A mine car balance beam and its application in a mine car lifting frame

Abstract

The application discloses a mine car balance beam and application thereof in a mine car hoisting frame, relates to the technical field of balance frames, and comprises two symmetrically arranged balance beams, a fixed plate fixed at the central position between the two balance beams, a horizontal inclination sensor fixed at the upper end of the fixed plate, two balance trolleys distributed on the left and right sides of the fixed plate arranged on the balance beam, a mine car hoisting assembly connected to the balance trolleys through a steel wire rope, and mine car fixing assemblies arranged at the left and right ends of the mine car hoisting assembly. The balance trolley comprises a moving frame, a speed reducer fixed to the moving frame, and a winding motor connected to the input end of the speed reducer. The horizontal inclination sensor is provided, the horizontal state of the balance beam can be monitored in real time, the symmetrically arranged balance beams, the balance trolleys capable of moving flexibly and the reasonable steel wire rope layout can be combined to timely adjust, effectively prevent the mine car from shaking unbalancedly when being hoisted, greatly improve the stability of the hoisting process, and reduce the safety risk.

Description

Technical Field

[0001] This invention relates to the field of balance frame technology, specifically to a mine car balance beam and its application in a mine car hoisting frame. Background Technology

[0002] In mining operations, mining cars are the core equipment for transporting ore and waste, and their hoisting and transfer processes directly affect mining efficiency and operational safety. As the scale of mining operations expands and the load-bearing capacity of mining cars increases, traditional hoisting devices are gradually becoming inadequate for meeting the demands of efficient and safe operations.

[0003] Chinese patent application number CN202220786968.1 discloses a balance beam lifting device, including a hook and an upper adjustable balance beam positioned below the hook. The upper adjustable balance beam comprises a main beam with an adjustment hole penetrating its center and multiple side beams that slide with the adjustment hole. The main beam has multiple first upper through holes communicating with the adjustment hole on its side wall, and multiple second upper through holes aligned with the first upper through holes on the side wall of each side beam. Upper fixing screws pass through the first and second upper through holes, and upper fixing nuts, which fit against the outer side wall of the main beam, are threaded onto both ends of the upper fixing screws. An upper connecting frame is located at the end of each side beam away from the main beam, and an upper lifting sling is provided between each upper connecting frame and the hook. This balance beam lifting device, by incorporating an adjustable upper balance beam, facilitates the lifting of components of different lengths, demonstrating good practicality.

[0004] Chinese patent application number CN202321889408.X discloses a hoisting frame for installing coal mining equipment, including a frame. The frame has power slots and a locking plate. The power slots are symmetrically located at the front and rear ends of the frame, and mine car wheels are interference-fitted into the power slots via bearings. The locking plate is welded to the bottom right side of the frame and has a guide shaft and a set screw. The guide shaft is nested at the rear end of the locking plate, and a pressing plate is fixed to the inner end of the guide shaft by screws. The set screw is threaded to the front end of the locking plate, and its inner end is interference-fitted to the pressing plate via a bearing. This invention enables the hoisting of coal mining equipment underground, effectively improving the installation efficiency of coal mining equipment.

[0005] The above solution still has the following problems during use:

[0006] 1. Existing devices rely heavily on human experience to judge the balance status and lack a mechanism to monitor the horizontal attitude in real time. They cannot detect and adjust imbalance trends in a timely manner, which makes it easy for mine cars to sway significantly when being lifted. This not only affects the stability of the lifting but also increases the safety risks such as mine cars slipping. The balance adjustment efficiency is low and the accuracy is poor.

[0007] 2. The methods for securing mine cars are relatively simple, mostly using single-point or simple structural fixation, which makes it difficult to secure the mine cars from multiple dimensions. During hoisting, the mine cars are prone to displacement or even deviation due to shaking and vibration, making it impossible to ensure that the mine cars are always in a safe and fixed state, posing a significant safety hazard. Summary of the Invention

[0008] To address the above problems, this invention provides a mine car balance beam and its application in a mine car lifting frame.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a mine car balance beam and its application in a mine car hoisting frame, comprising two symmetrically arranged balance beams, a fixing plate fixed at the center between the two balance beams, a horizontal tilt sensor fixed at the center of the upper end of the fixing plate, two balance trolleys distributed on the left and right sides of the fixing plate on the balance beams, a mine car hoisting assembly connected to the bottom of the balance trolleys by steel wire ropes, and mine car fixing assemblies respectively provided at the left and right ends of the mine car hoisting assembly;

[0010] The balancing trolley includes a movable frame, on which a reducer is fixed. The input end of the reducer is connected to a winch motor, and the output end of the reducer is connected to two winch drums symmetrically arranged front and rear. The mine car fixing assembly includes a drive shaft, with fixing rods for fixing the mine car fixedly connected to the front and rear ends of the drive shaft, and fixing rotating columns for reinforcing the mine car being driven to the front and rear ends of the drive shaft.

[0011] Preferably, the four corners of the mobile frame are respectively provided with drive wheels, the drive wheels are rotatably connected to the mobile frame, the four corners of the mobile frame are fixedly connected with walking motors, the walking motors are correspondingly connected to the drive wheels, the drive wheels travel on the balance beam, and the drive wheels are V-shaped wheels.

[0012] Preferably, the mine car hoisting assembly includes a hoisting frame, which is shaped like a grid. Four double-row V-shaped rollers arranged in a rectangular pattern are fixed at the upper end of the hoisting frame. Guide corners are fixed at the four corners of the mine car hoisting assembly, and the guide corners are folded outwards.

[0013] Preferably, the upper end of the movable frame is fixed with four first guide wheels arranged in a rectangular pattern, and the left and right ends of the movable frame are provided with two second guide wheels symmetrically arranged. The first guide wheels and the second guide wheels correspond one-to-one. The orthographic projection of the first guide wheels and the second guide wheels from top to bottom is located between each pair of adjacent double-row V-shaped rollers. The left and right ends of the movable frame are respectively provided with fixing members. The fixing members are located between each pair of second guide wheels, and the center position of the fixing members is rotatably connected to the movable frame.

[0014] Preferably, two wire ropes are wound on each of the two winches. The two wire ropes on the same winch are a first wire rope and a second wire rope. The first wire rope passes through the double-row V-shaped rollers directly below the winch and then passes around the first guide wheel and the second guide wheel on one side in sequence, connecting with the double-row V-shaped rollers on the same side. After the first wire rope is wound around the double-row V-shaped rollers on the same side, it is fixedly connected to one end of the fixing member on the same side. The second wire rope passes through the double-row V-shaped rollers directly below the winch and then passes around the first guide wheel and the second guide wheel on the other side in sequence, connecting with the double-row V-shaped rollers on the same side. After the first wire rope is wound around the double-row V-shaped rollers on the same side, it is fixedly connected to one end of the fixing member on the same side.

[0015] Preferably, baffles are fixedly connected to both ends of the two balance beams, and multiple connecting frames are provided along the long side of the upper end of the balance beam. The connecting frames are U-shaped with the opening facing downward. The lower end of the connecting frame is fixedly connected to the side of the balance beam. A reinforcing strut is provided at the bend of the connecting frame. Two symmetrical steel ropes are fixed to the upper end of the connecting frame. The other ends of the multiple steel ropes converge at one point and are located at the center point of the multiple connecting frames. The converged steel ropes are connected to external lifting equipment.

[0016] Preferably, the upper end of the mine car hoisting assembly is provided with two sets of symmetrical fixed seats, each set having two fixed seats. The drive shaft is rotatably connected to the fixed seats, and both ends of the drive shaft pass through the fixed seats. Bevel gears are fixed at the front and rear ends of the drive shaft, respectively. The fixed rotating column is rotatably connected to the hoisting frame of the mine car hoisting assembly. The upper end of the fixed rotating column is fixed with a bevel wheel that is connected to the drive shaft. One end of the fixed rod is fixedly connected to the drive shaft and is shaped like a "7". The other end of the fixed rod is shaped like a "T". A connecting rod is provided between the fixed rods fixed on the same drive shaft. Both ends of the connecting rod are fixed at the bends of the fixed rods. A telescopic rod is connected to the connecting rod. The other end of the telescopic rod is hinged to the hoisting frame of the mine car hoisting assembly.

[0017] Preferably, the lower end of the fixed rotating column is triangular prism-shaped, the edges of the fixed rotating column are chamfered, and the external mine car is provided with fixing holes corresponding to the fixed rotating column.

[0018] The application of a mine car balance beam in a mine car hoisting frame, using the aforementioned mine car balance beam.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. Equipped with a horizontal tilt sensor, it can monitor the horizontal status of the balance beam in real time. Combined with the symmetrically arranged balance beam, the flexible balance trolley, and the reasonable steel wire rope layout, it can be adjusted in time to effectively prevent unbalanced swaying during mine car lifting, greatly improving the stability of the lifting process and reducing safety risks. The mine car fixing component uses multiple parts such as fixing rods, fixing columns, connecting rods, and telescopic rods to work together. The triangular prism shape at the lower end of the fixing column precisely matches the fixing hole of the mine car, which firmly fixes the mine car from multiple dimensions and avoids the mine car shifting during lifting, significantly enhancing safety and reliability.

[0021] 2. The connecting frame adopts a U-shaped structure with reinforced support rods, and the hoisting frame is in a grid shape. These designs enhance the structural strength of each part of the device, enabling it to withstand the weight of the mine car and hoisting stress, thus improving durability and service life. The walking motor drives the drive wheel, and the winch motor drives the winch drum to wind up and unwind the wire rope via a reducer. The application of electric components makes operation convenient and efficient, reduces manual labor intensity, and allows for precise control of the mine car hoisting position and status. The guide angle facilitates precise alignment of the mine car, and the double-row V-shaped rollers assist in the stable movement of the mine car. The chamfered edges of the fixing column reduce friction and collision when inserted into the fixing holes of the mine car, improving the compatibility between the device and the mine car and making the hoisting operation smoother. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall balance cart of the present invention;

[0024] Figure 3 This is a schematic diagram of the mine car hoisting assembly of the present invention;

[0025] Figure 4 This is a schematic diagram of the overall structure of the mine car fixing assembly of the present invention;

[0026] Figure 5 This is a schematic diagram of the wire rope winding of the present invention.

[0027] The diagram shows the following components: 1. Balance beam; 2. Balance trolley; 3. Mine car hoisting assembly; 4. Mine car fixing assembly; 11. Baffle; 12. Connecting frame; 13. Steel rope; 14. Fixing plate; 15. Horizontal tilt sensor; 21. Moving frame; 22. Drive wheel; 23. Winch drum; 24. Reducer; 25. Winch motor; 26. First guide wheel; 27. Second guide wheel; 28. Fixing component; 31. Hoisting frame; 32. Double row V-shaped rollers; 33. Guide angle; 34. Fixing seat; 41. Drive shaft; 42. Fixing rod; 43. Fixing swivel column; 44. Connecting rod; 45. Telescopic rod; 221. Travel motor. Detailed Implementation

[0028] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0029] Please see Figure 1 , Figure 2 and Figure 3 A mine car balance beam and its application in a mine car lifting frame are disclosed. The beam includes two symmetrically arranged balance beams 1. A fixing plate 14 is fixed at the center between the two balance beams 1, providing stable support for the central structure of the entire device. A horizontal tilt sensor 15 is fixed at the upper center of the fixing plate 14. The horizontal tilt sensor 15 can monitor the horizontal state of the balance beams 1 in real time, providing data for balance adjustment and facilitating the back-and-forth movement of the balance trolley 2 on the balance beams 1, ensuring that the mine car lifted by the balance trolley 2 is lifted smoothly. Two balance beams 1 are distributed on the fixing plate. 14. The left and right balancing trolleys 2 can move flexibly on the balancing beam 1 and adjust their positions to adapt to different hoisting requirements. At the same time, the left and right movement of the balancing trolleys 2 can be used to adjust the balance of the balancing beam 1 and prevent the balancing beam 1 from tilting, which would cause the mine car to fall. The bottom of the balancing trolleys 2 is connected to the mine car hoisting assembly 3 by steel wire rope. The mine car hoisting assembly 3 is used to support and hoist the mine car. The left and right ends of the mine car hoisting assembly 3 are respectively provided with mine car fixing assemblies 4. The mine car fixing assemblies 4 fix the mine car and prevent it from shaking during the hoisting process.

[0030] Furthermore, the horizontal tilt sensor 15 monitors the balance status in real time. Together with the symmetrically arranged balance beam 1, balance trolley 2, and reasonable wire rope layout, it can effectively prevent unbalanced swaying during mine car lifting, ensure the stability of the lifting process, and reduce safety risks such as mine car falling due to swaying.

[0031] Please see Figure 2 , Figure 3 and Figure 4The balancing trolley 2 includes a movable frame 21, which provides a mounting carrier for various components, facilitating the fixation of other components. A reducer 24 is fixed on the movable frame 21. The input end of the reducer 24 is connected to a winch motor 25, which provides power for the winch action, facilitating the rotation of the winch drum 23 to lift the mine car. The output end of the reducer 24 is connected to two symmetrically arranged winch drums 23, which are used to wind up and unwind the wire rope to raise or lower the mine car. The mine car fixing assembly 4 includes a drive shaft 4. 1. The drive shaft 41 is used to transmit power and ensure that power can be transmitted smoothly. The front and rear ends of the drive shaft 41 are respectively fixedly connected to the fixing rods 42 for fixing the mine car. The fixing rods 42 directly act on the mine car for clamping and fixing. The lower end of the drive shaft 41 is supported on the bottom of the mine car, which facilitates the lifting of the mine car when lifting it. The front and rear ends of the drive shaft 41 are respectively connected to the fixing columns 43 for reinforcing the mine car. The fixing columns 43 further enhance the fixing effect on the mine car and effectively prevent the mine car from falling off during the lifting process.

[0032] Please see Figure 2 , Figure 3 and Figure 4 The four corners of the mobile frame 21 are respectively provided with drive wheels 22, which are rotatably connected to the mobile frame 21. The four corners of the mobile frame 21 are fixedly connected with walking motors 221, which are correspondingly connected to the drive wheels 22. The walking motors 221 provide walking power to the drive wheels 22, so that the balance trolley 2 can walk on the balance beam 1, which facilitates the adjustment of the balance beam 1 and prevents the balance beam 1 from tilting during the lifting process. The drive wheels 22 walk on the balance beam 1. The drive wheels 22 are V-shaped wheels. The V-shaped design can better fit the track of the balance beam 1, improve the stability during walking, and reduce the occurrence of deviation.

[0033] Furthermore, the walking motor 221 drives the drive wheel 22 to move, and the winch motor 25 drives the winch drum 23 to wind up and unwind the wire rope through the reducer 24. The use of these electric components makes the operation of the device more convenient and efficient, reduces the intensity of manual operation, and can also more accurately control the hoisting position and status of the mine car.

[0034] Please see Figure 2 , Figure 3 and Figure 4The mine car hoisting assembly 3 includes a hoisting frame 31, which is shaped like a grid. The grid-shaped structure of the hoisting frame 31 is stable and can evenly distribute the weight of the mine car, reducing the possibility of the steel cable breaking. The upper end of the hoisting frame 31 is fixed with four double-row V-shaped rollers 32 arranged in a rectangular pattern. The double-row V-shaped rollers 32 can assist the mine car in moving stably during hoisting and prevent the mine car from sliding or deviating on the hoisting frame 31. The four corners of the mine car hoisting assembly 3 are respectively fixed with guide angles 33. The guide angles 33 are folded outward and play a guiding role when the mine car enters the hoisting frame 31, which facilitates the precise positioning of the mine car.

[0035] Please see Figure 3 , Figure 4 and Figure 5 The upper end of the movable frame 21 is fixed with four first guide wheels 26 arranged in a rectangular pattern. Two second guide wheels 27 are symmetrically arranged at the left and right ends of the movable frame 21. The first guide wheels 26 and second guide wheels 27 correspond one-to-one. The first guide wheels 26 and second guide wheels 27 guide and support the wire rope, ensuring smooth operation. The top-to-bottom projections of the first guide wheels 26 and second guide wheels 27 are located between each pair of adjacent double-row V-shaped rollers 32. This layout makes the wire rope's path more reasonable and avoids interference with other components. Fixing members 28 are respectively provided at the left and right ends of the movable frame 21. The fixing members 28 are located between each pair of second guide wheels 27. The center of the fixing member 28 is rotatably connected to the movable frame 21, allowing for angle adjustment as needed, providing a flexible connection point for fixing the wire rope. Two winches 23 are respectively wound with... Two wire ropes, namely the first wire rope and the second wire rope, are located on the same winch drum 23. The first wire rope passes through the double-row V-shaped rollers 32 directly below the winch drum 23 and then passes around the first guide wheel 26 and the second guide wheel 27 on one side, connecting with the double-row V-shaped rollers 32 on the same side. After the first wire rope is wrapped around the double-row V-shaped rollers 32 on the same side, it is fixedly connected to one end of the fixing member 28 on the same side. The second wire rope passes through the double-row V-shaped rollers 32 directly below the winch drum 23 and then passes around the first guide wheel 26 and the second guide wheel 27 on the other side, connecting with the double-row V-shaped rollers 32 on the same side. After the first wire rope is wrapped around the double-row V-shaped rollers 32 on the same side, it is fixedly connected to one end of the fixing member 28 on the same side. This wire rope winding and connection method can make the wire rope more evenly stressed, improve the stability of hoisting, and also facilitate the control of the lifting and lowering of the mine car hoisting assembly 3.

[0036] Please see Figure 2 , Figure 3 and Figure 4Two baffles 11 are fixedly connected to both ends of the two balance beams 1 to prevent components such as the balance trolley 2 from slipping off the two ends of the balance beams 1, thus providing a limiting protection function. Multiple connecting frames 12 are provided along the long side of the upper end of the balance beams 1. The connecting frames 12 are U-shaped with the opening facing downwards, which is simple and stable. The lower end of the connecting frame 12 is fixedly connected to the side of the balance beam 1. The bending part of the connecting frame 12 is provided with a reinforcing strut to further enhance the strength of the connecting frame 12 and enable it to withstand greater tension. Two symmetrical steel ropes 13 are fixed to the upper end of the connecting frame 12. The other ends of the multiple steel ropes 13 converge at one point and are located at the center point of the multiple connecting frames 12. This convergence method can evenly distribute the tension of the external lifting equipment to each connecting frame 12. The converged steel ropes 13 are connected to the external lifting equipment to realize the overall hoisting operation.

[0037] Furthermore, the U-shaped structure of the connecting frame 12, the reinforcing struts, and the grid-shaped hoisting frame 31 all enhance the structural strength of each part of the device, enabling it to withstand the weight of the mine car and various stresses during the hoisting process, thereby improving the durability and service life of the device.

[0038] Please see Figure 2 , Figure 3 and Figure 4 The upper end of the mine car hoisting assembly 3 is provided with two sets of symmetrical fixed seats 34, each set having two fixed seats 34, providing support points for the installation and rotation of the drive shaft 41. The drive shaft 41 is rotatably connected to the fixed seats 34, allowing for smooth rotation. Both ends of the drive shaft 41 pass through the fixed seats 34, facilitating connection and transmission with other components. Bevel gears are fixed at the front and rear ends of the drive shaft 41, respectively. The fixed rotating column 43 is rotatably connected to the hoisting frame 31 of the mine car hoisting assembly 3. A bevel wheel, which is connected to the drive shaft 41, is fixed at the upper end of the fixed rotating column 43. Through the meshing of the bevel gear and the bevel wheel, the power of the drive shaft 41 is transmitted to the fixed rotating column 43, enabling the rotation of the fixed rotating column 43 and facilitating its rotation. 3. The fixing rod 42 is locked to the fixing hole on the mine car. One end of the fixing rod 42 is fixedly connected to the drive shaft 41 in a 7-shape, which facilitates connection with the drive shaft 41 and better adapts to the structure of the mine car. The other end of the fixing rod 42 is T-shaped, which increases the contact area with the mine car and improves the fixing effect. A connecting rod 44 is provided between the fixing rods 42 fixed on the same drive shaft 41. The two ends of the connecting rod 44 are respectively fixed at the bend of the fixing rod 42, which serves to connect and stabilize the fixing rod 42. A telescopic rod 45 is connected to the connecting rod 44. The other end of the telescopic rod 45 is hinged to the lifting frame 31 of the mine car lifting assembly 3. It can be extended and retracted as needed to assist the fixing rod 42 in the fixing operation and enhance the flexibility and reliability of the fixing.

[0039] Furthermore, in the mine car fixing assembly 4, the fixing rod 42, fixing pin 43, connecting rod 44, and telescopic rod 45 cooperate with each other. Combined with the matching design of the lower end of the fixing pin 43 with the fixing hole of the mine car, the mine car is fixed from multiple dimensions, ensuring it is firmly secured to the lifting assembly during hoisting, preventing displacement and improving the safety and reliability of the hoisting process. The lower end of the fixing pin 43 is a triangular prism, a shape that better matches the corresponding fixing hole on the external mine car, enhancing the stability of the fixation. The edges of the fixing pin 43 are chamfered, and the external mine car has a fixing hole corresponding to the fixing pin 43. When inserted into the fixing hole, friction and collision are reduced, facilitating smooth insertion and preventing sharp edges from damaging the mine car or operators.

[0040] Furthermore, the guiding function of the guide angle 33, the assistance of the double-row V-shaped rollers 32 in moving the mine car, and the chamfering treatment of the edge of the fixing column 43 all improve the compatibility between the device and the mine car, enabling the mine car to enter the hoisting position more smoothly and be fixed, thereby improving the efficiency of the hoisting operation.

[0041] When using this invention:

[0042] Preparation phase:

[0043] Connect the external lifting equipment to the assembled steel cable 13, and check whether the electrical components such as the horizontal tilt sensor 15, the traveling motor 221, and the winch motor 25 are normal. Ensure that all mechanical components are securely connected and free from looseness or damage. At the same time, confirm that the external mine car is in the position to be lifted and that the fixing holes on the mine car are not blocked or damaged.

[0044] Mine car alignment stage:

[0045] The walking motor 221 is operated to drive the drive wheel 22 to move on the balance beam 1, thereby moving the balance trolley 2 and adjusting the position of the mine car lifting assembly 3 to align it with the mine car to be lifted in the horizontal direction. During this process, the horizontal tilt sensor 15 monitors the horizontal state of the balance beam 1 in real time. If an imbalance occurs, it can be fine-tuned in time by adjusting the position of the balance trolley 2 to ensure the balance foundation for subsequent lifting.

[0046] Mine car stationary phase:

[0047] The winch motor 25 is controlled to operate, and after being reduced in speed and torque by the reducer 24, it drives the winch drum 23 to rotate, releasing the wire rope and causing the mine car hoisting assembly 3 to descend until it is close to the mine car below the hoisting frame 31. Then, the mine car fixing assembly 4 is operated, and the transmission shaft 41, bevel gear and bevel wheel are used to rotate the fixing column 43 and insert it into the fixing hole of the mine car. At the same time, the fixing rod 42, with the assistance of the connecting rod 44 and the telescopic rod 45, contacts and fixes the mine car. The fit between the lower triangular prism of the fixing column 43 and the fixing hole of the mine car, as well as the smooth insertion caused by the chamfered edge, help to improve the efficiency and reliability of fixing, ensuring that the mine car is firmly fixed on the hoisting frame 31.

[0048] Mine car lifting stage:

[0049] The winch motor 25 is restarted, and the reverse winch drum 23 rotates to retract the wire rope. Under the guidance of the first guide wheel 26 and the second guide wheel 27, the wire rope pulls the mine car lifting assembly 3 upward, lifting the mine car. Due to the device's design for balance and stability, the mine car remains stable during lifting without significant swaying. During the lifting process, the horizontal tilt sensor 15 continuously monitors the situation. If an imbalance trend is detected, balance can be maintained by controlling the speed at which the winch drums 23 of the two balancing trolleys 2 retract the wire rope, or by adjusting the position of the balancing trolley 2 on the balance beam 1, thus ensuring lifting safety.

[0050] Mine car transfer and placement stage:

[0051] The entire device is moved by an external lifting device to transport the mine car to the target location. After reaching the target location, the winch motor 25 is operated to release the wire rope, causing the mine car hoisting assembly 3 to slowly descend with the mine car. After descending to the appropriate position, the mine car fixing assembly 4 is operated to rotate the fixing column 43 out of the mine car fixing hole, and the fixing rod 42 loosens its fixation to the mine car. Then, the winch motor 25 and the travel motor 221 work together to separate the mine car hoisting assembly 3 from the mine car, completing the placement of the mine car. Afterward, as needed, the device can be moved to the next mine car to be hoisted, and the above process can be repeated for the next hoisting operation.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mine car bolster characterized by: It includes two symmetrically arranged balance beams (1), a fixing plate (14) is fixed at the center between the two balance beams (1), a horizontal tilt sensor (15) is fixed at the center of the upper end of the fixing plate (14), two balance trolleys (2) are arranged on the balance beams (1) and distributed on the left and right sides of the fixing plate (14), and a mine car hoisting assembly (3) is connected to the bottom of the balance trolleys (2) by steel wire ropes. Mine car fixing assemblies (4) are respectively arranged at the left and right ends of the mine car hoisting assembly (3). The balancing trolley (2) includes a movable frame (21), on which a reducer (24) is fixed. The input end of the reducer (24) is connected to a winch motor (25), and the output end of the reducer (24) is connected to two winch drums (23) that are symmetrically arranged front and rear. The mine car fixing assembly (4) includes a drive shaft (41), and the front and rear ends of the drive shaft (41) are respectively fixedly connected to fixing rods (42) for fixing the mine car. The front and rear ends of the drive shaft (41) are respectively connected to fixing rotating columns (43) for reinforcing the mine car. The mine car hoisting assembly (3) includes a hoisting frame (31), which is shaped like a grid. The upper end of the hoisting frame (31) is fixed with four double-row V-shaped rollers (32) arranged in a rectangular pattern. The four corners of the mine car hoisting assembly (3) are respectively fixed with guide corners (33), which are folded outwards. The upper end of the mobile frame (21) is fixed with four first guide wheels (26) arranged in a rectangular pattern. The left and right ends of the mobile frame (21) are provided with two second guide wheels (27) symmetrically arranged. The first guide wheels (26) and the second guide wheels (27) correspond one-to-one. The orthographic projection of the first guide wheels (26) and the second guide wheels (27) from top to bottom is located between each pair of adjacent double-row V-shaped rollers (32). The left and right ends of the mobile frame (21) are respectively provided with fixing members (28). The fixing members (28) are located between the second guide wheels (27). The center position of the fixing members (28) is rotatably connected to the mobile frame (21). Two wire ropes are wound on the two winches (23) respectively. The two wire ropes on the same winch (23) are the first wire rope and the second wire rope respectively. The upper end of the mine car hoisting assembly (3) is provided with two sets of left and right symmetrical fixed seats (34). Each set is provided with two fixed seats (34). The drive shaft (41) is rotatably connected to the fixed seat (34). The two ends of the drive shaft (41) pass through the fixed seat (34). The front and rear ends of the drive shaft (41) are respectively fixed with bevel gears. The fixed rotating column (43) is rotatably connected to the hoisting frame (31) of the mine car hoisting assembly (3).

2. A mine car bolster according to claim 1 wherein: The four corners of the moving frame (21) are respectively provided with driving wheels (22), the driving wheels (22) are rotatably connected with the moving frame (21), the four corners of the moving frame (21) are fixedly connected with walking motors (221), the walking motors (221) are in one-to-one transmission connection with the driving wheels (22), the driving wheels (22) walk on the balance beam (1), and the driving wheels (22) are V-shaped wheels.

3. A mine car bolster according to claim 1 wherein: The first steel wire rope passes through the double-row V-shaped rollers (32) below the winding drum (23), then successively passes through the first guide wheel (26) and the second guide wheel (27) on one side, and finally is connected with the double-row V-shaped rollers (32) on the same side, the first steel wire rope is fixedly connected with one end of the fixed part (28) on the same side after winding through the double-row V-shaped rollers (32) on the same side, the second steel wire rope passes through the double-row V-shaped rollers (32) below the winding drum (23), then successively passes through the first guide wheel (26) and the second guide wheel (27) on the other side, and finally is connected with the double-row V-shaped rollers (32) on the same side, and the first steel wire rope is fixedly connected with one end of the fixed part (28) on the same side after winding through the double-row V-shaped rollers (32) on the same side.

4. A mine car bolster according to claim 1 wherein: The two ends of the two balance beams (1) are respectively fixedly connected with baffle plates (11), the upper end of the balance beam (1) is provided with a plurality of connecting frames (12) along the long side thereof, the connecting frame (12) is a U-shaped structure with an opening facing downward, the lower end of the connecting frame (12) is fixedly connected with the side edge of the balance beam (1), a reinforcing support rod is arranged at the bending portion of the connecting frame (12), the upper end of the connecting frame (12) is respectively fixed with two front and rear symmetrical steel ropes (13), the other ends of the plurality of steel ropes (13) are gathered at one place and at the center point of the plurality of connecting frames (12), and the gathered steel ropes (13) are connected with external hoisting equipment.

5. A mine car bolster according to claim 1 wherein: The upper end of the fixed rotating column (43) is in transmission connection with the transmission shaft (41), one end of the fixed rod (42) fixedly connected with the transmission shaft (41) is in the shape of "7", the other end of the fixed rod (42) is in the shape of T, the connecting rods (44) are arranged between the fixed rods (42) fixed on the same transmission shaft (41), the two ends of the connecting rod (44) are respectively fixed at the bending portions of the fixed rods (42), the telescopic rods (45) are connected with the connecting rod (44), and the other ends of the telescopic rods (45) are hingedly connected with the hoisting frame (31) of the mine car hoisting assembly (3).

6. A mine car bolster according to claim 1 wherein: The lower end of the fixed rotating column (43) is in the shape of a triangular prism, and the edges of the fixed rotating column (43) are chamfered.

7. Use of a mine car bolster in a mine car hoist frame, characterized in that: The mine car balance beam of claim 1 is used.

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