Tire type explosion-proof loader

Abstract

The invention discloses a tire type explosion-proof loader, which relates to the technical field of loaders, and is characterized by comprising a front frame and a rear frame, and the rear end of the front frame is connected with the front end of the rear frame through a central hinge pin; the load sharing structure is fixedly mounted at the bottom of the front frame; the load sharing structure comprises a rotating seat and a supporting column, the rotating seat is fixedly installed at the bottom of the front frame, the upper portion of the supporting column is rotationally connected to an inner cavity of the rotating seat through a rotating shaft, through the load sharing structure, three-point supporting is formed when the bucket is lowered or the large arm is lifted, the dynamic load of the front wheel is dispersed to three load wheels, and instantaneous impact energy is absorbed; the load peak value is obviously reduced; a transverse sliding structure of the load wheel mounting plate and the load wheel shell is matched, so that the load wheel actively avoids ground obstacles and maintains a full grounding state; and finally, pressure bearing data of each wheel is monitored in real time through an annular pressure sensor, single-wheel abnormity is early warned in time, front wheel overload is prevented from the source, and the risk of tire microcracks caused by dynamic loads is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of loaders, in particular to a tire-type explosion-proof loader. Background Art

[0002] As a high-safety engineering equipment meticulously developed for flammable and explosive hazardous environments, the tire-mounted explosion-proof loader successfully combines the flexibility and maneuverability of a tire loader with multiple advanced explosion-proof technologies. This innovative design enables it to operate freely in specialized locations such as underground coal mines, oil and gas fields, and hazardous chemical warehouses, demonstrating its strong adaptability in the presence of explosive gases or dust. Its core advantage is particularly prominent, combining the flexibility and maneuverability of tire-mounted equipment in narrow lanes with rigorous explosion-proof safety certification. This fully replaces the inefficient manual operation of traditional models and equipment that has undergone simple explosion-proof modifications but still performs poorly, significantly improving operational efficiency and safety.

[0003] However, the tire design of existing explosion-proof tire loaders primarily determines their load-bearing capacity based on static loads. However, in real-world operations, when the bucket is lowered or the boom is raised, the center of gravity shifts, causing the dynamic loads on the front wheels to increase dramatically compared to the static values. This recurring impact load can cause persistent and severe damage to the front wheels, easily causing microcracks. Therefore, we propose a new explosion-proof tire loader. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a tire-type explosion-proof loader, which can effectively solve the problems raised in the background art.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a tire-type explosion-proof loader, comprising:

[0006] a front frame and a rear frame, wherein the rear end of the front frame is connected to the front end of the rear frame via a central hinge pin;

[0007] A load sharing structure, fixedly mounted on the bottom of the front frame;

[0008] The load sharing structure includes:

[0009] The swivel seat is fixedly installed on the bottom of the front frame;

[0010] A support column, the upper portion of which is rotatably connected to the inner cavity of the rotating seat via a rotating shaft;

[0011] A connecting rod connected between the three support columns;

[0012] The positioning rod is fixedly installed on the support column close to the front wheel;

[0013] a positioning sleeve, rotatably connected to the positioning rod;

[0014] The cross plate is fixedly installed on the bottom of the front frame;

[0015] An explosion-proof hydraulic cylinder is symmetrically mounted on the transverse plate, and the end of the piston rod of the explosion-proof hydraulic cylinder is fixedly connected to the positioning sleeve;

[0016] a damper, the top of which is fixedly connected to the bottom of the support column;

[0017] A shock-absorbing spring, sleeved on the outside of the damper;

[0018] The walking assembly is arranged at the bottom of the damper.

[0019] Preferably, there are three rotating seats; two of the rotating seats and the corresponding support columns, positioning rods, and positioning sleeves are located at the bottom of the front frame close to the front wheel; the third rotating seat and the corresponding support column are located on the longitudinal center line of the bottom of the front frame close to the central hinge pin.

[0020] Preferably, the load sharing structure also includes: an explosion-proof hydraulic cylinder reinforcement frame, which is fixedly installed on the explosion-proof hydraulic cylinder and the cross plate; the explosion-proof hydraulic cylinder reinforcement frame also includes: a transverse reinforcement rod, which is fixedly installed between the outer walls of the two explosion-proof hydraulic cylinder barrels; and a vertical reinforcement rod, which is fixedly installed between the transverse reinforcement rod and the cross plate.

[0021] Preferably, the upper end of the shock-absorbing spring is fixedly mounted on the bottom of the support column; the lower end of the shock-absorbing spring is fixedly mounted on the top of the load wheel mounting plate of the walking assembly.

[0022] Preferably, the walking assembly includes: a load wheel mounting plate, fixedly mounted on the bottom of the damper; a load wheel shell, with wheel rod holes on both sides and a slider fixedly mounted on the top; the load wheel mounting plate is provided with a slide groove that cooperates with the slider; a load wheel, rotatably connected to the inner side of the load wheel shell through a threaded wheel rod; and an annular pressure sensor, fixedly mounted in the inner cavity of the wheel rod hole.

[0023] Preferably, the load wheel housing is connected to the slide groove of the load wheel mounting plate via a top slider to achieve transverse sliding connection; the annular pressure sensor is embedded in the inner cavity of the wheel rod hole and is coaxially arranged with the threaded wheel rod.

[0024] Preferably, track limiting structures are provided on the outer sides of the two support columns close to the front wheels;

[0025] The track limiting structure includes: a V-frame, fixedly mounted on the front frame; an arc track, fixedly mounted on the top of the V-frame and presenting a quarter-circular ring structure with a central angle of 90 degrees; a track shaft, fixedly mounted on the support column close to the front wheel, with its end extending into the arc track.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. A load-sharing structure actively absorbs dynamic impact loads and collaboratively buffers unloading forces. When the bucket is lowered or the boom is raised, the explosion-proof hydraulic cylinder drives the support column to touch the ground vertically, forming a three-point support structure. This distributes the dynamic load on the front wheels to the three load-bearing wheels. Simultaneously, the damper and shock-absorbing springs work together to absorb instantaneous impact energy, significantly reducing the peak load transmitted to the front wheels and fundamentally minimizing the risk of tire microcracks.

[0028] 2. By setting up a transverse sliding connection structure between the load wheel mounting plate and the load wheel shell, the load wheel can actively avoid ground protrusions or depressions, maintaining a full ground contact state of the load wheel, avoiding the impact force transmitted back to the front wheel due to partial suspension, improving the distribution stability, and at the same time, combined with the rigid support of the explosion-proof hydraulic cylinder, further improving the operating stability and terrain adaptability of the entire machine.

[0029] 3. By installing an annular pressure sensor to monitor the pressure data of each load-bearing wheel in real time, a closed-loop protection system of "load distribution - buffer protection - terrain adaptation - pressure monitoring" is formed. When the pressure of a single wheel is abnormal, timely warning and maintenance are issued to avoid the failure of the load-bearing capacity and prevent the risk of front wheel overload from the root. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a complete structural diagram of the present invention;

[0031] Figure 2 For the present invention Figure 1 Another perspective structural diagram;

[0032] Figure 3 For the present invention Figure 1 Schematic diagram of the bottom structure;

[0033] Figure 4 It is a structural schematic diagram of the front frame of the present invention;

[0034] Figure 5 It is a structural schematic diagram of the load sharing structure and the track limiting structure of the present invention;

[0035] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure at A above;

[0036] Figure 7 For the present invention Figure 5 Another perspective structural diagram;

[0037] Figure 8 It is a structural schematic diagram of the annular pressure sensor, wheel rod hole and threaded wheel rod of the present invention.

[0038] In the picture:

[0039] 1. Front frame; 2. Rear frame; 3. Load sharing structure; 301. Rotating seat; 302. Support column; 303. Connecting rod; 304. Positioning rod; 305. Positioning sleeve; 306. Cross plate; 307. Explosion-proof hydraulic cylinder; 308. Damper; 309. Shock-absorbing spring; 310. Travel assembly; 3101. Load wheel mounting plate; 3102. Load wheel housing; 31021. Wheel rod hole; 3103. Load wheel; 3104. Threaded wheel rod; 3015. Annular pressure sensor; 4. Track limiting structure; 401. V-frame; 402. Arc track; 403. Track shaft. DETAILED DESCRIPTION

[0040] In the present invention, unless otherwise specified, directions such as "up" and "down" are generally used with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" are generally used with respect to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0041] The present invention provides a technical solution:

[0042] See also Figures 1 to 8 , wheel-type explosion-proof loader, including:

[0043] A front frame 1 and a rear frame 2, wherein the rear end of the front frame 1 is connected to the front end of the rear frame 2 via a central hinge pin;

[0044] The load sharing structure 3 is fixedly mounted on the bottom of the front frame 1;

[0045] The load sharing structure 3 includes:

[0046] The rotating seat 301 is fixedly mounted on the bottom of the front frame 1;

[0047] The upper portion of the support column 302 is rotatably connected to the inner cavity of the rotating base 301 via a rotating shaft;

[0048] A connecting rod 303 connected between the three support columns 302;

[0049] A positioning rod 304 is fixedly mounted on the support column 302 near the front wheel;

[0050] The positioning sleeve 305 is rotatably connected to the positioning rod 304;

[0051] The transverse plate 306 is fixedly mounted on the bottom of the front frame 1;

[0052] The explosion-proof hydraulic cylinder 307 is symmetrically mounted on the horizontal plate 306, and the piston rod end of the explosion-proof hydraulic cylinder 307 is fixedly connected to the positioning sleeve 305;

[0053] a damper 308 , the top of which is fixedly connected to the bottom of the support column 302 ;

[0054] The shock absorbing spring 309 is sleeved on the outside of the damper 308;

[0055] The travel assembly 310 is disposed at the bottom of the damper 308 .

[0056] When the tire-type explosion-proof loader is operating, the front frame 1 and the rear frame 2 are flexibly steered through the central hinge pin. The explosion-proof hydraulic cylinder 307 pushes the support column 302 to rotate around the rotating seat 301 and touch the ground, forming a three-point support to distribute the front wheel load to the three load-bearing wheels 3103. The damper 308 and shock-absorbing spring 309 further cushion the impact, and the travel component 310 ensures ground stability. This load-sharing structure 3 effectively reduces the damage to the tires caused by dynamic loads, improving the operating reliability and safety of the equipment under complex working conditions.

[0057] In some embodiments, the number of rotating seats 301 is three;

[0058] The two rotating seats 301 and the corresponding support columns 302, positioning rods 304, and positioning sleeves 305 are located at the bottom of the front frame 1 near the front wheel;

[0059] The third rotating seat 301 and the corresponding supporting column 302 are located on the longitudinal center line of the bottom of the front frame 1 and close to the central hinge pin.

[0060] In this embodiment, by arranging three rotating seats 301 and corresponding support columns 302 - two are close to the front wheels to accurately bear the dynamic load, and one is located on the longitudinal center line close to the central hinge pin to enhance the overall stability - the load sharing structure 3 forms a three-point support during operation, and cooperates with the explosion-proof hydraulic cylinder 307 to achieve uniform load distribution, which not only improves the dispersion effect of the dynamic load of the front wheels, but also ensures the operation balance and safety of the equipment in complex terrain.

[0061] In some embodiments, the load sharing structure 3 further comprises:

[0062] The explosion-proof hydraulic cylinder reinforcement frame is fixedly mounted on the explosion-proof hydraulic cylinder 307 and the cross plate 306; the explosion-proof hydraulic cylinder reinforcement frame also includes:

[0063] A transverse reinforcement rod is fixedly installed between the outer side walls of the cylinder barrels of the two explosion-proof hydraulic cylinders 307;

[0064] The vertical reinforcement rod is fixedly installed between the transverse reinforcement rod and the transverse plate 306.

[0065] In this embodiment, the load-sharing structure 3 significantly enhances the impact resistance of the explosion-proof hydraulic cylinder 307 during operation by adding an explosion-proof hydraulic cylinder reinforcement frame - using horizontal reinforcement rods and vertical reinforcement rods to form a rigid support frame, and tightly connecting the two explosion-proof hydraulic cylinders 307 and the cross plate 306, preventing structural displacement or vibration caused by dynamic loads, and ensuring that the support column 302 accurately touches the ground to form a stable three-point support, thereby improving the structural reliability and operational stability of the entire machine under heavy loads or complex working conditions.

[0066] In some embodiments, the upper end of the shock-absorbing spring 309 is fixedly mounted on the bottom of the support column 302 ; the lower end of the shock-absorbing spring 309 is fixedly mounted on the top of the load wheel mounting plate 3101 of the walking assembly 310 .

[0067] In this embodiment, the upper end of the shock-absorbing spring 309 is connected to the bottom of the support column 302, and the lower end is fixed to the top of the load wheel mounting plate 3101. When the equipment operation generates an impact load, the shock-absorbing spring 309 absorbs and disperses the vibration energy through elastic deformation, thereby reducing the instantaneous impact force transmitted to the front wheel. At the same time, it cooperates with the damper 308 to form a composite buffer system, effectively reducing the risk of tire microcracks and extending the service life of the front wheel and the load wheel 3103.

[0068] See also Figure 4 、 Figure 5 and Figure 8 , the walking component 310 includes:

[0069] The load wheel mounting plate 3101 is fixedly mounted on the bottom of the damper 308;

[0070] The load wheel housing 3102 has wheel rod holes 31021 on both sides and a slider fixedly mounted on the top;

[0071] The load wheel mounting plate 3101 is provided with a slide groove that matches the slider;

[0072] The load wheel 3103 is rotatably connected to the inner side of the load wheel housing 3102 via a threaded wheel rod 3104;

[0073] The annular pressure sensor 3015 is fixedly installed in the inner cavity of the wheel rod hole 31021.

[0074] In the walking component 310, the load wheel mounting plate 3101 is connected to the damper 308, and the load wheel shell 3102 slides horizontally with the slide groove of the load wheel mounting plate 3101 through a slider, so that the load wheel 3103 can actively avoid ground obstacles; the load wheel 3103 is fixed by a threaded wheel rod 3104, and the annular pressure sensor 3015 is embedded in the wheel rod hole 31021 to monitor the pressure data in real time. The three work together to ensure that the load sharing is continuous and effective and to warn of abnormalities.

[0075] In some embodiments, the load wheel housing 3102 is connected to the slide groove of the load wheel mounting plate 3101 through a top slider to achieve a transverse sliding connection; the annular pressure sensor 3015 is embedded in the inner cavity of the wheel rod hole 31021 and is coaxially arranged with the threaded wheel rod 3104.

[0076] In this embodiment, the load wheel shell 3102 is connected to the slide groove of the load wheel mounting plate 3101 through a top slider, so that the load wheel 3103 can actively avoid ground protrusions or depressions and maintain a fully grounded state; the annular pressure sensor 3015 is embedded in the inner cavity of the wheel rod hole 31021 and is coaxial with the threaded wheel rod 3104, monitoring the pressure data of the load wheel 3103 in real time to ensure timely warning when the pressure is abnormal, thereby jointly improving the terrain adaptability and operation safety of the equipment.

[0077] See also Figure 3 、 Figure 5 and Figure 7 , a track limiting structure 4 is provided on the outer sides of the two support columns 302 close to the front wheels;

[0078] The track defining structure 4 comprises:

[0079] V-frame 401, fixedly mounted on the front frame 1;

[0080] The arc track 402 is fixedly mounted on the top of the V-frame 401 and is in the shape of a quarter-circle ring with a central angle of 90 degrees;

[0081] The track shaft 403 is fixedly mounted on the support column 302 near the front wheel, and its end extends into the arc track 402 .

[0082] A track limiting structure 4 is provided on the outside of the two support columns 302 near the front wheels. The arc track 402 is fixed by a V-frame 401, and the track shaft 403 is inserted into it to form a 90-degree rotation constraint, ensuring that the explosion-proof hydraulic cylinder 307 drives the support column 302 to touch the ground vertically, accurately controlling the formation trajectory of the three-point support, avoiding tilt and offset, and significantly improving the stability of the load sharing structure and the reliability of dynamic load bearing.

[0083] When used specifically, the working principle of the present invention is as follows:

[0084] When the tire-type explosion-proof loader is in operation, the explosion-proof hydraulic cylinder 307 is first activated. Its piston rod drives the positioning rod 304 through the positioning sleeve 305, pushing the support column 302 to rotate around the rotating seat 301. At this time, the arc track 402 fixed to the V-frame 401 of the front frame 1 uses the track shaft 403 to constrain the trajectory of the support column 302. The quarter-circle structure with a 90-degree central angle precisely defines the rotation path of the support column 302, ensuring that the support column 302 eventually touches the ground vertically. At this time, the hydraulic cylinder 307 stops extending, and the travel assembly 310 contacts the ground to provide support.

[0085] When the bucket is lowered or the boom is raised, causing the center of gravity to shift, the dynamic impact load borne by the front wheels is actively taken over by the load sharing structure 3. The three load wheels 3103 on the load wheel mounting plate 3101 disperse the pressure. At the same time, the damper 308 and the shock-absorbing spring 309 work together to buffer and unload the force, significantly reducing the instantaneous impact on the front wheels. The two work together to reduce the peak impact load and greatly extend the service life of the load wheels.

[0086] In addition, the three load wheels 3103 significantly increase the ground contact area of ​​the equipment, and combined with the rigid support of the explosion-proof hydraulic cylinder 307, they effectively improve the stability of the entire machine and reduce the risk of rollover, making it particularly suitable for complex terrain such as rugged tunnels in coal mines.

[0087] To accommodate uneven surfaces, the sliding structure and chute of the travel assembly 310 allow the load wheel housing 3102 to adjust laterally, allowing the load wheels 3103 to avoid local protrusions or depressions, ensuring continuous and effective load sharing. Regarding operational monitoring, annular pressure sensors 3015 monitor the pressure data of each load wheel 3103 in real time. If the pressure on a wheel is abnormally low, indicating a poor ground connection or excessive wear, or a sudden increase in pressure indicates an overload risk, abnormal pressure data prompts operator intervention and maintenance, preventing a decrease in load sharing capacity due to single wheel failure.

[0088] When not in operation, the explosion-proof hydraulic cylinder 307 retracts, causing the traction support column 302 to rotate in the opposite direction, completely lifting the load wheel 3103 off the ground. This ensures that the tire independently bears the moving load, preventing additional resistance from affecting maneuverability. To replace the load wheel 3103, simply loosen the nut on the threaded wheel rod 3104, pull out the threaded wheel rod 3104, and remove the old wheel from the load wheel housing 3102. The new wheel can then be inserted and re-tightened. This quick-install and disassembly design significantly simplifies underground maintenance and ensures the continued explosion-proof safety of the equipment.

[0089] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications based on the present invention to solve substantially the same technical problems and achieve substantially the same technical effects are all included in the scope of protection of the present invention.

Claims

1. Tire-type explosion-proof loader, characterized by: include: A front frame (1) and a rear frame (2), wherein the rear end of the front frame (1) and the front end of the rear frame (2) are connected via a central hinge pin; A load sharing structure (3) is fixedly mounted on the bottom of the front frame (1); The load sharing structure (3) comprises: A rotating seat (301) is fixedly mounted on the bottom of the front frame (1); A support column (302), the upper portion of which is rotatably connected to the inner cavity of the rotating seat (301) via a rotating shaft; A connecting rod (303) connected between the three support columns (302); A positioning rod (304) is fixedly mounted on the support column (302) near the front wheel; A positioning sleeve (305) is rotatably connected to the positioning rod (304); A transverse plate (306) is fixedly mounted on the bottom of the front frame (1); An explosion-proof hydraulic cylinder (307) is symmetrically mounted on the transverse plate (306), and the piston rod end of the explosion-proof hydraulic cylinder (307) is fixedly connected to the positioning sleeve (305); a damper (308), the top of which is fixedly connected to the bottom of the support column (302); A shock absorbing spring (309) is sleeved on the outside of the damper (308); The walking assembly (310) is arranged at the bottom of the damper (308).

2. The tire-type explosion-proof loader according to claim 1, characterized in that: The number of the rotating seats (301) is three; The two rotating seats (301) and the corresponding support columns (302), positioning rods (304), and positioning sleeves (305) are located at the bottom of the front frame (1) near the front wheel; The third rotating seat (301) and the corresponding supporting column (302) are located on the longitudinal center line of the bottom of the front frame (1) and close to the central hinge pin.

3. The tire-type explosion-proof loader according to claim 1, characterized in that: The load sharing structure (3) further comprises: An explosion-proof hydraulic cylinder reinforcement frame is fixedly mounted on the explosion-proof hydraulic cylinder (307) and the horizontal plate (306); The explosion-proof hydraulic cylinder reinforcement frame also includes: A transverse reinforcement rod fixedly mounted between the outer side walls of the cylinder barrels of the two explosion-proof hydraulic cylinders (307); A vertical reinforcement rod is fixedly installed between the transverse reinforcement rod and the transverse plate (306).

4. The tire-type explosion-proof loader according to claim 1, characterized in that: The upper end of the shock-absorbing spring (309) is fixedly mounted on the bottom of the support column (302); The lower end of the shock-absorbing spring (309) is fixedly mounted on the top of the load wheel mounting plate (3101) of the walking assembly (310).

5. The tire-type explosion-proof loader according to claim 1, characterized in that: The walking assembly (310) includes: A load wheel mounting plate (3101) is fixedly mounted on the bottom of the damper (308); The load wheel housing (3102) has wheel rod holes (31021) on both sides and a slider fixedly mounted on the top; The load wheel mounting plate (3101) is provided with a sliding groove that matches the sliding block; A load wheel (3103) is rotatably connected to the inner side of the load wheel housing (3102) via a threaded wheel rod (3104); An annular pressure sensor (3015) is fixedly mounted in the inner cavity of the wheel rod hole (31021).

6. The tire-type explosion-proof loader according to claim 5, characterized in that: The load wheel housing (3102) is connected to the load wheel mounting plate (3101) by sliding in a transverse direction via a top slider. The annular pressure sensor (3015) is embedded in the inner cavity of the wheel rod hole (31021) and is coaxially arranged with the threaded wheel rod (3104).

7. The tire-type explosion-proof loader according to claim 1, characterized in that: A track limiting structure (4) is provided on the outer sides of the two support columns (302) close to the front wheels; The track defining structure (4) comprises: A V-frame (401) fixedly mounted on the front frame (1); The arc track (402) is fixedly mounted on the top of the V-frame (401) and is in the shape of a quarter-circle ring with a central angle of 90 degrees; The track shaft (403) is fixedly mounted on the support column (302) near the front wheel, and its end extends into the circular arc track (402).

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