Movable supporting trolley structure for tunnel

Abstract

The utility model provides a tunnel movable type supporting trolley structure which comprises a supporting trolley body, a top plate and a plurality of supporting plates, the supporting plates are movably arranged on the top of the top plate at intervals, a plurality of threaded rods are rotationally connected to the supporting plates, and the threaded rods penetrate through and are movably arranged on the top plate. The top plate is provided with at least two groups of driving assemblies for driving the plurality of supporting plates to move relative to the top plate, each driving assembly comprises a plurality of driven gears which sleeve and are in threaded connection with the plurality of threaded rods, the plurality of driven gears are rotatably arranged on the top plate, and the rack is of an arc-shaped structure attached to the inner wall of the top plate and is slidably arranged on the top plate; a plurality of convex teeth meshed with the driven gears are fixedly connected to the rack in the extending direction of the rack, the motor is fixedly installed on the top plate, and a driving shaft of the motor is sleeved with and fixedly connected with a driving gear meshed with the rack. According to the movable supporting trolley structure for the tunnel, the effect of improving the applicability of the device can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of support trolley technology, and more specifically, to a tunnel mobile support trolley structure. Background Technology

[0002] With the vigorous development of transportation infrastructure construction, the number and scale of tunnel projects are constantly increasing. During tunnel construction, ensuring the stability of the surrounding rock after excavation and the safe and efficient progress of subsequent lining construction are crucial. During construction, mobile tunnel support trolleys play a key role. These trolleys can move freely inside the tunnel and can quickly adjust the support position and parameters according to different construction sections and locations of the tunnel, greatly improving construction efficiency. However, when existing support trolleys are used for support after moving inside the tunnel, they are prone to deformation and damage under frequent heavy pressure. This deformation affects the internal support construction operation of the tunnel and reduces the support effect of the support trolley inside the tunnel.

[0003] To address the aforementioned issues, regarding the technical problem that existing support trolleys, when moved and used for support within tunnels, are prone to deformation and damage under frequent heavy pressure, thus affecting the tunnel's internal support construction operations and reducing the effectiveness of the support trolleys within the tunnel, a large amount of research revealed a tunnel mobile support trolley structure with patent publication number CN219034751U, belonging to the field of support trolley technology. This device uses a motor to drive a lead screw to rotate, and as the lead screw rotates, a moving frame moves on the outer surface of the lead screw. The moving frame causes a pressing plate to press against the inner surface of the support arc plate. Therefore, it is convenient to strengthen and compress the support arc plate when supporting the arched surface inside the tunnel, improving the support effect of the main body of the support trolley within the tunnel and facilitating the construction operation of tying reinforcing bars.

[0004] However, the aforementioned tunnel mobile support trolley structure still has some problems. For example, because the size of the supporting arc plate is fixed, the trolley structure can only support tunnel arch surfaces of a small size, thus reducing the overall applicability of the device. To address these problems, this utility model proposes a tunnel mobile support trolley structure. Utility Model Content

[0005] The present invention aims to solve the technical problems mentioned in the background art and provide a tunnel mobile support trolley structure.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tunnel mobile support trolley structure, comprising a support trolley body and a top plate, multiple support plates movably disposed on the top of the top plate at intervals, multiple threaded rods rotatably connected to each of the multiple support plates, the threaded rods penetrating and movably disposed on the top plate, and at least two sets of drive components for driving the multiple support plates to move relative to the top plate, the drive components comprising:

[0007] Multiple driven gears are respectively sleeved and threadedly connected to multiple threaded rods, and the multiple driven gears are rotatably mounted on the top plate;

[0008] The rack is an arc-shaped structure that fits against the inner wall of the top plate and is slidably disposed on the top plate. Multiple convex teeth that mesh with multiple driven gears are fixedly connected to the rack along its extension direction.

[0009] An electric motor is fixedly mounted on the top plate, and a drive gear that meshes with the rack is sleeved and fixedly connected to the drive shaft of the electric motor.

[0010] A further preferred embodiment: a slider is fixedly connected to the rack, and a groove is provided through the top plate for the slider to slide.

[0011] A further preferred embodiment: a limiting plate is fixedly connected to the slider, and a limiting groove is provided in the top plate for the limiting plate to move. The limiting groove is connected to the slide groove, and the length of the limiting groove is less than the length of the slide groove.

[0012] A further preferred embodiment: at least two positioning rods are hinged to the support plate relative to the threaded rod, the positioning rods are movably disposed on the top plate, and the positioning rods are polygonal in structure.

[0013] A further preferred embodiment: a second stop is fixedly connected to the end of the threaded rod opposite to the support plate, and a first stop is fixedly connected to the end of the positioning rod opposite to the support plate.

[0014] A further preferred embodiment: a fixing plate is fixedly connected between the support trolley body and the top plate, and an inclined rod is fixedly connected between the fixing plate and the support trolley body.

[0015] A further preferred embodiment: multiple fixing rods are fixedly connected between the top plate and the fixing plate, the multiple fixing rods form multiple triangular frames, and an mounting plate is fixedly connected between the multiple fixing rods and the top plate, the mounting plate being fitted against the inner wall of the top plate.

[0016] Beneficial effects:

[0017] 1. By setting up a drive assembly, threaded rod, and support plate, the drive assembly drives the support plate to support the tunnel arch surface, realizing the automated, synchronized, and precise position adjustment of multiple support plates. This method can flexibly adapt to different tunnel top shapes and support requirements, improve the adaptability of the support trolley to complex tunnel conditions, and reduce the workload and errors of manual adjustment, which helps to improve the efficiency and quality of tunnel construction.

[0018] 2. By setting a limiting plate, limiting groove, and positioning rod, the limiting plate and limiting groove effectively prevent the rack from disengaging from the drive gear and driven gear due to excessive movement, thus avoiding mechanical failures caused by the disengagement of transmission components; the positioning rod plays a role in assisting support and stabilizing the movement trajectory of the support plate.

[0019] 3. By incorporating diagonal braces, fixed rods, and fixed plates, the diagonal braces enhance the strength and stability of the connection between the top plate and the support trolley body, enabling the entire support trolley to withstand greater loads. Multiple fixed rods connect the top plate and the fixed plate, forming multiple triangular frames, further strengthening the connection stability between the top plate and the fixed plate. The mounting plate is fitted snugly against the inner wall of the top plate, increasing the connection points and contact area, making the force transmission more uniform and stable. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a front view of the present invention.

[0022] Figure 3 This is a structural schematic diagram of the fixing rod and mounting plate of this utility model.

[0023] Figure 4 This is a schematic diagram of the bottom structure of the top plate of this utility model.

[0024] Figure 5 This is a schematic diagram of the structure of the drive component of this utility model.

[0025] Figure 6 This is a schematic diagram of the slide groove of this utility model;

[0026] Figure 7 This utility model Figure 6 A structural diagram from another perspective;

[0027] Figure 8 This utility model Figure 7 Enlarged structural diagram at point A;

[0028] Figure 9 This is a schematic diagram of the positioning rod and threaded rod of this utility model.

[0029] Figure 1-9 In the middle: 1. Support trolley body; 2. Top plate; 3. Support plate; 4. Fixing plate; 5. Diagonal bar; 6. Fixing rod; 7. Mounting plate; 8. Threaded rod; 9. Drive assembly; 91. Motor; 92. Drive gear; 93. Rack; 94. Convex tooth; 95. Driven gear; 10. Positioning rod; 11. First stop; 12. Second stop; 13. Slide groove; 14. Slider; 15. Limiting plate; 16. Limiting groove. Detailed Implementation

[0030] The following will refer to the appendix in the embodiments of this utility model. Figures 1-9 The technical solutions in the embodiments of this utility model will be clearly and completely described.

[0031] Please see Figure 1-9 In this embodiment of the utility model, a tunnel mobile support trolley structure includes a support trolley body 1 and a top plate 2, multiple support plates 3, which are movably disposed on the top of the top plate 2 at intervals. Multiple threaded rods 8 are rotatably connected to each of the multiple support plates 3. The threaded rods 8 pass through and are movably disposed on the top plate 2. The top plate 2 is provided with at least two sets of drive components 9 for driving the multiple support plates 3 to move relative to the top plate 2. The drive components 9 include multiple driven gears 95, which are respectively sleeved and threadedly connected to the multiple threaded rods 8. The multiple driven gears 95 are rotatably disposed on the top plate 2. A rack 93 is an arc-shaped structure that fits against the inner wall of the top plate 2 and is slidably disposed on the top plate 2. Multiple convex teeth 94 that mesh with the multiple driven gears 95 are fixedly connected to the rack 93 along its extension direction. A motor 91 is fixedly installed on the top plate 2. A drive gear 92 that meshes with the rack 93 is sleeved and fixedly connected to the drive shaft of the motor 91.

[0032] Specifically, when it is necessary to adjust the movement of the support plate 3 relative to the top plate 2, the drive gear 92 on its drive shaft is driven to rotate by the motor 91. The drive gear 92 meshes with the rack 93, causing the rack 93 to slide on the top plate 2. Since the protruding teeth 94 on the rack 93 mesh with multiple driven gears 95, and the driven gears 95 are sleeved on the threaded rod 8 and threadedly connected to the threaded rod 8, when the rack 93 moves, it drives the driven gears 95 to rotate, thereby causing the threaded rod 8 to move axially. Because the threaded rod 8 is rotatably connected to the support plate 3 and passes through the top plate 2, multiple... The synchronous movement of the threaded rod 8 can drive multiple support plates 3 to move relative to the top plate 2, thereby adjusting the support structure layout at the top of the top plate 2. The overall operation is simple. Through the combination of the gear rack 93 driven by the motor 91 and the threaded transmission, the automated, synchronous and precise position adjustment of multiple support plates 3 is realized. This method can flexibly adapt to different tunnel top shapes and support requirements, improve the adaptability of the support trolley to complex tunnel conditions, and reduce the workload and errors of manual adjustment, which helps to improve the efficiency and quality of tunnel construction.

[0033] It should be noted that in this embodiment, the driven gear 95 is rotatably connected to the top plate 2 via a bearing. The top plate 2 has an arched structure, and multiple support plates 3 are laid at intervals along the outer wall of the top plate 2. The support plates 3 are arc-shaped plates coaxial with the top plate 2, and the rack 93 is an arc-shaped structure coaxial with the top plate 2. At least two threaded rods 8 are provided on opposite sides of the multiple support plates 3, and the threaded rods 8 of the multiple support plates 3 are arranged in parallel. Two sets of drive components 9 are respectively arranged opposite to each other on both sides of the support plates 3. Meanwhile, the installation of the motor 91 is existing technology. In order to ensure the stability of the drive shaft of the motor 91, a plate 7 can also be installed on the top plate 2 to drive the motor 91. The drive shaft is supported, and the drive shaft of the motor 91 rotates on the plate. Secondly, the synchronous drive method of the motors 91 of the two drive components 9 is the prior art. Alternatively, the drive gears 92 on the drive components 9 can be connected by a rotating shaft. The synchronous rotation of the drive gears 92 on the two drive components 9 can be achieved by one motor 91 driving the rotating shaft. Of course, the spiral direction of the threaded rods 8 and the driven gears 95 on the two drive components 9 needs to be adjusted according to the actual situation. Furthermore, the installation and operation of the top plate 2 supporting the trolley body 1 can be referred to the publication document with patent announcement number CN219034751U.

[0034] In this embodiment of the utility model, such as Figure 6 , Figure 7 and Figure 8As shown, a slider 14 is fixedly connected to the rack 93. A slide groove 13 is provided through the top plate 2 for the slider 14 to slide. A limiting plate 15 is fixedly connected to the slider 14. A limiting groove 16 is provided in the top plate 2 for the limiting plate 15 to move. The limiting groove 16 is connected to the slide groove 13. The length of the limiting groove 16 is less than the length of the slide groove 13. Specifically, when the slider 14 slides in the slide groove 13, the limiting plate 15 fixed to the slider 14 moves in the limiting groove 16 connected to the slide groove 13. Since the length of the limiting groove 16 is less than the length of the slide groove 13, the limiting plate 15 moves in the limiting groove 16 connected to the slide groove 13. When the slider 14 moves to a certain position, the limiting plate 15 will contact the end of the limiting groove 16, thereby limiting the further movement of the slider 14 and thus limiting the travel range of the rack 93. By setting the limiting plate 15 and the limiting groove 16, the rack 93 is effectively prevented from disengaging from the drive gear 92 and the driven gear 95 due to excessive movement, thus avoiding mechanical failures caused by the disengagement of the transmission components. It should be noted that the lengths of the slide groove 13 and the limiting groove 16 can be adjusted according to the actual situation and are not limited here.

[0035] In this embodiment of the utility model, such as Figure 2 , Figure 4 and Figure 9 As shown, at least two positioning rods 10 are hinged to the support plate 3 relative to the threaded rod 8. The positioning rods 10 pass through and are movably mounted on the top plate 2. The positioning rods 10 have a polygonal structure. A second stop 12 is fixedly connected to one end of the threaded rod 8 away from the support plate 3, and a first stop 11 is fixedly connected to one end of the positioning rod 10 away from the support plate 3. Specifically, the positioning rods 10 play the role of auxiliary support and stabilizing the movement trajectory of the support plate 3. Working together with the threaded rod 8, they prevent the support plate 3 from tilting or twisting during movement. The setting of the two stops ensures the reliability of the connection between the transmission component and the support component, and avoids mechanical failures and safety accidents caused by component detachment.

[0036] In this embodiment of the utility model, such as Figure 2 As shown, a fixing plate 4 is fixedly connected between the support trolley body 1 and the top plate 2. An inclined rod 5 is fixedly connected between the fixing plate 4 and the support trolley body 1. Specifically, the setting of the inclined rod 5 enhances the strength and stability of the connection between the top plate 2 and the support trolley body 1, enabling the entire support trolley to withstand a greater load.

[0037] In this embodiment of the utility model, such as Figure 2 , Figure 3 and Figure 4As shown, multiple fixing rods 6 are fixedly connected between the top plate 2 and the fixed plate 4. These fixing rods 6 form multiple triangular frames. An mounting plate 7 is fixedly connected between the fixing rods 6 and the top plate 2. The mounting plate 7 is fitted against the inner wall of the top plate 2. Specifically, the multiple fixing rods 6 connect the top plate 2 and the fixed plate 4, forming multiple triangular frames, which further enhances the connection stability between the top plate 2 and the fixed plate 4. The mounting plate 7 is fitted against the inner wall of the top plate 2, increasing the connection points and contact area, making the force transmission more uniform and stable.

[0038] Working principle: When it is necessary to adjust the movement of the support plate 3 relative to the top plate 2, the drive gear 92 on its drive shaft is driven to rotate by the motor 91. The drive gear 92 meshes with the rack 93, causing the rack 93 to slide on the top plate 2. Since the protruding teeth 94 on the rack 93 mesh with multiple driven gears 95, and the driven gears 95 are sleeved on the threaded rod 8 and threadedly connected to the threaded rod 8, when the rack 93 moves, it drives the driven gears 95 to rotate, thereby causing the threaded rod 8 to move axially. Because the threaded rod 8 is rotatably connected to the support plate 3 and passes through the top plate 2, multiple... The synchronous movement of the threaded rod 8 can drive multiple support plates 3 to move relative to the top plate 2, thereby adjusting the support structure layout at the top of the top plate 2. The overall operation is simple. Through the combination of gear and rack 93 driven by motor 91 and threaded transmission, the automated, synchronous and precise position adjustment of multiple support plates 3 is realized. This method can flexibly adapt to different tunnel top shapes and support requirements, improve the adaptability of the support trolley to complex tunnel conditions, and reduce the workload and errors of manual adjustment, which helps to improve the efficiency and quality of tunnel construction.

Claims

1. A tunnel mobile support trolley structure, comprising a support trolley body (1) and a top plate (2), characterized in that: Multiple support plates (3) are movably disposed on the top of the top plate (2) at intervals. Multiple threaded rods (8) are rotatably connected to each of the support plates (3). The threaded rods (8) pass through and are movably disposed on the top plate (2). The top plate (2) is provided with at least two sets of drive assemblies (9) for driving the multiple support plates (3) to move relative to the top plate (2). The drive assemblies (9) include: Multiple driven gears (95) are respectively sleeved and threadedly connected to multiple threaded rods (8), and the multiple driven gears (95) are rotatably mounted on the top plate (2); The rack (93) is an arc-shaped structure that fits against the inner wall of the top plate (2) and is slidably disposed on the top plate (2). The rack (93) has a plurality of protruding teeth (94) that mesh with a plurality of driven gears (95) along its extension direction. A motor (91) is fixedly mounted on the top plate (2), and a drive gear (92) that meshes with the rack (93) is sleeved and fixedly connected to the drive shaft of the motor (91).

2. The tunnel mobile support trolley structure according to claim 1, characterized in that: A slider (14) is fixedly connected to the rack (93), and a groove (13) is provided through the top plate (2) for the slider (14) to slide.

3. The tunnel mobile support trolley structure according to claim 2, characterized in that: A limiting plate (15) is fixedly connected to the slider (14). A limiting groove (16) is provided in the top plate (2) for the limiting plate (15) to move. The limiting groove (16) is connected to the slide groove (13). The length of the limiting groove (16) is less than the length of the slide groove (13).

4. The tunnel mobile support trolley structure according to claim 1, characterized in that: At least two positioning rods (10) are hinged to the support plate (3) relative to the threaded rod (8). The positioning rods (10) pass through and are movably disposed on the top plate (2). The positioning rods (10) have a polygonal structure.

5. The tunnel mobile support trolley structure according to claim 4, characterized in that: The threaded rod (8) is fixedly connected to a second stop (12) at one end away from the support plate (3), and the positioning rod (10) is fixedly connected to a first stop (11) at one end away from the support plate (3).

6. The tunnel mobile support trolley structure according to claim 1, characterized in that: A fixing plate (4) is fixedly connected between the support trolley body (1) and the top plate (2), and an inclined rod (5) is fixedly connected between the fixing plate (4) and the support trolley body (1).

7. The tunnel mobile support trolley structure according to claim 6, characterized in that: Multiple fixing rods (6) are fixedly connected between the top plate (2) and the fixing plate (4). The multiple fixing rods (6) form multiple triangular frames. An mounting plate (7) is fixedly connected between the multiple fixing rods (6) and the top plate (2). The mounting plate (7) is fitted to the inner wall of the top plate (2).

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