synchronous toothed discs on the same side of the belt are commonly connected to the synchronous belts, the two groups of vertical poles close to the transmission column and the surfaces of the transmission column are respectively fixedly installed with synchronous discs, and the multiple groups of synchronous discs are commonly connected to the synchronous belts.

[0011] As a further solution of the present invention: two groups of guide rods are rotatably mounted on the bottom wall of the horizontal plate, the two groups of guide rods are respectively located on both sides of the belt, and the surfaces of the guide rods are provided with guide wheels that cooperate with the belt.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: by setting the first positioning component and the cutting component to cooperate with each other, the blade can be conveniently controlled to move outside the first rotating column and the second rotating column, and then the grass, rope, net and other debris wrapped around the surface of the first rotating column and the second rotating column can be cut off, effectively improving the transmission efficiency of the first rotating column and the second rotating column; by setting the second positioning component and the driving component to cooperate with each other, the brush can be controlled to clean the mud and other debris attached to the belt surface, effectively improving the transmission efficiency of the belt. The problem that the fan rotating shaft has low rotation efficiency, resulting in the fan being unable to operate normally and dissipate heat, is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of a cooling fan driving device of a double-section tracked vehicle provided in an embodiment of the present invention.

[0014] Figure 2 It is a schematic diagram of the front structural view of a cooling fan driving device of a double-section tracked vehicle provided in an embodiment of the present invention.

[0015] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of A.

[0016] Figure 4 for Figure 2 Schematic diagram of the enlarged structure of B.

[0017] Figure 5 The present invention is a schematic diagram of a first rotating column and its connection structure in a cooling fan driving device of a double-section crawler vehicle provided in an embodiment of the present invention.

[0018] Figure 6 for Figure 5 Schematic diagram of the enlarged structure of C in the figure.

[0019] Figure 7 The present invention is a schematic diagram of a cutting blade and its connection structure in a cooling fan driving device of a double-section crawler vehicle provided in an embodiment of the present invention.

[0020] Figure 8 The present invention is a schematic diagram of a bearing block and its connection structure in a cooling fan driving device of a double-section crawler vehicle provided in an embodiment of the present invention.

[0021] Among them: 1-bearing plate, 2-first rotating column, 21-main pulley, 3-second rotating column, 31-slave pulley, 32-fan blade, 4-belt, 5-protection mechanism, 51-blade, 52-first positioning assembly, 521-vertical slot, 522-telescopic slot, 523-sliding block, 524-extrusion spring, 525-vertical plate, 53-cutting assembly, 531-opening, 532-rotating shaft, 533-cam, 534-control gear disc, 5 35-fixing ring, 536-gear ring, 6-bearing block, 7-belt tensioning assembly, 71-baffle, 72-threaded rod, 73-motor, 74-transmission column, 75-tensioning wheel, 8-cleaning mechanism, 81-brush, 82-second positioning assembly, 821-cross plate, 822-vertical rod, 83-drive assembly, 831-synchronous disk, 832-synchronous belt, 833-synchronous toothed disk, 834-synchronous toothed belt, 9-guide rod, 10-guide wheel. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0023] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0024] like Figure 1 , Figure 2 , Figure 4 , Figure 6As shown, it is a structural diagram of a cooling fan driving device of a double-section crawler vehicle provided by an embodiment of the present invention, comprising a bearing plate 1, the bearing plate 1 is installed in the crawler vehicle, a first rotating column 2 is rotatably installed on the surface of the bearing plate 1, a main pulley 21 is fixedly installed at the bottom end of the first rotating column 2, the top of the first rotating column 2 is connected to the output end of the crawler vehicle engine, a second rotating column 3 is rotatably installed on the surface of the bearing plate 1, a slave pulley 31 is fixedly installed on the surface of the second rotating column 3, a fan blade 32 is arranged at the bottom end of the second rotating column 3, the main pulley 21 and the slave pulley 31 are jointly connected with a belt 4, and protective mechanisms 5 are respectively arranged on the surfaces of the first rotating column 2 and the second rotating column 3, the protective mechanism 5 includes a blade 51, a first positioning assembly 52 and a cutting assembly 53, the blade 51 is provided with multiple groups, the first positioning assembly 52 is located on the surfaces of the first rotating column 2 and the second rotating column 3 and is connected to the blade 51, the first positioning assembly 52 is used to control the multiple groups of blades 51 to be vertically around the first rotating column 2 and the second rotating column 3. On the surface of the second rotating column 3, the cutting component 53 is located in the first rotating column 2 and the second rotating column 3 and is connected to the first positioning component 52. The cutting component 53 controls the blade 51 and the like to intermittently move toward the outside of the first rotating column 2 and the second rotating column 3 by cooperating with the first positioning component 52. The bottom wall of the bearing plate 1 is slidably installed with a bearing block 6. The surface of the bearing block 6 is provided with a belt tensioning component 7. The belt tensioning component 7 is used to adjust the tightness of the belt 4. The side wall of the bearing block 6 is provided with a cleaning mechanism 8 that cooperates with the belt 4. The cleaning mechanism 8 includes a brush 81, a second positioning component 82 and a driving component 83. The brush 81 is provided with multiple groups. The second positioning component 82 is located on the side wall of the bearing block 6 and is connected to the brush 81. The second positioning component 82 is used to control multiple groups of brushes 81 to be located on both sides of the belt 4 respectively. The driving component 83 is connected to the second positioning component 82. The driving component 83 controls the brush 81 to rotate on the outside of the belt 4 by cooperating with the second positioning component 82.

[0025] When in use, the output end of the crawler vehicle engine drives the first rotating column 2 to rotate and then drives the main pulley 21 to rotate. The main pulley 21 cooperates with the belt 4 to drive the slave pulley 31 to rotate and then drives the second rotating column 3 to rotate. The second rotating column 3 drives the fan blades 32 to rotate and then dissipate heat for the crawler vehicle. External grass, ropes, nets and other debris are wrapped around the surfaces of the first rotating column 2 and the second rotating column 3. When the first rotating column 2 and the second rotating column 3 rotate, the cutting assembly 53 cooperates with the first positioning assembly 52 to control the blade 51 to intermittently move toward the outside of the first rotating column 2 and the second rotating column 3. The blade 51 can automatically cut off the grass, ropes, nets and other debris wrapped around the outside of the first rotating column 2 and the second rotating column 3, effectively improving the transmission efficiency of the first rotating column 2 and the second rotating column 3. When the belt 4 is rotating, the belt tensioning assembly 7 can adjust the rotation trajectory of the belt 4 and thus adjust the tension of the belt 4. The driving assembly 83 cooperates with the second positioning assembly 82 to control multiple groups of brushes 81 to rotate on both sides of the belt 4. The brushes 81 can clean impurities such as sludge attached to the surface of the belt 4, thereby effectively improving the transmission efficiency between the main pulley 21, the slave pulley 31 and the belt 4.

[0026] like Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, as a preferred embodiment of the present invention, the first positioning component 52 includes a plurality of groups of annularly distributed vertical grooves 521 respectively opened on the surfaces of the first rotating column 2 and the second rotating column 3, and the opposite side walls of the vertical groove 521 are respectively opened with telescopic grooves 522, and a sliding block 523 is slidably installed in the telescopic groove 522, and an extrusion spring 524 is fixedly installed in the telescopic groove 522, and the telescopic end of the extrusion spring 524 is connected to the sliding block 523, and multiple groups of sliding blocks 523 extend into the vertical groove 521 and are commonly fixedly connected with a vertical plate 525, and the blade 51 is fixedly installed on the surface of the vertical plate 525.

[0027] A plurality of groups of sliding blocks 523 support and position the vertical plates 525, and the vertical plates 525 are located in the vertical grooves 521. The vertical plates 525 support and position the blades 51. The first rotating column 2 and the second rotating column 3 rotate, and the cutting assembly 53 applies a thrust to the vertical plates 525, so that the plurality of groups of vertical plates 525 move toward the outside of the first rotating column 2 and the second rotating column 3 respectively. The vertical plates 525 push the blades 51 to extend to the outside of the first rotating column 2 and the second rotating column 3. The blades 51 can automatically cut off the grass, ropes, nets and other debris wrapped around the surface of the first rotating column 2 and the second rotating column 3, reduce the resistance of the first rotating column 2 and the second rotating column 3 during rotation, and effectively improve the rotation efficiency of the first rotating column 2 and the second rotating column 3.

[0028] like Figure 1 , Figure 4 , Figure 5 , Figure 7 As shown, as a preferred embodiment of the present invention, the cutting assembly 53 includes an annular opening 531 opened on the surface of the first rotating column 2 and the second rotating column 3, a rotating shaft 532 is rotatably installed in the vertical groove 521, a cam 533 that cooperates with the vertical plate 525 is fixedly installed on the surface of the rotating shaft 532, the top of the rotating shaft 532 extends into the opening 531 and is fixedly installed with a control gear disk 534, two groups of fixing rings 535 are fixedly installed on the bottom wall of the supporting plate 1, the two groups of fixing rings 535 are respectively sleeved on the outside of the first rotating column 2 and the second rotating column 3, the inner wall of the fixing ring 535 is fixedly installed with an annular gear ring 536, and the gear ring 536 is meshed and connected with the control gear disk 634.

[0029] When the first rotating column 2 and the second rotating column 3 rotate, they drive the rotating shaft 532 to rotate synchronously, and the rotating shaft 532 drives the control gear plate 534 to rotate synchronously. The control gear plate 534 rolls along the surface of the gear ring 536 when rotating, and the control gear plate 534 drives the rotating shaft 532 to rotate when rotating. The rotating shaft 532 drives the cam 533 to rotate in the vertical groove 521. When rotating, the cam 533 applies thrust to the vertical plate 525, thereby pushing the vertical plate 525 and the blade 51 to move toward the outside of the first rotating column 2 and the second rotating column 3.

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 8 As shown, as a preferred embodiment of the present invention, the belt tensioning assembly 7 includes two groups of baffles 71 fixedly installed on the bottom wall of the supporting plate 1 and respectively located on both sides of the supporting block 6, a threaded rod 72 is rotatably installed between the two groups of baffles 71, the threaded rod 72 is threadedly connected to the supporting block 6, one end of the threaded rod 72 extends to the outside of the baffle 71 and is connected to a motor 73, a transmission column 74 is rotatably installed on the bottom wall of the supporting block 6, and a tensioning wheel 75 that cooperates with the belt 4 is fixedly installed at the bottom end of the transmission column 74.

[0031] The belt 4 passes through the surface of the tensioning wheel 75. When in use, the motor 73 drives the threaded rod 72 to rotate and then pushes the supporting block 6 to slide on the bottom wall of the supporting plate 1. The supporting block 6 cooperates with the transmission column 74 to push the tensioning wheel 75 to move synchronously. The tensioning wheel 75 can conveniently adjust the tension of the belt 4 when moving, thereby improving the transmission efficiency of the belt 4.

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 8As shown, as a preferred embodiment of the present invention, the second positioning assembly 82 includes a horizontal plate 821 rotatably mounted on the side wall of the supporting block 6, the horizontal plate 821 is located above the belt 4, and a plurality of groups of vertical rods 822 are rotatably mounted on the bottom wall of the horizontal plate 821, the plurality of groups of vertical rods 822 are respectively located on both sides of the belt 4, and a plurality of groups of brushes 81 are evenly distributed on the surface of the vertical rods 822.

[0033] When the belt 4 changes its moving trajectory to adjust the tension, multiple sets of vertical rods 822 and brushes 81 are always on both sides of the belt 4. When the belt 4 moves, the driving assembly 83 controls the vertical rods 822 to rotate at the bottom wall of the cross plate 821, and the vertical rods 822 drive the brushes 81 to rotate synchronously. The brushes 81 can clean the sludge and other debris attached to the surface of the belt 4 in all directions.

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 8 As shown, as a preferred embodiment of the present invention, the driving assembly 83 includes multiple groups of synchronous toothed discs 833 respectively fixedly installed on the surfaces of the vertical rods 822, the multiple groups of synchronous toothed discs 833 on the same side of the belt 4 are commonly connected with a synchronous toothed belt 834, the two groups of vertical rods 822 close to the transmission column 74 and the surfaces of the transmission column 74 are respectively fixedly installed with synchronous discs 831, and the multiple groups of synchronous discs 831 are commonly connected with a synchronous belt 832.

[0035] When the belt 4 moves, it drives the tensioning wheel 75 to rotate, and the tensioning wheel 75 drives the transmission column 74 to rotate and then drives the synchronous disk 831 to rotate. Multiple sets of synchronous disks 831 cooperate with the synchronous belts 832 to drive the two sets of vertical rods 822 to rotate and then drive the synchronous toothed disk 833 to rotate. Multiple sets of synchronous toothed disks 833 cooperate with the synchronous toothed belts 834 to drive multiple sets of vertical rods 822 to rotate synchronously.

[0036] like Figure 1 , Figure 3 , Figure 8 As shown, as a preferred embodiment of the present invention, two groups of guide rods 9 are rotatably installed on the bottom wall of the horizontal plate 821, and the two groups of guide rods 9 are respectively located on both sides of the belt 4. The surface of the guide rod 9 is provided with a guide wheel 10 that cooperates with the belt 4.

[0037] The working principle of the present invention is as follows: when in use, the output end of the crawler vehicle engine drives the first rotating column 2 to rotate and then drives the main pulley 21 to rotate, the main pulley 21 cooperates with the belt 4 to drive the slave pulley 31 to rotate and then drives the second rotating column 3 to rotate, the second rotating column 3 drives the fan blade 32 to rotate and then dissipates heat for the crawler vehicle, external grass, ropes, nets and other debris are wrapped around the surfaces of the first rotating column 2 and the second rotating column 3, and the first rotating column 2 and the second rotating column 3 rotate, and the rotating shaft 532 drives the control gear plate 534 to rotate synchronously, and the control gear plate 534 rolls along the surface of the gear ring 536 when rotating, and the control gear plate 534 drives the rotating shaft 532 to rotate when rotating, and the rotating shaft 532 drives the cam 533 to rotate in the vertical groove 521, and the cam 533 applies thrust to the vertical plate 525 when rotating, thereby pushing the vertical plate 525 and the blade 51 to move toward the outside of the first rotating column 2 and the second rotating column 3. The vertical plate 525 pushes the blade 51 to extend to the outside of the first rotating column 2 and the second rotating column 3. The blade 51 can automatically cut off the grass, ropes, nets and other debris wrapped around the surface of the first rotating column 2 and the second rotating column 3, thereby reducing the resistance during the rotation of the first rotating column 2 and the second rotating column 3, and effectively improving the rotation efficiency of the first rotating column 2 and the second rotating column 3.

[0038] When the belt 4 moves, the tension wheel 75 is driven to rotate, and the tension wheel 75 drives the transmission column 74 to rotate and then drives the synchronous disk 831 to rotate. The multiple sets of synchronous disks 831 cooperate with the synchronous belt 832 to drive the two sets of vertical rods 822 to rotate and then drive the synchronous toothed disk 833 to rotate. The multiple sets of synchronous toothed disks 833 cooperate with the synchronous toothed belt 834 to drive the multiple sets of vertical rods 822 to rotate synchronously. The vertical rod 822 drives the brush 81 to rotate synchronously, and the brush 81 can clean the impurities such as mud attached to the surface of the belt 4, thereby effectively improving the transmission efficiency between the main pulley 21, the slave pulley 31 and the belt 4.

[0039] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A cooling fan driving device for a double-section crawler vehicle, comprising a bearing plate, the bearing plate is installed in the crawler vehicle, a first rotating column is rotatably installed on the surface of the bearing plate, a main pulley is fixedly installed on the bottom end of the first rotating column, the top end of the first rotating column is connected to the output end of the crawler vehicle engine, a second rotating column is rotatably installed on the surface of the bearing plate, a slave pulley is fixedly installed on the surface of the second rotating column, a fan blade is arranged at the bottom end of the second rotating column, the main pulley and the slave pulley are connected together by a belt, characterized in that: The surfaces of the first rotating column and the second rotating column are respectively provided with protective mechanisms, and the protective mechanisms include blades, a first positioning component and a cutting component. The blades are provided with multiple groups, and the first positioning component is located on the surfaces of the first rotating column and the second rotating column and is connected to the blades. The first positioning component is used to control the multiple groups of blades to vertically surround the surfaces of the first rotating column and the second rotating column. The cutting component is located in the first rotating column and the second rotating column and is connected to the first positioning component. The cutting component controls the blades to intermittently move toward the outside of the first rotating column and the second rotating column by cooperating with the first positioning component. Movement, a bearing block is slidably installed on the bottom wall of the bearing plate, a belt tensioning assembly is arranged on the surface of the bearing block, the belt tensioning assembly is used to adjust the tightness of the belt, the side wall of the bearing block is provided with a cleaning mechanism that cooperates with the belt, the cleaning mechanism includes a brush, a second positioning assembly and a driving assembly, the brush is provided with multiple groups, the second positioning assembly is located on the side wall of the bearing block and is connected to the brush, the second positioning assembly is used to control multiple groups of brushes to be located on both sides of the belt respectively, the driving assembly is connected to the second positioning assembly, and the driving assembly controls the brush to rotate on the outside of the belt by cooperating with the second positioning assembly.

2. The cooling fan driving device of a double-section crawler vehicle according to claim 1, characterized in that: The first positioning assembly includes a plurality of groups of annularly distributed vertical grooves respectively opened on the surfaces of the first rotating column and the second rotating column, and telescopic grooves are respectively opened on the opposite side walls of the vertical grooves, and a sliding block is slidably installed in the telescopic groove, and an extrusion spring is fixedly installed in the telescopic groove, and the telescopic end of the extrusion spring is connected to the sliding block, and multiple groups of sliding blocks extend into the vertical grooves and are fixedly connected to a vertical plate together, and the blade is fixedly installed on the surface of the vertical plate.

3. The cooling fan driving device of a double-section crawler vehicle according to claim 2, characterized in that: The cutting assembly includes a first rotating column and an annular opening on the surface of the second rotating column, a rotating shaft is rotatably installed in the vertical groove, a cam that cooperates with the vertical plate is fixedly installed on the surface of the rotating shaft, the top end of the rotating shaft extends into the opening and a control gear disk is fixedly installed, two groups of fixing rings are fixedly installed on the bottom wall of the bearing plate, the two groups of fixing rings are respectively sleeved on the outside of the first rotating column and the second rotating column, an annular gear ring is fixedly installed on the inner side wall of the fixing ring, and the gear ring is meshed with the control gear disk.

4. The cooling fan driving device of a double-section crawler vehicle according to claim 1, characterized in that: The belt tensioning assembly includes two groups of baffles fixedly installed on the bottom wall of the bearing plate and respectively located on both sides of the bearing block, a threaded rod is rotatably installed between the two groups of baffles, the threaded rod is threadedly connected to the bearing block, one end of the threaded rod extends to the outside of the baffle and is connected to a motor, a transmission column is rotatably installed on the bottom wall of the bearing block, and a tensioning wheel that cooperates with the belt is fixedly installed on the bottom end of the transmission column.

5. The cooling fan driving device of a double-section crawler vehicle according to claim 4, characterized in that: The second positioning assembly includes a horizontal plate rotatably mounted on the side wall of the bearing block, the horizontal plate is located above the belt, and a plurality of groups of vertical poles are rotatably mounted on the bottom wall of the horizontal plate. The plurality of groups of vertical poles are respectively located on both sides of the belt, and a plurality of groups of brushes are evenly distributed on the surface of the vertical poles.

6. The cooling fan driving device of a double-section crawler vehicle according to claim 5, characterized in that: The driving assembly includes multiple groups of synchronous toothed discs fixedly installed on the surfaces of the vertical poles, multiple groups of synchronous toothed discs on the same side of the belt are commonly connected to the synchronous belt, two groups of vertical poles close to the transmission column and the surfaces of the transmission column are respectively fixedly installed with synchronous discs, and multiple groups of synchronous discs are commonly connected to the synchronous belt.

7. The cooling fan driving device of a double-section crawler vehicle according to claim 5, characterized in that: Two groups of guide rods are rotatably mounted on the bottom wall of the transverse plate. The two groups of guide rods are respectively located on both sides of the belt. Guide wheels that cooperate with the belt are arranged on the surface of the guide rods.

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