A concrete mixing tank for underground mines

Abstract

The utility model relates to a kind of underground mine concrete mixing tank, including bearing frame, tank body, speed reducer, end cover assembly, inverted U-shaped support beam and support frame, the tank body is obliquely arranged on bearing frame, tail of tank body is higher than head, the speed reducer is fixed at the front end of bearing frame, the output shaft of speed reducer is connected with tank body head, the end cover assembly is connected with tank body tail by dynamic sealing component, the end cover assembly is fixed on inverted U-shaped support beam, inverted U-shaped support beam left and right two ends symmetrical connection support frame, the support frame is fixed on bearing frame.The utility model completely solves the tail stability problem of rear-in rear-out structure, under the joint action of inverted U-shaped support beam cooperation support frame up and down floating support, shock absorbing wheel load and limiting seat, effectively absorb the impact and vibration brought by uneven underground road, prevent abnormal shaking and displacement of tank body in the process of transportation, ensure sealing performance, greatly improve the life of dynamic sealing.

Description

Technical Field

[0001] This utility model relates to the field of mining machinery technology, specifically to a concrete mixing tank for underground mining. Background Technology

[0002] Currently, most underground mining concrete mixing tanks adopt a side-in, rear-out design, which suffers from uneven feeding, tank vibration due to lateral impact, and insufficient operating space. To overcome these defects, rear-in, rear-out mining concrete mixing tanks have been developed on the market. However, most of these tanks have inherent defects in their tail support systems. Because the tank is installed at an angle (with a higher tail), the tail section simultaneously bears the impact of material, the rotational vibration of the tank, and the force of its own weight. Traditional support and sealing structures are simple, resulting in severe tail shaking during operation, rapid wear of seals, and short lifespan, seriously affecting the stability and reliability of the equipment. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide an underground mining concrete mixing tank that completely solves the problem of tail stability in a rear-inlet and rear-outlet structure. With the combined action of the inverted U-shaped support beam, the upper and lower floating support frame, the shock-absorbing wheel load-bearing, and the limit seat, it effectively absorbs the impact and vibration caused by uneven underground road surfaces, prevents abnormal shaking and displacement of the tank during transportation, ensures sealing performance, and prevents material leakage. It significantly improves the life of dynamic seals, provides a stable tail operating environment, greatly reduces abnormal wear and impact between the wear-resistant guide beam and the wear-resistant sealing ring, multiplies sealing reliability, and significantly extends the maintenance cycle.

[0004] The purpose of this utility model is achieved as follows: An underground mining concrete mixing tank includes a support frame, a tank body, a reducer, an end cover assembly, an inverted U-shaped support beam, and a support frame. The tank body is inclinedly mounted on the support frame, with the tail end of the tank body higher than the head end. The reducer is fixed to the front end of the support frame, and the output shaft of the reducer is connected to the head end of the tank body. The end cover assembly is connected to the tail end of the tank body through a dynamic sealing assembly and is fixed to the inverted U-shaped support beam. The left and right ends of the inverted U-shaped support beam are symmetrically connected to the support frame, and the support frame is fixed to the support frame.

[0005] Preferably, the inverted U-shaped support beam is mounted on the outside of the dynamic sealing assembly.

[0006] Preferably, the inverted U-shaped support beam has horizontal guide rails symmetrically arranged at both ends. The horizontal guide rails are inserted into slots at the top of the corresponding side support frame, and shock-absorbing pads are provided at the upper and lower gaps between the horizontal guide rails and the slots.

[0007] Preferably, an annular guide rail is fixed on the outer wall of the tank near the tail end, and shock-absorbing wheels that can rotate freely are symmetrically arranged on the bearing frame corresponding to the annular guide rail, with the annular guide rail sitting on the shock-absorbing wheels.

[0008] Preferably, limiting seats are symmetrically provided on the left and right sides of the bearing frame, and the limiting seats are integrally welded to the bearing frame.

[0009] Preferably, the end cap assembly includes a cover plate, a feed funnel, a discharge sealing door, and a clamping cylinder. The cover plate is fixed on an inverted U-shaped support beam. The feed funnel is located on the upper part of the cover plate. The discharge sealing door is hinged to the lower part of the cover plate. One end of the clamping cylinder is hinged to a first ear plate located on the discharge sealing door, and the other end is hinged to a second ear plate located on the feed funnel.

[0010] Preferably, the cover plate is further provided with a discharge guide funnel, which is located outside the discharge sealing door.

[0011] Preferably, a receiving hopper is provided directly below the discharge guide funnel to receive the discharged concrete, and the receiving hopper is supported and fixed on the bearing frame.

[0012] Preferably, the dynamic sealing assembly includes a wear-resistant guide beam and a wear-resistant sealing ring. The wear-resistant guide beam and the wear-resistant sealing ring cooperate to form a dynamic seal. The wear-resistant guide beam is installed on the tail flange of the tank body, and the wear-resistant sealing ring is installed on the inner side of the cover plate.

[0013] The beneficial effects of this utility model are: The equipment adopts a "rear-in, rear-out" layout, with the feed hopper and discharge port located on the same vertical plane at the rear of the equipment. The height is moderate, which facilitates underground mechanical or manual feeding. During unloading, the concrete flows out smoothly by its own weight and the propulsion of the spiral blades, resulting in a low residual rate. The rear of the tank features a combination of dynamic sealing components and an inverted U-shaped support beam, forming a double-seal protection. The powerful locking provided by the clamping cylinder ensures the reliability of the outlet seal and prevents leakage. With the combined effect of the inverted U-shaped support beam, the upper and lower floating support of the support frame, the shock-absorbing wheel load-bearing and the limit seat, the impact and vibration caused by the uneven road surface underground are effectively absorbed, preventing abnormal shaking and displacement of the tank during transportation, and greatly improving the stability and safety of the equipment operation. A ring-shaped guide rail is fixed on the outer wall of the tank near the tail end. Corresponding to the position of the ring-shaped guide rail, shock-absorbing wheels that can rotate freely are symmetrically arranged on the support frame. The ring-shaped guide rail sits on the shock-absorbing wheels to support the weight of the tail end of the tank. A stable tail-end operating environment significantly extends the lifespan of the dynamic seal, greatly reduces abnormal wear and impact between the wear-resistant guide beam and the wear-resistant sealing ring, multiplies the sealing reliability, and significantly extends the maintenance cycle. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a concrete mixing tank for underground mining according to the present invention.

[0015] Figure 2 for Figure 1 The right view.

[0016] Figure 3 This is a schematic diagram of the three-dimensional structure supporting the frame.

[0017] Figure 4 This is a three-dimensional structural diagram of the end cap assembly (the hydraulic cylinder is not shown).

[0018] in: 1. Support frame; 2. Tank body; 2.1. Circular guide rail; 3. Reducer; 4. End cover assembly; 4.1. Cover plate; 4.2. Feed funnel; 4.3. Discharge sealing door; 4.4. Discharge guide funnel; 4.5. Pressing cylinder; 4.6. First ear plate; 4.7. Second ear plate; 5. Inverted U-shaped support beam; 5.1. Horizontal guide rail; 6. Support frame; 6.1. Slot; 7. Dynamic sealing assembly; 8. Vibration damping pad; 9. Vibration damping wheel; 10. Limit seat; 11. Receiving hopper. Detailed Implementation

[0019] See Figure 1-4 This utility model relates to an underground mining concrete mixing tank, including a support frame 1, a tank body 2, a reducer 3, an end cover assembly 4, an inverted U-shaped support beam 5, and a support frame 6. The tank body 2 is inclinedly mounted on the support frame 1, and the support frame 1 is fixed to the mine car chassis by U-bolts. The axis of the tank body 2 is inclined at an angle of 8° to the horizontal direction, and the tail of the tank body 2 is higher than the head. The reducer 3 is fixed to the front end of the support frame 1, and the output shaft of the reducer 3 is connected to the head of the tank body 2 to drive the tank body 2 to rotate around its axis. The end cover assembly 4 is connected to the tail of the tank body 2 through a dynamic sealing assembly 7 to achieve dynamic sealing between the rotating tank body 2 and the fixed end cover assembly 4.

[0020] The end cap assembly 4 is fixed on the rigid inverted U-shaped support beam 5, forming a stable whole, which effectively improves the deformation resistance and vibration resistance of the tail structure. The inverted U-shaped support beam 5 covers the outside of the dynamic sealing assembly 7, and plays a protective and support role for the dynamic sealing assembly 7.

[0021] The inverted U-shaped support beam 5 is symmetrically connected to support frames 6 at both ends. The support frames 6 are fixed to the bearing frame 1. Horizontal guide rails 5.1 are symmetrically provided at both ends of the inverted U-shaped support beam 5. The horizontal guide rails 5.1 are inserted into slots 6.1 at the top of the corresponding side support frame 6. Shock-absorbing pads 8 are provided in the vertical gap between the horizontal guide rails 5.1 and slots 6.1. This structure allows the end cap assembly 4 to have a certain floating space in the vertical direction to accommodate minor deformations and vibrations of the tank 2. An annular guide rail 2.1 is fixed on the outer wall of the tank 2 near the tail. Shock-absorbing wheels 9 that can rotate freely are symmetrically provided on the bearing frame 1 on the left and right sides corresponding to the annular guide rail 2.1 sits on the shock-absorbing wheels 9 to support the weight of the tail of the tank 2. Limiting seats 10 are also symmetrically provided on the left and right sides of the bearing frame 1. The limiting seats 10 are integrally welded to the bearing frame 1 and maintain a certain gap with the outer wall of the tank 2 to limit the radial runout of the tank 2. With the combined action of the inverted U-shaped support beam 5, the support frame 6 for vertical floating support, the shock-absorbing wheel 9 for load bearing, and the limit seat 10, the impact and vibration caused by the uneven road surface underground are effectively absorbed, preventing abnormal shaking and displacement of the tank 2 during transportation, and greatly improving the stability and safety of equipment operation.

[0022] The end cap assembly 4 includes a cover plate 4.1, a feed funnel 4.2, a discharge sealing door 4.3, a discharge guide funnel 4.4, and a clamping cylinder 4.5. The cover plate 4.1 is fixed to the inverted U-shaped support beam 5. The feed funnel 4.2 is located on the upper part of the cover plate 4.1. The discharge sealing door 4.3 is hinged to the lower part of the cover plate 4.1 and is used to open and close the discharge port. The discharge guide funnel 4.4 is located outside the discharge sealing door 4.3 and is used to guide the flow of concrete. The discharge guide funnel 4.4 is fixed to the cover plate 4.1 by bolts. One end of the clamping cylinder 4.5 is hinged to the first ear plate 4.6 on the discharge sealing door 4.3, and the other end is hinged to the second ear plate 4.7 on the feed funnel 4.2. By extending and retracting the clamping cylinder 4.5, the discharge sealing door 4.3 is clamped and opened, improving the sealing performance of the discharge port and preventing material leakage during mine car operation. The end cap assembly 4 is an independent module, making it easy to disassemble and assemble. It adopts a "rear-in, rear-out" layout, with the feed hopper 4.2 and the discharge port located on the same vertical plane at the tail of the equipment. The height is moderate, which facilitates underground mechanical or manual feeding. During unloading, the concrete flows out smoothly by its own weight and the propulsion of the spiral blades, resulting in a low residue rate.

[0023] A receiving hopper 11 is provided directly below the discharge guide funnel 4.4 to receive the discharged concrete. The receiving hopper 11 is supported and fixed on the bearing frame 1.

[0024] The dynamic sealing assembly 7 includes a wear-resistant guide beam and a wear-resistant sealing ring. The wear-resistant guide beam is made of wear-resistant steel, and the wear-resistant sealing ring is made of polyurethane. The wear-resistant guide beam and the wear-resistant sealing ring cooperate to form a dynamic seal. The wear-resistant guide beam is installed on the tail flange of the tank body 2 and rotates together with the tank body 2. The wear-resistant sealing ring is installed on the inside of the cover plate 4.1 and remains relatively stationary with the cover plate 4.1.

[0025] In addition to the above embodiments, this utility model also includes other implementation methods. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of this utility model.

Claims

1. A concrete mixing tank for underground mining, characterized in that: The device includes a support frame, a tank, a reducer, an end cap assembly, an inverted U-shaped support beam, and a support frame. The tank is inclined on the support frame, with the tail end higher than the head end. The reducer is fixed to the front end of the support frame, and its output shaft is connected to the head end of the tank. The end cap assembly is connected to the tail end of the tank via a dynamic sealing assembly and is fixed to the inverted U-shaped support beam. The left and right ends of the inverted U-shaped support beam are symmetrically connected to the support frame, and the support frame is fixed to the support frame.

2. The underground mine concrete mixing tank according to claim 1, characterized in that: The inverted U-shaped support beam is installed outside the dynamic sealing assembly.

3. The underground mine concrete mixing tank according to claim 1, characterized in that: The inverted U-shaped support beam has horizontal guide rails symmetrically arranged at both ends. The horizontal guide rails are inserted into slots at the top of the corresponding side support frame. Shock-absorbing pads are provided at the upper and lower gaps between the horizontal guide rails and the slots.

4. A concrete mixing tank for underground mining according to claim 1, characterized in that: A ring-shaped guide rail is fixed on the outer wall of the tank near the tail end. The bearing frame is provided with shock-absorbing wheels that can rotate freely, symmetrically on the left and right sides of the ring-shaped guide rail. The ring-shaped guide rail sits on the shock-absorbing wheels.

5. A concrete mixing tank for underground mining according to claim 1, characterized in that: Limiting seats are symmetrically provided on the left and right sides of the bearing frame, and the limiting seats are integrally welded to the bearing frame.

6. A concrete mixing tank for underground mining according to claim 1, characterized in that: The end cap assembly includes a cover plate, a feed funnel, a discharge sealing door, and a clamping cylinder. The cover plate is fixed on an inverted U-shaped support beam. The feed funnel is located on the upper part of the cover plate. The discharge sealing door is hinged to the lower part of the cover plate. One end of the clamping cylinder is hinged to a first ear plate located on the discharge sealing door, and the other end is hinged to a second ear plate located on the feed funnel.

7. A concrete mixing tank for underground mining according to claim 6, characterized in that: The cover plate is also provided with a discharge guide funnel, which is located outside the discharge sealing door.

8. A concrete mixing tank for underground mining according to claim 7, characterized in that: A receiving hopper is located directly below the discharge guide funnel to receive the discharged concrete. The receiving hopper is supported and fixed on the bearing frame.

9. A concrete mixing tank for underground mining according to claim 6, characterized in that: The dynamic sealing assembly includes a wear-resistant guide beam and a wear-resistant sealing ring. The wear-resistant guide beam and the wear-resistant sealing ring cooperate to form a dynamic seal. The wear-resistant guide beam is installed on the tail flange of the tank body, and the wear-resistant sealing ring is installed on the inside of the cover plate.

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