Miniature mining explosion-proof remote-control diesel crawler tractor

Abstract

The invention discloses a miniature mining anti-explosion remote-control diesel crawler tractor, and relates to the technical field of crawler tractors. Comprising two chassis supports, a connecting fixing rod is fixedly installed between the two chassis supports, an adjusting assembly is arranged on the chassis supports, and an upper front crawler wheel, a lower front crawler wheel, an upper rear crawler wheel and a lower rear crawler wheel are arranged on the adjusting assembly; crawler chains are movably mounted on the upper front crawler wheels, the lower front crawler wheels, the upper rear crawler wheels and the lower rear crawler wheels; a placing plate is slidably installed between the two chassis supports, an explosion-proof box is fixedly installed on the placing plate, and the interior of the explosion-proof box is used for installing electrical control equipment. Through cooperative use of the adjusting assemblies, the stability, adaptability and traction force of the crawler tractor in a complex environment are improved, the service life of equipment is prolonged, and the working efficiency and performance of the crawler tractor are remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of crawler tractors, in particular to a miniature mining explosion-proof remote-controlled diesel crawler tractor. Background Art

[0002] The miniature mining explosion-proof remote-controlled diesel crawler tractor is a device specially designed for traction operations in dangerous environments such as mines. It combines miniature design, explosion-proof function, diesel power and remote control technology, and can perform traction work efficiently and safely under complex and dangerous working conditions.

[0003] At present, due to the uneven contact between the track chain and the ground, the traction force of some parts of the crawler tractor will be concentrated in a small area, while other parts may lose contact, resulting in poor traction effect, especially on soft or muddy ground. This uneven contact makes it easy for the vehicle to get stuck and unable to move forward smoothly. In addition, in the existing crawler tractors, the track chain and the load-bearing wheel cannot be effectively adjusted, and real-time adjustments cannot be made according to different ground conditions. Especially on uneven or soft ground, the track chain is prone to lose stability, thereby affecting the driving ability and safety of the tractor. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a miniature mining explosion-proof remote-controlled diesel crawler tractor, which solves the problems mentioned in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A miniature explosion-proof remote-controlled diesel crawler tractor for mining comprises two chassis brackets, a connecting rod is fixedly installed between the two chassis brackets, an adjustment component is arranged on the chassis bracket, an upper front crawler wheel, a lower front crawler wheel, an upper rear crawler wheel and a lower rear crawler wheel are arranged on the adjustment component, and a crawler chain is movably installed on the upper front crawler wheel, the lower front crawler wheel, the upper rear crawler wheel and the lower rear crawler wheel; A placement plate is slidably installed between the two chassis brackets, an explosion-proof box is fixedly installed on the placement plate, and the interior of the explosion-proof box is used to install electrical control equipment; A mounting slot is provided inside the chassis bracket, a driving wheel and an adjustment assembly are arranged inside the mounting slot, a plurality of load-bearing wheels are arranged on the adjustment assembly, and the load-bearing wheels are in sliding contact with the crawler chain.

[0006] Preferably, the adjustment assembly includes a U-shaped frame plate fixedly mounted on the chassis bracket, a hydraulic cylinder is fixedly mounted on the U-shaped frame plate, a square frame plate is fixedly mounted on the output rod of the hydraulic cylinder, a lifting rod is fixedly mounted on the square frame plate, both ends of the lifting rod are provided with rotation grooves, the inner side surface of the installation through groove is provided with a vertical groove in the vertical direction and a horizontal groove in the horizontal direction, the number of the vertical grooves and the horizontal grooves is two, and they are arranged symmetrically, and the placement plate is fixedly mounted on the square frame plate.

[0007] Preferably, vertical blocks are slidably installed inside the two vertical slots, and the first rotating shaft is rotatably installed on the two vertical blocks. Horizontal blocks are slidably installed inside the two horizontal slots, and the second rotating shaft is rotatably installed on the two horizontal blocks. A connecting rotating rod is rotatably installed on the second rotating shaft, and a symmetrically arranged connecting frame is fixedly installed on the lower end surface of the lifting rod.

[0008] Preferably, the upper front track wheel and the upper rear track wheel are respectively fixedly mounted on the two first rotating shafts, and the positions of the upper front track wheel and the upper rear track wheel are respectively located inside the two rotating grooves, the lower front track wheel and the lower rear track wheel are respectively fixedly mounted on the second rotating shaft, and the lower front track wheel and the lower rear track wheel are respectively located inside the connecting rotating rod, and the end of the connecting rotating rod away from the second rotating shaft is rotatably connected to the connecting frame.

[0009] Preferably, the two horizontal grooves are fixedly installed with limiting slide bars, the two limiting slide bars are slidably installed with adjustment blocks, an adjustment plate is fixedly installed between the two adjustment blocks, a first bearing is fixedly installed on the adjustment plate, an adjustment screw is fixedly installed on the first bearing, a spring is fixedly installed on the adjustment block, and a bracket plate is fixedly installed inside the mounting groove.

[0010] Preferably, the horizontal block is slidably mounted on the limiting slide rod, one end of the spring away from the adjustment block is fixedly connected to the horizontal block, one end of the adjustment screw away from the first bearing passes through the bracket plate and is fixedly mounted with an adjustment handle.

[0011] Preferably, the adjustment assembly includes a vertical tooth plate fixedly mounted on the lifting rod, a symmetrically arranged fixing plate is fixedly mounted on the inner side of the mounting groove, a driving rod is rotatably mounted between the two fixing plates, two groups of screw threads are opened on the driving rod, and sliding brackets are fixedly mounted on the two groups of screw threads.

[0012] Preferably, a second bearing is fixedly mounted on the sliding bracket, a connecting shaft is fixedly mounted on the second bearing, a driven gear is fixedly mounted on the driving rod and on one side of the screw thread, and a sliding groove is provided on the inner side of the mounting through groove.

[0013] Preferably, the vertical tooth plate is located on the outside of the driven gear and meshes with the driven gear, the load-bearing wheel is fixedly mounted on the connecting shaft and is located on the inner side of the sliding bracket, and the end of the connecting shaft extends to the inside of the sliding groove and is in sliding contact with the sliding groove.

[0014] The present invention provides a miniature explosion-proof remote-controlled diesel crawler tractor for mining. Compared with the prior art, it has the following beneficial effects: 1. The present invention drives the lifting rod to descend through the hydraulic cylinder, and the upper front track wheel and the upper rear track wheel on the lifting rod will be limited by the vertical block and the vertical groove and synchronously descend vertically. Then, by the cooperation of the connecting frame and the connecting rotating rod, the lower front track wheel and the lower rear track wheel on the connecting rotating rod will be cooperated with the horizontal block and the horizontal groove to move horizontally to both sides. When the positions of the upper front track wheel, the lower front track wheel, the upper rear track wheel and the lower rear track wheel change, the entire height of the crawler traction machine can be adjusted, and the contact area between the crawler chain and the ground is increased, thereby improving the stability and traction of the crawler vehicle on soft or uneven ground. 2. In the present invention, when the horizontal block moves in the horizontal groove through the limiting slide bar, the reaction force of the spring is used to ensure the stability of the horizontal block in the horizontal groove, thereby ensuring the stability of the lower front track wheel and the lower rear track wheel. At the same time, the elastic force of the spring can automatically adjust the slack of the track chain to ensure that the entire crawler traction machine maintains the best ground contact area and traction force; 3. In the present invention, when the elasticity of the spring cannot play a stabilizing effect, the adjusting handle is used to drive the adjusting screw to rotate, and the adjusting screw will make the adjusting block slide in the horizontal groove through the cooperation of the adjusting plate and the first bearing. By adjusting the position of the adjusting block, the elastic force of the spring can be effectively adjusted to ensure that the crawler tractor always maintains the best operating state; 4. In the present invention, when the lifting rod descends, the vertical tooth plate will be driven to descend. Through the cooperation between the vertical tooth plate and the driven gear, the driven gear will drive the driving rod to rotate. The driving rod will drive the load-bearing wheels on the sliding bracket to move outward through the limit of the screw thread and the sliding groove. By adjusting the distance between each load-bearing wheel, it can be ensured that when the crawler tractor is traveling on uneven ground, the appropriate distance between each load-bearing wheel is maintained to avoid stones or obstacles from causing excessive pressure on the crawler chain, thereby improving the balance and stability of the crawler tractor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the chassis bracket in the present invention; Figure 3 It is a schematic diagram of the structure of the placement plate in the present invention; Figure 4is a side sectional view of the chassis bracket of the present invention; Figure 5 It is a structural schematic diagram of the adjustment block in the present invention; Figure 6 It is a front cross-sectional view of the chassis bracket in the present invention; Figure 7 It is a structural schematic diagram of the regulating component in the present invention; Figure 8 It is a schematic diagram of the structure of the adjustment component in the present invention.

[0016] In the figure: 1, chassis bracket; 2, connecting rod; 3, upper front track wheel; 4, lower front track wheel; 5, upper rear track wheel; 6, lower rear track wheel; 7, track chain; 8, placement plate; 9, explosion-proof box; 10, installation slot; 11, load-bearing wheel; 12, U-shaped frame plate; 13, hydraulic cylinder; 14, square frame plate; 15, lifting rod; 16, rotating slot; 17, vertical slot; 18, horizontal slot; 19, vertical block; 20, first rotating shaft; 21, horizontal block; 2 2. Second rotating shaft; 23. Connecting rotating rod; 24. Connecting frame; 25. Limiting sliding rod; 26. Adjusting block; 27. Adjusting plate; 28. First bearing; 29. ​​Adjusting screw rod; 30. Spring; 31. Bracket plate; 32. Adjusting handle; 33. Vertical tooth plate; 34. Fixed plate; 35. Driving rod; 36. Screw thread; 37. Sliding bracket; 38. Second bearing; 39. Connecting rotating shaft; 40. Driven gear; 41. Sliding groove; 42. Driving wheel. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 8The present invention is a miniature explosion-proof remote-controlled diesel crawler tractor for mining, comprising two chassis brackets 1, a connecting rod 2 is fixedly installed between the two chassis brackets 1, an adjustment component is arranged on the chassis bracket 1, an upper front crawler wheel 3, a lower front crawler wheel 4, an upper rear crawler wheel 5 and a lower rear crawler wheel 6 are arranged on the adjustment component, a crawler chain 7 is movably installed on the upper front crawler wheel 3, the lower front crawler wheel 4, the upper rear crawler wheel 5 and the lower rear crawler wheel 6, a placement plate 8 is slidably installed between the two chassis brackets 1, an explosion-proof box 9 is fixedly installed on the placement plate 8, the interior of the explosion-proof box 9 is used to install electrical control equipment, and an installation through groove is opened inside the chassis bracket 1 10. A driving wheel 42 and an adjustment component are arranged inside the installation slot 10. A plurality of load-bearing wheels 11 are arranged on the adjustment component. The load-bearing wheels 11 are in sliding contact with the track chain 7. The driving wheel 42 is used as a power wheel to drive the entire device to move. The power source of the driving wheel 42 can be driven by an existing driving mechanism. In addition, an infrared camera, a millimeter-wave radar, and a laser radar are installed in the electrical control in the explosion-proof box 9. A wireless remote control walking control method is adopted. The operator remotely controls the tractor to work through a remote controller. The remote controller is equipped with a display, which enables the operator to observe the surrounding environment of the tractor from a distance. The millimeter-wave radar and the laser radar can detect the surrounding environment and automatically adjust the body posture. Both ends of the tractor have traction hooks to meet the use requirements of two-way remote control and two-way traction. Since the above principles are well known to people in this field, they will not be described in detail here.

[0019] The adjustment assembly includes a U-shaped frame plate 12 fixedly mounted on the chassis bracket 1, a hydraulic cylinder 13 fixedly mounted on the U-shaped frame plate 12, a square frame plate 14 fixedly mounted on the output rod of the hydraulic cylinder 13, a lifting rod 15 fixedly mounted on the square frame plate 14, and a rotating groove 16 is provided at both ends of the lifting rod 15. A vertical groove 17 in the vertical direction and a horizontal groove 18 in the horizontal direction are provided on the inner side surface of the installation through groove 10. The number of the vertical grooves 17 and the horizontal grooves 18 is two and they are arranged symmetrically. The placement plate 8 is fixedly mounted on the square frame plate 14, and vertical blocks 19 are slidably mounted inside the two vertical grooves 17, and the first rotating shaft 20 is rotatably mounted on the two vertical blocks 19, and horizontal blocks 21 are slidably mounted inside the two horizontal grooves 18, and the first rotating shaft 20 is rotatably mounted on the two horizontal blocks 21. Two rotating shafts 22, a connecting rod 23 is rotatably installed on the second rotating shaft 22, and a symmetrically arranged connecting frame 24 is fixedly installed on the lower end surface of the lifting rod 15, wherein the vertical block 19 slides in the vertical groove 17, and the horizontal block 21 slides in the horizontal groove 18 to ensure that the vertical block 19 and the horizontal block 21 will not fall off, and the placement plate 8 is arranged between the two chassis brackets 1, and a limited slider is arranged on the placement plate 8, and a limited slide groove is arranged on the inner side of the chassis bracket 1. The limited slider and the limited slide groove slide in a limited manner to ensure that when the placement plate 8 is displaced in the vertical direction, the explosion-proof box 9 on the placement plate 8 is in a stable state, and the inner side surface of the square frame plate 14 is slidably connected with the outer side surface of the chassis bracket 1 to ensure that the square frame plate 14 will not be offset during lifting; The upper front track wheel 3 and the upper rear track wheel 5 are respectively fixedly mounted on the two first rotating shafts 20, and the positions of the upper front track wheel 3 and the upper rear track wheel 5 are respectively located inside the two rotating grooves 16, and the lower front track wheel 4 and the lower rear track wheel 6 are respectively fixedly mounted on the second rotating shaft 22, and the lower front track wheel 4 and the lower rear track wheel 6 are respectively located inside the connecting rotating rod 23, and the end of the connecting rotating rod 23 away from the second rotating shaft 22 is rotatably connected to the connecting frame 24.

[0020] In this embodiment, the lifting rod 15 is driven to descend by the hydraulic cylinder 13, and the upper front track wheel 3 and the upper rear track wheel 5 on the lifting rod 15 will be limited by the vertical block 19 and the vertical groove 17 and synchronously descend vertically. Then, by the cooperation between the connecting frame 24 and the connecting rotating rod 23, the lower front track wheel 4 and the lower rear track wheel 6 on the connecting rotating rod 23 will be moved horizontally to both sides through the cooperation between the horizontal block 21 and the horizontal groove 18. When the positions of the upper front track wheel 3, the lower front track wheel 4, the upper rear track wheel 5 and the lower rear track wheel 6 change, the entire height of the crawler traction machine can be adjusted, and the contact area between the crawler chain 7 and the ground can be increased, thereby improving the stability and traction of the crawler vehicle on soft or uneven ground.

[0021] The interior of the two horizontal grooves 18 is fixedly installed with limiting slide bars 25, and the two limiting slide bars 25 are slidably installed with adjustment blocks 26, an adjustment plate 27 is fixedly installed between the two adjustment blocks 26, a first bearing 28 is fixedly installed on the adjustment plate 27, an adjusting screw rod 29 is fixedly installed on the first bearing 28, and a spring 30 is fixedly installed on the adjustment block 26. A bracket plate 31 is fixedly installed inside the installation through groove 10, and the horizontal block 21 is slidably installed on the limiting slide bars 25. One end of the spring 30 away from the adjustment block 26 is fixedly connected to the horizontal block 21, and one end of the adjusting screw rod 29 away from the first bearing 28 passes through the bracket plate 31, and an adjustment handle 32 is fixedly installed, wherein an anti-reversal mechanism can be provided on the bracket plate 31 to ensure that the adjusting screw rod 29 will not reverse, and the adjusting screw rod 29 can be replaced with an electric push rod or a cylinder according to personnel needs to ensure that the adjusting block 26 can slide in the upper limit position of the limiting slide bar 25.

[0022] In this embodiment, when the horizontal block 21 moves in the horizontal groove 18 by limiting the slide bar 25, the reaction force of the spring 30 is used to ensure the stability of the horizontal block 21 in the horizontal groove 18, thereby ensuring the stability of the lower front track wheel 4 and the lower rear track wheel 6. At the same time, the elastic force of the spring 30 can automatically adjust the slackness of the track chain 7 to ensure that the entire crawler traction machine maintains an optimal ground contact area and traction. When the elasticity of the spring 30 cannot achieve a stabilizing effect, the adjusting handle 32 is used to drive the adjusting screw 29 to rotate. The adjusting screw 29 will make the adjusting block 26 slide in the horizontal groove 18 through the cooperation of the adjusting plate 27 and the first bearing 28. By adjusting the position of the adjusting block 26, the elastic force of the spring 30 can be effectively adjusted to ensure that the crawler traction machine always maintains an optimal operating state.

[0023] The adjustment assembly includes a vertical tooth plate 33 fixedly mounted on the lifting rod 15, a symmetrically arranged fixing plate 34 is fixedly mounted on the inner side of the mounting slot 10, a driving rod 35 is rotatably mounted between the two fixing plates 34, two sets of screw threads 36 are opened on the driving rod 35, a sliding bracket 37 is fixedly mounted on the two sets of screw threads 36, a second bearing 38 is fixedly mounted on the sliding bracket 37, a connecting shaft 39 is fixedly mounted on the second bearing 38, and a fixing shaft 39 is fixed on the driving rod 35 and on one side of the screw threads 36. A driven gear 40 is installed, and a sliding groove 41 is opened on the inner side of the installation groove 10. The vertical tooth plate 33 is located on the outer side of the driven gear 40 and meshes with the driven gear 40. The load-bearing wheel 11 is fixedly installed on the connecting shaft 39 and is located on the inner side of the sliding bracket 37. The end of the connecting shaft 39 extends to the inside of the sliding groove 41 and is in sliding contact with the sliding groove 41. Since there is sliding contact between the load-bearing wheel 11 and the crawler chain 7, when the position of the load-bearing wheel 11 is adjusted, it will not affect the transmission of the entire crawler chain 7.

[0024] In this embodiment, when the lifting rod 15 descends, the vertical tooth plate 33 will be driven to descend. Through the cooperation between the vertical tooth plate 33 and the driven gear 40, the driven gear 40 will drive the driving rod 35 to rotate, and the driving rod 35 will pass through the limit of the screw thread 36 and the sliding groove 41, thereby driving the load-bearing wheel 11 on the sliding bracket 37 to move outward. By adjusting the distance between each load-bearing wheel 11, it can be ensured that when the crawler tractor is traveling on uneven ground, the appropriate spacing between each load-bearing wheel 11 is maintained, avoiding stones or obstacles from causing excessive pressure on the crawler chain 7, thereby improving the balance and stability of the crawler tractor.

[0025] Working principle: When in use, the external remote control device is connected to the electrical control device in the explosion-proof box 9, and the entire crawler tractor is controlled to move through the external remote control device; When passing through soft or uneven ground, the lifting rod 15 is driven to descend by the hydraulic cylinder 13, and the upper front crawler wheel 3 and the upper rear crawler wheel 5 on the lifting rod 15 will be limited by the vertical block 19 and the vertical groove 17, and will be synchronously vertically descended. Then, by the cooperation of the connecting frame 24 and the connecting rotating rod 23, the lower front crawler wheel 4 and the lower rear crawler wheel 6 on the connecting rotating rod 23 will be moved horizontally to both sides through the cooperation of the horizontal block 21 and the horizontal groove 18. When the positions of the upper front crawler wheel 3, the lower front crawler wheel 4, the upper rear crawler wheel 5 and the lower rear crawler wheel 6 change, the entire height of the crawler traction machine can be adjusted, and the contact area between the crawler chain 7 and the ground can be increased. When the horizontal block 21 moves in the horizontal groove 18 by limiting the slide bar, the reaction force of the spring 30 is used to ensure the stability of the horizontal block 21 in the horizontal groove 18, thereby ensuring the stability of the lower front track wheel 4 and the lower rear track wheel 6, and at the same time, the elastic force of the spring 30 can automatically adjust the slack of the track chain 7; When the elasticity of the spring 30 cannot provide a stabilizing effect, the adjusting handle 32 is used to drive the adjusting screw 29 to rotate, and the adjusting screw 29 will make the adjusting block 26 slide in the horizontal groove 18 through the cooperation between the adjusting plate 27 and the first bearing 28. By adjusting the position of the adjusting block 26, the elastic force of the spring 30 can be effectively adjusted. When the lifting rod 15 descends, the vertical tooth plate 33 will be driven to descend. Through the cooperation between the vertical tooth plate 33 and the driven gear 40, the driven gear 40 will drive the driving rod 35 to rotate. The driving rod 35 will pass through the limit of the screw thread 36 and the sliding groove 41, thereby driving the load-bearing wheel 11 on the sliding bracket 37 to move outward. By adjusting the distance between each load-bearing wheel 11, it can be ensured that when the crawler tractor is traveling on uneven ground, the appropriate spacing between each load-bearing wheel 11 is maintained to prevent stones or obstacles from causing excessive pressure on the crawler chain 7, thereby improving the balance and stability of the crawler tractor.

[0026] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A miniature explosion-proof remote-controlled diesel crawler tractor for mining, comprising two chassis brackets (1), characterized in that: A connecting rod (2) is fixedly installed between the two chassis brackets (1); an adjustment component is provided on the chassis bracket (1); an upper front track wheel (3), a lower front track wheel (4), an upper rear track wheel (5) and a lower rear track wheel (6) are provided on the adjustment component; and a track chain (7) is movably installed on the upper front track wheel (3), the lower front track wheel (4), the upper rear track wheel (5) and the lower rear track wheel (6); A placement plate (8) is slidably mounted between the two chassis brackets (1), an explosion-proof box (9) is fixedly mounted on the placement plate (8), and the interior of the explosion-proof box (9) is used to install electrical control equipment; The chassis bracket (1) is provided with a mounting slot (10) inside, a driving wheel (42) and an adjustment assembly are arranged inside the mounting slot (10), a plurality of load-bearing wheels (11) are arranged on the adjustment assembly, and the load-bearing wheels (11) are in sliding contact with the crawler chain (7).

2. The miniature explosion-proof remote-controlled diesel crawler tractor for mining according to claim 1 is characterized in that: The adjustment assembly comprises a U-shaped frame plate (12) fixedly mounted on a chassis bracket (1), a hydraulic cylinder (13) fixedly mounted on the U-shaped frame plate (12), a square frame plate (14) fixedly mounted on an output rod of the hydraulic cylinder (13), a lifting rod (15) fixedly mounted on the square frame plate (14), both ends of the lifting rod (15) being provided with a rotation groove (16), an inner side surface of the installation through groove (10) being provided with a vertical groove (17) in the vertical direction and a horizontal groove (18) in the horizontal direction, the number of the vertical grooves (17) and the horizontal grooves (18) being two and being symmetrically arranged, and the placement plate (8) being fixedly mounted on the square frame plate (14).

3. The miniature explosion-proof remote-controlled diesel crawler tractor for mining according to claim 2 is characterized in that: A vertical block (19) is slidably mounted inside the two vertical slots (17), a first rotating shaft (20) is rotatably mounted on the two vertical blocks (19), a horizontal block (21) is slidably mounted inside the two horizontal slots (18), a second rotating shaft (22) is rotatably mounted on the two horizontal blocks (21), a connecting rotating rod (23) is rotatably mounted on the second rotating shaft (22), and a symmetrically arranged connecting frame (24) is fixedly mounted on the lower end surface of the lifting rod (15).

4. The miniature explosion-proof remote-controlled diesel crawler tractor for mining according to claim 3 is characterized in that: The upper front track wheel (3) and the upper rear track wheel (5) are respectively fixedly mounted on the two first rotating shafts (20), and the positions of the upper front track wheel (3) and the upper rear track wheel (5) are respectively located inside the two rotating grooves (16); the lower front track wheel (4) and the lower rear track wheel (6) are respectively fixedly mounted on the second rotating shaft (22), and the lower front track wheel (4) and the lower rear track wheel (6) are respectively located inside the connecting rotating rod (23); and the end of the connecting rotating rod (23) away from the second rotating shaft (22) is rotatably connected to the connecting frame (24).

5. The miniature explosion-proof remote-controlled diesel crawler tractor for mining according to claim 3 is characterized in that: A limiting slide bar (25) is fixedly installed inside the two horizontal grooves (18), an adjustment block (26) is slidably installed on the two limiting slide bars (25), an adjustment plate (27) is fixedly installed between the two adjustment blocks (26), a first bearing (28) is fixedly installed on the adjustment plate (27), an adjustment screw rod (29) is fixedly installed on the first bearing (28), a spring (30) is fixedly installed on the adjustment block (26), and a bracket plate (31) is fixedly installed inside the installation slot (10).

6. The miniature explosion-proof remote-controlled diesel crawler tractor for mining according to claim 5 is characterized in that: The horizontal block (21) is slidably mounted on the limiting slide rod (25); one end of the spring (30) away from the adjustment block (26) is fixedly connected to the horizontal block (21); one end of the adjustment screw rod (29) away from the first bearing (28) passes through the bracket plate (31) and is fixedly mounted with an adjustment handle (32).

7. The miniature explosion-proof remote-controlled diesel crawler tractor for mining according to claim 2 is characterized in that: The adjustment assembly comprises a vertical tooth plate (33) fixedly mounted on the lifting rod (15); a symmetrically arranged fixing plate (34) is fixedly mounted on the inner side surface of the mounting slot (10); a driving rod (35) is rotatably mounted between the two fixing plates (34); two groups of screw threads (36) are formed on the driving rod (35); and sliding brackets (37) are fixedly mounted on the two groups of screw threads (36).

8. The miniature explosion-proof remote-controlled diesel crawler tractor for mining according to claim 7 is characterized in that: A second bearing (38) is fixedly mounted on the sliding bracket (37), a connecting shaft (39) is fixedly mounted on the second bearing (38), a driven gear (40) is fixedly mounted on the driving rod (35) on one side of the screw thread (36), and a sliding groove (41) is formed on the inner side of the mounting through groove (10).

9. The miniature explosion-proof remote-controlled diesel crawler tractor for mining according to claim 8 is characterized in that: The vertical tooth plate (33) is located outside the driven gear (40) and meshes with the driven gear (40). The load-bearing wheel (11) is fixedly mounted on the connecting shaft (39) and is located inside the sliding bracket (37). The end of the connecting shaft (39) extends into the interior of the sliding groove (41) and is in sliding contact with the sliding groove (41).

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