Single-power bidirectional-operation tunnel supporting and maintaining integrated trolley

Abstract

The invention relates to the technical field of tunnel supporting and maintaining, and provides a single-power bidirectional-operation tunnel supporting and maintaining integrated trolley which comprises a limiting pulley, limiting discs are arranged on the two sides of the limiting pulley, the limiting discs are located on the two sides of a support and fixed through bolts, the limiting pulley is arranged in a double-layer mode, and the limiting pulleys are arranged in a double-layer mode. The two layers are rotationally connected; fixing plates are arranged on the two sides of the guide pulley, and the fixing plates are located on the upper side of the table core and fixedly connected with the table core; and positioning discs are arranged on the two sides of the brush roller. The supporting and returning dual modes are achieved through driving of a single motor, energy consumption is reduced by 40%, the forward and reverse rotation traction efficiency deviation is smaller than 5%, the ramp slipping problem is solved, supporting and chain cleaning are synchronously operated, the working hour utilization rate is increased to 92%, the full width of a brush covering chain is dynamically adjusted by 15-45 degrees, and the actually measured slurry removal rate is larger than 95%.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel support and maintenance, and in particular to a single-power, bidirectionally operating integrated trolley for tunnel support and maintenance. Background Art

[0002] In tunnel construction, support trolleys are key equipment for ensuring tunnel wall stability, and the reliability of their drive chains directly determines construction efficiency. Due to the harsh conditions of tunnels, such as high humidity and rock dust (according to the "Tunnel Construction Equipment Operation and Maintenance Guide," dust concentrations often exceed 150mg / m³), traditional chain drive systems face significant maintenance challenges.

[0003] The mainstream trolleys adopt an open chain design. Mud intrusion during construction causes an average of more than 3 jamming failures per month, and each shutdown for chain cleaning takes 2 to 4 hours. The support and chain maintenance equipment are separated, and additional cleaning units are required. Equipment switching compresses the effective operation time to less than 65%. However, dual-motor trolleys are prone to power asynchrony on slope sections, with traction fluctuations of up to ±15%, inducing uneven pressure on the support surface. Therefore, there is an urgent need to develop a single-powered bidirectional trolley with an integrated chain self-cleaning function. Through an integrated transmission-maintenance design, tunnel construction can be achieved with zero downtime maintenance. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a single-power, bidirectional, integrated tunnel support and maintenance trolley, which solves the problem of open chain design. Mud intrusion during construction causes an average of more than 3 jamming failures per month, and each shutdown for chain cleaning takes 2 to 4 hours. The support and chain maintenance equipment are separated, and an additional cleaning unit is required. Equipment switching compresses the effective operating time to less than 65%. However, dual-motor trolleys are prone to power asynchrony on slope sections, with traction force fluctuations of up to ±15%, which induces uneven pressure on the support surface.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a single-power bidirectional tunnel support and maintenance integrated trolley, comprising: A limiting pulley is provided with limiting plates on both sides of the limiting pulley. The limiting plates are located on both sides of the bracket and fixed by bolts. The limiting pulley adopts a double-layer setting, and the two layers are connected for rotation; A guide pulley, with fixing plates provided on both sides of the guide pulley, and the fixing plates are located on the upper side of the platform core for fixed connection; Brush roller, both sides of the brush roller are provided with positioning plates, the outer wall of the positioning plate is connected to the limit plate through a support frame, and the support frame is inclined; The chain is connected in series with the limit pulley and the guide pulley in a mirror-image S-shaped winding manner to realize the movement of the trolley by the movement of the chain, and the two ends of the chain are connected to the two sides of the bracket through hooks.

[0006] Preferably, hydraulic rods are fixedly connected to both sides of the bracket to achieve height adjustment of the bracket.

[0007] Preferably, the core is located inside the trolley, and the core is sleeved on the outer wall of the bracket and moves horizontally along the outer wall of the bracket.

[0008] Preferably, a motor is fixedly connected to the outer wall of the limiting plate on one side, and a driving end of the motor passes through the limiting plate and is connected to the inside of the limiting pulley to drive the limiting pulley to rotate.

[0009] Preferably, reinforcements are provided on both sides of the fixing plate and the outer wall of the core to enhance the installation strength.

[0010] Preferably, the support frame has an inclination angle of 30 to 60 degrees, so that the brush roller presses against the chain.

[0011] Preferably, the axis of the brush roller is inclined at an angle of 15 to 45 degrees to the running direction of the chain, and the bristles cover the entire width of the chain.

[0012] A method for using a single-power, bidirectionally operating tunnel support and maintenance integrated trolley comprises the following steps: Step 1: Use the hydraulic rod to lift the bracket so that the trolley is close to the inner wall of the tunnel; Step 2: Start the motor to drive the limit pulley to rotate forward, and drive the trolley to move along the first direction of the tunnel via the chain; Step 3: The brush roller removes impurities on the chain surface during movement.

[0013] Preferably, in the step 2: When the motor reverses, the trolley is driven to move in the opposite direction through the S-shaped winding chain; The brush roller cleans the chain in both forward and reverse movements.

[0014] Preferably, the step 1 further includes: hooking and connecting the tunnel side wall anchor point to achieve radial positioning of the trolley through chain tensioning force.

[0015] The present invention provides a single-power, bidirectional tunnel support and maintenance integrated trolley. It has the following beneficial effects: 1. The present invention realizes the dual-mode of support / return through the drive of a single motor, reduces energy consumption by 40%, and the deviation of forward and reverse traction efficiency is less than 5%, thus overcoming the problem of slippage on slopes.

[0016] 2. The present invention synchronizes support and chain cleaning operations, increasing the man-hour utilization rate to 92%, and dynamically adjusting the bristles to cover the entire width of the chain at 15 to 45 degrees. The measured mud removal rate is >95%. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention; Figure 2 Schematic diagram of the structure of the brush roller in the present invention; Figure 3 Schematic diagram of the structure of the limiting pulley in the present invention; Figure 4 Schematic diagram of the structure of the guide pulley in the present invention; Figure 5 Schematic diagram of the connection track of the chain in the present invention.

[0018] Among them, 1. Trolley; 2. Bracket; 3. Hydraulic rod; 4. Motor; 5. Limiting pulley; 6. Brush roller; 7. Guide pulley; 8. Support frame; 9. Positioning plate; 10. Limiting plate; 11. Fixed plate; 12. Reinforcement; 13. Platform core; 14. Chain. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0020] Example: As one aspect of the present invention, please refer to the attached Figure 1 The embodiment of the present invention provides a single-power bidirectional tunnel support and maintenance integrated trolley, comprising: Please see the attached Figure 3 Limiting pulley 5, both sides of which are provided with limiting plates 10, which are located on both sides of the bracket 2 and fixed by bolts. The limiting pulley 5 adopts a double-layer setting, and the two layers are rotatably connected. Both sides of the bracket 2 are fixedly connected with hydraulic rods 3 to achieve the height adjustment of the bracket 2 so that the trolley 1 is close to the inner wall of the tunnel; Please see the attached Figure 4 Guide pulley 7, both sides of the guide pulley 7 are provided with fixed plates 11, the fixed plates 11 are located on the upper side of the platform core 13 and are fixedly connected, the platform core 13 is located inside the trolley 1, and the platform core 13 is sleeved on the outer wall of the bracket 2 and moves horizontally along the outer wall of the bracket 2, the chain 14 drives the trolley 1 to move along the first direction of the tunnel, and when the motor 4 reverses, the trolley 1 is driven to move in the opposite direction by the S-shaped winding chain 14; Please see the attached Figure 2Brush roller 6, positioning disks 9 are provided on both sides of the brush roller 6, the axis of the brush roller 6 is inclined at an angle of 15 to 45 degrees to the running direction of the chain 14, the bristles cover the full width of the chain 14, the outer wall of the positioning disk 9 is connected to the limit disk 10 through the support frame 8, and the support frame 8 is inclined at an angle of 30 to 60 degrees, so that the brush roller 6 is pressed against the chain 14, and the brush roller 6 cleans the surface of the chain 14 in both directions during the movement of the chain 14; Please see the attached Figure 5 The chain 14 is connected in series with the limiting pulley 5 and the guide pulley 7 in a mirror-image S-shaped winding manner, so that the trolley 1 can be moved by the movement of the chain 14. The two ends of the chain 14 are connected to the two sides of the bracket 2 through hooks. The outer wall of the limiting disk 10 on one side is fixedly connected to the motor 4, and the driving end of the motor 4 passes through the limiting disk 10 and is connected to the inside of the limiting pulley 5, so as to drive the limiting pulley 5 to rotate. The chain 14 drives the trolley 1 to move along the first direction of the tunnel. When the motor 4 reverses, the trolley 1 is driven to move in the opposite direction by the S-shaped winding chain 14.

[0021] As another aspect of the present invention, a method for using a single-power, bidirectional tunnel support and maintenance integrated trolley comprises the following steps: Step 1: Connect the hook to the anchor point on the tunnel side wall, achieve radial positioning of the trolley 1 through the tension of the chain 14, and lift the bracket 2 through the hydraulic rod 3 to make the trolley 1 close to the inner wall of the tunnel; Step 2: Start the motor 4 to drive the limiting pulley 5 to rotate forward, and drive the trolley 1 to move along the first direction of the tunnel through the chain 14. When the motor 4 rotates in the reverse direction, the trolley 1 is driven to move in the reverse direction through the S-shaped winding chain 14; Step 3: The brush roller 6 cleans the surface of the chain 14 in two directions during the movement.

[0022] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A single-powered, bidirectionally operated tunnel support and maintenance integrated trolley, characterized in that: include: A limiting pulley (5), wherein limiting plates (10) are provided on both sides of the limiting pulley (5), and the limiting plates (10) are located on both sides of the bracket (2) and fixed by bolts. The limiting pulley (5) adopts a double-layer setting, and the two layers are connected in rotation; A guide pulley (7), wherein both sides of the guide pulley (7) are provided with fixed plates (11), and the fixed plates (11) are located on the upper side of the platform core (13) and are fixedly connected; A brush roller (6), wherein positioning plates (9) are provided on both sides of the brush roller (6), the outer wall of the positioning plate (9) is connected to the limit plate (10) via a support frame (8), and the support frame (8) is arranged in an inclined manner; The chain (14) is connected in series with the limiting pulley (5) and the guide pulley (7) in a mirror-image S-shaped winding manner, so that the trolley (1) is driven to move by the movement of the chain (14), and the two ends of the chain (14) are connected to the two sides of the bracket (2) through hooks.

2. The single-powered, bidirectionally operated tunnel support and maintenance integrated trolley according to claim 1, characterized in that: Both sides of the bracket (2) are fixedly connected with hydraulic rods (3) to achieve height adjustment of the bracket (2).

3. The single-powered, bidirectionally operated tunnel support and maintenance integrated trolley according to claim 1, characterized in that: The platform core (13) is located inside the trolley (1), and the platform core (13) is sleeved on the outer wall of the bracket (2) and moves horizontally along the outer wall of the bracket (2).

4. The single-powered, bidirectionally operated tunnel support and maintenance integrated trolley according to claim 1, characterized in that: The outer wall of the limiting disk (10) on one side is fixedly connected to a motor (4), and the driving end of the motor (4) passes through the limiting disk (10) and is connected to the inside of the limiting pulley (5) to drive the limiting pulley (5) to rotate.

5. The single-powered, bidirectionally operated tunnel support and maintenance integrated trolley according to claim 1, characterized in that: Reinforcements (12) are provided on both sides of the fixing plate (11) and the outer wall of the platform core (13) to enhance the installation strength.

6. The single-powered, bidirectionally operated tunnel support and maintenance integrated trolley according to claim 1, characterized in that: The support frame (8) has an inclination angle of 30 to 60 degrees, so that the brush roller (6) presses against the chain (14).

7. The single-powered, bidirectionally operated tunnel support and maintenance integrated trolley according to claim 1, characterized in that: The axis of the brush roller (6) is inclined at an angle of 15 to 45 degrees to the running direction of the chain (14), and the bristles cover the full width of the chain (14).

8. A method for using a single-powered, bidirectionally operated tunnel support and maintenance integrated trolley, using the single-powered, bidirectionally operated tunnel support and maintenance integrated trolley according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Lift the support (2) by means of a hydraulic rod (3) so that the trolley (1) is close to the inner wall of the tunnel; Step 2: starting the motor (4) to drive the limiting pulley (5) to rotate forward, and driving the trolley (1) to move along the first direction of the tunnel via the chain (14); Step 3: The brush roller (6) removes impurities on the surface of the chain (14) during the movement.

9. The method for using the single-powered, bidirectionally operated tunnel support and maintenance integrated trolley according to claim 8, characterized in that: In the step 2: When the motor (4) rotates in reverse, the trolley (1) is driven to move in the reverse direction via the S-shaped winding chain (14); The brush roller (6) performs bidirectional cleaning on the chain (14) in both forward and reverse movements.

10. The method for using the single-powered, bidirectionally operated tunnel support and maintenance integrated trolley according to claim 8, characterized in that: The step 1 also includes: hooking and connecting the anchor point of the tunnel side wall, and achieving radial positioning of the trolley (1) through the tensioning force of the chain (14).

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